CN220890192U - Construction structure of complex water-rich stratum shield receiving foam concrete box - Google Patents
Construction structure of complex water-rich stratum shield receiving foam concrete box Download PDFInfo
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- CN220890192U CN220890192U CN202321413207.2U CN202321413207U CN220890192U CN 220890192 U CN220890192 U CN 220890192U CN 202321413207 U CN202321413207 U CN 202321413207U CN 220890192 U CN220890192 U CN 220890192U
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- steel
- box body
- shield receiving
- foam concrete
- side wall
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- 239000011381 foam concrete Substances 0.000 title claims abstract description 62
- 238000010276 construction Methods 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 206
- 239000010959 steel Substances 0.000 claims abstract description 206
- 238000004873 anchoring Methods 0.000 claims abstract description 29
- 238000006073 displacement reaction Methods 0.000 claims abstract description 11
- 238000007493 shaping process Methods 0.000 claims description 33
- 238000009415 formwork Methods 0.000 claims description 24
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000008014 freezing Effects 0.000 description 8
- 238000007710 freezing Methods 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 7
- 239000002689 soil Substances 0.000 description 6
- 238000005266 casting Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Abstract
The utility model relates to a construction structure of a complex water-rich stratum shield receiving foam concrete box body, which comprises a shield receiving side wall, a shield tunnel, a profile steel box body, a shield receiving bottom plate, foam concrete backfill, a side wall and a displacement monitor, wherein the shield receiving bottom plate is provided with a bottom anchoring steel plate, the side wall is provided with a vertical anchoring steel plate, the profile steel box body is anchored through the bottom anchoring steel plate and the vertical anchoring steel plate, the profile steel box body is filled with foam concrete backfill, the profile steel box body is supported through a support body, the profile steel box body is provided with a double-spliced profile steel column, a horizontal profile steel beam and a steel panel, and the outer side of the profile steel box body is provided with the displacement monitor for displacement monitoring; the utility model belongs to the field of civil engineering, and relates to a construction method for a complex water-rich stratum shield receiving foam concrete box body, which effectively reduces engineering cost, accelerates construction speed and can obtain better technical and economic benefits when applied to actual engineering.
Description
Technical Field
The utility model relates to a construction structure of a complex water-rich stratum shield receiving foam concrete box body, belongs to the field of civil engineering, and is suitable for construction of the complex water-rich stratum shield receiving foam concrete box body.
Background
Along with the continuous increase of the economy in China, the process of urban treatment is further accelerated, but the traffic jam becomes an important factor for restricting the urban development. The main departments of all large cities actively think about the thought of solving urban congestion, and subways have the advantages of large traffic volume, high speed, on-time, no occupation of ground space and the like and are widely adopted. The shield construction method is a main form of subway section tunnel construction, the shield enters the final receiving stage after the shield finishes the starting and normal digging stages, the risk of shield receiving construction is multiple-sided, once the risk occurs, the light weight can cause hundreds of thousands to millions of economic losses, and the heavy weight can cause important casualties and huge economic losses.
With the continuous and rapid development of the economy in China, the situation that urban rail transit lines pass through a luxury area is gradually increased. In a deep-buried water-rich stratum, the conventional shield end reinforcing and water stopping method is difficult to achieve the expected effect, and can easily cause water and sand burst accidents at the tunnel entrance, and secondary risk events can be caused.
Disclosure of Invention
The utility model aims to provide a construction structure of a complex water-rich stratum shield receiving foam concrete box body, which aims at the problem of construction of the complex water-rich stratum shield receiving foam concrete box body, and meets the requirements of structural construction.
In order to achieve the technical purpose, the utility model adopts the following technical scheme:
The construction structure of the complex water-rich stratum shield receiving foam concrete box body comprises a main body part, a steel box body and a shaping formwork system, wherein the main body part comprises a shield receiving side wall, a shield receiving bottom plate and an upturning structural beam; the profile steel box body comprises a steel panel, wherein the steel panel is arranged on the shield receiving bottom plate, one end of the steel panel is connected with the shield receiving side wall, the other end of the steel panel is connected with the side wall, and the steel panel, the side wall, the shield receiving side wall and the shield receiving bottom plate jointly enclose a pouring area; the upturning structural beam is positioned at one side of the profile steel box body, a supporting body is arranged between the upturning structural beam and the outer side of the profile steel box body, and a displacement monitor is arranged at the outer side of the profile steel box body;
the shaping formwork system is used for constructing tunnel portal on the shield receiving side wall.
