低填方荷载条件下钢波纹板拱桥力学性能研究
发布时间：2018-07-26 06:57
【摘要】：基于钢波纹板结构作为桥涵在公路工程中的应用需要，，本文依托现场实际工程，对低填方条件下钢波纹板拱桥的应用及其力学性能进行现场试验及仿真模拟分析，重点进行荷载条件下的结构特性分析，主要研究内容如下： 1、结合国内外现行设计、施工规范、资料，对应用于公路工程中的钢波纹板结构的分类、使用条件、要求等进行总结、归纳，提出其适用性。 2、依托一道填土厚度1.2m的3孔4m跨径、中心角为135°的钢波纹板圆弧拱桥，对其在车辆荷载作用下的管壁应力、应变进行测试、分析。 3、利用有限元软件ANSYS、路面结构计算程序BISAR和HPDS分别对钢波纹板拱桥和路面结构在车辆荷载作用下的力学性能进行仿真模拟计算，研究结构的受力和变形特征，探索钢波纹板结构与路面结构的变形协同性。 4、对车辆荷载作用下的钢波纹板拱桥的动挠度进行测试，计算其冲击系数。 5、基于有限元结构设计方法的基础上，结合国内外现有的钢波纹板桥涵结构计算方法，对低覆土条件下多孔拱桥结构的力学计算结果进行对比，提出适合本文研究对象的设计控制要点。 论文研究成果可有助于解决低填方条件下多孔钢波纹板桥涵应用的技术难题，具有重要的理论与实际意义。
[Abstract]:Based on the application needs of steel corrugated slab structure as bridge and culvert in highway engineering, this paper, relying on the field engineering, carries out field test and simulation analysis on the application and mechanical performance of steel corrugated arch bridge under low fill condition. The main research contents are as follows: 1. Combining with the current design, construction code and data at home and abroad, the classification and application conditions of steel corrugated plate structures used in highway engineering are analyzed. The requirements are summarized and summarized, and its applicability is put forward. 2The stress and strain of the pipe wall under the action of vehicle load are tested by relying on a steel corrugated plate arc arch bridge with 3 holes and 4 m span with 1.2m thickness and 135 掳center angle. 3. The mechanical properties of steel corrugated arch bridge and pavement structure under vehicle load are simulated and calculated by finite element software ANSYS, pavement structure calculation program BISAR and HPDS, respectively, and the stress and deformation characteristics of the structure are studied. The deformation synergy between steel corrugated plate structure and pavement structure is explored. 4. The dynamic deflection of steel corrugated plate arch bridge under vehicle load is tested. Based on the finite element structural design method and the existing steel corrugated plate bridge and culvert structure at home and abroad, the mechanical calculation results of the porous arch bridge structure under low overlying soil conditions are compared. The key points of design control suitable for the research object of this paper are put forward. The research results in this paper can help to solve the technical problems in the application of porous steel corrugated slab bridges and culverts under low fill conditions, and have important theoretical and practical significance.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.22;U441
本文编号：2145216
[Abstract]:Based on the application needs of steel corrugated slab structure as bridge and culvert in highway engineering, this paper, relying on the field engineering, carries out field test and simulation analysis on the application and mechanical performance of steel corrugated arch bridge under low fill condition. The main research contents are as follows: 1. Combining with the current design, construction code and data at home and abroad, the classification and application conditions of steel corrugated plate structures used in highway engineering are analyzed. The requirements are summarized and summarized, and its applicability is put forward. 2The stress and strain of the pipe wall under the action of vehicle load are tested by relying on a steel corrugated plate arc arch bridge with 3 holes and 4 m span with 1.2m thickness and 135 掳center angle. 3. The mechanical properties of steel corrugated arch bridge and pavement structure under vehicle load are simulated and calculated by finite element software ANSYS, pavement structure calculation program BISAR and HPDS, respectively, and the stress and deformation characteristics of the structure are studied. The deformation synergy between steel corrugated plate structure and pavement structure is explored. 4. The dynamic deflection of steel corrugated plate arch bridge under vehicle load is tested. Based on the finite element structural design method and the existing steel corrugated plate bridge and culvert structure at home and abroad, the mechanical calculation results of the porous arch bridge structure under low overlying soil conditions are compared. The key points of design control suitable for the research object of this paper are put forward. The research results in this paper can help to solve the technical problems in the application of porous steel corrugated slab bridges and culverts under low fill conditions, and have important theoretical and practical significance.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U448.22;U441
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