CN219508628U - Permanent open caisson for preventing pavement from subsidence - Google Patents

Permanent open caisson for preventing pavement from subsidence Download PDF

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Publication number
CN219508628U
CN219508628U CN202320598479.8U CN202320598479U CN219508628U CN 219508628 U CN219508628 U CN 219508628U CN 202320598479 U CN202320598479 U CN 202320598479U CN 219508628 U CN219508628 U CN 219508628U
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China
Prior art keywords
open caisson
caisson body
pipe
sealing
bottom plate
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CN202320598479.8U
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Chinese (zh)
Inventor
张凡孟
王志进
汪坤
周大俊
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Hefei Municipal Design And Research Institute Co ltd
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Hefei Municipal Design And Research Institute Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/60Planning or developing urban green infrastructure

Abstract

The utility model discloses a permanent open caisson for preventing pavement settlement, which comprises an open caisson body, an open caisson well lid and a pipe jacking pipeline, wherein the top of the open caisson body is provided with a groove, an elastic support is arranged in the groove, and the open caisson well lid is covered in the groove and contacted with the elastic support; the open caisson body is provided with a hole at the joint of the open caisson body and the pipe-jacking pipeline, and the hole is used for communicating the pipe-jacking pipeline; and sealing fillers are respectively arranged at the gaps between the open caisson well cover and the grooves and between the pipe-jacking pipeline and the reserved holes. The utility model uses the sealing filler to seal the gap, and the open caisson body has high structural strength and good integrity, thereby effectively preventing the post road from generating sedimentation or deformation caused by the uncompacted backfilled soil in the open caisson body, and effectively reducing the impact of ground live load and earthquake force on the open caisson body.

