Reinforced Concrete Complex Arch Structure Analysis

Compound arch bridge is a structure with an arch on the main arch. Taking Yi Chang CaiJiaHe Bridge as the project background, a rounded analysis of compound arch bridge is carried out in this paper. The thrust at spring of spandrel arch makes it different between compound arch bridge and ordinary arch bridge. A detailed analysis of the combination operation of the spandrel construction, the endogen force generated by vehicle load and the dynamic property of the compound arch bridge is carried out in this article. In addition all the analysis is calculated by space finite element program. CaiJiaHe Bridge is a continuous arch bridge of a unite with three span, the influence of multiple-arch is considered in calculation. First, the endogen force of the compound arch bridge generated by dead load is calculated, and the influence of job practice is full considered when calculating the combination operation of the construction upon the main arch. Then, the endogen force generated by vehicle load is calculated, and the comparison of endogen force between compound arch bridge and ordinary arch bridge is also carried out. Last, the dynamic analysis of compound arch bridge is carried out. The evidence for calculating compound arch bridge is offered throng the structural analysis of compound arch bridge.