CN1936199A - Bomb-shelter reinforcing construction process - Google Patents
Bomb-shelter reinforcing construction process Download PDFInfo
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- CN1936199A CN1936199A CN 200610017568 CN200610017568A CN1936199A CN 1936199 A CN1936199 A CN 1936199A CN 200610017568 CN200610017568 CN 200610017568 CN 200610017568 A CN200610017568 A CN 200610017568A CN 1936199 A CN1936199 A CN 1936199A
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- hole
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- wall
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Abstract
The invention discloses air raid shelter reinforcing technology that includes the following steps: beating away a certain width corresponding to cavity ground and spraying concrete to form reinforcing frame; boring on the cavity wall to make the soil pressure near or equal to original oil layer soil pressure; lining with bricks on one side of reinforcing frame, spraying concrete to form reinforce separating with the frame; alternately boring on the ceiling; filling slurry to the space. The invention has the advantages of short construction period and good reinforcing effect.
Description
Technical field
The invention belongs to technical field of building construction, particularly a kind of bomb-shelter reinforcing construction process.
Background technology
The bomb shelter of building in early days is in bad repair with age, and structural strength is poor, can't directly use or directly construct in ground in the above, and scrapping or continuing to utilize all needs to carry out consolidation process.Existing reinforced construction method has two kinds, and the first excavates backfill, promptly hole top is excavated, and be that 3: 7 backfill is tamped with lime and native ratio then; It two is to build arch ring in the hole by laying bricks or stones, supports bomb shelter wall and top cover.Method one engineering quantity is big, and is long in time limit, the cost height; The method two arch ring can not directly contact with the hole body, in fact can't prop up the hole body, misses fire.
Summary of the invention
The object of the invention is to provide the bomb-shelter reinforcing construction process that a kind of duration is short, consolidation effect is good.
For reaching above-mentioned purpose, the present invention adopts following technical scheme: bomb-shelter reinforcing construction process, comprise following operation: (1) is moved towards along the bomb shelter, hole, bomb shelter wall is chiseled certain width at interval and goed deep into former soil layer certain depth, with ground in the hole wall is chiseled corresponding hole, space on chisel certain width, reach the hole wall earthward and chisel the full concrete of space spray and form stiffening frame; (2) at interval boring on the wall of hole is tamped the gap to slip casting between bomb shelter Dong Bi and its outside soil body, makes its earth bearing strength approaching or equal former soil layer earth bearing strength; (3), join to forming to reinforce along brick wall sprayed mortar and stiffening frame and cut off at stiffening frame one brick on edge wall.
Comprise that also operation (4) is in the boring at interval in the bomb shelter of top, hole, bomb shelter corresponding ground; (5) this space was tamped in slip casting between reinforcing cut off in the bomb shelter.
Operation is spaced apart 15-30 rice in (1), and width 0.3-0.8 rice is chiseled on hole wall and ground, and the hole wall is chiseled the embedded depth 0.3-0.5 of place rice; Spray earlier the place of chiseling, ground during sprayed mortar and spray the hole wall again and chisel the place, from bottom to top spray at the wall place of chiseling in hole; In the operation (2), 1-3 rice bores 3 holes of quincuncial arrangement at interval, and pipe laying in the hole treats that concrete strength reaches at 75% o'clock and begins slip casting, and grouting pressure is not less than 0.4MPa; In the operation (3), brick wall thickness is pseudo-ginseng wall or four or eight walls, reinforces and cuts off thickness 0.3-0.8 rice.
Boring interval 5-15 rice in the operation (4), pipe laying in the hole; Treat in the operation (5) that concrete strength reaches at 75% o'clock and begins slip casting, grouting pressure is not less than 0.4-1.0Mpa.
Once more at crown drill hole, hole, pipe laying, high-pressure slip-casting, grouting pressure is not less than 2.0Mpa after 3-7 days in the slip casting end.
Building a wall and reinforcing and reserve passage space on the partition.
Construct last as earlier in the cleaning underground shelter hole remaining rubbish to the hole.
Among the present invention, form stiffening frame,, make hole, bomb shelter body structure intensity increase greatly by building a wall in framework one side, forming to reinforce by the wall sprayed mortar and cut off by raggle on the ground in bomb shelter Dong Bi and hole, sprayed mortar; By boring on the wall of hole, bomb shelter and between hole body and surrounding soil slip casting make hole wall and surrounding soil one integrated mass, pressure-bearing is strong, can directly come into operation once more.Also can by further in crown drill hole, hole, in the hole, reinforce to cut off between slip casting scrap after tamping.Through above-mentioned consolidation process, gap, vault and a sidewall gap of laying bricks is tamped between the hole wall and the soil body, can bear the load that upper body engineering in future etc. passes over, and can not produce lateral deformation.Mud jacking is closely knit in the hole, after the completion of upper body engineering is come into operation, differential settlement can not take place cause the building cracking phenomena.
