CN106065628B - Based on the major diameter running water pipe security protection construction method faced forever with reference to theory - Google Patents
Based on the major diameter running water pipe security protection construction method faced forever with reference to theory Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/48—Foundations inserted underneath existing buildings or constructions
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
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Abstract
The invention belongs to the technical field that major diameter running water pipe security protection in subway construction is constructed, and in particular to a kind of based on the major diameter running water pipe security protection construction method faced forever with reference to theory.It is a kind of as follows based on the major diameter running water pipe security protection construction method faced forever with reference to theory, construction procedure：1）Row plus structure construction；Row plus structure are provided with some rows, the row of each row plus structure include being arranged on the concrete plate washer of water pipe both sides, plain concrete is supported by the downside of water pipe, described concrete plate washer and plain concrete are arranged on crossbeam, some columns are provided with the downside of crossbeam, for upright supports on concrete pipe base, described crossbeam is the top plate of subway accessory structure, and crossbeam is placed on column by temporary support；2）, earthwork unit excavate；3）, accessory structure top board construction.Construction technology of the present invention is simple, practical value is high, and using effect is good.
Description
Technical field
The invention belongs to the technical field that major diameter running water pipe security protection in subway construction is constructed, and in particular to a kind of
Based on the major diameter running water pipe security protection construction method faced forever with reference to theory.
Background technology
In subway accessory structure work progress, the facilities such as cable, running water pipe, accessory structure be present above accessory structure
Overlying soil is excavated on the premise of need to protecting installation securitys such as running water pipes, and accessory structure coagulation is carried out after excavating soil layer
Soil pours.In recent years, developing rapidly with China's urban construction, increasing city starts to build subway, for side
Just citizens' activities, subway accessory structure must pass through the major diameter originally permanent installation such as pipe, and major diameter running water pipe generally all supplies
The domestic water of a large amount of residents of Yingcheng City, effect are extremely important.Security protection for the running water pipe of conventionally form, using facing
When structure it is protected.But in the case of major diameter running water pipe is passed through, in order to meet Clearance requirement, comfort level, blind
The indexs such as people's passage, economy, accessory structure design the distance between top surface and water pipe bottom surface very little, about 15cm~30cm,
The construction of accessory structure has been stretched into accessory structure according to conventional method, the crossbeam of temporary structure, causes accessory structure
Reinforcing bar colligation it is difficult even can not colligation, and destroy the stress of accessory structure, and remove and face that structure is cumbersome, economic benefit is bad
Deficiency and can not meet the technical requirements of related specifications.
The content of the invention
In the presence of the present invention is in order to solve the problems, such as background technology, especially provide a kind of based on facing forever with reference to the big of theory
Diameter running water pipe security protection construction method.
The present invention takes following technical scheme：It is a kind of to be applied based on the major diameter running water pipe security protection faced forever with reference to theory
Work method, construction procedure are as follows：1）Row plus structure construction；Row plus structure are provided with some rows, and the row of each row adds structure to include setting
The concrete plate washer in water pipe both sides is put, is supported by plain concrete on the downside of water pipe, described concrete plate washer and plain concrete are set
Put on crossbeam, be provided with some columns on the downside of crossbeam, for upright supports on concrete pipe base, described crossbeam is the attached knot of subway
The top plate of structure, crossbeam are placed on column by temporary support；2）, earthwork unit excavate；3）, accessory structure top board construction.
Row adds concretely comprising the following steps for structure construction：
1. measure of pile position：Accurately measured using total powerstation before drilled pile construction, determine pile foundation（14）Position.
2. exploratory trench excavates：Before Spiral digging machine drilling, exploratory trench is excavated to stake point position, verifies underground utilities and barrier, exploratory trench
Be arranged on stake point position, can single-point excavate, can also excavate integral trial trench.
3. rig is installed：After rig is in place, leveling support, it is ensured that bit central and casing center on a plumb line,
5cm is cannot be greater than with the centrical tolerance in hole, gradient cannot be greater than 1%.
4. bore operation：After spudding in, rig leveling is aligned and drilled, align stake position, confirm to start after room is errorless
Drilling.
5. column and fabrication of reinforcing cage：The making of steel reinforcement cage and column, live steel reinforcement cage are carried out while drilled pile construction
And after column machines, steel reinforcement cage and column are welded to connect.
6. pile foundation concreting：After steel reinforcement cage and column decentralization, pile foundation concrete is poured.
