bluuebunny/crossref_metadata_2025_split huggingface dataset:
Study on Lateral Bearing Capacity of Cantilever Rigid Piles under Large Horizontal Displacement
Authors: Feng Zhongju , Min Wu , Kai Feng , Guan Jiang , Dong Yunxiu , Yin Jixing , Bai Shaofen 
Published: April 2020

Abstract
In order to analyze the lateral ultimate bearing capacity of cantilever rigid pile with large horizontal displacement, this paper studies the distribution characteristics of soil resistance on the side of pile and the calculation method of lateral bearing capacity of pile foundation by means of numerical simulation and theory. The results show that under the condition of large displacement, the soil in front of the pile is yielded layer by layer from top to bottom, and when the soil layer on the side of the pile reaches the limit displacement, the soil resistance on the side of the pile no longer increases with the increase of displacement. The lateral ultimate bearing capacity of cantilever rigid pile under large horizontal displacement is fitted and calculated by using the ultimate displacement of pile side soil, in which the fitting effect of modified “m” method is the best, and the applicable range of foundation coefficient distribution needs to be further studied.
Analysis Method of Subjective Uncertainty
Authors: Jitao Yao , Mingdong Yan , Bin Huang 
Published: April 2020

Abstract
Understanding the uncertainty of objective things in actual engineering is inevitable, and it has a direct impact on engineering decision-making. In view of this, there are many theories—fuzzy mathematics, evidence theory and other related theories have been put forward, and which have been widely applied in practical engineering at present. However, these theories are based on their specific uncertainties, which are large different from each other and do not completely reveal the common attributes of such uncertainties. In this paper, a basic analysis method of subjective uncertainty is established by based on the concepts of degree of belief and unascertained quantity. The paper will introduce the axiomatic operation rules of degree of belief, and further elaborate the subjective uncertainty analysis method. Based on the basic analysis methods of fuzzy mathematics and evidence theory, a unified method of subjective uncertainty analysis is reviewed and improved. It can help to establish a unified understanding of subjective uncertainty, and can help to comprehensively analyze the influence of various subjective uncertainties on engineering decision-making.
Research on post-buckling performance of grid composite members
Authors: Li Chao , Wang Menghong , Cao Xiaonan 
Published: April 2020

Abstract
In this paper, the combination of simulation and experiment is used to study the performance of composite members after buckling. Considering the influence of initial defects on the buckling performance of the members, using the basic theory of contact and friction and the method of nonlinear analysis, the model of the composite members was established by ABAQUS finite element software and analyzed. At the same time, the compression test of the composite member was carried out to verify the correctness of the simulation. Finally, the calculated length coefficient of the composite member are obtained, which lays a foundation for the overall analysis of the long-span space grid structure.
Analysis and correction of stress error in construction monitoring of cantilever cast prestressed beam bridge
Authors: Pan Zhi shun 
Published: April 2020

Abstract
In order to correct the monitoring stress of long-span prestressed concrete girder more accurately, and consider the characteristics of bridge load gradually applied during cantilever construction, this paper proposes an accurate correction method for monitoring stress of long-span prestressed concrete bridge. Based on the linear creep theory and Bauer boltzmann (L.B oltzman) superposition principle, the invariant elastic mode of traditional calculation isreplaced by the equivalent elastic modulus from load-to-pre-calculation, and the formula of concrete creep, and the time-varying elastic mode is taken into account. The effect of concrete shrinkage and temperature change softer on the real stress value of the structure is accurately corrected by separating and removing stress-free strain from the measured strain. This method is applied to the calculation of the measured stress in the key section of the main beam of a long-span continuous beam of a high-speed railway. The results show that the modified stress value is in good agreement with the theoretical value and the error is significantly reduced, which verifies the reliability and accuracy of the modified method.
Calculation and Analysis of Box Girder Temperature Effect of Large Cantilever Bridge under the Solar Radiation
Authors: Cheng Wang , Wenchao Liu , Chen Zheng 
Published: April 2020

