不同轴压比下煤矸石骨料混凝土柱的受力性能试验研究  

EXPERIMENTAL RESEARCH ON MECHANICAL BEHAVIOR OF COAL GANGUE AGGREGATE CONCRETE PILLAR IN DIFFERENT AXIAL COMPRESSION RATIO

作　　者：李永靖[1] 邢洋[1] 韩俊俊[1] 

机构地区：[1]辽宁工程技术大学土木与交通学院,辽宁阜新123000

出　　处：《工业建筑》2016年第1期90-94,共5页Industrial Construction

基　　金：国家自然科学基金资助项目(51008148;51274111);辽宁省教育厅基金项目(L2013137)

摘　　要：为了确定煤矸石骨料混凝土在建筑工程中应用的可行性和承受荷载的能力,对煤矸石骨料混凝土柱进行往复加载基础试验,获得不同轴压比下混凝土柱的滞回曲线、钢筋应力-应变曲线,并对其受力性能进行分析。结果表明,随着轴压比的增大,混凝土柱的变形能力及耗能能力都变差,轴压比超过0.6后,柱破坏较严重;混凝土柱结构应加强架立筋的配筋设计;试件柱的刚度及极限承载力随着轴压比的增大,增加幅度不大;其受力性能符合一般承重结构的发展过程,但在实际使用煤矸石混凝土时应控制轴压比不宜过大。In order to determine feasibility and the ability to bear loads of the light-weight aggregate concrete in construction engineering application,the reciprocating loading base experiment on the concrete column under axial compression ratio was carried out,whose hysteretic curve and steel bar stress-strain curve were got, and its mechanical performance was analyzed. The results showed that with the increase of axial compression ratio,the deformation capacity and energy dissipation capacity of concrete columns were worse; when axial compression ratio was more than 0. 6 the column destruction was serious. Concrete column structure support stud reinforcement design should be strengthened; column stiffness and ultimate bearing capacity of the specimens,with the increase of axial compression ratio increased slightly. Their mechanical properties conformed to the development of the general bearing structure,but should be controlled in the actual use of coal gangue concrete,axial compression ratio should not be too big.

关 键 词：煤矸石 轴压比 往复加载 滞回曲线 钢筋应变 

分 类 号：TU37[建筑科学—结构工程]