Preferably, the steel box body further comprises double-spliced steel columns and horizontal steel beams, wherein the double-spliced steel columns are arranged on the outer sides of the steel panels, the double-spliced steel columns are vertically arranged, and the horizontal steel beams are arranged between the adjacent double-spliced steel columns; the steel panel is reinforced by the double-spliced steel columns and the horizontal steel beams.
Preferably, a vertical anchoring steel plate is arranged on the side wall, and a supporting body is arranged between the upturned structural beam and the outer side of the profile steel box body.
Preferably, the shaping formwork system comprises a round steel plate, a steel pipe, square timber and a shaping steel formwork, wherein the round steel plate is positioned at the center of the shaping formwork system, a steel pipe joint is arranged on the round steel plate, one end of the steel pipe is connected with the steel pipe joint, an adjustable jacking is arranged at the other end of the steel pipe, and the square timber is connected with the adjustable jacking; the shaping steel template is annular, and is fixed on the square timber.
Preferably, the finalized formwork system further comprises a reinforcing annular plate, wherein the reinforcing annular plate is arranged on the steel pipe and used for reinforcing the steel pipe.
The utility model has the following characteristics and beneficial effects:
(1) The shield receiving is carried out by adopting a foam concrete and steel box combined structure, so that the shield receiving construction safety and the construction efficiency are improved;
(2) Adopting a foam concrete layering recharging technology to carry out foam concrete filling construction, and improving the foam concrete filling construction quality;
(3) And the shaping formwork system is adopted to carry out the installation and construction of the tunnel portal formwork, so that the construction quality and the construction efficiency of the tunnel portal are improved.
Drawings
FIG. 1 is a block diagram of a complex water-rich formation shield receiving foam concrete box;
FIG. 2 is a cross-sectional view of a complex water-rich stratum shield receiving foam concrete box structure;
FIG. 3 is a sectional view of a door breaker;
FIG. 4 is a block diagram of a layered casting of foam concrete;
FIG. 5 is a schematic diagram of a portal sizing formwork architecture;
FIG. 6 is a cross-sectional view of a portal sizing formwork system.
In the figure: 1, shield tunneling; 2, shield receiving side walls; 3, foam concrete backfill body; 4, shield receiving bottom plate; 5, side walls; 6, vertically anchoring the steel plate; 7, anchoring a steel plate on the bottom surface; 8, a section steel box body; 9, double-spliced steel columns; 10, horizontal steel beams; 11, steel panel; 12, a support; 13, turning up the structural beam; 14, a displacement monitor; 15, horizontal grouting holes; 16, horizontally freezing the hole; 17, a tunnel portal; 18, anchoring the steel bars; 19, top anchoring steel plate; 20, a main body structure; 21, chiseling pile foundation; 22, covering the wall; 23, pile foundation; 24, glass fiber ribs; 25, firstly foaming the concrete casting body; 26, secondary foam concrete casting; 27, three times of foam concrete pouring; 28, shield segments; 29, shaping the steel template; 30, an adjustable jacking; 31, square lumber; 32, steel pipe joints; 33, a steel pipe; 34, tunnel portal; 35, reinforcing the ring plate; 36, circular steel plate; 37, shaping a formwork system; 38, shield grouting reinforcement; 39, portal rebar.
Detailed Description
The construction technical requirements such as detailed structural treatment in the embodiments of the present utility model are not repeated, and the embodiments of the present utility model are mainly described, and the present utility model is further described in detail by way of examples with reference to the accompanying drawings, and the description is not limited to the following examples.
Fig. 1 is a structural diagram of a complex water-rich stratum shield receiving foam concrete box body, fig. 2 is a sectional view of the complex water-rich stratum shield receiving foam concrete box body, fig. 3 is a structural diagram of a tunnel portal split-breaking structure, fig. 4 is a structural diagram of foam concrete layered pouring, fig. 5 is a structural diagram of a tunnel portal shaping formwork system, and fig. 6 is a sectional view of the tunnel portal shaping formwork system.
