叉桩扭角对高桩码头抗震性能影响分析
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摘要
以高桩码头双轴对称桩基码头结构段为研究对象,建立空间有限元模型,采用振型分解反应谱法对水平地震作用横向、纵向输入进行了地震动力响应分析,对比分析了叉桩扭角变化对结构响应的影响,讨论了纵向斜桩对结构抗震性能的影响。计算结果表明:横向水平地震作用下,除桩轴力外,其结构的响应随着叉桩扭角的增大而增大;纵向水平地震作用下,桩轴力随扭角的增大而增大,其他结构响应则随扭角的增大而减小;纵向水平地震作用下结构的动力响应较大,增加纵向斜桩能更好的抵抗纵向水平地震荷载,但增加纵向斜桩其最大桩轴力响应将较无纵向斜桩时增加较多。
Taken the symmetrical arrangement type of high-pile wharf as the research object,the space finite element model was established.With the mode-superposition response spectrum method,the dynamic response of the earthquake under the horizontal earthquake action was analyzed.The impact of torsion angle variation on the structural responses was compared,and the impact of longitudinal inclined piles on the structural seismic performance was discussed.The calculation results show that under the condition of transverse earthquake action,besides axial force of piles,the structural responses are increasing with the increase of torsion angle of fork piles.Under the condition of longitudinal earthquake action,the response of axial force of piles is increasing with the increase of torsion angle of fork piles.The structural dynamic responses are larger under the longitudinal earthquake action.Comparing with the values without adding piles,the maximum axial force of added piles is largely increased.
Taken the symmetrical arrangement type of high-pile wharf as the research object,the space finite element model was established.With the mode-superposition response spectrum method,the dynamic response of the earthquake under the horizontal earthquake action was analyzed.The impact of torsion angle variation on the structural responses was compared,and the impact of longitudinal inclined piles on the structural seismic performance was discussed.The calculation results show that under the condition of transverse earthquake action,besides axial force of piles,the structural responses are increasing with the increase of torsion angle of fork piles.Under the condition of longitudinal earthquake action,the response of axial force of piles is increasing with the increase of torsion angle of fork piles.The structural dynamic responses are larger under the longitudinal earthquake action.Comparing with the values without adding piles,the maximum axial force of added piles is largely increased.
引文
[1]JTJ254-98,港口工程桩基规范局部修订(桩的水平承载力设计)[S].
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[5]李向梅.高桩码头叉桩抗震性能研究及其有限元分析[D].武汉:武汉理工大学,2007.
[6]李颖,贡金鑫.有斜桩和无斜桩高桩码头地震反应的非线性有限元分析[J].水利水运工程学报,2011(2):2-13.LI Y,GONG J X.Nonlinear finite element analysis for seismic performance of wharf structures with and without batter pilesattached[J].Hydro-science and engineering,2011(2):2-13.
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[9]Charles W R.Seismic Performance of Pile-Wharf Connection[D].California:Pacific Earthquake Engineering Research Center,2001.
[10]徐龙军,谢礼力,胡进军.抗震设计谱的发展及相关问题综述[J].世界地震工程,2007,23(2):46-57.XU L J,XIE L L,HU J J.The review of development and certain problems in seismic design spectra[J].World Information onEarthquake Engineering,2007,23(2):46-57.
[11]LONG B H,ROEDER C W.Dynamic Performance of Pile Wharf Structural System[R].Washington:University of Washington,2004.
[12]赵光恒.结构动力学[M].北京:中国水利水电出版社,1996.
[13]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007.
[14]JTJ225-98,水运工程抗震设计规范[S].
[2]Nason J M,Stephen E D,Scott M S.The Seismic Performance of Piles in waterfront Applications[C]//In:ASCE Conf.Proc.America′sPorts-Gateways to the Global Economy Proceedings of Ports Conference 2001.USA:ASCE,2001:1-10.
[3]Nason J M,Stephen E D,Scott M S,et al.Centrifuge Seismic Modeling of Pile-Supported Wharves[J].Geotechnical TestingJournal,2007,30(5):1-11.
[4]龙炳煌,雷立志.高桩码头叉桩震害分析及设计建议[J].中国港湾建设,2007(1):7-10.LONG B H,LEI L Z.Seismic Analysis of and Design Suggestions for Batter-Piles in Pile-Wharfs[J].China Harbour Engineering,2007(1):7-10.
[5]李向梅.高桩码头叉桩抗震性能研究及其有限元分析[D].武汉:武汉理工大学,2007.
[6]李颖,贡金鑫.有斜桩和无斜桩高桩码头地震反应的非线性有限元分析[J].水利水运工程学报,2011(2):2-13.LI Y,GONG J X.Nonlinear finite element analysis for seismic performance of wharf structures with and without batter pilesattached[J].Hydro-science and engineering,2011(2):2-13.
[7]陶桂兰,王定.水平地震作用下高桩码头结构响应谱分析[J].中国港湾建设,2012,1(1):9-11.TAO G L,WANG D.Spectrum response analysis of high-pile wharf under horizontal earthquake[J].China Harbour Engineering,2012,1(1):9-11.
[8]李培振,吕西林.考虑土—结构相互作用的高层建筑抗震分析[J].地震工程与工程振动,2004,24(3):130-138.LI P Z,LV X L.Considering the interaction between soil-structure of the high-rise building seismic analysis[J].EarthquakeEngineering and Engineering Vibration,2004,24(3):130-138.
[9]Charles W R.Seismic Performance of Pile-Wharf Connection[D].California:Pacific Earthquake Engineering Research Center,2001.
[10]徐龙军,谢礼力,胡进军.抗震设计谱的发展及相关问题综述[J].世界地震工程,2007,23(2):46-57.XU L J,XIE L L,HU J J.The review of development and certain problems in seismic design spectra[J].World Information onEarthquake Engineering,2007,23(2):46-57.
[11]LONG B H,ROEDER C W.Dynamic Performance of Pile Wharf Structural System[R].Washington:University of Washington,2004.
[12]赵光恒.结构动力学[M].北京:中国水利水电出版社,1996.
[13]王新敏.ANSYS工程结构数值分析[M].北京:人民交通出版社,2007.
[14]JTJ225-98,水运工程抗震设计规范[S].
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