Description

Permanent open caisson for preventing pavement from subsidence
Technical Field
The utility model relates to the technical field of open caisson structures, in particular to a permanent open caisson for preventing pavement settlement.
Background
In the prior art, most open caissons are temporary structures in the construction process of jacking pipes below roads, and after the construction of the jacking pipes and the reinforced concrete inspection well in the open caissons is completed, the gaps between the open caissons and the inspection well are backfilled, so that an upper road structure is constructed immediately. However, the construction quality of the gap backfilling between the open caisson and the inspection well is difficult to ensure, and meanwhile, the gap between the pipe jacking pipeline and the inspection well is frequently leaked, so that a cavity or uneven settlement of the road can occur under the road.
Therefore, how to ensure construction quality and eliminate gaps between the pipe-jacking pipeline and the inspection well when the gap between the open caisson and the inspection well is backfilled, and effectively prevent the post road from sedimentation or deformation, is a technical problem which needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present utility model aims to provide a permanent open caisson for preventing road surface settlement, ensuring construction quality of void backfill between the open caisson and the inspection well, eliminating gaps between the pipe-jacking pipeline and the inspection well, so as to effectively prevent settlement or deformation of the road in the later period, and effectively reduce impact of ground live load and earthquake force on the open caisson.
In order to achieve the technical aim, the utility model provides a permanent open caisson for preventing pavement from sedimentation, which comprises an open caisson body, an open caisson well lid and a pipe jacking pipeline, wherein the top of the open caisson body is provided with a groove, an elastic support is arranged in the groove, and the open caisson well lid is covered in the groove and contacted with the elastic support; the open caisson body is provided with a hole at the joint of the open caisson body and the pipe-jacking pipeline, and the hole is used for communicating the pipe-jacking pipeline;
sealing fillers are respectively arranged at the gaps between the open caisson well cover and the grooves and between the pipe-jacking pipeline and the reserved holes;
the inner wall of the open caisson body is provided with a cat ladder, an inverted wall is arranged on the top well wall of the open caisson body, an open caisson bottom plate bottom sealing and open caisson casting material are sequentially arranged at the bottom of the open caisson body from bottom to top, an inspection shaft is arranged at the top of the open caisson well lid, a well lid is arranged at the top of the inspection shaft, and a drain pipe is arranged between the open caisson body and the inverted wall.
Preferably, the bottom of the open caisson body is provided with a cutting edge, and the bottom of the cutting edge is provided with a cutting edge angle steel.
Preferably, a reserved dowel bar is arranged at the connection area of the bottom sealing of the open caisson bottom plate and the cutting edge, and a pre-buried tie bar is arranged at the connection area of the bottom sealing of the open caisson bottom plate and the open caisson bottom plate; under the cooperation of the reserved dowel bars and the embedded tie bars, the open caisson body, the open caisson bottom plate bottom sealing and the open caisson bottom plate are connected into a whole.
Preferably, the sealing filler consists of asbestos cement arranged on the inner side of the open caisson body and sealing glue arranged on the outer side of the open caisson body.
Preferably, the top of the inverted wall is provided with a ring beam.
Preferably, the cat ladder extends from the bottom of the open caisson body to the top of the inspection shaft.
The utility model has the beneficial effects that:
due to the structural design, the gap is blocked by the sealing filler, and the open caisson body has high structural strength and good integrity, so that the settlement or deformation of a later-stage road caused by the uncompacted backfilled soil in the open caisson body can be effectively prevented, and the impact of ground live load and earthquake force on the open caisson body can be effectively reduced.
Drawings
FIG. 1 is a schematic plan view of the present utility model;
FIG. 2 is a schematic cross-sectional view of the structure at A-A in FIG. 1;
FIG. 3 is a schematic view of the structure of the blade leg part in the present utility model;
FIG. 4 is a schematic view of a pipe-in-pipe section according to the present utility model;
FIG. 5 is a schematic view of the structure of a rubber mount portion according to the present utility model;
FIG. 6 is a schematic view of a ladder stand portion of the present utility model;
FIG. 7 is a schematic view of the structure of the pre-embedded lacing wire portion of the present utility model;
FIG. 8 is a schematic view of an inspection shaft section according to the present utility model.
In the figure: 1 open caisson body, 2 open caisson cover plate, 3 pipe jacking pipeline, 4 open caisson bottom plate back cover, 5 open caisson bottom plate, 6 open caisson pouring material, 7 cat ladder, 8 inverted wall hanging, 9 ring beam, 10 well lid, 11 inspection shaft, 12 drain pipe, 13 elastic support, 14 asbestos cement, 15 reserved joint bar, 16 moulding bed, 17 edge angle steel, 18 sealant.
Detailed Description
The conception, specific structure, and technical effects of the present utility model will be further described with reference to the accompanying drawings to fully understand the objects, features, and effects of the present utility model.
Examples:
as shown in fig. 1-8, the permanent open caisson for preventing pavement settlement comprises an open caisson body 1, an open caisson well lid 2 and a pipe jacking pipeline 3, wherein a groove is formed in the top of the open caisson body 1, an elastic support 13 is placed in the groove, and the open caisson well lid 2 is covered in the groove and is in contact with the elastic support 13; the open caisson body 1 is provided with a hole at the joint with the pipe jacking pipeline 3 for communicating the pipe jacking pipeline 3;
sealing fillers are respectively arranged at the gaps between the open caisson well cover 2 and the grooves and between the pipe jacking pipeline 3 and the reserved holes;
the inner wall of the open caisson body 1 is provided with a cat ladder 7, the top well wall of the open caisson body is provided with an inverted wall 8, the bottom of the open caisson body 1 is sequentially provided with an open caisson bottom plate 5, an open caisson bottom plate sealing bottom 4 and an open caisson casting material 6 from bottom to top, and the top of the open caisson well cover 2 is provided with an inspection well shaft 11, so that constructors can conveniently carry out open caisson maintenance and enough vehicle bearing capacity can be provided; the top of the inspection shaft 11 is provided with a well cover 10, and a drain pipe 12 is arranged between the open caisson body 1 and the inverted wall 8; wherein, cat ladder 7 extends to the top of inspection pit shaft 11 by the bottom of open caisson body 1, and the maintenance operation of being convenient for.
The utility model has the main innovation that the open caisson body 1 has high structural strength and good integrity, and can effectively prevent the settlement or deformation of the road in the later period caused by the uncompacted backfilling of backfill in the open caisson body 1.
