CN109653772A - A kind of shallow buried tube curtain support system and its construction method - Google Patents
A kind of shallow buried tube curtain support system and its construction method Download PDFInfo
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- CN109653772A CN109653772A CN201910108587.0A CN201910108587A CN109653772A CN 109653772 A CN109653772 A CN 109653772A CN 201910108587 A CN201910108587 A CN 201910108587A CN 109653772 A CN109653772 A CN 109653772A
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- 238000010276 construction Methods 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 166
- 239000010959 steel Substances 0.000 claims abstract description 166
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 239000011376 self-consolidating concrete Substances 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims abstract 2
- 239000002689 soil Substances 0.000 claims description 41
- 238000003466 welding Methods 0.000 claims description 12
- 239000004567 concrete Substances 0.000 claims description 9
- 238000007569 slipcasting Methods 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 6
- 230000003447 ipsilateral effect Effects 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 241000826860 Trapezium Species 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000011440 grout Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 4
- 238000012407 engineering method Methods 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 210000001364 upper extremity Anatomy 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The present invention provides a kind of shallow buried tube curtain support system and its construction method.The present invention includes: several first steel pipes, the second steel pipe and the bindiny mechanism being placed on each steel pipe that interval is laid, the bindiny mechanism includes top flange plate, bottom wing listrium, big floor, small floor, the fixed lock to match each other on top flange plate, the first steel pipe, the second steel pipe after the laying of interval are in n font, pass through the reinforcing of filling micro-expansion cement slurry and self-compacting concrete completion system.Earth's surface sedimentation can be effectively reduced using support system provided by the invention and construction method, guarantee the security reliability of superstructure, underground space utilization rate is high, and structure stress is more reasonable, and engineering method is simple with process, and economy is stronger.
Description
Technical field
The present invention relates to tunneling and underground engineering construction field more particularly to a kind of shallow buried tube curtain support system and its constructions
Method.
Background technique
As Urbanization in China is constantly accelerated, the continuous concentration of urban population builds subway, underground speedy way becomes
Alleviate one of the main path of traffic pressure in each big city.The shallow embedding that existing building, structures and municipal highway are worn under is big
In bore tunnel engineering, it can be very good to reduce ground settlement using pipe curtain construction method, guarantee the security reliability of superstructure,
It has a clear superiority.
But current pipe curtain support system has the following problems: (1) pipe curtain structure is completed to manage by pipe cutting
Between connect, destroy the globality of steel pipe, cause steel pipe rigidity and bearing capacity reduce；(2) due to steel pipe and concrete elastic
Modulus difference is larger, and concrete is peeling-off between outer wall of steel pipe and pipe under load action, and the rigidity of structure and bearing capacity weaken；
(3) concrete forms along two outer wall of steel pipe that are connected and penetrates through diagonal crack between load action down tube, leads to top agent on crack resistance of concrete between pipe
Performance is pressed to play poor, tensile connection component tensile property in middle and lower part plays poor between pipe, and resource utilization is lower；(4) it constructs
Live procedure of processing is more, and engineering method and complex procedures cause construction speed slow；(5) it connects not close between pipe, it is existing to there is infiltration
As；(6) for conventional tube curtain in jack-in process, soil layer is larger to tube fraction power, and jacking is more difficult；(7) conventional tube curtain is between pipe
Cause the top soil body to fall off during casting, leads to ground settlement.
Summary of the invention
According to technical problem set forth above, and provide a kind of shallow buried tube curtain support system and its construction method.
