现浇预应力混凝土框架节点抗震性能研究进展
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摘要
预应力可影响钢筋混凝土框架节点的抗震性能,但其对核心区抗剪强度的贡献仍存在争论。重点从平面框架节点和空间框架节点两方面对预应力混凝土(PC)节点的抗震性能试验研究进展进行了论述。采用38组PC节点试验数据对节点现行抗剪设计公式进行了评估,结果表明,现行设计公式均不同程度地偏于保守,且预测精度普遍较低。指出了目前研究的不足和以后的研究方向。
The prestress can influence seismic behavior of reinforced concrete beam-column connections,but its beneficial effect on shear strength of joint cores is still controversial.The research on seismic behavior of cast-in-place prestressed concrete beam-column connections subjected to both unidirectional and bidirectional loading was mainly discussed.38test PC beam-column connections were also collected to evaluate the existing design formulae for shear,and the results demonstrated that all these formulae were not only relatively conservative but had rather low prediction accuracy.Finally,the limitations of current studies and research trends were further mentioned.
The prestress can influence seismic behavior of reinforced concrete beam-column connections,but its beneficial effect on shear strength of joint cores is still controversial.The research on seismic behavior of cast-in-place prestressed concrete beam-column connections subjected to both unidirectional and bidirectional loading was mainly discussed.38test PC beam-column connections were also collected to evaluate the existing design formulae for shear,and the results demonstrated that all these formulae were not only relatively conservative but had rather low prediction accuracy.Finally,the limitations of current studies and research trends were further mentioned.
引文
[1]GB50010-2010.混凝土结构设计规范[S].北京:中国建筑工业出版社,2010.
[2]NZS3101-2006.Concrete structures standard.Part1-The design of concrete structures[S].Wellington:Standrds New Zealand,2006.
[3]JGJ140-2004.预应力混凝土结构抗震设计规程[S].北京:中国建筑工业出版社,2004.
[4]Park R,Thompson K J.Cyclic load test on prestressed and partially prestressed beam-column joints[J].PCI Journal,1977,22(5):84-110.
[5]Hamahara M,Nishiyama M,Okamoto H,et al.Design for shear of prestressed concrete beam-column core[J].Journal of Structural Engineering,2007,133(11):1520-1530.
[6]Kashiwazaki T,Noguchi H.Structural performances of prestressed concrete interior beam-column joints[C]∥In Proceedings of the 12th World Conference on Earthquake Engineering.Auckland:12WCEE,2000.
[7]Nishiyama M,Wei Y.Effect of post-tensioning steel anchorage location on seismic performance of exterior beam-to-column joints[J].PCI Journal,2007,52(2):1-13.
[8]Uchida R,Hamahara M,Satoh N,et al.Effects of prestress on ultimate strength of concrete beam-interior column frame assemblies[J].Journal of Structural and Construction Engineering,2004,69(583):107-113.
[9]Hamahara M,Harai N,Sakanashi,et al.Effects of a spect ratio of joint cores on ultimate strength of prestressed concrete beam-interior column joint assembles[J].Journal of Structural and Construction Engineering,2010,75(652):1129-1137.
[10]框架节点专题研究组.低周反复荷载作用下钢筋混凝土框架梁柱节点核心区抗剪强度的试验研究[J].建筑结构学报1983,4(6):1-17
[11]唐九如.部分预应力框架梁柱节点在反复荷载下的受力性能[J].建筑结构学报,1987,8(5):1-15.
[12]唐九如,陈俊辉,花霞萍.预应力混凝土框架节点受剪承载力分析[J].建筑结构,1992,32(1):20-26.
[13]孟少平,韩重庆.预应力框架节点抗震设计中两个问题的探讨[J].工程抗震,1998(4):3-7.
[14]陈元豹.无粘结部分预应力混凝土框架结构的应用及其抗震性能研究[D].福州:福州大学,2003.
