本文選題：鋼筋混凝土　切入點(diǎn)：框架節(jié)點(diǎn)　出處：《長(zhǎng)安大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：節(jié)點(diǎn)區(qū)作為鋼筋混凝土框架結(jié)構(gòu)的重要受力部位，是結(jié)構(gòu)抗震的薄弱環(huán)節(jié)所在。對(duì)框架節(jié)點(diǎn)的研究通常從以下兩方面開(kāi)展：一類局限于節(jié)點(diǎn)，重點(diǎn)研究節(jié)點(diǎn)核心區(qū)的破壞機(jī)理和受剪性能；另一類是從整體結(jié)構(gòu)出發(fā)研究節(jié)點(diǎn)，為確保核心區(qū)的安全可靠，提出合理的設(shè)計(jì)方法。現(xiàn)行抗震設(shè)計(jì)規(guī)范要求實(shí)現(xiàn)“強(qiáng)柱弱梁、強(qiáng)節(jié)點(diǎn)弱構(gòu)件”。因此，通常要求梁端塑性鉸先于柱端出現(xiàn)，柱端先于節(jié)點(diǎn)出現(xiàn)，故在此情況下主要研究梁端屈服后的節(jié)點(diǎn)區(qū)性能。本文從第二個(gè)方面對(duì)平面框架節(jié)點(diǎn)進(jìn)行研究。 通過(guò)兩個(gè)平面鋼筋混凝土框架梁柱邊節(jié)點(diǎn)的水平低周反復(fù)荷載試驗(yàn)，從承載力、節(jié)點(diǎn)受剪及變形能力、耗能能力等方面對(duì)邊節(jié)點(diǎn)進(jìn)行抗震性能研究。進(jìn)而應(yīng)用ABAQUS有限元軟件對(duì)鋼筋混凝土框架梁柱邊節(jié)點(diǎn)進(jìn)行有限元參數(shù)分析，研究不同軸壓比和縱向鋼筋配筋率對(duì)構(gòu)件抗震性能的影響。最后結(jié)合試驗(yàn)研究和有限元分析，對(duì)現(xiàn)行設(shè)計(jì)方法進(jìn)行驗(yàn)證。得出如下結(jié)論： （1）對(duì)于鋼筋混凝土框架梁柱邊節(jié)點(diǎn)，按照現(xiàn)行規(guī)范設(shè)計(jì)的節(jié)點(diǎn)試件，在反復(fù)荷載作用下，未發(fā)生節(jié)點(diǎn)核心區(qū)破壞，，按現(xiàn)行規(guī)范設(shè)計(jì)安全可靠。 （2）隨著柱端彎矩增大系數(shù)的提高，對(duì)于平面梁柱節(jié)點(diǎn)試件，破壞模式從柱端混凝土壓潰破壞轉(zhuǎn)變成梁端塑性鉸破壞，現(xiàn)行規(guī)范規(guī)定柱端彎矩增大系數(shù)有效地實(shí)現(xiàn)了“強(qiáng)柱弱梁”。 （3）若邊節(jié)點(diǎn)試件發(fā)生梁端屈服破壞，混凝土柱軸壓比變化對(duì)鋼筋混凝土節(jié)點(diǎn)承載能力和抗震性能影響甚微。 （4）隨著柱子縱向鋼筋配筋率的逐步提高（但應(yīng)滿足最大配筋率要求），“強(qiáng)柱弱梁”開(kāi)始體現(xiàn)出來(lái)，梁端出現(xiàn)了塑性鉸，顯著提高了節(jié)點(diǎn)的極限承載能力和抗震性能，在保證“強(qiáng)柱弱梁”的前提下，柱子縱向鋼筋配筋率的增加，節(jié)點(diǎn)的極限承載能力和抗震性能有所提高。 （5）對(duì)于鋼筋混凝土平面梁柱邊節(jié)點(diǎn)，在不考慮板和墻對(duì)梁承載力的提高的條件下，現(xiàn)行規(guī)范相關(guān)條文保證可以確保實(shí)現(xiàn)預(yù)期的“強(qiáng)柱弱梁”破壞模式，現(xiàn)行設(shè)計(jì)規(guī)范相關(guān)要求是合理的。
[Abstract]:As an important force position of reinforced concrete frame structure, the joint area is the weak link of seismic resistance. The research of frame joint is usually carried out from the following two aspects: one is limited to the joint, the other is limited to the joint. The failure mechanism and shear behavior of the core zone of the joints are mainly studied. The other is to study the joints from the whole structure. In order to ensure the safety and reliability of the core region, a reasonable design method is put forward. The current seismic design code requires the realization of "strong column and weak beam," Therefore, the plastic hinge at the end of the beam is usually required to appear before the end of the column and the end of the column before the joint, so in this case, the performance of the joint after yielding at the end of the beam is mainly studied. In this paper, the joint of the plane frame is studied from the second aspect. Through horizontal low cycle cyclic loading tests of Liang Zhu side joints of two plane reinforced concrete frames, the capacity of bearing capacity, shear and deformation of joints are studied. The seismic behavior of side joints is studied in terms of energy dissipation capacity, and the finite element parameters of Liang Zhu edge joints of reinforced concrete frame are analyzed by using ABAQUS finite element software. The effects of axial compression ratio and longitudinal reinforcement ratio on the seismic behavior of members are studied. Finally, the current design method is verified by combining experimental research and finite element analysis. The conclusions are as follows:. 1) for the side joints of reinforced concrete frame Liang Zhu, the joint specimens designed according to the current code have no damage to the core zone of the joints under the action of repeated load, and the design is safe and reliable according to the current code. 2) with the increasing of column end moment increasing coefficient, the failure mode of plane Liang Zhu joint specimen is changed from column end concrete crushing failure to beam end plastic hinge failure. The "strong column weak beam" is effectively realized by the increasing coefficient of column end moment in current code. 3) if the beam end yield failure occurs, the axial compression ratio of concrete column has little effect on the bearing capacity and seismic performance of reinforced concrete joint. (4) with the gradual increase of longitudinal reinforcement ratio (but should meet the requirement of maximum reinforcement ratio), the "strong column and weak beam" began to manifest, and the plastic hinge appeared at the end of the beam, which significantly improved the ultimate bearing capacity and seismic performance of the joints. On the premise of "strong column and weak beam", the longitudinal reinforcement ratio of the column is increased, and the ultimate bearing capacity and seismic performance of the joint are improved. (5) for reinforced concrete plane Liang Zhu side joints, without considering the improvement of the bearing capacity of slab and wall to beam, the relevant provisions of the current code guarantee that the expected failure mode of "strong column and weak beam" can be achieved. The relevant requirements of the current design code are reasonable.
【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)】：TU375;TU352.11

