한국지반공학회지:지반 (Geotechnical Engineering)

한국지반공학회 (Korean Geotechnical Society)
권호 표지

Disturbed State Modeling for Fully Saturated Sand under Dynamic Load

  • Park, Inn-Joon (Member, Post-Doctor, Dept. of Civil Bngrg., Yonsei Univ.) ;
  • Kim, Soo-Il (Member, Professor, Dept. of Civil Bngrg., Yonsei Univ.)
  • 발행 : 1998.06.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 연구에서 제안한 교란상태 개념 (disturbed state concept, DSC)은 변형중인 재료는 상대적으로 손상되지 않은 상태(relative intact state: Rl)와 완전히 파괴된 상태(fully adjusted state. FA)가 혼합되어 있다는 기본가정에 기초를 두고 있다. 여기에서 사용된 두 가지 상태, 즉 Rl상태와 FA상태는 재료의 파괴정도를 정의하는 기준이 된다. 이와 같은 개념을 바탕으로 DSC는 반복 하중하에 있는 포화사질토의 거동특성에 대한'통합된 구성방정식을 제공한다. 포화사질토에 대한 본 모델의 계수들은 실삼축시첩(truly triaxial test)의 결과를 통해 산정된다. 또한 실내실험을 통하여 얻은 결과를 이용하여 본 모델에 대한 검증을 수행하였다. DSC모델을 이용한 역해석 해석대상 시험결과는 전반적으로 일치되는 경향을 보이고있다. 본 연구의 결과를 토대로, DSC 모델은 동하중하의 구화 사질토의 거동특성을 규명할 수 있다고 사료된다.

The disturbed state concept (DSC) proposed here is based on the idea that a deforming material element can be treated as a mixture of two constituent parts in the relative intact (Rl) and fully adjusted (FA) states, referred to as reference states. Based on this idea, DSC provides a unified constitutive model for the characteristics of saturated sands under cyclic loading. The model parameters for saturated sands are evaluated by using data from truly triaxial test device, The laboratory test results are also used for the verification of D SC model. In general, the model predictions are found to provide satisfactory correlation with the test results. From the results of this research, it can be stated that the DSC model is capable of characterizing the cyclic behavior of saturated sands under dynamic loading.

키워드

참고문헌

  1. Ph. D. Dissertation, Dept. of Civil Engrg. And Engrg. Mech. Testing and Modeling of Sand-Steel Interfaces Under Static and Cyclic Loading Alanazy,A.S.
  2. Report to the NSF, Dept. of Civil Engrg. and Engrg. Mech. Modeling Include Testing of Cohesionless Soils Under Disturbed State Concept Armalech,S.H.;Desai,C.S.
  3. Proc. Int. Conference on Computational Methods in Nonlinear Mechanics A Consistent Finite Element Technique for Work-Sofening Behavior Desai,C.S.
  4. Int. J. Num. Analyt. Meth. In Gemech. v.4 A General Basis for Yield, Failure, and Potential Functions in Plasticity Desai,C.S.
  5. Int. J. Num. Analyt. Meth. In Geomech. v.16 no.9 Modeling of Joints and Interfaces Using the Disturbed State Concept Desai,C.S.;Ma,Y.
  6. Int. J. Num. Analyt. Meth. In Geomech Fundamental Yet Simplified Model for Liquefaction Instability Desai,C.S.;Park,I.J.
  7. Int. J. Num. Analyt. Meth. In Geomech. v.10 no.3 A Hierarchical Approach for Constitutive Modeling of Geologic Materials Desai,C.S.;Somasundaram,S.;Frantziskonis,G.
  8. Proc. 9th IACMAG Conference Disturbed State Modeling of Cyclic Behavior of Soils and Interfaces in Dynamic Soil-structure Interaction Desai,C.S.;Shao,C.;Park,I.J.
  9. Short Coures Notes, Workshop on Implementation of Constitutive Laws of Engineering Materials, Dept. of Civil Engrg. Ang Engrg. Mech. Univ. of Arizona Hierarchical and Unified Models for Solids and Discontinuities (Joints/Interfaces) Desai,C.S.;Wathugala,G.W.
  10. Repprt, Dept. of Civil Engrg. And Engrg. Mech. User Manual of the Servo-Controlled Cubical Device with Automatic Data Acquisition System Gyi,M.M.;Desai,C.S.
  11. Ph.D. Dissertation. Dept. of Civil Engrg. and Engrg. Mech. Disturbed State Modeling for Dynamic and Liquefaction Analysis Park,I.J.
  12. Repprt to the NSF, Dept. of Civil Engrg. And Engrg. Mech. Testing, Modeling, and Applicatin of Saturated Interfaces in Dynamic Soil-Structure Interaction Rigby,D.B.;Desai,C.S.
  13. Geotechnique v.8 On the Yielding of Soils Roscoe,K.H.;Schofield,A.;Wroth,C.P.