Abstract
This paper analyzes the influence of solar radiation on the prestressed concrete wide box girder with a large cantilever. The experimental research is carried out by arranging the embedded deformation monitoring sensor, and the actual temperature deformation curve of the large cantilever box girder subjected to solar radiation is obtained. Besides, the deformation calculation model of box girder under the influence of solar radiation is established by ANSYS finite element software, so as to obtain the deformation distribution of large cantilever prestressed concrete under solar radiation. Calculation results are fitting well in with the actual tested results, with an average error of 7.97%. As the boundary conditions are quite ideal, the tested results tend to be larger. Relative studies can provide some guidance and suggestions for the deformation control and design of this type of bridge.
Data Center Airflow Organization Optimization Based on Entransy Loss Evaluation
Authors: Fang Liu , Kaize Xing , Zhigang Wang 
Published: April 2020

Abstract
Refrigeration system is an important part of high-efficiency data centers. Air distribution optimization is an important means of energy saving in the air conditioning system. In this paper, aiming at the shortcomings of the existing evaluation indexes of air distribution in data center, the Entransy loss method based on the thermodynamics principle is applied to the evaluation of air distribution in the data center. Taking a standardized data center as the research object, CFD is used to simulate the four working conditions of its cold and hot channels. The results show that the thermal Entransy loss can effectively evaluate the cooling capacity utilization of different airflow organization forms, which provides a theoretical basis for optimizing the airflow organization and evaluating the heat transfer performance of the entire engine room. The results show that the thermal Entransy loss can effectively evaluate the cooling capacity utilization of different airflow organization forms, which provides a theoretical basis for optimizing the airflow organization and evaluating the heat transfer performance of the entire engine room.
Parameter Estimation of Muskingum Model based on Whale Optimization Algorithm with Elite Opposition-based Learning
Authors: Qiang Zou , Qiaoping Fu , Xingjun Hong , Jun Lu 
Published: April 2020

Abstract
In order to solve the problem of complexity and poor accuracy for parameter estimation of Muskingum model, the Whale Optimization Algorithm with Elite Opposition- based Learning (EOWOA) was established to estimate the parameters of Muskingum model. EOWOA used the elite opposition-based learning to improve the whole search capability of WOA, and the evolution process can be quickened, moreover the convergence speed and accuracy was also improved. And the benchmark function tests demonstrated that EOWOA outperforms DE, PSO and WOA. Finally, the results of application showed that IWOA can effectively estimate the parameters of Muskingum model, and the precision of this method wins great satisfaction, thus to provide a new way in the field of channel flood routing.
Simulation Analysis on Force Characteristics of Transmission Tower by Foundation Settlement
Authors: Dong Boyuan , Chen Kongliang 
Published: April 2020

Abstract
In order to study the foundation foundation settlement under the most unfavorable conditions for the comparative analysis of the internal force development and deformation of the transmission tower and its jack-up electric tower, combined with the finite element structural analysis software Midas, a 110kv transmission tower and its jack-up tower are carried out. Modeling and comparative analysis. In this paper, the corresponding laws are summarized, and suggestions for the design of the jack-up electric tower under the action of foundation displacement are proposed for designers’ reference.
Strength Research and Structure Improvement of a Semitrailer Based on Finite Element Method
Authors: Chen Yajuan 
Published: April 2020

Abstract
Based on the finite element theory, the analysis model of semitrailer is established. On this basis, the limit condition method is applied to simulate the stress level of the structure under four typical working conditions including bending, torsion, turning and emergency braking. The weak areas with insufficient strength are found out. Meanwhile, it proposes corresponding improvement measures based on the analysis results to provide a theoretical basis for the structural design engineer.
Load Transfer Law and Influence Factors of Piles in Deep Loess Area
Authors: Cao Lixiang , Du Ting , Yan Tiecheng , Liu Liping , He Xinyao 
Published: April 2020

