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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
Investigation of the mix design and durability of methyl methacrylate colored thin-layer mixture
Wang Jiazhu;Zhang Derun;Zhao Zhichao;Liu Hanqi;Ma Zirong;Zhang Jixin;Methyl methacrylate(MMA) colored binders are increasingly used in engineering construction such as tunnels, service areas, and landscape roads, but there is currently no well-established mix design method for MMA colored thin-layer mixtures. The optimum dosage of curing agent was determined based on the heat release and curing process when MMA binder is mixed with curing agent and the tensile properties of MMA cured product. The optimal dosage of the aggregate was determined based on the anti-slip performance of the MMA colored thin-layer mixtures. The mix design method for MMA colored thin-layer mixtures was proposed accordingly. The test results show that the optimal job mix formula of the MMA colored thin-layer mixture is 64.22% MMA binder, 0.78% curing agent, and 35% aggregate. Indoor tests show that the MMA colored thinlayer overlay prepared according to this job mix formula has good road performance.
Study on the stresses of bolted ball nodes and their rods in clinker storage under transverse forces
Tao Yong;Sun Qiang;Cai Xinxing;In order to investigate the force and deformation characteristics of the large-span bolted ball node in the in-service cement clinker warehouse, the node and its members encountered transverse force under the initial defect of insufficient screwing length of high-strength bolts. Therefore, two types of tests are designed for the M20 bolted ball nodes with the depth of the node bolts screwed in as a variable parameter under the transverse force in the clinker warehouse, and the bending moment-angle and load-stress curves are obtained. The finite element software is then used to establish and validate the finite element model of the two types of tests, supplementing the bending moment-turning angle curves of the bolted ball nodes of other specifications. The results show that: cement clinker warehouse bolt ball node either full screwing or have screwing into the insufficient, the rod encountered lateral force, the rod and node deformation is obvious, the node's bending moment-turning angle curves show three stages, the node bending stiffness is not unique. In the node itself encountered lateral force, full screwing node bending stiffness is unique, with the screwing depth decreased node bending capacity decreased significantly, the node in the two force mode bending moment-corner curve also has obvious stiffness enhancement and not obvious stiffness enhancement of two kinds; with the increase in node specifications of the change in the force mode of the node overall stiffness of the impact is not obvious.crease of the change in the mode of force on the node of the overall stiffness of the impact is not obvious.
Effect of excavation parameters of underground caverns on the stability of surrounding rock under homogeneous surrounding rock conditions
Wang Ya;Du Tiantian;Luo Xiaoqin;Guo Hong;Jiang Hong;Luo Tao;A finite difference method calculation model of the main cavern based on FLAC 3D was established to study the excavation stability of the underground caverns under homogeneous surrounding rock conditions. The influence of different excavation heights and depths on the displacement changes of the main cavern surrounding rock of underground caverns was systematically analyzed. The research results indicate that the vertical displacement of the top arch and bottom plate center of the main tunnel increases with the increase of excavation depth, and the vertical displacement of the arch waist and arch foot positions also shows an increasing trend. The impact of excavation depth on horizontal displacement is significant, with the horizontal displacement at the arch waist decreasing first and then increasing, while the horizontal displacement at the arch foot significantly increases with the increase of excavation depth. Reasonable selection of excavation parameters can effectively control the deformation of surrounding rock and improve the stability and safety of main tunnel construction. The research results provide theoretical basis and practical guidance for the optimization of underground cavern design and construction.
Research on the axial compression performance of reinforced concrete columns confined with CFRP fabric and ultra-high performance concrete
Wang Bo;Han Yufei;Wang Zicheng;In order to study the influence of CFRP fabric and ultra-high performance concrete(UHPC) combined reinforcement on the axial compressive properties of reinforced concrete columns,axial compression testswere carried out on 7 specimens,and the ultimate bearing capacity and ductility analysis were carried out. The experimental results show that the ultimate bearing capacity of CFRP fabric and ultra-high performance concrete composite confined columns is significantly higher than that of reinforced concrete columns,confined with CFRP sheet or ultra-high performance concrete; the strengthening effect of the CFRP sheet outer packaging combination confine method is better than that of the CFRP fabric inner packaging and inner/outer packaging combination constraint method. Finite element simulation of CFRP fabric and ultra-high performance concrete composite confined columns was conducted using Abaqus software. The simulation results showed that as the number of layers and width of CFRP sheet increased, the ultimate bearing capacity of the composite confined columns improved; as the spacing between CFRP strips increases, the ultimate bearing capacity of composite confined columns shows a trend of increasing and then decreasing. A bearing capacity calculation model for CFRP sheet and ultra-high performance concrete composite confined columns was proposed, taking into account the influence of CFRP sheet, ultra-high performance concrete, and welded ring stirrup on the confining pressure of the strengthening concrete. The calculation results were in good agreement with the experimental results.The study provide the theoretical reference on the engineering application of the strengthening of concrete column.
Finite element analysis of shear performance of FRC beams reinforced with prestressed steel strands
Li Yan;Wang Yunzheng;In order to the reinforcement effect of prestressed steel strands on FRC(Fiber reinforced concrete) beams and explore the improvement of its shear performance,Abaqus was used to simulate the model,and the steel strands were arranged by the pre-tension method,and the different prestress degrees of the steel strands were controlled by the cooling method,and four sets of control experiments were carried out. The specific reinforcement approach involved embedding prestressed steel strands in FRC beams and applying prestress via the cooling method before loading. Simulation results demonstrated that as the prestress level gradually increased: when reaching 50%, the beam's ultimate load-bearing capacity increased by 42.3% compared to the control group without steel strands; at 55% and 60% prestress levels, the capacities improved by 45.7% and 48.9% respectively. The reinforcement effect provided by the steel strands correspondingly intensified, significantly enhancing the shear capacity of FRC beams. The development trend of beam cracks was effectively controlled, thereby delaying structural failure processes. This study confirms that prestressed steel strands can substantially improve the shear performance of FRC beams.
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.
[Downloads: 2,339 ] [Citations: 186 ] [Reads: 143 ] HTML PDF Cite 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.
[Downloads: 2,764 ] [Citations: 159 ] [Reads: 118 ] HTML PDF Cite this article
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.
[Downloads: 2,050 ] [Citations: 155 ] [Reads: 110 ] HTML PDF Cite this article
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.
[Downloads: 2,764 ] [Citations: 159 ] [Reads: 118 ] HTML PDF Cite this article
Research on intelligent lighting control system of building based on STM32 microcontroller
XU Yong;HOU Bo-feng;WEI Li-ming;An intelligent lighting control system based on STM32 was designed,which can intelligently control the different needs of lighting environment.Firstly,to use CAN bus technology and to propose the hardware communication protocol of intelligent energy-saving lighting control system,and to design and realize the hardware subsystem of intelligent energy-saving lighting control.The CAN bus module is composed of processor STM32 and corresponding number of transceivers tja1050; Secondly,basing on BP neural network algorithm for data detection,to optimize the output illumination,and to design and implement the monitoring software subsystem of the upper computer.The intelligent lighting control system proposed in this paper provides a reference for energy saving of engineering application.
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