HRB500级钢筋轻骨料混凝土梁受剪性能试验研究  

Experimental study on shear behavior of HRB500 reinforced lightweight aggregate concrete beams

作　　者：苗方利 濮正豪 Miao Fangli;Pu Zhenghao(Zhengzhou University of Industrial Technology, Zhengzhou 451150, China)

机构地区：[1]郑州工业应用技术学院建筑工程学院

出　　处：《山西建筑》2019年第16期26-28,共3页Shanxi Architecture

基　　金：河海大学中央高校基本科研业务专项资金(2012B02314);中国博士后科学基金(2012M511193);江苏省博士后科研计划项目(1102073C)资助

摘　　要：对5根HRB500级钢筋轻骨料混凝土梁进行试验,研究荷载作用下梁的破坏形态、挠度变化规律、钢筋和混凝土应变发展特点等。得出:HRB500级钢筋轻骨料混凝土梁受剪破坏大致可分为四个阶段(弹性工作阶段、竖向裂缝发展阶段、斜裂缝发展阶段和破坏阶段);剪跨比对梁的受剪破坏形态影响较大;使用阶段荷载作用下梁挠度符合我国现行规范限值要求。In order to study the failure mode, the change rule of deflection, and the strain development characteristics of the reinforcement concrete, five HRB500 reinforced lightweight aggregate concrete beams are tested. It is concluded that the shear failure of HRB500 reinforced lightweight aggregate concrete beams can be roughly divided into four stages(elastic stage, vertical fracture development stage, oblique fracture development stage,failure stage). The shear failure pattern of beam is greatly affected by with shear span ratio. The deflection of the beam under the stage load conforms to the limit value of current code in China.

关 键 词：HRB500 轻骨料混凝土梁 跨中挠度 应变 

分 类 号：TU317[建筑科学—结构工程]