DOI QR코드

DOI QR Code

A Study on the Selection Method of Foundation Type in the Underground Parking Lot of Apartments

공동주택 지하 주차장 기초형식 선정방법에 관한 연구

  • Published : 2004.09.01

Abstract

Normally easy task of plat in urban architecture is that using underground full of activities for increase building site efficiency. Especially for using underground space for the parking lot. Also utilize underground is more increase for fulfill requirement in modern society considered with environmental friendly architecture. The primary objective of this study is to apply analyzed formal foundation type for selecting the optimum type of parking lots considered with structural stability, economical efficiency, construction efficiency, construction duration. This study aim to on criteria decided through the questionaries for the selection considered with in the scale of second stories parking lots underground, parking volume is 80 and reinforced concrete structure. The bearing capacity is 6~8m and downward from surface, healthy ground bearing capacity is 40 t/m2. This study comparative analysis and discuss economical efficiency, construction efficiency, construction duration based constructivist stability which applied Single foundation, Mat foundation, Drop Mat foundation. The result of this study is as follows: First, the result of economical efficiency is that on the basis of single foundation, Drop Mat foundation is 1.88, Mat foundation 2.04 as a comparative analysis on the basis of total construction cost included material cost, labor coast and machinery cost. Second, the result of construction efficiency order is single foundation, Drop Mat foundation, Mat foundation as a comparative analysis on the based connected characteristics. Third, the result of construction duration is that on the basis of Mat Foundation, Drop Mat foundation is 1.33, single foundation is 1.87 as a comparative analysis Critical Path. Forth, Each foundational type characteristics order through the matrix method is that overall each formal type of foundation contraries at economical efficiency and construction efficiency, construction duration. Also expect contradiction between engineers and owners due to engineer pursuit construction duration and ewer to begin with economical efficiency. Fifth, The selection of suitable foundation formal type needs that based consider project characteristic and field condition as according to above result of a comparative analysis. As a result, a comparative analysis economical efficiency, construction efficiency, construction duration of Mat foundation, Drop Mat foundation, single foundation with 3Bay reinforced structure underground parking lots on the healthy ground.

Keywords

References

  1. Braja M. das, Principal of foundation Engineering, third edition, pws publishin company
  2. Joseph E. Bowles, "Mat Design", ACI Journal, Nov-Dec. 1986. P.1010-1016
  3. Joseph E. Bowles "Foundation Analysis and Design: McGraw-Hill, 1997.
  4. Kazuo Murai(1999), A Calculation of settlement for buildings with mat foundation by considering the rebound of the ground, the 11th ARC
  5. Saha D.Milovic(1997), A comparison between observed and calculated large settlements of raft foundation, Canada, Geotech Journal
  6. Shyam N. Shukla, "Simplified Method for Design of Mats on Elastic Foundations", ACI Journal, Sep-Oct. 1984, p.469-475
  7. 토목(지질)학회, 동호회, http://www.ceg4u.com/, Visited. Oct. 16.
  8. 김기아, 지반소성을 고려한 매트기초의 탄소성 유한요소해석, 대한건축학회, 학술발표논문, 제19권 제2호, 1999.10.30.pp.151
  9. 건축시공실무자료집/2.기초공사, 건축학술부, 정학사, 1997.7, P.22를 참고로 함.
  10. 송호산, 지반크기변화에 따른 Flat Slab 구조물의 휨모멘트에 대한 연구
  11. 변동균외 2인 , 철근콘크리트, 동명사, 2001. p.279
  12. 송호산, 지판크기변화에 따른 Flat Slab 구조물의 휨모멘트에 대한 연구, 재인용