预制拼装桥墩连接构造抗震性能分析
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摘要
为研究不同位置灌浆套筒连接的预制拼装桥墩的抗震性能,利用有限元软件建立了灌浆套筒分别位于桥墩和基础的两种有限元模型,并与现浇模型做对比,进行拟静力模拟实验.分析比较了两类不同预制构件先混凝土桥墩的损伤部位和破坏形态,并从滞回曲线、耗能性能、抗力衰减、刚度退化、骨架曲线、延性等方面分析了两类构件的抗震性能,结果表明.用灌浆套筒连接的预制桥墩各方面抗震性能与现浇桥墩基本相当,都具有较好的抗震性能.在合理的结构设计下,两种预制桥墩都可以满足抗震要求,实际工程中设计人员可以根据实际情况选择采用.
In order to study the seismic performance of precast segmental bridge piers with different position grouted sleeves, two finite element models of grouting sleeves at piers and foundations were established by the finite element software, and one cast-in-place model was used to conduct pseudo-static tests. The damage locations and failure modes of two types of precast segmental bridge piers were analyzed and compared, and the seismic performance of two types of components was analyzed from hysteretic curve, energy dissipation, resistance attenuation, stiffness degradation, skeleton curve, ductility and so on. The results show that the seismic performance of prefabricated piers connected by grouting sleeves is basically the same as that of cast-in-situ piers in all aspects, and both have good seismic performance. Under the reasonable structural design, the two precast piers can meet the seismic requirements, and designers can choose to adopt them according to actual conditions in actual projects.
In order to study the seismic performance of precast segmental bridge piers with different position grouted sleeves, two finite element models of grouting sleeves at piers and foundations were established by the finite element software, and one cast-in-place model was used to conduct pseudo-static tests. The damage locations and failure modes of two types of precast segmental bridge piers were analyzed and compared, and the seismic performance of two types of components was analyzed from hysteretic curve, energy dissipation, resistance attenuation, stiffness degradation, skeleton curve, ductility and so on. The results show that the seismic performance of prefabricated piers connected by grouting sleeves is basically the same as that of cast-in-situ piers in all aspects, and both have good seismic performance. Under the reasonable structural design, the two precast piers can meet the seismic requirements, and designers can choose to adopt them according to actual conditions in actual projects.
引文
[1] 刘丰.节段拼装预应力混凝土桥墩拟静力试验和分析研究[D].上海:同济大学,2008.
[2] 李田田.城市高架节段拼装桥墩构造及抗震性能研究[D].上海:同济大学,2012.
[3] MARSH M L,WERNLI M,GARRETT B E,et al.Application of accelerated bridge construction connections in moderate-to-high seismic regions[D].Washington DC:Transportation Research Board,2011.
[4] WANG Z Q,GE J P,WEI H Y.Seismic performance of precast hollow bridge piers with different construction details[J].Frontiers of Structural an Civil Engineering,2014,8(4):399-413.
[5] 韩瑞龙,施卫星,周洋.灌浆套筒连接技术及其应用[J].结构工程师,2011,27(3):149-153.
[6] BELLERI A,RIVA P.Seismic performance and retrofit of precast concrete grouted sleeve connections[J].PCI Journal,2012,51(1):97-109.
[7] HABER Z B,SAIIDI M,SANDERS D H.Seismic performance of precast column with mechanically spliced column-footing connection[J].ACI Structural Journal,2014,111(3):639-650.
[8] HABER Z B.Precast column-footing connections for accelerated bridge construction in high seismic zones[D].Reno:University of Nevada-Reno,2013.
[9] TAZARV M.Next generation of bridge columns for accelerated bridge construction in high seismic zones[D].Reno:University of Nevada-Reno,2014.
[10] 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.
[11] 王志强,卫张震,魏红一,等.预制拼装连接件形式对桥墩抗震性能的影响[J].中国公路学报,2017,30(5):74-80.
[12] 重庆交通科研设计院.公路桥梁抗震设计细则:JTGTB02—01—2008[S].北京:人民交通出版社,2008.
[2] 李田田.城市高架节段拼装桥墩构造及抗震性能研究[D].上海:同济大学,2012.
[3] MARSH M L,WERNLI M,GARRETT B E,et al.Application of accelerated bridge construction connections in moderate-to-high seismic regions[D].Washington DC:Transportation Research Board,2011.
[4] WANG Z Q,GE J P,WEI H Y.Seismic performance of precast hollow bridge piers with different construction details[J].Frontiers of Structural an Civil Engineering,2014,8(4):399-413.
[5] 韩瑞龙,施卫星,周洋.灌浆套筒连接技术及其应用[J].结构工程师,2011,27(3):149-153.
[6] BELLERI A,RIVA P.Seismic performance and retrofit of precast concrete grouted sleeve connections[J].PCI Journal,2012,51(1):97-109.
[7] HABER Z B,SAIIDI M,SANDERS D H.Seismic performance of precast column with mechanically spliced column-footing connection[J].ACI Structural Journal,2014,111(3):639-650.
[8] HABER Z B.Precast column-footing connections for accelerated bridge construction in high seismic zones[D].Reno:University of Nevada-Reno,2013.
[9] TAZARV M.Next generation of bridge columns for accelerated bridge construction in high seismic zones[D].Reno:University of Nevada-Reno,2014.
[10] 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.
[11] 王志强,卫张震,魏红一,等.预制拼装连接件形式对桥墩抗震性能的影响[J].中国公路学报,2017,30(5):74-80.
[12] 重庆交通科研设计院.公路桥梁抗震设计细则:JTGTB02—01—2008[S].北京:人民交通出版社,2008.