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。 In this paper, prestressed beams and concrete beams are regarded as separate components to form a cable-beam structural system, and the two maintain cooperating work by their compression forces. The non-coincidence of the dimensions between the pre-stressed beam and the cross-section of the cell was taken into account during the analysis. The incremental iterative theory proposed can obtain more realistic results after several rounds of simple calculations based on the usual calculation results.