The technological means that the present invention uses is as follows:
A kind of shallow buried tube curtain support system, including being spaced several first steel pipes laid, the second steel pipe and being placed in each steel pipe
On bindiny mechanism, the bindiny mechanism of first steel pipe include the first top flange plate, the first bottom wing listrium, the first big floor,
First small floor, first top flange plate, the first bottom wing listrium are two pieces and are fixedly arranged on the two sides of the first steel pipe respectively, institute
It states the first big floor and the first small floor is fixedly arranged on respectively in the two sides of the first steel pipe, the first top flange plate and the first bottom wing listrium
Between position, the end of first top flange plate be installed with C-type steel lock；
The bindiny mechanism of second steel pipe includes the second top flange plate, the second bottom wing listrium, the second largest floor, second small
Floor, second top flange plate, the second bottom wing listrium are two pieces and are fixedly arranged on the two sides of the second steel pipe respectively, and described second
Big floor and the second small floor are fixedly arranged on the two sides of the second steel pipe, the second top flange plate and the second bottom wing listrium interposition respectively
It sets, the end of second top flange plate is installed with the T shape lock for matching and being slided in its groove with C-type steel lock, body
Each plate is each parallel to horizontal plane in system, and each first steel pipe, the top flange plate of the second steel pipe are concordant, and bottom wing listrium is also concordant, and first
Big floor and the second largest floor have difference in height；
The first steel pipe, the second steel pipe after the laying of interval are in n font, and the upper left corner and the upper right corner of n font are third steel pipe
With the 4th steel pipe, the third steel pipe, the 4th steel pipe are respectively the first steel pipe, the second steel pipe after being adaptively adjusted, connection
Two top flange plates, bottom wing listrium are at right angles arranged in mechanism, and big floor and small floor are set among top flange plate and bottom wing listrium
Position；
Injected hole is opened up on each steel pipe, during system is constructed, adjacent steel pipe will by passing through welding after lock connection
Adjacent bottom wing listrium fastening, interval, the interior preset filler of filling of pipe between lock gap, pipe.
Further, each steel pipe specification is identical, and diameter of steel tube is D, and steel pipe thickness is H, wherein each top flange plate,
Bottom wing listrium, big floor, small floor pass through welding manner and are fixed on corresponding steel pipe, and the plate thickness of same type is identical, all kinds of
Template thickness range is 0.8H~1.5H.
Further, symmetrically solid along the horizontal line for passing through steel pipe centroid with the ipsilateral top flange plate of steel pipe and bottom wing listrium
If vertical interval is distributed along steel pipe horizontal direction middle line, specific vertical interval is 0.65~0.85D.
Further, major floor is right-angled trapezium steel plate, wherein sharp angle is 30~60 degree, and every steel pipe is same
2 big floors are concordantly arranged in side, and longitudinal gap is 0.5~2D；First big floor and the first top flange plate distance for 0.08~
0.2D；The second largest floor and the second top flange plate distance are 0.08~0.15D；First big floor and the second largest floor vertical interval
Greater than 20cm or 0.02D；First big floor is equal with the second largest floor width, and it is 0.05 that width L, which meets longitudinal overlap part,
~0.2D.
Further, each small floor and steel pipe are isometric, end be acute angle, angle be 10~30 °, width be 3~
20cm is laid in top flange plate and big floor and big floor and bottom wing listrium middle position, wherein the first top flange plate and the
Small number of ribs between one big floor is 1, and the small number of ribs between the first big floor and the first bottom wing listrium is 2~4；The
Small number of ribs between two top flange plates and the second largest floor is 1, the riblet between the second largest floor and the second bottom wing listrium
Plate quantity is 3~5, and multiple small floors are distributed between big floor and bottom wing listrium.
Further, it is starched in lock filled with micro-expansion cement, be spaced between pipe and be filled with self-compacting concrete in managing,
At n shape structure leg, and its underpart Stabilizing Grout left and right to lowest part steel pipe forms the external reinforcement soil body.
Further, 4 injected holes are arranged in same slip casting plane, and injected hole corresponds to the center of circle and lateral connection angular separation point
Wei not be 0 °, 90 °, 180 °, 270 ° of positions, each injected hole aperture are 30~50mm.
The present invention also provides a kind of construction methods of New pipe curtain supporting construction, include the following steps:
S1, pipe curtain support system is designed according to engine request, determines steel pipe, upper and lower flange plate, lock, big floor and small
Size, quantity and the position of floor, steel pass through the assembling of welding completion steel pipe and respective members in plant area's machine-shaping；
S2, in construction location excavating shaft, counter force wall is set, operation platform is built；
S3, pipe jacking equipment is set up, horizontal directional drilling machine is installed, and complete pilot hole construction；
S4, the jacking construction that n shape structure the first steel pipe and the second steel pipe is successively carried out by sequence from top to bottom；First steel
Pipe replace with the second steel pipe and heads into, and when adjacent two steel pipes jacking, the latter's top flange plate passes through lock and the former top flange plate lock
It is connected；Slip casting drag reduction is carried out while jacking construction；
S5, after the completion of steel pipe jacking, slip casting is carried out to its left and right and lower part soil body and is added at this system lowest part stabilizer blade
Gu；
S6, after being reinforced to stabilizer blade surrounding soil, clear soil between being latched first, when between lock the soil body empty after inject it is micro-
Expansion cement slurry；Clear soil injects after the soil body empties between pipe from close between carrying out pipe after micro-expansion cement slurry reaches design strength
Real concrete；After the soil body empties in concrete reaches and carries out clear soil in pipe after design strength between pipe, manages, self-compaction coagulation is injected
Soil；
S7, with cavern excavation, successively carry out the welding between adjacent two steel pipes bottom wing listrium.
