基坑工程内支撑技术规程

DB J DB 111940-2012 J12162-2012 4 1J J'' 1"J-J Technical specification of internal bracing for excavation engineering 2012-12-12 2013- 07- 01 1 Wt a * Jk A-1-5.1. Technical specification of internal bracing for excavation engineering DB 111940-2012 J 12162-2012 2013 7 2013 1 2013] 30 2011 2011] 74 DB11/940-2012 2013 7 1 3.1.10, 4.2.7, 4.9.1, 4.9.4 2013 1 14 2012] 138 2012] 03 J12162-2012 3 4. 2. 7, 4. 9. 1, 4. 9. 4 2012 10 16 10, DB 11 / 940-2012 Ii 3. 1. 10, 4. 2. 7, 4. 9. 1, 4. 9. 4 2011 2011] 74 6 2 3 3 1 4 5 6, A 100055 1011 A 5 E-mai l: cjj ch@sohu: com) o 5 DBI1-/ 940-2012 6 DB11/ 940- 2012 DB11 / 940-2012 1 2 3 3. 1 3. 2 1 ................................................................ 2 3 ................................................. .3 4 4 3.3 ........................................................ 8 3. 4 ........................................................ 12 13 ........................................................ 13 .................. ..................................... 13 4 14 16 4 4. 4. 4. 4. 1 2 3 4 4. 5 4. 6 X 17 ................................ 19 4. 7 4. 8 4. 9 5 5. 5. 5. 5. 5. lq 1 2 3 4 5 ........................................................... ........................................................ ..................................................... .......... ................................... ......... .................................................. 20 20 21 22 22 22 23 24 26 28 9 DBI1 / 940-2012 6. 1 .................. ........................ ... 28 6 2 28 6. 3 - 30 A -33 .................. ..................................... 34 ..................... ..................................... 35 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 DB11 / 940-2012 Co n t e n t s 1 1 1 General provisions 2 3 T e r ms Design 3. 1 Gener al 3. 2 Type selectings and settings 3. 3 Structural calculation . . . . . . . . 3. 4 Structure design 4 Co n s t r u c t i o n d - d Q n 1 j 1 - 4. 1 Gener al 4. 2 Earthwork excavation . . . ... . . 4. 3 Site acceptance for materials 4. 4 Inst al l at i on of st eel mi ddl e beam 4. 5 4. 6 Installation of steel bracing Construction of RC internal bracing structure 4.7 P r est r essi ng s j e 0 1 1 1 1 U e t s l l - 0 n n U QC InternalbracingrePlacement 4. 