The specific embodiment
Embodiment 1, bomb-shelter reinforcing construction process comprise successively:
1, hole wall and soil body interstitial treatment:
(1) to above ground portion:
Organic waste remaining in A, the cleaning underground shelter hole is to the hole.
B, measurement unwrapping wire: the trend of underground shelter is guided on the ground, marked unwrapping wire, determine the present position, ground.
C, boring: 10.0 meters at every interval gets out the aperture of Φ 100mm with auger to the bomb shelter from ground, is drilled into the vault in bomb shelter.Use for check hole wall slip casting effect.
(2) under ground portion:
A, stiffening frame: every interval is a spacer for 20 meters, and the hole wall in bomb shelter is chiseled 0.5 meter wide, and it is thick to go into 0.5 meter of the original soil degree of depth, and ground is chiseled 0.5 meter wide in the hole in addition, and the degree of depth is not less than 0.35 meter and sees original soil.To chiseling place's sprayed mortar, bottom spray earlier is full then sprays both sides again, and spray from lower to upper both sides, forms stiffening frame.
B, punching: three apertures (uniform) are bored with air drill in 2.0 meters at every interval on the wall of hole, be blossom type and arrange.
C, pipe laying: built-in length is eight fens steel pipes of 0.5 meter.
D, sealing of hole: pipe laying and Dong Bi gap are shut with cement (high grade) or water glass or other mixture.
E, slurrying: it is stand-by that cement and soil are prepared mixed liquor by a certain percentage, and water/binder ratio 1: 0.5 can add flyash for increasing flowability.
F, slip casting: concrete strength to be sprayed reaches 75%, begins by the high-pressure slip-casting between hole wall and surrounding soil of pipe laying on the wall of hole, and grouting pressure is not less than 0.4MPa.
G, detection: a, slurries must overflow Φ 100mm aperture; After b, slurries solidified, any part was chiseled the full degree of check slip casting.
2, handle in the body of hole: after the hole wall is finished dealing with, handle the cavity in the body of hole again.
(1) to above ground portion:
A, measurement unwrapping wire: the trend of underground shelter is guided on the ground, marked unwrapping wire, determine the present position, ground.
B, boring: 5.0 meters at every interval gets out the aperture of Φ 100mm with auger, bores the vault in bomb shelter, bores dark about 9.0 meters.Effect: 1. check the slip casting effect in the hole.2. sandblast, the 3. 4. Grouting Pipe import of inlet and outlet mouth of the stone charging mouth of pipe.
(2) under ground portion:
A, build a wall: the side at stiffening frame is built the thick brick wall of 500mm, 20 meters at every interval.
B, spray cut off: sprayed mortar on the brick wall body that puzzles, and nature angle of repose is piled up, and thickness is not less than 500mm, forms one with stiffening frame and becomes reinforcing to cut off.
Can come into operation once more in bomb shelter after above-mentioned processing.
Embodiment 2, bomb-shelter reinforcing construction process comprise successively:
1, hole wall and soil body interstitial treatment:
(1) to above ground portion:
Organic waste remaining in A, the cleaning underground shelter hole is to the hole.
B, measurement unwrapping wire: the trend of underground shelter is guided on the ground, marked unwrapping wire, determine the present position, ground.
C, boring: 10.0 meters at every interval gets out the aperture of Φ 100mm with auger, is drilled into the vault in bomb shelter, uses for check hole wall slip casting effect.
(2) under ground portion:
A, stiffening frame: every interval is a spacer for 20 meters, and the hole wall in bomb shelter is chiseled 0.5 meter wide, and it is thick to go into 0.5 meter of the original soil degree of depth, and ground is chiseled 0.5 meter wide in the hole in addition, and the degree of depth is not less than 0.35 meter and sees original soil.To chiseling place's sprayed mortar, bottom spray earlier is full then sprays both sides again, and spray from lower to upper both sides, forms stiffening frame.
B, punching: three apertures (uniform) are bored with air drill in 2.0 meters at every interval on the wall of hole, be blossom type and arrange.
C, pipe laying: built-in length is eight fens steel pipes of 0.5 meter.
