본 연구에서는 ${\bigcirc}{\bigcirc}$ 도시철도 ${\bigcirc}$ 호선 ${\bigcirc}$ 공구의 지중 전력구관로 매설공사 후 발생한 합성수지 직관의 파손에 대한 원인을 고찰하기 위하여 문헌연구를 통하여 설계 및 구조해석에 사용된 매개변수를 분석하였다. 그리고 현장조건을 면밀히 분석하고 현장 관로를 모사한 관로의 시험시공 및 물다짐 시험을 수행하였다. 또한, 송전관로의 구조적 안정성과 수치해석을 통한 송전관로 기초지반 침하영향 검토를 수행하였다. 수행결과 물다짐에 의하여 얻을 수 있는 상대밀도는 보통 이상이었으며 시방기준에 의거한 상대다짐도는 양호한 물다짐을 수행할 경우 90%정도의 결과를 얻을 수 있었다.
본 연구에서는 ${\bigcirc}{\bigcirc}$ 도시철도 ${\bigcirc}$ 호선 ${\bigcirc}$ 공구의 지중 전력구관로 매설공사 후 발생한 합성수지 직관의 파손에 대한 원인을 고찰하기 위하여 문헌연구를 통하여 설계 및 구조해석에 사용된 매개변수를 분석하였다. 그리고 현장조건을 면밀히 분석하고 현장 관로를 모사한 관로의 시험시공 및 물다짐 시험을 수행하였다. 또한, 송전관로의 구조적 안정성과 수치해석을 통한 송전관로 기초지반 침하영향 검토를 수행하였다. 수행결과 물다짐에 의하여 얻을 수 있는 상대밀도는 보통 이상이었으며 시방기준에 의거한 상대다짐도는 양호한 물다짐을 수행할 경우 90%정도의 결과를 얻을 수 있었다.
This study examines a cause for damage of synthetic resins straight pipe occurred after pipe construction of underground electric power duct pipelines of ${\bigcirc}$ section work, ${\bigcirc}$ line, ${\bigcirc}{\bigcirc}$ city railroad. For this, we analyzed a param...
This study examines a cause for damage of synthetic resins straight pipe occurred after pipe construction of underground electric power duct pipelines of ${\bigcirc}$ section work, ${\bigcirc}$ line, ${\bigcirc}{\bigcirc}$ city railroad. For this, we analyzed a parameter used for plan and structural analysis through a literature review. And the site condition was analyzed in detail, and test construction of the pipe line that simulated the site pipe line and test on compaction by watering were performed. In addition, an examination on subsurface settlement influence of foundation ground through a structural safety and a numerical analysis of power transmission pipe line was performed. As a result of the performance, relative density gained by compaction by watering was more than average and relative degree of compaction according to technical specification standard showed the result of about 90% in the case of good compaction by watering.
This study examines a cause for damage of synthetic resins straight pipe occurred after pipe construction of underground electric power duct pipelines of ${\bigcirc}$ section work, ${\bigcirc}$ line, ${\bigcirc}{\bigcirc}$ city railroad. For this, we analyzed a parameter used for plan and structural analysis through a literature review. And the site condition was analyzed in detail, and test construction of the pipe line that simulated the site pipe line and test on compaction by watering were performed. In addition, an examination on subsurface settlement influence of foundation ground through a structural safety and a numerical analysis of power transmission pipe line was performed. As a result of the performance, relative density gained by compaction by watering was more than average and relative degree of compaction according to technical specification standard showed the result of about 90% in the case of good compaction by watering.
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문제 정의
The purpose of this test is to estimate a relative density of the field layer where the watering was performed by simulating the same condition.
제안 방법
(2) To find out a clear cause of cable demage, in the same condition as the field, by simulating damaged field at Pungdeokcheon-dong, Yongin, Gyounggi-do, after performing compaction by watering about refilling material in a condition suitable for a specification, relative density of filling material was tested. As the result, relative density of sand layer of compaction using water showed 90.
Compaction by watering of layer for research was revived itself and examination on effectiveness in compaction of watering of the field was performed through field density test using water and sand. And for sample gathered from the field, sieve analysis tests, compaction tests, and unit weight tests were performed.
In this study, to examine causes for damage of electric power pipe lines made of synthetic resins, test pilot pipe lines to simulate the field conditions were constructed and the compaction by watering were performed. In situ soil density tests using sand cone and water were performed at the site and soil samples were taken to conduct sieve analysis, laboratory compaction test, and specific gravity test and so on.
The section for research performed in this study is a construction section of 1,103 m in length and to estimate ground ratings that is needed for a structural analysis. The ground investigation was performed in ranged through the total 10 places (BX: 8 places, NX: 2 places) and Table 1 shows the result of drilling survey.
To examine a cause for damages of synthetic resins straight pipe occurred after a burring construction of designated pipe line that was performed in parallel with section work, ○ ○ ○○ line, subway, parameter used from plan and structure analysis through a literature review analysis of field condition in field construction, pipe line test construction to simulate field pipelines, and compaction by watering tests were performed and analyzed. From the analysis following conclusions can be drawn.
To measure natural water content of a sample soil gathered from the field, water content test was performed, and to measure specific gravity value of the sample that was a data needed for calculating emax and emin, specific gravity test was performed. The result showed that average water content was 12.
대상 데이터
The section for research performed in this study is a construction section of 1,103 m in length and to estimate ground ratings that is needed for a structural analysis. The ground investigation was performed in ranged through the total 10 places (BX: 8 places, NX: 2 places) and Table 1 shows the result of drilling survey.
성능/효과
(3) As the result of settlement analysis, in the case of refilling lower straight pipe by using sand, according compaction condition, amount of settlement showed a little difference, but it was analyzed that it had margin more than about 30% until a basis amount of settlement to occur damage to straight pipe. From geotechnical engineering characteristics of refilling material.
As the result of settlement analysis, in the case of refilling lower straight pipe by using sand, according compaction condition, amount of settlement showed a little difference, but it was analyzed that it had margin more than about 30% until a basis amount of settlement to occur damage to straight pipe. From geotechnical engineering characteristics of refilling material, we can guess that it is because sand has small compressibility.
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