内嵌钢管预应力装配式桥墩抗震性能研究
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摘要
提出了一种内嵌钢管预应力装配式桥墩PEAP模型,为研究PEAP模型的抗震性能,设计了3个PEAP模型的低周反复荷载试验,对试件的滞回曲线、骨架曲线、耗能能力、延性等抗震性能指标进行分析,并基于开源有限元程序Open SEES,提出了PEAP模型的数值模拟计算方法,对3个PEAP模型的低周反复荷载试验进行数值模拟并与试验结果对比。通过对比,验证了笔者的数值模型的可靠性和合理性,可为进一步研究节段装配式桥墩的地震灾变行为研究提供参考。
A new type of prestressed assembled bridge piers with embedded steel tube( simplified as PEAP model) was proposed. In order to study the seismic behavior of PEAP model,a low cyclic loading test of 3 PEAP models was designed,which analyzed the seismic performances of specimen,such as hysteretic curve,skeleton curve,energy dissipation capacity and ductility. Based on the open source finite element program Open SEES,the calculation method of numerical simulation of PEAP model was proposed. The numerical simulation of the low cyclic loading test of 3 PEAP models was carried out and the results were compared with the test results. Through comparison,the reliability and rationality of the proposed numerical model is verified,which can provide a reference for the further study of seismic catastrophic behavior of segmental assembly bridge pier.
A new type of prestressed assembled bridge piers with embedded steel tube( simplified as PEAP model) was proposed. In order to study the seismic behavior of PEAP model,a low cyclic loading test of 3 PEAP models was designed,which analyzed the seismic performances of specimen,such as hysteretic curve,skeleton curve,energy dissipation capacity and ductility. Based on the open source finite element program Open SEES,the calculation method of numerical simulation of PEAP model was proposed. The numerical simulation of the low cyclic loading test of 3 PEAP models was carried out and the results were compared with the test results. Through comparison,the reliability and rationality of the proposed numerical model is verified,which can provide a reference for the further study of seismic catastrophic behavior of segmental assembly bridge pier.
引文
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[2]王志强,葛继平,魏红一,等.节段拼装桥墩抗震性能研究进展[J].地震工程与工程振动,2009,29(4):147-154.WANG Zhiqiang,GE Jiping,WEI Hongyi,et al.Recent development in seismic research of segmental bridge columns[J].Journal of Earthquake Engineering and Engineering Vibration,2009,29(4):147-154.
[3]孙治国,司炳君,王东升,等.钢筋混凝土桥墩震后修复技术研究综述[J].地震工程与工程震动,2009,29(5):128-132.SUN Zhiguo,SI Bingjun,WANG Dongsheng,et al.Review on the repair techniques for earthquake damaged RC bridge piers[J].Earthquake Engineering and Engineering Vibration,2009,29(5):128-132.
[4]中华人民共和国建设部.建筑抗震试验方法规程:JGJ 101—1996[S].北京:中国建筑工业出版社,1997.Ministry of Construction of the People’s Republic of China.Specification of Testing Methods for Earthquake Resistant Building:JGJ 101—1996[S].Beijing:China Architecture&Building Press,1997.
[5]SILVIA M,FRANK M,MICHAEL H.Open System for Earthquake Engineering Simulation User Manual[M].California:Pacific Earthquake Engineering Research Center,University of California,Berkeley,2005.
[6]YEH Y K,MO Y L,YANG C Y.Seismic performance of rectangular hollow bridge columns[J].Journal of Structural Engineering-ASCE,2002,128(1):60-68.
[7]MANDER J B,PRIESTLEY M J N,PARK R.Observed stressstrain behavior of confined concrete[J].Journal of Structural Engineering-ASCE,1988,114(8):1827-1849.
[8]MANDER J B,PRIESTLEY M J N,PARK R.Theoretical stressstrain model for confined concrete[J].Journal of Structural Engineering-ASCE,1988,114(8):1804-1826.
[9]EL-SHEIKH M,PESSIKI S,SAUSE R,et al.Moment rotation behavior of unbonded post-tensioned precast concrete beam-column connections[J].ACI Structural Journal,2000,97(1):122-131.
[10]中华人民共和国住房和城乡建设部.混凝土结构设计规范:GB50010—2010[S].北京:中国建筑工业出版社,2011.Housing and Urban-rural Development of the People’s Republic of China.Code for Design of Concrete Structures:GB 50010—2010[S].Beijing:China Architecture and Building Press,2011.