摘要
通过对20个混凝土抗压强度为65.3～84.9 MPa的型钢高强混凝土柱在轴力和水平荷载共同作用下的试验,对型钢高强混凝土柱的抗剪性能进行研究.试验主要考虑剪跨比、轴压比、配箍率和混凝土强度4个参数对构件抗剪性能的影响.由试验得到水平荷载下型钢高强混凝土柱的破坏形态,对剪跨比、轴压比、配箍率和混凝土强度对构件抗剪承载能力的影响进行分析,提出型钢高强混凝土柱抗剪承载能力的计算公式,该公式与我国现行混凝土结构设计规范中的斜截面承载能力计算公式相衔接,且计算结果偏于安全,可直接用于工程设计.
Based on twenty specimens with concrete strength varied from 65.3MPa to 84.9MPa subjected to constant axial compression force and horizontal load, the shear performance of steel reinforced high-strength concrete colunms is studied. Four factors, that is shear span ratio, axial compression ratio~ stirrup ratio and grade of concrete strength, are taken into consideration. Failure patterns of specimens are obtained and it is analyzed the influence of shear span ratio, axial compression ratio, stirrup ratio and grade of concrete strength on shear performance of steel reinforced high-strength columns. A calculating formula for shear bearing capacity of steel reinforced high-strength columns is presented. This formula is consistent with the formula for shear strength in the current code （ GB 50010-2002 ）, whose calculating results tend to be safe.
出处
《工业建筑》
CSCD
北大核心
2007年第3期90-94,共5页
Industrial Construction
基金
宁波市博士(青年)基金项目(2005A620031)
宁波市自然科学基金项目(2006A610096)
浙江省教育厅科研计划项目(20061631)。
关键词
型钢高强混凝土
柱
抗剪性能
破坏形态
抗剪承载力
steel reinforced high-strength concrete column shear performance failure patterns shear bearing capacity