Earthwork unit excavates carries out out method using step excavation method, and the method for realizing its process is as follows：
The first step, hand excavation to running water pipe tip position, running water pipe ttom of pipe absolute altitude is calculated with this, specifies ttom of pipe mark
The high and high relation of structure roof top mark, if a height of H1 of running water pipe top mark, then running water pipe ttom of pipe absolute altitude H2=H1-D, D are certainly
Water pipe diameter, the absolute altitude H3 of structure roof can be checked in design drawing, ttom of pipe and the distance on structure roof top are H2-H3.
Second step, it is excavated to the running water pipe bottom of the 1st row's crossbeam corresponding position, the gradient 1：1, side slope is sprayed using C20 microliths
Concrete strengthening is penetrated, running water pipe bottom excavation line is 0.5m away from the 1st row's crossbeam edge.
3rd step, excavate boundary line from the running water pipe bottom of the 1st row's crossbeam corresponding position and be excavated to accessory structure downward vertically
Top plate bottom 5cm, if running water pipe has joint, to using steel plate anchor ear to reinforce at water pipe head；Subsequent construction ground mould is simultaneously being stood
Capital sets temporary support, colligation crossbeam reinforcing bar and concrete plate washer reinforcing bar, pours crossbeam concrete to Roof is designed, treats horizontal stroke
Beam concrete reaches required by design after intensity, construction waterproofing paint and pours waterproofing protection layer concrete, cover concrete
Pour to water pipe bottom above 100mm；After crossbeam concrete and cover concrete have been constructed, the side shield coagulation of water pipe two is poured
Soil, backfilled at baffle position with plain concrete.
4th step, after the 1st row's bent structure is constructed, repeat second and third above-mentioned step and complete the 2nd earthwork unit and the
The construction of 2 row's bent structures, continue to repeat second and third above-mentioned step, progressively excavate and push ahead until all bent structures are applied
Work finishes, advance distance centre-to-centre spacing between framed bent.
Accessory structure top board construction specific method is as follows：
Surplus earth excavation is carried out after the completion of water pipe protects safety protection structure, for different positions using different
Earthwork digging method, earth excavation position are divided into water pipe and fender post intersection and remaining conventional position.
The earth excavation of water pipe and fender post intersection：
Using hand excavation, stage excavation, after the completion of this layer of earth excavation, bar planting is carried out immediately, bar planting is completed meeting soil
Side, lateral template of constructing immediately after, reinforcing bar colligation, and reserved Grouting Pipe, reinforcing bar colligation are carried out after the completion of template construction immediately
After-pouring C35 early strength concretes are completed, after concrete strength reaches C25, carry out slip casting immediately, grouting pressure 0.2MPa,
The purpose of slip casting is the gap of the filling soil body, and next layer of earth excavation is carried out after grout cures, until being excavated to foundation ditch bottom.
Remaining conventional position earth excavation：Excavation of foundation pit is to substrate；Excavation of foundation pit uses the side of hand fit's mechanical equivalent of light excavation
Formula is carried out, and sends special messenger to command machinery in digging process, forbids digging machine to produce collision or disturbance to interim column.
After the completion of excavation of foundation pit, accessory structure bottom plate of constructing, side wall of then constructing, applying for roof timbering template is then carried out
Work, colligation roof steel bar after formwork erection is complete, the galvanized steel plain sheet waterstop at Embedment Construction seam, casting concrete to designing Roof,
Required by crossbeam concrete reaches design after intensity, construction waterproofing paint and waterproofing protection layer concrete is poured, protective layer mixes
Solidifying soil is poured to water pipe bottom above 100mm.
Compared with prior art, the present invention has the effect that：Construction technology is simple, practical value is high, and using effect is good,
Can the requirement of sufficient related specifications and water for city's residential use demand, need not both reduce the absolute altitude of gateway top plate, passenger
Comfort level meets to require, transverse and longitudinal beams of concrete need not be removed again, will not cause the secondary broken of water pipe protection system
It is bad.Improve operating efficiency, shorten the duration, reduce construction cost, achieve good economic benefit.
