本文關(guān)鍵詞： 防屈曲支撐 屈曲 抗震性能 試驗研究 恢復(fù)力模型　出處：《西安建筑科技大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：目前國內(nèi)外的地震區(qū)都在普遍使用支撐—框架體系，，是由于這種體系能給框架結(jié)構(gòu)整體提供較大的抗側(cè)移剛度，提高建筑物的抗震性能。在1994年的美國北嶺地震以及1995年的日本阪神地震中，大量裝有中心普通支撐體系的樓房在地震中倒塌。事后對倒塌的房屋進(jìn)行檢測分析的時發(fā)現(xiàn)，大多數(shù)是由于支撐過早的發(fā)生屈曲從而使得結(jié)構(gòu)承載力下降引發(fā)的。為了解決這個問題，專家和學(xué)者提出了一種新的支撐，來保證這種支撐在大震的時候可以屈服，從而起到保護(hù)整體結(jié)構(gòu)的作用，但是絕對不能發(fā)生屈曲，稱之為防屈曲支撐。這種體系目前已經(jīng)在美國和日本被大量的應(yīng)用到實際工程當(dāng)中，以優(yōu)異的抗震性能得到了大家的認(rèn)可。在國內(nèi)也有越來越多的科研人員投入到防屈曲支撐的研究領(lǐng)域中來。 本次試驗采用的是國產(chǎn)Q235熱軋鋼材設(shè)計并制作防屈曲支撐，測試了鋼材的力學(xué)性能，制作了6個防屈曲支撐試件，研究其分別在3種芯材橫截面、2種灌實材料變化下對構(gòu)件的耗能能力以及抗震性能的影響。通過低周反復(fù)荷載加載試驗對六個防屈曲支撐試件的抗震性能進(jìn)行了研究，具體有力—位移滯回曲線、剛度退化過程、骨架曲線、強(qiáng)度退化過程、耗能能力、等效粘滯阻尼比等。試驗結(jié)果表明，一字形芯材防屈曲支撐的構(gòu)造合理，所有試件的滯回曲線穩(wěn)定飽滿；芯材特性和灌實材料強(qiáng)度對于該種防屈曲支撐的耗能性能均有顯著影響。其次分析了本次構(gòu)件的穩(wěn)定性，有整體穩(wěn)定與內(nèi)核芯材的穩(wěn)定，并推導(dǎo)了相關(guān)的公式。在試驗的基礎(chǔ)上得到了防屈曲支撐的恢復(fù)力模型，并將測定結(jié)果與雙線性模型計算出的理論值進(jìn)行了比較。結(jié)果表明,這種新型屈曲約束支撐各項力學(xué)指標(biāo)實測值與理論值符合較好,耗能能力穩(wěn)定,滿足國內(nèi)外規(guī)范的要求，達(dá)到了工程應(yīng)用的標(biāo)準(zhǔn)。
[Abstract]:At present, brace-frame system is widely used in earthquake areas both at home and abroad, because this kind of system can provide greater lateral stiffness to the whole frame structure. To improve the seismic performance of buildings. During the earthquakes of 1994 in the North Ridge, and 1995 in Hanshin, Japan, a large number of buildings with a central support system collapsed in the earthquake. In order to solve this problem, experts and scholars have proposed a new kind of brace to ensure that it can yield in the event of a strong earthquake. It can protect the whole structure, but it must not be buckled, which is called buckling bracing. This kind of system has been widely used in practical projects in the United States and Japan. Because of its excellent seismic performance, more and more researchers are engaged in the research field of buckling bracing. In this experiment, the domestic Q235 hot rolled steel was designed and manufactured to resist buckling. The mechanical properties of the steel were tested, and six specimens of anti-buckling support were made. The effects of three kinds of core materials on the energy dissipation capacity and seismic performance of the members were studied. The seismic behavior of six specimens of buckling braces was studied by low cycle cyclic loading test. The concrete force-displacement hysteretic curve, stiffness degradation process, skeleton curve, strength degradation process, energy dissipation capacity, equivalent viscous damping ratio, etc. The experimental results show that the structure of a zigzag core against buckling braces is reasonable. The hysteretic curve of all specimens is stable and full, and the properties of core material and the strength of compacted material have a significant effect on the energy dissipation performance of this kind of anti-buckling bracing. Secondly, the stability of this component is analyzed, with the stability of the whole component and the stability of the core material. On the basis of experiments, the restoring force model of buckling braces is obtained, and the measured results are compared with the theoretical values calculated by the bilinear model. The results show that, The measured values of the new buckling constraint braces are in good agreement with the theoretical values, the energy dissipation capacity is stable and meets the requirements of the domestic and foreign codes and meets the engineering application standards.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU352.1;TU317

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 高向宇;張慧;杜海燕;梁峰;;組合熱軋角鋼防屈曲支撐構(gòu)造及抗震試驗[J];北京工業(yè)大學(xué)學(xué)報;2008年05期

2 羅開海;程紹革;白雪霜;榮維生;;屈曲約束耗能支撐力學(xué)性能分析[J];工程抗震與加固改造;2007年02期

3 胡大柱;尤毓慧;邵宏政;;屈曲約束耗能支撐在教學(xué)樓加固工程中的應(yīng)用[J];工程抗震與加固改造;2009年06期

4 高向宇;張慧;杜海燕;梁峰;尹學(xué)軍;;防屈曲支撐恢復(fù)力的特點及計算模型研究[J];工程力學(xué);2011年06期

5 孫飛飛;劉猛;李國強(qiáng);郭小康;胡寶琳;;國產(chǎn)TJ-Ⅰ型屈曲約束支撐的性能研究[J];河北工程大學(xué)學(xué)報(自然科學(xué)版);2009年01期

6 高向宇;李永梅;張慧;杜海燕;梁峰;;考慮防屈曲支撐力學(xué)參數(shù)非對稱性的有效阻尼比[J];建筑結(jié)構(gòu);2008年03期

7 汪家銘,中島正愛,陸燁;屈曲約束支撐體系的應(yīng)用與研究進(jìn)展(Ⅰ)[J];建筑鋼結(jié)構(gòu)進(jìn)展;2005年01期

8 汪家銘,中島正愛,陸燁;屈曲約束支撐體系的應(yīng)用與研究進(jìn)展(Ⅱ)[J];建筑鋼結(jié)構(gòu)進(jìn)展;2005年02期

9 楊文偉;;提高學(xué)校建筑抗震性能的對策建議[J];科學(xué)技術(shù)與工程;2010年19期

10 郭子雄,楊勇;恢復(fù)力模型研究現(xiàn)狀及存在問題[J];世界地震工程;2004年04期

相關(guān)博士學(xué)位論文 前1條

1 馬寧;全鋼防屈曲支撐及其鋼框架結(jié)構(gòu)抗震性能與設(shè)計方法[D];哈爾濱工業(yè)大學(xué);2010年

本文編號：1537323