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Yangpu Bridge Stress Analysis

Author: ZhongHai
Tutor: ZhangZuoZhi
School: Central South University
Course: Civil Engineering
Keywords: Mixed Cable-Stayed Bridge Steel - concrete joint section Main beam Deck system
CLC: U441
Type: Master's thesis
Year: 2011
Downloads: 32
Quote: 0
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Abstract


Hainan Yangpu Bridge (58.5 63 58.5 460 58.5 63 58.5 ) m seven cross the twin towers and double cable plane hybrid composite beam bridge, passage way six-lane main bridge . The bridge cross prestressed side of the main beam structure and in the cross using the I-beam composite beam structure side span and mid-span through steel - concrete joint section of the transition , the complexity of the force . Such main beam cross-section in the form of hybrid girder cable-stayed bridge fewer roads and bridges at home and abroad , combined with the performance of the segment force the bridge and steel - concrete study , mainly to complete the following tasks : 1 paper beam method , using space board has established a full-bridge space finite element model of the Yangpu bridge , its dead load and analyze the performance of the force under the most unfavorable live load , temperature loads , wind loads and load combinations . The results show that : the various components of the bridge by reasonable force , strength and stiffness requirements are met . 2 , the main beam , floor system in considering and not considering concrete creep performance comparison analysis of the force under the effect of two cases . The results show that : considering creep effect , the relative stiffness of the bridge deck to reduce Redistribation steel main beam subjected to a greater proportion of internal forces , its internal forces increased , while the decrease in the internal forces of the bridge deck . 3 fine steel - concrete segment space finite element model , made ??an analysis of the performance of its force , the results showed that: under the action of a variety of conditions , all steel members and concrete along the bridge were under pressure ; steel members and concrete stress is less than the design value , and there is a large margin ; steel and concrete stress in steel - concrete composite sections are small ; steel - concrete composite smoother force transmission of the segment with the right side of pure steel segment , in combination with paragraph the pure steel segment junction as well as the combination of segments with pure concrete segments connected at the stress concentration phenomenon is not serious . 4 steel - concrete segment in overload conditions ( 1.6 times the dead load axial compression maximum live load ) force performance , the results show that : the steel beams in steel - concrete composite segment and the combination of surface most of the area of the right- 1.6m range were less than stress -170Mpa; concrete in steel - concrete composite the segment and combine segment to the left 3m within most areas of stress are less than the design value - 22Mpa have the carrying capacity of steel - concrete joint section . The results of this research to Hainan Yangpu Bridge designed to provide the basis for the reference value of other mixed beam cable-stayed bridge .

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CLC: > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics
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