Brief description of the drawings
Fig. 1 is running water pipe schematic longitudinal section；
Fig. 2 is running water pipe schematic cross-sectional view；
Fig. 3 is to face combining structure schematic cross-sectional view forever；
Fig. 4 is to face combining structure schematic longitudinal section forever；
Fig. 5 is that column welds schematic diagram with steel reinforcement cage；
Fig. 6 is column construction schematic diagram；
Fig. 7 is earth excavation step 1 figure；
Fig. 8 is earth excavation step 2 figure；
Fig. 9 is earth excavation step 3 figure；
Figure 10 attaches most importance to multiple earth excavation schematic diagram；
In figure：1- accessory structures, 2- accessory structures bottom, 3- accessory structures top, 4- accessory structures bottom soil property, 5-
Fender post, 6- running water pipes, 7- overlying soils, 8- road surfaces, 9- concrete plate washers, 10- plain concretes, 11- crossbeams, 12- are interim
Bearing, 13- columns, 14- pile foundations, 15- columns sew part, and 16- column tie-rods, 17- pile foundation cage bars, 18- solder designs, 19- is originally
At the top of water pipe, 20- microlith gunite concretes, 21- running water pipes bottom.
Embodiment
It is a kind of based on the major diameter running water pipe security protection construction method faced forever with reference to theory, Specific construction step is such as
Under：
1）Row plus structure construction, row plus structure are provided with some rows, and the row of each row adds structure to include being arranged on the both sides of water pipe 6
Concrete plate washer 9, the downside of water pipe 6 is supported by plain concrete 10, and described concrete plate washer 9 and plain concrete 10 are arranged on horizontal stroke
On beam 11, the downside of crossbeam 11 is provided with some columns 13, and column 13 is supported on concrete pipe base 14, and described crossbeam 11 is subway
The top plate of accessory structure, crossbeam 11 are placed on column 13 by temporary support 12；（As shown in Figure 1,2,3, 4）
1. measure of pile position：Accurately measured using total powerstation before drilled pile construction, determine pile foundation（14）Position；
2. exploratory trench excavates：Before Spiral digging machine drilling, it is necessary to exploratory trench is excavated to stake point position, verifies underground utilities and barrier,
Exploratory trench is arranged on stake point position, can single-point excavate, can also excavate integral trial trench；
3. rig is installed：After rig is in place, leveling support, it is ensured that bit central and casing center on a plumb line,
5cm is cannot be greater than with the centrical tolerance in hole, gradient cannot be greater than 1%；
4. bore operation：After spudding in, rig leveling is aligned and drilled, align stake position, confirm to start after room is errorless
Drilling；
5. column and fabrication of reinforcing cage：The making of steel reinforcement cage and column, live steel reinforcement cage are carried out while drilled pile construction
And after column machines, steel reinforcement cage and column are welded to connect,（As shown in Figure 5,6）
6. pile foundation concreting：After steel reinforcement cage and column decentralization, pile foundation concrete is poured；
2）, earthwork unit excavate；
As shown in Fig. 7,8,9 and 10, method is carried out out using step excavation method, the method for realizing its process is as follows：
The first step, hand excavation to running water pipe tip position, running water pipe ttom of pipe absolute altitude is calculated with this, specifies ttom of pipe mark
The high and high relation of structure roof top mark；
Second step, it is excavated to the running water pipe bottom of the 1st row's crossbeam corresponding position, the gradient 1：1, side slope is sprayed using C20 microliths
Concrete strengthening is penetrated, running water pipe bottom excavation line is 0.5m away from the 1st row's crossbeam edge；
3rd step, excavate boundary line from the running water pipe bottom of the 1st row's crossbeam corresponding position and be excavated to accessory structure downward vertically
Top plate bottom 5cm, if running water pipe has joint, to using steel plate anchor ear to reinforce at water pipe head；Subsequent construction ground mould is simultaneously being stood
Capital sets temporary support, colligation crossbeam reinforcing bar and concrete plate washer reinforcing bar, pours crossbeam concrete to Roof is designed, treats horizontal stroke
Beam concrete reaches required by design after intensity, construction waterproofing paint and pours waterproofing protection layer concrete, cover concrete
Pour to water pipe bottom above 100mm；After crossbeam concrete and cover concrete have been constructed, the side shield coagulation of water pipe two is poured
Soil, backfilled at baffle position with plain concrete；
4th step, after the 1st row's bent structure is constructed, repeat second and third above-mentioned step and complete the 2nd earthwork unit and the
The construction of 2 row's bent structures, continue to repeat second and third above-mentioned step, progressively excavate and push ahead until all bent structures are applied
Work finishes, advance distance centre-to-centre spacing between framed bent；
3）, accessory structure top board construction；
Surplus earth excavation is carried out after the completion of water pipe protects safety protection structure, for different positions using different
Earthwork digging method, earth excavation position are divided into water pipe and fender post intersection and remaining conventional position.
