转体施工的公路T型刚构桥梁转动结构设计

Design of the Rotational Struction of Highway T-Shape Rigid Frame Brige Constructed with the Method of Slewing

研究目的:对张石高速公路T型刚构转动结构设计的关键技术进行研究,解决水平转体球铰转盘的设计、球铰的加工及施工工艺等问题。研究方法:结合材料力学、弹性力学的计算理论,初步计算结构在静止状态下接触面上的受力情况;然后采用大型通用空间有限元程序ANSYS进行动力状态下仿真分析计算。研究结果:通过对公路T型刚构转动结构应力、应变、稳定等的研究,总结出一套完整的转动结构设计需检算的主要内容、步骤及计算方法。研究结论:在转动结构设计过程中,要根据转体结构自身特点,选择转盘形式及转盘的尺寸;用结构分析程序进行计算分析,解决转动结构转盘接触面上的应力、应变问题,据此确定经济合理的转动结构。

Research purposes： Research on the key technology of the rotational structure design of T - shape rigid frame bridge on Zhangshi expressway has been conducted. The problems on design, manufacture and construction techniques of the spherical horizontal - rotational structure have been solved. Research methods： Combining with the theory of materials mechanics and elasticity machanics, the forcing condition on the contacting surface under the stationary condition should be calculated out initiatively. Then calculation imitating real condition has been done with the large general space finite element programme. Research results：According to the research of rigid frame＇ s stress, strain and stability, a whole set of method of design and calculate have been summarized. The main calculation method and content of the rotational structure of highway T- shape rigid frame bridge have been showed in this paper, too. Research conclusions：During the rotational structure design, shape and dimension of the rotational plate should be choosen according to the character of the rotational structure. The problems of the stress and strain on the connecting surface of rotational plate should be solved by calculation and analysis with the structure analysis programme, then the economic and reasonable rotational structured should be worked out.