预应力曲线箱梁和异形箱梁的研究

Research on Prestressed Curved Box Beam and Special Box Beam

近年来 ,国内外学者对曲线箱梁和异形箱梁的静力分析理论和计算方法作过大量的研究 ,但这些理论和方法在某种程度上都存在着一定的局限性 ,特别是在实际设计工作中 ,运用起来不能得心应手。为此本文在综合前人已取得经验下 ,针对桥梁结构设计中分析曲线箱梁、异形箱梁 ,经常遇到的难题进行了研究 ,建立一个较为完善的理论和方法 ,编制了等参元空间分析程序。在实际工程中进行实桥试验 ,验证了本文理论和方法的正确性。本文的研究工作更准确描述了箱梁的荷载响应 ,为设计人员提供直观的设计依据。对曲线箱梁和异形箱梁受力特性有了更一步的理解 。

In recent years the scholars at home and abroad make a large amount of researches on the static analyzing theory and the calculation method of curved box beam and special box beam. But the theory and method have some limitations to a certain degree, specially in the actual design work it can not be applied with facility. Therefore, the paper researches on the difficult problems in analyzing curved box beam and special box beam in the bridge structural design under the experience summed up by our predecessors. It establishes the more perfect theory and method and compiles the analysis progress of equivalence parameter element space analysis program. In the actual project it makes test of the actual bridge and test, it also tests and verifies the correctness of the theory and method in the paper. The research work of the paper describes correctly the loading response of box beam that provides the designers with object design basis. It knew the forced characteristics of curved box beam and special box beam. And it puts forward new opinions.