The earth excavation of water pipe and fender post intersection：
Using hand excavation, each earth excavation is highly 1m, and 6 layers altogether, excavation thickness is 800mm, and earth excavation is complete
Cheng Hou, bar planting is carried out immediately, the reinforcing bar of bar planting is HRB400 (22mm), and the depth for being implanted into fender post is 500mm.Bar planting is completed
The edge-on lateral template of constructing of soil is met, carries out reinforcing bar colligation after the completion of template construction immediately, and reserved Grouting Pipe, reinforcing bar colligation are complete
Into after-pouring C35 early strength concretes, after concrete strength reaches C25, slip casting, grouting pressure 0.2MPa, note are carried out immediately
The purpose of slurry is the gap of the filling soil body.Next layer of earth excavation is carried out after grout cures.
Remaining conventional position earth excavation：Excavation of foundation pit is to substrate；Excavation of foundation pit uses the side of hand fit's mechanical equivalent of light excavation
Formula is carried out, and sends special messenger to command machinery in digging process, forbids digging machine to produce collision or disturbance to interim column.
After the completion of excavation of foundation pit, accessory structure bottom plate of constructing, side wall of then constructing, applying for roof timbering template is then carried out
Work, colligation roof steel bar after formwork erection is complete, the galvanized steel plain sheet waterstop at Embedment Construction seam, casting concrete to designing Roof,
Required by crossbeam concrete reaches design after intensity, construction waterproofing paint and waterproofing protection layer concrete is poured, protective layer mixes
Solidifying soil is poured to water pipe bottom above 100mm.
Claims (3)
- It is 1. a kind of based on the major diameter running water pipe security protection construction method faced forever with reference to theory, it is characterised in that：Construction step It is rapid as follows：1）Row plus structure construction；Row plus structure are provided with some rows, and the row of each row adds structure to include being arranged on water pipe（6）Two The concrete baffle plate of side（9）, water pipe（6）Downside is supported by plain concrete（10）, described concrete baffle plate（9）And plain concrete （10）It is arranged on crossbeam（11）On, crossbeam（11）Downside is provided with some columns（13）, column（13）It is supported in concrete pipe base （14）On, described crossbeam（11）For the top plate of subway accessory structure, crossbeam（11）Pass through temporary support（12）It is placed in column （13）On；2）, earthwork unit excavate；3）, accessory structure top board construction；Row adds concretely comprising the following steps for structure construction,1. measure of pile position：Accurately measured using total powerstation before drilled pile construction, determine pile foundation（14）Position；2. exploratory trench excavates：Before Spiral digging machine drilling, exploratory trench is excavated to stake point position, verifies underground utilities and barrier, exploratory trench is set In stake point position, can single-point excavate, can also excavate integral trial trench；3. rig is installed：After rig is in place, leveling support, it is ensured that bit central and casing center are on a plumb line, with hole Centrical tolerance cannot be greater than 5cm, and gradient cannot be greater than 1%；4. bore operation：After spudding in, rig leveling is aligned and drilled, align stake position, confirm to start to creep into after hole position is errorless；5. column and fabrication of reinforcing cage：Carry out the making of steel reinforcement cage and column while drilled pile construction, live steel reinforcement cage and vertical After post machines, steel reinforcement cage and column are welded to connect,6. pile foundation concreting：After steel reinforcement cage and column decentralization, pile foundation concrete is poured.
- 2. it is according to claim 1 based on the major diameter running water pipe security protection construction method faced forever with reference to theory, its It is characterised by：Earthwork unit excavates to be excavated using step excavation method, and the method for realizing its process is as follows：The first step, hand excavation to running water pipe tip position, running water pipe ttom of pipe absolute altitude is calculated with this, specify ttom of pipe absolute altitude with The high relation of structure roof top mark, if a height of H1 of running water pipe top mark, then running water pipe ttom of pipe absolute altitude H2=H1-D, D is running water Pipe diameter, the absolute altitude H3 on structure roof top can be checked in design drawing, ttom of pipe and the distance on structure roof top are H2-H3；Second step, it is excavated to the running water pipe bottom of the 1st row's crossbeam corresponding position, the gradient 1：1, side slope is mixed using the injection of C20 microliths Solidifying soil is reinforced, and running water pipe bottom excavation line is 0.5m away from the 1st row's crossbeam edge；3rd step, excavate boundary line from the running water pipe bottom of the 1st row's crossbeam corresponding position and be excavated to accessory structure top plate downward vertically Bottom 5cm, if running water pipe has joint, to using steel plate anchor ear to reinforce at water pipe head；Subsequent construction ground mould and on column top Temporary support, colligation crossbeam reinforcing bar and concrete baffle plate reinforcing bar are set, crossbeam concrete is poured to Roof is designed, treats that crossbeam mixes Solidifying soil reaches required by design after intensity, construction waterproofing paint and pours waterproofing protection layer concrete, and cover concrete pours To water pipe bottom above 100mm；After crossbeam concrete and cover concrete have been constructed, the side shield concrete of water pipe two is poured, Backfilled at baffle position with plain concrete；4th step, after the 1st row's bent structure is constructed, repeat second and third above-mentioned step and complete the 2nd earthwork unit and the 2nd row The construction of bent structure, continue to repeat second and third above-mentioned step, progressively excavate and push ahead until all bent structures have been constructed Finish, advance distance centre-to-centre spacing between framed bent.
