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Administrated by The Education Department of Jilin Province
Sponsored by Jilin Jianzhu University
Editor-in-Chief: CHEN Lei
Edited and Published by Editorial Department of Journal of
Jilin Jianzhu University
Address: 5088 Xincheng Street, Changchun, China
Postcode: 130118
ISSN 2095-8919
CN 22-1413/TU
Tel: +86-431-84566046
E-mail: jljzdxxb@jlju.edu.cn
Website: https//jljz.cbpt.cnki.net/portal
Risk assessment of urban rail transit construction safety based on multi-source information fusion
WANG Qingling;LU Ying;LV Xiaofeng;ZHOU Qinqin;WANG Jiannan;YANG Meng;With the popularity of the smart construction site management system in urban rail transit engineering, a large amount of substantial and reliable information-based supervision data support has been provided for safety management in engineering projects. The multi-source information fusion construction risk assessment method based on monitoring data and evidence theory is proposed within the context of the smart construction site management system. First, risk factors detectable through Smart Construction Site Management System are extracted from 224 urban rail transit construction safety accidents, categorized into four aspects:operators, machinery and equipment, management personnel, internal and external environments, thereby constructing a risk evaluation indicator system. Then, evidence theory is employed to integrate field monitoring data with expert assessments, forming a comprehensive risk evaluation framework. Finally, the feasibility of the proposed method is validated through a case study of a metro project in Nanjing. This methodology overcomes the limitations of subjective weighting assignments and can reflect the construction safety risk status more objectively, which is of great significance for improving the safety assessment level of urban rail transit construction.
Study on eccentric compressive bearing capacity of light steel and EPS concrete composite wall
WANG Jinxue;LIU Dianzhong;LV Linze;Through the three light steel and EPS concrete wall eccentric compressive load capacity experiments, this study obtained the wall load-deflection curve, analyzed the effect of steel content on the eccentric compressive load capacity of the combined wall and compared the experimental results with the finite element. The results show that the failure mode of the composite wall is flexured destruction, the position of the largest failure degree is located in the middle of the wall, and the deflection is smaller as the closer to the top beam and the botton beam. With the increase of the steel content, the eccentric compressive bearing capacity of the composite wall also increases, and the ultimate bearing capacity increases by 3.7 % for every 0.1 % increasing in the steel content of the composite wall.This study provides a basis for the design of lightweight steel and EPS concrete composite structures.
Finite element analysis of partical pressure performance of green fiber circular tubular column
LI Yan;WANG Heng;In order to study the influence of eccentric distance and green fiber( high quality steel fiber extracted from waste tires) on the partical pressure performance of circular concrete filled steel tube column, considering the eccentric distance and green fiber content, the numerical simulation of different eccentric distance and green fiber content is analyzed by Abaqus software.Five groups of specimens were designed with offset distances of 15, 30, 45 mm, and fiber incorporation of 0%, 1%, 1.5%, respectively. The stress cloud map and load-displacement curve under the influence of two factors was analyzed by Abaqus software. The results show that the increase of offset distance decreases the bearing capacity and ductility of the specimen. During the elastic phase, the stiffness evolves as the eccentricity increases. The incorporation of green fiber reduces the number of cracks in the core concrete.As the fiber content increases, the ultimate bearing capacityis slightly improved, but the impact on ductility is relatively small.
Study on flexural performance of ECC concrete beams with machine-made sand hybrid fiber after high temperature
JIANG Hao;WANG Yang;ZHANG Yunlong;CUI Jinyu;In order to study the flexural performance and conductivity of ECC high-performance fiber reinforced concrete beams with machine-made sand after high temperature, two groups of concrete materials with different polypropylene fiber contents, short-cut carbon fiber contents and fly ash contents were selected to make beams for high-temperature experimental study, and the two groups of mix beams were treated with high temperature(200,400,600 and 800 ℃) respectively to study the effects of different high temperatures on the bending capacity of the beams. The test was carried out by simply supported static loading at both ends to measure the deformation of the beam and the bending bearing capacity of the beam, so as to provide material guarantee for the super high-rise building. At the same time, the resistivity of the beam is measured to determine the conductivity of the concrete, so that it can not only be used as a building load-bearing material, but also play an important role in electrical, electronic, electromagnetic interference shielding, anti-static, and rebar cathodic protection.
Experimental study on basic physical properties and bearing capacity of cement-clay improved aeolian sand
KOU Yongqi;ZHU Chunfeng;AI Huaxue;XIAO Bo;Improvement of aeolian sand is of great significance for the construction of local highway transportation, improvement of ecological environment, and promotion of regional economic development. To this end, particle analysis tests, specific gravity tests, boundary moisture content tests, compaction tests, etc. were conducted on aeolian sand. The soil load capacity indicators of the roadbed were evaluated through CBR tests. Cement and clay were added to the aeolian sand for improvement, and the basic physical properties of cement clay improved aeolian sand were studied. The test results show that with the addition of cement and clay, the indicators of the maximum dry density, liquid limit, plastic limit and plasticity index in the soil are higher than those of the before improved aeolian sand, and show an increasing trend with the increase of cement content. The optimal moisture content slightly decreases. The addition of cement and clay significantly increases the CBR value, effectively reducing the impact of freeze-thaw damage on the soil's CBR value. As the number of freeze-thaw cycles increases, the permeability coefficient gradually decreases. The coefficient of permeability decreases with the increase of cement dosage.
