Characteristics of Soil Parameter for Lade's Single Work-Hardening Constitutive Model with Relative Density of Bottom ash

Autor: Chan-Kee Kim, Jong-Cheon Lee
Rok vydání: 2013
Předmět:
Zdroj: Journal of the Korean Geosynthetic Society. 12:87-98
ISSN: 1975-2423
DOI: 10.12814/jkgss.2013.12.4.087
Popis: This study was performed a series of the isotropic compression-expansion tests and the drained triaxial tests with various the relative densities 40%, 60%, 80% and 95% for bottom ash. Using the tests results the characteristic of the parameters of Lade's single hardening constitutive model were investigated. The soil parameters Kur and n representing elastic behavior are not much affected by the change of the relative density. The other parameters such as failure criterion(   ), hardening function(   ) and plastic potential(     ) are in a positive linear relationship with the relative density. Since the soil parameters h and  representing yield function do not change much to the change of relative density and also closely related to failure criterion, they can be replaced by failure criterion   . We also observed that predicted values from the Lade’s single hardening constitutive model were well consistent with the observed data. 요 지 본 연구는 석탄회의 상대밀도를 40%, 60%, 80%, 95%로 각각 변화시켜 등방압축팽창시험과 구속압력을 달리한 배수삼축시험을 하였다. 그리고 이 시험자료를 이용하여 Lade의 단일항복면 구성모델의 토질매개변수의 변화 특성을 알아보았다 . 그 결과 탄성성분을 나타내는 토질매개변수 Kur과 n은 상대밀도의 변화에 따른 영향이 미소하고 파괴규준, 경화함수, 소성포텐셜에 관련된 토질매개변수는 상대밀도의 증가에 따라 선형적인 증 ·감현상을 보이고 있다. 그리고 항복함수에 관련된 토질매개변수 h와
Databáze: OpenAIRE