包容型再生混凝土板冲切承载力试验及计算方法  

Experiment and calculation method on punching shear loading capacity of waste block contained recycled concrete slab

作　　者：蒋凤昌[1,2] 周桂香[1] 奚友方 李政启[2] 朱慈勉[2] 居平国 

机构地区：[1]泰州职业技术学院,江苏泰州225300 [2]同济大学,上海200092 [3]江苏永泰建造工程有限公司,江苏泰州225300

出　　处：《混凝土》2013年第8期55-59,共5页Concrete

基　　金：江苏省333高层次人才培养工程基金资助(2011);江苏省高校"青蓝工程"中青年学术带头人培养基金资助(2012);泰州职业技术学院博硕专项科研基金资助

摘　　要：基于推广应用包容型再生混凝土的目的,设计了18块混凝土板试件进行抗冲切性能试验,考虑的主要因素包括混凝土抗压强度、抗弯钢筋配筋率、冲跨比、板厚和双柱头加载方式。试验结果表明,包容型再生混凝土板的冲切角约为61°,大于普通混凝土板约57°的冲切角;包容型再生混凝土板的受冲切强度高于普通混凝土板4.6%~8.4%。并且提出包容型再生混凝土板冲切承载力计算公式,供结构工程设计参考。Based on the purpose for popularizing application of waste block contained recycled concrete（WBCRC）,18 concrete slabs are designed to test their punching shear behavior that include main factors such as compression strength of concrete,reinforcement ratio of bending rebar,span-height ratio of slab,height of slab and double-column loading style.Experimental results indicate that punching angle of WBCRC slab was about 61°,bigger than 57° that of natural aggregate concrete slab;and the punching strength of WBCRC slab was higher than that of natural aggregate concrete slab by 4.6%~8.4%.Moreover,the calculation formula on punching shear loading capacity of WBCRC slab was proposed that can provide reference for design of structure engineering.

关 键 词：包容型再生混凝土 混凝土板 冲切承载力 试验 计算方法 

分 类 号：TU528.01[建筑科学—建筑技术科学]