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Disturbance on the arch bridge carrying capacity in service impact study

Author: WangShuang
Tutor: HeShuanHai
School: Chang'an University
Course: Bridge and Tunnel Engineering
Keywords: Arch bridge Finite element method Carrying capacity Arch disturbance Monitor
CLC: U448.22
Type: Master's thesis
Year: 2005
Downloads: 121
Quote: 3
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Abstract


With the continuous development of China's national economy , the bearing capacity of the bridge structure in service engineering and academic status to become one of the topics of concern . Thus, in the carrying capacity of existing bridges to study in China has profound theoretical and practical significance. This paper studies the arch of the foot arch disturbance on the carrying capacity of in-service impact . The author Majiagou Bridge reconstruction project as the background, made ??in the arch of the foot arch disturbance occurs in the case , bearing capacity analysis methods : 1. Calculate operational loads arch stress , the use of linear elastic theory is feasible. When analyzing the bearing capacity of arch , only consider the nonlinear effects in order to obtain accurate results. (2) the use of large-scale finite element analysis software ANSYS 8.1 release builds bridge spatial entity model to simulate the transformation of the construction of filling station after the digging process . And using the space model , comparing the two construction program for the safe and efficient construction provides a theoretical basis . Meanwhile got arch displacement process, the control section of the arch arch foot sections , as well as the variation of stress . 3 Use the bridge -specific finite element program to establish plane frame finite element model , the calculated limit of the bridge can withstand horizontal displacement of the arch , which has for the future of engineering practice guidance . Meanwhile over in the construction of the bridge and after the completion of the carrying capacity checking, got Majiagou bridge and after the completion of the entire construction process safe and reliable conclusions. 4 The plane model calculations , spatial model calculations and monitoring data measured data were compared to verify the reasonableness of both methods . The use of space model and the method of combining plane model for other projects has certain reference value. Model calculations and field data measured data combined in order to determine the carrying capacity of the bridge method also has a high promotional value.

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