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（湖南工業(yè)大學(xué)土木工程學(xué)院， 株洲 412007）

［摘要］為了模擬實(shí)際工程中有震損且不能完全卸除豎向荷載，但需要加固的開洞短肢剪力墻，設(shè)計(jì)2個(gè)1∶2 縮尺比例的L形開洞短肢剪力墻試驗(yàn)試件，先在低周反復(fù)荷載作用下使其腹板上下端部縱筋達(dá)到屈服，在不卸軸力情況下，用綜合性能優(yōu)良的高性能水泥復(fù)合砂漿鋼筋網(wǎng)（HPFL）對(duì)其進(jìn)行加固，再對(duì)加固后的試驗(yàn)試件進(jìn)行擬靜力試驗(yàn)。利用ANSYS 有限元軟件對(duì)加固前后模型進(jìn)行了數(shù)值模擬分析。通過(guò)與未加固的試驗(yàn)?zāi)Ｐ图皵?shù)值模擬模型的比較，研究加固后的短肢墻抗震性能的恢復(fù)或提高情況，探索開洞率對(duì)加固效果的影響，并對(duì)加固層工作機(jī)理進(jìn)行分析。結(jié)果表明，HPFL加固使短肢剪力墻的抗震性能有明顯提升，加固后的試件隨開洞率的增大，承載力下降，但延性提高，耗能能力增強(qiáng)。基于開洞短肢剪力墻的構(gòu)造特點(diǎn)及破壞形態(tài)，總結(jié)出了有具體針對(duì)性的加固修復(fù)構(gòu)造措施。

［關(guān)鍵詞］高性能水泥復(fù)合砂漿鋼筋網(wǎng)（HPFL）加固； 短肢剪力墻； 開洞； 震損； 抗震性能

中圖分類號(hào)：TU375-4文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2018)24-0111-08

Experimental research on seismic performance of HPFL strengthened short-pier shear wall with earthquake damage and  openings

Jiang Longmin, Liu Wenjing, He Jingfang, Wu Chenglin

（School of Civil Engineering, Hunan University of Technology, Zhuzhou 412007, China）

Abstract:In order to simulate the short-pier shear walls with openings that are damaged by earthquakes with unremoved vertical loads needing reinforcement in practical engineering, two 1∶2 scale L-shaped short-pier shear walls were designed. First, the longitudinal bars of the upper and lower ends of the web were yielded under low cyclic repeated loads. Under the condition of not unloading the axial force, high performance composite cement mortar laminates reinforced by mesh reinforcements（HPFL）with excellent comprehensive performance was used to reinforce it, and then quasi-static test was carried out on the strengthened test specimens. The finite element software ANSYS was used to simulate and analyze the model before and after reinforcement. By comparing with the experimental model and numerical simulation model without reinforcement, the recovery or improvement of seismic performance of reinforced short-pier shear wall was studied, and the influence of opening rate on reinforcement effect was studied, and the working mechanism of reinforcement layer was analyzed. The results show that HPFL reinforcement improves the seismic performance of short-pier shear walls significantly. The bearing capacity of the strengthened specimens decreases with the increase of the opening rate, but the ductility increases and the energy dissipation capacity increases. Based on the structural characteristics and failure modes of the short-pier shear wall with openings, the specific reinforcement and repair measures were summarized.

Keywords:high performance composite cement mortar laminates reinforced by mesh reinforcements（HPFL） reinforcement; short-pier shear wall; openings; earthquake damage; seismic performance

*國(guó)家自然科學(xué)基金(51741804)，湖南省自然科學(xué)基金株洲聯(lián)合基金(2016JJ5037)，湖南省大學(xué)生研究性學(xué)習(xí)與創(chuàng)新性實(shí)驗(yàn)計(jì)劃2016(982)。

作者簡(jiǎn)介：蔣隆敏，博士，教授，碩士生導(dǎo)師，Email：527943658@qq.com。