Sensitivity Parameter Analysis and Accurately Calculation Method of Cables Unstressed Length for Cable-Stayed Bridges

Abstract:

The cables unstressed length is an important key parameter of design and construction control. In order to accurately calculate cables unstressed length for cable-stayed bridges, the longer principle for cables is avoided at current. The various factors were fully considered which affect cables unstressed length, and the sensitivity parameters of various factors were analyzed. The sensitivity factors were identified, and not sensitivity factors were ignored. It is sensitivity factors that towers deviation in advance, towers dynamic displacement, girders pre-camber, girders dynamic displacement, temperature difference, cables elastic modulus error, the load values with calculation of cables for elastic elongation. The accurately calculation method of cables unstressed length was proposed, which was based on sensitive factors. The method of cables unstressed length is more reasonable and accurate.

• Periodical: Applied Mechanics and Materials (Volumes 587-589)
• Pages: 1622-1626
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.587-589.1622
• Online since: July 2014
• Authors: Jun Tian, Xiao Wei Wu, Yan Fei Hu
• Keywords: Cables Unstressed Length, Cable-Stayed Bridge, Calculation Method, Sensitivity Parameter, Stay Cables

References

[1] C Du, M F Fei and S Z Qiang: Journal of Chongqing Jiaotong University, Vol. 20 (2001), pp.1-3. (In Chinese).

[2] X D Shao, X Zhang, and L F Li: Central South Highway Engineering Vol. 30 (2005), pp.33-35. (In Chinese).

[3] Z A Zhang: Technology of Highway and Transport, No. 4 (2002), pp.40-42. (In Chinese).

[4] JTJ 027-96, Design Specification of Highway Cable-stayed Bridge (on trial). (China Communications Press, Beijing 1996). (In Chinese).

[5] X W Wu, Z Y Quan and J Tian: Shanxi Architecture, Vol. 36 (2010), pp.314-316. (In Chinese).