Research on Cloud Computing Based on Virtualization Technology
LI Gang-jian(School of Computer science and Engineering Jilin Institute of Architectural and Civil Engineering,Jilin,Changchun,China 130118)In the paper,the author did research on the current trend of cloud computing technology and the cloud computing model.According to its own characteristics,a way is presented based on Hyper-v.The platform has some advantages,so that the characteristics of virtualization will come into perform well.
The Development Status and Prospects of Diatomite
XIAO Li-guang,ZHAO Zhuang,YU Wan-zeng(School of Material Science and Engineering,Jilin Institute of Architecture and Civil Engineering,Changchun,China 130021)Diatomaceous earth as a very abundant mineral resources,as its porosity,adsorption is strong,light,high melting point,thermal insulation,sound absorption,low refractive index,chemical stability and so on,it has a widely used in many fields.This paper describes the latest research and application of diatomite in fillers,filter aid,agriculture,construction materials and other areas.
Iron Tailings Comprehensive Utilization at Home and Abroad
XIAO Li-guang,YI Jing-hong,CUI Zheng-xu(School of Material Science and Engineering,Jilin Institute of Architecture and Civil Engineering,Changchun,China 130118)The mineral resource is one of the human survival and development important material bases,along with mineral resource's massive developments and the use,the ore is day by day deficient,the tailings recycling has a second world attention.This article describes the tailings and the comprehensive use of the status quo,the application of the building materials,and the proposal in the future development of tailings.
Development of the Sludge Treatment Techniques
Wang Shiyuan (The Countryside Hygiene and Reform Water Office of Jilin Province)Cui Yubo, Wang Cuilan, Jian Zhiyuan (Department of Urban Construction)This paper simply introduced the sludge treatment techniques and its development, and presented the regulation of choosing and developing sludge treatment techniques.
Summary of Data Mining Methods
GUO Xiu-juan (Department of Computer Engineering,Jilin Architectural and Civil Engineering Institute,Changchun130021)The good methods and technologies of data mining may get excellent knowledge.This paper presents an overview on data mining methods.First,the concept of data mining is discussed.Then,this paper describes the theories and technologies on data mining,such as relational rules,decision tree,neural network,rough sets,clustering analysis,genetic algorithms,and statistics analysis.Finally,how to study data mining is forecasted.
Research Progress in Synthesis and Application of Quantum Dots
LI Hua-nan;FENG Wei;WANG Ting;Polyimide had many advantages,such as heat resistance,low temperature resistance,resistance to radiation,flame retardant,non-toxic characteristics,excellent mechanical properties,dimension stability,chemical stability and biocompatibility etc,had been widely used in aviation,aerospace,electrical,electronics,communications,buildings,cars,and other areas of the tip. In this paper,a review was given about the basic classification and main characteristics of polyimide as the core. It was summarized the polyimide synthesis method and modification of significance. Moreover,suggestions were expounded about the application progress of polyimide in many fields,and prospect the development trend of the future.
The Comparison of the French Versailles Palace and China Beijing Imperial Palace
YU Qi,MO Wei (School of Architecture and Planning,Jilin Institute of Architecture and Civil Engineering,Changchun,China 130118)By comparing space layout,building systems,construction materials and structural,architectural decoration and color of different points for the French Versailles palace and the Beijing national palace museum in China,from macroscopical to microcosmic comparison of the two countries palace architecture,cultural of the similarities and differences between China and France is analyzed.Trying to find out the difference between eastern and western culture as the history of eastern and western architectural palaces outstanding representative of China's Beijing palace museum and the French Versailles palace,has long been regarded as the world two great cultural windows.Different cultures on the "beauty" of the pursuit are not the same.Therefore,we compared from an aesthetic point of view these two in the history of human civilization occupy a considerable proportion of the palace construction.To arouse people on architectural aesthetics thinking and a new understanding are done.
Black Humor in George Orwell’s Animal Farm
ZHAO Yu-hong(School of Foreign Language,Jilin Institute of Architecture and Civil Engineering,Changchun,China 130021)Black humor skill is applied by George Orwell in his masterpiece Animal Farm to represent an inhumane society.The skill of irony,the implication of the characters,and fallacy will be analyzed in this article.
The Development Status and Prospects of Diatomite
XIAO Li-guang,ZHAO Zhuang,YU Wan-zeng(School of Material Science and Engineering,Jilin Institute of Architecture and Civil Engineering,Changchun,China 130021)Diatomaceous earth as a very abundant mineral resources,as its porosity,adsorption is strong,light,high melting point,thermal insulation,sound absorption,low refractive index,chemical stability and so on,it has a widely used in many fields.This paper describes the latest research and application of diatomite in fillers,filter aid,agriculture,construction materials and other areas.
The Cause of Global Warming
WANG Hong-jie,SONG Xiao-dong,WANG En-shi(Jilin Institute of Architecture and Civil Engineering ,Changchun ,China 130021;In the early 1930s ,the distinguished Yugoslavian climatologist Milankovich had already developed the theory that a tiny ? uctuation in the eccentricity ratio of Earth's orbit ,or the obliquity of Earth's spin axis ,even in the position of the first point of Aries may render a direct in? uence on the solar radiation's range and degree;therefore ,causes the climate change on Earth .Based on a comprehensive calculation ,the authors came to the conclusion that besides the robust increase of greenhouse gases(CO2 ,CH4 ,etc .) , there are also other factors that cause global warming , but this paper focuses on the angular change between Earth's axis and its ecliptic plane .According to the paper ,both the internal variables(earthquake ,wind ,tide ,rocket's launching ,etc .) and the external variables(the sun's motion , other planets' motion ,meteoric stone ,etc .) impacted greatly on this angle .What's more ,no matter to what degree this angular change arrives at ,it inevitably causes the climate change on Earth throughout the time .
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