不同增强措施的高强混凝土短柱抗震性能试验研究  

Experimental study on seismic performance of high-strength concrete short columns with different strengthening measures

作　　者：柯晓军[1,2] 陈宗平[2,3] 薛建阳[1] 应武挡 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]广西大学土木建筑工程学院,广西南宁530004 [3]广西大学工程防灾与结构安全教育部重点实验室,广西南宁530004

出　　处：《建筑结构学报》2013年第S1期246-251,共6页Journal of Building Structures

基　　金：国家自然科学基金项目(50908057;51268004);广西自然科学基金项目(2013GXNSFDA019025)

摘　　要：为研究内置聚氯乙烯管材(PVC管)约束高强混凝土短柱的抗震性能,设计了2个新型约束高强混凝土短柱试件和3个传统约束高强混凝土短柱(普通箍筋约束高强混凝土、型钢高强混凝土以及内置钢管约束高强混凝土)对比试件进行低周反复加载试验。研究表明:所有约束高强混凝土短柱试件的破坏形态均为剪切斜压破坏;内置型钢、钢管以及PVC管约束高强混凝土试件较普通箍筋约束高强混凝土试件的滞回曲线饱满、极限变形大,其中内置PVC管试件随着PVC管径的增大,耗能及延性会劣化,但仍能满足结构抗震变形要求(μ≥3);采用内置型钢、钢管以及PVC管的措施能增强高强混凝土的抗震耗能及变形能力。To study the seismic performance of embedded PVC pipe confined reinforced high-strength concrete(PVCRHC) short column,two PVC-RHC short column specimens and three contrastive short column specimens of reinforced high-strength concrete confined by ordinary hoops,steel and steel tube respectively were designed for low cycle reversed loading test.Test results indicate that all specimens exhibit shear-diagonal compression failure.Reinforced high-strength concrete frame column specimens confined by steel,steel tube and PVC pipe possess plump hysteretic loops and great ultimate deformation capacity.For the PVC-RHC short column,its energy dissipating capacity and ductility can decline with the increasing of PVC piper diameter,while still meet seismic deformation requirement(μ≥ 3).By the strengthening measures of embedded steel,steel tube and PVC pipe,the seismic energy dissipating and deformation capacity of reinforced high-strength concrete frame columns can be effectively improved.

关 键 词：高强混凝土柱 PVC管 型钢混凝土 钢管混凝土 拟静力试验 抗震性能 

分 类 号：TU398.9[建筑科学—结构工程]