Abstract
This paper summarizes the characteristic of four kinds composite foundation - compacted concrete composite foundation, Lanzhou loess foundation, highway soft soil foundation, just - soft pile composite foundation. Based on load tests and pile stress analysis of the measured data, summarizes the four foundation pile load characteristics and load transfer mechanism. The factors that influence the pile load transfer law are those: the pile tip soil properties, Pile shaft stiffness and length to diameter ratio, cement mixing ratio, Soil types, Moisture content, Compactness, The use of mattress layer.
Creative Application of Steel Cylinder Structure in Anchorage of Ultra-long Suspension Bridge
Authors: Xu Binbin , Li Yiyong 
Published: April 2020

Abstract
The damage of anchorage itself and the instability of surrounding rock around the anchorage are difficult to construct. It is very difficult to analyse and summarize the possible failure modes of the anchorage from the perspective of engineering examples because of the safety of the existing suspension bridge tunnel anchorage. The steel cylinder anchorage structure is innovatively put forward in this paper.
Study on thin plates under thermal action
Authors: Zhang WX , Yang LM 
Published: April 2020

Abstract
Under the Hamilton system, the dual form governing equations of thin plate problems are established using displacements and stresses as the basic variables, and the problem is accordingly transformed into finding the eigenvalues and eigensolutions by adopting the method of separation of variables. Furthermore, solutions for zero eigenvalues and non-zero eigenvalues are systematic studied. The study shows that zero eigensolutions are composed of all the overall deformation solutions such as the traditional tension and bending problems, while non-zero eigensolutions include the torsion and bending groups charactered by local deformations.
Study on stress concentration of elastic plates under special constraints
Authors: Zhang WX 
Published: April 2020

Abstract
The dual form differential governing equations for elastic thin plates widely used in the engineering practice are established in the state space formalism, and the complete solution space is obtained, including zero eigensolutions and nonzero eigensolutions. Moreover, the problems of the non-homogeneous lateral boundary conditions and the non-homogeneous governing equations are studied systematically. In numerical examples, we discussed stress distributions for the bending problems of thin plates, and analyzed the stress concentrations due to displacement boundary constrains using the analytical method.
Numerical Study on Rock Stability and Mechanical Characteristics of Supporting Structure of Water Tunnel with Different Buried Depths
Authors: Liu Qi , Zhi Chengjie , Li Jianhe , Ning Xinyang , Tian Zhenyu , Han Jian 
Published: April 2020

Abstract
To explore the suitability of the supporting scheme of horseshoe tunnel affected by different buried depths in phyllite rock, the 3D numerical tunnelling simulations were conducted. The plastic zone distribution, deformation characteristics and stress field of surrounding rock and mechanical characteristics of supporting structures during the excavation process were analyzed. It was shown that the plastic zone depth, volume and deformation development of the surrounding rock are greatly limited by the shotcrete-bolt support under different buried depths. Meanwhile, the restriction proportion to the development of the plastic zone and rock deformation is slightly affected by the buried depth of the tunnel. With the increase of the buried depth of the tunnel, the reasonable shortest distance that should be reserved between the constructed lining and tunnel face also gradually increases. Combined with the calculated tunnel deformation and the classification standard proposed by Hoek, it is recommended to adopt full-section shotcrete-bolt support, and add steel arch support as the necessary supplement for the existing tunnel supporting scheme. The research results contribute to design and construction guidance for tunnels under similar geological environments.
Analysis and Study on Mechanical Properties of GFRP Tubes
Authors: Du Wenqi 
Published: April 2020