The structure diagram of the complex water-rich stratum shield receiving foam concrete box body shown in fig. 1 comprises a main body part 20, a shield tunnel 1, a steel box body 8, a shield receiving bottom plate 4, a foam concrete backfill body 3, a side wall 5 and a displacement monitor 14, wherein the main body part 20 comprises a shield receiving side wall 2, the side wall 5, the shield receiving bottom plate 4 and an upturned structure beam 13, the shield receiving bottom plate 4 is positioned at the bottom of the main body part 20, and the side wall 5 and the shield receiving side wall 2 are arranged on the shield receiving bottom plate 4. To the construction of complicated rich water stratum shield receiving foam concrete box, shield receiving bottom plate 4 sets up bottom surface anchor steel sheet 7, and side wall 5 sets up vertical anchor steel sheet 6, anchors steel box 8 through bottom surface anchor steel sheet 7 and vertical anchor steel sheet 6, and inside filling foam concrete of steel box 8 backfills 3, supports steel box 8 through supporter 12. The profile steel box body 8 comprises a double-spliced steel column 9, a horizontal steel beam 10 and a steel panel 11, wherein the steel panel 11 is arranged on the shield receiving bottom plate 4, and the steel panel 11, the side wall 5, the shield receiving side wall 2 and the shield receiving bottom plate 4 jointly enclose a pouring area. The double-spliced steel columns 9 are arranged on the outer sides of the steel panels 11, the double-spliced steel columns 9 are vertically arranged, and horizontal steel beams 10 are arranged between adjacent double-spliced steel columns 9; the steel panel 11 is reinforced by the double-spliced steel columns 9 and the horizontal steel beams 10. The upturning structural beam 13 is positioned at one side of the profile steel box body 8, and a supporting body 12 is arranged between the upturning structural beam 13 and the outer side of the profile steel box body 8. The vertical anchoring steel plate 6 is arranged between the side wall 5 and the profile steel box body 8. A supporting body 12 is arranged between the upturning structural beam 13 and the outer side of the steel box body 8.
The displacement monitor 14 is arranged on the outer side of the profile steel box body 8 and is used for monitoring displacement, and the displacement monitor 14 is arranged at the bottom of the profile steel box body 8.
The complex water-rich stratum shield receiving foam concrete box structure section view shown in fig. 2, the bottom and the top of the steel box 8 are anchored by a bottom anchoring steel plate 7 and a top anchoring steel plate 19 respectively. Wherein, be equipped with anchor reinforcing bar 18 on bottom surface anchor steel sheet 7 and the top anchor steel sheet 19 respectively, bottom surface anchor steel sheet 7 and top anchor steel sheet 19 anchor with main structure 20 through anchor reinforcing bar 18.
The tunnel portal 17 is internally provided with a horizontal grouting hole 15 and a horizontal freezing hole 16 for reinforcing soil. The tunnel portal 17 is a projection area of the shield tunnel 1 on the shield receiving side wall 2, the horizontal grouting holes 15 and the horizontal freezing holes 16 penetrate through the shield receiving side wall 2 and are driven into soil on one side of the shield receiving side wall 2, grouting reinforcement is carried out on the soil through the horizontal grouting holes 15, and freezing reinforcement is carried out on the soil through the horizontal freezing holes 16.
As shown in the structure diagram of the split breaking of the tunnel portal shown in fig. 3, the shield receiving tunnel portal adopts split breaking construction, the cover wall 22 on the side of the shield receiving side wall 2 is firstly chiseled, and then the pile foundation 21 to be chiseled on the pile foundation 23 on the side of the shield receiving side wall is chiseled. Wherein, the pile foundation 23 is provided with glass fiber ribs 24 for reinforcement.
As shown in fig. 4, the foam concrete layered pouring structure diagram is that foam concrete backfill construction is carried out in a pouring area surrounded by a steel panel 11, a side wall 5, a shield receiving side wall 2 and a shield receiving bottom plate 4, the foam concrete backfill adopts layered recharging construction, the foam concrete backfill construction is carried out by adopting three layers of primary foam concrete pouring, secondary foam concrete pouring and tertiary foam concrete pouring, and a foam concrete backfill body 3 is formed, wherein the foam concrete backfill body 3 consists of a primary foam concrete pouring body 25, a secondary foam concrete pouring body 26 and a tertiary foam concrete pouring body 37.
