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Simple Harmonic Excitation Numerical Analysis and Experimental Study of Space Bidirectional Beam String Structure

Author: YeChengJie
Tutor: YinZhiXiang
School: Liaoning Technical University
Course: Structural Engineering
Keywords: Space -way beam string Harmonic load Dynamic Response Model test Numerical Analysis
CLC: TU399
Type: Master's thesis
Year: 2009
Downloads: 49
Quote: 0
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Abstract


Beam string structure is a new form of spatial structure , large-span spatial structures is a typical rigid hybrid system . It consists of strings, composed of struts and flexural compression members , through the strings of prestressed compression members to improve the flexural mechanical properties of self-balancing system . Winding steel beam beam string as a two-way beam string structure space a special case of harmonic loads in the dynamic response of the country is still rare . In this paper, consulting a large number of relevant literature on the basis of a brief review of the development of beam string structure history , engineering applications and research status, for winding steel beam string harmonic loads in the dynamic response of doing meaningful discussion . This paper started from the finite element theory , the study of the work involved in the beam string structure with finite element related knowledge , calculation methods are briefly introduced . By ANSYS finite element analysis software for the design of winding steel space -way beam string structure of numerical analysis , in order to study bent steel beam string structure LOADS Dynamic response , in order to consider the structure of prestressed and geometric nonlinear effects , analytical carried out in a static stress analysis of structural , modal analysis, linear and nonlinear transient response analysis harmonic time history analysis , summarized in lOADS structural dynamic response under the law . Then through the 1/ 4 scale model tests to validate the model design work was carried out similar ratio calculations to determine the model material , cross-sectional dimension ; model tests according to design requirements produced a beam string scaling model , the fixed hinge bearing, rolling hinge bearing ; for data collection and analysis process . Through numerical analysis and model test data processing, mastered the winding steel beam spatial beam string bidirectional dynamic response of the law , the role of the spatial structure of the roof there is a harmonic excitation loading conditions working conditions made ??meaningful recommendations .

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