應用膨脹儀試驗建立土壤抗液化強度評估模式

Establishing Predictive Models for Evaluating Liquefaction Resistance of Soils Using Flat Dilatometer Test

10.6377/JA.200903.0113

蔡百祥(Der-Her Lee)；李德河(Pai-Hsiang Tsai)；龔東慶(Gordon Tung-Chin Kung)；吳建宏(Jian-Hong Wu)

膨脹儀試驗 ； 標準貫入試驗 ； 液化 ； 地震 ； Flat Dilatometer Test ； Standard Penetration Test ； Liquefaction ； Earthquake

建築學報

67期（2009 / 03 / 28）

113 - 130

繁體中文

本研究建立以膨脹儀試驗評估土壤抗液化強度評估模式。首先在五個不同場址同時執行膨脹儀試驗和標準貫入試驗，建構膨脹儀試驗水平應力指數(K(下標 D))、膨脹模數(E(下標 D))與標準貫入試驗修正打擊數(N(下標 1,60cs))之關係，其次發展土壤抗液化強度的簡易評估模式。建立的評估模式以國內外地震液化歷史案例進行模式準確性評估，結果顯示本研究發展的簡易評估模式，可以準確估計土壤抗液化強度，此模式可結合既有的評估方法以更完整地進行土壤抗液化強度的評估。

This study presents a new flat dilatometer test (DMT)-based model for evaluating the liquefaction resistance of soils. First, the flat dilatometer test and standard penetration test (SPT) were conducted side-by-side at five sites for establishing the correlations between horizontal stress index and dilatometer modulus and blow counts. Subsequently, a simplified model for evaluating liquefaction resistance of soils was developed. Then, a number of worldwide earthquake-induced liquefaction cases are collected and used to validate the accuracy of the developed model. The analysis results show that the capability of the model in estimating the liquefaction resistance of soils is validated. This model can be integrated with the existing models to completely evaluate the liquefaction resistance of soils.

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