Abstract
Glass fiber reinforced polymer (GFRP) is a new kind of composite material, which combines the advantages of steel bar and concrete, and has the advantages of high strength, strong corrosion resistance and anti-fatigue, etc. In recent years, it has been more and more applied in civil engineering, port, channel and coastal engineering, bridge engineering and other special structures. GFRP material can significantly improve the corrosion resistance of concrete material, and solve the problem that concrete material is prone to corrosion and lead to structure failure in complex environment. At present, the technology is developing rapidly at home and abroad, but in our country, to really apply it widely in engineering construction, we need to further study and analyze the properties of GFRP pipe - concrete composite structure. In this paper, it is concluded that with the increase of eccentricity, the bias bearing capacity of the specimen decreases gradually. With the increase of concrete strength grade, the ultimate bearing capacity is improved. The concrete grade has a great influence on the performance of the specimen. The higher the concrete strength, the stronger the bearing capacity of the structure. The bending performance of GFRP tube composite structure is good.
Damage Detection Method of Ancient Timber Structure Based on BP Neural Network and Total Wavelet Energy Rate
Authors: Hu Weibing , Yang Jia , Hou Yanfang 
Published: April 2020

Abstract
In order to detect the damage of beams and mortise joints of ancient buildings under environmental excitation, a damage identification method combining wavelet transform with improved BP neural network is proposed. The acceleration signal of the structure under the environment excitation is extracted and the total energy change rate of wavelet is obtained by wavelet discrete reconstruction, which is taken as the damage index. A finite element model of a timber frame of Xi’an bell tower is established to verify the proposed method. When the damage extent is less than 50%, 96% of the test samples in the neural network output the desired value; This method provides a theoretical basis for the study of damage prediction of timber structures in ancient buildings under environmental incentives.
Numerical investigation of ALSTON turbine generator foundations using different finite element model
Authors: Xu Li , Li Hongbo , Gao Xiaolong 
Published: April 2020

Abstract
ALSTOM turbine generators have been used in the power plant all over the world. The previous turbine generator foundations were mainly designed and analyzed by the professional design software. In this paper, FE models using frame element in the finite element software of SAP2000 and solid elements in the finite element software of ABAQUS were built to simulate the ALSTOM turbine generator foundation, respectively. Model analysis and forced vibration analysis were conducted and the simulation results were validated against the existing codes and specifications provided by manufactory. The dynamic characteristics of the turbine generator foundation could meet the requirements of the applicable codes and standards. The FE models built with solid element could better simulate the dynamic characteristics of turbine generator foundations.
Comparative In-situ Test and Numerical Simulation on Underreamed Ground Anchor
Authors: Guo Gang , Xue Zizhou , Hu Xiaochen , Zhong Guang , Liu Zhong 
Published: April 2020

Abstract
Underreamed ground anchor is an anchorage technology of safety and economy. Engineering companies worldwide developed various types of underreamed anchors with partially enlarged anchor body. In recent years, a kind of cylindrical underreamed ground anchor with geotextile bag is applied in China. Because of its corrosion resistant performance and high construction guarantee rate, the underreamed ground anchor with geotextile bag is widely recognized. In order to study its mechanical performance, a comparative in-situ test between the underreamed anchor and normal shaft anchor is held in China. Through the test, the advantages of bearing capacity and deformation performance are analyzed. Based on the test, the numerical model of cylindrical underreamed anchor is established, and the relationship between its capacity and the response of the surrounding soil is researched.
Discussion on Application of BIM Technology in Aluminum Alloy Formwork Support System
Authors: Longbo Zhang 
Published: April 2020

Abstract
With the development of science and technology, society has put forward more stringent requirements for the construction industry. The traditional two-dimensional design method can no longer meet the requirements of architectural design. The proposal of BIM technology and its application in the construction industry have solved the problems existing in traditional architectural design methods and adapted to the long-term development needs of architectural design. In the design of aluminum alloy formwork support system, BIM technology can realize efficient processing and management of massive data, realize informationization and integrated management of project design, and effectively improve the quality of project design. In view of this, the author believes that it is necessary to analyze the application of BIM technology in the design of aluminum alloy template support system. Based on the overview of this new technology, this paper will analyze and discuss the application and practical application of BIM technology in the design of aluminum alloy template support system.
Analysis on the Application of BIM and RFID in Life Cycle Management of Prefabricated Building
Authors: Wu Shuhai , Liu Qing 
Published: April 2020

