지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2014.12
- 수록면
- 473 - 480 (8page)
이용수
초록· 키워드
오류제보하기
Upon setting up a dedicated plastic greenhouse for tomato cultivation developed by the Rural Development Administration on the Gyehwa reclaimed land, this study was aimed at analyzing the problems can be occurred in the installation of plastic greenhouse on reclaimed lands as well as finding out solutions for improvement. A relatively cheaper wooden pile was used in the installation in order to supplement the soft ground conditions. Based on the results of ground investigation of the installation site, both the allowable bearing capacity and pulling resistance of the wooden pile with a diameter of 150 mm and a length of 10 m were computed and came out to be 30.645 kN. It was determined that the values were enough to withstand the maximum compressive force (17.206 kN) and the pullout force (20.435 kN) that are generally applied to the greenhouse footing. There are three problems aroused in the process of greenhouse installation, and the corresponding countermeasures are as follow. First, due to the slightly bent shape of the wooden pile, there were phenomenon such as deviation, torsion, and fracture when driving the pile. This could be prevented by the use of the backhoe (0.2) rotating tongs, which are holding the pile, to drive the pile while pushing to the direction of the driving and fixing it until 5 m below ground and applying a soft vibrating pressure until the first 2 m. Second, there exists a concrete independent footing between the column of the greenhouse and the wooden pile driven to the underground water level. Since it is difficult to accurately drive the pile on this independent footing, the problem of footing baseplate used to fix the column being off the independent footing was occurred. In order to handle with this matter, the diameter of the independent footing was changed from 200 mm to 300 mm. Last, after films were covered in the condition that the reinforcing frame and bracing are not installed, there was a phenomenon of columns being pushed away by the strong wind to the maximum of 11 m?s-1. It is encouraged to avoid constructions in winter, and the film covering jobs always to be done after the frame construction is completely over. The height of the independent footing was measured for 9 months after the completion of the greenhouse installation, and it was found to be within the margin of error meaning that there was no subsidence. The extent to the framework distortion and the value of inclinometers as well showed not much alteration. In other words, the wooden pile was designed to have a sufficient bearing capacity.
목차
Abstract
I. 서론
II. 재료 및 방법
III. 결과 및 고찰
IV. 결론
참고문헌
참고문헌 (8)
참고문헌 신청
Jeong SH / 2012 / Developing growth model of windbreak forest and analyzing effects of windbreaks based on wind tunnel test
Kim CG / 2014 / Agricultural policy for Reclaimed land / J. Society of Agri. Research on Reclaimed Lands 12:1~7
Korean Society for Bio-Env. Con / 2009 / Master plan for developing greenhouse complex in Taean / CTC :380~381
Park CM / 2009 / Construction measures of windbreak forests in Saemanguem Reclaimed Land / Journal of Korea Society Forest Engineering 7(3):217~232
Seo DW / 2012 / Activation method on controlled agriculture for future agriculture -Design guide on construction of infrastructure for controlled agriculture- :66~68
Kim CG / 2014 / Agricultural policy for Reclaimed land / J. Society of Agri. Research on Reclaimed Lands 12:1~7
Korean Society for Bio-Env. Con / 2009 / Master plan for developing greenhouse complex in Taean / CTC :380~381
Park CM / 2009 / Construction measures of windbreak forests in Saemanguem Reclaimed Land / Journal of Korea Society Forest Engineering 7(3):217~232
Seo DW / 2012 / Activation method on controlled agriculture for future agriculture -Design guide on construction of infrastructure for controlled agriculture- :66~68
이 논문의 저자 정보
이 논문과 함께 이용한 논문
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2016-480-000987365