bluuebunny/crossref_metadata_2025 huggingface dataset:
Nonlinear Input Power Flow Analysis of a Plate with a Breathing Crack
Authors: Pang Zhong Hao , Zhu Xiang , Li Tian Yun , Zhang Ling
Published: September 2014

Plates are commonly used in engineering structures. However crack is the most common form of damages in the plate structures. The crack in the plate will open and close during vibrational cycle, making the cracked structure with nonlinear dynamic characteristics. Based on vibrational power flow theory, the nonlinear dynamic analysis of a plate structure is carried out. The contact elements are used to simulate the nonlinear behavior of the breathing crack. Aiming to study the input power characteristics and the super harmonic resonance of a breathing cracked plate which is under the resonant excitation. By the finite element calculation, the structural input power curve is analyzed, which provides a theoretical basis for the damage identification of cracked structures.
Techno-Economic Optimization for Buildings’ Exterior Shading Programs
Authors: Jun Lu , Xu Qiang , Zhang Yan
Published: September 2014

For multi-floor public buildings, exterior shading plays a more and more important role in architectural design. In this paper, a program at lowest investment costs on premise of equivalent function value is selected for projects with several alternative shading programs by using value engineering method and by conducting techno-economic comprehensive appraisals on aspects of shading, ventilation, cost, appearance and maintenance and some other factors.
The Study on Safety Management of High-Rise Construction Lift Platform Based on Entropy Method and Grey Theory
Authors: Zhao Jin Xian , Li Fan , Liu Min , Li Long
Published: September 2014

According to the factors involved in safety management process of high-rise construction lift platform, an evaluation index system was established in the paper, which covering five respects such as the management of security preparedness, security use, security monitoring, security organization and security environment. Entropy method was used for weight calculation and grey system theory was used to carry on grey comprehensive evaluation for each evaluation index in this index system, so built safety management model based on entropy method and grey theory. The model could comprehensively reflect the safety management performance of high-rise construction lift platform. Finally, an example of high-rise building construction project was given to evaluate the safety of construction lift platform in the project and put forward the reasonable suggestions according to the evaluation result.
Study on the Fire Protection Technologies for External Thermal Insulation System of the Buildings
Authors: Cui Yan Qiu , Peng Yun Long , Luo Cai Ling
Published: September 2014

EPS, XPS and PU plates etc. are often selected as the insulating layer in external thermal insulation system. Although featured by good thermal insulation properties and low costs, these materials are provided with major fire potential. Therefore, fireproof treatment methods for the thermal insulation materials and fireproof structural measure for the system are proposed in this paper based on the combustion tests on the thermal insulation materials, so as to increase the fire protection safety of the external thermal insulation system.
Comfort Analysis for the Building at a Metro Depot
Authors: Duan Jin , Li Yun Gui
Published: September 2014

A comfort analysis for the building at a metro depot is presented in this paper with FEA method. First, the dynamic analysis for the whole building structure is performed and the acceleration response of each floor is calculated and compared with the civil codes, based on which the structural comfort is estimated. And then, the major factor resulting in the comfort problem of shear-wall buildings is obtained by frequency domain analysis and it is the summation of mode participating coefficients according to the peak-amplitude frequency-range of vibration source. And finally, an advice for the modification of building design is presented to avoid the structural comfort problem.
Status of Site Test Methods of Organosilicon Hydrophobic Impregnants for Protecting Reinforced Concrete
Authors: Yuan Zong Yang , Sun Hong Yao , Yang Zheng , Shen Ming Xia , Shan Guo Liang
Published: September 2014

The organosilicon hydrophobic impregnants is applied on concrete to prevent rebar corrosion with its water repellent property which can prevent the intrusion of chloride and other harmful media. On-site the parameters of organosilicon hydrophobic impregnants of controlling quality consist of resistance to chloride penetration, water absorption of concrete and impregnating depth of organosilicon hydrophobic impregnants. The status of test methods of these parameters is summarized and their advantages and disadvantages are briefly reviewed. Finally some ideas are presented about shortcomings of test methods.
The Impact of the Fly Ash Dosage to the Shrinkage-Compensating Concrete
Authors: An Ya Qiang , Lou Zong Ke , Sun Hong Bao , Qu Jin , Li Dong Yang
Published: September 2014

In order to explore the influence rule of the dosage of fly ash on the strength and restrictive expansion rate of the shrinkage-compensating concrete, the shrinkage compensating concrete which was mixed with different dosages of fly ash was compared with the normal concrete, then the tests show that the optimal dosage of fly ash is 30% which is aimed to maximize the expansion and contraction rate of shrinkage-compensating concrete .Besides , the basic laws between the dosage of fly ash and the strength ,the restrictive expansion rate of shrinkage compensating concrete are summarized, and some theoretical analyses are given in the end.
Global Existence of Solutions for some Nonlinear Wave Equation
Authors: Hu Yue
Published: September 2014

