UDC

Technical code for groung treatment of buildings JGJ 79-2002 J 220-2002

Technical code for groung treatment of buildings JGJ 79-2002 2 0 0 3 1 1

64 JGJ79 2002 2003 1 1 3.0.5 3.0.6 4.4.2 5.4.2 6.1.2 6.3.5 6.4.3 7.4.4 8.4.4 9.4.2 10.4.2 11.1.2 11.3.15 11.4.3 12.4.5 13.3.9 13.4.3 14.4.3 15.4.3 16.4.2 JGJ79 91

[1997] 71 JGJ 79 91 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 1. 2. 3. 17 30 100013

...4 1...9 2...9 2.1... 9 2.2... 11 3...12 4...14 4.1... 14 4.2... 14 4.3... 17 4.4... 18 5...19 5.1... 19 5.2... 19 5.3... 24 5.4... 25 6...26 6.1... 26 6.2... 26 6.3... 28 6.4... 30 7...31 7.1... 31

7.2... 31 7.3... 33 7.4... 34 8...35 8.1... 35 8.2... 35 8.3... 37 8.4... 38 9...38 9.1... 38 9.2... 39 9.3... 41 9.4... 42 10...42 10.1... 42 10.2... 42 10.3... 43 10.4... 44 11...44 11.1... 44 11.2... 45 11.3... 47 11.4... 49 12...50 12.1... 50 12.2... 50 12.3... 51 12.4... 52

13...53 13.1... 53 13.2... 53 13.3... 54 13.4... 55 14...55 14.1... 55 14.2... 56 14.3... 57 14.4... 59 15...59 15.1... 59 15.2... 59 15.3... 60 15.4... 61 16...61 16.1... 61 16.2... 62 16.3... 64 16.4... 66 17... 67 A...67...69

1 1.0.1 1.0.2 1.0.3 1.0.4 GB 50007 2.1.1 ground treatment 2 2.1 2.1.2 composite subgrade composite foundation 2.1.3 characteristic value of slubgrdde bearing capacity 2.1.4 cushion 2.1.5 prelloading 2.1.6 vacuum preloading 2.1.7 dynanlic compaction dynamic consolidation

2.1.8 dynamic replacenlent 2.1.9 vibroflotation vibro-replacenentt 2.1.10 sand-gravle pile 2.1.11 cement-flyash-gravle pile 2.1.12 ranned soil-cemeetn pile 2.1.13 cement deep mixing 2.1.14 deep mixing 2.1.15 dry jet mixing 2.1.16 jet grouting 2.1.17 lime pile

2.1.18 lime soil plle 2.1.19 earth plle 2.1.20 piles thrusted-expangeded in column-hammer 2.1.21 silicification grouting 2.1.22 soda solution grouting A 2.2 Ae Ap b DR d d e e f ak

f pk f sk f spk I p l m PK pc q p q s RK S U ω op z θ λc ρ d 3 3.0.1 1 2 3

4 5 3.0.2 3.0.3 l 2 3 3.0.4 1 2 1.0 3.0.5 3.0.6 3.0.7

3.0.8 A 3.0.9 GB 50007 4 4.1 4.1.1 4.1.2 4.2 4.2.1 p z + p f 4.2.1-1 cz az p z kpa pcz kpa f az kpa 4.2.1-2 4.2.1-3 p z b( pk pc ) = 4.2.1-2 b + 2ztgθ p z bl( pk pc ) = 4.2.1-3 ( b + 2ztgθ )( l + 2ztgθ ) b m l m pk kpa

p c p kpa z m θ 4.2.1 4.2.1 θ z / b 0.25 20 6 0.50 30 23 28 l z / b 0.25 28 θ θ 0 2 0.25 z / b 0.5 O 0.5m 3m 4.2.2 b b + 2ztgθ 4.2.2 b m θ 4.2.1 z / b 0.25 z / b 0.25 300mm 4.2.3 4.2.4 4.2.1 4.2.2 4.2.6 GB 50007

4.2.5 1 2mm 45% 0.075mm 9% 30% 50mm 2 5% 50mm 3 2 8 3 7 15mm 5mm 4 0.3 0.5m 5 11kN m 3 5% 6 7 GB 50290 4% 5%

4.2.6 4.2.6 4.2.6 0.94 0.97 30% 50% 30% 50% 0.94 0.97 0.95 0.90 0.95 l λ ρ c d ρ d max 2.0 2.2t/m 3 2 λ c λ c 3 2mm 4.2.7 4.3 4.3.1 4.3.2 200 300mm

