CN221030313U - Contrary arch wall structure that does - Google Patents
Contrary arch wall structure that does Download PDFInfo
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- CN221030313U CN221030313U CN202322497106.4U CN202322497106U CN221030313U CN 221030313 U CN221030313 U CN 221030313U CN 202322497106 U CN202322497106 U CN 202322497106U CN 221030313 U CN221030313 U CN 221030313U
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- prefabricated steel
- arch wall
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 113
- 239000010959 steel Substances 0.000 claims abstract description 113
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011083 cement mortar Substances 0.000 claims abstract description 7
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 29
- 239000002689 soil Substances 0.000 description 10
- 238000003466 welding Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 238000009415 formwork Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model provides a reverse arch wall structure, which comprises a plurality of water stop retaining piles which are arranged on the inner wall of a top pipe well along the vertical direction and distributed in an annular mode, wherein a bottom plate is arranged at the bottom of the top pipe well, a plurality of cylindrical steel arch wall components formed by splicing three arc-shaped prefabricated steel arch walls with the same size are arranged above the bottom plate on the inner side of the water stop retaining piles, two arc-shaped prefabricated steel arch walls adjacent to each other on the left side are welded through connecting steel plates, two arc-shaped prefabricated steel arch walls adjacent to each other on the right side are welded through connecting steel plates, a plurality of cylindrical steel arch wall components adjacent to each other on the top pipe well are overlapped to the wellhead of the top pipe well, a plurality of grouting holes are formed in the arc-shaped prefabricated steel arch walls, and cement mortar is filled between the outer walls of the arc-shaped prefabricated steel arch walls and the water stop retaining piles through the grouting holes. The reverse arch wall structure has the advantages of high construction speed, stable stress system, reliable construction quality and small influence on ground traffic.
Description
Technical Field
The utility model relates to the technical field of building construction, in particular to a reverse arch wall structure.
Background
In municipal pipeline engineering, a pipe jacking process is often required. The jacking pipe needs to be firstly made into a jacking pipe well, and 2 conventional jacking pipe well methods exist, namely, a sunk well method and a reverse arch wall method. When there are obstacles in the ground or the surface working space is limited, the open caisson method cannot be generally adopted. The construction sequence of the reverse construction method arch wall is that a layer of soil (generally 0.5 m-1.0 m) is excavated, a circle of concrete is poured, and the next layer of soil is excavated after curing is carried out to the age. Therefore, the construction period of the top pipe well for constructing the top-down arch wall is determined to be longer, and the influence on ground traffic and the like is larger. Because the top tube well is generally circular, the cast-in-place is cast in a form of steel film on the inner side and no formwork on the outer side, the construction quality is not guaranteed, the circularity after construction is not guaranteed, and meanwhile, the cost of manually binding steel bars and supporting templates during construction is high. These have been short slabs of reverse arch walls.
Disclosure of utility model
Aiming at the defects of the prior art, the utility model provides a reverse arch wall structure which has high construction speed and stable stress system.
In order to achieve the technical scheme, the utility model provides a reverse arch wall structure, which comprises a plurality of water stop retaining piles which are arranged on the inner wall of a top pipe well along the vertical direction and distributed in an annular mode, wherein a bottom plate is arranged at the bottom of the top pipe well, a plurality of cylindrical steel arch wall components formed by splicing three arc-shaped prefabricated steel arch walls with the same size are arranged above the bottom plate on the inner side of the water stop retaining piles, two arc-shaped prefabricated steel arch walls adjacent to each other in the left and right direction are welded through connecting steel plates, two arc-shaped prefabricated steel arch walls adjacent to each other in the upper and lower direction are welded through connecting steel plates, a plurality of cylindrical steel arch wall components adjacent to each other in the upper and lower directions are overlapped to the wellhead of the top pipe well, a plurality of grouting holes are formed in the arc-shaped prefabricated steel arch walls, and cement mortar is poured into the space between the outer walls of the arc-shaped prefabricated steel arch walls and the water stop retaining piles through the grouting holes.
