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정진혁(Jin-Hyuck Chung),류혜림(Hye-Rim Ryu),이송(Song Lee),장연수(Yeon-Soo Jang) 한국토목섬유학회 2007 한국지반신소재학회 학술발표회 Vol.2007 No.11
Recently most of the sites where a drain pipe maintenance enterprise is progressing are located in a residential area. There is a limited road used for a parking place and a passage of small cars. So in this site conditions, refilling construction must be carried out in the time limit for minimizing inconvenience of inhabitants and ensuring safety against a night traffic accident . Because of these space and time limits, constructive corporation carrying out refilling pipe should actually excavate underground and compact refilling material with a small construction machinery instead of a large one. But it is difficult to achieve objective degree of compaction demanded by the relative authorities of a drain pipe with the use of a small construction machinery. Accordingly, this study analyzed a internal and external bibliography about excavation and compaction of a drain pipe and reestimated result of in-situ test with standard compaction test. Also numerical analysis was carried through FLAC 2D(finite difference method program) using the trustable parameter obtained from a internal and external bibliography, and the process of refilling work and step of excavation were applied to modeling so influence of ground settlement and pipe deformation were studied. Through reestimated degree of compaction and result of numerical analysis, this study estimates whether internal criterion for degree of compaction is appropriate to a drain pipe refilling or not.
친환경 배수블록 공법을 활용한 보강압성토(Soil Castle) 공법의 적용사례에 관한 연구
정진혁 ( Chung Jin-hyuck ),윤성호 ( Yun Sung-ho ),이송 ( Lee Song ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.1
In this study, the most advanced new technique named Soil Castle can stabilize and afforest cutting slope and embankment slope using the verifiable structure on the existing reinforced earth retaining wall. This is easy to maintain and insure of a site. It is a special feature that the face of a wall is completed a woody and a herbaceous plant for pro-environmental. Thus, in this study, we should study for application of an engineering method to analyze construction example of a pro-environmental drainage block and a reinforced counterweight fill method. They are applied to the cut slope section while extension work of the Seoul-Pusan express between Yongdong and Kimcheon.
연약지반에 피에조콘시험을 이용한 통계학적 콘계수 산정에 관한 연구
이송 ( Lee Song ),박수범 ( Park Soo-beom ),정진혁 ( Chung Jin-hyuck ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.1
Recently, as the importance of investigation on the soft ground is increasing in Korea, various investigation techniques are being introduced and applied. Particularly, various characteristics of the ground can be distinguished precisely by using Piezocone penetration test. Also, the division of stratum and various results can be acquired, which are depth consistent, through the continuous measurement. Therefore, Piezocone penetration test is being widely used both domestically and in the outside of the country. Therefore, comparative studies based on different test objects should be conducted including characteristics of the site in order to estimate reliable Piezocone factor. Also, in order to utilize the results of Piezocone penetration tests properly, Piezocone factors should be estimated by using the results of Piezocone penetration tests conducted in the domestic sites. In this study, laboratory tests and field tests were performed to find the characteristics of soft ground that are widely distributed around Siwha lake. A comparative analysis of these tests with Piezocone penetration test was performed.
연약지반에 피에조콘시험을 이용한 통계학적 콘계수 산정에 관한 연구
이송(Lee Song),박수범(Park Soo-beom),정진혁(Chung Jin-hyuck) 한국구조물진단유지관리학회 2007 한국구조물진단학회 학술발표회논문집 Vol.11 No.1
Recently, as the importance of investigation on the soft ground is increasing in Korea, various investigation techniques are being introduced and applied. Particularly, various characteristics of the ground can be distinguished precisely by using Piezocone penetration test. Also, the division of stratum and various results can be acquired, which are depth consistent, through the continuous measurement. Therefore, Piezocone penetration test is being widely used both domestically and in the outside of the country. Therefore, comparative studies based on different test objects should be conducted including characteristics of the site in order to estimate reliable Piezocone factor. Also, in order to utilize the results of Piezocone penetration tests properly, Piezocone factors should be estimated by using the results of Piezocone penetration tests conducted in the domestic sites. In this study, laboratory tests and field tests were performed to find the characteristics of soft ground that are widely distributed around Siwha lake. A comparative analysis of these tests with Piezocone penetration test was performed.
지중상태를 고려한 배수재별 복합통수능력 비교에 관한 연구
이범준 ( Lee Bum-jun ),정민형 ( Jung Min-hyung ),정진혁 ( Chung Jin-hyuck ),이송 ( Lee Song ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.1
In this study, the complex drainage effect test had been conducted to estimate drainage capacity of each drain board. It is possible to embody the situation that a drain board is pressurized in the ground by conducting the complex drainage effect test. Drain boards that used in this test were normal PBD, X-typed PBD, SDD, PCD and Fiber Drain. Drainage capacities of all drain boards tend to decrease as confining pressure increases.
지중상태를 고려한 배수재별 복합통수능력 비교에 관한 연구
이범준(Lee Bum-Jun),정민형(Jung Min-Hyung),정진혁(Chung Jin-Hyuck),이송(Lee Song) 한국구조물진단유지관리학회 2007 한국구조물진단학회 학술발표회논문집 Vol.11 No.1
In this study, the complex drainage effect test had been conducted to estimate drainage capacity of each drain board. It is possible to embody the situation that a drain board is pressurized in the ground by conducting the complex drainage effect test. Drain boards that used in this test were normal PBD, X-typed PBD, SDD, PCD and Fiber Drain. Drainage capacities of all drain boards tend to decrease as confining pressure increases.