bluuebunny/crossref_metadata_2025_split huggingface dataset:
Dynamic Simulation Research on Operation Safety of Main Canal of South-to-North Water Transfer Based on Risk Input
Authors: Wang Fang , Zhou Ning , He Yongjun , Li Hongen 
Published: February 2021

Abstract
The South-to-North Water Diversion Project will pose a great threat to the lives and property safety of people along the route once a dangerous situation occurs. Therefore, this paper analyzes the historical risk data of the South-to-North Water Transfer Project to identify risk sources, combs the actual risk occurrence process with the basic structure of "Risk Factor→Destruction Link→Destruction Mode", and builds a main canal system risk interpretation model. At the same time, taking the typical high-fill section of the main canal of the South-to-North Water Transfer Project as an example, a typical failure evolution process is selected to construct a dynamic simulation model based on system dynamics to simulate the failure process of the canal embankment under three kinds of manual intervention, as the channel operation under risk input scheduling decisions provides new ideas.
Research on the Recycle of Different Materials from Demolition Waste
Authors: Chengdu CHEN 
Published: February 2021

Abstract
Nowadays, with the reduction of energy sources and deterioration of the natural environment, people pay more and more attention to infrastructure sustainability. It is because a large part of the pollution comes from the construction industry. There are lots of construction and demolition (C&D) waste produced every year. This paper analyzes the recycle of aggregates, asphalt, plastic, glass, ferrous metal, and wood and discusses and compares the future of recycling these materials.
A Two-Step Damage Identification Based on Cross-Model Modal Strain Energy and Simultaneous Optimization
Authors: Fan Qin 
Published: February 2021

AbstractAiming at the problem of the effect on damage identification caused by noise and modal incompleteness, a two-stage damage identification method based on cross-model modal strain energy and simultaneous optimization was proposed. This paper proposed an improved damage index (Modified Index of Cross-model Modal Strain Energy, MICMSE) based on cross-model modal strain energy. This method first locates the damaged elements by MICMSE, and introduces simultaneous optimization to quantify the damage ratios of damaged elements. The two-step method avoids the calculation of the sensitivity of the modal parameters and the reanalysis of the characteristic equation, speeds up the convergence speed, and guarantees the recognition accuracy. The results of the numerical example show that the method proposed in this paper can effectively locate the damage elements and identify the damage ratios under different damage cases and noise levels.
Analysis on Seepage Flow and Dam Stability of Ecological Permeable Dam
Authors: Ma Xiaotang , Jiang Linlin , Zhao Chuan 
Published: February 2021

Abstract
In this paper, the Geo-studio finite element analysis software is used to establish a variety of dam models to analyze the seepage of permeable dam and the slope stability, the results of seepage data are compared by hydraulic physical model experiment. The results show that the single width seepage flow of the permeable dam is 0.0017398m2/s, which meets the design permeability; the XY rate of seepage of the dam meets the law of permeability coefficient mutation. The minimum safety factor is 1.0388, the most likely slip surface appears in the middle and lower part of the dam body facing the water surface, and the leakage point is above the reservoir in the dam, reinforce this area in advance to prevent seepage damage; the simulation process also showed that dams with similar permeability coefficients are safer and more reliable. These research results have certain reference value for the design and research of permeable dams in the future.
Research on Construction Sequence and Line Network Structure of Urban Rail Transit
Authors: Jinghui Liu , Qiuping Wang 
Published: February 2021

Abstract
With the construction of urban subway lines, the network characteristics of subways have begun to appear. Under certain objective conditions such as capital, manpower, and material resources, the construction sequence of subway lines ought to be different, so that priority construction of lines can maximize network benefits. In order to study the time sequence of urban subway line construction and the network effect of the line, the evaluation index of urban rail transit construction time sequence based on the complex network theory is constructed. The catastrophe progression theory is applied to avoid the subjectivity of the weighting of the primary indicators. The existing lines of Xi’an Metro are transformed into the L-space topology, and the relevant network indicators are calculated to judge the network characteristics of the subway. Through the calculation of the membership degree, the construction priority of each line is finally determined. The route planned for the third phase of the Xi’an Metro is taken as an example, the calculation results show that the small-world characteristics of the Xi’an Metro network are emerging and the network is in its infancy. The calculation results of the priority of the planned line construction sequence indicate that large-scale sports meeting and events have a decisive influence on the construction sequence of the subway line.
Comparative analysis of accuracy and efficiency of different contact algorithms
Authors: Zhang Hong , Xue Binghan , Fang Hongyuan , Chen Jianguo , Yu Xiang , Du Mingrui 
Published: February 2021

