CN221645592U - Flexible isolation device for protecting existing structure - Google Patents
Flexible isolation device for protecting existing structure Download PDFInfo
- Publication number
- CN221645592U CN221645592U CN202323487820.1U CN202323487820U CN221645592U CN 221645592 U CN221645592 U CN 221645592U CN 202323487820 U CN202323487820 U CN 202323487820U CN 221645592 U CN221645592 U CN 221645592U
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- CN
- China
- Prior art keywords
- steel
- casing
- protecting
- existing structure
- annular
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- 238000002955 isolation Methods 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 133
- 239000010959 steel Substances 0.000 claims abstract description 133
- 239000000463 material Substances 0.000 claims abstract description 16
- 238000009413 insulation Methods 0.000 claims abstract description 12
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 8
- 239000004567 concrete Substances 0.000 claims description 8
- 239000011496 polyurethane foam Substances 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 7
- 239000011368 organic material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 description 8
- 239000010426 asphalt Substances 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000005536 corrosion prevention Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model belongs to the technical field of piers, and particularly relates to a flexible isolation device for protecting an existing structure. The technical proposal is as follows: the utility model provides a flexible isolating device for protecting existing structure, includes outside steel pile casing, and outside steel pile casing endotheca is equipped with inboard steel pile casing, pours the pile foundation in the inboard steel pile casing, fills flexible isolation material layer in the annular space between inboard steel pile casing and the outside steel pile casing, and annular space upside between inboard steel pile casing and the outside steel pile casing is provided with annular steel apron. The present utility model provides a flexible insulation for protecting an existing structure.
Description
Technical Field
The utility model belongs to the technical field of piers, and particularly relates to a flexible isolation device for protecting an existing structure.
Background
As shown in fig. 3, the bridge pier structure is stressed with a certain eccentricity. Under the action of driving dynamic load in the operation stage, the deflection of the upper part of the pile foundation in the horizontal direction can be caused, and a certain level of horizontal acting force can be generated on the peripheral existing structures.
Disclosure of utility model
In order to solve the above problems in the prior art, an object of the present utility model is to provide a flexible insulation device for protecting an existing structure.
The technical scheme adopted by the utility model is as follows:
the utility model provides a flexible isolating device for protecting existing structure, includes outside steel pile casing, and outside steel pile casing endotheca is equipped with inboard steel pile casing, pours the pile foundation in the inboard steel pile casing, fills flexible isolation material layer in the annular space between inboard steel pile casing and the outside steel pile casing, and annular space upside between inboard steel pile casing and the outside steel pile casing is provided with annular steel apron.
According to the utility model, a gap with a certain width is reserved between the inner steel casing and the outer steel casing, and compressible materials such as polyurethane foam concrete and the like are filled between the inner steel casing and the outer steel casing to form a flexible isolation layer, so that the influence on the peripheral existing structure caused by horizontal deformation of the bridge structure under the action of dynamic load is avoided.
As a preferable scheme of the utility model, the material of the flexible isolation material layer is polyurethane foam concrete.
As a preferable scheme of the utility model, the diameter of the inner layer steel casing is 2.5m.
As a preferred embodiment of the present utility model, the diameter of the outer steel casing is 2.8m.
As a preferable scheme of the utility model, the depth of the inner steel pile casing driven into the foundation soil layer around the pile is 7-8 m.
As a preferable scheme of the utility model, the depth of the outer steel pile casing which is driven into the foundation soil layer around the pile is 5-6 m.
As a preferred aspect of the present utility model, the top of the inner steel casing is at least 100mm higher than the top of the outer steel casing.
As a preferable scheme of the utility model, the inner diameter of the annular steel cover plate is 2.5m, and the outer diameter of the annular steel cover plate is 2.9m.
As a preferable scheme of the utility model, the annular steel cover plate is sleeved on the inner steel casing, and the annular joint of the annular steel cover plate and the inner steel casing is plugged by adopting an organic material. The annular steel cover plate clamps the inner steel casing, and the annular joint of the annular steel cover plate and the inner steel casing is plugged by adopting asphalt paste or epoxy resin and other organic materials.
As a preferred embodiment of the utility model, the annular steel cover plate is lapped on the top of the outer steel casing. The annular steel cover plate and the outer steel casing are unconstrained and can slide relatively. Therefore, free deformation of the upper part of the pile foundation in the horizontal direction can be realized, and horizontal acting force on peripheral structures during horizontal deformation of the pile foundation can be isolated.
