植筋加固桥面板受力性能研究

发布时间：2018-05-21 11:55

本文选题：植筋 + 桥面板　；参考：《湖南科技大学》2015年硕士论文

【摘要】：化学植筋锚固技术是一种比较有效且方便、快捷、经济性好的加固技术。从起源到现在经过几十年的发展,在实际工程中的运用越来越广泛。特别是对于结构的加固拓宽、错埋漏埋等方面的问题表现得很好。早期的植筋加固研究多偏于植筋的拉拔试验研究,并取得了很多的研究成果。虽然也有对于植筋搭接及群锚固效应的研究,但是研究较少,相对的研究成果及相关理论不多。在桥梁上的研究多见于植筋搭接的梁的静力试验。而对于板式构件的研究很好。本文以实际工程为背景,进行试验研究及理论分析相结合,对植筋加固的桥面板的承载力特性进行了研究。主要内容有下面几方面:(1)通过对桥面板进行植筋加固,将搭接好的构件在实验室进行静力试验。在试验过程中,详细观察并记录所发生的试验现象及数据。以数据为依据,对试验中加固后的板的变形大小、破坏形态、极限承载力等进行分析,探讨出现这些现象的原因以及影响因素。(2)基于试验数据及参数,以ANSYS有限元分析软件为工具,在考虑了植筋粘结滑移关系的情况下对试验过程进行了真实的模拟。并把分析计算结果与试验结果进行对比,以此来验证试验的准确性。(3)依据试验及理论分析的数据,并结合其他人员的部分研究成果,引入一个挠度的增大系数,对植筋加固的板式构件提出较为有效的承载力及挠度的计算方法。以此计算方法得出的结果与试验结果较为吻合,说明了这种计算方法是有效可行的。
[Abstract]:Chemical reinforcement Anchorage technology is an effective, convenient, fast and economical reinforcement technology. After decades of development from its origin to now, it has been used more and more widely in practical engineering. Especially for the strengthening and widening of the structure, misburying and leakage problems are very good. The early research on reinforcement is mostly focused on the tensile test of the reinforcement, and a lot of research results have been obtained. Although there are some researches on the effect of lapping and group anchoring, there are few researches and few relative research results and related theories. The research on the bridge is often seen in the static test of the beam with the planting tendons. And the research of plate member is very good. In this paper, based on the actual engineering, the bearing capacity characteristics of the reinforced bridge slab are studied by combining the experimental research and theoretical analysis. The main contents are as follows: (1) by strengthening the bridge deck, the overlapped members are tested in the laboratory. During the test, the experimental phenomena and data are observed and recorded in detail. Based on the data, the deformation, failure form and ultimate bearing capacity of the strengthened plate in the test are analyzed, and the causes of these phenomena and the influencing factors are discussed. (2) based on the test data and parameters, With the ANSYS finite element analysis software as the tool, the bond-slip relationship of the tendons is taken into account in the real simulation of the test process. In order to verify the accuracy of the test, the accuracy of the test is verified by comparing the results of the analysis and calculation with those of the test. (3) according to the data of the experiment and the theoretical analysis, and combined with some of the research results of other people, a coefficient of increase of deflection is introduced. An effective method for calculating the bearing capacity and deflection of plate members strengthened with steel bars is proposed. The results obtained by this method are in good agreement with the experimental results, which shows that this method is effective and feasible.
【学位授予单位】：湖南科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U441;U445.72

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