Abstract
In order to solve contact problems, ANSYS provides a variety of contact algorithms. However, there is no basis for how to select the contact algorithm when solving the contact problem in hydraulic structure engineering. Therefore, this paper introduces the basic concepts of contact algorithms briefly, such as penalty method, lagrange method, augmented lagrange method and L&P method, which are commonly used in ANSYS. Then, different examples are used to compare the four contact algorithms in terms of accuracy, convergence and efficiency. Finally, considering the accuracy, convergence and efficiency, it is suggested to adopt L&P method in hydraulic structure contact analysis.
Study on Stability of Surrounding Rock of Mechanized Construction in Tunnel Entrance Section
Authors: Guo Hongyan , Chen Shuang , Zhu Guanyu , Li Ke 
Published: February 2021

Abstract
With the development of tunnel construction technology and mechanical equipment, the mechanized drilling and blasting construction of mountain tunnels has gradually developed, but there are still certain problems in the mechanized tunnel entry. Relying on a tunnel project in Yunnan, this article uses FLAC3D software to study the stability of surrounding rock under the condition of mechanized large-section construction of shallow buried section of the tunnel entrance. When the shallow buried section of the cave entrance is constructed by the micro-step method, the surrounding rock displacement and plastic zone changes of the surrounding rock before and after the use of different cyclic footage and the tunnel face reinforcement when the tunnel face is used are compared and analyzed. The results of the study show that when the tunnel face is not reinforced, in order to ensure the safety of construction, the mechanized excavation cycle footage of the tunnel entrance section should be controlled within 1.2m, and the overlap length of the leading pipe shed should be greater than 5m; if the circulation is to be increased for footage, the tunnel face must be reinforced. Under the condition that the tunnel face is reinforced with glass fiber anchors with a length of 10m and a pitch of 1.5m, the cycle footage can be increased to 1.8m at most.
Advances in the identification of reservoir-induced earthquakes
Authors: Di Liu , Bo Jin , Shiliang Zhang 
Published: February 2021

AbstractDue to the construction of large hydropower stations and the impoundment of reservoirs, the earthquakes occurred in or around the reservoir area are called reservoir-induced earthquakes, which have the characteristics of low magnitude, shallow source and high intensity. The construction of large reservoirs plays an important role in promoting the local economic development, improving the water conditions of the people and affecting people’s life and property. Therefore, the identification, prediction and judgment of reservoir induced earthquake is an important technical support to ensure the construction and operation safety of hydropower stations. Over the years, many scientific and technological personnel have carried out active and large amount of research. This paper reviews and sorts out the macroscopic identification of reservoir induced earthquakes, including the mechanism of reservoir induced earthquakes, the cases of reservoir induced earthquakes, and the identification of reservoir induced earthquakes. Some problems and future research directions of reservoir induced earthquakes are discussed.
Experimental study on anti-collapse performance of beam-column assembly considering surrounding constraints
Authors: Weihui Zhong , Di Gao , Zheng Tan 
Published: February 2021

Abstract
Due to the uncertainty of the position of the failure column in the building structure, the surrounding constraints of the beam-column substructure are different after the local failure. Three-column and two-beam substructures with two different boundary conditions are taken as the research object (overall constrained and partially constrained), the failure mode, mechanical form and anti-collapse mechanism of the beam-column substructures are investigated by static loading tests. Tests show that the deformed forms of the two specimens are similar, the development process of the resistance mechanism follows the beam mechanism stage, the mixing stage of beam mechanism and catenary mechanism, and the catenary mechanism stage, however, boundary conditions have a significant influence on the development of catenary mechanism of beam-column substructure, the catenary mechanism of overall constraint specimens accounts for 30% of the total resistance, while the ultimate deformation capacity of partial constraint specimens is weak, and the catenary mechanism resistance only accounts for 15%.
Earthquake risk and damage assessment for airport transportation system
Authors: Yang Ying , Wang Xiao , Deng Nan 
Published: February 2021

Abstract
Taking airport transportation system as the main research object, this paper studies the potential danger and direct economic loss of earthquake. Based on the structural response and damage characteristics of airport transportation system under earthquake action, the framework and theoretical model of HAZUS disaster assessment and direct economic loss developed by FMEA are introduced. This paper focuses on the application of vulnerability curve and capacity curve in airport transportation system risk assessment and economic loss assessment. Taking an airport terminal suffering from a magnitude 8 earthquake as an example, the potential damage degree, probability and direct economic loss of the earthquake are quantitatively calculated, and the property loss is given, thus explaining the importance of the seismic risk assessment framework and method to the safety assessment of China.
Experimental study on flocculation-Vacuum-Electroosmosis method for strengthening soft soil foundation in coastal area
Authors: Hu Zhen 
Published: February 2021

