- 摘 要
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(1 四川大學(xué)建筑與環(huán)境學(xué)院深地科學(xué)與工程教育部重點(diǎn)實(shí)驗(yàn)室, 成都 610065; 2 四川大學(xué)建筑與環(huán)境學(xué)院破壞力學(xué)與工程防災(zāi)減災(zāi)四川省重點(diǎn)實(shí)驗(yàn)室, 成都 610065; 3 四川大學(xué)建筑與環(huán)境學(xué)院, 成都 610065; 4 中建三局第一建設(shè)工程有限責(zé)任公司, 武漢 430040)
摘要: 為改善裝配式混凝土墻板結(jié)構(gòu)體系的抗震性能,提出了一種高強(qiáng)螺栓-連接鋼板拼接式螺栓連接節(jié)點(diǎn),建立了墻板結(jié)構(gòu)的精細(xì)化有限元模型。 通過改變軸壓比,箍筋間距,節(jié)點(diǎn)位置,螺栓和連接鋼板的尺寸、數(shù)量和布置等因素,探究各參數(shù)對該墻板結(jié)構(gòu)體系力學(xué)性能的影響。 分析結(jié)果表明:和試驗(yàn)值相比,正負(fù)向的最大平均承載力和最大平均位移相差均在 14%以內(nèi);改變軸壓比對新型螺栓連接裝配式混凝土墻板結(jié)構(gòu)的承載能力和剛度等力學(xué)性能影響最大;在一定范圍內(nèi)減小螺栓的使用數(shù)量會降低結(jié)構(gòu)的承載力,同時(shí)會在一定程度上提高結(jié)構(gòu)的延性;改變螺栓直徑和鋼板厚度對結(jié)構(gòu)的力學(xué)性能影響不大,但減小鋼板厚度會使得鋼板發(fā)生屈服;改變箍筋間距和混凝土強(qiáng)度對結(jié)構(gòu)的承載能力有一定的影響;改變節(jié)點(diǎn)位置對結(jié)構(gòu)的初始剛度有較大影響。
關(guān)鍵詞: 螺栓連接; 裝配式混凝土墻板結(jié)構(gòu); 水平縫; 抗震性能; 參數(shù)分析
中圖分類號:TU375 文獻(xiàn)標(biāo)志碼:A 文章編號:1002-848X(2022)23-0035-11
DOI:10. 19701 / j. jzjg. HJZL2206
Bolt-connected precast RC wall panel structural seismic performance of horizontal joint
XIONG Feng1,2, ZHONG Yachao3, RAN Mingming1,2, CHEN Jiang1,2, XIONG Hongxing4, LI Wenrui4
(1 MOE Key Laboratory of Deep Underground Science and Engineering, College of Architecture and Environment, SichuanUniversity, Chengdu 610065, China; 2 Failure Mechanics & Engineering Disaster Prevention and Mitigation, KeyLaboratory of Sichuan Province, College of Architecture and Environment, Sichuan University, Chengdu 610065,China; 3 College of Architecture and Environment, Sichuan University, Chengdu 610065, China;4 China Construction Third Bureau First Engineering Co. , Ltd. , Wuhan 430040, China)
Abstract: In order to improve the seismic performance of the precast RC wall panel structure, a bolt-connected jointincluding high strength bolts and connected steel plates was proposed, and a detailed finite element model of wall panelstructure was established. By changing the axial compression ratio, spacing of stirrups, the position of the joint, and thesize, quantity and arrangement of the connectors at the joints, the influence of each parameter on the mechanical propertiesof the wall panel structural system was explored. The analysis results show that compared with the experimental results, thedifference between the maximum average bearing capacity and the maximum average displacement in the positive andnegative directions is within 14%. Changing the axial compression ratio has the greatest impact on the bearing capacity andstiffness of the novel bolt-connected precast RC wall panel structure. Reducing the number of bolts used within a certainrange will decrease the bearing capacity of the structure, but improve the ductility of the structure to a certain extent.Changing the diameter of the bolts and the thickness of the steel plates has little effect on the mechanical properties of thestructure, but reducing the thickness of the steel plates will make the steel plates yield. Changing the spacing of stirrupsand the strength of the concrete has a certain influence on the bearing capacity of the structure. Changing the position of thejoints has a great influence on the initial stiffness of the structure.
Keywords:bolt-connected; precast RC wall panel structure; horizontal joint; seismic performance; parametric analysis
∗國家自然科學(xué)基金面上項(xiàng)目(51978428),“十三五”國家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2018YFD1100903-02)。
第一作者:熊峰,博士,教授,主要從事裝配式鋼筋混凝土結(jié)構(gòu)研究,Email: fxiong@ scu. edu. cn。
[引用本文] 熊峰,鐘亞超,冉明明,等. 螺栓連接裝配式混凝土墻板結(jié)構(gòu)水平縫的抗震性能研究[ J]. 建筑結(jié)構(gòu),2022,52( 23):35-45,55. XIONG Feng,ZHONG Yachao,RAN Mingming,et al. Bolt-connected precast RC wall panelstructural seismic performance of horizontal joint[J]. Building Structure,2022,52(23):35-45,55.
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