- 摘 要
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(1 北京建筑大學(xué)北京未來(lái)城市設(shè)計(jì)高精尖創(chuàng)新中心, 北京 100044;2 山東艾科福建筑科技有限公司, 煙臺(tái) 264006; 3 大連理工大學(xué)土木工程學(xué)院, 大連 116024)
[摘要]對(duì)1個(gè)現(xiàn)澆鋼筋混凝土剪力墻試件和2個(gè)裝配整體式剪力墻剪力墻試件進(jìn)行擬靜力試驗(yàn),研究剪跨比為1.5的裝配整體式剪力墻的抗震性能以及榫卯板構(gòu)造對(duì)榫卯接縫的連接性能的影響。結(jié)果表明:榫卯接縫整體性良好,接縫開(kāi)裂時(shí)試件位移角遠(yuǎn)大于1/1 000;裝配整體式剪力墻的破壞區(qū)域主要集中在榫卯接縫處,峰值荷載時(shí)墻體根部混凝土基本完好,承載力低于現(xiàn)澆鋼筋混凝土剪力墻,但剛度退化速率小于現(xiàn)澆鋼筋混凝土剪力墻,變形能力、累計(jì)耗能大于現(xiàn)澆鋼筋混凝土剪力墻,峰值荷載后裝配整體式剪力墻進(jìn)入墻柱組合體受力階段,承載力下降減緩,位移角達(dá)到1/25時(shí)仍保持水平和豎向承載力;榫卯板橫向凹槽底部與豎向孔洞內(nèi)側(cè)是否平齊對(duì)墻體承載力基本沒(méi)有影響,但平齊構(gòu)造可延緩榫卯接縫破壞,有助于提高墻體的剛度和耗能能力。
[關(guān)鍵詞]裝配整體式剪力墻;榫卯板;榫卯接縫;預(yù)制邊緣構(gòu)件;抗震性能;連接性能
中圖分類號(hào):TU973-1+6,TU317+.1文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1002-848X(2021)09-0007-08
Experimental study on seismic behavior of assembled monolithic shear walls with different mortise-tenon joints of wallboards
CHU Mingjin1 , CHEN Guoyao1 , LIU Jiliang3 , CAO Chunli1,2, LI Xiangbin1, LI Aiqun1
(1 Beijing Advanced Innovation Center for Future Urban Design, Beijing University of Civil Engineering and Architecture, Beijing 100044, China; 2 Shandong Aikefu Building Technology Co., Ltd., Yantai 264006, China; 3 School of Civil Engineering, Dalian University of Technology, Dalian 116024, China)
Abstract:The pseudo-static tests of one cast-in-situ reinforced concrete shear wall specimen and 2 assembled monolithic shear wall specimens were carried out to study the seismic behavior of the assembled monolithic shear wall with the shear span ratio of 1.5 and the influence of mortise-tenon structure on the connection performance of mortise-tenon joints. The results show that the mortise-tenon joint has good integrity, while the joints cracke, the displacement angle of specimens is much greater than 1/1 000. The damage area of assembled monolithic shear wall mainly concentrate on the mortise-tenon joints, and under the peak load, the concrete at the root of the wall is basically intact, the bearing capacity of assembled monolithic shear wall is lower than that of the cast-in-situ reinforced concrete shear wall, but stiffness degradation rate is less than that of the cast-in-situ reinforced concrete shear wall, deformation behavior and cumulative energy dissipation are greater than that of the cast-in-situ reinforced concrete shear wall, after the peak load, the assembled monolithic shear wall enters the stress stage of the wall-column combination, which delays the decrease of the bearing capacity, and the horizontal and vertical bearing capacity remains when the displacement angle reaches 1/25. In addition, whether the inner side of vertical hole and the bottom of transverse groove is in the same plane has no effect on the bearing capacity of the wall, but when the structure’ design is in the same plane, it can delay the damage of the mortise-tenon joints, which can help improve the stiffness and the energy dissipation of the wall.
Keywords:assembled monolithic shear wall; wallboard with mortise-tenon joint; mortise-tenon joint; precast edge element; seismic behavior; connection performance
*國(guó)家自然科學(xué)基金項(xiàng)目(51778034),山東省自然科學(xué)基金(ZR2018PEE024),北京市屬高?;究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助(X18179,X19003)。
作者簡(jiǎn)介:初明進(jìn),博士,教授,博士生導(dǎo)師,Email: chumingjin@bucea.edu.cn;通信作者:李愛(ài)群,博士,教授,博士生導(dǎo)師,Email: liaiqun@bucea.edu.cn。
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