The beneficial effects of the utility model are as follows:
According to the utility model, a gap with a certain width is reserved between the inner steel casing and the outer steel casing, and compressible materials such as polyurethane foam concrete and the like are filled between the inner steel casing and the outer steel casing to form a flexible isolation layer, so that the influence on the peripheral existing structure caused by horizontal deformation of the bridge structure under the action of dynamic load is avoided.
Drawings
FIG. 1 is a cross-sectional view of the present utility model;
FIG. 2 is a top view of the present utility model;
Fig. 3 is a schematic structural view of the eccentric pier.
In the figure: 1-an outer steel casing; 2-an inner steel casing; 3-pile foundation; 4-a flexible barrier layer; 5-annular steel cover plates; and 6, sealing the seam with asphalt.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.
As shown in fig. 1 and 2, the flexible isolation device for protecting an existing structure of the present embodiment includes an outer steel casing 1, an inner steel casing 2 is sleeved in the outer steel casing 1, pile foundations 3 are poured in the inner steel casing 2, a flexible isolation material layer 4 is filled in an annular space between the inner steel casing 2 and the outer steel casing 1, and an annular steel cover plate 5 is arranged on the upper side of the annular space between the inner steel casing 2 and the outer steel casing 1.
According to the utility model, a gap with a certain width is reserved between the inner steel casing 2 and the outer steel casing 1, and compressible materials such as polyurethane foam concrete and the like are filled between the inner steel casing 2 and the outer steel casing 1 to form a flexible isolation layer, so that the influence on the existing peripheral structure caused by horizontal deformation of a bridge structure under the action of dynamic load is avoided.
Wherein the material of the flexible isolation material layer 4 is polyurethane foam concrete.
The diameter of the inner layer steel pile casing is 2.5m.
The diameter of the outer layer steel casing is 2.8m.
The depth of the inner steel pile casing driven into the foundation soil layer around the pile is 7-8 m.
The depth of the outer steel pile casing driven into the foundation soil layer around the pile is 5-6 m.
The top of the inner steel casing 2 is at least 100mm higher than the top of the outer steel casing 1.
The inner diameter of the annular steel cover plate 5 is 2.5m, and the outer diameter of the annular steel cover plate 5 is 2.9m.
Furthermore, the annular steel cover plate 5 is sleeved on the inner side steel casing 2, and the annular joint between the annular steel cover plate 5 and the inner side steel casing 2 is plugged by adopting an organic material. The annular steel cover plate 5 clamps the inner steel casing 2, and the annular joint of the annular steel cover plate and the inner steel casing 2 is plugged by adopting asphalt cement or epoxy resin and other organic materials. As shown in fig. 1, an asphalt seal 6 is arranged at the circumferential joint of the annular steel cover plate 5 and the inner steel casing 2.
The annular steel cover plate 5 is lapped on the top of the outer steel casing 1. The annular steel cover plate 5 and the outer steel casing 1 are unconstrained and can slide relatively. Thus, the free deformation of the upper part of the pile foundation 3 in the horizontal direction can be realized, and the horizontal acting force on the peripheral structures during the horizontal deformation of the pile foundation 3 can be isolated.
The durability of the inner steel casing 2 and the outer steel casing 1 is greatly influenced by environmental factors, and corresponding anti-corrosion measures such as epoxy resin coating corrosion prevention, cathode protection corrosion prevention and the like can be adopted according to specific durability (service life) requirements.
The compressible polyurethane foam concrete material has stable performance, is not easy to age, has water impermeability and water impermeability, is not easy to erode, has certain compressive strength and compressible elasticity, has the service life of about 30-40 years, and is recommended to take 30 years as a maintenance period. During maintenance, firstly, a shallow foundation pit is excavated to expose the annular steel cover plate 5, then the annular steel cover plate 5 is uncovered, polyurethane foam concrete is removed, then pouring is carried out again, then the annular steel cover plate 5 is restored to the original position, and the gaps are sealed by asphalt cement and other materials.
