CALCULATION OF ELASTIC STRESS INCREMENT OF EXTERNAL TENDONS IN SIMPLY SUPPORTED STEEL-CONCRETE COMPOSITE BEAMS

摘要：

In externally prestressed steel-concrete composite beams, the deflection at the serviceability state is related to the elastic tendon stress increment. The tendon profile and the slip effect at the slab-steel interface have a significant influence on the elastic incremental tendon stress.In this paper, on the basis of the strain energy principle, a formula for calculating the elastic tendon stress increment of simply supported composite beams with a draped tendon profile is derived by considering the slip at the stab-steel interface and the compatibility of the tendons and the composite beam at the anchorage points. The calculated and measured values are in close agreement.

关键词： External tendons Composite beams Tendon stress increment Slip

作者: Li-Li Bai Wei-Chen Xue

作者单位: College of Building Engineering, Tongji University, Shanghai 200092, P.R. China

会议类型: 国际会议

会议名称: 第十届国际结构工程青年学者研讨会(The Tenth International Symposium on Structural Engineering for Young Experts)

会议地点: 长沙

会议语种:英文

页码: 805-809

在线出版日期: 2008-10-19（万方平台首次上网日期，不代表论文的发表时间）