Further, clear soil between the lock, clear geotechnique makees using giant and cooperates suction sand in clear soil and pipe in pipe
Machine or horizontal screw drilling carry out.
The invention has the following advantages that
It wears under in the Shallow tunnel with large cross-section engineering of existing building, structures and municipal highway, is mentioned using the present invention
The support system and construction method of confession can effectively reduce earth's surface sedimentation, guarantee the security reliability of superstructure, underground space benefit
With rate height, structure stress is more reasonable, and engineering method is simple with process, and economy is stronger.Meanwhile before not destroying steel pipe integrality
It puts, pipe curtain respectively forms that member stress is more reasonable, has given full play to the performance of each composition component, has improved the cross of pipe curtain entirety
It to rigidity and bearing capacity, has effectively kept out the top soil body and has fallen off, prevented infiltration phenomenon, construction site procedure of processing is less, work
Method and process are simple, and jacking is easier to, and significantly improve construction efficiency and construction quality.The present invention can be in tunnel based on the above reasons
Road is widely popularized with underground engineering construction field.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is shallow buried tube curtain support system schematic diagram of the present invention.
Fig. 2 is each composition simple schematic diagram of member connection of the present invention.
Fig. 3 is the first steel pipe and associated joint members schematic diagram of the invention.
Fig. 4 is the second steel pipe and associated joint members schematic diagram of the invention.
Fig. 5 is the first steel pipe of the invention and the second steel pipe connection schematic diagram.
In figure: 1, the first steel pipe；2, the second steel pipe；3, the external reinforcement soil body；4, the first top flange plate；5, the first lower flange
Plate；6, the first big floor；7, the first small floor；8, C-type steel latches；9, the second top flange plate；10, the second bottom wing listrium；11,
Two big floors；12, the second small floor；13, T shape latches；14, injected hole；15, the self-compacting concrete filled in pipe；16, Guan Jian
It is spaced the self-compacting concrete of filling；17, the micro-expansion cement slurry filled in lock.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, the present invention provides a kind of shallow buried tube curtain support system, several first steel pipes including interval laying
1, the second steel pipe 2 and the bindiny mechanism being placed on each steel pipe, the bindiny mechanism of first steel pipe 1 include the first top flange plate 4,
First bottom wing listrium 5, the first big floor 6, the first small floor 7, first top flange plate 4, the first bottom wing listrium 5 are two pieces
And it is fixedly arranged on the two sides of the first steel pipe 1 respectively, the first big floor 6 and the first small floor 7 are fixedly arranged on the first steel pipe 1 respectively
5 middle position of two sides, the first top flange plate 4 and the first bottom wing listrium, the end of first top flange plate 4 are installed with C-type steel
Lock 8；Wherein, big floor plays the role of transmitting pressure, and small floor, which rises, to be prevented to generate along tube wall diagonal crack.
The bindiny mechanism of second steel pipe 2 include the second top flange plate 9, the second bottom wing listrium 10, the second largest floor 11,
Second small floor 12, second top flange plate 9, the second bottom wing listrium 10 are two pieces and are fixedly arranged on the second steel pipe 2 respectively
Two sides, the second largest floor 11 and the second small floor 12 be fixedly arranged on respectively the two sides of the second steel pipe 2, the second top flange plate 9 with
Second bottom wing listrium, 10 middle position, the end of second top flange plate 9 is installed with to be matched and can be at it with C-type steel lock 8
The T shape slided in groove latches 13, and each plate is each parallel to horizontal plane, the top flange of each first steel pipe 1, the second steel pipe 2 in system
Plate is concordant, and bottom wing listrium is also concordant, and the first big floor 6 has difference in height with the second largest floor 11；
In the present embodiment, C-type steel lock is the C-type steel material being installed on top flange plate, and T shape lock is to be installed in top flange
Vertical steel plate on plate, vertical steel plate combine at T-shaped with top flange plate.