In the technical scheme, aiming at the short plates of the current reverse construction arch wall, the reverse construction arch wall is correspondingly corrected. The prefabricated reverse construction method arch wall is adopted, a specific arc-shaped prefabricated steel arch wall is poured in advance in a factory or on the ground, and one circle of arc-shaped prefabricated steel arch wall is equally divided into 3 identical arc-shaped prefabricated steel arch walls. After a layer of soil is excavated, the prefabricated arc-shaped prefabricated steel arch walls are adjusted into through ground lifting equipment, one arc-shaped prefabricated steel arch wall is installed and welded to form a circle, and the upper arc-shaped prefabricated steel arch wall, the lower arc-shaped prefabricated steel arch wall, the left arc-shaped prefabricated steel arch wall and the right arc-shaped prefabricated steel arch wall are welded through connecting steel plates. Meanwhile, in order to enable good connection stress to be provided between the reverse construction method arch wall and the water-stop retaining piles, grouting holes are reserved in advance on each arc-shaped prefabricated steel arch wall, after welding of the upper arc-shaped prefabricated steel arch wall and the lower arc-shaped prefabricated steel arch wall is completed, micro grouting is conducted through the grouting holes, cement mortar is filled between the outer sides of the arc-shaped prefabricated steel arch walls and the water-stop retaining piles, good stress integrity is formed, and hollowness or ground collapse after the backs of the arc-shaped prefabricated steel arch walls are avoided. The grouting holes are simultaneously used as hoisting holes of the arc prefabricated steel arch wall. And (3) constructing the top pipe well round by round until the bottom is excavated, and finishing the construction of the top pipe well.
Preferably, the inner side of each arc-shaped prefabricated steel arch wall is welded with two transverse stiffening rib plates which are arranged side by side at intervals. In order to strengthen the rigidity of the arc-shaped prefabricated steel arch wall, two transverse stiffening rib plates are additionally arranged on the arc-shaped prefabricated steel arch wall, so that the bearing capacity of the arc-shaped prefabricated steel arch wall is greatly enhanced, and the deformation of the arc-shaped prefabricated steel arch wall is reduced.
Preferably, the central angle of the arc-shaped prefabricated steel arch wall is 120 degrees, the thickness of the arc-shaped prefabricated steel arch wall is 20mm, and the height of the arc-shaped prefabricated steel arch wall is 1000mm.
Preferably, the height of the connecting steel plate is 200mm, the width is 80mm, and the thickness is 20mm.
Preferably, the diameter of the grouting holes is 20mm.
The reverse arch wall structure provided by the utility model has the beneficial effects that: the reverse arch wall structure is high in construction speed, stable in stress system, capable of prefabricating the arc-shaped prefabricated steel arch walls in a specific shape in advance, and capable of being welded and spliced by a hoister after a layer of soil layer is excavated, and capable of performing welding connection treatment on the upper arc-shaped prefabricated steel arch walls and the lower arc-shaped prefabricated steel arch walls through preset connecting steel plates. In order to avoid the cavity between the prefabricated arc-shaped prefabricated steel arch wall and the back soil, a reliable stress system is formed, and after welding and looping, the back of the arc-shaped prefabricated steel arch wall is subjected to quick grouting, so that a reliable stable stress system is formed between the arc-shaped prefabricated steel arch wall and an external soil body. The cyclic operation can rapidly carry out the earth-excavating construction, and the defects of low construction speed, unreliable construction quality, no guarantee of construction precision, large influence on ground traffic, certain pollution to the environment, high cost of manually supporting formwork and binding reinforcing steel bars and the like of the original cast-in-situ reverse construction method arch wall are 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 top view of a prefabricated steel arch wall according to the present utility model.
Fig. 4 is a front view of a prefabricated steel arch wall according to the present utility model.
In the figure: 1. a top pipe well; 2. a bottom plate; 3. a water-stopping retaining pile; 4. prefabricating a steel arch wall; 5. cement mortar; 6. transverse stiffening rib plates; 7. connecting steel plates; 8. grouting holes.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments obtained by those skilled in the art without making any inventive effort are within the scope of the present utility model.
Examples: a reverse arch wall structure.
Referring to fig. 1 to 4, a reverse arch wall structure comprises a plurality of water stop retaining piles 3 which are installed on the inner wall of a pipe jacking well 1 along the vertical direction and distributed in a ring shape, wherein a bottom plate 2 is installed at the bottom of the pipe jacking well 1, a plurality of cylindrical steel arch wall components formed by splicing three arc-shaped prefabricated steel arch walls 4 with the same size are installed above the bottom plate 2 on the inner side of the water stop retaining piles 3, the central angle of each arc-shaped prefabricated steel arch wall 4 is 120 degrees, the thickness of each arc-shaped prefabricated steel arch wall 4 is 20mm, and the height is 1000mm. The inner side of each arc-shaped prefabricated steel arch wall 4 is welded with two transverse stiffening rib plates 6 which are arranged at intervals side by side up and down, and two transverse stiffening rib plates 6 are additionally arranged on the arc-shaped prefabricated steel arch wall 4 to strengthen the rigidity of the arc-shaped prefabricated steel arch wall 4, so that the bearing capacity of the arc-shaped prefabricated steel arch wall 4 is greatly enhanced, and the deformation of the arc-shaped prefabricated steel arch wall 4 is reduced.