In this paper, we consider the existence of global solution to the initial-boundary value problem for some hyperbolic equation with P-Laplace operator and a nonlinear dissipative term using the compactness criteria and the monotone mapping’s method.
Implement of Ameliorated ACM Element in Numerical Manifold Space for Tackling Kirchhoff Plate Bending Problems
Authors: Guo Hong Wei , Zheng Hong , Li Wei
Published: September 2014

Ab
ridging the chasm between the
prevalent
ly employed
continuum methods (e.g. FEM) and discontinuum methods (e.g. DDA)
,the numerical manifold
(NNM)
,which utilizes two covers, namely the
mathematical cover and physical cover
,
has evinced various advantages
in
solving
solid mechanic
al issues.
The
forth-order
partial
elliptic
differential equation governing
Kirchhoff
plate bending
makes it arduous to establish the
-regular Lagrangian partition of unity
,nevertheless,
this study renders a
modified
conforming
ACM
manifold
element
,
irrespective of
accreting its cover degrees,
to resolve the fourth-order problems.
In tandem with the forming of the
finite element cover system
that
erected on
r
ectangular mesh
es
,
a succession of n
umerical manifold formulas
are
derived
on grounds of
the
minimum potential energy principle
and the
displacement boundary conditions
are
executed
by penalty function methods.
The numerical example elucidates that
, compared with the orthodox ACM
element
,
the
proposed
methods
bespeak the accuracy and precipitating
convergence
of the NMM
.
Nonlinear Dynamic Analysis of Space Frame Structures by Discrete Element Method
Authors: Qi Nian , Ye Ji Hong
Published: September 2014

This document explores the possibility of the discrete element method (DEM) being applied in nonlinear dynamic analysis of space frame structures. The method models the analyzed object to be composed by finite particles and the Newton’s second law is applied to describe each particle’s motion. The parallel-bond model is adopted during the calculation of internal force and moment arising from the deformation. The procedure of analysis is vastly simple, accurate and versatile. Numerical examples are given to demonstrate the accuracy and applicability of this method in handling the large deflection and dynamic behaviour of space frame structures. Besides, the method does not need to form stiffness matrix or iterations, so it is more advantageous than traditional nonlinear finite element method.
Peridynamic Modeling of Concrete Structures
Authors: Huang Dan , Lu Guang Da , Wang Meng Wei
Published: September 2014

An improved nonlocal peridynamic model was proposed to analyze the progressive failure and crack propagation in concrete structures. Integration-typed equations of motion rather than partial differential equations are utilized so that the cracks will propagate naturally as a consequence of simulation. The anisotropy of concrete and the short-range repulsion between material points were incorporated into the pericynamic constitutive model for concrete, and the damage of material was defined locally at the level of pairwise bond. Its validity was established through qualitative and quantitative comparisons against finite element analysis and experimental observations.
Research on Oscillation in ABAQUS Elastic-Plastic Time-History Analysis
Authors: Chen Xiao Ming , Duan Jin , Qi Hu , Li Yun Gui
Published: September 2014

Using ABAQUS to analyze the response of tall building under expected rare earthquake, usually the gravity field can be derived by the implicit method as the initial condition of simulation for seismic wave executed in the explicit method. In practice of engineering, oscillation of gravity often occurred at the beginning of explicit method which would lowered accuracy and reliability of time-history results. Three main reasons including stress level, constitutive model and the software ABAQUS itself are researched in this paper by numerical examples, and an extra analysis step is proposed for eliminating oscillation before loading the seismic wave.
Solving of Partial Differential Equations by Numerical Manifold Method with Partially Overlapping Covers
Authors: Gong Ya Qi , Chen Qin , Qi Yong Feng
Published: September 2014

Governing equations of 1D high-order numerical manifold method with partially overlapping covers have been deduced by the general method of weighted residuals. By using the proposed method, a highly oscillatory differential equation has been solved. In addition, a posteriori error method is adopted for evaluating the accuracy of the algorithm. Meanwhile, several factors affect the accuracy are also discussed. The results indicate that accuracy of solution increase with the decrease of overlapping ratio and the order of cover function. When higher order cover function such as 6th is used, higher accuracy will matched even for second derivative of unknowns. This paper attempts to enrich the theory and practical field of the NMM.
Steel Fatigue Curves and its Impact on Bridge Performance
Authors: Hong Liang , Hai Yu
Published: September 2014

Fatigue of steel and other metal materials focused on fatigue strength and fatigue damage accumulation in two ways. Continuous hot air axially deformed bars fatigue tests showed that fatigue failure often occurs at the maximum defect reinforced, and bending fatigue tests of reinforced concrete structures, fatigue failure often occurs in areas of reinforced concrete curved split effective cross-sectional area decreases place. This paper studies the construction of reinforced fatigue effect on the structural performance and the fatigue reliability theory has some theoretical significance.
Nonlinear Stability Analysis of Elastic Cylinders under Global Bending
Authors: Chen Lei
Published: September 2014

The cylindrical shells under global bending with different geometric parameters display different failure behavior. The size of typical buckles under axial compressive stress regimes is rather small and extends over a very small zone, with the axial compressive stress reaching the critical value. The first estimate of the elastic buckling strength in bending is the condition in which the most compressed fiber reaches the buckling stress for uniform axial compression. For short cylinders, local bifurcation buckling occurs at the middle of the most compressed side of the shell, and geometric nonlinearity has a little effect on the buckling strength, while for medium-length and long cylinders, the geometric nonlinearity and the ovalization of the cross-section should be considered. This paper explores the failure behavior in elastic cylinders in pure bending.
Numerical Study of Wave Diffraction with Four Cylinders
Authors: Geng Bao Lei , Zhang Ci Heng
Published: September 2014

By taking the 3D Laplace equation as the basic governing equation, a mathematical model with respect to the interaction between linear waves and arbitrary 3D structures was founded. With an example of wave action with four cylinders, numerical results show that when incident wave direction is 22.5°, wave force Fx on 1# cylinder and 2# cylinder is the biggest and when incident wave direction is 0°, wave force Fx on 3# cylinder and 4# cylinder is the biggest; wave force Fy and the wave height on origin point increases with incident wave direction increasing for the given layout and incident wave conditions.
A Study on Inlet Turbulence Information for Large Eddy Simulation
Authors: Shen Lian , Dong Guo Chao , Han Yan , Cai Chun Sheng , Li Chun Guang
Published: September 2014

In view of the question that the inlet boundary conditions of turbulence information for the large eddy simulation process is difficult to be settled, the target wind field was divided into blocks along the height direction firstly. Under the assumption of the same height and its nearby area, fluctuating wind field characteristics are the same, the one-to-one relationship between time-history data and the target area was established, using the classical WAWS to simulate the fluctuating time-history data of wind field. Then the time-history data were given to the homologous grid of the target wind field during the process of large eddy simulation, and fluctuating information of the large eddy simulation in the whole entrance was obtained consequently. Finally, a secondary development of the commercial software FLUENT was proceeding, and a simulation of the flow field without any obstacles was established. The fluctuating time-history data were written in by using the method presented in this thesis, and the entrance boundary conditions were generated. By analyzing the wind field’s power spectrum and correlation at different positions, we find that the wind field generated by the method presented in the paper can satisfy the basic characteristic of the fluctuating wind field, and it also provides references for the refine research of the large eddy simulation boundary conditions.
Study Based on FLUENT of Broken Internal Waves in Different Slope Angles
Authors: Yan Zi Tong , Cheng Liang Qiu , Yi Feng , Chen Tai Zhong , Sun Han , Wang Chun Ling
Published: September 2014

Internal waves will break in the process of communication, the broken will make water in upper and lower mixing, which has significant influence on the hydrodynamic and layered characteristics of density stratification of the water. In order to reveal the propagation of internal solitary waves, a 3d numerical wave flume was built. The research of the propagation of internal solitary waves in the regular topography and broken on slopes was based on FLUENT. Comparing the fragmentation degree of different slope angle and researching the energy dissipation of the wave propagation process , which are supposed to successfully match the results with the experiment results, can provide new methods and means for the further study of internal wave breaking characteristics and the improvement of ecological environment of water bodies.
Comparative Analysis Pushover and Elastic-Plastic Time-History Method of Frame Structure with Viscous Dampers
Authors: Wang Jie , Bai Yu
Published: September 2014

Chinese seismic code provision, for the energy dissipation structure, when the main structure into elastic-plastic stage, the system should be based on characteristics of the main structure, the use of static elastoplastic analysis and nonlinear time history analysis methods. In this paper, the static elastoplastic and elastic-plastic time history method of analysis and comparison to speed, such as type viscous damper type damper is not applicable to the static elastoplastic analysis.
Non-Classical Probability Seismic Reliability Based on Pushover Analysis
Authors: Li Hao
Published: September 2014

In this paper, the probabilistic model is used to quantify the uncertainty of structural resistance, and the convex model is used to quantify the seismic uncertainty. The distribution parameters for the probabilistic model, together with the interval range for the convex model, are obtained through pushover analysis. Two-level function equation method is employed to calculate the seismic reliability of the structure. Case study shows that compared with the classical probability method, the proposed method is more simple and reasonable for seismic reliability analysis.
Seismic Analysis of Joints of New Precast Concrete Shear Wall Beam Structures
Authors: Meng Xian Hong , Liu Yang
Published: September 2014