Abstract
In the whole life cycle of prefabricated building construction, the application of BIM and RFID technology can solve the problems that traditional architectural design and construction methods cannot solve, by improving the precision and efficiency of architectural design and construction and guaranteeing the construction quality of buildings. In this paper, the application value of BIM and RFID technology in the whole life cycle of fabricated buildings is systematically analyzed. And this article explores the methods for participants to edit the building information model in a timely manner and the technical system for communicating and connecting information data at each stage. Finally, it provides theoretical support for the development of life cycle management of prefabricated buildings.
Research on 4D Visual BIM Technology in Dynamic Decora-tion Building Site Construction
Authors: Huang Xin-yao , Lee Kun-Fa 
Published: April 2020

Abstract
Exploring BIM 4D visualization technology applied to the dynamic construction site of residential decoration and decoration. The Project and Revit models were built by Autodest Navisworks software from different angles, and customized solutions were modified according to customer needs to meet the internal needs of today’s fashionable residential decoration.
Cooperative Path Planning Based on Pattern Genetic Algorithm
Authors: Mi WEN , Jing WEN , Qiang FANG , Yi-ming ZHANG , Zuo-wei YAO 
Published: April 2020

Abstract
In order to solve the problem of low “population” effectiveness of genetic algorithm in multi-vehicle route planning, this paper proposes a pattern-based genetic algorithm. The algorithm uses the limited way of “route pattern”, which can greatly improve the effectiveness of population generation, crossover and mutation, thus reducing the iteration times of the algorithm and improving the convergence efficiency. The pattern-based genetic algorithm is applied to the cooperative path planning of multiple aircraft. The algorithm flow of cooperative path planning is designed. An example is given to prove its effectiveness and efficiency.
Improved multi-objective sensor optimization method for structural damage identification based on genetic algorithm
Authors: Zhang Jun , Zhang Kun 
Published: April 2020

Abstract
An improved multi-objective sensor location optimization method based on genetic algorithm is proposed. According to the analytic relationship between structural response, mode shapes and damage quantities, the sensitivity matrix of structural dynamic response containing both structural modal information and damage information is firstly constructed, and then the objective function of multi-objective sensor location optimization method is established according to the minimum identification error criterion and the principle of ill- posedness in the inverse problem. In addition, a multi-objective genetic algorithm, NSGA-II, is used to solve the optimal location of measurement points. Finally, a simply supported box girder bridge is studied for validating the proposed method. Numerical simulations show that the improved optimization method based on genetic algorithm can achieve the optimization goal better, and the measurement points optimized by the improved method can get better damage identification results at the same level of measurement noise.
Prediction of compressive strength of mortar near sodium chloride by artificial neural network
Authors: Lin Yuezhong , Li Yongqian , Li Xiaomin 
Published: April 2020

Abstract
The compressive strength value of cement mortar is usually affected by the amount of sodium chloride, chemical admixture and cement grade. Therefore, the artificial neural network model is used to predict the mortar strength values of different cement grades and sodium chloride (NaCl) content. In order to predict the compressive strength of the mortar, an artificial neural network model of cement grade, different water-cement ratio, sodium chloride solution content, an output neuron and four input neurons was established. After immersion in 0%, 5%, and 10% sodium trichloride solution for 60 days, the compressive strength was measured using 12 different ratios. Artificial neural network (ANN) analysis shows that ANN as a nonlinear statistical data modeling tool can establish a strong correlation between sodium chloride content and compressive strength of cement mortar. In addition, modeling tools have a greater impact on different cement grades (42.5, 32.5 MPa).