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토목기유(土木機維)로 보강(補?)된 연약지반(軟弱地盤)의 압밀(壓密) 및 Creep 거동(擧動)에 관한 연구(?究)
정형식,안상로,Chung, Hyung Sik,Ahn, Sang Ro 대한토목학회 1991 대한토목학회논문집 Vol.11 No.3
방조제(防潮堤)와 같은 토공구조물(土工構造物)을 연약 지반위에 건설(建設)할 때에 두꺼운 퇴적층(堆積層)의 해성(海成) 실트질 점토(粘土)로 이루어진 기초지반(基礎地盤)은 압밀(壓密)과 Creep으로 변형(變形)이 발생한다. 연약지반(軟弱地盤) 위에 축조(築造)된 토공구조물(土工構造物)의 안정화(安定化)를 위하여 보통 매트리스를 사용하게 되며 이는 제체(堤體)의 하중(荷重)을 분산(分散)시킴으로 인하여 극한지지력(極限地支力)을 증가(增加)시키는 중요한 역할(役割)을 하게 된다. 본 연구(硏究)에서는 토공구조물(土工構造物)의 장기적인 변형(變形)을 합리적(合理的)으로 예측(豫測)하여 방조제(防潮堤) 설계(設計) 및 사후관리(事後管理)에 기여(寄與)하고자 한다. 따라서 실험(實驗)에 의하여 해성점토(海成粘土)의 유변학적(流變學的) 모델을 결정(決定)하고 선정(選定)된 모델에 맞는 기존 프로그램인 압밀과 Creep이 각각 해석 가능한 S/W를 두 가지가 동시에 해석가능한 S/W로 수정하여 장기(長期) 응력(應力)-변형거동(變形擧動)을 구명(究明)하였다. 연구결과(硏究結果) 내용(內容)을 요약(要約)하면 다음과 같다. 1. 개발(開發)한 프로그램은 압밀(壓密)과 Creep을 동시에 해석(解析)할 수 있다. 2. Creep 시험 결과(結果), Rheology 모델은 Vyalov 모델로 나타났다. 3. 연약지반(軟弱地盤)이 보강(補?)된 경우는 비보강(非補?) 경우 보다 압밀(壓密) 및 Creep 변위(變位)가 작게 나타나 토목 섬유의 효과(效果)가 어느 정도 있음을 알 수 있었다. When we construct the earth structures such as embankments, on soft ground which are consisted of thick marine silty clay, the foundations deform due to consolidation and creep. For the stabilization of the earth structures constructed on soft foundations, we usually uses the mattress and they play an important role in increasing an ultimate bearing capacity by the dispersion of load of embankment. The purpose of this paper was to predict rationally a long term deformation of earth structures and to contribute to embankment design and maintenance. We determined a rheological model of marine clay from experimental data, and developed a computer program using the chosen model and found out the long term behavior of embankment. The results of this paper are as follows: 1. The developed program can analyze simultaneously consolidation and creep. 2. From the results of creep test, the rheological model of marine silty clay can be represented by the Vyalov model. 3. The displacement of embankment on reinforced foundation were smaller than those of the unreinforced foundation in showing the effects of geotextiles on foundation deformations.
양동석 ( Yang Dong-suk ),김용수 ( Kim Young-soo ),정규정 ( Chung Kyu-jung ),김훈 ( Kim Hoon ),안상로 ( Ahn Sang-ro ) 한국구조물진단유지관리공학회 2009 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.13 No.1
Structural health monitoring(SHM) and damage identification are assuming larger and larger importance in civil engineering, SHM is defined as the use of in-situ, non-destructive sensing and analysis of structural characteristics in order to identify if a damage has occurred, define its location and estimate its severity, evaluate its consequences on the residual life of the structure. This paper studied the safety management network system of infrastructure which constructed smart sensors, closed- circuit television(CCTV) and monitoring system. This safety management of infrastructure applied to bridge, cut slop and tunnel, embankment and playground etc. It was constructed safety management system of various infrastructure to improve efficient management and operation for many infrastructure.
양동석(Yang, Dong-Suk),김용수(Kim, Young-Soo),정규정(Chung, Kyu-Jung),김훈(Kim, Hoon),안상로(Ahn, Sang-Ro) 한국구조물진단유지관리학회 2009 한국구조물진단학회 학술발표회논문집 Vol.2009 No.1
Structural health monitoring(SHM) and damage identification are assuming larger and larger importance in civil engineering, SHM is defined as the use of in-situ, non-destructive sensing and analysis of structural characteristics in order to identify if a damage has occurred, define its location and estimate its severity, evaluate its consequences on the residual life of the structure. This paper studied the safety management network system of infrastructure which constructed smart sensors, closed- circuit television(CCTV) and monitoring system. This safety management of infrastructure applied to bridge, cut slop and tunnel, embankment and playground etc. It was constructed safety management system of various infrastructure to improve efficient management and operation for many infrastructure.