9 Removingofi nternal braci ng SMoni t or i ngandmeasur ement 4.8 5 1 9 1 9 Gener al Q9 5 2 Met hodofmoni t ori ngandrneasurement 5 3 Arrangeofmoni t ori ngpoi nt 5 4 Requirementformonitoring 5 5 Monitoringinformationprocessing 6AccePtanceofconstructionqua ity 9 n o 9 - 9 0 0 l l DB1 1 / 9 4 0 - 2 0 1 2 6. 1 Procedue and organization of acceptance . . . . . . . . . . . . . . . 28 6. 2 Domi nant i t ems 6. 3 Ge ne r a l ........................................ i t e ms . . . . . . . . . . . . 28 30 Appendix A Maps of common disconnectable coupling and nodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Explanation of wording in this standard ........................... .34 List of normative standards ......... ...... ........... ......... . 35 Cl ause expl anat i on . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 12 DB1 1 / 9 4 0 - 2 0 1 2 1 1.0. 1 1.0.2 1.0.3 1.0.4 kilt, DB1 1 / 9 4 0 - 2 0 1 2 2 2.0. 1 internal bracing system 2. 0. 2 mi ddl e beam 2. 0. 3 t op beam 2.0.4 2.0. 5 2.0.6 2. 0. 7 2. 0. 8 inclined bracing shear pedaling disconnectable coupling pal l et s l ot cut DB11/ 940-2012 3 3. 1 3.1.1 3.1.2 3.1.3 3.1.4 1 2 3 4 5 6 3. 1. 5 3.1.6 3.1.7 3.1.8 3. 1. 3. 1. 10 3 DB11/ 940-2012 3. 1. 11 3. 1. 12 GB50017 GB50010 3. 1. 13 3. 2 1 3. 2. 1 2 3 4 5 6 3. 2. 2 1 2 H Vil 3 C2 5 1/8 (D15mm, 200mm 250mm 30d; 4 Wmm DB11/ 940- 2012 4 5 JGJ145 6 2 7 8 9 10 1/ 1000 3. 2. 3 1 2 Q235 1/ 1500; H C25; 3 4 5 DBl l / 940- 2012 5 6 9m 60 7 8 4m; 9 500mm 600mm 10 11 3 m; 12 13 14 6 M DB11 / 940- 2012 15 30%, 75 %; 16 17 X 9m 4 m; 18 1/ 200 3. 2. 4 1 25m 2 3 4 15m; H H 5 600mm 4 6 1/50 7 DBI 1/ 940- 2012 7 8 JGJ94 3. 2. 5 H 3.2. 6 lOmm 3. , 2. 7 3.2. 8 3. 3 3.3. 1 3.3. 2 0. 5kN/ mo 3. 3. 3 1 2 .9 8 0. 8 0. 6 DB1. 1 / 940- 2012 - 0. 7 0 3 3. 3. 4 1 2 3 4 5 3.3.5 1 2 3.3.6 y o F CR (3. 3. 6) yo 1. 10, 1. 00, 0. 90; 9 DB11 / 940-2012 F 1. 25 1. 0; 3. 3. 7 1 1. 5 .8 .9 2 3. 3. 8 1 2% 3 %a 40mm; 20mm 2 3.2.3 3. 2. 4 (2), (6) 1. 5- 2. 0 3 1. 2 1. 4 10 1. 2 DB11 / 940- 2012 5 0. 8 9 6 1. 1- 1. 2 7 GB50010 GB50017 3. 3. 9 I 2 1/50 3 5 3. 3. 10 1 2 1/800; 1/ 600- 3 1/ 1000. 1/ 15000 3.3. 11 GB50017 3.3.12 3.3.13 11 DB11/ 940- 2012 GB50017 3.3-14 GB50010 3. 4 3.4. 1 100 120 250 3. 4. 2 3. 4. 3 3. 4 . 4 3. 4. 5 3.4. 6 3. 4. 7 12mm 3. 4. 8 GB50017 0, 8mm o GB50010 ( ( DB11 / 940-2012 4 4. 1 4. 1. 1 4.1.2 4. 1 . 3 4. 1. 4 4. 1. 5 4.1.6 4.1.7 4.1.8 4. 