WU Wenpeng,LIU Sisi,LIANG Peng,et al.Influence of Hydrodynamic Pressure and Pile⁃Soil Interaction (PSI) on Seismic Performance of High Pier Bridges in Deep Water[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(01):67-74.
WU Wenpeng,LIU Sisi,LIANG Peng,et al.Influence of Hydrodynamic Pressure and Pile⁃Soil Interaction (PSI) on Seismic Performance of High Pier Bridges in Deep Water[J].Journal of Disaster Prevention and Mitigation Engineering,2021,41(01):67-74. DOI: 10.13409/j.cnki.jdpme.2021.01.008.
Influence of Hydrodynamic Pressure and Pile⁃Soil Interaction (PSI) on Seismic Performance of High Pier Bridges in Deep Water
A high pier long-span continuous rigid frame bridge in the western reservoir region of China is taken as the engineering background. The hydrodynamic pressure, pile-soil interaction (PSI) and the influence of their combined effect were considered to determine six different analysis cases. The finite element models of the six analysis cases were established, respectively, by using the source code computational platform OpenSEES. Then, two groups of ground motions were applied to conduct the nonlinear time-history analysis, in order to investigate the influence of hydrodynamic pressure and PSI on seismic performance of high pier long-span bridges in deep water. The results show that the effect of hydrodynamic pressure and PSI can reduce the vibration frequency of the high-pier long-span bridge, and their influence is mainly reflected in high order modes with more participation rates of vibration mode for the substructure. The effect of hydrodynamic pressure will increase the dynamic response of the high piers under earthquake action. However, the PSI effect on the results of nonlinear time history analysis performs no obvious rules. When both of the hydrodynamic pressure and PSI are considered, the seismic response of high pier bridges in deep-water is not simple mutual promotion or offset, but related to the intensity of ground motion, spectrum characteristics, and so on. The "
p
—
y
curve" method is more suitable for seismic design to simulate the PSI effect, if the horizontal displacement of the pile top of a bridge structure is larger under strong earthquake action.
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references
陈乐生 . 汶川地震公路震害调查-桥梁 [M]. 北京 : 人民交通出版社 , 2012 .
Chen L Sh . Report on highway’s damage in the Wenchuan Earthquake-bridge [M]. Beijing : China Communications Press , 2012 . (in Chinese)
Guidelines for seismic design of highway bridges : JTG/TB 02-01—2008 [S]. Beijing : China Communication Press , 2008 . (in Chinese)
Boulanger R W , Curras C J , Kutter B L , et al . Seismic soil-pile-structure interaction experiments and analyses [J]. Journal of Geotechnical & Geoenvironmental Engineering , 1999 , 125 ( 9 ): 750 - 759 .
Yan B , Wang Zh Q , Wang J J . Study on comparison of p — y method and m-method in computation of bridge pile foundations [J]. Structural Engineers , 2007 , 23 ( 4 ): 62 - 68 . (in Chinese)
Lyu Y , Liu Zh , Li Zh X . Seismic response analysis for unequal height pier bridges considering soil-pile interaction [J]. Journal of Vibration and Shock , 2016 , 35 ( 23 ): 114 - 120 . (in Chinese)
Wang Z , Dueñas-Osorio L , Padgett J E . Influence of soil-structure interaction and liquefaction on the isolation efficiency of a typical multispan continuous steel girder bridge [J]. Journal of Bridge Engineering , 2014 , 19 ( 8 ): A4014001 .
Mallick M , Raychowdhury P . Seismic analysis of highway skew bridges with nonlinear soil-pile interaction [J]. Transportation Geotechnics , 2015 , 3 : 36 - 47 .
Liu Ch H , Tang L , Ling X Zh , et al . Simplified method for seismic analysis of bridge pile group foundation in liquefiable soils [J]. Journal of Disaster Prevention and Mitigation Engineering , 2014 , 34 ( 5 ): 566 - 570 . (in Chinese)
Zhang X Y , Tang L , Ling X Zh , et al . Analysis on characteristics of dynamic p — y curves for soil-pile interaction in liquefiable ground [J]. Journal of Disaster Prevention and Mitigation Engineering , 2014 , 34 ( 5 ): 619 - 625 . (in Chinese)
Westergaard H M . Water pressures on dams during earthquakes [J]. Transactions of American Society of Civil Engineers , 1933 , 98 ( 2 ): 418 - 432 .
Huang X , Li Zh X . Influence of hydro dynamic pressure on seismic response of bridge piers in deep water [J]. China Civil Engineering Journal , 2011 , 44 ( 1 ): 65 - 73 . (in Chinese)
刘振宇 . 深水桥梁的地震响应研究 [D]. 成都 : 西南交通大学 , 2008 .
Liu Zh Y . The earthquake response study of deep-water bridges [D]. Chengdu : Southwest Jiaotong University , 2008 . (in Chinese)
Li F R , Chen G X , Wang Zh H . Seismic responses of single-column pier considering the effects of hydrodynamic pressure [J]. Earthquake Engineering and Engineering Dynamics , 2008 , 28 ( 2 ): 114 - 121 . (in Chinese)
杨万理 . 深水桥梁动水压力分析方法研究 [D]. 成都 : 西南交通大学 , 2012 .
Yang W L . Study on hydrodynamic analysis methods of deep-water bridges [D]. Chengdu : Southwest Jiaotong University , 2012 . (in Chinese)
Code for design of ground base and foundation of highway bridge and culverts : JTG D63—2007 [S]. Beijing : China Communication Press , 2007 . (in Chinese)