The construction method of the flexible isolation device comprises the following steps:
Assuming that the diameter of the pile foundation 3 is 2.5m, an outer steel casing 1 with the diameter of 2.8m (each side is wider than the pile foundation 3 by 150 mm) is firstly driven into the upper part of the pile foundation 3, and the driving depth of the outer steel casing 1 is about 5-6 m. After the slag soil in the outer side protection cylinder is removed, an inner side steel protection cylinder 2 with the diameter of 2.5m is driven into the inner side protection cylinder, the driving depth of the inner side steel protection cylinder 2 is larger than that of the outer side steel protection cylinder 1, and the depth is about 7-8 m (the top surface of the inner side steel protection cylinder 2 is at least 100mm higher than the top surface of the outer side steel protection cylinder 1). The cavity between the two steel casings is then filled with a compressible material as a flexible barrier. After the compressible material is filled, an annular steel cover plate 5 (with an inner diameter of 2.5m and an outer diameter of 2.9m, and each side is wider than the outer steel casing 1 by 50 mm) is arranged on the top surface of the steel casing so as to protect a cavity structure between the two steel casings and prevent sundries from entering. The annular steel cover plate 5 clamps the inner steel casing 2, and the annular joint of the annular steel cover plate and the inner steel casing 2 is plugged by adopting asphalt cement or epoxy resin and other organic materials. The annular steel cover plate 5 is wider than the outer steel casing by 150mm, and the steel cover plate and the outer steel casing 1 are unconstrained and can slide relatively. Thus, the free deformation of the upper part of the pile foundation 3 in the horizontal direction can be realized, and the horizontal acting force on the peripheral structures during the horizontal deformation of the pile foundation 3 can be isolated.
After the construction of the flexible isolation device is completed, the drilling operation of the pile foundation 3 is continued, the drill bit drills in the inner steel casing 2, and the flexible isolation device can isolate the influence on peripheral existing structures in the construction and operation processes.
The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model.
Claims (10)
1. A flexible insulation for protecting an existing structure, comprising: including outside steel pile casing (1), outside steel pile casing (1) endotheca is equipped with inboard steel pile casing (2), pours pile foundation (3) in inboard steel pile casing (2), and annular space intussuseption between inboard steel pile casing (2) and outside steel pile casing (1) is filled with flexible isolation material layer (4), and annular space upside between inboard steel pile casing (2) and outside steel pile casing (1) is provided with annular steel apron (5).
2. A flexible insulation for protecting an existing structure according to claim 1, wherein: the flexible isolation material layer (4) is made of polyurethane foam concrete.
3. A flexible insulation for protecting an existing structure according to claim 1, wherein: the diameter of the inner layer steel pile casing is 2.5m.
4. A flexible insulation for protecting an existing structure according to claim 1, wherein: the diameter of the outer layer steel casing is 2.8m.
5. A flexible insulation for protecting an existing structure according to claim 1, wherein: the depth of the inner steel pile casing driven into the foundation soil layer around the pile is 7-8 m.
6. A flexible insulation for protecting an existing structure according to claim 1, wherein: the depth of the outer steel pile casing driven into the foundation soil layer around the pile is 5-6 m.
7. A flexible insulation for protecting an existing structure according to claim 1, wherein: the top of the inner steel casing (2) is at least 100mm higher than the top of the outer steel casing (1).
8. A flexible insulation for protecting an existing structure according to claim 1, wherein: the inner diameter of the annular steel cover plate (5) is 2.5m, and the outer diameter of the annular steel cover plate (5) is 2.9m.
9. A flexible insulation for protecting an existing structure according to claim 1, wherein: the annular steel cover plate (5) is sleeved on the inner side steel casing (2), and the annular joint between the annular steel cover plate (5) and the inner side steel casing (2) is plugged by adopting an organic material.
10. A flexible insulation means for protecting an existing structure according to any one of claims 1 to 9, wherein: the annular steel cover plate (5) is lapped on the top of the outer steel casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323487820.1U CN221645592U (en) | 2023-12-20 | 2023-12-20 | Flexible isolation device for protecting existing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323487820.1U CN221645592U (en) | 2023-12-20 | 2023-12-20 | Flexible isolation device for protecting existing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221645592U true CN221645592U (en) | 2024-09-03 |
Family
ID=92517328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323487820.1U Active CN221645592U (en) | 2023-12-20 | 2023-12-20 | Flexible isolation device for protecting existing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221645592U (en) |
-
2023
- 2023-12-20 CN CN202323487820.1U patent/CN221645592U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |