bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experimental Study on the Global Stability of the xiaowan Arch Dam Using a 3D Geo-mechanical Model Test
Authors: Dong Jianhua , Wang Xianlian , Chen Jianye , Chen Yuan , Yang Baoquan , Zhang Lin 
Published: September 2019

Abstract
In this paper, a three-dimensional geo-mechanical model test for the Xiaowan high arch dam was studied and the topographical and geological features, the distribution of weak structural planes, the shallow relaxation unloading phenomena were simulated. Furthermore, a type of model material known as the temperature analogous material, whose strength varies with temperature throughout the experiment, was used to simulate the decrease in shear strength of the weak structural planes. The deformation characteristics and failure mechanism of the dam foundation and abutments were obtained by using comprehensive test method, which considered both the overloading and strength-reduction techniques. Through data analysis, the strength reserve coefficient, the overloading and the global safety factor were obtained. Synthetic analysis of the test results indicates that the displacement of the mid-upper abutment was reduced and the failure zone become smaller due to the significant reinforcement effects of concrete displacement plugs on the faults and alteration zones. The failure pattern shown in the model test indicates that reinforcements should be installed at faults F11 and F10 above an elevation of 1245 m in the right abutment and the rock above the thrust block in the left abutment.
Analysis on Implementation Effect of Groundwater Over-exploitation Comprehensive Control Water Conservancy Project—Taking Linzhang County as an Example
Authors: Wang Danyang , Zhang Jing , Zhao Jinyong , Fu Yicheng , Zhao Xinkai , Gong Shaopeng 
Published: September 2019

Abstract
In order to effectively solve the problem of over-exploitation of groundwater in Hebei Province and achieve the balance of groundwater recovery, Hebei Province began to conduct pilot research on comprehensive management of groundwater over-exploitation in 2014. Taking Linyi County in the south of Hebei Province as an example, this paper studies the effect of pressure extraction on groundwater over-exploitation comprehensive treatment of water conservancy projects in 2015, analyzes and summarizes the experience, deficiencies and improvement measures of groundwater pressure mining work, in order to follow the groundwater pressure mining work. Provide guidance for reference. The results show that: Linyi County’s 2015 water conservancy project achieved a pressure recovery capacity of 4.02 million m3, and the water-saving pressure mining effect was remarkable. Among them, the sprinkler irrigation water-saving facilities have an average water saving capacity of 105 m3/mu, and the water-saving efficiency is obvious. In addition, the next stage of work should pay attention to the study of water-saving measures based on water-saving management and regional agriculture represented by crop planting structure adjustment. Irrigation pattern, implementation of field engineering work, to form a regional scale, intensive water-saving irrigation pattern, promote the promotion and application of groundwater over-exploitation comprehensive treatment in Hebei Province.
Explore on the Dynamic Cause of Local Scouring
Authors: Liu Meng , Zhang Hong-wei 
Published: September 2019

Abstract
Based on the physical model test method, the dynamic cause of local scouring is explored. Result shows that uneven distribution of vertical turbulence intensity of near-bottom flow is the main driving force for local scouring. Distribution characteristics of vertical turbulence intensity of the near-bottom flow determine the spatial shape of the local scouring, that is, the range and the extreme-deep point of the local scouring correspond to the position of the strong turbulent zone and maximum value respectively. When the effect of the near-bottom strong turbulence zone on the riverbed is completely isolated, local scouring disappears, otherwise it will occur in the uninsulated part.
An Extensive Analysis of Oscillations in Arbitrary Harbors with Reflecting, Absorbing and Transmitting Boundaries – Case study of the Port of Indiana
Authors: Chang YanSheng , Wu JiunYuen 
Published: September 2019

Abstract
The harbor resonance numerical model can be applied to wave response in the harbor, groups of linear and nonlinear waves with high crest pose hazards to ships, inducing harbor resonance and over-topping of structures. The model, a two-dimensional linear, inviscid, dispersive, hybrid finite element to simulate harbor resonance with conservation of energy approach, is applicable in an offshore or coastal harbor of arbitrary shape. The model incorporates the effects of variable bathymetry, bottom friction, variable, full or partial absorbing boundaries as well as wave transmission through permeable breakwaters. The accuracy and efficiency of the present model will be verified by comparing with those of experimental and field data of the Port of Indiana, where wave incidences of ship damage, broken mooring lines and barge sinking, particularly in the grain dock area. It is important to study the behavior of incident wave periods and the associated maximum harbor resonant response at key points within the harbor. The model results were proved to be consistent with observations which lead to the conclusion that the model is well suited for use in harbors of irregular geometry with transmissivity boundaries. The model presented herein is a realistic method for solving arbitrary harbor resonance problems.
Minimum Potential Energy Principle on Slip Calculation of Composite Beams
Authors: Chen Xu , Xiong Pingjia , Ma Jianghong 
Published: September 2019