Abstract
In view of the traditional vacuum preloading method to reinforce soft soil foundation, puts forward a new method of foundation reinforcement: flocculation - vacuum - electroosmosis method, and indoor test, the test shows that flocculation - the vacuum - electroosmosis method can greatly reduce the moisture content of reinforced soil, enhance the vane shear strength, and the reinforcement effect was homogeneous.
Construction Site Safety Management Research Based on SEM
Authors: Huang Ying , Wei Jinguo , Liu Mengru , Xiong Wenwen 
Published: February 2021

Abstract
The construction project provides a large number of employment opportunities for the construction workers, and the health of the construction workers is closely related to the safety management of the construction site. This paper first designs construction workers’ health and construction site safety management measurement scale by using literature analysis and group interview. After that, through the structural equation model(SEM), the author reveals the path between the construction workers’ health and construction site safety management of the labors and contractors. According to the results of the discussion, the construction workers’ physical health and the safety technology management are the core of construction site safety management.
Safety Assessment of Gas Pipeline Body and Weld Stress in High Fill Area
Authors: Wang Dongyuan , Zhang Zhenyong , Yang Jian , Zhao Zifeng 
Published: February 2021

Abstract
Gas pipeline is occupied by high-filled soil and a large amount of soil has caused long-lasting additional stress on the pipeline. Under the action of the additional stress of the high fill soil, the pipeline may undergo relatively large displacement and deformation, which will cause harm to the safe operation of the pipeline. In order to clarify the stress and deformation state of gas pipeline body and weld in the high fill area, this paper preliminarily calculated the radial stability of gas pipeline under the action of the high-fill soil and the stress state of the weld under the ovality deformation. According to the actual parameters, boundary conditions and deformation of pipeline, a finite element model is established to calculate and check the stress state of the pipeline in the high fill area. Analyzed the serviceability of the pipeline according to the requirements of gas pipeline integrity management specification. Finally, according to the analysis results, a comprehensive assessment of the high fill area of the pipeline is carried out, and recommendations for the next treatment measures are put forward.
Research on Parsing and Storage of BIM Information Based on IFC Standard
Authors: Wang Ruoxiao , Tang Yongjing 
Published: February 2021

Abstract
Industry Foundation Classes(IFC) defines the standard exchange data format of building information model. For making it possible to serve the whole life cycle of structure, it is necessary to parse and save BIM information based on IFC Standard into database. The research is implemented by Java language and MySQL database. The whole project is called IFCParser and consists of three modules: IFC Entity Module, IFCFile Parser Module and Persistence Module. IFCFile Parser Module uses lexical analyzer and syntax analyzer to decompose IFC files based on EXPRESS language into entity classes, which is called the IFC entity. Persistence Module establishes the mapping relationship between Java class and MySQL database, and uses MyBatis framework to save information into relational database.
A Simplified Calculation Model for the Rail Layer in Harbinxi Railway Station
Authors: Biyu Bao 
Published: February 2021

Abstract
Considering the particularity of the station house withstanding dynamic load as well as the characteristics of frame structure, the discrete analysis was used to study the finite element structure of the station house. By comparative analysis on various element simulation approaches, this paper studied the rational approach to simplify the model so as to achieve a more realistic stress status for computation results.
Campus Planning and Design of Nantong Institute of Technology Under the Background of Green and Development
Authors: Huang Wenjuan 
Published: February 2021

Abstract
Green and development have important guiding significance for campus planning and design. The article analyzes the campus planning and design project of the Hai’an campus of Nantong Institute of Technology as an example, and explains that campus planning and design are the basis and norms for the construction of universities and the guarantee for the sustainable development of the school. Taking the green concept as the center, reasonable campus planning and design can comprehensively reflect the characteristic concept of the school, interpret the cultural vision of the campus, and meet the diverse functional needs of teachers and students’ research-practice-humanistic spirit. It can enhance the centripetal force of students, play an imperceptibly important role in enhancing the sense of identity and belonging of the campus image, and can promote the overall, coordinated and ecological development of university campus construction, and thus better exert the ability and role of applied universities. It is the source of the intention to create planning and design, and the core idea of campus design.
Quantitative settlement hazard assessment for a permafrost embankment based on distributed optical fiber monitoring
Authors: Li Zhen , Wang Shuangjie , Zhang Juan , Yuan Kun 
Published: February 2021

Abstract
Quantitative assessment of the highway settlement hazard in permafrost regions is urgently needed for maintaining the performance of highway service. This study firstly conducted a field monitoring of an embankment located in the permafrost region by performing the distributed fiber optic monitoring. Subsequently, a novel indicator named embankment disease indicator(EDI
ε) was developed based on strain gradient calculated through the monitoring results to build a permafrost embankment settlement hazard quantitative assessment framework. The results indicate that, (1) the distributed fiber optic monitoring can reflect the uneven settlement distribution of permafrost embankment over a wide range and long distance; (2) 0.152% is suggested as the strain gradient criterion to calculate EDI
ε, EDI
ε can quantitatively indicate differential settlement disease rate in permafrost embankment; (3) the model implementation results have a dynamic quantity consistent with the actual situation, the assessment framework is particularly useful for large regional uneven settlement assessment of permafrost embankment.
A novel AC Protection Scheme in electronic power system
Authors: Shen Hongming , Liu Peng , wang Ziqi , Liu Min , Du Na , Jiang Jing 
Published: February 2021