As shown in fig. 5-6, after the tunnel portal 17 is penetrated through by the shield machine, the tunnel portal 34 is constructed on the shield receiving side wall 2 by adopting a shaping formwork system 37, the shaping formwork system 37 comprises a round steel plate 36, a steel pipe 33, square timber 31, a shaping steel formwork 29 and a reinforcing annular plate 35, the round steel plate 36 is positioned at the center of the shaping formwork system 37, a steel pipe joint 32 is arranged on the round steel plate 36 and used for connecting one end of the steel pipe 33 and positioning the steel pipe 33, and the steel pipe joint 32 is uniformly arranged in the circumferential direction of the round steel plate 36. The steel pipe 33 is arranged along the radial direction of the tunnel portal 17, one end of the steel pipe 33 is connected with the steel pipe joint 32, the other end of the steel pipe 33 is provided with the adjustable jacking 30, the square timber 31 is connected with the adjustable jacking 30, and the square timber 31 is supported by the adjustable jacking 30; the shaping steel template 29 is in a ring shape, and the shaping steel template 29 is fixed on the square timber 31. The shield segment 28 and the shield grouting reinforcement 38 are paved at the tunnel portal 17, and the shield grouting reinforcement 38 is positioned outside the shield segment 28. The shaping steel template 29 contacts with one side of the shield receiving side wall 2 and the inner wall of the shield segment 28, an annular grouting space is formed between the shaping steel template 29 and the inner wall of the tunnel portal 17, concrete pouring is carried out in the grouting space, a tunnel portal 34 is formed, the tunnel portal 34 is annular, and portal steel bars 39 are arranged in the tunnel portal 34. The reinforcing ring plate 35 is provided on the steel pipe 33 for reinforcing the steel pipe 33.
The adjustable jacking 30 comprises a screw and a supporting plate arranged at one end of the screw, a threaded hole matched with the screw is formed in the end part of the steel pipe 33, the screw is in threaded connection with the threaded hole, and the supporting plate is in contact with the square timber 31; the screw rod is moved along the axial direction of the steel pipe by rotating the screw rod, so that the jacking force of the square timber is adjusted.
The construction method of the complex water-rich stratum shield receiving foam concrete box body comprises the following specific steps:
Step one, horizontal grouting hole construction: a horizontal grouting hole 15 is drilled in a tunnel portal 17, and grouting reinforcement treatment is carried out on soil body through the horizontal grouting hole 15;
Step two, horizontal freezing hole construction: a horizontal freezing hole 16 is drilled in a tunnel portal 17, and soil is frozen and reinforced through the horizontal freezing hole 16;
Step three, mounting a section steel box body: assembling the steel box body 8, and anchoring the steel box body 8 through the bottom anchoring steel plate 7, the top anchoring steel plate 19 and the vertical anchoring steel plate 6;
When the steel box body 8 is assembled, a steel panel 11 is firstly installed on the shield receiving bottom plate 4, one end of the steel panel 11 is connected with the shield receiving side wall 2, and the other end of the steel panel 11 is connected with the side wall 5; a bottom anchoring steel plate 7 and a top anchoring steel plate 19 are respectively arranged at the bottom and the top of the steel panel 11, anchoring steel bars 18 are respectively arranged on the bottom anchoring steel plate 7 and the top anchoring steel plate 19, and the bottom anchoring steel plate 7 and the top anchoring steel plate 19 are anchored with a main body structure 20 through the anchoring steel bars 18 on the bottom anchoring steel plate 7 and the top anchoring steel plate 19;
The outer side of the steel panel 11 is provided with double-spliced steel columns 9, the double-spliced steel columns 9 are vertically arranged, a horizontal steel beam 10 is arranged between adjacent double-spliced steel columns 9, and the steel panel 11 is reinforced through the double-spliced steel columns 9 and the horizontal steel beam 10; a supporting body 12 is arranged between the upturning structural beam 13 and the steel box body 8; a vertical anchoring steel plate 6 is arranged on the side wall 5, and a supporting body 12 is arranged between the vertical anchoring steel plate 6 and the outer side of the profile steel box body 8; a displacement monitor 14 is arranged outside the profile steel box body 8;
Step four, breaking the tunnel portal: the shield receiving hole is constructed by adopting the multiple breaking, firstly chiseling the cover wall 22 on the shield receiving side wall 2, and then chiseling the pile foundation 21 to be chiseled on the pile foundation 23 on one side of the shield receiving side wall 2;
Fifthly, filling foam concrete: performing foam concrete backfilling construction in a pouring area surrounded by the steel panel 11, the side wall 5, the shield receiving side wall 2 and the shield receiving bottom plate 4; the foam concrete backfilling is constructed by adopting layered recharging, and the foam concrete backfilling construction is carried out by adopting a first foam concrete pouring layer, a second foam concrete pouring layer and a third foam concrete pouring layer to form a foam concrete backfilling body 3, wherein the foam concrete backfilling body 3 consists of a first foam concrete pouring body 25, a second foam concrete pouring body 26 and a third foam concrete pouring body 37;
Step six, shield receiving: the shield machine is jacked into the foam concrete backfill body 3 and shield receiving is carried out;
Step seven, dismantling the foam concrete backfill body 3 and the steel box body 8: breaking foam concrete around the shield machine, and dismantling the steel box body 8;
Eighth step, construction of a tunnel portal: constructing a tunnel portal 34 by adopting a shaping formwork system 37, arranging a round steel plate 36 in the shaping formwork system 37, arranging a steel pipe joint 32 on the round steel plate 36, connecting one end of a steel pipe 33 with the steel pipe joint 32, arranging an adjustable jacking 30 at the other end of the steel pipe 33, and arranging square timber 31 on the adjustable jacking 30; the steel pipe 33 is reinforced by providing a reinforcing ring plate 35 on the steel pipe 33; the method comprises the steps of installing a shaping steel template 29 on a square timber 31, adjusting the positions of the square timber 31 and the shaping steel template 29 through an adjustable jacking 30, enabling the shaping steel template 29 to be in contact with one side of a shield receiving side wall 2 and the inner wall of a shield segment 28, forming an annular grouting space between the shaping steel template 29 and the inner wall of a tunnel portal 17, and performing concrete pouring in the grouting space to form a tunnel portal 34.