More specifically, as shown in fig. 3, the bottom of the open caisson body 1 and the open caisson body 1 is provided with a cutting edge, in order to improve the structural strength of the cutting edge, the bottom of the cutting edge is provided with a cutting edge angle steel 17, and the cutting edge angle steel 17 adopts Q235 angle steel, so that the cutting edge is prevented from being damaged in the sinking process, and the durability of the open caisson body 1 is improved.
As shown in fig. 3 and 7, a reserved dowel bar 15 is arranged at the connection area of the open caisson bottom plate seal 4 and the cutting edge, and a pre-buried tie bar is arranged at the connection area of the open caisson bottom plate seal 4 and the open caisson bottom plate 5; under the cooperation of the reserved dowel bars 15 and the pre-buried lacing bars, the open caisson body 1, the open caisson bottom plate sealing bottom 4 and the open caisson bottom plate 5 are connected into a whole, so that the rigidity of the open caisson body 1 is increased.
As shown in fig. 4, the sealing filler consists of asbestos cement 14 arranged on the inner side of the open caisson body 1 and sealing glue 18 arranged on the outer side of the open caisson body 1; the asbestos cement 14 and the sealant 18 are matched to seal gaps between the pipe jacking pipeline 3 and the open caisson body 1 and between the open caisson body 1 and the open caisson well cover 2, wherein the asbestos cement 14 can play a role in buffering impact of external force on the gaps, and the sealant 18 can prevent underground water outside the well from penetrating into the well; the sealant 18 can be a two-component polysulfide sealant.
In some embodiments, the pipe material of the pipe-jacking pipe 3 is suitable for reinforced concrete pipes, steel pipes, glass fiber reinforced plastic sand inclusion pipes and the like, the pipe diameter is suitable for 800-3000 mm, and the pipe is suitable for urban water supply and drainage pipe networks.
The cat ladder 7 is made of stainless steel, and an anti-corrosion plastic jacket is additionally arranged at the exposed handle.
The top of the inverted wall 8 is provided with a ring beam 9 to increase the integrity of the inverted wall 8 and to improve the tensile and shear strength of the inverted wall 8 masonry.
In some embodiments, the well cover 10 is formed by a heavy-duty ductile iron well cover and a support, and a wide-edge well cover is adopted, so that the well cover has good toughness, is not easy to damage, and has better anti-theft performance than a common cast iron well cover.
The drain pipes 12 were 50mm PVC pipes in diameter, set at a spacing of 2 m.
The elastic support 13 is made of rubber materials, and the rubber has the characteristics of low cost, no maintenance, simple structure, good elasticity and the like, can effectively reduce the impact effect of ground live load and earthquake force on the open caisson body 1, and simultaneously controls the displacement between the open caisson cover plate 2 and the open caisson body 1.
In other embodiments, a brick molding bed 16 is arranged inside the open caisson body 1, the molding bed 16 is formed by adopting non-clay solid bricks and cement mortar in a bricklaying way, and is removed before the open caisson body 1 sinks, so as to prevent sinking or tilting in the pouring process of the open caisson body 1, and simultaneously, the open caisson body 1 serves as a concrete template.
In conclusion, the utility model has simple construction process and high construction speed, the open caisson cover plate 2 and the open caisson body 1 can be constructed simultaneously, the construction period is saved, and the working area is small;
the structural strength is high, the integrity is good, and the settlement or deformation of a road in the later period caused by the uncompacted backfilling of backfilled soil in the open caisson body 1 can be effectively prevented;
the elastic support 13 made of rubber has the characteristics of low price, no maintenance, simple structure, good elasticity and the like, can effectively reduce the impact effect of ground live load and earthquake force on the open caisson body 1, and simultaneously controls the displacement between the open caisson cover plate 2 and the open caisson body 1;
the open caisson body 1 is used as an inspection well, so that the construction cost is reduced; meanwhile, the open caisson cover plate 2 is detachable, and convenience is provided for future pipe network reconstruction and expansion and new and old pipe network connection.
The construction steps of the utility model are as follows:
step one: firstly, setting a construction fence to seal a road. And then leveling the construction site, and simultaneously electrifying and water-supplying to meet the construction requirement.
Step two: and pouring the open caisson body 1, reserving holes in the area of the pipe jacking pipeline 3 during manufacturing of the open caisson body 1, simultaneously arranging reserved dowel bars 15 at the joint of the blade feet and the open caisson bottom plate sealing bottom 4, and reserving corresponding grooves at the top of the open caisson body 1 to facilitate later placement of the open caisson cover plate 2. When the open caisson body 1 is sunk to the designed elevation, a brick inverted wall 8 is arranged above the pool wall of the open caisson body 1, the brick inverted wall 8 is formed by adopting non-clay solid bricks and cement mortar for masonry, a drain pipe 12 is arranged at the bottom of the inverted wall 8, the drain pipe 12 is a 50mm PVC pipe with the diameter, and the interval is 2 m.
Step three: and pouring the open caisson bottom plate sealing bottom 4 and the open caisson bottom plate 5 in sequence, after construction is finished, carrying out construction of the pipe jacking pipeline 3, and after construction of the pipe jacking pipeline 3 is finished, adopting asbestos cement 14 to seal a gap between the pipe jacking pipeline 3 and the open caisson body 1, wherein the outermost side of the gap is filled with sealant 18.
Step four: and (3) dismantling the brick inverted wall 8, installing an elastic support 13 in a groove corresponding to the open caisson body 1, then hoisting the open caisson cover plate 2 by using a crane, and finely adjusting the angle in the placing process. Then the gap between the open caisson body 1 and the open caisson cover plate 2 is filled with asbestos cement 14, and the outermost side of the gap is filled with sealant 18.
Step five: and constructing an inspection shaft 11 and a well cover 10 on the open caisson cover plate 2, and finally backfilling earth on the open caisson cover plate 2 and constructing a road surface above the open caisson cover plate.
Taking XX express way engineering as an example, because the permanent well is positioned below a expressway of a road, firstly, the road is sealed, an open caisson body 1 is manufactured and sunk to a designed elevation, a bottom sealing 4 of the open caisson bottom plate and the open caisson bottom plate 5 are sequentially poured, a brick inverted wall 8 is removed, an elastic support 13 is arranged in a groove corresponding to the open caisson body 1, then an open caisson cover plate 2 is hoisted by a crane, a gap between the open caisson cover plate 2 and the open caisson body 1 is sealed, finally, an inspection shaft 11 and a well cover 10 are constructed on the open caisson cover plate 2, and the road pavement is restored.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (6)

