輕鋼構(gòu)架鋼骨混凝土剪力墻抗震性能試驗(yàn)
錢(qián)稼茹1,黃勤翼1,侯建群2,任寶雙2,趙作周1
- 摘 要
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(1 清華大學(xué)土木工程安全與耐久教育部重點(diǎn)實(shí)驗(yàn)室,北京100084;2 清華大學(xué)建筑設(shè)計(jì)研究院,北京100084)[摘要]為研究輕鋼構(gòu)架鋼骨混凝土剪力墻的破壞形態(tài)、滯回特性、承載能力及變形能力等抗震性能,完成了8個(gè)剪跨比為2.25試件的擬靜力試驗(yàn)。結(jié)果表明:試件的破壞形態(tài)為壓彎破壞,軸壓比高的試件墻底混凝土破壞的程度比軸壓比低的試件嚴(yán)重;頂點(diǎn)水平力-位移滯回曲線(xiàn)比較飽滿(mǎn),具有較長(zhǎng)的峰值承載力穩(wěn)定段;軸力作用下的受彎承載力試驗(yàn)值大于計(jì)算值;極限位移角大于1/100,變形能力隨軸壓比的增大而減小,邊緣構(gòu)件配箍特征值大的高軸壓比墻,同樣具有大的變形能力。輕鋼構(gòu)架鋼骨混凝土剪力墻的受彎承載力可按鋼筋混凝土剪力墻計(jì)算,鋼骨用等面積鋼筋代替,并可考慮輕鋼構(gòu)架C形鋼和豎向鋼筋的作用。[關(guān)鍵詞]輕鋼構(gòu)架;鋼骨混凝土剪力墻;抗震性能;軸壓比;擬靜力試驗(yàn)中圖分類(lèi)號(hào):TU375文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1002-848X(2011)02-0017-05Tests on seismic behavior of lightweight-steel framework steel reinforced concrete shear wallsQian Jiaru1, Huang Qinyi1, Hou Jianqun2, Ren Baoshuang2, Zhao Zuozhou1(1 Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Tsinghua University, Beijing100084, China; 2 Architectural Design and Research Institute of Tsinghua University, Beijing 100084, China)Abstract:To study seismic behavior of lightweight-steel framework steel reinforced concrete (SRC) shear walls, quasi-static tests of 8 specimens with shear span ratio of 2.25 were carried out. The test results indicate that the specimens fail in compression-bending mode. Damage of concrete at the bottom of the wall is much serious for the specimens with high axial load ratio than the specimens with low axial load ratio. The top lateral load-displacement hysteretic loops are plump, and the peak lateral load keep stable with a large lateral displacement increment. The ultimate drift ratios of the specimens are larger than 1/100, and the deformation capacity of the specimens decreases with increasing of the axial load ratio. The walls with high axial load ratio have great deformation capacity when the boundary elements of the wall have a large value of stirrup characteristic ratio. The flexural strength of the lightweight-steel framework SRC shear walls can be calculated by the flexural strength formula of the RC shear walls, and the C type lightweight-steel and the vertical distributed reinforcements can be taken into account.Keywords:lightweight-steel framework; SRC shear wall; seismic behavior; axial load ratio; quasi-static test作者簡(jiǎn)介:錢(qián)稼茹,教授,Email:qianjr@tsinghua.edu.cn。參考文獻(xiàn)[1]馮鵬,初明進(jìn),侯建群,等.鋼網(wǎng)構(gòu)架混凝土復(fù)合結(jié)構(gòu)多層住宅足尺模型抗震性能試驗(yàn)研究[J].建筑結(jié)構(gòu)學(xué)報(bào), 2009,30(3):1-10.[2]初明進(jìn),馮鵬,侯建群,等. 鋼網(wǎng)構(gòu)架混凝土復(fù)合結(jié)構(gòu)多層住宅墻體抗震性能試驗(yàn)研究[J]. 土木工程學(xué)報(bào), 2009,40(7):36-45.[3]鄧超,陳忠范. 鋼網(wǎng)構(gòu)架混凝土復(fù)合墻體的試驗(yàn)研究[J]. 江蘇建筑, 2006(5):17-19.[4]王志浩,方鄂華,錢(qián)稼茹. 鋼骨混凝土剪力墻的抗彎性能[J]. 建筑結(jié)構(gòu), 1998,28(2):13-16.[5]喬彥明,錢(qián)稼茹,方鄂華. 鋼骨混凝土剪力墻抗剪性能的研究[J]. 建筑結(jié)構(gòu), 1995,25(8):3-7.[6]魏勇.外鋼框架-混凝土核心筒結(jié)構(gòu)抗震性能及設(shè)計(jì)方法研究[D]. 北京:清華大學(xué),2006.[7]武敏剛,呂西林. 鋼骨聯(lián)肢剪力墻抗震性能試驗(yàn)研究[J]. 結(jié)構(gòu)工程師, 2004,20(5):52-56.[8]呂西林,董宇光. 截面中部配置型鋼的混凝土剪力墻抗震性能研究[J]. 地震工程與工程振動(dòng), 2006,26(6):101-107.[9]錢(qián)稼茹, 魏勇, 趙作周,等. 高軸壓比鋼骨混凝土剪力墻抗震性能試驗(yàn)研究[J]. 建筑結(jié)構(gòu)學(xué)報(bào),2008,29(2): 43-50.[10]JGJ3—2002 高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程[S]. 北京:中國(guó)建筑工業(yè)出版社,2002.
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