4.3.3 2O% 4O% ω op 4.3.4 4.3.5 200mm 150 300mm 4.3.6 4.3.7 500mm 3d 4.3.8 4.4 4.4.1 4.4.2 ω op

4.4.3 2/3 50 100m 2 1 10 20m 1 1 4m 4.4.4 3 5 5.1 5.1.1 5.1.2 5.1.3 5.1.4 5.1.5 5.2 5.2.1

5.2.2 1 2 3 5.2.3 300 500mm 70 l20mm 2 ( b + δ ) d p = 5.2.3 π d mm p b mm δ mm 5.2.4 d e l d e 1.05l d e 1.13l 5.2.5 n n = d / d, d d = n 15 22 w d p n 6 8 5.2.6 2.0m 5.2.7 t e w w U t q& n i βt βti βti 1 = ( Ti Ti 1 ) e ( e e ) i= 1 Σ p β α 5.2.7

U t t q& i i kpa/d Σ p kpa Ti 1 T i d i i t Ti t α β 5.2.7 β 5.2.7 α β U z 30% α 8 2 π 8 1 2 π F n = 2 2 n 3n 1 1n ( n ) 2 2 n 1 4 n β π 2 c v 2 4H 8c F h 2 nd e 8c F h 2 nd e π c + 4H 2 v 2 c cm 2 /s h c cm 2 /s v H cm U z 5.2.8 U r 8c Fd h 2 e t = 1 e 5.2.8-1 F = F + F + F 5.2.8-2 F n n s r 3 = 1n( n) n 15 5.2.8-3 4

k h Fs = 1 1ns 5.2.8-4 ks F r k q 2 2 π L h = 5.2.8-5 4 w U r kh cm/s k k = 1/5 1/3 k cm/s s s h s d d s 2.0 3.0 s w L cm qw cm 3 /s 2 8 5.2.7 α = 2 π 8ch π cv β = + 2 Fd 4H 2 5.2.9 5.2.10 5.2.11 e

τ ft τ f 0 + σ z U t tanϕ cu = 5.2.11 τ t kpa ft τ f 0 kpa σ z kpa U t ϕcu 5.2.12 sf e e = ξ h 5.2.12 n 0i 1i i 1 1 + e0i i sf m e 0 i i e p e 1 i i e p hi i m ξ ξ =1.1 1.4 0.1 5.2.13 500mm 3% 50mm 1.5g/cm 3 1 10-2 cm/s 5.2.14 3% 5.2.15

5.2.16 5.2.5 1 10-2 cm/s 5.2.17 3.0m 5.2.18 650mmHg 90% 5.2.19-5.2.20 5.2.21 5.2.12 0.8 0.9 - ξ 0.9 5.2.22 1000 1500m 2 5.3 5.3.1 5.3.2 95% 5.3.3 5.3.4 200mm

1.5% 500mm 5.3.5 15mm 10mm 5mm 5.3.6 95kPa 5.3.7 100 200mm 5.3.8 15mm 5.3.9-5.4 5.4.1 1 2 3 4 5

5.4.2 1 2 3 6 6.1 6.1.1 6.1.2 6.1.3 6.2 6.2.1 6.2.1 6.2.1 m Kn m 1000 5.0 6.0 4.0 5.0 2000 3000 4000 5000 6000 8000 6.0 7.0 7.0 8.0 8.0 9.0 9.0 9.5 9.5 10.0 10.0 10.5 5.0 6.0 6.0 7.0 7.0 8.0 8.0 8.5 8.5 9.0 9.0 9.5

6.2.2 l 400kN m 50mm 4000 6000kN m l00mm 6000kN m 200mm 2 3 6.2.3 2 3 2 6.2.4 3 4 6.2.5 2.5 3.5 6.2.6 1/2 2/3 3m 6.2.7 6.2.8 GB 50007 6.2.9 GB 50007

6.2.10 7m 6.2.11 6.2.12 300mm 30% 6.2.13 1 2 1.5 2.0 3 6.2.2 6.2.14 6.2.15 2 3 1.5 2.0 1.1 1.2 6.2.16 6.2.17 6.2.6 6.2.18 500mm 100mm 6.2.19 6.2.20 6.2.7 6.2.21 6.2.22 7.2.9 6.3 6.3.1 10 40t 25 40kPa

250 300mm 100 200kPa 6.3.2 6.3.3 2m 6.3.4 6.3.5 6.3.6 1 2 3 4 5 6 5 7 3 6 8 9 6.3.7 1 1.0 2.0m 2 3 4

