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(1 華北理工大學(xué)建筑工程學(xué)院， 唐山 063210；2 河北省地震工程研究中心， 唐山 063009)

［摘要］設(shè)計(jì)2個(gè)L形豎縫裝配式耗能剪力墻，對(duì)其進(jìn)行低周往復(fù)加載試驗(yàn)，并對(duì)2個(gè)破壞后的試件使用CFRP加固后再進(jìn)行同樣的加載試驗(yàn)，研究加固前后試件的承載力、剛度退化、耗能能力以及延性等性能。結(jié)果表明，L形豎縫裝配式耗能剪力墻整體工作性能良好，隨軸壓比的增加試件的承載力增加，延性有所降低，但位移延性系數(shù)均大于或接近3，有較好的變形能力；腹板墻和L形翼墻均表現(xiàn)為彎剪破壞；在使用CFRP加固后，試件的延性、剛度及承載力有所下降，但部分墻肢能滿足使用要求。加固前后試件均表現(xiàn)出了良好的耗能能力。 

［關(guān)鍵詞］CFRP加固；L形豎縫；接縫；耗能；裝配式剪力墻；抗震性能 

中圖分類(lèi)號(hào)：TU398-2 文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)16-0016-05

Study on seismic performance of prefabricated energy-dissipating shear walls with L-shaped vertical joint before and after CFRP reinforcement

ZHANG  Yumin1,2,  PANG  Bao1,2,  LI  Xiang1,2,  WANG  Yuliang1,2,  CAI  Zhanjun1,2,  HE  Bin1,2 

(1 College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan 063210， China；2 Earthquake Engineering Research Center of Hebei Province, Tangshan 063009， China) 

Abstract: Two  prefabricated energy-dissipation shear wall specimens with L-shaped vertical  joints were designed. Low cyclic reciprocating loading test was carried out, and the same loading test was carried out on two damaged specimens strengthened with CFRP. The bearing capacity, stiffness degradation, energy dissipation capacity and ductility of the specimens before and after reinforcement were studied. The results show that the overall working performance of  prefabricated energy-dissipation   shear wall specimens with L-shaped vertical  joints is good, and the bearing capacity of the specimens increases but the ductility decreases with the increase of axial compression ratio, the displacement ductility coefficient is greater than or close to 3, showing good denaturation capacity; the web shear wall and L-shaped wing shear wall show bending and shear failure; the ductility, stiffness and bearing capacity of the specimens are decreased after CFRP reinforcement, but parts of shear walls can meet the service requirements. The specimens before and after reinforcement can show good energy dissipation capacity. 

Keywords:CFRP reinforcement； L-shaped vertical joint； joint； energy dissipation； prefabricated shear wall； seismic performance

*國(guó)家自然科學(xué)基金資助項(xiàng)目(51678237)，河北省建設(shè)科技研究計(jì)劃項(xiàng)目（2020-05-02）。

 作者簡(jiǎn)介：張玉敏，博士，教授，碩士生導(dǎo)師，Email: 710765269@qq.com；通信作者：王宇亮，博士研究生，副教授，碩士生導(dǎo)師，Email:14522466@qq.com。