Structural Performance and Cost Analysis of Multi-span Extradosed Cable-Stayed Bridge

Author:

Xiong Zhihua1,Hou Xu2,Zhu Houda1,Liu Yuqing3,Meng Yang1

Affiliation:

1. College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi, China

2. CCCC First Highway Consultants Co. Ltd., Xi’an, Shaanxi, China

3. Department of Bridge Engineering, Tongji University, Shanghai, China

Abstract

<p>To investigate the structural performance and economic applicability of multi-span extradosed cable-stayed bridge, a comparative scheme of composite beam with corrugated steel web was designed based on the Wangjia River Bridge, which was an extradosed cable-stayed bridge with prestressed concrete girder built in Shaanxi. Spatial finite element models of the whole bridge were established by CSIBridge for extradosed cable-stayed bridge with two different sections of girder. Considering the influence of p-Δ effect, the vertical and horizontal deformation and the governing sections of the two forms were analyzed and compared. The material consumption of steel, concrete and steel strand of the extradosed cable-stayed bridge with corrugated steel web was calculated. The material consumption of the two schemes was compared. The differences in structural performance and economic cost for the two structures were explored. It’s expected to provide a reference for the tender design of multi-span extradosed cable-stayed bridges with similar span length.</p>

Publisher

International Association for Bridge and Structural Engineering (IABSE)

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