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| Research on a Calculation Method for Free Cable Alignment in Self-Anchored Suspension Bridges |
| WEI Jia-le |
| Shaanxi Tongyu Research Institute of Highway Co., Ltd., Xi'an Shaanxi 710118, China |
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Abstract To ensure the alignment of free cables in self-anchored suspension bridges, a control strategy based on finite element (FE) methods was analyzed. FE methods for construction control were presented in this paper by applying backward and forward methods and unstressed state methods. Accurate FE simulation methods for sensitive regions (i.e., the tangent point between the cable and saddle as well as the state of the splay cable) were obtained, and the precise alignment of free cables was also calculated. The cable strands were also revised piecewise based on their characteristics after calculating the unstressed length of the main cable. Practical FE methods for simulating the pre-offsetting of the saddle and clip in free cable states were also proposed. The alignment of the free cable and other relevant parameters of self-anchored suspension bridges can be accurately computed using these proposed methods, which also generate superior controlling results in practical engineering.
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Received: 24 February 2016
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Corresponding Authors:
WEI Jia-le
E-mail: 254393279@qq.com
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2017, Vol. 11 
