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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
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E-mail: jljzdxxb@jlju.edu.cn
Website: https//jljz.cbpt.cnki.net/portal
Research progress on data-driven size effect of concrete members
Zhang Binlin;Jin Liu;Zhang Qing;Tang Xiaocheng;With the rapid development of intelligent construction technologies, structural performance prediction is undergoing a paradigm shift from traditional empirical formulations to data-driven approaches. Concrete members under brittle failure commonly exhibit significant size effect characteristics, where the nominal strength decreases with increasing structural dimensions. This phenomenon poses challenges to the applicability and safety of conventional strength design formulas when applied to large-scale structures. Based on recent largescale experimental databases from both domestic and international studies, this paper systematically reviews the research progress on size effects in typical reinforced concrete members, including beams, columns, and shear walls. The review highlights key aspects including database development, parameter extraction techniques, and modeling strategies. In particular, the application of data-driven methods such as grey relational analysis and multivariate regression in size effect modeling and strength formula refinement is thoroughly evaluated. The results indicate that data-driven models outperform conventional approaches in terms of prediction accuracy, parameter sensitivity recognition, and adaptability to multiple loading conditions. Looking ahead, the deep integration of large-scale experimental databases with artificial intelligence techniques is expected to provide a solid foundation for performance prediction and intelligent design of concrete structures, contributing to the advancement of intelligent construction theory and practice.
Research on non structural seismic loads in space grid based on intelligent design
Zhang Chenyang;Li Wenliang;The continuous improvement of the seismic design code for buildings has significantly enhanced the seismic performance of the main building structure. However, the seismic issues of non structural components have not received sufficient attention, especially in the research on spatial structures, where there are gaps. This study aims to analyze the dynamic performance of four-sided supported space grids with lower supporting structures and evaluate the applicability of GB 50010—2010 Code for seismic design of buildings(2024) for the seismic design of non-structural components in space grids. Through the establishment of a finite element model for dynamic time-history analysis, the study proposes a method for intelligently identifying the dynamic responses of nodes, and systematically reveals the influence laws of parameters such as span, support mode, length-to-width ratio, and slope on the seismic loads of non-structural components. The results show that the seismic loads on non-structural components in this type of space grid may exceed the design values in the Chinese code, indicating the insufficient applicability of the current code. The mean value of the maximum horizontal acceleration respones of nodes in the upper-chord supported space grid is higher than that in the lowerchord supported one. The horizontal acceleration of nodes decreases with the increase of span and increases with the increase of slope. The mean value of the maximum vertical acceleration respones significantly increases with the increase of the length to width ratio. Based on the above laws, the study constructs a digital twin model of the central roof of Shenyang south station combined with the concept of intelligent construction, evaluates the seismic loads on its non-structural components, and proposes targeted intelligent seismic strategies.
Intelligent damage identification of cable-stayed bridge structures based on convolutional neural networks
Xie Rongliang;Bai Xin;Aiming at the problems of difficult feature extraction of a large amount of data in bridge health monitoring and insufficient accuracy of traditional damage identification methods, a deep learning method integrating vibration response analysis and convolutional neural network(CNN) is proposed to achieve intelligent identification of hidden damages of bridges. By establishing a finite element model of a cable-stayed bridge in Abaqus, damages at different positions are systematically simulated, and dynamic time-history analysis is carried out to obtain the structural vibration displacement response data. For each type of condition, 500 noisy data samples are generated to construct a multi-dimensional training dataset. The sampling method is adopted to divide the dataset into training set, validation set and test set according to a certain proportion. An improved convolutional neural network model is used for damage feature learning. The robustness of the model is verified through noise interference experiments. Under varying levels of noise interference, the model maintains high recognition accuracy and robustness.
Stability study of karst caves underlying rock-socketed bridge piles based on the extended finite element method
Guo Jing;Zhang Rongbo;Pu Qi;Li Zhiyuan;Li Lin;Rock-soketed piles are the main foundation from of bridges in karst areas; the stability of underlying karst caves directly affects pile bearing safety, settlement control and long-term structural service performance. Focusing on the instability mechanism and stability of karst caves beneath rock-socketed piles, this study takes the karst caves under bridge pile foundations at Xinxing River Extra-Dose Bridge site of the GuangzhouKunming expressway reconstruction and expansion project as the engineering background. A finite element analysis model for cracking and instability of karst caves beneath pile toes is established using the extended finite element method, and a Abaqus-Python parametric analysis script is developed to realize automated modeling and batch calculation with variable parameters including cave size, position, shape, roof thickness, and loading conditions. The control variable method is adopted to quantitatively analyze the influences of roof thickness, piletop load, cave shape, and horizontal offset of the cave relative to the pile bottom on stability, and the instability mechanism and response of karst caves under increasing pile-end loads are systematically investigated. The results show that the instability failure of karst caves beneath pile toes undergoes four stages: compaction and stress redistribution, crack initiation and local yielding, crack propagation and plastic zone penetration, and overall instability and bearing capacity loss. The stability of karst caves is significantly improved with increasing roof thickness, while cave shape and load eccentricity exert considerable effects on cave stability. The research findings refine the stability analysis method for rock-socketed piles in karst regions and provide a theoretical basis and technical support for the design optimization and engineering safety assurance of bridge pile foundations in similar intensely karstified sites.
Experimental study on bending resistance performance of light steel EPS concrete composite floor slabs
Liu Dianzhong;Wang Sai;Wang Heqi;Two light steel EPS concrete composite floor slab specimens with different steel ratios were made, and the influence of steel ratio on the flexural bearing capacity was studied. The test was conducted using a static loading test with both ends simply supported. The deformation and stress state of the steel frame were measured, and the ultimate limit state of the specimens was determined. Through observation and analysis of the test, it was found that the failure mode of the light steel EPS concrete composite floor slab was bending failure, and the failure mainly occurred in the pure bending section. The specimens did not show sudden failure, indicating that the new composite slab has good ductility. At the same time, the finite element method was used to analyze the deformation performance of the new composite slab, and the analysis results were very consistent with the test results. The research conclusions can provide theoretical basis for improving the design of light steel EPS concrete composite structures.
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: 2,341 ] [Citations: 186 ] [Reads: 172 ] 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: 2,766 ] [Citations: 160 ] [Reads: 151 ] 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: 161 ] 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: 2,766 ] [Citations: 160 ] [Reads: 151 ] 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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