预制装配式型钢部分外包混凝土梁受剪性能试验研究  

Experimental study on shear behavior of prefabricated section steel partially encased concrete beams

作　　者：梁炯丰[1] 宋瑞霖 王刘浩翔 汤蒂莲[1] 刘如来 LIANG Jiongfeng;SONG Ruilin;WANG Liuhaoxiang;TANG Dilian;LIU Rulai(School of Civil and Architectural Engineering,East China University of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学土木与建筑工程学院,江西南昌330013

出　　处：《混凝土》2023年第8期154-156,共3页Concrete

基　　金：国家自然科学基金(52068001);江西省主要学科学术与技术带头人项目(20204BCJL2037);江西省重点研发计划项目(20212BBG73002);东华理工大学研究生创新基金(DHYC-202039)。

摘　　要：提出了一种部分预制部分外包装配式组合梁,为研究其受剪性能,设计了5根预制装配式型钢部分外包混凝土(PPEC)梁和1根整浇部分外包混凝土(PEC)梁。观察了PPEC梁在竖向荷载作用下的剪切破坏特点并绘制了荷载-跨中挠度曲线,分析了混凝土强度等级、剪跨比和浇筑方式对受剪承载力的影响。试验结果表明:PPEC梁截面形式与构造基本可行,破坏形式均为剪压破坏。混凝土强度越高,PPEC梁受剪承载力越高;随剪跨比增大,PPEC梁受剪承载力降低;PPEC梁受剪承载力略小于整浇PEC梁。In order to study its shear performance,five precast fabricated section steel partially encased concrete(PPEC)beams and one cast-in-situ partially encased concrete(PEC)beam are designed.The shear failure characteristics of PPEC beams under vertical load are observed,the load mid span deflection curve is drawn,and the effects of concrete strength grade,shear span ratio and pouring method on shear bearing capacity are analyzed.The test results show that the section form and structure of PPEC beam are basically feasible,and the failure form is shear compression failure.The higher the concrete strength,the higher the shear capacity of PPEC beam.With the increase of shear span ratio,the shear capacity of PPEC beams decreases.The shear bearing capacity of PPEC beam is slightly less than that of cast-in-place PEC beam.

关 键 词：装配式 型钢部分外包混凝土梁 受剪 承载力 

分 类 号：TU528.7[建筑科学—建筑技术科学]