1. 4. 2 4.2. 1 70% 91 4.2.2 13 DB11 / 940-2012 4.2.3 4. 2. 4 4.2.5 4. 2. 6 4. 2. 7 4. 2. 8 I 8m 1: 1; 2 6m; 3 2m 1: 1 4. 3 4.3.1 1 2 3 4 5 14 DB11/ 940- 2012 6 1/2; 7 8 9 JGJ81 4. 3. 2 4.3.3 4. 3. 4 1 2 3 4. 3. 5 4. 3. 6 H 2 4. 3. 7 1 5 DB11 / 940-2012 2 4. 4 4.4. 1 4.4. 2 4.4. 3 4. 4. 4 1 2 3 4 5 16 2 DB11 940-2012 4.4. 5 M20 C30 4. 4. 6 150mm 4. 5 4. 5. 1 1 2 3 4 5 6 4.5. 2 24h 4.5.3 A 4. 5. 4 17 DB11/ 940-2012 1 20mm; 2 GB50205 3 JGJ81 4.5.5 1 2 3 10 4. 5. 6 1 2 4. 5. 7 I JGJ81 2 1 5 m; 3 18 DB11 / 940- 2012 4 H 5 6 7 4.5.8 1 2 3 4 5 6 4. 6 AV 4. 6. 1 4. 6. 2 GB50204 19 DBI I / 940- 2012 4. 6. 3 4. 6. 4 4. 6. 5 1/3 4. 6. 6 4. 5. 7 4. 7 4. 7. 1 4. 7. 2 4. 7. 3 1 2 4. 7. 4 4. 8 4. 8. 1 DB11/ 940- 2012 70 4. 8. 2 4. 8. 3 4.8.4 1 2 4. 9 4. 9. 1 4. 9. 2 4. 9. 3 4. 9. 4 4. 9. 5 4.9. 6 ffn DB11 / 940-2012 4i 5. 1 5.1.1 5.1.1 GB50497 5 . 1 . 1 5.1.2 5. 1. 3 5.1.4 5. 2 5.2.1 22 DB 11 / 940-2012 5.2. 2 5. 2. 3 5. 2.4 5. 3 5. 3. 1 2 3 3 1/ 3 4 1/ 3 4 2 5 5. 3. 2 4 5 23 DB11/ 940- 2012 1/3 5. 3. 3 5% 5.3.4 10% 3 5. 4 5.4. 1 1 3 2 3 5.4.2 3 5.4.3 1 2 0. 15%F. s ; 5. 4. 3 DB11 / 940-2012 5. 4. 3 m) 5 l 1 5 5^- 10 ld 10-15 >15. 1 Zd 1 2d 1 2dl 1 ld 1 ld 1 2 ld 2 1d- 2 d 2 d- 1 l d- l l tn 5 10 10 7 d m 14 5 7 d 14 i dl ld 7 1 ld 1 14 1 3d 1 Zd 1 ld 1 sd 1 3d 1 2d d- 28 1 7d 1 5d 1 3d 3d- 5 1 Zd 1 Zd 1 ld 28 10 7 1 2d 1 Zd 14 1 3d 1 3d 1 7d 1 5d 28- 1 1Od 1 1od 28- 1 2 3d 1 - 1 - l d 3 4 3 5 4 4 1 2 1 15 F 5 7d 1 2d 1 3Od 3 5 4 5 25 DB11 / 940-2012 1 2 /7d 3 5. 4. 5 1 / 2d 1 30d; 1 5. 4. 5 ( mm) ( mm) ( mm) DSOE DSO5 I 0. 3 0. 1 0. 15 J - 0. 5 n - 0. 3 0. 30 L 1/2 DSO5 DS0 5 A n 5 4 6 5 4 5 5 4 7 5 4 7 5 4 7 D 5 5 5 5 1 5 5 2 26 5 L DB11 / 940- 2012 3 4 5.5. 3 5.5.4 2 4 5.5.5 5.5.6 5. 5 . 7 5.5. 8 c DB11 / 940- 2012 6 6. 1 6.1.1 6. 1. 2 6.1.3 6.1.4 6.1.5 6. 2 6.2. 1 6.2. 2 30 6. 2. 3 2 0 mm 50mmo 30 28 DB11 / 940- 2012 6.2.4 50kNo 6. 2. 5 6. 2. 6 - PM 30 6. 2. 7 6. 2. 8 30 /a 29 DBI I / 9 4 0 - 2 0 1 2 6. 2. 9 GB50205 . 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J 5. 1 5. 1.3 70 % 80 5.1.4 5. 4 5.4.3, 5.4.4 51 DB11 / 940-2012 5. 4. 3 5.4.3 2 3 5. 4. 3 5. 5 5.5. 5 5. 5 . 6 DB11/ 940-2012 i, 6. 1 6.1.2 6.1.4 6. 2 6.2.2 6.2.3 6.2. 5 6.2. 6-6.2. 8 6. 2. 9, 6.2. 10 DB11/ 940- 2012 6. 3 6.3.2, 6.3.5 6. 3. 3 ( DB1I / 940- 2012) ( 2013 2 I 100055 63989081, 63964562 www. cjjch. net cj j ch@sohu. com 20 5