In this paper, an analysis of seismic performance was done about cast-in-situ and prefabricated wall - beam plane connecting joints by a nonlinear finite element analysis software. In ensuring parameters and loading unchanged, the stress nephogram was acquired on cast-in-situ and prefabricated wall - beam plane connecting nodes in the same low-cyclic reversed load test and two components hysteresis curves and skeleton curves were extracted. Through comparison and analysis. In the research scope, comparing with cast-in-situ joints, prefabricated wall - beam joints had high bearing capacity and good ductility. This template explains and demonstrates how to prepare your camera-ready paper for Trans Tech Publications. The best is to read these instructions and follow the outline of this text.
Seismic Damage Predictions and Antiseismic Performance Researches of Single-Story Brick Column Workshops in Lushan Ms7.0 Earthquake
Authors: Wang Ming Zhen , Sun Bai Tao , Yan Pei Lei
Published: September 2014

Single-story brick column workshops are widely used as the production or storage room of medium and small-sized enterprises in China. Based on the field investigation of single-story brick column workshops at the earthquake-affected area after Lushan 7.0 earthquake, the damage characteristics of workshops are summed up. Damage prediction analyses are carried out for two typical single-story brick column workshops, and failure mechanism researches are conducted by using ABAQUS finite element software for a workshop. Finally, according to the results of failure mechanism researches, some relevant suggestions of the seismic reinforcement are put forward.
Seismic Fragility Analysis of Hill Buildings with Uneven Ground Column Heights
Authors: Huang Lin Qing , Wang Li Ping , Ning Chao Lie
Published: September 2014

The hill buildings sited on slopes have been widely constructed in mountainous regions. In order to estimate the seismic vulnerability of the hill buildings with uneven ground column heights under the effect of potential earthquakes, the exceedance probabilities of the hill buildings sited on different angle slopes in peak ground acceleration (PGA) are calculated and compared by using the incremental dynamic analysis method. The fragility curves show the slope angle has considerable influence on the seismic performance. Specifically, the exceedance probability increases with the increasing of the slope angle at the same performance level.
Study on a New Seismic Isolation System Based on Dynamic Test
Authors: Yang Wen Xia , Song Tian Qi , Shi Rong Jin
Published: September 2014

A new seismic isolation system entirely different from wildly used Laminated Rubber seismic isolator model was suggested. Vibration table test on the Plexiglas model of the suggested seismic-isolation (S-I) system was carried out. The results show that the seismic force transferred to the superstructure is only about one-tenth of the ground vibrating.
Assembled Wallboards Standardization Study in Steel Frame Structure
Authors: Wang Ya Bo , Xi Chuan Hao , Liu Han Ting , Qian Lei , Dou Gao Feng
Published: September 2014

The author describes the current development and problems of steel frame structure assembled wallboards. Assembled structure wallboards layout schemes, advantages ,disadvantages and types have discussed in this paper. Then the author gives how to realize assembled wallboards standardized program and promote assembled wallboards widely used in steel frame structure.
Seismic Fragility Assessment of RC Bridges under Marine Environments
Authors: Cui Jin Tao , Cui Peng
Published: September 2014

The chloride-induced corrosion of steel bars is focused in this study which is one of the major causes of deterioration of RC bridges under marine environments. The steel corrosion usually causes cracking and spalling of the concrete cover due to the expansion of corrosion products. Structural distress due to loss of bond or reduction of the cross-sectional area can be caused with time. A girder bridge exposed to the marine environment is studied to present the fragility curves variance in time in this study. The damage states of the bridge are determined to five stages by using the maximum displacement ductility. The proposed method will be useful to evaluate the seismic performance of new or existing bridges considering steel rebar corrosion.
Seismic Stability Analysis of Light-Weight Column Considering Depth of Liquefiable Layer
Authors: Xu Bin Bin , Nakai Kentaro , Noda Toshihiro
Published: September 2014

A series of light-weight column for receiving the wireless signals to control the stoppage of gas supply are built on the liquefiable ground and their seismic stability should be precisely investigated to prevent the second accident. For the conventional judgment of liquefiable ground, if the soil type of the ground surface is the same, the potential liquefaction of the ground is also the same. In this paper, based on the soil-water coupled finite element method the influence of the depth of the liquefiable layer is taken into consideration and it is found that the seismic stability of the column varies significantly depending on the depth of liquefiable layer even though the embedment depth of the column is the same. Therefore, it is necessary to con-sider the depth of liquefiable layer for the high accuracy analysis.
Methods and Prospects of Seismic Research on Subway Structures
Authors: Quan Deng Zhou , Dai Yan , Guan Hong Jie
Published: September 2014

With the rapid development of underground space exploration in Chinese cities, the construction scale of underground subway structures expands continuously. This thesis elaborates the development history of seismic research on underground subway structures, summaries the seismic response characteristics of the structures, and analyzes the seismic research methods of underground subway structures including the prototype observation, theoretical analysis, numerical simulation and experimental research and discusses the characteristics and usages of each research method. At last, several important problems have been proposed for seismic research and seismic design of underground subway structures in China.
A Study on the Evacuation Characteristics of Large-Span Structures Buildings
Authors: Woo Su Jin , Hwang Eun Kyoung
Published: September 2014