[15]张少坤.无粘结预应力混凝土框架边节点抗震试验研究[D]北京:北京工业大学,2007.
[16]洪健.预应力及水平加腋对混凝土框架节点承载力影响研究[D].上海:同济大学,2007.
[17]邹力强.预应力混凝土水平加腋框架节点弹性分析[D].上海:同济大学,2007.
[18]薛伟辰,姜东升,陈以一,等.预应力混凝土空间节点抗震性能试验研究[J].建筑结构学报,2007,28(1):43-51,58.
[19]李旭红,房贞政,陈浩德.预应力混凝土空间框架节点二维拟静力试验研究[J].地震工程与工程振动,2009,29(1):70-77.
[20]李旭红,房贞政.预应力混凝土空间框架角节点二维抗震性能试验研究[J].福州大学学报:自然科学版,2010,38(2):252-258.
[2]NZS3101-2006.Concrete structures standard.Part1-The design of concrete structures[S].Wellington:Standrds New Zealand,2006.
[3]JGJ140-2004.预应力混凝土结构抗震设计规程[S].北京:中国建筑工业出版社,2004.
[4]Park R,Thompson K J.Cyclic load test on prestressed and partially prestressed beam-column joints[J].PCI Journal,1977,22(5):84-110.
[5]Hamahara M,Nishiyama M,Okamoto H,et al.Design for shear of prestressed concrete beam-column core[J].Journal of Structural Engineering,2007,133(11):1520-1530.
[6]Kashiwazaki T,Noguchi H.Structural performances of prestressed concrete interior beam-column joints[C]∥In Proceedings of the 12th World Conference on Earthquake Engineering.Auckland:12WCEE,2000.
[7]Nishiyama M,Wei Y.Effect of post-tensioning steel anchorage location on seismic performance of exterior beam-to-column joints[J].PCI Journal,2007,52(2):1-13.
[8]Uchida R,Hamahara M,Satoh N,et al.Effects of prestress on ultimate strength of concrete beam-interior column frame assemblies[J].Journal of Structural and Construction Engineering,2004,69(583):107-113.
[9]Hamahara M,Harai N,Sakanashi,et al.Effects of a spect ratio of joint cores on ultimate strength of prestressed concrete beam-interior column joint assembles[J].Journal of Structural and Construction Engineering,2010,75(652):1129-1137.
[10]框架节点专题研究组.低周反复荷载作用下钢筋混凝土框架梁柱节点核心区抗剪强度的试验研究[J].建筑结构学报1983,4(6):1-17
[11]唐九如.部分预应力框架梁柱节点在反复荷载下的受力性能[J].建筑结构学报,1987,8(5):1-15.
[12]唐九如,陈俊辉,花霞萍.预应力混凝土框架节点受剪承载力分析[J].建筑结构,1992,32(1):20-26.
[13]孟少平,韩重庆.预应力框架节点抗震设计中两个问题的探讨[J].工程抗震,1998(4):3-7.
[14]陈元豹.无粘结部分预应力混凝土框架结构的应用及其抗震性能研究[D].福州:福州大学,2003.
[15]张少坤.无粘结预应力混凝土框架边节点抗震试验研究[D]北京:北京工业大学,2007.
[16]洪健.预应力及水平加腋对混凝土框架节点承载力影响研究[D].上海:同济大学,2007.
[17]邹力强.预应力混凝土水平加腋框架节点弹性分析[D].上海:同济大学,2007.
[18]薛伟辰,姜东升,陈以一,等.预应力混凝土空间节点抗震性能试验研究[J].建筑结构学报,2007,28(1):43-51,58.
[19]李旭红,房贞政,陈浩德.预应力混凝土空间框架节点二维拟静力试验研究[J].地震工程与工程振动,2009,29(1):70-77.
[20]李旭红,房贞政.预应力混凝土空间框架角节点二维抗震性能试验研究[J].福州大学学报:自然科学版,2010,38(2):252-258.
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