胶合木与钢筋桁架混凝土板界面连接抗剪性能试验研究  

Experimental study on the shear behavior of interfacial connections between glulam and concrete slabs with rebar truss decks

作　　者：史本凯 卢旭辉 吴明旺 杨会峰[1] 陈思见 SHI Benkai;LU Xuhui;WU Mingwang;YANG Huifeng;CHEN Sijian(College of Civil Engineering,Nanjing Tech University,Nanjing 211800,China)

机构地区：[1]南京工业大学土木工程学院,江苏南京211800

出　　处：《南京工业大学学报（自然科学版）》2024年第4期445-454,共10页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家自然科学基金青年项目(52208253);江苏省博士后基金(2021K128);江苏省卓越博士后资助计划(2022ZB395)。

摘　　要：为提高构件预制率,将钢筋桁架楼承板应用到传统的木混凝土组合梁中,形成一种新型组合结构——木钢筋桁架混凝土组合梁。基于木混凝土组合梁中常用的螺钉、榫钉和植钢板连接,对采用钢筋桁架楼承板的木混凝土界面连接的抗剪性能进行了推出试验,并与普通配筋的木混凝土界面连接的抗剪性能进行了对比。推出试验结果表明:与混凝土板采用普通配筋的推出试件相比,引入钢筋桁架楼承板后,不同连接方式下新型组合梁推出试件的界面连接抗剪承载力和滑移刚度得到明显提升。本文所提出的新型组合梁在提高构件工业化水平和施工效率的同时,其界面连接的抗剪性能得到明显改善,有利于促进木混凝土组合结构在木结构领域的应用。To improve the precast ratio of components,this article proposed a novel composite structure,the timber-concrete composite(TCC)beam with rebar truss decks,by introducing rebar truss decks into traditional TCC beams.Based on the commonly used screw,notch-screw,and steel plate embedment connections in TCC beams,the shear performance of timber-concrete interfacial connections with rebar truss decks was studied through push-out tests.The shear performance of timber-concrete interfacial connections with ordinary reinforcement bars was also tested for comparisons.The push-out test results showed that,under different connection types,the shear strength and slip stiffness of the interfacial connections in the novel composite beam were significantly improved compared to the push-out specimens with ordinary reinforcement bars,due to the application of rebar truss decks.The novel composite beam presented in this article not only improved the industrialization level of components and construction efficiency but also greatly enhanced the shear performance of interfacial connections,facilitating the application of TCC structures in the field of timber structures.

关 键 词：木混凝土组合 剪力连接件 抗剪性能 钢筋桁架楼承板 木结构 

分 类 号：TU366.3[建筑科学—结构工程]