D, sealing of hole: pipe laying and Dong Bi gap are shut with cement (high grade) or water glass or other mixture.
E, slurrying: it is stand-by that cement and soil are prepared mixed liquor by a certain percentage, and water/binder ratio 1: 0.5 can add flyash for increasing flowability.
F, slip casting: concrete strength to be sprayed reaches 75%, and beginning is to hole wall and surrounding soil gap high-pressure slip-casting, and grouting pressure is not less than 0.4MPa.
G, detection: a, slurries must overflow Φ 100mm aperture; After b, slurries solidified, any part was chiseled the full degree of check slip casting.
2, handle in the body of hole: after the hole wall is finished dealing with, handle the cavity in the body of hole again.
(1) to above ground portion:
A, measurement unwrapping wire: the trend of underground shelter is guided on the ground, marked unwrapping wire, determine the present position, ground.
B, boring: 5.0 meters at every interval gets out the aperture of Φ 100mm with auger, bores the vault in bomb shelter.Effect: 1. check the slip casting effect in the hole.2. sandblast, the 3. 4. Grouting Pipe import of inlet and outlet mouth of the stone charging mouth of pipe.
(2), under ground portion:
A, build a wall: the side at stiffening frame is built the thick brick wall of 500mm.
B, spray cut off: sprayed mortar on the brick wall body that puzzles, and nature angle of repose is piled up, and thickness is not less than 500mm, forms one with stiffening frame and becomes reinforcing to cut off.
C, filling: reinforcing heap sand, stone between partition, the ratio of sandstone is 1: 10.
D, pre-buried grouting tube: bury earlier 1 of Φ 25PPR floral tube in the bottom, then from apart from ground, bomb shelter 0.8-1.2 rice upwards, level interval 0.8-1.2 rice, pipe lower end vertical interval 0.8-1.2 rice blossom type arranges Φ 25PPR floral tube.Spacing staggers for 0.5 meter slurry outlet is set on the floral tube, and all floral tubes are drawn the top, hole.
E, slurrying: it is stand-by that cement and soil are prepared mixed liquor by a certain percentage, and water/binder ratio 1: 0.5 can add flyash for increasing flowability.
F, slip casting: concrete strength to be cut off reaches 75%, begins by the floral tube high-pressure slip-casting.All filling is closely knit for each space after guaranteeing slip casting, and grouting pressure is not less than 0.4MPa.The bomb shelter underground is if there is the also necessary slip casting of subsoil drain closely knit.According to on-site actual situations, every section (reinforcing between the partition for adjacent two) reserves a floral tube, prepares to adopt in the above closely knit once more hole of grouting pressure of 1.0Mpa.
For preventing after the slip casting can to add an amount of expansion agent, water reducing agent because of water loss causes the space, the slurries of every section slip casting simultaneously must overflow the Φ 100mm aperture that bores.
G, benefit slurry: reach wall place, hole high-pressure slip-casting in the body of hole and finish to bore Φ 100mm aperture once more after three to seven days, bore ground in the hole, bore and be no less than 10.0 meters deeply, spacing 5-10 rice (deciding) on slip casting effect, then bury floral tube (2.2 meters are bored presbyopia apart from the bottom), rubble and dark with 1.0 meters of high grade rapid setting cement sealing of holes is filled out on top, last high-pressure slip-casting, and grouting pressure is not less than 2.0Mpa.
After above-mentioned processing, scrap in the bomb shelter, its upper ground surface can as the soil body carry out ground construction.
Claims (6)
1, bomb-shelter reinforcing construction process, it is characterized in that, comprise following operation: (1) is moved towards along the bomb shelter, hole, bomb shelter wall is chiseled certain width at interval and goed deep into former soil layer certain depth, with ground in the hole wall is chiseled corresponding hole, space on chisel certain width, reach the hole wall earthward and chisel the full concrete of space spray and form stiffening frame; (2) at interval boring on the wall of hole is tamped the gap to slip casting between bomb shelter Dong Bi and its outside soil body, makes its earth bearing strength approaching or equal former soil layer earth bearing strength; (3), join to forming to reinforce along brick wall sprayed mortar and stiffening frame and cut off at stiffening frame one brick on edge wall.
2, bomb-shelter reinforcing construction process as claimed in claim 1 is characterized in that, comprises that also operation (4) is in the boring at interval in the bomb shelter of top, hole, bomb shelter corresponding ground; (5) this space was tamped in slip casting between reinforcing cut off in the bomb shelter.
