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Analysis of Reasonable Cable Force and Unitary Stability of a Dissymmetrical Single-pylon Cable-stayed Bridge

Author: MaYanDong
Tutor: ZhouShiJun
School: Lanzhou Jiaotong University
Course: Bridge and Tunnel Engineering
Keywords: Single-tower cable-stayed bridge Reasonable Permanent Loads Overall stability
CLC: U448.27
Type: Master's thesis
Year: 2011
Downloads: 36
Quote: 0
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Abstract


Asymmetric alone tower cable-stayed bridge is the the ground anchor - cable-stayed bridge , this bridge will be the main cross- cable anchor in the main beam , side span cable arrangement of a cable-stayed bridge anchorage gravity bridge table , this bridge is applied to the bridge site where terrain conditions , the main span of great and small side spans . The an asymmetric alone tower cable-stayed bridge , for example , reasonable dead load Cable Forces and overall stability analysis of two main elements , do the following : ( 1) the existing cable-stayed bridge reasonably constant cable Forces of the calculation method described and summarized using minimum bending energy method to determine the ground anchor cable-stayed reasonable Permanent Loads , and through the plane frame finite element calculation software ansys to achieve this process . ( 2) In determining the reasonable cost bridge cable force , Cable Stayed Bridge , the overall static analysis , and discusses the different characteristics of the two tone cable method and ground anchored cable-stayed bridge features . Cable-stayed main beam bending energy and the main beam main tower bending energy as the state variables ansys software optimization , to determine the optimal cable force cable-stayed bridge . And analysis of the characteristics of the two bending energy as a state variable , the resulting cable force . Instability criterion ( 3 ) of the cable-stayed bridge first class , second class of stability problems , finite element analysis method described , discusses the substantial difference of the two types of stability problems , the stability of a cable-stayed bridge and evaluation indicators stayed bridge with the main tower , the overall stability of the calculation method . And later use the software to carry out the calculation of the cable-stayed bridge . ( 4) the use of space finite element software ansys established space finite element model , linear buckling analysis of a ground anchor cable-stayed bridge in three different stages , come to the stability of the various stages of the safety factor and instability type , evaluation bridge during the construction phase and the phase of the bridge have enough stable security and cable force initial stiffness and cable sag stability safety factor .

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CLC: > Transportation > Road transport > Bridges and Culverts > All kinds of bridges > Bridge: Structure > Cable-stayed bridge
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