The first steel pipe 1, the second steel pipe 2 after the laying of interval are in n font, and the upper left corner and the upper right corner of n font are third steel
Pipe and the 4th steel pipe, the third steel pipe, the 4th steel pipe are respectively the first steel pipe 1, the second steel pipe 2 after being adaptively adjusted,
Two top flange plates, bottom wing listrium are at right angles arranged in bindiny mechanism, and big floor and small floor are set to top flange plate and bottom wing listrium
Middle position；
Specifically, the bindiny mechanism of the third steel pipe includes third top flange plate, third bottom wing listrium, the third-largest rib
The small floor of plate, third, the third top flange plate, third bottom wing listrium are two pieces, two top flange plates in bindiny mechanism, under
Flange plate is at right angles arranged, wherein the small floor of the third-largest floor, third is set among third top flange plate and third bottom wing listrium
Position, the centre point institute of the centre point of top flange plate pipe cutting gained major arc and its bottom wing listrium pipe cutting gained minor arc
Steel pipe centroid is being passed straight through, and is being in line and divides the major arc, minor arc equally, it is adjacent that one of top flange plate is equipped with matching
The T shape lock 13 or C-type steel lock 8 of C-type steel lock 8 or T shape lock 13 on steel pipe.4th steel pipe and the outer cloth of third steel pipe
Construction is symmetrical.
The third top flange plate, third bottom wing listrium are two pieces and are fixedly arranged on the two sides of the first steel pipe 1 respectively, described
First big floor 6 and the first small floor 7 are fixedly arranged on the two sides of the first steel pipe 1, the first top flange plate 4 and the first bottom wing listrium respectively
5 middle positions, the end of first top flange plate 4 are installed with C-type steel lock 8；
Injected hole 14 is opened up on each steel pipe, during system is constructed, adjacent steel pipe is by passing through welding after lock connection
Adjacent bottom wing listrium is fastened, interval, the interior preset filler of filling of pipe between lock gap, pipe.
Each steel pipe specification is identical, and diameter of steel tube is D, and steel pipe thickness is H, wherein each top flange plate, bottom wing listrium,
Big floor, small floor pass through welding manner and are fixed on corresponding steel pipe, as preferred embodiment, the plate thickness of same type
Identical, all types of plate thickness ranges are 0.8H~1.5H.
It is symmetrically fixed along the horizontal line for passing through steel pipe centroid with bottom wing listrium with the ipsilateral top flange plate of steel pipe, between vertical
Away from being distributed along steel pipe horizontal direction middle line, as preferred embodiment, specific vertical interval is 0.65~0.85D.
Major floor is right-angled trapezium steel plate, wherein and as preferred embodiment, sharp angle is 30~60 degree,
Every steel pipe 2 big floors of ipsilateral concordant setting, longitudinal gap are 0.5~2D；First big floor 6 and the first top flange plate 4
Distance is 0.08~0.2D；The second largest floor 11 and the second top flange plate 9 are apart from for 0.08~0.15D；First big floor 6 and
Two big 11 vertical intervals of floor are greater than 20cm or 0.02D；First big floor 6 is equal with second largest 11 width of floor, and width L is full
Sufficient longitudinal overlap part is 0.05~0.2D.In the present embodiment, the longitudinal direction refers to the length direction along pipeline, namely axial.
Each small floor and steel pipe are isometric, and end is acute angle, and as preferred embodiment, angle is 10~30 °, wide
Degree is 3~20cm, is laid in top flange plate and big floor and big floor and bottom wing listrium middle position, wherein the first upper limb
Small number of ribs between listrium 4 and the first big floor 6 is 1, the small floor between the first big floor 6 and the first bottom wing listrium 5
Quantity is 2~4；Small number of ribs between second top flange plate 9 and the second largest floor 11 is 1, the second largest floor 11 and second
Small number of ribs between bottom wing listrium 10 is 3~5, and multiple small floors are distributed between big floor and bottom wing listrium.
17 are starched filled with micro-expansion cement in lock, 16 are spaced between pipe in pipe 15 filled with self-compacting concrete, in n shape
At structure leg, and its underpart Stabilizing Grout left and right to lowest part steel pipe forms the external reinforcement soil body 3.
As preferred embodiment, same slip casting plane also sets up 4 injected holes 14, the corresponding center of circle of injected hole 14 and cross
It is respectively 0 ° to connection angular separation, 90 °, 180 °, 270 ° of positions, each 14 aperture of injected hole are 30~50mm, difference on steel pipe
Plane opens up the similar injected hole 14 of multiple groups.