Abstract
Energy method has the mathimatical convenience because it is scalar. The work potential is work done by external forces. After it is transfered to the work done by the internal force, the classical second-order differential equation of slip effects is deduced according to Minimum Potential Energy Principal. In the derivation, integration by parts is used to transfer the higher order variation into the first order according to Euler Equation. For simply-supported composite beam, the slip-induced stresses are self-equilibrium and the redistributed internal forces are significant. The slip effects is important for composite beams in service time, like the compresion stress of the top flange of steel beam may become the 11.5 times, which arises the problem of local buckling.
Discussion on Abnormal Values in Static Penetration Data
Authors: Xue-xiang Liu , Dao-xiang Wu 
Published: September 2019

Abstract
As the mainstream method of in-situ testing technology, static penetration testing is widely used. At present, the implementation of a large number of projects must be based on its test results. It also makes us have to pay attention to the reliability of its test results. In this paper, based on the previous experience and combined with the static penetration data in Hefei area, the reliability of test data is studied. The abnormal data in the static penetration data is eliminated and the influence of the abnormal data on the calculation results of correlation distance is expounded.
Analysis on the Defense Safety Design of Non-gated Residential Building’s Outside Environment in Changchun in the Perspective of Reducing Spatial Blind Zones: A Case study of Sanfujie Community
Authors: Wang Keqi , Chen Xiaodong , Liu Lu 
Published: September 2019

Abstract
Rapid urbanization in China brings about many spatial blind zones (abbr. SBZs), which are kinds of undesirable spaces that stimulate urban crime. The SBZ is divided into three categories, which are the position-based SBZ, the morphology-based SBZ and the atmosphere-based SBZ. The physical elements that cause the SBZ mainly contain three aspects, the building factors, the landscape factors and the traffic factors. After analyzing how the SBZ impacts on the defense safety, the author proposes the series of thoughts on how to cut down SBZs based on CPTED theories. Meanwhile, the author analyzes the defense safety problems about position, morphology and atmosphere caused by improper design of buildings, landscape and traffic factors in Sanfujie, a typical non-gated residential community, and puts forward corresponding improvement strategies.
Stochastic Finite-Fault Method Based on Dynamic Corner Frequency to Simulate the Mw6.2 Tottori earthquake in Japan
Authors: Xia Songlin , Liu Qifang , Song Jian 
Published: September 2019

AbstractStochastic finite-fault method is the main method to simulate near field strong earthquakes in current seismic engineering. For specific ground motion, the accuracy of parameter selection is important, such as field effect, because the number of rock sites is scarce in many areas of China, the calculation of crustal amplification and site amplification of a specific soft soil site can not only eliminate the limitation of station selection, but also improve the accuracy of simulation results. In this paper, a stochastic finite-fault method based on dynamic corner frequency is used to simulate the Mw6.2 Tottori earthquake on October 21, 2016 in Japan. The comparison with the actual records shows that the simulation results are in good agreement with the short period and have great feasibility. This paper discusses the differences between the simulated response spectra (PSA) of stations with various azimuths and the observed one. Meanwhile, it also demonstrates the dissimilarities in simulation results between the stations located on the hanging wall and those located on the flat wall of the fault plane. The results show that for soft soil sites, crustal amplification and site amplification, as well as the geometrical position relationship between stations and faults have a certain impact on the simulation results. Based on the calculation of specific crustal amplification and site amplification in a specific region, the location relationship between stations and faults is included in the analysis, so that the future earthquake can be predicted more accurately, and an important reference can be provided for the disaster assessment in this region and the site selection of major projects.
The effect of duration of strong ground motion on the ductility demand of SDOF structure
Authors: Lingfeng Kong , Maosheng Gong , Zhanxuan Zuo 
Published: September 2019

Abstract
As one of the basic parameters of strong ground motion, the duration of strong ground motion has not been considered in the seismic design codes over the world. To study the ground motion duration on the effects of the SDOF structure ductility demand, the Ds5-75 is chosen as the duration index, and the ductility demand ratio spectrum under long and short ground motion is calculated, then the effect of duration on structural ductility demand under different strength reduction factor is analyzed. The results show that the ductility demand of the structure under long duration ground motion is significantly greater than that under the short duration ground motion. For most periods, the ductility demand of long-duration ground motion is 1.3 times that of short-duration ground motion, and the maximum is 2.5 times. It is suggested that the effect of duration should be considered when the time history analysis of structure is carried out.
A New Water Leakage Classification Method for Tunnel Lining Based on Traffic Safety
Authors: Ding Hao , Jiang Xinghong , Li Ke , Hu Xuebing , Cheng Liang 
Published: September 2019

