scholarly journals Design and Model Test of a Modularized Prefabricated Steel Frame Structure with Inclined Braces

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Xuechun Liu ◽  
Ailin Zhang ◽  
Jing Ma ◽  
Yongqiang Tan ◽  
Yu Bai

Modularized prefabricated steel structures have become the preferred design in the industrialization of steel structures due to their advantages of fast construction speed, high degree of industrialization, low labour intensity, and more. Prefabricated steel structures have some engineering applications, but all are low-rise structures with few applications in the field of high-rise buildings. Using finite element analysis with line and solid elements, full-scale experiments were conducted to study the single-span frame, which is the core load-bearing part of a modularized prefabricated high-rise steel frame structure with inclined braces. The mechanical mechanisms, computation methods, and design formulas of truss girders were obtained by comparing the finite element and model experiments and building a theoretical and experimental basis for the compilation of design codes. The mechanical characteristics under design load, the deformation and stress state, the elastic-plastic law of development, and the yield failure mode and mechanism under horizontal ultimate load were also obtained. Based on theoretical analysis, finite element analysis, and experiments, the design method of this frame was summarized and incorporated into the design code.

2014 ◽  
Vol 578-579 ◽  
pp. 703-706
Author(s):  
Xue Feng Cai ◽  
Zheng Zhang ◽  
Yong Chao Ma ◽  
Ji Zhong Zhou

Mobile steel building is a prefabricated building built in a factory, with advantages on moving conveniently, simple structure and scalability. For mobile steel buildings there are still not enough researches on the mechanical properties and mechanism of action, and there are still not enough relevant standards and requirements to conduct the design and construction of the buildings. In order to precede to theoretical study on steel frame structure of mobile buildings a method by Finite Element Analysis was proposed. This method is based on FEA software, Ansys. Using this method a two-story frame structure model was analyzed. The calculation results of lateral deformations under design loads by FEA were obtained and discussed.


2014 ◽  
Vol 681 ◽  
pp. 222-228
Author(s):  
Shou Tao Yao ◽  
Wei Cheng Zhao ◽  
Qun Cheng

High-rise super large aerial platform project construction has been a greater danger, How to ensure the quality of components assembled and the safety of the construction project is worthy of study. Through finite element analysis on construction conditions of steel structures, ensures the hydraulic synchronous lifting and construction technology of high-altitude hoisting and assembly, greatly reduced the difficulty of installation, quality, safety, cost, schedule is guaranteed.


2012 ◽  
Vol 619 ◽  
pp. 264-269
Author(s):  
Jun Xia Li ◽  
Zhi Qiang Jin ◽  
Rong Quan Wang ◽  
Zi Ming Kou

Aiming at the problenm of transportation to underground, and slinging, reshipment, assembly in underworkings for mining lage equipment , a set of slinging and reshipment system in the underground is developed. This system is a steel-frame structure consisted of multi-unit bridged structure junction,in which the double T-iron is taken as main load-bearing beam,and U-steel unit welded by back-to-back method is as a slanted prop triangle secondary beam.This system adoptes the three-dimensional modeling software Solidworks2007, and its COSMOS/Works modules, for the three-dimensional modeling and finite element analysis to this system. Through the finite element analysis, verified the correctness of the component design.


Author(s):  
Ailin Zhang ◽  
Xuechun Liu ◽  
Chen Tian ◽  
Xun Zhang ◽  
Yongqiang Tan

Modularized prefabricated steel structures have certain obvious advantages, i.e., rapid construction, industrial-scale production and pro-environmental aspects, and are the main method in industrialization of steel structures. Although applications of these structures have been reported all over the world, in most cases, the steel structural systems are only suitable for low-rise buildings, and their application in high-rise buildings is quite limited. This paper proposes a new type of modularized prefabricated high-rise steel frame structure with inclined braces. Based on the T30 hotel building, the mechanical properties, failure mode, failure mechanism and elastic-plastic development laws are investigated by using the elastic design of a structure under various load conditions, the analysis of the internal force and displacement responses under frequent earthquakes via the response spectrum method and linear time-history analysis, the static elastic-plastic pushover analysis under rare earthquake conditions. According to finite element simulations and testing, elastic and elastic-plastic structural design methods are proposed in this paper. This work provides an important reference for research and design of the same type of modularized prefabricated high-rise steel structures, and the design method has been compiled into design specification.


2013 ◽  
Vol 772 ◽  
pp. 47-51
Author(s):  
Chun Xia Gong ◽  
Cao Xi

This paper uses ANSYS10.0 to make modal analysis of the finite element models of the light steel frame. Set up two finite element analysis models with different stiffness of floor, one with the rigid floor assumption, another kind with the light steel floor,so as to research the influence of the calculation results of dynamic analysis. According to the analysis results,we can get that how to define the stiffness of floor is more accurate when design the light steel frame structure. So that to provide the theoretical basis for the designing of light steel frame constructions.


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