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Seismic Performance of Pile-Supported Wharf Structures Considering Soil-Structure Interaction in Liquefied Soil

机译：考虑液-液相互作用的桩基码头结构抗震性能

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摘要

Many existing pile-supported marginal wharves within ports along the West Coast of the United States were designed in the late 1960s and early 1970s using the seismic design criteria available then, which were much less robust than the current criteria. As a result, structures designed using these criteria have often been severely damaged during the past earthquakes. This paper investigates the modal properties and vulnerability of such structures by using advanced structural and soil modeling procedures to perform two-dimensional nonlinear plane-strain seismic analyses using time histories of ground displacement and excess pore water pressures within the underlying soil embankment. Results show that the wharf structure experiences large permanent deformations and undergoes failure of the piles and pile-deck connections and pullout of batter piles in tension under large seismic events. Such failures were observed at the Port of Oakland during the 1989 Loma Prieta earthquake and also during other earthquakes throughout the world.
机译：1960年代末和1970年代初，美国当时西海岸各港口内许多现有的桩支撑边缘码头都是根据当时可用的抗震设计标准设计的，而这些设计标准的强度远不如当前标准。结果，在过去的地震中，使用这些标准设计的结构经常遭到严重破坏。本文通过使用先进的结构和土壤建模程序，利用地面位移的时间历史和地下土壤堤坝中的多余孔隙水压力，进行二维非线性平面应变地震分析，研究了此类结构的模态特性和脆弱性。结果表明，在大地震作用下，码头结构经历了较大的永久变形，承受了桩和桩-桩连接的破坏，以及面糊桩的拉拔。在1989年的Loma Prieta地震以及世界其他地震中，在奥克兰港都观察到了此类故障。

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  • 来源
    《Earthquake spectra》 |2012年第2期|p.729-757|共29页
  • 作者

    Abdollah Shafieezadeh; Reginald DesRoches; Glenn J. Rix; Stuart D. Werner;

  • 作者单位

    School of Civil and Environmental Engineering, Georgia Institute of Technology, 790 Atlantic Drive, Atlanta,GA 30332;

    School of Civil and Environmental Engineering, Georgia Institute of Technology, 790 Atlantic Drive, Atlanta,GA 30332;

    School of Civil and Environmental Engineering, Georgia Institute of Technology, 790 Atlantic Drive, Atlanta,GA 30332;

    Seismic Systems & Engineering Consultants, 8601 Skyline Boulevard, Oakland, CA 94611;

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