5 6 7 8 6.3.8 l 2 3 6.3.9 6.4 6.4.1 6.4.2 7 14d 14 28d 6.4.3 6.4.4 3 l% 3

7 7.1 7.1.1 20kPa 10% 7.1.2 7.2 7.2.1 1 2 1/2 7.2.2 7.2.3 30kW 1.3 2.0m 55kW 1.4 2.5m 75kW 1.5 3.0m 7.2.4 4m 7.2.5 300 500mm 7.2.6 5% 30kW 20 80mm 55kW 30 100mm 75kw 40 150mm 7.2.7 7.2.8

f = mf + ( 1 m) f 7.2.8-1 spk pk sk m = d d 7.2.8-2 2 2 / e f spk kpa f pk kpa f sk kpa m d m d e d e =1. 5s d e =1. 13s d e = 1.13 s1s2 s s s1 2 spk [ 1 + m( n 1 f sk f = )] 7.2.8-3 n 2 4 7.2.9 GB 50007 sp [ 1 + m( n 1 ] E s E = ) 7.2.9 E sp MPa E s MPa 7.2.9 2 4

1.5 3 7.2.10 30kw 7m 75kw 15m 7.2.11 2 3m 7.2.12 GB 50007 7.2.13 GB 50007 7.3 7.3.1 7.3.2 7.3.3 1 2 3 200 600KPa 200 400L/min 0.5 2.0m/min 4 5 50cm 30 50cm 6

7 7.3.4 7.3.5 7.3.6 8 10m/min 0.5m 1 7.3.7 7.4 7.4.1 7.4.2 21 28d 14 21d 7.4.3 0.5% 3 7.4.4 7.4.5 0.5% 3 7.4.6 1% 5

8 8.1 8.1.1 8.1.2 8.1.3 14 8.2 8.2.1 300 800mm 8.2.2 4.5 3 1 e 1 s s 1 + e 0 = 0.95ξ d 8.2.2-1 0.89 d e 0 0 e 1 + e 1 0 = ξ 8.2.2-1 e e 1 e = e Drl e ) 8.2.2-3 1 max ( max emin s m d m ξ 1.1 1.2

1.0 e0 e1 e max e min GB/T 50123 D r1 0.70 0.85 2 s = 1. 08 8.2.2-4 A e s = A e 8.2.2-5 1 m 2 A e A A = p e m 8.2.2-6 m 2 A p m 7.2.8-2 8.2.3 1 2 2m 3 GB 50011 4 4m 8.2.4 1 3 1/2

5m 8.2.5 β β 1.2 1.4 8.2.6 5% 50mm 8.2.7 300 500mm 8.2.8 1 7.2.8-1 7.2.8-3 2 GB 50007 8.2.9 7.2.9 GB 50007 8.2.10 GB 50007 8.3 8.3.1 8.3.2 8.3.3 8.3.4 8.3.5

8.3.6 1% 8.3.7 0.3 8.3.8 8.4 8.4.1 8.4.2 28d 7d 8.4.3 2% 8.4.4 8.4.5 0.5% 3 9 9.1 9.1.1 CFG 9.1.2 9.1.3

9.2 9.2.1 350 600mm 9.2.2 3 5 9.2.3 150 300mm 9.2.4 30mm 9.2.5 R = + β ( f 9.2.5 a f spk m 1 m) Ap sk f spk kpa m Ra kn Ap m 2 β 0.75 f sk 0.95 kpa 9.2.6 l 2 2 R a = u n p i= 1 q si l i + q p A p 9.2.6 u p m n q q i KPa si p

i GB 50007 l i m 9.2.7 f cu Ra 3 9.2.7 A p 150mm 28d f cu kpa 9.2.8 GB 50007 ξ ξ f spk ξ = 9.2.8-1 f ak f ak kpa ψ s 9.2.8 9.2.8 ES MPa 2.5 4.0 7.0 15.0 20.0 ψ s 1.1 1.0 0.7 0.4 0.2 E S E S A i = 9.2.8-2 Ai E si A i i Esi i MPa 9.2.9

GB 50007 9.3 9.3.1 1 2 3 9.3.2 l 160 200mm 30 50mm 200mm 2 1.2 1.5m/min 3 0.5m 4 3 150mm 9.3.3 5 9.3.4 9.3.5 0.9 9.3.6 1% 0.4 0.25

60mm 9.4 9.4.1 9.4.2 9.4.3 28d 0.5% 1% 3 9 4.4 10% 10 10.1 10.1.1 10m 10.1.2 10.1.3 28d 10.2 10.2.1 6m 10.2.2 300 600mm 2 4 10.2.3 10.2.4 100 3mm 20mm

