CN109667229A - A kind of contrary sequence method foundation pit top temporary trestle bridge plate method for dismounting - Google Patents
A kind of contrary sequence method foundation pit top temporary trestle bridge plate method for dismounting Download PDFInfo
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- CN109667229A CN109667229A CN201811206897.8A CN201811206897A CN109667229A CN 109667229 A CN109667229 A CN 109667229A CN 201811206897 A CN201811206897 A CN 201811206897A CN 109667229 A CN109667229 A CN 109667229A
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- foundation pit
- trestle
- plate
- top plate
- cutting
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling bridges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses temporary trestle bridge plate method for dismounting above a kind of contrary sequence method foundation pit, the following steps are included: S1: whether the intensity for first checking for foundation pit top plate reaches 80% or more design strength, then it is carried out designing cutter number and the number of openings on foundation pit top plate according to design drawing, and determines position of opening；It finally gets out power supply, cutting equipment, hole making drill, split heads, steel tube fastener, flat car and the crane of 380v as needed；S2: ink fountain pop-up position of opening, aperture sequence and cut lengths line are utilized on trestle plate according to design drawing described in S1.The advantage that the present invention has method simple and easy, applied widely, easy to spread has preferable Social benefit and economic benefit.
Description
Technical field
The present invention relates to temporary trestle bridge plates above pit top-down construction technical field more particularly to a kind of contrary sequence method foundation pit
Method for dismounting.
Background technique
With the rapid development in city, people have been not content with ground space, a large amount of subterranean commercial areas, subway, people's air defense,
It comes into being in channel.These underground engineering routes are generally laid along existing road, can seriously destroy city according to open-cut foundation ditch
The normal operation of traffic；And contrary sequence method has protection environment, saves social resources, shortens many advantages, such as construction period, therefore often
For base pit engineering.In order to avoid causing urban transportation to paralyse during contrary sequence method top board construction, the normal life of citizen is influenced,
Guarantee that the normal circulation of contact vehicle can be by temporary trestle bridge after top plate reaches some strength using temporary trestle bridge plate
Plate is removed to restore permanent road.But construction and group that the method for dismounting of existing temporary trestle bridge plate is not unified so far
Scheme is knitted, so that inefficiency, and result in waste of resources, therefore we have proposed temporary trestle bridge plates above a kind of contrary sequence method foundation pit
Method for dismounting.
Summary of the invention
Technical problems based on background technology, the invention proposes temporary trestle bridge plates above a kind of contrary sequence method foundation pit to tear open
Except method.
Temporary trestle bridge plate method for dismounting above a kind of contrary sequence method foundation pit proposed by the present invention, comprising the following steps:
S1: whether the intensity for first checking for foundation pit top plate reaches 80% or more design strength, is then existed according to design drawing
It carries out designing cutter number and the number of openings on foundation pit top plate, and determines position of opening；It finally gets out 380v as needed
Power supply, cutting equipment, hole making drill, split heads, steel tube fastener, flat car and crane；
S2: according to design drawing described in S1 on trestle plate using ink fountain pop-up position of opening, aperture sequence and
Cut lengths line；
S3: according to the position of opening popped up in S2 and aperture sequence, according to " first removing first aperture, aperture after rear dismounting "
Principle carry out opening up hole flushing on trestle plate using hole making drill；
S4: needs carry out protecting using cast-in-place 20mm solid cement mortar cover and waterproof between trestle plate and foundation pit top plate
Then sheath starts to set up the safety supports of various pipelines in the lower section of foundation pit top plate, finally build in the upper surface of waterproof protective layer
Build sleeper wall；
S5: after determining cutting position, cutting tool being installed in place, and cutting sequence, which follows, " it is few first to cut vehicle flowrate
Trestle plate guarantees the best magnitude of traffic flow " principle, the first step retains crossroad middle section since surrounding to pass through；
After the completion of the first step is removed, backfill is carried out to the area immediately and restores road, then selects vehicle flowrate is less in merging road one
Item carries out piecemeal dismounting, and retains confluence, which, which is arranged in, has restored on road；Finally remove heavy traffic
A road trestle plate；
Trestle plate in S6:S5 in cutting, in such a way that disk saws cooperation rope saw to beams of concrete and foundation pit top plate into
Row cutting, and the point using through hole as cut-sytle pollination, the first step, check and ensure that completion has been installed in the support below cutting part
And it is able to satisfy safety requirements；After the completion of the first step, the foundation pit top plate being located above sewage pipe is hung using crane, so
Foundation pit top plate is supported with split heads afterwards, recycles air compressor machine pneumatic pick to strip out the main reinforcement of beams of concrete top two sides to come, most
The main reinforcement in beams of concrete is cut off using cutting equipment afterwards, and in crane handling to flat car, other positions are mixed
Solidifying Tu Liang and foundation pit top plate repeat step S6；
Beams of concrete is completed in cutting with flat car in S7:S6 and foundation pit top plate is transported to concentration and stacks field disposition.
