地震作用下加芯混凝土桥墩的力学性能研究

发布时间：2018-04-24 11:07

本文选题：核心配筋混凝土柱 + 有限元分析　；参考：《长安大学》2014年硕士论文

【摘要】：随着桥梁结构在现代经济生活中展示出越来越重要的位置，在地震发生时，保证桥梁结构的通畅成为目前亟待解决的问题。在地震作用下，，桥墩是桥梁结构中最容易发生破坏的部分，探索新的、有较好抗震能力的桥墩形式成为目前国内外学者的研究热点。核心配筋混凝土柱作为一种新型的组合结构，目前在建筑结构中的应用有了较大的进展，取得了良好的效果，但是其在桥梁结构中一直没有得到应用。鉴于上述原因，本文采用有限元分析软件SeismoStruct对核心配筋混凝土桥墩进行抗震性能的分析，探讨加芯混凝土桥墩在实际工程中应用的可行性。本文主要研究内容如下：（1）本文首先对SeismoStruct软件进行介绍，并且根据现有的研究成果对SeismoStruct软件在钢筋混凝土结构抗震性能分析中的正确性进行验证。（2）本文对桥墩结构中常用到的三种截面形式进行分析，验证了加芯混凝土桥墩在抗震性能方面的优越性。（3）本文设计了多种不同参数的加芯混凝土桥墩，对影响桥墩抗震性能的主要参数，如轴压比、长细比、纵筋配筋率、芯柱面积、芯柱配箍率等对加芯混凝土桥墩抗震性能的影响进行对比分析。（4）本文不仅对各种参数对加芯混凝土桥墩的抗震滞回性能的影响进行了分析，还对矩形截面进行了配筋布置对桥墩抗震滞回性能影响的单独分析。
[Abstract]:With the bridge structure showing more and more important position in the modern economic life, it becomes an urgent problem to ensure the bridge structure unobstructed when the earthquake occurs. Under the action of earthquake, the pier is the most vulnerable part of the bridge structure, exploring new pier forms with good seismic capacity has become the research hotspot of scholars at home and abroad. As a new type of composite structure, the application of core reinforced concrete column in building structure has made great progress and achieved good results, but it has not been applied in bridge structure. In view of the above reasons, this paper uses the finite element analysis software SeismoStruct to analyze the seismic behavior of the core reinforced concrete pier, and discusses the feasibility of the application of the core reinforced concrete pier in the practical engineering. The main contents of this paper are as follows: Firstly, the SeismoStruct software is introduced in this paper, and the correctness of SeismoStruct software in seismic performance analysis of reinforced concrete structures is verified according to the existing research results. In this paper, three kinds of cross-section used in pier structure are analyzed, and the superiority of coring concrete pier in seismic performance is verified. In this paper, a variety of coring concrete piers with different parameters are designed. The main parameters that affect the seismic performance of the pier, such as axial compression ratio, aspect ratio, reinforcement ratio of longitudinal reinforcement, core column area, are studied. The effect of core-column hoop ratio on seismic behavior of concrete pier is compared and analyzed. This paper not only analyzes the influence of various parameters on seismic hysteretic behavior of concrete pier, but also analyzes the effect of rectangular section reinforcement arrangement on seismic hysteretic performance of pier.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U443.22

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