bluuebunny/crossref_metadata_2025_split huggingface dataset:
Aerodynamic Load Analysis of Parts of Pantograph under Strong CrossWind
Authors: Zhao Meng , Liu Meiying , Liu Xiaoyu , Jia Yan 
Published: September 2019

Abstract
The pantograph-contact net model is established, and based on the N-S equation of the pressure correction procedure, the SIMPLE algorithm is used to solve the aerodynamic characteristics of different components of the pantograph under strong crosswind conditions. The effects of different crosswind speeds and different deflection angles on the aerodynamic load law of the pantograph components are discussed. Results show that among the various components of the pantograph, the aerodynamic drag and lift of the skateboard are the largest, and the lateral force of the lower arm and the bottom frame is also the largest. The pitching moment of the upper frame is the largest, and the overturning moment and the lateral moment of the sliding plate, the lower arm and the underframe are larger than before, which needs to be taken into consideration when we do calculations and optimizations. The research results can provide a basis for the operational safety and optimal design of high-speed pantograph under strong crosswind conditions.
Research and implementation of FOD detector for airport runway
Authors: Zhongda Yuan , Mingguang Liu , Xiuquan Cheng 
Published: September 2019

Abstract
A foreign object on an airport runway is also called a foreign object, that is, some foreign material, debris or object that may cause damage to the aircraft, such as scattered aircraft parts, luggage parts, wildlife, etc. On airport runway, there are mainly the activities of aircraft, less activities of human. As a result, most of the foreign objects on runway are parts that fall off the aircraft, mostly made of metal. Due to the strong suction of aircraft engines and high speed crushing of tires during take-off and landing, aircraft is relatively fragile compared with foreign bodies, and the presence of foreign bodies on the runway can cause serious damage to the structure of aircraft. A tiny object sucked into the engine could cause damage to the blades, and debris could accumulate in the machinery, affecting the plane’s normal operation. In view of the above problems, the research and realization of the FOD detector of airport runway are carried out in depth.
Assessing Public Satisfaction of Freeway Closure Measures in Fog and Haze Weather: A Questionnaire-Based Study in Hubei Province, China
Authors: Tan Jinhua , Qin Xuqian , Gong Li 
Published: September 2019

Abstract
In the current work, freeway closure measures in fog and haze weather are studied from the perspective of public satisfaction, in order to improve traffic management in Hubei province, China. Through an Internet survey to collect data, a structural equation model of public satisfaction of freeway closure measures in fog and haze weather is developed with public expectations, perceived quality, perceived value, public satisfaction, public complaints, support and understanding as variables. The results show that public’s supporting degree is not very high on the freeway closure measures. However, freeway intermittent release measures are the acceptable measures in fog and haze weather, which not only ensure traffic safety but also reduce economic losses and guarantee sustainable operation of freeway. Even though freeway closure measures are frequently taken due to serious fog and haze weather, intermittent release measures should also be taken into consideration so as to enhance public satisfaction and strengthen adaptive capacity of freeway to adverse weather.
Pile Active Underpinning of Existing Building Foundation with Undercrossing Shield Construction
Authors: Ma Hailong , Zhang Lixin , Ma Yufei , Yang Bilian , Yao Wenhong 
Published: September 2019

Abstract
Undercrossing shield construction of a subway, the tunnel vault is about 3.0m away from the foundation pile tip of the existing building. In order to analyze the influence of shield undercrossing construction on the existing building and the influence of the existing building load on the tunnel structure, the calculation and analysis are carried out for the existing foundation forms, foundation reinforcement into raft, addition of equal length piles and increase of unequal length piles. Using the method of foundation reinforcement into raft foundation and long pile tip exceeding 0.5m below the tunnel floor can transmit the load of the upper building structure to the soil layer below the tunnel floor and reduce the load of the tunnel roof, thereby achieving the underpinning effect. According to the allowable deformation value of existing building, allowable internal force of segment and allowable deformation value of segment, using this underpinning method can meet the requirements of the various of allowable values of existing building, tunnels, etc.
Finite Element Analysis of Bearing Capacity on the Composite Foundation of Group Pile
Authors: Teng Quan , Yao Xianhua , Li Shuguang , Guan Junfeng 
Published: September 2019

Abstract
In order to study the bearing characteristics on the composite foundation of group pile, the influences of variation of pile length, elastic modulus, spacing and cushion thickness on the bearing capacity for the composite foundation of group pile were investigated by finite element method. This paper presented the laws of the displacement and additional stress of pile with different parameters. The results showed that pile length, elastic modulus and spacing had great influence on the composite foundation of group pile; however, cushion thickness had less effective. Finally, this paper gave the optimal parameters, which provide a reference for practical engineering applications.
PFC model parameter calibration using uniform experimental design and a deep learning network
Authors: Zhai Shijie , Zhan Jiewei , Ba Yiding , Chen Jianping , Li Yuchao , Li Zhihai 
Published: September 2019

