bluuebunny/crossref_metadata_2025_split huggingface dataset:
Review of Filter and Its Performance Testing in Agricultural Efficient Water-saving Drip Irrigation System
Authors: Feng Ji , Xue Song , Liu Haisheng 
Published: May 2020

Abstract
Developing efficient water-saving irrigation technology is one of the important ways to solve the problem of water shortage in China. Rational allocation of drip irrigation filtration system is an important way to slow down the blockage of each component of drip irrigation system (such as emitters, solenoid valve, etc.). At present, many domestic and foreign manufacturers have produced many kinds of filter products, and many experts and scholars have done a lot of research on the hydraulic performance and filtration ability of the filter, but there is no comprehensive report on the filter features and its performances. Based on this, this paper comprehensively expounded the structure, performance characteristics, working principle and research progress of different types of filter, and the trends of filter research and product development were put forward in order to provide theoretical support for the wider application of drip irrigation technology and the construction of new countryside.
Walking Time Distribution of Transfer Passengers Based on Proportional Hazard Model
Authors: Zhang Zhe , Huang Zhaohong 
Published: May 2020

Abstract
Walking time distribution of Transfer Passengers is the theoretical basis for studying passengers’ transfer behaviour characteristics, for specific passengers transfer, transfer distance is the main factors affecting passengers transfer walking time. The Proportional Hazard Model (PHM) is adopted to analyse the impact of transfer distance on walking time of transfer passengers. To verify the applicability of PHM in walking time distribution, the sampling method which is characterized by fixed time, sex ratio and age proportion is created to infer transfer walking time distribution. Five transfer stations of Beijing subway are selected to conduct the numerical experiment. Through the analysis of 5 channel samples, the probabilities of passenger transfer walking time follow the logarithmic normal PHM (LNPHM). It is shown by regression analysis that there is mathematical relation among the passenger flow impact level, the average passengers’ walking time and the transfer distance.
Dam breach analysis for the Hongshiyan barrier lake
Authors: Wang Lin , Xue Yifeng , Liu Lipeng 
Published: May 2020

Abstract
This paper presents a hyperbolic erosion rate model and a calculating circular slip surface method of lateral enlargement, and obtain a numerical analysis method of the relative stability dam-breach flood analysis. This paper develops a DB-IWHR procedure based on this principle, preparing a dam breach flood procedure is simple, easy to understand and use program in Excel 2010 spreadsheet. This improves this program, and writes a flood regulation calculation program, forming a complete program of dam breach flood and flood regulation. This paper calculates Hongshiyan barrier lake breach flood flow and the reservoirs downstream impacts.
A novel approach to investigate the network of granular material using modified 3D DEM simulation
Authors: Hu Fang , Peng Hu 
Published: May 2020

Abstract
Recently it is increasingly popular to draw upon concepts and tools from the network science to help with the analysis of granular material as this method is perfectly suitable for the granular system and provides new prospective into investigating the micro-macro relationship. However, 2D simulation brings insufficient and unrealistic results while 3D simulation requires huge workloads. It is of great significance to put forward a quick and accurate method to calculate the network-related indexes of a granular material. In this study, a modified open-source discrete element code, YADE is employed to simulate a series of tri-axial compression tests on specimens composed of polydisperse-sized spheres with varying particle diameter. The contact network evolution is studied real time with satisfactory calculation speed under the help of GPU and SQL Server parallel computing. The general evolution pattern of contact network during loading is illustrated from the view of network metrics. The initial void ratio, coordination number together with the clustering coefficient and the average shortest path of the system are shown. Particles with similar size tend to form a looser packing, resulting in smaller shear force and less connectivity of the whole system. The proposed approach is strong at improving the efficiency of the calculation when investigating the contact network of the granular material.
Experimental study on the sensitive parameters of non-destructive test method for the cable based on the leakage magnetic principle
Authors: Dong Zhenhua , Fan Ping , Li Pengfei , Mao Yan 
Published: May 2020

AbstractThe nondestructive testing (NDT) technique of steel rope based on the leakage magnetic principle has been extensively applied to the cable. In view of the difference of geometric characteristics, structures, loading between steel rope and cable, the applicability of the leakage magnetic NDT and the sensitive parameters on detection accuracy should be studied. So a cable specimen with local defects was designed and fabricated, and then the leakage magnetic testing technique was applied. The experimental electrical signal output of the cable were compared and analyzed. The results show that the accuracy of the test results is strictly related to the geometric characteristics of the test instrument, the depth of internal defects, the height of sensor removal, the sensitivity coefficient of the magnetically sensitive element, the defect spacing, etc., and the qualitative evaluation and individual quantitative index of the cable defects are proposed. The above conclusions can provide data support for the test quantitative index and the application of nondestructive testing technique.
Experimental study on the effect of sustained axial tension load at early age on the tensile strength of concrete during late splitting
Authors: Zhuang Jinping , Chen Jianxing , Cai Xuefeng , Qiu Hao 
Published: May 2020