Abstract
Leakage disease would adversely affect the lining structure and operation environment, which may endanger the normal operation of tunnel projects. Existing leakage classification standards for tunnels are mainly based on the apparent view state, and the impacts of the actual operating environment are not fully taken into consideration. Based on the current classification standards, guidelines and the shortcomings of the current classification system, a new method has been put forward to classify the leakage of tunnel lining considering the influence on driving safety. In addition, Numerical software (CARSIM) is used to investigate the safety states of passenger car and freight car in different leakage level, vehicle types and driving speed conditions. Simulation results show that the maximal speed of passenger car on the road surface with a leakage-water depth of 1 mm, 5 mm and 11 mm is 110 km/h, 95 km/h and 75 km/h respectively; while that of freight car is 90 km/h, 85 km/h, and 60 km/h respectively in the same condition. The results of overtaking simulation on the two-shift line surface with 5-mm-deep leakage indicate that cars will not be unstable as the speed increases. However, when the speed of passenger car exceeds a critical value, a large error between actual trajectory and the expected dual-trajectory would appear. It would easily cause lane departure and vehicle collision. When the speed of freight car exceeds a critical value on the double-shift line, the yaw rate, side slip angle, lateral acceleration and lateral displacement velocity would go out of control. Combining with the tunnel leakage states and driving operation, this paper establishes a new classification method of tunnel leakage disease based on operation safety. It makes up for the insufficiency of tunnel leakage classification method and has guiding significance in actual tunnel projects.
A Capillarity-dependent Model for Prediction of Chloride Penetration Process into Concrete in Artificial Splash Test
Authors: Han Xun , Guan Yunfei , Cao Yongyong , Zhang Jianyi 
Published: September 2019

Abstract
In order to better simulate the penetration process of chloride ions in the splash zone of concrete, this paper modified existing chloride ion transport model on the basis of capillarity-dependent model under unsaturated and non-pressure conditions to make it applicable to the calcualtion of choride flow flux. The artificial splash tests is firstly designed and conducted under varied conditions of water to cement ratio, splash time duratinoa and splash period. Then the original chloride constitutive model is improved by enhancement of convection term calculation. At last, the authors simulate the chloride ions penetration process under different conditions by reasonble design of equivalent chloride and moisture boundary to verify the effectiveness of capillarity-dependent model.
Micro-analysis of Marine Sand From Zhoushan Seas
Authors: Di WU , Yan Qian , Wang Ya-jun , Gan Xiao-qing , Dong Zhi-hong , Wang Jin-bao , Chen Jing-jin 
Published: September 2019

Abstract
The main salt components and ion content of seawater were qualitatively and quantitatively analyzed. The results show that the seawater in this region has low ion content and low salt content, and direct application is relatively beneficial to engineering. Meantime, the property test was carried out to investigate the basic physical behavior of the goal sea sand. The results show that Zhoushan sea sand has low chloride ion content, uniform particle size and Low mud content.
Pricing and Incentive Strategy for Green Building Supply Chain with Incentive Mechanism
Authors: Jiang Wen , Huang Xiaoyan , Zhou Ying 
Published: September 2019

Abstract
We are witnessing more frequent extreme weather events due to the global warming. Construction industry has a high carbon footprint, the development of green building is a necessary way to protect the environment and achieve sustainable development of construction Industry. The government has formulated a series of financial subsidies policies and tax preferential policies to promote the development of green buildings. Contractors play an important role in the construction process, but there is no incentive mechanism to encourage contractors to work hard to improve the green building level. This paper studies the incentive mechanism and pricing strategy of green building under a two-level supply chain system consisting of a developer and a contractor. The optimal incentive intensity and optimal price of the developer, and optimal green level of the contractor is obtained. The results show that the incentive mechanism can not only increase the profits of the developer and the contractor but also improve the green building level, then promote the sustainable development of the construction industry.
Assessment of Seismic Fragility of RC Fram Based on Different Methods for Selecting Index Threshold
Authors: Jitao Yao , Jun Gao , Liuzhuo Chen 
Published: September 2019

Abstract
In the current structure damage assessment process, different methods of selecting damage index threshold will significantly affect assessment results. OpenSees finite element software is used to build a 6-story RC frame structure model. Then, the inter-story drift and residual inter-story drift are used as single and double indices to calculate threshold values using the code method and the incremental dynamic analysis method. Evaluation results vary more significantly when the damage is evaluated using a single index. When the threshold is selected based using the code method with a double index, the results are more conservative. The stronger the correlation between the inter-story drift and residual inter-story drift is, the more conservative the results are.
Experimental Study on At-rest Lateral Earth Pressure Coefficient of Cemented Clay
Authors: Wu Zhiqiang , Cai Zhengyin , Xu Kai , Guan Yunfei , Huang Yinghao , Geng Zhizhou 
Published: September 2019