10.2.5 9.2.5 kn 9.2.6 β 0.9 1.0 kpa f sk 10.2.6 9.2.7 10.2.7 GB 50007 9.2.8 10.3 10.3.1 10.3.2 0.93 λ c 10.3.3 5% 10 20mm 2% 0.9 10.3.4 1 1/4 1 ω op 2 1.5% 3 4 10.3.5 200 300mm 10.3.6 R a

10.3.7 10.4 10.4.1 2% 24h N 10 10.4.2 10.4.3 0.5% l% 3 11 11.1 11.1.1 3% 25% 70% ph 4 11.1.2 I 25 11.1.3 11.1.4 ph p

11.1.5 90d 28d 11.2 11.2.1 32.5 7% 12% 12% 20% 0.45 0.55 11.2.2 2m 20m 15m 500mm 11.2.3 9.2.5 kpa β 0.1 0.4 0.5 0.9 11.2.4 11.2.4-1 11.2.4-2 f sk R a = u n p i= 1 q si l i + αq p A p 11.2.4-1

R = ηf a cu A p 11.2.4-2 70.7mm f cu 50mm 90d kpa η 0.20 0.30 0.25 0.33 u p m n qsi 4 7kPa i 6 12kPa 10 15kPa 12 18kPa l i m q kpa p GB 50007 α 0.4 0.6 11.2.5 200 300mm 20mm 11.2.6 10m 11.2.7 3 11.2.8 GB 50007 11.2.9

s 1 s 2 1 s 1 s ( p + p ) l z zl 1= 11.2.9-1 2Esp E = me + ( 1 m) E 11.2.9-2 sp p s p z kpa p zl kpa Esp kpa E 100 120 kpa p Es kpa 2 GB 50007 s 2 f cu 11.3 11.3.1 11.3.2 2 11.3.3 20 11.3.4 300 500mm 11.3.5 1% 50mm

11.3.6 l 2 3 4 5 6 11.3.7 11.3.8 11.3.9 11.3.10 30s 11.3.11 11.3.12 0.5m 11.3.13 24h 11.3.14 6m 11.3.15

11.3.16 16mm 11.3.17 10mm 11.3.18 1.5m 500mm 11.3.19 1m 11.3.20 30% 11.4 11.4.1 11.4.2 1 7d 0.5m 5% 2 3d 1% 3 N 10 11.4.3 11.4.4 28d 0.5% l% 3 28d 0.5% 3 11.4.5 15d 11.4.6

12 12.1 12.1.1 12.1.2 12.1.3 12.1.4 12.1.5 12.2 12.2.1 12.2.2 9.2.5 β 0 0.5 12.2.3 12.2.3-1 12.2.3-2 R = ηf A 12.2.3-1 a cu p R a = u n p i= 1 q si l i + q p A p 12.2.3-2 70.7mm f cu

28d kpa η 0.33 n li i m q i kpa si p GB 50007 q kpa GB 50007 12.2.4 GB 50007 12.2.5 200 300mm 30mm 12.2.6 4 12.2.7 GB 50007 12.2.8 300mm 12.3 12.3.1 12.3.2 20MPa 12.3.3 32.5

12.3.4 0.8 1.5 1.0 12.3.5 12.3.6 50m. 50mm 12.3.7 100mm 12.3.8 12.3.9 12.3.10 12.3.11 12.3.12 12.3.13 12.4 12.4.1 12.4.2 1 2 3 12.4.3 1% 3

12.4.4 28d 12.4.5 12.4.6 28d 0.5% 1% 3 13 13.1 13.1.1 13.1.2 13.2 13.2.1 1 1 1 2 3% 10% 13.2.2 200 300mm 13.2.3 500mm 100mm 13.2.4 300 400mm 2 3 70kPa 1 2 13.2.5 6mm 8mm 13.2.6

13.2.7 GB 50007 13.2.8 160kpa 13.2.9 7.2.8-1 350 500kPa kpa 1.05 1.20 f sk kpa m 1.1 1.2 13.2.10 GB 50007 ψ s f sk sp [ 1 + m( n 1 Es E = α )] 13.2.10 E sp MPa α 1.1 1.3 n 3 4 Es MPa 13.3 13.3.1 70% 70mm 5% 3.3.2 30% 13.3.3

400mm 13.3.4 13.3.5 13.3.6 13.3.7 0.5d 13.3.8 13.3.9 13.4 13.4.1 7 10d 28d 13.4.2 1% 13.4.3 13.4.4 200m 2 3 14 14.1 14.1.1 5 15m. 24% 65% 14.1.2

14.2 14.2.1 1 0.25 0.50m 0.75 1.00m 2 1/2 2m 14.2.2 GB 50025 14.2.3 300 450mm 2.0 2.5 s = c d max 0.95d 14.2.3 η ρ η ρ d max ρ s m d m ρ d max t/m 3 ρ d t/m 3 d η 0.93 c ρ d1 0.90 14.2.4 ηc ρ d1 η c = 14.2.4 ρ d max t/m 3 6