Abstract
In order to study the effect of early-stage concrete loading on the tensile strength of the later splitting, a total of 7 series of specimens were designed. Through the sustained tension in early age, the effects of preloading axial tension ratio,loaded time and concrete strength on the tensile strength of concrete during splitting were discussed. A set of sustained tension device was set up by which six concrete specimens could be applied continuous pulling force together. The test results show that the sustained tension at early age has an adverse effect on the tensile strength of the late splitting. The reduction range is between 10.4% and 18.3% in the experimental parameters.
Risk assessment of safety accidents in small and medium gyms
Authors: Yin Mingyue , Li Ziqing , Dila A 
Published: May 2020

Abstract
A risk assessment model for safety accidents in small and medium-sized gymnasiums is constructed by performing risk assessments on the characteristics of the events held in small and medium-sized gymnasiums, the risks of safety accidents, and the offset of accident risks. The risk index evaluation method is used to clarify the risk of security accidents in small and medium-sized gyms and the nature of the events, the scale of the events, the types of venues, the event cycle, the circulation of people, the types of people, fire risks, crowds of people, space, safe evacuation, event management and Correlation calculation method of 12 evaluation indicators for emergency management and control. According to this, the risk of safety accidents in small and medium-sized gymnasiums is classified, and the feasibility and rationality are verified.
Study on bond mechanics of antifloating anchor in red sandstone
Authors: Li Ming , Ma Pengjie , Rao Zongrun , Chen Zhuoqun 
Published: May 2020

Abstract
In order to study the mechanical properties of anti-floating anchor rod in medium-strong weathered red sandstone and its application in engineering examples, this paper takes the virtual university town project of Hengyang High-tech Zone of Hunan Province as the engineering background. This paper had done destructive test of anti-floating anchor rod. The effects of different parameters on the adhesion of anti-floating anchor rod were studied by test and from three aspects: drilling depth of anti-floating anchor rod,highly and intermediary weathered sandstone. At the same time, the adhesion of anti-floating anchor rod in the same type of rock but with different drilling depths is compared and analyzed. The results show that under the condition of the same drilling depth, the adhesion of anti-floating anchor rod of different lithology is different, and under the condition of the same type of rock formation, the adhesion of anti-floating anchor rod of different drilling depth is not the same. The recommended bearing capacity characteristic value of the weathering layer is 1500 KPA, which can be used as the foundation bearing layer of the proposed building.
Experimental Study on Failure Mechanism of Hierarchical Corrugated Structures with Second-order Core
Authors: Chen Zhenfu , Luo Yaoge , Fang Yaochu 
Published: May 2020

Abstract
Based on the sample experiment and ANSYS simulation, the experimental verification of the failure mode prediction model under compression load is completed, and the experimental results are compared with the theoretical analysis results. Among them, the sample experiment is carried out on the universal testing machine, including base metal experiment and uniaxial compression experiment. The experimental model is made of UV Curable Resin by 3D printing technology. And the buckling mode numerical simulation is completed on the ANSYS Workbench, using the plate and shell model of the pumping surface. By comparing the failure mode and yield stress of theory, experiment and simulation, the results show that the accuracy of the prediction model based on plate theory is higher. It can provide theoretical reference for structural design.
Design of Examination Management System for Engineering Management
Authors: Cai Hualong , Yao Yong , Cai Jingwen 
Published: May 2020

Abstract
Through the analysis of the engineering management training system, we know that the courses in the system can be divided into theoretical, practical and experimental courses. We aims to develop an examination management system by restructuring the evaluation process of the three types of courses. And the organizational structure, hardware architecture, and software architecture of the test management system are designed to be applied in the entire process of system development, operation and maintenance. Besides, under the influence of “the pneumonia caused by novel coronavirus, COVID-19” on education, we wish that the examination management system is more suitable for the needs of the macro environment, and the results can be used to the training and evaluation of other professionals.
Study on response characteristics of red clay slope under evaporation rainfall condition
Authors: Chen Kaisheng , Luo Dipu 
Published: May 2020

