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Model Test Study and Analysis on Torsion Effect and Distortion Effect of Box-girder with Corrugated Steel Webs

Author: WangWen
Tutor: LiLiFeng
School: Hunan University
Course: Bridge and Tunnel Engineering
Keywords: Combination box girder with corrugated steel webs Constrained torsion Distortion Model test Finite Element Diaphragm
CLC: U448.213
Type: Master's thesis
Year: 2008
Downloads: 205
Quote: 9
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Abstract


Corrugated steel webs box girder is a new type of steel - concrete composite structure is widely used in Japan and France . Compared to traditional concrete box girder structure with light weight , high efficiency of prestressed load , short construction period , we can avoid web cracking , etc. , and therefore has a good prospect of application . In this paper, the composite box girder with corrugated steel webs twisting and distortion problems were more systematic study . (1) box girder theory based on a combination of box girder with corrugated steel webs characteristics, using the the Ubbelohde second theoretical analysis of this structure in the role of eccentric load torsion properties and its calculation method . (2 ) analysis of the distortion effect , according to the the combination box girder with corrugated steel webs distortion analysis of differential equations with elastic foundation beam control differential equations similar to the form of elastic foundation beam analogy method combined with the finite element method for solving . (3 ) through the elastic stage model test validation constraints twisting and distortion warping normal stress is calculated using the above theoretical torsion shear stresses close comparison with the experimental values ??. General purpose finite element program Ansys analysis results are in good agreement with the experimental results , this calculation method is correct , and the calculated results are somewhat safe . ( 4 ) analysis of the impact of geometric parameters on the performance of the corrugated steel webs Box Girder the contrast settings diaphragm not set the diaphragm in both cases , the calculated results found , set the diaphragm can be reduced in the box beam distortion effect , set the diaphragm is effective engineering measures to reduce warping normal stress . Finally, the results of the analysis by the geometric parameters , and made ??some suggestions for the preliminary design of the corrugated steel webs combo box girder .

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CLC: > Transportation > Road transport > Bridges and Culverts > All kinds of bridges > Bridge: Structure > Beam bridge > Box girder bridge
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