Abstract
A macroscopic parameter calibration method for the particle flow code (PFC) using a uniform experimental design and deep learning network is proposed to explore the relationship between the micro parameters and macro response of rocks. First, a sensitivity analysis was used to identify which micro parameters influence the macro factors. A uniform experimental design was applied to achieve this goal in this study. Then, a neural network based on batch normalization was constructed. Through a large number of numerical simulation tests, the relationship between the input (micro parameters) and output (macro response) can be obtained by deep neural network (DNN). Finally, the DNN model was used to perform validation by using marble in Jinping. The average error for the best results was only 4.211%. The main advantage of this method is that it can achieve fast parameter calibration compared with traditional calibration methods, and the calibration results can be obtained in only a few seconds through the designed program.
Field Test and Inspection of Large Area Hydraulic Sand Ground Improved by Vibro-compaction
Authors: De-yong Wang , Sheng Chen , Xiao-cong Liang 
Published: September 2019

Abstract
Liquefied Natural Gas (LNG) storage tanks have high requirements for the bearing capacity, settlement, resistance to liquefaction, and compactness of foundation. An LNG site about 500,000 m2 in the Middle East was hydraulic filled by trailing suction hopper dredger and cutter suction dredger, and it was improved by vibro-compaction. A filed test was carried out to optimize the key process parameters and inspection scheme. Field inspection methods included standard penetration test (SPT), cone penetration test (CPT), and zone load test (ZLT). The test results showed that the comprehensive inspection could be effectively inspected by CPT and SPT, the deformation modulus were back-calculated by ZLT and therefore the long-term settlement could be accurately predicted. The research can provide reference for the design, inspection and optimization of large area ground improved by vibro-compaction.
Research of the transfer relationship of the plastic region of the curved bridge based on the auxiliary system method
Authors: Yang Fan , Feng Tao , Wang Yanan , Jiao Xiwang , Xie Yan 
Published: September 2019

Abstract
Based on the member bars of one end fixed and one end free, it is a new method to study the relationship between the two ends of the curved beam by using the principle of virtual work and the balance equation. By analyzing the plastic hinge and the plastic region model of the curved beam, the transfer relation of the plastic hinge and the plastic region model is deduced by using the transfer matrix method of auxiliary system. Compared with the traditional initial parameter method, the transfer matrix method is more accurate and the calculation program is simpler. The results show that the transfer matrix method is correct and effective, and it can simulate the failure process of elastoplastic better and can be used for the initial design and final check-up of the curved bridge structures.
Application of Digital Optimum Design Technology in Mining Design of A Large Gold Mine in Ethiopia
Authors: Hong-gang Ren , Zheng Wei 
Published: September 2019

Abstract
In the decision-making process of mine project research, mining mode, mining method and production scale are the three core contents, which determine the investment and economic benefits of mine project. Based on the study of mining conditions, this paper establishes a digital three-dimensional geological model. By means of qualitative analysis, software optimization, man-machine interaction and multi-scheme comparison, the open-pit mining mode and mining boundary are determined, and the mining production scale is optimized. These methods take into account the influence factors of technology, economy and security, and provide reliable basis and technical guidance for project decision analysis.
Influence of suction chamber profile on flow field of annular jet pump
Authors: Wang X D , Chen Y L , Zhao Y , Xu Y , Wang B 
Published: September 2019

Abstract
Jet pump is a kind of fluid machinery, which uses jet shear and turbulent diffusion to transfer mass and energy. It is widely used in water project, civil engineering and other fields. In order to investigate the influence of suction chamber profile on flow field of annular jet pump, the conical suction chamber and the streamlined suction chamber were compared by applying turbulence numerical simulation method. The performance, pressure characteristics, velocity and turbulent energy distributions of annular jet pumps with two suction chambers are analysed. The calculation shows that compared with the traditional conical suction chamber, the efficiency of annular jet pump with streamlined suction chamber is improved at low flow ratio, and the change is not obvious at high flow ratio. In the same section, the cross sectional area of streamlined suction chamber is slightly larger than that of conical suction chamber, so the primary flow velocity near the wall is slightly lower, which can reduce the friction loss caused by high speed wall-attached flow. In addition, the smooth turning of the primary flow in streamlined suction chamber can weaken the extrusion on the entrained flow field. Different from the conical suction chamber, the streamlined suction chamber is smoothly connected with throat without sudden corner change, which can eliminate the low pressure near the inlet wall of throat, improve the wall pressure distribution and reduce the possible cavitation. The research results of suction chamber profile of annular jet pump can provide scientific basis for the popularization and application of jet pump.
A Multi-Objective Optimization Algorithm for Truss Structures
Authors: Jing Li , Zhuo-qun Zhang 
Published: September 2019