The construction of large-span structures has been continuously increasing domestically since 2005, but despite this trend, there are no existing fire prevention regulations and building standards for large-span structures. Accordingly, as a basic research for coming up with evacuation safety techniques for large-span structures, this study sought to derive the evacuation characteristics of building occupants in case of a fire in large-span structures by formulating the definition of large-span structure and analyzing fire cases in spatial buildings at home and abroad. It is expected that the findings of this study will be utilized as basic materials for fire scenarios that consider fire scenario application criteria (human security standards, capacity calculation standards) as well as multiple risk factors such as frequency, probability, and combustion expansion and spread based on the evacuation characteristics derived from this study.
Analysis of the Aluminum Foam Protective Effect under Blast Load
Authors: Han Bang Xin , Li Li Xin
Published: September 2014

Terrorist attack is a great threat to the safety of the city. Due to particularity of the subway tunnel, the concrete lining will produce the strongly nonlinear response and dynamic damage under blast load, even collapse of the concrete lining structure. Protection technology of the concrete lining under blast load has become an urgent problem to be solved. By the means of the finite element software, this essay simulates the highly nonlinear response of concrete lining with aluminum foam. Aluminum foam has been widely used in the field of disaster preventive and mitigation. Application of the aluminum foam under blast load can absorb a large amount of impact energy and reduce the peak value of pressure in the concrete lining.
Failure Temperatures of Unprotected Composite Cellular Beams at Elevated Temperatures
Authors: Liu Shuai
Published: September 2014

Failure temperatures of composite cellular beams subject to a standard fire condition were investigated thoroughly by the Finite Element Method. A finite element model was developed for the fire performance analysis of composite cellular beams. Practical design guidance on the fire design of composite cellular beams is presented concerning the failure temperature.
Study of Prevention and Controlon on Mine Enterprise Occupational Disease
Authors: Zhou Jing Min , Wang Yong Qing , Sun Shi Mei
Published: September 2014

Used the MarkovTRAIN model, a mining enterprises pneumoconiosis incidence trends is prediced. The result shows that the unit pneumoconiosis development quickly, must strengthen the dust prevention and control. Using LEC method to mine in the workplaces where harm worker healthy environments were evaluated and harm through improved LEC method for scientific management, and put forward effective countermeasures to control, for the prevention of occupational health hazards in mines and puts forward scientific basis for control.
Study on Activity and Feature of Sediment Delivery of Debris-Flow in the Jiangjia Ravine
Authors: Shen Xing Ju , Zhang Jin Shan
Published: September 2014

Combined with recent observation data, the paper conclude that the debris flow break-out in high frequency in Jiangjia Ravine, and they belong to rainstorm type, which concentrated in the rainy season, especially during Jun to Aug. As a typical gully of viscous debris flow, the debris flow move with the bed process and obvious feature of surge. The intermittent flow possesses features of high intensity of delivery and long intermittent period. There have obvious relevance between the amount of sediment delivery and the surges of debris-flow break-out at the same year.
The Research for the Tankers in the Three Gorges Reservoir Region Oil Spilling Risk Assessment
Authors: Fan Xian Hua , Zhang Qing Nian , Wang Tao
Published: September 2014

To establish the possibility and risk assessment system of Three Gorges Reservoir Region tankers oil spilling through identifying the risk of tankers oil spilling and the sensitivity of environment resource. Introducing the fuzzy mathematics theory based on the traditional AHP theory then establish the fuzzy AHP model of the Three Gorges Reservoir Region oil spilling risk assessment. According to that, get the bigger water area of the oil spilling risk so that supply to the maritime administrations with the basis of the key point of the controlling oil spilling and optimizing the allocation of the anti-pollution resources.
Air Quality in a Semi-Enclosed Public Transport Interchange Station in Rush Hour
Authors: Li Yan Feng , Zhao Meng , Lin Xin Xin
Published: September 2014

Indoor air quality in a public transport interchange station in rush hour has been studied. Carbon monoxide is selected as the main pollutant for description of air quality. Ventilation systems, bus traffic and passenger flow, air quality have been investigated by on-site survey. Large eddy simulation technology has been used to analyze indoor air quality of public transport interchange station. The boundary conditions are determined according to the measured date. Indoor air quality results at heights of 0.8m and 1.6m in rush hour and two operating conditions of public transport interchange station are calculated. Results have shown carbon monoxide concentrations at height of 0.8m are higher than those at height of 1.6m. Air quality would reach the harmful degree within 5min to 10min if the ventilation system is not operating. The ventilation system should be operated continuously during the peak hour in order to meet the requirement of indoor air quality standards.
Fuzzy Adaptive PID Control of Indoor Temperature in VAV System
Authors: Bai Jian Bo , Li Yang , Wang Meng
Published: September 2014

