Performance-based probabilistic liquefaction-induced ground settlement procedure

IF 3.1 2区工程技术 Q2 ENGINEERING, CIVIL

Earthquake Spectra Pub Date : 2024-03-19 DOI:10.1177/87552930241234289

Franklin Olaya, Jonathan Bray, Norman Abrahamson

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引用次数: 0

Abstract

Performance-based procedures represent an improvement over current state-of-practice procedures that treat the assessment of seismic demand and engineering response parameters independently. Procedures used in current practice generally provide estimates of liquefaction-induced ground settlement that are inconsistent with the desired ground settlement hazard level. A recently developed probabilistic procedure to estimate liquefaction-induced ground settlement is employed to develop a new performance-based procedure that estimates ground settlement which accounts for key sources of uncertainty. The ground-motion intensity and ground settlement estimations are integrated in the proposed procedure to produce hazard curves for liquefaction-induced ground settlement. The hazard curve for ground settlement links different hazard levels with their corresponding values of ground settlement by evaluating a wide range of ground-motion intensities and site characterization parameters with their associated uncertainties. The proposed performance-based procedure also permits the evaluation of different sources of uncertainty and their effects on the ground settlement estimate.

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基于性能的液化诱发地面沉降概率程序

与目前将地震需求评估和工程响应参数独立处理的实践程序相比，基于性能的程序是一种改进。目前实践中使用的程序通常提供的液化诱发地面沉降估算值与期望的地面沉降危险等级不一致。最近开发的一种估算液化诱发的地面沉降的概率程序被用于开发一种新的基于性能的程序，该程序估算地面沉降，并考虑了不确定性的主要来源。地动强度和地面沉降估算被整合到拟议的程序中，以生成液化诱发的地面沉降危险曲线。通过评估各种地动强度和场地特征参数及其相关的不确定性，地面沉降危险曲线将不同的危险等级与相应的地面沉降值联系起来。拟议的基于性能的程序还允许对不同的不确定性来源及其对地面沉降估算的影响进行评估。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Earthquake Spectra 工程技术-工程：地质

CiteScore

8.40

自引率

12.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Earthquake Spectra, the professional peer-reviewed journal of the Earthquake Engineering Research Institute (EERI), serves as the publication of record for the development of earthquake engineering practice, earthquake codes and regulations, earthquake public policy, and earthquake investigation reports. The journal is published quarterly in both printed and online editions in February, May, August, and November, with additional special edition issues. EERI established Earthquake Spectra with the purpose of improving the practice of earthquake hazards mitigation, preparedness, and recovery — serving the informational needs of the diverse professionals engaged in earthquake risk reduction: civil, geotechnical, mechanical, and structural engineers; geologists, seismologists, and other earth scientists; architects and city planners; public officials; social scientists; and researchers.