Abstract
For the optimization of multi-objective discrete variable structure optimization in civil engineering, a new improved multi-objective ant colony optimization algorithm for truss structures has been proposed in this paper. The new improved algorithm established two sets, including sets of feasible solutions and non-feasible solutions, and “the repeated solutions” was replaced with “the special solutions” to acquire the Pareto optimal front-end of the multi-objective problems. This algorithm can not only make the multi-objective ant colony algorithm better solve multi-objective problems under discrete variables, but also realize the successful application of multi-objective ant colony algorithm in truss structure. The present paper proposes a new improved multi-objective ant colony optimization algorithm for truss structures, which can provide a good performance in program design, arithmetic speed and generality of the proposed method. It is also a simple and practical, and suitable for projects in the future.
Railway route selection based on entropy weight method-gray correlation improvement TOPSIS
Authors: Zhou Ying , Liu Xixiao , Li Feng , Jiang Wen 
Published: September 2019

Abstract
In order to reasonably select the best railway route design scheme, the paper research the comprehensive evaluation model of TOPSIS based on entropy weight method-gray correlation. The paper establish the comprehensive evaluation index system from four aspects: technology, economy, society and environment. Then set up railway route selection model of gray correlation improvement TOPSISI, and use entropy weight method to determine the weight coefficient of each index. Finally, take the rail connection project as the example for verification. Making comparison of three alternative route design by using this model, respectively obtain the three scheme relative proximity are 0.575/0.543/0.551. The relative proximity of scheme 1 is the largest (0.575), which is the optimal design scheme, and it is consisted with the actual connection scheme. The paper use this model for railway route selection can make full use of objective data information and reduce the influence of subjective factors.
Application of Fuzzy Analytic Hierarchy Process in The Optimization of Railway Schemes
Authors: Yin Zihan , pu linqing , Luo Ruchang , Zhou Ying 
Published: September 2019

Abstract
The rapid development of economy is inseparable from the continuous construction of railways. Railway selection as the most important link in project construction must meet the requirements of national politics, economy and national defense. In this paper, the fuzzy analytic hierarchy process is used to take The Xuyong-Bijie Railway as an example to establish an evaluation system and calculate the evaluation grades of each index. The application of this method in the optimization of railway scheme can provide reference for actual route decision, and also verify the applicability and superiority of fuzzy analytic hierarchy process in railway line selection.
Exploration of Weihe River Fault at the Site of Weihe Bridge on National Highway 310 Xi’an Transit Highway
Authors: Lin Zhuo , Shu Youliang , Bian Jumei , Li Chunfeng 
Published: September 2019

Abstract
In this paper, the Weihe fault on the site of Weihe Bridge on State Highway 310 Xi’an Transit Highway is explored by combining high-density resistivity method with borehole geological section. The specific location of Weihe fault on the site of Weihe Bridge is determined, which provides a basis for seismic fortification and potential seismic source zoning of Weihe Bridge on State Highway 310 Xi’an Transit Highway.
Research on key technology of construction of long span continuous beam of high speed railway
Authors: Zhang Zhe , Yang Qijian 
Published: September 2019

Abstract
After entering the new era, China’s railway transportation industry has developed rapidly, and many high-speed railway projects have been emerging. Compared with ordinary railways, the trains on the high-speed railway have higher running speed, which need higher requirements on the rigidity of the bridge. In response to this situation, long-span continuous beam construction techniques are widely used in high-speed railway projects. Based on engineering cases, this paper analyzes the key technology for high-speed railway long-span continuous beam construction.
Deformation Characteristics of Deep Excavation for an Interchange Station Based on the Model of Hardening Soil
Authors: Wang Xiang-qiu , ZHEN Tu-yong , Liao Zhen-yuan 
Published: September 2019

Abstract
The interchange station of Foshan Metro Line 1 and Line 3 was regarded as the research object, and a three-dimensional finite element model was conducted by the software of Midas GTS to simulate the excavation of the metro station based on the constitutive model of hardening soil. The FEM results show that the diaphragm wall presents two deformation forms those are the kicking at the bottom of the wall and rigid translation into the pit. Comparing the numerical calculation and monitoring results of horizontal displacement of representative monitoring points of diaphragm wall under different excavation conditions, it is proved that the numerical results which based on the model of hardening soil is practicable in Pearl River Delta.
Review of study on post-earthquake stability of soil slopes
Authors: Chen Jinchang , Wang Lanmin , Pu Xiaowu 
Published: September 2019

