|Table of Contents|

Simulation Analysis of Rib Disassembly of RC Multi-span Arch Bridge(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2009年04期
Page:
114-119
Research Field:
Publishing date:
2009-12-20

Info

Title:
Simulation Analysis of Rib Disassembly of RC Multi-span Arch Bridge
Author(s):
LI Ya-dong1;  YAO Chang-rong1;  SHI Cheng2
1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. Qingdao Municipal Engineering Design & Research Institute Co., Ltd., Qingdao 266071, Shandong, China
Keywords:
RC multi-span arch bridge;  rib;  disassembly;  simulation analysis;  environmental factor;  impact influence
PACS:
U445
DOI:
-
Abstract:
The rib disassembly of a RC multiple arch bridge with five spans was simulated using ANSYS finite element software. Defining the cable forces of gantry crane and support forces of jacks as design variables, adopting the rib stress on cross-section and horizontal thrusts at piers' top as control variables, and taking the minimum stress of rib on cross-section as objective function, the technical parameters needed in disassembly construction control were determined by using optimization analysis methods in ANSYS. The impact and environmental factors in disassembly were taken into account as well. The results show that through combining action of gantry crane and jacks, the rib's stress, deflection deformation and the horizontal thrusts at piers' top were quite small, which testified the structure was safe during the rib disassembly. The stress of rib and the support forces of jacks are obviously influenced by environmental temperature, and the effective technical measures should be taken to decrease the negative impact of temperature on structure.

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Last Update: 2009-12-20