The present invention also provides a kind of construction methods of shallow buried tube curtain supporting construction, include the following steps:
S1, pipe curtain support system is designed according to engine request, determines steel pipe, upper and lower flange plate, lock, big floor and small
Size, quantity and the position of floor, steel pass through the assembling of welding completion steel pipe and respective members in plant area's machine-shaping；
S2, in construction location excavating shaft, counter force wall is set, operation platform is built；
S3, pipe jacking equipment is set up, horizontal directional drilling machine is installed, and complete pilot hole construction；
S4, the jacking construction that n shape structure the first steel pipe 1 and the second steel pipe 2 are successively carried out by sequence from top to bottom；First
Steel pipe 1 replaces with the second steel pipe 2 to be headed into, and when adjacent two steel pipes jacking, the latter's top flange plate passes through lock and the former top flange plate
Lock is connected；Slip casting drag reduction is carried out while jacking construction；
S5, after the completion of steel pipe jacking, slip casting is carried out to its left and right and lower part soil body and is added at this system lowest part stabilizer blade
Gu；
S6, after being reinforced to stabilizer blade surrounding soil, clear soil between being latched first, when between lock the soil body empty after inject it is micro-
Expansion cement slurry；Clear soil injects after the soil body empties between pipe from close between carrying out pipe after micro-expansion cement slurry reaches design strength
Real concrete；After the soil body empties in concrete 16 reaches and carries out clear soil in pipe after design strength between pipe, manages, injection self-compaction is mixed
Solidifying soil 15；
Wherein, it after the soil body and the interior soil body of pipe empty between pipe, in practical projects, is generally set in steel tube end part and gap end
There is plugging plate, open up air hole on the plugging plate, to form mud jacking space.
S7, with cavern excavation, successively carry out the welding between adjacent two steel pipes bottom wing listrium.
As preferred embodiment, clear soil between the lock, clear geotechnique makees to use giant in clear soil and pipe in pipe
And sand sucker or horizontal screw drilling is cooperated to carry out.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (9)
1. a kind of shallow buried tube curtain support system, which is characterized in that including being spaced several first steel pipes laid, the second steel pipe and setting
Bindiny mechanism on each steel pipe, the bindiny mechanism of first steel pipe include the first top flange plate, the first bottom wing listrium, first
Big floor, the first small floor, first top flange plate, the first bottom wing listrium are two pieces and are fixedly arranged on the first steel pipe respectively
Two sides, the first big floor and the first small floor are fixedly arranged on respectively under the two sides of the first steel pipe, the first top flange plate and first
Flange plate middle position, the end of first top flange plate are installed with C-type steel lock；
The bindiny mechanism of second steel pipe includes the second top flange plate, the second bottom wing listrium, the second largest floor, the second riblet
Plate, second top flange plate, the second bottom wing listrium are two pieces and are fixedly arranged on the two sides of the second steel pipe respectively, described second largest
Floor and the second small floor are fixedly arranged on the two sides of the second steel pipe, the second top flange plate and the second bottom wing listrium middle position respectively,
The end of second top flange plate is installed with the T shape lock for match and being slided in its groove with C-type steel lock, in system
Each plate is each parallel to horizontal plane, and each first steel pipe, the top flange plate of the second steel pipe are concordant, and bottom wing listrium is also concordant, the first big rib
Plate and the second largest floor have difference in height；
Interval lay after the first steel pipe, the second steel pipe be in n font, the upper left corner and the upper right corner of n font are third steel pipe and the
Four steel pipes, the third steel pipe, the 4th steel pipe are respectively the first steel pipe, the second steel pipe after being adaptively adjusted, bindiny mechanism
In two top flange plates, bottom wing listrium at right angles arrange, big floor and small floor are set to top flange plate and bottom wing listrium middle position；
Injected hole is opened up on each steel pipe, during system is constructed, adjacent steel pipe will be adjacent by passing through welding after lock connection
The fastening of bottom wing listrium, lock gap, interval between pipe, the preset filler of filling in pipe.
2. shallow buried tube curtain support system according to claim 1, which is characterized in that each steel pipe specification is identical, diameter of steel tube
It is D, steel pipe thickness is H, wherein each top flange plate, bottom wing listrium, big floor, that small floor passes through welding manner is affixed
On corresponding steel pipe, the plate thickness of same type is identical, and all types of plate thickness ranges are 0.8H~1.5H.
3. shallow buried tube curtain support system according to claim 1 or 2, which is characterized in that with the top flange plate that steel pipe is ipsilateral
Symmetrically fixed along the horizontal line for passing through steel pipe centroid with bottom wing listrium, vertical interval is distributed along steel pipe horizontal direction middle line, tool
Body vertical interval is 0.65~0.85D.
