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Estimation of Coefficient of Horizontal Subgrade Reaction by the Inverse Analysis on the Lateral Load Test Results  

Ryu, Soo-Yong ((주)동호 지반공학부)
Kwak, No-Kyung (서울시립대학교 토목공학과)
Park, Min-Chul (서울시립대학교 토목공학과)
Jeong, Sang-Guk (송원대학교 토목공학과)
Lee, Song (서울시립대학교 토목공학과)
Publication Information
Journal of the Korean GEO-environmental Society / v.13, no.8, 2012 , pp. 15-24 More about this Journal
Abstract
Even though decision of coefficient of horizontal subgrade reaction is important in analysis for pile under lateral load, the behavior of pile under lateral loading is estimated differently due to using established suggestion. Therefore this study estimates coefficient of horizontal subgrade reaction by using Chang's method or numerical inverse analysis method with the result of lateral load test. Then this study investigates the adequacy and reliability for coefficient of horizontal subgrade reaction. The analytical results of coefficient of horizontal subgrade reaction with lateral load test showed that coefficient of horizontal subgrade reaction with Chang's method was underestimated as compared with inverse analysis. Deformation modulus of foundation by Standard Specifications for Highway Bridges and Eo${\fallingdotseq}$1,400~1,600N showed similar range like range of coefficient of horizontal subgrade reaction with lateral load test.
Keywords
Subgrade Reaction Analysis; Coefficient of Horizontal Subgrade Reaction; Lateral Load Test; Chang's Method;
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