지하철 정거장 공사 가설입니다.
현재 바닥슬라브까지 시공완료되어 가설 해체를 준비 중이며,
원 설계시 해체 검토가 되어있지 않았읍니다.
해체시 안정성 검토 중, 계속 수렴오류가 나와서 문의드립니다.

현 기시공 및 설계 내역상 8,7,6,5,4 단 버팀보를 별도 지지공 및
슬라브 없이 해체해야합니다.
이로인한 수렴오차인가 해서 중간에 슬라브시공 단계를
넣어주어도 마찬가지더군요.
다른 이유가 있는것인지 검토부탁드립니다.

또, 마지막 버팀보 해체시 벽체에 큰 모멘트가 걸리는것이 정상적인지요.



-------------------------------------------
project TYPE-7(우측) 가설해체 검토


soil 1 매립층
2.60 1.8 0.9 0.0 25 1500 -1
2 충적층
3.66 1.8 0.9 1.0 20 2000 -1
3 풍화토
7.71 1.9 1.0 1.0 33 3000 -1
4 풍화암
8.57 2.0 1.1 3.0 35 5000 -1
5 연암
10.35 2.1 1.2 5.0 35 6000 -1
6 경암
50.00 2.2 1.3 10.0 40 8000

vwall 1 42.38 0.01348 0.000215 21000000 1.5

strut 1 0.70 0.02355 21.2 2.0 0.0
2 3.11 0.01574 21.2 2.5 5.0
3 5.61 0.01574 21.2 2.5 5.0
4 8.87 0.01574 21.2 2.5 5.0
5 11.67 0.01574 21.2 2.5 5.0
6 14.37 0.01574 21.2 2.5 5.0
7 16.82 0.01574 21.2 2.5 5.0
8 19.42 0.01574 21.2 2.5 5.0

anchor 1 21.22 0.001013 5 0.1 1.5 0
2 22.72 0.001013 5 0.1 1.5 0
3 24.22 0.001013 5 0.1 1.5 0
4 25.72 0.001013 5 0.1 1.5 0
5 27.22 0.001013 5 0.1 1.5 0
6 28.72 0.001013 5 0.1 1.5 0
7 30.22 0.001013 5 0.1 1.5 0
8 31.72 0.001013 5 0.1 1.5 0
9 33.22 0.001013 5 0.1 1.5 0
10 34.72 0.001013 5 0.1 1.5 0
11 36.22 0.001013 5 0.1 1.5 0
12 37.72 0.001013 5 0.1 1.5 0
13 39.22 0.001013 5 0.1 1.5 0

slab 1 38.32 2.57 21.2
2 31.42 0.8 21.2
3 22.36 0.6 21.2
4 6.76 1.2 21.2

wall 1 31.42 38.32 1.8 0
2 22.36 31.42 1.8 0
3 16.36 22.36 1.8 0
4 10.36 16.36 1.8 0
5 6.76 10.36 1.8 0

division 0.1
output 1

step 1 excavation to 1.2
iteration 10 0.5
rankine 1.0 0.0 30
surcharge 1.0
water-pressure 1.0 0.0 1.2 0.2 1.2 0.2
excavation 1.2

step 2 strut 1 and excavation to 3.61
const strut 1
water-pressure 1.0 0.0 3.61 2.61 3.61 2.61
excavation 3.61

step 3 strut 2 and excavation to 6.11
const strut 2
water-pressure 1.0 0.0 6.11 5.11 6.11 5.11
excavation 6.11

step 4 strut 3 and excavation to 9.37
const strut 3
water-pressure 1.0 0.0 7.71 6.71 8.71 0.0
excavation 9.37

step 5 strut 4 and excavation to 12.17
const strut 4
excavation 12.17

step 6 strut 5 and excavation to 14.87
const strut 5
excavation 14.87

step 7 strut 6 and excavation to 17.32
const strut 6
excavation 17.32

step 8 strut 7 and excavation to 19.92
const strut 7
excavation 19.92

step 9 strut 8 and excavation to 21.72
const strut 8
excavation 21.72

step 10 anchor 1 and excavation to 23.22
const anchor 1
excavation 23.22

step 11 anchor 2 and excavation to 24.72
const anchor 2
excavation 24.72

step 12 anchor 3 and excavation to 26.22
const anchor 3
excavation 26.22

step 13 anchor 4 and excavation to 27.72
const anchor 4
excavation 27.72

step 14 anchor 5 and excavation to 29.22
const anchor 5
excavation 29.22

step 15 anchor 6 and excavation to 30.72
const anchor 6
excavation 30.72

step 16 anchor 7 and excavation to 32.22
const anchor 7
excavation 32.22

step 17 anchor 8 and excavation to 33.72
const anchor 8
excavation 33.72

step 18 anchor 9 and excavation to 35.22
const anchor 9
excavation 35.22

step 19 anchor 10 and excavation to 36.72
const anchor 10
excavation 36.72

step 20 anchor 11 and excavation to 38.22
const anchor 11
excavation 38.22

step 21 anchor 12 and excavation to 40.89
const anchor 12
excavation 40.89

step 22 anchor 13
const anchor 13
water-pressure 1.0 0.0 7.71 6.71 8.71 0.0
ground settlement

step 23 const slab 1&2, wall 1
const slab 1
const slab 2
const wall 1

step 24 const slab 3 & wall 2
const slab 3
const wall 2

step 25 const wall 3 & remove strut 8,7
const wall 3
remove strut 8
remove strut 7

step 26 const wall 4 & remove strut 6,5
const wall 4
remove strut 6
remove strut 5

step 27 const slab 4 & wall 5 & remove strut 4
const slab 4
const wall 5
remove strut 4

step 28 remove strut 3,2
remove strut 3
remove strut 2

STEP 29 BACKFILL TO TOPSLAB & REMOVE STRUT 1
FILL 0 0 0.7 1
REMOVE STRUT 1

END