VAV (VAV) air-conditioning systems always have the characteristics of nonlinear, strong coupling, large time delay, thus the conventional PID control method can't meet the requirement of control performance. In order to adapt to the changes of the load in air-conditioning systems, and make an accurate rapid response, this paper proposes a fuzzy adaptive PID control method. The temperature control by terminal air valves in VAV air-conditioning systems was selected as a control object, through collecting the deviation between setting value and room temperature, the parameters of the PID controller were selected to realize the accurate control of the temperature. In order to evaluate the effectiveness of the proposed control method, it was compared with conventional PID control method by simulation experiment, the results show that the proposed Fuzzy adaptive PID control method has more shorter setting time, less overshoot and more steady state performance than the latter.
The Research of Heat Loss Calculation Model of Directly-Buried Heating Pipe
Authors: Zhang Lin Hua , Yang Dong , Liu Ling , Chen Ting Ting
Published: September 2014

In this paper, we shall discuss the calculate method of heat loss of central heating pipes.the calculation formulas available are too complicated and inconvenienced to analysis the dynamic thermal conditions of heating pipeline. Therefore, this paper presents one order polynomial with least-squares solution, and then establishes linear equations of heating pipeline heat loss that the hot water temperature as a variable alone. It is based on the comparision and analysis of buried hot water heating pipeline heat loss formula. This method will simplify not only the calculation, but also the model of calculation analysis for different diameter, different insulation materials. The result is that the deviation of the formula is caused mainly by the thermal resistance. The relative errors of simplified formula and the selection formulas are less than 3%, which can meet the requirements for engineering applications.
The Software of Air-Conditioning Dynamic Load Simulation and Forecasting for the Walls of Building
Authors: Wang Xue Jin , Hong Jing , Zhang Zhi Hong
Published: September 2014

All-year thermal dynamic load simulating and energy consumption analysis for new energy-saving building is very important in building environment. According to thermal instantaneous response factors method, the paper develop a software to calculate air conditioning cooling load temperature and the dynamic thermal basic data that involve thermal response factors, periodic response factors, Z transfer function coefficient for new energy ­saving walls in building, which will provide the referable scientific foundation for all-year new thermal dynamic load simulation, energy consumption analysis, building environment systems control, carrying through farther research on thermal particularity and general particularity evaluation for new energy ­saving walls building. based on which, we will not only expediently design system of building energy, but also analyze building energy consumption and carry through scientific energy management. The study will provide the referable scientific foundation for carrying through farther research on thermal particularity and general particularity evaluation for new energy saving walls building.
GIS Technology Applied in Urban Plot Ratio Statistics and Land Suitability Evaluation
Authors: Ma Da Xi , Zeng Chun Qin , Ai Qiang
Published: September 2014

GIS technology can be used to support spatial data collection, management, processing, analysis, modeling and display to solve complex planning and manage problems. [2,3] Plot ratio is an important indicator in the reasonable development and utilization. City land suitability evaluation is the basis of urban land development direction. [1] This paper using superposition analysis module and spatial analysis extension module in ARCGIS10.1 software to volume rate statistics, carry out the city land suitability evaluation, and make the results visualization.
Study on Vegetation Fraction Cover Retrieval over Chuxiong Prefecture from TM Imagery
Authors: Xi Wu Jun , Wang Xue Liang
Published: September 2014

The paper retrieved vegetation fraction cover over Chuxiong Prefecture from TM Imagery by dimidiate pixel model on February 19h, 2003. The results showed that the mean vegetation fractional cover in Chuxiong prefecture was 0.400117, it’s secondary area mean vegetation fractional cover from large to small were Lufen county, Shuangbai county,Chuxiong city, Yaoan county, Dayao county, Wuding county, Nanhua county, Yongren county, Mouding county, Yuanmou county.
Analysis of Architectural Characteristics of Modern Villas in Mount Lu
Authors: Li Xiao Qiong , Zou Lei Rong
Published: September 2014

With modern villas in Mount Lu as the main research object, the author described and analyzed historical period, architectural style, construction technology, function positioning construction environment of villas in Mount Lu based on systematic investigation, revealed unique historical background and distinctive architectural features of villas in Mount Lu, and offered a systematic theoretical basis for protection, restoration and reconstruction of modern villas in Mount Lu.
Restoration Strategies for Modern Architectural Masonry Facades – Tai'an Road in Tianjin
Authors: Lan Wei
Published: September 2014

In its conservation and restoration of modern architecture in Tai’an Road historical and cultural block, according to the conservation status and damage characteristics of the historic materials in different parts, the paper analyzes its causes and deterioration mechanism, and employs restoration techniques based on eliminating the mechanism that drives damage of historic materials. In addition, it tracks and assesses the quantitative nodes of remediation technologies and optimizes restoration technology and strategy.
Soul of Classicality in Western Architectural Design
Authors: Liu Cong Ru , Lin Ming Sen , Li Qing
Published: September 2014

