矮塔斜拉桥的索力优化

发布时间：2018-01-12 03:20

本文关键词：矮塔斜拉桥的索力优化　出处：《安徽理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：矮塔斜拉桥是近30多年发展起来的一种新型的桥梁结构,但是其在材料特性、结构形式和理论研究等各方面的发展都日趋完善。本文以新洋港特大桥为工程背景,分析了合理成桥索力及合理施工状态的确定方法。主要研究内容如下:(1)使用有限元软件ANSYS建立斜拉桥的模型,采用零阶方法对新洋港特大桥的成桥索力进行优化。优化前后主梁和主塔的内力及线形结果表明:采用零阶方法对矮塔斜拉桥进行合理成桥索力的确定是可行的;(2)使用建立的斜拉桥的模型,采用无应力状态控制法来确定合理施工状态,得到了各个施工阶段的斜拉桥的内力状态。与成桥目标状态相比,实际成桥状态下的主梁及主塔的内力状态相差较小,均在容许范围之内,所以采用本方法来确定新洋港特大桥的合理施工状态是合理、可行的。
[Abstract]:Extradosed cable-stayed bridge is a new bridge structure developed over the past 30 years, but the material properties, the development of all aspects of the structure and theoretical research are maturing. The Xinyang harbor bridge as project background, analyzed the reasonable determination method of cable force and the reasonable construction state. The main contents are as follows: (1) using the finite element software ANSYS to establish the model of cable-stayed bridge, bridge cable force using the zero order method of Xinyang harbor bridge. To optimize the internal force and alignment results before and after optimization of the main girder and the main tower shows that the zero order method of cable-stayed bridge are reasonable to determine the cable force is feasible; (2) the use of the cable-stayed bridge model is established, the state control method to determine the rational construction state of stress, the stress state of each construction stage of cable-stayed bridge. Compared with the bridge into the target state, the actual bridge. The internal force state of main girder under the state and the main tower are small, are within the allowable range, so the use of this method to determine the rational construction state of Xinyang harbor bridge is reasonable and feasible.

【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U448.27

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