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 趙鴻鐵;;鋼筋砼框架節(jié)點(diǎn)區(qū)斜截面抗裂度計(jì)算[J];建筑結(jié)構(gòu);1986年06期

2 張勁;王慶揚(yáng);胡守營(yíng);王傳甲;;ABAQUS混凝土損傷塑性模型參數(shù)驗(yàn)證[J];建筑結(jié)構(gòu);2008年08期

3 傅劍平,陳小英,陳滔,白紹良;中低剪壓比框架節(jié)點(diǎn)抗震機(jī)理的試驗(yàn)研究[J];重慶建筑大學(xué)學(xué)報(bào);2005年01期

4 白紹良，傅劍平，周中元，周興杰;末端帶直角彎折的梁筋在端節(jié)點(diǎn)中的錨固性能試驗(yàn)研究[J];重慶建筑工程學(xué)院學(xué)報(bào);1994年02期

5 框架節(jié)點(diǎn)專題研究組;低周反復(fù)荷載作用下鋼筋混凝土框架梁柱節(jié)點(diǎn)核心區(qū)抗剪強(qiáng)度的試驗(yàn)研究[J];建筑結(jié)構(gòu)學(xué)報(bào);1983年06期

6 王肇民,鄧洪洲,董軍;高層巨型框架懸掛結(jié)構(gòu)體系抗震性能研究[J];建筑結(jié)構(gòu)學(xué)報(bào);1999年01期

7 吳濤;邢國(guó)華;劉伯權(quán);白國(guó)良;黃華;;鋼筋混凝土框架變梁中節(jié)點(diǎn)抗震性能試驗(yàn)研究[J];建筑結(jié)構(gòu)學(xué)報(bào);2010年10期

8 朱宏平;代筠杰;高飛;;鋼筋混凝土梁柱節(jié)點(diǎn)抗剪強(qiáng)度分析[J];華中科技大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年07期

9 沈祖炎,陳榮毅;巨型結(jié)構(gòu)的應(yīng)用與發(fā)展[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);2001年03期

10 余瓊,呂西林,陸洲導(dǎo);框架節(jié)點(diǎn)反復(fù)荷載下的受力性能研究[J];同濟(jì)大學(xué)學(xué)報(bào)(自然科學(xué)版);2004年10期

本文編號(hào)：1582421