4. shallow buried tube curtain support system according to claim 1 or 2, which is characterized in that major floor is right-angled trapezium
Steel plate, wherein sharp angle is 30~60 degree, every steel pipe 2 big floors of ipsilateral concordant setting, longitudinal gap for 0.5~
2D；First big floor and the first top flange plate distance are 0.08~0.2D；The second largest floor is with the second top flange plate distance
0.08~0.15D；First big floor and the second largest floor vertical interval are greater than 20cm or 0.02D；First big floor with it is second largest
Floor width is equal, and it is 0.05~0.2D that width L, which meets longitudinal overlap part,.
5. shallow buried tube curtain support system according to claim 4, which is characterized in that each small floor and steel pipe are isometric, end
Portion is acute angle, and angle is 10~30 °, and width is 3~20cm, is laid in top flange plate and big floor and big floor and bottom wing
Listrium middle position, wherein small number of ribs between the first top flange plate and the first big floor is 1, the first big floor and the
Once the small number of ribs between flange plate is 2~4；Small number of ribs between second top flange plate and the second largest floor is 1,
Small number of ribs between the second largest floor and the second bottom wing listrium is 3~5, and multiple small floors are distributed in big floor and lower flange
Between plate.
6. shallow buried tube curtain support system according to claim 1, which is characterized in that be filled with micro-expansion cement in lock
It starches, is spaced between pipe and pipe is interior filled with self-compacting concrete, at n shape structure leg, and its underpart left and right to lowest part steel pipe
Stabilizing Grout forms the external reinforcement soil body.
7. shallow buried tube curtain support system according to claim 1 or 6, which is characterized in that 4 notes are arranged in same slip casting plane
Hole is starched, it is respectively 0 ° that injected hole, which corresponds to the center of circle and lateral connection angular separation, 90 °, 180 °, 270 ° of positions, each injected hole aperture
For 30~50mm.
8. a kind of construction method of shallow buried tube curtain supporting construction, includes the following steps:
S1, pipe curtain support system is designed according to engine request, determines steel pipe, upper and lower flange plate, lock, big floor and small floor
Size, quantity and position, steel in plant area's machine-shaping, and by welding complete steel pipe and respective members assembling；
S2, in construction location excavating shaft, counter force wall is set, operation platform is built；
S3, pipe jacking equipment is set up, horizontal directional drilling machine is installed, and complete pilot hole construction；
S4, the jacking construction that n shape structure the first steel pipe and the second steel pipe is successively carried out by sequence from top to bottom；First steel pipe with
Second steel pipe alternately heads into, and when adjacent two steel pipes jacking, the latter's top flange plate, which is latched by lock with the former top flange plate, to be connected；
Slip casting drag reduction is carried out while jacking construction；
S5, after the completion of steel pipe jacking, grouting and reinforcing is carried out to its left and right and lower part soil body at this system lowest part stabilizer blade；
S6, after being reinforced to stabilizer blade surrounding soil, clear soil between being latched first, when between lock the soil body empty after inject microdilatancy
Cement slurry；It is mixed to inject self-compaction after the soil body empties between pipe for clear soil between carrying out pipe after micro-expansion cement slurry reaches design strength
Solidifying soil；After the soil body empties in concrete reaches and carries out clear soil in pipe after design strength between pipe, manages, self-compacting concrete is injected；
S7, with cavern excavation, successively carry out the welding between adjacent two steel pipes bottom wing listrium.
9. the construction method of shallow buried tube curtain supporting construction according to claim 8, which is characterized in that clear between the lock
Clear geotechnique's work using giant and cooperates sand sucker or horizontal screw drilling to carry out in clear native and pipe in soil, pipe.
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| CN110410091A (en) * | 2019-07-29 | 2019-11-05 | 东北大学 | A kind of New pipe curtain structure being laid with underground utilities and its construction method |
| CN110952993A (en) * | 2019-11-19 | 2020-04-03 | 东北大学 | Semi-assembly type pipe curtain structure based on steel reinforced concrete connection and construction process |
| CN111305093A (en) * | 2020-03-03 | 2020-06-19 | 西南交通大学 | Self-unloading steel corrugated plate arch culvert |
| CN111485549A (en) * | 2020-04-30 | 2020-08-04 | 广西路建工程集团有限公司 | Rotary drilling and buried drilling treatment method |
| CN111577338A (en) * | 2020-04-28 | 2020-08-25 | 广东省基础工程集团有限公司 | Tunnel auxiliary supporting structure and construction method |
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| CN109653772B (en) | 2020-07-21 |
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