14.2.5 n A n = 14.2.5 A e A m 2 Ae 1 m 2 A e πd = 4 2 e d e m d e =1. 05s d e =1. 13s 14.2.6 λ c 0.96 2 8 3 7 14.2.7 300 500mm 2 8 0.95 14.2.8 2.0 250kPa 1.4 180kPa 14.2.9 GB 50007 14.3 14.3.1 14.3.2

1 0.50 0.70m 2 1.20 1.50m 14.3.3 12% Q =υρ ( ω ω k d op ) Q m 3 υ m 3 ρ d t/m 3 ω op % ω % k 1.05 1.10 4 6d 14.3.4 1 1 2 1 2 2 3 1.5% 4 5% 5 14.3.5 14.3.6 14.3.7

14.4 14.4.1 λ η c c 14.4.2 l% 1.5% 14.4.3 14.4.4 0.5% 3 15 15.1 15.1.1 6m 160kPa 15.1.2 15.2 15.2.1 1 2 1/2 15.2.2 1.5 2.5m 2 3 15.2.3 500 800mm 15.2.4

GB 50011 15.2.5 200 300mm 15.2.6 l 2 4 15.2.7 7.2.8-3 kpa m 0.2 0.5 n 2 4 f spk kpa 15.2.8 GB 50007 7.2.9 E MPa E MPa sp S 15.2.9 GB 50007 15.3 15.3.1 300 500mm 2 6m 1 8t 15.3.2 15.3.3 1 2 3 1 2 f spk

3 4 0.5m 5 15.3.4 15.3.5 15.4 15.4.1 15.4.2 7 14d 2% 6 15.4.3 15.4.4 0.5% 3 14d 15.4.5 16 16.1 16.1.1 0.10

2.00m d 16.1.2 l 2 3 16.1.3 7 10d 16.1.4 16.2 16.2.1 1 2 16.2.2 10 15 Na 2 0 nsio 2 2.5 1.13 1.15 1.10 Q = Vnd N1 α 16.2.2 Q m 3 V m 3 n

d N1 α 0.60 0.80 2.5 3.3 2 16.2.3 d N d N1 Q = q 16.2.3 d 1 N1 Q t d N q t 16.2.4 1 0.80 1.20m 0.40 0.60m 2 lmm 3 2 3m 2 16.2.5 100 10 16.2.6 2 5m 1.5 2.0 1 2.0 3.0

16.2.7 h h = l + r 16.2.7 l m r m 16.2.8 r 16.3.6 16.3.8 V r = 0.6 16.2.8 3 nl 10 V L 16.2.10 n r 0.40 0.50m. 16.2.9 0.7 0.9m 1.2 2.5m. 16.2.10 V = αβπ r 2 ( l + r) n 16.2.10 α 0.6 0.8 β 1.1 16.3 16.3.1 1 2 3 200kPa 16.3.2 l

2 0.50m 3 2 3h 16.3.3 16.3.4 2 8 16.3.5 16.3.6 60 100mm 20 40mm 20mm 300mm 2 5mm 2 8 16.3.7 1m 3 NaOH 3 35 45kg 90g L 90 100g L. 50 80g L 16.3.8 1 1m 3 M 1m 3 1000M G s = 16.3.8-1 P 1m 3 kg G s M g/l g kg P NaOH 2 1m 3 V M 1

V2 V =1000 M 1 d N 16.3.8-2 N M V 2 = 1000(1 ) 16.3.8-3 d N V L 1 V 2 L d N N N 16.3.9 90 80 16.3.10 2 5L min 16.3.11 1 2 3d 3m 6.3.12 8 12h 1/2 1/4 6.3.13 16.4 16.4.1 7 10d 16.4.2 1m 16.4.3 16.4.4

1 3d 16.4.5 28d 3 28d 90 16.4.6 17 17.0.1 17.0.2 17.0.3 17.0.4 17.0.5 JGJ 123 2000 A A.0.1 A.0.2 A.0.3 50 150mm

3 A.0.4 A.0.5 8 12 2 A.0.6 0.1mm A.0.7 1 2 6 3 2 A.0.8 A.0.9 1 2 2 2 1 s / b s / d 0.015 s b d 2m 2m s / d s / d 0.01 2 5 s / d 0.012 s / b s / d 0.008 3 s / b s / d 0.008 s / b s / d 0.01 4 s / b s / d 0.006 5

A.0.10 3 30 1 1 2 3 2