宽幅波形钢腹板组合箱梁桥横向受力研究

发布时间：2018-03-12 08:29

本文选题：波纹钢腹板　切入点：框架法　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：近年来,波形钢腹板预应力组合箱梁桥作为一种新型的桥梁结构,在我国发展迅速,其已达30多座,然而关于宽幅波形钢腹板箱梁横向内力的研究较少亦或是没有形成系统的理论或规范。本文在总结前人研究成果基础上,通过试验研究和有限元分析,系统地研究了宽幅单箱单室、单箱多室波纹钢腹板组合箱梁桥的横向内力分布规律。本文受国家自然科学基金资助项目(51308053)资助,针对宽幅波纹钢腹板组合箱梁的横向受力进行研究,主要完成了以下工作：1)分析了在不同荷载工况下,单箱单室、双室、三室截面缩尺试验模型的横向内力分布,并与有限元进行了对比。2)研究波形钢板厚度和高度、钢腹板波形形状等参数对顶板横向弯曲应力和变形的影响,并分析出主要影响参数,做进一步详细研究；研究荷载横向作用位置对双室、三室、四室截面横向内力的影响,并进一步分析了桥面板纵横向宽度、荷载作用位置对三室截面有效分布宽度的影响。3)通过在不同纵横向跨度、箱室下规范和ANSYS结果的对比,总结出了对于单室截面和多室截面的横向内力的分布规律。4)针对于规范计算结果和ANSYS结果的差异,本文提出了一种有效分布宽度的修正方法,并给出了计算公式及表格。
[Abstract]:In recent years, as a new type of bridge structure, prestressed composite box girder bridge with corrugated steel webs has developed rapidly in China, and has reached more than 30 bridges. However, there are few or no systematic theories or norms on the transverse internal forces of the wide-width corrugated steel web box girders. Based on the results of previous studies, this paper is based on the experimental research and finite element analysis. In this paper, the transverse internal force distribution of wide-width single-chamber, single-chamber, single-chamber corrugated steel webs composite box girder bridge is systematically studied. This paper is supported by the National Natural Science Foundation of China (project No. 51308053). The transverse force distribution of single chamber, double chamber and three compartment cross section scale test model of single box, double chamber and three room under different load conditions is studied. The main work is as follows: 1) in this paper, the transverse internal force distribution of single box, double chamber and three compartment cross section scale test model is analyzed. The influence of the thickness and height of corrugated steel plate and the shape of steel webs on the transverse bending stress and deformation of roof is studied, and the main parameters are analyzed and studied in detail. The influence of transverse load position on transverse internal force of two-chamber, three-chamber and four-compartment cross-section is studied, and the longitudinal and transverse width of deck slab and the effect of load position on the effective distribution width of three-compartment cross-section are further analyzed. Comparing the specification under the box with the ANSYS results, the distribution law of transverse internal force for the single chamber section and the multi-chamber section is summarized. 4) in view of the difference between the code calculation results and the ANSYS results, a method of modifying the effective distribution width is proposed. The formulas and tables are given.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U441;U448.213

【相似文献】