Abstract
The determination of lateral earth pressure is of practical importance and plays an important role in the design of retaining structures. Test results of at-rest lateral stress, coefficient of earth pressure at rest and its change law of an artificially cemented clay were presented in this paper. A K
0 consolidometer was utilized to measure the at-rest lateral stress and vertical compression of the specimen. The test material was a Lianyungang marine clay and was mixed with a special kind of Portland cement that was designed for ocean engineering. The cement contents were 4, 6, 8, 10 and 12% by weight of dry soil particles and the curing time was 7, 14, 28, 60 and 90 days. The test results indicate that the at-rest lateral stress of cemented clay is different from that of uncemented clay. And at-rest lateral stress decreases rapidly with an increase in cement content and curing time. However, the lateral stress increases sharply when the applied load exceeds the vertical yield stress, which causes a corresponding change in K0.
The application of artificial immune algorithm to earthquake relief route planning
Authors: Liu Lifeng , Wang Zhiyong 
Published: September 2019

Abstract
After an extreme earthquake attacks an urban area with many mountains, the main objective of a search and rescue operation is to minimize the number of fatalities. Therefore the task of transportation rescue resources to operational areas is of great importance to disaster managers. This paper presents a quick path planning method based on Artificial Immune Algorithm (AIA) and helicopter operation performance in order to design an optimal path for an operational area. First, a simulation of an earthquake is implemented in environment only including terrain threat. Second, a more complex model contains terrain, weather, building and communication threats simulation is executed and the resulting performance measures are evaluated by considering the survival time and total value for taken out entrapped occupants in the disaster area. Additionally, the best parameters of planning path for dual helicopters to an operational area are determined. Further work will be dedicated to adding real 3D terrain model into the current threat model.
An Experimental Study on the Behavior Deterioration Trend of Friction Pendulum Bearings with Corrosion Time for Offshore Isolated Bridges
Authors: Zhao Guifeng , Ma Yuhong , Li Yanmin , Su Liangjian , Zhou Fulin 
Published: September 2019

Abstract
At present, the behavior deterioration trend of friction pendulum bearings (FPBs) widely used in offshore bridges under marine environment isn’t still clear. In this study, periodic-salt-spray and wetting–drying cycle accelerated corrosion tests were used to simulate the corrosion circumstances of FPBs in the splash and atmospheric zones, respectively. Eight sets of FPBs with a vertical bearing capacity of 35 t were designed as test samples. The environmental factors that affect the bearing behavior deterioration were analyzed; the test accelerated ratios of the factors were discussed; two kinds of test schemes were designed for the FPBs; and the macroscopic appearances of the FPBs at different corrosion times were observed. The trends of the initial static and dynamic friction coefficients with corrosion time were extensively analyzed, and the behavior deterioration trends of the mechanical properties of the FPBs were analyzed. The results show that in both the splash and atmospheric zones, the initial static and dynamic friction coefficients with corrosion time show an increasing periodic curve, but the behavior deterioration trend and period of FPBs in different locations are different. The vertical and horizontal stiffness of FPBs almost did not change with the corrosion time. The trends of equivalent damping ratio with the corrosion time are consistent with the dynamic friction coefficient. Based on the experimental results, the behavior deterioration trends of the initial static and dynamic friction coefficients of FPBs with corrosion time were obtained, which provides a basis for the seismic performance evaluations of offshore isolated bridges in their entire service lifetime.
Seismic dynamic response analysis of permeable breakwater on piled foundation considering pile-soil interaction
Authors: Zhang Duohan , Gui Jinsong 
Published: September 2019

Abstract
In order to discuss the seismic response of pile foundation permeable breakwater structure under different working conditions, the dynamic implicit module in finite element software ABAQUS is used to analyze the seismic dynamic response of pile foundation permeable breakwater. Considering the nonlinear characteristics of pile-soil interaction the breakwater is simulated under different seismic intensity conditions. The acceleration, bending moment of pile foundation are analyzed by time-history analysis method. The influence of pile diameter on the whole structure is compared. The results show that the stronger the earthquake is, the more obvious the overall dynamic response of the structure is. The bending moment of pile body decreases first and then increases. The wider the diameter of pile foundation, the greater the stiffness of the whole structure, resulting in an increase in the seismic force received by the structure. Compared with the static load, the influence of earthquake on the permeable pile breakwater can not be ignored.