地震作用下加芯混凝土橋墩的力學(xué)性能研究
本文選題:核心配筋混凝土柱 + 有限元分析 ; 參考:《長(zhǎng)安大學(xué)》2014年碩士論文
【摘要】:隨著橋梁結(jié)構(gòu)在現(xiàn)代經(jīng)濟(jì)生活中展示出越來越重要的位置,在地震發(fā)生時(shí),保證橋梁結(jié)構(gòu)的通暢成為目前亟待解決的問題。在地震作用下,,橋墩是橋梁結(jié)構(gòu)中最容易發(fā)生破壞的部分,探索新的、有較好抗震能力的橋墩形式成為目前國(guó)內(nèi)外學(xué)者的研究熱點(diǎn)。 核心配筋混凝土柱作為一種新型的組合結(jié)構(gòu),目前在建筑結(jié)構(gòu)中的應(yīng)用有了較大的進(jìn)展,取得了良好的效果,但是其在橋梁結(jié)構(gòu)中一直沒有得到應(yīng)用。鑒于上述原因,本文采用有限元分析軟件SeismoStruct對(duì)核心配筋混凝土橋墩進(jìn)行抗震性能的分析,探討加芯混凝土橋墩在實(shí)際工程中應(yīng)用的可行性。本文主要研究?jī)?nèi)容如下: (1)本文首先對(duì)SeismoStruct軟件進(jìn)行介紹,并且根據(jù)現(xiàn)有的研究成果對(duì)SeismoStruct軟件在鋼筋混凝土結(jié)構(gòu)抗震性能分析中的正確性進(jìn)行驗(yàn)證。 (2)本文對(duì)橋墩結(jié)構(gòu)中常用到的三種截面形式進(jìn)行分析,驗(yàn)證了加芯混凝土橋墩在抗震性能方面的優(yōu)越性。 (3)本文設(shè)計(jì)了多種不同參數(shù)的加芯混凝土橋墩,對(duì)影響橋墩抗震性能的主要參數(shù),如軸壓比、長(zhǎng)細(xì)比、縱筋配筋率、芯柱面積、芯柱配箍率等對(duì)加芯混凝土橋墩抗震性能的影響進(jìn)行對(duì)比分析。 (4)本文不僅對(duì)各種參數(shù)對(duì)加芯混凝土橋墩的抗震滯回性能的影響進(jìn)行了分析,還對(duì)矩形截面進(jìn)行了配筋布置對(duì)橋墩抗震滯回性能影響的單獨(dú)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.
【學(xué)位授予單位】:長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:U443.22
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