Method of construction error control for cantilever-casting cable-stayed bridge

WANG Jing-feng; XU Xing; XIANG Yi-qiang

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WANG Jing-feng, XU Xing, XIANG Yi-qiang. Method of construction error control for cantilever-casting cable-stayed bridge[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 61-67.

Citation:

WANG Jing-feng, XU Xing, XIANG Yi-qiang. Method of construction error control for cantilever-casting cable-stayed bridge[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 61-67.

WANG Jing-feng, XU Xing, XIANG Yi-qiang. Method of construction error control for cantilever-casting cable-stayed bridge[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 61-67.

Citation:

WANG Jing-feng, XU Xing, XIANG Yi-qiang. Method of construction error control for cantilever-casting cable-stayed bridge[J]. Journal of Traffic and Transportation Engineering, 2008, 8(4): 61-67.

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Method of construction error control for cantilever-casting cable-stayed bridge

School of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, Zhejiang, China

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Author Bio:
WANG Jin-feng(1976-), male, associate professor, PhD, +86-571-87951804, wangjfcong@126.com
Received Date: 2008-01-11
Publish Date: 2008-08-25

Abstract

Abstract

During the cantilever-casting construction of prestressed concrete(PC) cable-stayed bridge, in order to reduce the errors of cable tension and line shape, the error cause and present situation of control means were analyzed, and the control methods of model error and cantilever-casting simulation error were discussed.With the combination of 3D isoparametric element and shell element, degenerated solid element was proposed for the spatial analysis of complex PC bridge, and discrete bar model was set up.According to the deformation compatibility condition of traction cable's anchorage, the increment of cable tension during casting concrete was computed, and the calculation formula of traveler's front level was educed.Application result indicates that the control precision of trailing cable tension is within 3%, the control precision of final cable tension is within 5%, and the error of traveler's front level is within 1 cm.Therefore, the cable tension and line shape of PC cable-stayed bridge under all construction conditions can be well predicted by the proposed method.
- bridge engineering,
- concrete cable-stayed bridge,
- error control,
- cantilever casting,
- construction error

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References(13)

References

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