Abstract
Evaporation rainfall is one of the main causes of slope failure. Red clay belongs to special soil, and the failure mode of the slope is different from that of the general soil slope. In this paper, based on the theory of similarity simulation, a test model of red clay slope similar to the prototype is established in a certain proportion. Sensors are embedded in different positions of the slope to carry out the change rule of physical and mechanical indexes of the red clay slope under the condition of evaporation and rainfall. The results show that the water content of the slope increases during the rainfall period, the surface water content of the slope is obviously affected by the rainfall intensity, and the water content of the slope decreases in the drying period. Under the action of evaporation and rainfall, the internal temperature of slope is stable, and the surface temperature changes significantly. The pore water pressure of the top, shoulder and slope changes little with the times of evaporation and rainfall, and the pore water pressure at the foot of slope is obviously affected by evaporation and rainfall. Evaporation rainfall causes obvious horizontal displacement of red clay slope. The earth pressure increases in the rainfall period and decreases in the static and dry periods. With the increase of evaporation rainfall times, the earth pressure increases gradually.
Dynamic compression behavior of waste glass powder concrete at high strain rate
Authors: Zeng Zeqiang , Gan Yuanchu , Ma Yuang , Lei Qing , He Bin 
Published: May 2020

Abstract
In order to study the dynamic compression performance of waste glass powder concrete (WGPC) under high strain rate, the experiment uses the split Hopkinson pressure bar (SHPB) device with 4 increasing strain rates to test the plain concrete and WGPC block with 10% waste glass powder, the dynamic compressive strength, peak strain, stress-strain curve and other characteristics are obtained through this experiment, and the variation rules of these characteristics with the strain rate and the amount of waste glass powder are analyzed. The results show that with the increase of strain rate, the dynamic compressive strength of WGPC has significant strain rate effect; In the multi-group test, the dynamic compressive strength of WGPC reached a maximum of 58.45 MPa, compared with static compressive strength, the increase is 166%, which is close to the strength of plain concrete, indicating that the waste glass powder in concrete is a good substitute for cement under high strain rate.
Seismic performance analysis on GFRP reinforced concrete frame structure
Authors: Liu Fangzhou , Xu Xinsheng 
Published: May 2020

Abstract
At present, the research on FRP-reinforced concrete structures mainly focused on the performance of members at home and abroad, and there is less research on the overall seismic behavior of FRP-reinforced concrete frame structures. Based on the existing related research and the shaking table test, this paper studies the overall seismic performance of GFRP reinforced concrete frames. We excited the structure by inputting seismic waves through the computer, to make the frame model go through seven-degree multiple encounters earthquake damage, seven-degree fortifications earthquake damage, seven-degree rare encounters earthquake damage, eight-degree rare earthquake damage in turn, and recorded the acceleration and displacement responses of the structure. Acceleration data was analyzed by MATLAB software. And then used these data to analyze the seismic performance of the structure.
Study on Bending-Shearing Separation Force of Reinforced Tenon Precast Shear Wall Joints
Authors: Wang Shilin , Wu Qing , Chen Wei 
Published: May 2020

Abstract
A new type of large-size reinforced tenon precast shear wall was proposed, which can effectively reduce the pin-key shear stress of the longitudinal connecting steel bars and improve the seismic performance of the precast shear wall. In order to study the bending-shear separation mechanism of the wall edge restraint member and the reinforcement-slotted shear, this paper first proposes the bending-shear separation mechanism of the wall edge restraint member. The concept of bending-shear separation degree was introduced, the mechanical analysis model of reinforced tenon was established, and the calculation method of horizontal relative slip of reinforced tenon interface was obtained by using Rayleigh-Ritz variational method. The relationship between horizontal relative slip of interface and shear stress of steel pin key was established, and the size of large-sized reinforced tenon to interface was studied.
The Analysis and Research on Durability of Super-high Strength Concrete Poles
Authors: Guo Ji-Yuan , Gao Fan , Yu Ren , Ren Ya-Ning , Ma Cong 
Published: May 2020

Abstract
Compared to ordinary concrete, super high strength concrete has the characteristics of high strength and excellent durability. But it has higher requirements for materials and conditions for maintenance, as a result, its application in actual engineering is less. Based on actual project, this paper analyzed and summarized its durability, including compressive strength, frost resistance, carbonation resistance, anti-chloride ion permeability and water resistance, so as to provide a reference for the research and development of super-high performance concrete poles.
Exploration on Control of Engineering Safety Supervision in the Framework of Fuzzy Mathematics
Authors: Li Weifeng 
Published: May 2020

Abstract
Carrying out effective safety supervision and control during the construction process of a construction project can greatly guarantee the construction safety of the construction project, and at the same time can improve the quality of the construction project, which is an important part of the construction process. There are still some problems in the current safety supervision of construction projects, which affect the efficiency of safety supervision. This requires analysis of the main points of safety supervision and control work, and promoting the effective application of safety supervision in the construction process of construction, so as to promote the long-term stable development of China’s construction engineering industry.
Application of Steel Sheet Pile in Deep Foundation Pit Support of Collapsible Loess Regions
Authors: Yang Yang , Liu Wanfeng , Hu Aiping , Li Fei , Yang Zhaoqian 
Published: May 2020