Abstract
The application of a large number of power electronic devices has caused great changes in the fault characteristics of the AC system, and the existing protection schemes are facing great challenges. This paper first analyzes the transient current waveform characteristics of AC line faults in different scenarios such as pure AC system, DC transmission system, and new energy grid connection, and then uses the correlation coefficient to identify the transient current waveform, and a new protection principle is proposed. Finally, the new protection scheme requirements on the transformer, sampling frequency and data window length are analyzed. The correctness of the analysis conclusion is verified based on EMTDC / PSCAD simulation.
New Energy Station Monitoring Equipment Rule Verification Model Based on Data Envelopment Analysis
Authors: Zhu Dongge , Ma Yiming , Li Yongliang , Yan Zhenhua , Liu Jia , Ma Rui 
Published: February 2021

Abstract
According to the functional and performance requirements of the new energy station monitoring equipment, an operating rule verification model based on data envelopment analysis is proposed, and the online automatic discovery of equipment and safe operation rules for key links are designed. The equipment adopts data envelopment analysis method to read real-time data of new energy station monitoring equipment, optimizes the automatic discovery function of key sections, and tests the operating parameters of wind turbines and wind farms online through remote testers, formulates monitoring rules, and forms data requirements, Use algorithms to acquire and process data, and build models. Realize the discrete processing and rule mining of key links and safety operating procedures to ensure the safe operation of new energy station monitoring equipment. Finally, the experimental results show that the equipment can quickly and automatically generate new energy station monitoring equipment safe operation knowledge and improve new energy Safety of station monitoring equipment.
Active optimization method of wind farm operation parameters remote test equipment based on Data Mining
Authors: Ma Rui , Xia Xuwei , Liu Jia , Huang Mingyu , Li Yongliang , Zhu Dongge 
Published: February 2021

Abstract
The function of remote test equipment for wind farm operation parameters is complex, which requires timely and accurate equipment tuning in complex environment. In order to achieve the above requirements, an active optimization method of wind farm operation parameters remote test equipment based on data mining is proposed. Combined with the data mining technology, the remote test characteristic data of wind farm operation parameters are collected. In order to grasp the operation status of the equipment timely and accurately, the remote test equipment is used for dynamic adjustment, and the real-time data update model of remote test is established and installed. Finally, the experimental results show that the active tuning method based on data mining for wind farm operation parameters remote test equipment is significantly higher in the actual application process, and fully meets the research requirements.
Analysis on Current Situation of Yunnan’s Demand Response and Research on Improvement Methods
Authors: Ma Gaoquan , Wang Bangcan , Xie Mengfei , He Peishan , Huang Yifan , Gao Ciwei 
Published: February 2021

Abstract
At present, the implementation of DSM fails to effectively alleviate the seasonal and periodic power shortage in Yunnan Province, and it is still dominated by the active regulation of power grid companies, lacking of market-oriented mechanism. Based on the experience of Jiangsu and Shandong Province in demand response, this paper puts forward several problems in Yunnan Province, such as the lack of basis for formulating demand response subsidy price, the platform construction has not yet realized the power data access of main power users, the implementation of demand response is imperfect and lacks market-oriented mechanism. On this basis, improvement methods are proposed, including distinguishing the capital sources of peak shaving and valley filling demand response, promoting the construction, development and operation and maintenance of the demand response platform of Yunnan energy investment group, and actively organizing enterprises to apply for DSM demonstration enterprises and products in the industrial field.
Accelerated Aging Experiment of IGBT under Pulsed Power and Reliability Studies
Authors: Mao Yinhao , Sun Zhaolong , Yuan Zhifang , Pan Xiaochen 
Published: February 2021

Abstract
Pulsed power technology gives full play to the characteristics of high pulses in the form of short pulses, and gradually occupies a certain position in industrial applications. It needs to ensure stability and durability while ensuring that the working parameters are met, the switching performance is particularly important., therefore, the reliability study of IGBT power module becomes an inevitable requirement for reliability evaluation in engineering. This article mainly introduces the experimental method of the accelerated aging experiment of IGBT under pulsed power conditions. The electro-thermal simulation is carried out through PLECS and the low-power experimental platform is built to obtain experimental data. Finally, the experimental data is analyzed, and the change rule of the failure characteristic parameters with the aging process under the pulse power condition and the IGBT failure standard different from the typical operating condition are obtained.