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DISPLACEMENT-BASED PROCEDURES FOR SEISMIC DESIGN OF PILE-SUPPORTED WHARVESAT THE PORT OF LOS ANGELES AND THE PORT OF LONG BEACH

机译：洛杉矶港和长滩港桩支撑码头抗震设计的基于位移的程序

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Over the past several years, the Ports of Los Angeles (POLA) and Long Beach (POLB) have undertaken numerous engineering studies to improve the seismic design of pile-supported wharf structures. It was concluded that the displacement-based seismic design methodology results in more robust and economical wharf structures. The displacement-based design allows plastic hinges to form at predetermined locations, which can be readily identified and repaired after an earthquake. Both Ports sponsored and funded specialized studies and an experimental program at the University of California at San Diego (UCSD) to confirm seismic design assumptions. Also, port-wide ground motion studies were completed to develop acceleration and displacement response spectra and time-histories for the different levels of earthquakes specific to each Port. Displacement-based seismic design procedures for pile-supported container wharves are included in two separate documents: "The Port of Los Angeles Code for Seismic Design, Upgrade and Repair of Container Wharves" and the "POLB Wharf Design Criteria". This paper addresses the seismic, structural, geotechnical and soil-structure interaction aspects of these documents and discusses various studies that were undertaken to support the development of the displacement-based seismic design.
机译：在过去的几年中，洛杉矶港口（POLA）和长滩（POLB）进行了许多工程研究，以改善桩基码头结构的抗震设计。结论是，基于位移的抗震设计方法可产生更坚固，更经济的码头结构。基于位移的设计允许在预定位置形成塑料铰链，在地震后可以很容易地识别和修复这些铰链。 Ports均赞助并资助了加利福尼亚大学圣地亚哥分校（UCSD）的专业研究和实验计划，以确认地震设计假设。此外，完成了整个港口的地震动研究，以针对每个港口特定级别的地震开发加速度和位移响应谱以及时程。基于桩的集装箱码头的基于位移的抗震设计程序包含在两个单独的文件中：“洛杉矶港口集装箱码头的抗震设计，升级和维修规范”和“ POLB码头设计准则”。本文介绍了这些文件在地震，结构，岩土和土-结构相互作用方面的问题，并讨论了为支持基于位移的地震设计的发展而进行的各种研究。

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