1. Prevent permanent open caisson that road surface subsided, including open caisson body, open caisson well lid and push pipe pipeline, its characterized in that: the top of the open caisson body is provided with a groove, an elastic support is placed in the groove, and the open caisson well cover is covered in the groove and is contacted with the elastic support; the open caisson body is provided with a hole at the joint of the open caisson body and the pipe-jacking pipeline, and the hole is used for communicating the pipe-jacking pipeline;
sealing fillers are respectively arranged at the gaps between the open caisson well cover and the grooves and between the pipe-jacking pipeline and the reserved holes;
the inner wall of the open caisson body is provided with a cat ladder, an inverted wall is arranged on the top well wall of the open caisson body, an open caisson bottom plate bottom sealing and open caisson casting material are sequentially arranged at the bottom of the open caisson body from bottom to top, an inspection shaft is arranged at the top of the open caisson well lid, a well lid is arranged at the top of the inspection shaft, and a drain pipe is arranged between the open caisson body and the inverted wall.
2. A permanent open caisson for preventing pavement settlement according to claim 1, wherein: the bottom of the open caisson body is provided with a cutting edge foot, and the bottom of the cutting edge foot is provided with a cutting edge foot angle steel.
3. A permanent open caisson for preventing pavement settlement according to claim 2, wherein: a reserved dowel bar is arranged at the connection area of the bottom sealing of the open caisson bottom plate and the cutting edge, and a pre-buried dowel bar is arranged at the connection area of the bottom sealing of the open caisson bottom plate and the open caisson bottom plate; under the cooperation of the reserved dowel bars and the embedded tie bars, the open caisson body, the open caisson bottom plate bottom sealing and the open caisson bottom plate are connected into a whole.
4. A permanent open caisson for preventing pavement settlement according to claim 1 or 2, wherein: the sealing filler consists of asbestos cement arranged on the inner side of the open caisson body and sealing glue arranged on the outer side of the open caisson body.
5. The permanent open caisson for preventing pavement settlement according to claim 4, wherein: the top of the inverted wall is provided with a ring beam.
6. A permanent open caisson for preventing pavement settlement according to claim 1, wherein: the cat ladder extends from the bottom of the open caisson body to the top of the inspection shaft.
CN202320598479.8U 2023-03-24 2023-03-24 Permanent open caisson for preventing pavement from subsidence Active CN219508628U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202320598479.8U CN219508628U (en) 2023-03-24 2023-03-24 Permanent open caisson for preventing pavement from subsidence

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202320598479.8U CN219508628U (en) 2023-03-24 2023-03-24 Permanent open caisson for preventing pavement from subsidence

Publications (1)

Publication Number Publication Date
CN219508628U true CN219508628U (en) 2023-08-11

Family

ID=87547256

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202320598479.8U Active CN219508628U (en) 2023-03-24 2023-03-24 Permanent open caisson for preventing pavement from subsidence

Country Status (1)

Country Link
CN (1) CN219508628U (en)

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