Effect of Concrete Creep on the displacement of single tower single cable plane Extradosed Cable-stayed Bridge

3rd International Conference on Energy Equipment Science and Engineering

Shi, Jing-Xian^1 ; Ran, Zhi-Hong^2

Oxbridge College, Kunming University of Science and Technology, KunMing

650106, China^1

Yunnan University, KunMing

650106, China^2

关键词: Ambient humidity;    Calculation models;    Concrete creep;    Continuous rigid frame bridges;    Creep calculations;    Dry environment;    Extradosed cable-stayed bridges;    Force component;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/128/1/012091/pdf
DOI  :  10.1088/1755-1315/128/1/012091

来源: IOP

【 摘 要 】

Extradossed Cable-stayed Bridge is both cable-stayed Bridge and Continuous rigid frame bridge mechanics feature, Beam is the main force components, cable is supplement.This article combined with a single tower and single cable plane Extradossed cable-stayed bridge in Yunnan, use different creep calculation models and analysis deflection caused by creep effects. The results showing that deflection caused by creep effect is smaller than the same span continuous rigid frame bridge, the value is about 2cm. On the other hand the deflection is increasing with ambient humidity decreases, therefore in the dry environment the calculation model is relatively large in the pre-camber. In the choice of RC creep model is significant in the dry areas.