高强箍筋约束高强混凝土柱抗震性能研究综述  

Review of studies on the seismic behavior of high strength concrete columns with high strength transverse reinforcement

作　　者：司炳君[1] 孙治国[2] 王东升[2] 王清湘[1] 

机构地区：[1]大连理工大学,辽宁大连116024 [2]大连海事大学,辽宁大连116026

出　　处：《土木工程学报》2009年第4期1-9,共9页China Civil Engineering Journal

基　　金：国家自然科学青年基金(50308027);海岸和近海工程国家重点实验室基金(LP0504、LP0709)

摘　　要：强烈地震作用下，高强箍筋对保证高强混凝土柱的抗震能力具有重要意义。为研究高强箍筋约束高强混凝土柱的抗震性能，对国内外进行的混凝土抗压强度在40～112MPa、箍筋屈服强度在400～1569MPa的混凝土柱的抗震拟静力试验结果进行广泛总结，发现基于普通强度混凝土得出的钢筋混凝土柱压弯构件的矩形应力图、抗剪承载力及塑性铰区约束箍筋用量计算公式并不适用于高强箍筋约束的高强混凝土柱，对此应进行修正。对高强混凝土柱的延性抗震能力，一个基本结论为，对于承受较高轴压的高强混凝土柱，通过合理配置高强箍筋，是可以充分保证其延性和耗能能力的；而对于承受较低轴压的高强混凝土柱，只要箍筋间距满足要求，使用高强箍筋一般能保证其延性抗震性能。High strength transverse reinforcement plays a crucial role for the seismic performance of high strength concrete columns under severe earthquakes. A comprehensive study of the experimental results for reinforced concrete columns is undertaken to evaluate the seismic behavior of high strength concrete columns, with the concrete compression strength in the range of 40-112 MPa and the transverse reinforcement yield strength in the range of 400-1569 MPa. It is concluded that the design formulas for the rectangular stress block of concrete, the shear strength of the column and the confining reinforcement in the potential plastic hinge region developed for normal strength concrete are not applicable to high strength concrete columns confined by high strength transverse reinforcement. For the ductility behavior of high strength concrete columns under high levels of axial load, it is considered possible to obtain ductile behavior through proper use of high strength transverse reinforcement. It is easy to obtain ductile behavior for the columns under relatively low levels of axial load if the transverse spacing is properly designed.

关 键 词：高强混凝土柱 高强箍筋 抗震性能 延性 综述 

分 类 号：TU224[建筑科学—建筑设计及理论]