3, bomb-shelter reinforcing construction process as claimed in claim 1 is characterized in that, operation is spaced apart 15-30 rice in (1), and width 0.3-0.8 rice is chiseled on hole wall and ground, and the hole wall is chiseled the embedded depth 0.3-0.5 of place rice; Spray earlier the place of chiseling, ground during sprayed mortar and spray the hole wall again and chisel the place, from bottom to top spray at the wall place of chiseling in hole; In the operation (2), 1-3 rice bores 3 holes of quincuncial arrangement at interval, and pipe laying in the hole treats that concrete strength reaches at 75% o'clock and begins slip casting, and grouting pressure is not less than 0.4MPa; In the operation (3), brick wall thickness is pseudo-ginseng wall or four or eight walls, reinforces and cuts off thickness 0.3-0.8 rice.
4, bomb-shelter reinforcing construction process as claimed in claim 2 is characterized in that, boring interval 5-15 rice in the operation (4), pipe laying in the hole; Treat in the operation (5) that concrete strength reaches at 75% o'clock and begins slip casting, grouting pressure is not less than 0.4-1.0Mpa.
5, bomb-shelter reinforcing construction process as claimed in claim 4 is characterized in that, once more at crown drill hole, hole, pipe laying, high-pressure slip-casting, grouting pressure is not less than 2.0Mpa after 3-7 days in the slip casting end.
6, as claim 1 or 3 described bomb-shelter reinforcing construction process, it is characterized in that, building a wall and reinforcing and reserve passage space on the partition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610017568XA CN100451247C (en) | 2006-03-27 | 2006-03-27 | Bomb-shelter reinforcing construction process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610017568XA CN100451247C (en) | 2006-03-27 | 2006-03-27 | Bomb-shelter reinforcing construction process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1936199A true CN1936199A (en) | 2007-03-28 |
| CN100451247C CN100451247C (en) | 2009-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610017568XA Expired - Fee Related CN100451247C (en) | 2006-03-27 | 2006-03-27 | Bomb-shelter reinforcing construction process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409666A (en) * | 2011-11-30 | 2012-04-11 | 李海广 | Construction process of pile foundation in air-raid shelter trend |
| CN103046765A (en) * | 2013-01-24 | 2013-04-17 | 李海广 | Construction process for continued application of air-raid shelter |
| CN103195090A (en) * | 2013-04-15 | 2013-07-10 | 合肥建工集团有限公司 | Soft-form-shaped strut structure formed by filling concrete through small hole on underground cavity |
| CN105401948A (en) * | 2015-10-29 | 2016-03-16 | 中铁二局集团有限公司 | Construction method for loosening body strata on two sides of tunnel in plateau cold region after strong shock |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5207038A (en) * | 1990-06-04 | 1993-05-04 | Yermiyahu Negri | Reinforced earth structures and method of construction thereof |
| ITGE20030005A1 (en) * | 2003-01-24 | 2004-07-25 | Ferrari De Nobili S R L | CONTINUOUS METHOD OF REALIZATION OF UNDERGROUND WORKS, |
-
2006
- 2006-03-27 CN CNB200610017568XA patent/CN100451247C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102409666A (en) * | 2011-11-30 | 2012-04-11 | 李海广 | Construction process of pile foundation in air-raid shelter trend |
| CN102409666B (en) * | 2011-11-30 | 2014-05-07 | 李海广 | Construction process of pile foundation in air-raid shelter trend |
| CN103046765A (en) * | 2013-01-24 | 2013-04-17 | 李海广 | Construction process for continued application of air-raid shelter |
| CN103046765B (en) * | 2013-01-24 | 2015-07-15 | 李海广 | Construction process for continued application of air-raid shelter |
| CN103195090A (en) * | 2013-04-15 | 2013-07-10 | 合肥建工集团有限公司 | Soft-form-shaped strut structure formed by filling concrete through small hole on underground cavity |
| CN103195090B (en) * | 2013-04-15 | 2015-04-01 | 合肥建工集团有限公司 | Soft-form-shaped strut structure formed by filling concrete through small hole on underground cavity |
| CN105401948A (en) * | 2015-10-29 | 2016-03-16 | 中铁二局集团有限公司 | Construction method for loosening body strata on two sides of tunnel in plateau cold region after strong shock |
| CN105401948B (en) * | 2015-10-29 | 2018-07-17 | 中铁二局集团有限公司 | Plateau Cold Area tunnel both sides loose media stratum construction method after a kind of macroseism |
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| Publication number | Publication date |
|---|---|
| CN100451247C (en) | 2009-01-14 |
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