The classicality of the western architecture establishes its foundation at the beginning of the ancient Greece, is flourished in the ancient Rome and revitalized in the renaissance period, extends to the classicism and the classical revival, and finally is overthrown by the postmodernism. By going through development and prosperity in the past thousands of years, the classical spirit has always played a greatly significant role in the field of western architecture design.
Study on the Restoration and Protection of Huixian Taoist Temple in Wuxiang of Shanxi
Authors: Ye Jian Hua
Published: September 2014

According to the survey Huixian Taoist Temple history and heritage buildings, based on a comprehensive study of Surveying and mapping, on the plane, architectural structure, artistic form, the value of information are analysed, and effectively solves the problem of Huixian Taoist Temple view of building protection and repair.
Study on Intangible Cultural Heritage Protection of the Architectural Cultural Heritage
Authors: Zhao Zhi Qing , Tao Li
Published: September 2014

In the current context of globalization and regional characteristics of urban and rural culture general lacking, due to the long history and has the heavy connotation, the historical cultural heritage reflected the rich local culture and traditional cultural imprint. According to the definition, the content and relationship of material cultural heritage and intangible cultural heritage, this paper intensively study the non-material cultural heritage factors loaded by buildings architecture cultural heritage, and presented the problems and coping methods during the course of the Intangible Cultural Heritage Protection.
Characteristic Analysis and Management of Human Resource in EPC Project
Authors: Hong Tao , Ju Hai Yan , Luo Chang Tai
Published: September 2014

Based on the theory of project management and human resources, combining with the practical construction situations in China, using theoretical analysis and comparative analysis, four important characteristics are extracted in engineering project using EPC mode, that is, mobility, duality, commodity & humanity and collaboration. Furthermore, the origins and implications of above characteristics in depth are analyzed, and some management methods are presented with the guidance in connection with them in theory.
Discussion on Objective-Cost Planning for Construction Project Objective-Total Cost Management
Authors: Nie Shu Min , Liu Jun Yan
Published: September 2014

The construction project for the construction woks is the cost center of the construction enterprise and the standpoint of the cost management for the construction enterprise, strengthening the cost management is the inevitable choice of the construction enterprise to accumulate the funds and enhance the competitiveness. Since the construction project period is long, it is complex to recognize the median income and measurement of the intermediate cost, and the bidding period and the cost incurred after putting into use are uncertain, the traditional cost management method no longer meets the practical needs of the management for the building construction enterprise. This requires us to be innovative in the cost management mode of the construction project, and make a scientific estimation in the future level of cost and possible future trends through the objective-cost planning research of the construction project.
Exchange Rate Risk Estimates of the Foreign Contracted Projects Based on the Model of VaR
Authors: Zhao Li Zhu , Bai Rui Qiang , Shao Yu Peng
Published: September 2014

China implements a floating exchange rate system after reforming the exchange rate mechanism in 2005. So far, nearly eight years, the RMB against the U.S. dollar increased from 8.2:1 to 6.1:1. Exchange rate risk of China's foreign contracted engineering industry has become a serious problem in the rapid development of the industry situation, this paper established exchange rate forecasting model base on the model of VaR through analysis the daily average exchange rate from July 22, 2005 to September 30, 2013, and estimate the rate of return by using the variance - covariance, historical simulation method, providing a theoretical basis for avoiding the exchange rate risk of China's foreign contracted projects.
Study on Risk Allocation and Management Performance Measurement of Construction Project
Authors: Yin Yi Lin , Li Peng Juan
Published: September 2014

Recently, risk allocation (RA) has become a research focus as a pre-variable for its damaging to the improvement of project management performance (PMP), but the related measured operations were absence. Based on the theory of incomplete contract, firstly, this paper mapped the initial contract,renegotiation and contract efficiency into the whole process of project RA, constructed a three-stage theoretical models including initial risk allocation (IRA) for contracting , project management performance (PMP) and risk reallocation for contract performance, and depicted their measuring dimensions. Secondly, this paper developed RA measure scale based upon questionnaire design and empirical analysis, and the reliability and validity were analyzed. The research guided significance for contractual arrangements for the project RA and exploring relevance to other variables.
Life Cycle Cost Analysis for Substation
Authors: Zheng Yan , Su Di , Wang Xu , Cai Yu
Published: September 2014

Life Cycle Cost of Construction engineering project management is a combination of modern management theory—system theory, cybernetics and information theory combined with the construction project. In this paper, a model of substation life cycle cost is built comprehensively, by making a model for the cost estimating of substation design and construction cost. Meanwhile, the operation loss, operation maintenance cost are analyzed and calculated, the estimate of the retirement costs is carried on. On these basics, analyzes the relationship between the cost, then the numerical example is given ultimately. Eventually, optimal reliability and economical efficiency is achieved.
Analysis on Characters of Technology Innovations in Shenzhen Enterprises
Authors: Mou Tong Hua , Du Fang
Published: September 2014

