可循环使用全装配钢-混凝土组合梁抗弯性能试验研究  

Experimental study on flexural resistance of recyclable fully assembled steel-concrete composite beams

作　　者：侯和涛[1] 鲁玉曦 臧增运 高梦起 熊方明 HOU Hetao;LU Yuxi;ZANG Zengyun;GAO Mengqi;XIONG Fangming(School of Civil Engineering, Shandong University, Jinan 250061, P. R. China;Zhengzhou City Construction Group Investment Co., Ltd, Zhengzhou 450001, P. R. China;Qingdao Xinguangzheng Steel Structure Co., Ltd, Qingdao 266700, Shandong, P. R. China)

机构地区：[1]山东大学土建与水利工程学院,济南250061 [2]郑州城建集团投资有限公司,郑州450001 [3]青岛鑫光正钢结构股份有限公司,山东青岛266700

出　　处：《土木与环境工程学报（中英文）》2022年第4期87-95,共9页Journal of Civil and Environmental Engineering

基　　金：国家自然科学基金(51878390、51508331、51578324)。

摘　　要：研究了一种可循环使用的全装配钢-混凝土组合梁,组合梁由预制混凝土楼板和钢梁通过新型剪力连接件(以下简称“紧固件”)组合为一体,紧固件固定于预制楼板的钢导槽上,通过钢梁和预制楼板交界面的摩擦来传递两者之间的剪力。为研究此新型全装配钢-混凝土组合梁在静荷载作用下的受弯性能,进行了6组足尺试件在简支条件下的四点弯曲试验。6组试件均为部分剪力连接,包括5组可循环使用全装配钢-混凝土组合梁和1组采用栓钉作为剪力连接件的现浇组合梁,主要变化参数为预制混凝土楼板的数量及纯弯段的长度。结果表明:在单调荷载作用下,组合梁表现出一定的组合作用;预制板数量越多,试件的初始刚度越小,但对试件的受弯极限承载力没有明显影响,纯弯段的长度变化对试件的初始刚度和受弯极限承载力均没有明显影响。This article mainly studies a recyclable fully assembled steel-concrete composite beam,which is composed of several precast concrete slabs and a steel beam through a new type of shear connector(hereinafter referred to as"fastener").The fastener is fixed on the steel channel beneath the concrete slab.Moreover,the shear force between the steel beam and the prefabricated concrete slab is transmitted through the friction between those two.In order to study the flexural performance of this new fully assembled steel-concrete composite beam under static load,six sets of full-scale specimens were subjected to four-point bending tests under simply supported conditions.The six sets of test pieces are all partially shear connections,including five groups of recyclable fully assembled steel-concrete composite beams and one group of cast-in-place composite beams with studs as shear connectors.The main variablesare the number of precast concrete floor slabs and the distance between loading points.The test results show that the composite beam exhibits a certain combination effect under monotonic load.The larger greater the number of prefabricated plates,the lower the initial stiffness of the specimen,but it has no obvious effect on the ultimate flexural capacity of the specimen.The length change of the pure bending section has no significant effect on either the initial stiffness nor the ultimate flexural capacity of the specimen.

关 键 词：全装配 钢-混凝土组合梁 弯曲试验 受力性能 

分 类 号：TU398[建筑科学—结构工程]