發(fā)布時(shí)間：2018-02-09 05:01

  本文關(guān)鍵詞： 裝配式 節(jié)點(diǎn) 低周反復(fù)加載 抗震性能 恢復(fù)力模型　出處：《西安建筑科技大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來(lái),在我國(guó)大部分地區(qū)裝配式混凝土結(jié)構(gòu)快速發(fā)展,建筑工業(yè)化、住宅產(chǎn)業(yè)化成為建筑行業(yè)的熱點(diǎn)話題,建造方式的改革和創(chuàng)新是建筑產(chǎn)業(yè)的發(fā)展趨勢(shì),這將極大提高勞動(dòng)生產(chǎn)率,節(jié)約社會(huì)資源。裝配式框架結(jié)構(gòu)中,梁-柱節(jié)點(diǎn)作為重要的傳力紐帶,其抗震性能和整體性對(duì)于結(jié)構(gòu)的安全使用尤為關(guān)鍵,同時(shí)節(jié)點(diǎn)現(xiàn)場(chǎng)施工的難易程度也決定了該形式節(jié)點(diǎn)的推廣應(yīng)用程度。本文將鋼結(jié)構(gòu)中常用的端板螺栓節(jié)點(diǎn)引入混凝土結(jié)構(gòu)中,采用高強(qiáng)螺栓將端板與核心區(qū)設(shè)置鋼板箍混凝土柱連接在一起,梁縱向普通鋼筋采用新型墩頭焊接形式與端板連接,梁預(yù)應(yīng)力鋼筋采用螺帽進(jìn)行錨固,從而形成一種新型的裝配節(jié)點(diǎn)形式。本文在以往裝配式節(jié)點(diǎn)的基礎(chǔ)上,對(duì)新型裝配式節(jié)點(diǎn)形式的受力和抗震性能進(jìn)行試驗(yàn)研究。本文共設(shè)計(jì)6個(gè)新型裝配式預(yù)應(yīng)力中間節(jié)點(diǎn)試件,并制作1個(gè)現(xiàn)澆十字形節(jié)點(diǎn)試件作為對(duì)比,進(jìn)行低周反復(fù)水平荷載加載試驗(yàn),對(duì)節(jié)點(diǎn)受力、梁端抗剪承載力和抗彎承載力進(jìn)行分析,同時(shí)重點(diǎn)分析了試件的強(qiáng)度退化、剛度退化、延性和耗能能力,試驗(yàn)結(jié)果表明,密配螺旋箍筋有利于提高梁抗剪和抗彎能力,試件的荷載-位移滯回曲線飽滿,具有良好的延性和耗能能力,抗震性能良好。本文依據(jù)裝配式預(yù)應(yīng)力節(jié)點(diǎn)低周反復(fù)荷載試驗(yàn)結(jié)果,建立三線型恢復(fù)力模型,并給出了相應(yīng)階段的計(jì)算公式,同時(shí)通過(guò)回歸分析得到不同階段加載、卸載剛度隨著位移幅值增加的剛度退化公式,并與試驗(yàn)結(jié)果進(jìn)行對(duì)比,二者吻合度較高,所提恢復(fù)力模型可用于該類裝配式結(jié)構(gòu)彈塑性地震反應(yīng)分析和抗震設(shè)計(jì)。
[Abstract]:In recent years, with the rapid development of prefabricated concrete structures in most areas of China, the industrialization of buildings and housing has become a hot topic in the construction industry. The reform and innovation of construction methods is the development trend of the construction industry. This will greatly improve labor productivity and save social resources. In prefabricated frame structures, the beam-column connection is an important force transmission link, and its seismic performance and integrity are particularly critical for the safe use of the structure. At the same time, the degree of difficulty in joint construction also determines the degree of popularization and application of this form of joint. In this paper, the common end-plate bolt joints in steel structure are introduced into concrete structure. High strength bolts are used to connect the end plate with the steel plate hoop concrete column in the core area. The longitudinal common steel bar is welded with the end plate by a new type of pier head, and the prestressed steel bar of the beam is anchored by a nut. Therefore, a new type of assembly joint is formed. In this paper, six new prestressing intermediate joint specimens are designed, and a cast-in-place cross joint specimen is made as a comparison. The low cycle repeated horizontal load loading test was carried out to analyze the joint load, the shear capacity of beam end and the flexural bearing capacity. At the same time, the strength degradation, stiffness degradation, ductility and energy dissipation capacity of the specimens were analyzed. The test results show that the strength degradation, stiffness degradation, ductility and energy dissipation capacity of the specimens are analyzed. The dense helical stirrups are helpful to improve the shear and bending resistance of the beams. The load-displacement hysteretic curves of the specimens are full and have good ductility and energy dissipation capacity. The seismic behavior is good. Based on the experimental results of low-cycle cyclic loading of prestressing joints, a three-wire restoring force model is established, and the calculation formulas of the corresponding stages are given. At the same time, through regression analysis, the loading at different stages is obtained. The stiffness degradation formula of unloading stiffness with the increase of displacement amplitude is compared with the experimental results. The proposed restoring force model can be used for the elastoplastic seismic response analysis and seismic design of this kind of prefabricated structures.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TU352.11;TU37

【共引文獻(xiàn)】

相關(guān)博士學(xué)位論文 前10條

1 王學(xué)慶;考慮土—結(jié)構(gòu)動(dòng)力相互作用的巨型框架隔震懸掛結(jié)構(gòu)動(dòng)力響應(yīng)分析[D];遼寧工程技術(shù)大學(xué);2009年

2 付強(qiáng);1000MW核電站離心式上充泵水力設(shè)計(jì)與結(jié)構(gòu)可靠性研究[D];江蘇大學(xué);2010年

3 武成浩;基于樁土共同作用理論的高層結(jié)構(gòu)地震反應(yīng)分析與抗震性能評(píng)估方法研究[D];北京交通大學(xué);2010年

4 郭曉云;汶川地震反應(yīng)譜研究[D];中國(guó)地震局工程力學(xué)研究所;2011年

5 戚菁菁;鋼—混凝土組合框架抗震性能及地震彈塑性反應(yīng)研究[D];中南大學(xué);2011年

6 李小偉;古建筑雙跨木結(jié)構(gòu)抗震性能研究[D];長(zhǎng)安大學(xué);2009年

7 萬(wàn)海濤;鋼筋混凝土梁、柱構(gòu)件抗震性能試驗(yàn)及其基于變形性能的參數(shù)研究[D];華南理工大學(xué);2010年

8 蔡志恒;雙周期標(biāo)準(zhǔn)化的彈塑性反應(yīng)譜研究[D];浙江大學(xué);2011年

9 薛富春;富水黃土隧道隧底動(dòng)力特性研究[D];西南交通大學(xué);2011年

10 李賢;端板螺栓連接鋼—混凝土組合節(jié)點(diǎn)的抗震性能研究[D];湖南大學(xué);2009年

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本文編號(hào)：1497140