According to current research result on the meaning, foundation, and evaluation method of technological innovation of enterprise in Shenzhen, the character of the innovation can be summarized as: utilizing the demand of the current market as a guideline, cooperating with research centers and universities, applying most of the innovation in practice quickly. For the future work, the research could be focused on the factors which might affect the ability of technological innovation. Those factors could be either external such as external finance and government regulations, or it could be internal such as the size of the enterprise. At the same time it is necessary to establish the innovation and evaluation service system for small and medium sized enterprises (SMES).
Bidding Decision Based on the Multi-Objective Weight Gray Target Model
Authors: Han Rui , Gao Xu Kuo
Published: September 2014

Based on summarizing the relevant research of domestic and international on the influence factors of international project bidding decision as well as limitations,a comprehensive evaluating index system was built,and then the paper established a bidding plan-selecting method through combing entropy method with multi-objective weighted gray target decision together.In this way,the optimized bidding plan could be selected by computation and comparison. And applied this model to a specific case to illustrate its effectiveness.
Causes and Control Measures of Cracks in Masonry Structure
Authors: Tong Zhi Neng
Published: September 2014

This paper deeply analyses the classification and formation of cracks of masonry crack, puts forward the control of cracks in masonry structure and the concrete structure, and provide a useful reference for engineering construction personnel.
Research on the Evaluation System of Implementation Effect of Learning-Oriented Construction Enterprise Based on Matter-Element Model
Authors: Tang Liang , Shen Ju Qin , Liu Bo , Bao Li Rong , Xu Zi Lin
Published: September 2014

Against the background of Chinese construction enterprise constructing learning-oriented enterprise, this essay probes into the methods of evaluating the implementation effect of Chinese learning-oriented construction enterprise. The evaluation system of implementation effect of Chinese learning-oriented construction enterprise is constructed from four aspects, i.e. social satisfaction, interior operation, financial position as well as learning and growth and evaluation model of implementation effect is also built based on matter-element model.
Research on the Life Cycle Cost Control of Urban Complex Based on the Sustainable Development Theory
Authors: Li Jin Hua , Zhang Hong Yue
Published: September 2014

The developer should apply the idea of sustainable development in each stage and consider the cost comprehensively. In the decision-making phase, the developer should consider the social and economic benefits, demonstrate the feasibility of the project. At the design stage the design unit should make full use of the new technology and renewable resources to design the urban complex. In the implementation stage, the construction unit should control costs within budget and reduce the pollution to the environment. In the operational phase, the tenement and the users should utilize resources circularly and protect environment. Research on sustainable development on the city complex can not only play a positive role for building materials saving, energy saving, resources and the environment protection, but also can have a great impact on the economic benefits of the urban complex and can greatly reduce the operation cost of the late.
Standardization Study of Assembly Floor Slab in Steel Frame Structure
Authors: Wang Ya Bo , Dou Gao Feng , Xi Chuan Hao , Qian Lei , Liu Han Ting
Published: September 2014

The types of assembly floor slab member and the present development situation of assembly floor slab standardization at home and abroad is presented in the article, as well as assembly floor slab layout schemes and its advantage and disadvantage is presented, and the assembly floor slab standardization scheme is proposed to promote the application of assembly floor slab in steel frame structures.
Study on Housing Status and Housing Security of College Graduates
Authors: Su Cong Cong
Published: September 2014

With the continuous increase of the number of college students, more and more college graduates choose to stay in cities for work and living. Most of them were born in rural areas and central towns, who live in urban villages after graduation. They have received excellent higher education, but they engage in low-income and unstable work; they are the hard core of social construction in future. However, their current living status is worrying. Thus it has become a major social issue in social and economic transformation period of China. This paper conducted field survey on the status of housing security of college graduates, analyzed its cause, and proposed corresponding countermeasures and suggestions referring to domestic and overseas relevant experiences, so as to let more low-income college graduates be able to enjoy the benefits brought by urban housing security.
Study on the Comprehensive Assessment of Controlling Efficiency of Engineering Project Based on Matter-Element and GAHP Model
Authors: Liu Bo , Shen Ju Qin , Xu Gao Yan , Tang Liang , Xu Zi Lin , Sun Fu Hua , Bao Li Rong
Published: September 2014

With the aim to improve the controlling efficiency of engineering project, this essay probes into the comprehensive evaluation of controlling efficiency of engineering project and put forward scientific comprehensive evaluation method to provide support to reasonable comprehensive evaluation of controlling efficiency of engineering project. Complete comprehensive evaluation index system of controlling efficiency of engineering project is constructed from three aspects, i.e. implementation efficiency of construction objective, external coordination efficiency and professional qualification enhancement efficiency; based on matter-element analytical method, mathematic model that could evaluate controlling efficiency of engineering project comprehensively is constructed.