三塔斜拉桥静力性能研究

【作者】 张宝胜；

【导师】 徐岳；

【作者基本信息】 长安大学 ， 桥梁与隧道工程， 2001， 硕士

【摘要】 本文以岳阳洞庭湖大桥模型试验为工程背景进行三塔斜拉桥静力性能的研究。通过对三塔斜拉桥的多方案比较，合理选定了桥梁各组成部分的结构构造，确定了最优的桥型方案。采用弯曲能量最小法，提出了假载调整弯矩法和正装迭代法来确定合理成桥状态及合理施工状态，探讨了塔的刚度、主梁刚度、拉索索力等主要参数对全桥力学行为的影响，分析了辅助墩的作用以及洞庭湖大桥的变形、内力和应力。采用刚度相似的原则设计制做了1/30的缩尺模型，并进行了模型试验，从而验证了相似关系和模型设计计算理论，为洞庭湖大桥实桥的设计与施工提供试验依据。更多还原

【Abstract】 In this paper, a study on the static performance of the three towers cablestayed bridge is carried out based on the model experiment for Yue Yang Dong Ting Lake bridge. After the comparison among several schemes of three towers cable-stayed bridge, it selected the rational structure sizes of the bridge component parts and the optimal bridge type project. Using the minimum bending energy method, this paper gives the assumed load method to adjust bending moment and the forward-iteration to define the rational completed bridge state and constructing state, meanwhile, it inquires the influences to the influences to the whole bridge force characteristics caused by the parameters such as rigidity of tower, stitThess of girder and the size of cable. It also analyses the function of auxiliary piers and the deformation, inner force and stress of the Dong Ting Lake bridge. The 1/30 scale model is designed and made based on the stiffness conformity principle and the model experiment is done. All these help to test and terrify the conformity reaction and the model design and calculating theory, giving experimental basis for design and construction of the actual Dong Ting Lake bridge.更多还原