Claims (5)
1. The construction structure of the complex water-rich stratum shield receiving foam concrete box body is characterized by comprising a main body part (20), a profile steel box body (8) and a shaping formwork system (37), wherein the main body part (20) comprises a shield receiving side wall (2), a side wall (5), a shield receiving bottom plate (4) and an upturning structural beam (13); the profile steel box body (8) comprises a steel panel (11), wherein the steel panel (11) is arranged on the shield receiving bottom plate (4), one end of the steel panel (11) is connected with the shield receiving side wall (2), the other end of the steel panel (11) is connected with the side wall (5), and the steel panel (11), the side wall (5), the shield receiving side wall (2) and the shield receiving bottom plate (4) jointly enclose a pouring area; the upturning structural beam (13) is positioned at one side of the steel box body (8), a supporting body (12) is arranged between the upturning structural beam (13) and the outer side of the steel box body (8), and a displacement monitor (14) is arranged at the outer side of the steel box body (8);
The shaping formwork system (37) is used for constructing a tunnel portal (34) on the shield receiving side wall (2).
2. The construction structure of the complex water-rich stratum shield receiving foam concrete box body according to claim 1, wherein the steel box body (8) further comprises double-spliced steel columns (9) and horizontal steel beams (10), the double-spliced steel columns (9) are arranged on the outer sides of the steel panels (11), the double-spliced steel columns (9) are vertically arranged, and the horizontal steel beams (10) are arranged between the adjacent double-spliced steel columns (9); the steel panel (11) is reinforced by the double-spliced steel columns (9) and the horizontal steel beams (10).
3. The construction structure of the complex water-rich stratum shield receiving foam concrete box body according to claim 1, wherein the side wall (5) is provided with a vertical anchoring steel plate (6), and a supporting body (12) is arranged between the upturned structural beam (13) and the outer side of the profile steel box body (8).
4. The construction structure of the complex water-rich stratum shield receiving foam concrete box body according to claim 1, wherein the shaping formwork system (37) comprises a round steel plate (36), a steel pipe (33), square timber (31) and shaping steel templates (29), the round steel plate (36) is positioned at the center of the shaping formwork system (37), a steel pipe joint (32) is arranged on the round steel plate (36), one end of the steel pipe (33) is connected with the steel pipe joint (32), an adjustable jacking (30) is arranged at the other end of the steel pipe (33), and the square timber (31) is connected with the adjustable jacking (30); the shaping steel template (29) is in a ring shape, and the shaping steel template (29) is fixed on the square timber (31).
5. The construction structure of the complex water-rich stratum shield receiving foam concrete box body according to claim 4, wherein the shaping formwork system (37) further comprises a reinforcing annular plate (35), and the reinforcing annular plate (35) is arranged on the steel pipe (33) and used for reinforcing the steel pipe (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321413207.2U CN220890192U (en) | 2023-06-05 | 2023-06-05 | Construction structure of complex water-rich stratum shield receiving foam concrete box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321413207.2U CN220890192U (en) | 2023-06-05 | 2023-06-05 | Construction structure of complex water-rich stratum shield receiving foam concrete box |
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| Publication Number | Publication Date |
|---|---|
| CN220890192U true CN220890192U (en) | 2024-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321413207.2U Active CN220890192U (en) | 2023-06-05 | 2023-06-05 | Construction structure of complex water-rich stratum shield receiving foam concrete box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220890192U (en) |
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2023
- 2023-06-05 CN CN202321413207.2U patent/CN220890192U/en active Active
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