Abstract
Due to its high quality, simple construction, good durability and interchangeability, steel sheet pile can reduce the requirements of space for construction tasks and other advantages. In recent years, it has been widely used in support engineering. Taking a deep foundation pit in a collapsible loess area as an example, this paper analyzes the application and calculation of steel sheet pile support under the complex operation conditions, which is composed of many adverse factors such as the limitation of the construction work area’s narrow influence on the construction, and expounds the feasibility of steel sheet pile in the deep foundation pit support in collapsible loess area, which adds precious steel sheet pile support to the deep foundation pit in collapsible loess area The experience has a good reference and guiding significance for the use and promotion of steel sheet pile support in similar projects.
Study on the Design of the Upper Space Parking Lot of Urban Multi-layer Tunnels
Authors: Li Jian 
Published: May 2020

AbstractIn recent years, with the continuous acceleration of the urbanization process, underground parking lots have developed rapidly, and they are continuously moving towards intelligence. Based on the multi-layer tunnel section of the Xiamen Haicang Subsea Tunnel, this paper conducts theoretical research on the liquid analysis of the surrounding area of the tunnel area, the graphic design of the parking lot, the architectural design, the function, and the fire prevention design. The research results are of great significance to the rational use of urban underground space, increase the utilization rate of underground parking lots and ease parking difficulties.
Investigation and Analysis of Existing Housing Deterioration in Jinan
Authors: Wang Xiao , Li Bing , Zhang Xiwen 
Published: May 2020

Abstract
This article takes existing houses in Jinan as a research object, focuses on the outer walls of the houses, and conducts field surveys and collections of the existing housing deterioration phenomena. Based on a large amount of survey data, the existing housing deterioration phenomena and the distribution characteristics are analyzed, and combined with the research of previous literature, the reasons for the deterioration phenomenon were discussed from the four aspects of design and construction, construction quality, materials selection, and maintenance.
Whether the degree of industrial agglomeration affects the discharge of industrial pollution in China
Authors: Liang Yinuo , Ding Jiaqi , Kang Xiaotong 
Published: May 2020

Abstract
This paper discusses the influence of industrial agglomeration on industrial pollution emission in China. Based on the data of several industrial sectors in China from 2005 to 2015, the panel model is adopted for empirical analysis. Industrial agglomeration significantly affects the discharge of industrial waste water, so2 and industrial dust, and the effects are all positively correlated. This shows that in the process of industrial development, enterprises’ geographic spatial aggregation will increase industrial pollution emissions to a certain extent, which is not conducive to easing the contradiction between industrial development and ecological environment.
River Classification in Line with China’s New Requirements of Water Resources Management
Authors: Huang Huojian , Yuan Yong , Xing Ziqiang , Wang Ding 
Published: May 2020

Abstract
River classification facilitates efficient management of rivers. Due to the complexity and variety of river morphology in China, classification of Chinese rivers has never developed maturely. The current river classification system used in China becomes even less qualified for new management requirements aiming to environmental protection and restoration as a response to the worsening environmental conditions represented by the deterioration of river functions and the scarcity of water resources, which have been greatly exacerbated by the impressive growth of Chinese economy. Moreover, some well-known classification methods discussed internationally cannot adapt to Chinese specific conditions appropriately, although they have been developed beyond the Chinese ones. This thus highlights the necessity to establish an updated classification system that is adequate for the emerging river management requirements of China. In these circumstances, this paper summarizes the currently representative river classification methods and proposes a pathway to improve river classification methodology for China.
Risk Assessment of Debris Flow in Ya’an City Based on BP Neural Network
Authors: Liu Xiaoyu , Shu Xiaolong , Liu Xing , Duan Zhe , Ran Zhiyi 
Published: May 2020

Abstract
Since the occurrence of debris flow hazards is related to many factors, this paper selects five evaluation indicators: rainfall, lithology level, slope gradient, undulation degree and distance from faultages based on the three scopes of geomorphology, meteorology and geology. In this paper, the data extracted from the occurrence point of historical debris flow disaster is used, and BP neural network is used for training, then the weights of evaluation indicators are obtained. Finally, the GIS software is used to superimpose and analyze these indicators, and the risk of debris flow in Ya’an city is divided into five levels, thus the danger distribution map of debris flow in Ya’an city is obtained. And the map is compared with historical debris flow disaster occurrence points, the results show that, three districts of Tiancheng County, Lushan County and Baoxing County have the highest overall risk; the overall risk of Yingjing County, Yucheng District and Shimian County is high; and the overall risk of Hanyuan County and Mingshan District is relatively low. The evaluation results reflect the actual situation of the spatial distribution of debris flow in Ya’an city, which can provide a scientific basis for the development of reasonable flood control and disaster against planning in Ya’an city.