MODEL ANALYSIS OF LIFE CYCLE PRESTRESS LOSSES IN CABLE-SUPPORTED STRUCTURES

Chen Zhihua; Wang Xiaoxiang; Liu Hongbo; Yan Renzhang; Yang Shuheng

doi:10.13204/j.gyjz201508005

Volume 45 Issue 8

Nov. 2015

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Wang Xinling, Kang Xiandong, Li Ke, Huang Weidong. FATIGUE DAMAGE MECHANISM OF HRBF500 RC BEAMS[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(11): 45-48. doi: 10.13204/j.gyjz201311011

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Chen Zhihua, Wang Xiaoxiang, Liu Hongbo, Yan Renzhang, Yang Shuheng. MODEL ANALYSIS OF LIFE CYCLE PRESTRESS LOSSES IN CABLE-SUPPORTED STRUCTURES[J]. INDUSTRIAL CONSTRUCTION, 2015, 45(8): 25-29. doi: 10.13204/j.gyjz201508005

Wang Xinling, Kang Xiandong, Li Ke, Huang Weidong. FATIGUE DAMAGE MECHANISM OF HRBF500 RC BEAMS[J]. INDUSTRIAL CONSTRUCTION, 2013, 43(11): 45-48. doi: 10.13204/j.gyjz201311011

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MODEL ANALYSIS OF LIFE CYCLE PRESTRESS LOSSES IN CABLE-SUPPORTED STRUCTURES

doi: 10.13204/j.gyjz201508005

Publish Date: 2015-08-20

Abstract

Abstract

For cable-supported structures，prestress loss of cables has great influence on the structural bearing capacity and safety of the cable-supported structures． Factors of life cycle prestress losses in cable-supported structures were analyzed，including anchorage loss，batched tension loss，friction loss，relaxation loss，creep loss and temperature loss． Also，the calculation methods and compensation measures were stated in this paper． Prestress loss in the installation phase has a short-term effect，while prestress loss with time-varying effect in the normal usage phase has a long-term effect． The models of prestress losses in the two phases were established，and it was known with analysis of examples that the second sort of prestress loss should be considered in the design phase; and the first sort of prestress loss should be considered in the construction phase．
- cable-supported structures,
- life cycle,
- cable,
- prestress loss

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