钢筋混凝土剪力墙配箍参数设计方法试验研究
|
摘要
为了研究混凝土剪力墙边缘约束构件对其抗震性能的影响,进行了在相同高宽比、轴压比、混凝土强度和竖向配筋下,考虑不同边缘约束配箍参数,即边缘约束区长度和配箍特征值共5片剪力墙的低周反复荷载试验。对试验结果进行了分析,主要内容包括:破坏形态、极限位移及极限位移角、骨架曲线、滞回曲线和承载力。分析表明边缘约束配箍参数对其抗震性能影响显著,合适的边缘约束区长度和适当提高配箍特征值是改善其抗震性能的有效措施。在对试验结果分析的基础上,进一步推导了考虑剪力墙截面应变协调的情况下,RC剪力墙极限位移角在高宽比、轴压比、边缘约束配箍参数、混凝土强度和竖向分布配筋参数影响下的计算式,并通过对本课题组同一批15个试件试验结果统计得到了相关参数,给出了弯剪形混凝土剪力墙边缘约束区长度和最小配箍特征值的建议设计方法。最后用相关文献中试验数据对文中推导的极限位移角计算方法进行了验证。
To find the influence of the stirrup parameter and confined boundary zone on the RC shear walls seismic performance,five pieces of RC shear walls were made and tested under reversed cyclic quasi-static loading.The test results were also analyzed.The analysis includes the damage mode,limit drift ratios,skeleton curves,hysteretic curves and the bearing capacity.They indicate that the boundary element can influence the shear walls seismic performance remarkably,reasonably setting stirrup parameter and confined boundary zone can improve the seismic capacity.By use of coefficient of section's coordinated strain,limit drift ratios calculation formula was gived with the shear-span ratio,axial compression ratio,stirrup parameter,concrete strength and vertical distribution reinforcements.Test results from 15 specimens were used for the formula.At last design methods of stirrup parameter and confined boundary zone were gived and the formula of limit drift ratios was verified by other testing results from references.
To find the influence of the stirrup parameter and confined boundary zone on the RC shear walls seismic performance,five pieces of RC shear walls were made and tested under reversed cyclic quasi-static loading.The test results were also analyzed.The analysis includes the damage mode,limit drift ratios,skeleton curves,hysteretic curves and the bearing capacity.They indicate that the boundary element can influence the shear walls seismic performance remarkably,reasonably setting stirrup parameter and confined boundary zone can improve the seismic capacity.By use of coefficient of section's coordinated strain,limit drift ratios calculation formula was gived with the shear-span ratio,axial compression ratio,stirrup parameter,concrete strength and vertical distribution reinforcements.Test results from 15 specimens were used for the formula.At last design methods of stirrup parameter and confined boundary zone were gived and the formula of limit drift ratios was verified by other testing results from references.
引文
[1]章红梅,吕西林,鲁亮,等.边缘约束构件对钢筋混凝土剪力墙抗震性能的影响[J].地震工程与工程振动,2007,27(1):92-98.
[2]龚治国,吕西林,姬守中,等.不同边缘构件约束剪力墙抗震性能试验研究[J].结构工程师,2004,22(1):59-61.
[3]中华人民共和国建设部.GB 50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[4]王传志,滕智明.钢筋混凝土结构理论[M].北京:中国建筑工业出版社,1985.
[5]郑建岚,郑作樵.钢纤维钢筋高强混凝土柱的变形与延性计算[J].工程力学,1999,16(1):56-66.
[6]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.
[7]Thomsen IV J H,Wallace J W.Displacement-baseddesign of slender reinforced concrete structuralWalls-experimental verification[J].Journal of StructuralEngineering,2004,130(4):618-630.
[8]钱稼茹,徐福江.钢筋混凝土剪力墙基于位移的变形能力设计方法[J].清华大学学报(自然科学版),2007,47(3):1-4.
[9]Paulay T,Priestley M J N.Seismic Design ofReinforced Concrete and Masonry Buildings[M].NewYork:John Wiley&Sons,Inc,1992.
[10]李宏男,李兵.钢筋混凝土剪力墙抗震恢复力模型及试验研究[J].建筑结构学报,2004,25(5):35-42.
[11]蒋欢军,吕西林.新型耗能剪力墙模型低周反复荷载试验研究[J].世界地震工程,2000,16(3):63-67.
[12]周广强,周德源.钢筋混凝土剪力墙非线性有限元分析[J].结构工程师,2004(增刊):72-77.
[2]龚治国,吕西林,姬守中,等.不同边缘构件约束剪力墙抗震性能试验研究[J].结构工程师,2004,22(1):59-61.
[3]中华人民共和国建设部.GB 50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[4]王传志,滕智明.钢筋混凝土结构理论[M].北京:中国建筑工业出版社,1985.
[5]郑建岚,郑作樵.钢纤维钢筋高强混凝土柱的变形与延性计算[J].工程力学,1999,16(1):56-66.
[6]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.
[7]Thomsen IV J H,Wallace J W.Displacement-baseddesign of slender reinforced concrete structuralWalls-experimental verification[J].Journal of StructuralEngineering,2004,130(4):618-630.
[8]钱稼茹,徐福江.钢筋混凝土剪力墙基于位移的变形能力设计方法[J].清华大学学报(自然科学版),2007,47(3):1-4.
[9]Paulay T,Priestley M J N.Seismic Design ofReinforced Concrete and Masonry Buildings[M].NewYork:John Wiley&Sons,Inc,1992.
[10]李宏男,李兵.钢筋混凝土剪力墙抗震恢复力模型及试验研究[J].建筑结构学报,2004,25(5):35-42.
[11]蒋欢军,吕西林.新型耗能剪力墙模型低周反复荷载试验研究[J].世界地震工程,2000,16(3):63-67.
[12]周广强,周德源.钢筋混凝土剪力墙非线性有限元分析[J].结构工程师,2004(增刊):72-77.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心