Preferably, in the S1, the power supply of 380v can be replaced the generator of 200kw.
Preferably, in the S4, waterproof protective layer selects sand face SBS waterproof roll.
Preferably, in the S4, combustion gas pipeline and sewage pipeline are hung between foundation pit top plate and trestle plate, and fire
The diameter of tracheal tube and sewage pipeline is between 1.2-1.4D.
Preferably, in the S6, the bearing capacity of crane is between 50-100t.
Preferably, in the S6, beams of concrete and foundation pit top plate after the completion of cutting focus between 5-10t certainly.
Preferably, in the S4, in road backfill, sleeper wall is not removed, and directly backfill is in permanent roads.
Preferably, in the S4, the thickness of sleeper wall is bigger than the diameter of combustion gas pipeline or sewage pipeline.
In the present invention, the temporary trestle bridge board road Demolition Scheme above contrary sequence method foundation pit is summarized as a kind of standard first and is applied
Secondly engineering sequence can greatly reduce the influence in trestle plate demolishing process to traffic, substantially ensure that urban road is normal
It is current；The advantage that the present invention has method simple and easy, applied widely, easy to spread has preferable social benefit and warp
Ji benefit.
Detailed description of the invention
Fig. 1 is trestle plate temporary road floor map；
Fig. 2 is the schematic diagram that first trestle plate is removed；
Fig. 3 is the schematic diagram that second batch trestle plate is removed；
Fig. 4 is the schematic diagram that third batch trestle plate is removed；
Fig. 5 is the schematic diagram that the 4th batch of trestle plate is removed.
Specific embodiment
Combined with specific embodiments below the present invention is made further to explain.
Embodiment
With reference to Fig. 1-5, a kind of contrary sequence method foundation pit top temporary trestle bridge plate method for dismounting proposed by the present invention, including following step
It is rapid:
S1: whether the intensity for first checking for foundation pit top plate reaches 80% or more design strength, is then existed according to design drawing
It carries out designing cutter number and the number of openings on foundation pit top plate, and determines position of opening；It finally gets out 380v as needed
Power supply, cutting equipment, hole making drill, split heads, steel tube fastener, flat car and crane, enclosing and traffic, safety alarming sign are set
Will；
S2: according to design drawing described in S1 on trestle plate using ink fountain pop-up position of opening, aperture sequence and
Cut lengths line；
S3: according to the position of opening popped up in S2 and aperture sequence, according to " first removing first aperture, aperture after rear dismounting "
Principle carry out opening up hole flushing on trestle plate using hole making drill, and aperture is not less than 100mm, and when aperture avoids early evening peak
Phase；
S4: there are 250 combustion gas pipeline of ψ and 300 combustion gas pipeline of ψ each one, 250 combustion gas pipeline of ψ and ψ below trestle plate
300 combustion gas pipelines are suspended on trestle plate in earth excavation with the steel tube fastener of 22# channel steel and 10# channel steel upwards, are needed
It carries out then starting using cast-in-place 20mm solid cement mortar cover and waterproof protective layer between trestle plate and foundation pit top plate
The lower section of foundation pit top plate sets up the safety supports of various pipelines, finally in the alley of the brick 400mm thickness of the upper surface of waterproof protective layer
Wall prevents finger stone from directly pounding on pipeline；
S5: after determining cutting position, cutting tool being installed in place, and cutting sequence, which follows, " it is few first to cut vehicle flowrate
Trestle plate guarantees the best magnitude of traffic flow " principle, the first step should since surrounding, retain crossroad middle section so as to
It is current；After the completion of the first step is removed, backfill is carried out to the area immediately and restores road, then selects vehicle flowrate in merging road less
A progress piecemeal dismounting, and retain confluence, which, which is arranged in, has restored on road, finally removes traffic
A busy road trestle plate；
Trestle plate in S6:S5 in cutting, in such a way that disk saws cooperation rope saw to beams of concrete and foundation pit top plate into
Row cutting, and the point using through hole as cut-sytle pollination, the first step, check and ensure that completion has been installed in the support below cutting part
And it is able to satisfy safety requirements；After the completion of the first step, the foundation pit top plate being located above sewage pipe is hung using crane, so
Foundation pit top plate is supported with split heads afterwards, recycles air compressor machine pneumatic pick to strip out the main reinforcement of beams of concrete top two sides to come, most