- 3. it is according to claim 2 based on the major diameter running water pipe security protection construction method faced forever with reference to theory, its It is characterised by：Accessory structure top board construction specific method is as follows：Construct first water pipe protection safety protection structure, after the completion of carry out surplus earth excavation, for different position using not Same earthwork digging method, earth excavation position is divided into water pipe and fender post intersection and remaining conventional position；The earth excavation of water pipe and fender post intersection：Using hand excavation, stage excavation, after the completion of this layer of earth excavation, bar planting is carried out immediately, bar planting is completed meeting native side, so Construct immediately afterwards lateral template, reinforcing bar colligation, and reserved Grouting Pipe are carried out after the completion of template construction immediately, after the completion of reinforcing bar colligation C35 early strength concretes are poured, after concrete strength reaches C25, carry out slip casting immediately, grouting pressure 0.2MPa, slip casting Purpose is the gap of the filling soil body, and next layer of earth excavation is carried out after grout cures, until being excavated to foundation ditch bottom；Remaining conventional position earth excavation：Excavation of foundation pit is to substrate；Excavation of foundation pit is entered by the way of hand fit's mechanical equivalent of light excavation OK, send special messenger to command machinery in digging process, forbid digging machine to produce collision or disturbance to interim column；After the completion of excavation of foundation pit, accessory structure bottom plate of constructing, side wall of then constructing, the construction of roof timbering template is then carried out, Colligation roof steel bar after formwork erection is complete, the galvanized steel plain sheet waterstop at Embedment Construction seam, casting concrete treat horizontal stroke to Roof is designed Beam concrete reaches required by design after intensity, construction waterproofing paint and pours waterproofing protection layer concrete, cover concrete Pour to water pipe bottom above 100mm.
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| CN107940102B (en) * | 2017-11-21 | 2023-05-26 | 上海建工四建集团有限公司 | Underground raw water pipeline protection construction method |
| CN109972666B (en) * | 2019-04-19 | 2020-12-11 | 中铁建大桥工程局集团第四工程有限公司 | Construction method for controlling disturbance of existing adjacent pipeline in excavation of subway foundation pit |
| CN110344440A (en) * | 2019-06-26 | 2019-10-18 | 深圳市勘察研究院有限公司 | A kind of method and structure using reinforced concrete supporting beam in-situ conservation pipeline |
| CN111021397B (en) * | 2019-12-31 | 2021-07-02 | 中铁三局集团有限公司 | Water intake pipeline fixing construction method |
| CN116398701B (en) * | 2023-04-23 | 2024-01-02 | 中铁十一局集团有限公司 | Improved large-diameter main water pipe traversing foundation pit protection structure and construction method thereof |
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| JP2004190780A (en) * | 2002-12-11 | 2004-07-08 | Jfe Koken Corp | Protection structure of underground buried pipe and execution method |
| JP2008121319A (en) * | 2006-11-14 | 2008-05-29 | Kinji Takeuchi | Underground pipe protective structure and constructing method |
| CN101205723A (en) * | 2006-12-20 | 2008-06-25 | 上海市第一建筑有限公司 | Construction method of underground building access in precondition of non-relocation of pipelines |
| CN103266622B (en) * | 2013-06-09 | 2015-10-14 | 中铁第四勘察设计院集团有限公司 | Great-leap-forward abnormity counterfort L-type wall-retaining structure |
| CN103321245B (en) * | 2013-06-18 | 2016-01-13 | 中铁十六局集团地铁工程有限公司 | The construction method of the protective device of underground utilities during a kind of shield driving |
| CN205100298U (en) * | 2015-10-16 | 2016-03-23 | 中铁三局集团有限公司 | Major diameter water pipe safety protection structure |
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