scholarly journals Design and Specification Compilation of a Modularized Prefabricated High-rise Steel Frame Structure with Inclined Braces Part I: Integral Structural Design

2015 ◽  
pp. 206-213
Author(s):  
Ailin Zhang ◽  
Xuechun Liu ◽  
Chen Tian ◽  
Xun Zhang ◽  
Yongqiang Tan
Keyword(s):  
Structural Design ◽  
Response Spectrum ◽  
Time History ◽  
Steel Structures ◽  
Steel Frame ◽  
Frame Structure ◽  
Scale Production ◽  
Elastic Plastic ◽  
High Rise ◽  
Steel Frame Structure

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.

scholarly journals Design and Specification Compilation of a Modularized Prefabricated High-rise Steel Frame Structure with Inclined Braces Part II: Elastic-plastic analysis and Joint Design

2015 ◽  
pp. 248-255
Author(s):  
Xuechun Liu ◽  
Ailin Zhang ◽  
Chen Tian ◽  
Xun Zhang ◽  
Yongqiang Tan
Keyword(s):  
Design Method ◽  
Time History ◽  
Steel Structure ◽  
Steel Structures ◽  
Frame Structure ◽  
Scale Production ◽  
Base Shear ◽  
Plastic Properties ◽  
Elastic Plastic ◽  
High Rise

Modularized prefabricated steel structure has some obvious advantages, such as fast construction, industrial-scale production and environment-friendliness. Although it has been used for low-rise buildings, its applications in high-rise buildings are quite less. The elastic-plastic time-history analysis under rare earthquake conditions is performed on a 30-floor building. The changing law of the base shear force, the story drift angle, the stress, the damage characteristics, etc. are studied. According to the theoretical analysis, the finite element simulation and the model test, the design methods and the relevant formulas regarding the elastic and elastic-plastic properties of the beam-column connection joints, the column flange joints and the inclined brace joints are proposed in this paper. The control parameters for the structural design are also discussed. This paper provides an important reference for the research and design of the same type of modularized prefabricated high-rise steel structures, and the design method has been compiled into design specification.

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
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Design Method ◽  
Steel Structures ◽  
Steel Frame ◽  
Frame Structure ◽  
Element Analysis ◽  
High Rise ◽  
High Degree ◽  
Steel Frame Structure

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.

scholarly journals Dynamic Performance Analysis of Steel Frame Structure under Seismic Action

2019 ◽  
Vol 2 (2) ◽  
pp. 1
Author(s):  
Xiaojun Yuan ◽  
Yanmu Qu ◽  
Jinlong Liu ◽  
Kailin Wei ◽  
Haifeng Zong
Keyword(s):  
Dynamic Performance ◽  
Time History ◽  
Steel Frame ◽  
Frame Structure ◽  
Seismic Action ◽  
Element Analysis ◽  
History Analysis ◽  
Dynamic Time ◽  
Steel Frame Structure ◽  
Dynamic Performance Analysis

In order to find out the dynamic characteristics of a steel frame structure project in the 8 degree (0.3g) area, the artificial wave, Taft wave and El Centro wave were input by using the finite element analysis software ANSYS. The dynamic time-history analysis of the structure shows the dynamic performance of the structure under the frequent earthquakes and rare earthquakes.

Stress Impact Analysis of Steel Frame with Different Beam-Column Connection Mode

2013 ◽  
Vol 275-277 ◽  
pp. 1028-1033
Author(s):  
Gang Wang
Keyword(s):  
Impact Analysis ◽  
Structural Response ◽  
Time History ◽  
Horizontal Displacement ◽  
Element Model ◽  
Steel Frame ◽  
Frame Structure ◽  
Natural Period ◽  
Vibration Period ◽  
Steel Frame Structure

This paper uses the SAP2000 to establish different beam column connections of steel frame structure finite element model, comparative analysis of the beam column for the rigid connection, hinged, semi-rigid connections of steel frame structure, the dynamic characteristics of structure displacement and internal force influence. At the same time, the dynamic time-history analysis method for structural displacement supplementary checking, analysis of structural response to seismic wave degree．The results showed that：compared with rigid, the structure of semi-rigid connections to the larger natural period，and with the rotation stiffness decreases vibration period increases; Semi-rigid steel frame connection to reduce the resistance to push the layer stiffness，making the structure of the horizontal displacement increased．

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