Abstract
Under the action of earthquake, the slope will be damaged to varying degrees and the stability will be decreased. The stability of these slopes will be further reduced under the action of succedent rainfall and strong aftershocks, which will evolve into landslides. In addition, the damaged slope, even without the influence of external factors, may slip in a period of time after the earthquake, called progressive landslide or delayed landslide. The losses and casualties caused by the above landslides are often more serious than the coseismic landslides. This paper summarized the research results of post-earthquake stability of soil slopes at domestic and abroad. From the aspects of the damage characteristics, the evolve process of instability and the stability evaluation methods of soil slope, three types of landslides which are progressive landslide, post-rainfall and strong aftershocks induced landslide are analysed. The problems existing in the research and the direction of future research are also been discussed, which can provide some reference for related research work.
Seismic input model of high slope and its test verification
Authors: Zhang Boyan , Li Deyu , Li Chunlei 
Published: September 2019

Abstract
The Seismic input model of high slope is proposed, in which the Lagrangian discontinuous deformation analysis (LDDA) is adopted to simulate faults, cracks and structural surfaces, and the viscoelastic boundary is used as the energy absorbing boundary to reflect the influence of infinite foundation radiation damping. Due to employing the wave analysis method, the propagation and amplification effect of seismic waves in the slope can also be included. In order to verify the rationality of this calculated model, a slope dynamic model test of a large earthquake simulation shaking table was also carried out. From the results of experiment and numerical calculation, it can be seen that the acceleration of seismic response and its amplification effect, the slope base frequency and the opening degree of the simulated faults are comparable. The calculation model presented in this paper provides a good tool for correctly evaluating the seismic stability of the high slope near dam.
Static and Dynamic Stability Analysis of the Gravity Anchorage Slope Using the Three Dimensional Finite Element Method
Authors: Dan Luzhao , Tian Ming , Du Wenjie , Du Yuxiang , Fu Xiaodong 
Published: September 2019

Abstract
Stability evaluation of the high and steep slope formed by foundation excavation of a gravity anchorage is a key problem in safe construction and operation of the suspension bridge. Taking the gravity anchorage slope of Taoyuan Jinsha River Suspension Bridge of Dayong Expressway in Yunnan Province as a case study, through the field investigation and geological borehole data, a three dimensional finite element model was established to evaluate the stability of the anchorage foundation slope under the excavation and earthquake actions. The reinforcement effect of the support system including the anti-slide piles, bolts, pre-stressed anchor cable and lattice beam was studied. Using the support system, the maximum displacement of the slope decreased by 41%, and development of the plastic zone of the slope was controlled during the earthquake. The research results are used in the construction and design of this project, and also can be used for reference by the similar projects.
Study on Stability Theoretical of Bank Slope under Coupled Conditions
Authors: Wang Chang hong 
Published: September 2019

Abstract
In view of the factors affecting the soil bank slope of inland waterway and its analysis characteristics, the method of stability analysis of soil bank slope in inland waterway are put forward in the paper. On the basis of that, the soil slope under the influence of water level change, rainfall and ship traveling wave are analyzed, and the stability of the ecological slope after planting is analyzed. In order to consider the soil slope with multi factors, the finite element method should be adopted in the analysis of the stability of the soil bank slope under the combined action of many factors.
Study on the Three Gorges reservoir flood control operation chart considering comprehensive utilization requirements
Authors: Liu Xinyuan , Qu Geng , Guo Xiaohu , Yue Hongyan 
Published: September 2019

Abstract
This paper constructs a multi-objective flood forecasting optimization operation model based on inflow forecasting information considering flood control, power generation, and navigation. The optimization-simulation-test algorithm and modified differential evolution for multi-objective optimization (DEMO) were used. Some non-dominated solutions were derived from optimization of the inflow data of 126 years (1882-2007) and test by 1000-year design floods. The solutions were distributed uniformly and the algorithm was efficient. The flood during August 2009 was also used to test the selected solution. The results show that the optimal schemes can generate extra hydropower energy, and save great flood water resources. The navigation days for all types of ships are also increased greatly. To maximize comprehensive utilization benefits on the premise of flood control safety, the traditional design flood routing method is well combined with the optimization method by reservoir operation chart for flood control based on inflow forecasting, which provides a new way for reservoir flood control operation by considering the comprehensive utilization benefits.