【摘要】 本文将预应力束和混凝土梁视为单独构件,组成索梁结构体系,两者靠其间挤压力维持协同工作。分析时考虑了预应力束与孔道截面之间尺寸的非吻合性。所提出的增量迭代理论,在通常计算结果的基础上,经几轮简单计算就能获得更接近实际的结果。更多还原

【Abstract】 This paper introduces a new concept in analyzing post-tensioned prestressed concrete flexural member, i.e. member taken as a cable-beam structure system. In which, both the tendon and the concrete beam are regarded as independent elements respectively. Besides the effects of compressed force between tendon and concrete as well as the size difference between cross section of tendon and that of duct are considered in the calculation. Then an incremental-iterative theory is applied in order to simplify the complicated computation in differential equation analysis, in which the procedure is composed of incremental process and iterative process. The analyzing results show that the incremental-iterative approach is simple and accurate enough, and the proposed method is effective for analyzing the post-tensioned prestressed concrete members in practice.更多还原