The main reinforcement in beams of concrete is cut off using cutting equipment afterwards, in cutting, beveling is not less than 30 °, and with crane handling
Onto flat car, main reinforcement is cut off in lifting, handling entrucking ensures that beam is not fallen out with this and smashes sewage pipeline, other positions
The beams of concrete and foundation pit top plate set repeat step S6, and specific dismounting sequence is as follows: the branch first in dismounting Fig. 2 bold box
Beam and trestle plate are supportted, and restores 1. area's road, then removes the trestle plate in Fig. 3 bold box, North and South direction traffic during this
Current from trestle plate, east-west direction is current from the road 1. backfilled, and the area ②③ trestle plate carries out 2. area road after the completion of removing
The trestle plate in Fig. 4 bold box is subsequently removed in road backfill, and east-west direction traffic is led to from the road that 1. area backfills during this
Row, North and South direction traffic is current from the road that the area ①② backfills, and after the completion of north side trestle plate is removed, that is, it is extensive to carry out 3. area's road
It is multiple, the trestle plate in Fig. 5 bold box is finally removed, east-west direction traffic is current from the road that the area ②③ backfills during this,
North and South direction traffic is current from the road that the area ①② backfills, and after the completion of southern side trestle plate is removed, that is, carries out 4. area's road recovery,
Trestle plate, which is removed, to be completed；
Beams of concrete is completed in cutting with flat car in S7:S6 and foundation pit top plate is transported to concentration stacking field and disposes, city
Lower engineering is in the area that makes trouble, therefore lifting operation carries out at night substantially.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. temporary trestle bridge plate method for dismounting above a kind of contrary sequence method foundation pit, which comprises the following steps:
S1: whether the intensity for first checking for foundation pit top plate reaches 80% or more design strength, then according to design drawing in foundation pit
It carries out designing cutter number and the number of openings on top plate, and determines position of opening；It finally gets out the electricity of 380v as needed
Source, cutting equipment, hole making drill, split heads, steel tube fastener, flat car and crane；
S2: ink fountain pop-up position of opening, aperture sequence and cutting are utilized on trestle plate according to design drawing described in S1
Dimension line；
S3: according to the position of opening popped up in S2 and aperture sequence, according to the original of " first removing first aperture, aperture after rear dismounting "
It then carries out opening up hole flushing on trestle plate using hole making drill；
S4: needs are carried out between trestle plate and foundation pit top plate using cast-in-place 20mm solid cement mortar cover and waterproofing protection
Layer, then starts to set up the safety supports of various pipelines in the lower section of foundation pit top plate, finally builds in the upper surface of waterproof protective layer
Sleeper wall；
S5: after determining cutting position, cutting tool being installed in place, and cutting sequence, which follows, " first cuts the few trestle of vehicle flowrate
Plate guarantees the best magnitude of traffic flow " principle, the first step retains crossroad middle section since surrounding to pass through；First
After the completion of step is removed, backfill is carried out to the area immediately and restores road, then select in merging road vehicle flowrate less one into
Row piecemeal is removed, and retains confluence, which, which is arranged in, has restored on road；Finally remove the one of heavy traffic
Road trestle plate；
Trestle plate in S6:S5 cuts beams of concrete and foundation pit top plate in such a way that disk saws cooperation rope saw in cutting
Cut, and the point using through hole as cut-sytle pollination, the first step, check and ensure the support below cutting part installed completion and
It is able to satisfy safety requirements；After the completion of the first step, the foundation pit top plate being located above sewage pipe is hung using crane, is then used
Split heads is supported foundation pit top plate, and air compressor machine pneumatic pick is recycled to strip out the main reinforcement of beams of concrete top two sides to come, last benefit
The main reinforcement in beams of concrete is cut off with cutting equipment, and in crane handling to flat car, the concrete of other positions
Beam and foundation pit top plate repeat step S6；
Beams of concrete is completed in cutting with flat car in S7:S6 and foundation pit top plate is transported to concentration and stacks field disposition.
