發(fā)布時(shí)間：2018-10-22 17:58

【摘要】：充足的冗余性能可以為剪力墻在地震作用下提供多道抗震防線,提高其抵御地震作用的能力。為研究冗余剪力墻的抗震性能,設(shè)計(jì)2個(gè)低配筋帶縫冗余剪力墻試件,一個(gè)試件含有單排配筋混凝土墻肢,一個(gè)試件含有配筋砌體墻肢,進(jìn)行低周反復(fù)荷載試驗(yàn)。分析研究試件的破壞過程和破壞機(jī)理、滯回特性、強(qiáng)度衰減、剛度退化和耗能能力。試驗(yàn)結(jié)果表明,2個(gè)低配筋帶縫冗余剪力墻受力破壞時(shí)都有明顯的層次性,在墻體薄弱部分破壞后剩余結(jié)構(gòu)能繼續(xù)承載,表現(xiàn)出較好的冗余特性,且單排配筋混凝土帶縫冗余剪力墻同配筋砌體帶縫冗余剪力墻相比,滯回環(huán)更為飽滿,具有更好的耗能能力和后期承載性能,抗震性能更好。
[Abstract]:Sufficient redundant performance can provide multiple seismic defense lines for shear walls under earthquake, and improve their ability to resist earthquake action. In order to study the seismic behavior of redundant shear wall, two specimens of redundant shear wall with joint with low reinforcement are designed, one specimen contains single row reinforced concrete wall limb, one specimen contains reinforced masonry wall limb, and the other sample contains reinforced masonry wall limb. The low cycle cyclic loading test is carried out. The failure process and failure mechanism, hysteretic characteristics, strength attenuation, stiffness degradation and energy dissipation capacity of the specimens are analyzed and studied. The test results show that there are obvious layers in the failure of two redundant shear walls with low reinforcement joints, and the residual structures can continue to bear the load after the weak parts of the walls are destroyed, showing better redundant characteristics. Compared with the reinforced masonry with joint redundant shear wall, the hysteretic loop of single row reinforced concrete with joint redundant shear wall is fuller, with better energy dissipation capacity and later bearing capacity, and better seismic performance.
【作者單位】： 湖南大學(xué);中國(guó)建筑上海設(shè)計(jì)研究院有限公司;
【基金】：國(guó)家自然科學(xué)青年基金(50808074) 國(guó)家自然科學(xué)基金面上項(xiàng)目(51378193)
【分類號(hào)】：TU398.2

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本文編號(hào)：2287896