신의손) 부산대학교 기초공학 리포트II

목차

1. Summary of bearing capacity equations
2. Example on bearing capacity: world trade center
3. Example on settlement: Houston high-rise
4. A (10x10 m) square foundation with a uniformly distributed load 1 ton/m2 will be constructed on the surface of a site with the following soil profile. 1) Calculate the factor of safely of the foundation. 2) Calculate the immediate and total (immediate+consolidation) settlements.

본문내용

1. Summary of bearing capacity equations
① Terzaghi and Peck
- B2~4ft
q=BN+DN
B:기초폭 :흙의 단위중량 D:근입깊이
N:기초폭과 관련된 계수, 2(N+1)tan
N:상재하중과 관련된 계수, tan(45+)e
- B4ft
q=0.11N (tsf)
N:SPT의 N치
- B4ft
q=0.08N (tsf)
- mat 기초
q=0.22N
② Meyerhof(1965)
- q=Sa For B4ft
- q=Sa For B>4ft
- q=Sa For 줄기초
q -> tsf B in feet Sa=허용침하(in)
③ Bowles(1988)
- q=0.2Nk For B1.2
- q=0.12Nk For B1.2
B in meters Sa=허용침하(mm) k=1+0.331.33

2. Example on bearing capacity: world trade center
D=20m, B=61m(square), W=12000MN, Q=49MN, e=203m, =35°, c=0, =20kN/m
P==3224.9kN/m
M=Qe=(P-P)
P=P+=3224.9+=3489.84kN/m

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