2. temporary trestle bridge plate method for dismounting above contrary sequence method foundation pit according to claim 1, which is characterized in that the S1
In, the power supply of 380v can be replaced the generator of 200kw.
3. temporary trestle bridge plate method for dismounting above contrary sequence method foundation pit according to claim 1, which is characterized in that the S4
In, waterproof protective layer selects sand face SBS waterproof roll.
4. temporary trestle bridge plate method for dismounting above contrary sequence method foundation pit according to claim 1, which is characterized in that the S4
In, combustion gas pipeline and sewage pipeline, and combustion gas pipeline and sewage pipeline are hung between foundation pit top plate and trestle plate
Diameter between 1.2-1.4D.
5. temporary trestle bridge plate method for dismounting above contrary sequence method foundation pit according to claim 1, which is characterized in that the S6
In, the bearing capacity of crane is between 50-100t.
6. temporary trestle bridge plate method for dismounting above contrary sequence method foundation pit according to claim 1, which is characterized in that the S6
In, beams of concrete and foundation pit top plate after the completion of cutting focus between 5-10t certainly.
7. temporary trestle bridge plate method for dismounting above contrary sequence method foundation pit according to claim 1, which is characterized in that the S4
In, in road backfill, sleeper wall is not removed, and directly backfill is in permanent roads.
8. temporary trestle bridge plate method for dismounting above contrary sequence method foundation pit according to claim 1, which is characterized in that the S4
In, the thickness of sleeper wall is bigger than the diameter of combustion gas pipeline or sewage pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206897.8A CN109667229A (en) | 2018-10-17 | 2018-10-17 | A kind of contrary sequence method foundation pit top temporary trestle bridge plate method for dismounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811206897.8A CN109667229A (en) | 2018-10-17 | 2018-10-17 | A kind of contrary sequence method foundation pit top temporary trestle bridge plate method for dismounting |
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| Publication Number | Publication Date |
|---|---|
| CN109667229A true CN109667229A (en) | 2019-04-23 |
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ID=66142648
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811206897.8A Pending CN109667229A (en) | 2018-10-17 | 2018-10-17 | A kind of contrary sequence method foundation pit top temporary trestle bridge plate method for dismounting |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07253290A (en) * | 1994-03-15 | 1995-10-03 | Hisaka Works Ltd | Cold reserving case |
| CN103590424A (en) * | 2013-11-29 | 2014-02-19 | 李涛 | Road passage underground project construction method |
| CN106894421A (en) * | 2017-01-19 | 2017-06-27 | 中国建筑第八工程局有限公司 | The method for dismounting of internal support of foundation pit beam |
| CN108612128A (en) * | 2018-05-15 | 2018-10-02 | 北京市市政工程设计研究总院有限公司 | The dual or multi hole tunnel framing of open cut single layer is against support replacement construction method |
-
2018
- 2018-10-17 CN CN201811206897.8A patent/CN109667229A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07253290A (en) * | 1994-03-15 | 1995-10-03 | Hisaka Works Ltd | Cold reserving case |
| CN103590424A (en) * | 2013-11-29 | 2014-02-19 | 李涛 | Road passage underground project construction method |
| CN106894421A (en) * | 2017-01-19 | 2017-06-27 | 中国建筑第八工程局有限公司 | The method for dismounting of internal support of foundation pit beam |
| CN108612128A (en) * | 2018-05-15 | 2018-10-02 | 北京市市政工程设计研究总院有限公司 | The dual or multi hole tunnel framing of open cut single layer is against support replacement construction method |
Non-Patent Citations (2)
| Title |
|---|
| 曹源麟: "轨道2号线一期全面动工主干道拥堵将成常态", 《HTTPS://WWW.SOHU.COM/A/71943379_170917》 * |
| 童晓刚，裘国荣，诸国娟: "绳锯切割法在基坑支撑拆除工程中的应用", 《浙江建筑》 * |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190423 |
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| RJ01 | Rejection of invention patent application after publication |