The left and right adjacent two arc-shaped prefabricated steel arch walls 4 are welded through a connecting steel plate 7, the upper and lower adjacent two arc-shaped prefabricated steel arch walls 4 are also welded through the connecting steel plate 7, the height of the connecting steel plate is 200mm, the width is 80mm, the thickness is 20mm, and a plurality of upper and lower adjacent cylindrical steel arch wall assemblies are overlapped to the wellhead of the top pipe well 1.
Three grouting holes 8 are formed in each arc-shaped prefabricated steel arch wall 4, the diameter of each grouting hole 8 is 20mm, cement mortar 5 is filled between the outer wall of each arc-shaped prefabricated steel arch wall 4 and the water stop retaining pile 3 through the grouting holes 8, so that a good stressed whole is formed, and hollows or ground collapse at the back of each arc-shaped prefabricated steel arch wall 4 are avoided.
In this embodiment, the short plates of the current reverse construction arch wall are corrected accordingly. The prefabricated reverse construction method arch wall is adopted, a specific arc-shaped prefabricated steel arch wall 4 is poured in advance in a factory or on the ground, and one circle of arc-shaped prefabricated steel arch wall 4 is equally divided into three identical arc-shaped prefabricated steel arch walls. After a layer of soil is excavated, the prefabricated arc-shaped prefabricated steel arch walls 4 are adjusted in through ground lifting equipment, one piece of prefabricated steel arch walls are installed and welded through connecting steel plates 7 to form a circle, and welding is conducted between the upper arc-shaped prefabricated steel arch walls 4 and the lower arc-shaped prefabricated steel arch walls 4 and between the left arc-shaped prefabricated steel arch walls 4 and the right arc-shaped prefabricated steel arch walls 4 through the connecting steel plates 7. Meanwhile, in order to enable the arc-shaped prefabricated steel arch walls 4 and the water-stop retaining piles 3 to have good connection stress, grouting holes 8 are reserved in advance on each arc-shaped prefabricated steel arch wall 4, after the welding of the upper arc-shaped prefabricated steel arch wall 4 and the lower arc-shaped prefabricated steel arch wall 4 is completed, micro grouting is conducted through the grouting holes 8, cement mortar 5 is filled between the outer sides of the arc-shaped prefabricated steel arch walls 4 and the water-stop retaining piles 3, good stress integrity is formed, and hollows or ground collapse at the back of the arc-shaped prefabricated steel arch walls 4 are avoided. The grouting holes 8 are used as hoisting holes of the arc prefabricated steel arch wall. And (3) constructing the top pipe well round by round until the bottom is excavated, and finishing the construction of the top pipe well.
The reverse arch wall structure is high in construction speed, stable in stress system, and capable of prefabricating the arc-shaped prefabricated steel arch walls 4 in a specific shape in advance, and performing welding and assembling on the upper arc-shaped prefabricated steel arch walls 4 and the lower arc-shaped prefabricated steel arch walls 4 through preset connecting steel plates 7 after a layer of soil layer is excavated. In order to avoid the hollow between the prefabricated arc-shaped prefabricated steel arch wall 4 and the back soil and form a reliable stress system, after welding and looping, the back of the arc-shaped prefabricated steel arch wall 4 is subjected to quick grouting, so that a reliable stable stress system is formed between the arc-shaped prefabricated steel arch wall and an external soil body. The cyclic operation can rapidly carry out the earth-excavating construction, and the defects of low construction speed, unreliable construction quality, no guarantee of construction precision, large influence on ground traffic, certain pollution to the environment, high cost of manually supporting formwork and binding reinforcing steel bars and the like of the original cast-in-situ reverse construction method arch wall are avoided.
The foregoing is a preferred embodiment of the present utility model, but the present utility model should not be limited to the embodiment and the disclosure of the drawings, so that the equivalents and modifications can be made without departing from the spirit of the disclosure.
Claims (5)
1. The utility model provides a contrary arch wall structure that works, includes that many are installed on top tube well inner wall along vertical direction and are annular distribution's stagnant water retaining pile, the bottom plate is installed to the bottom of top tube well, its characterized in that: the inner side of the water-stop retaining pile is positioned above the bottom plate, a plurality of cylindrical steel arch wall assemblies formed by splicing three arc-shaped prefabricated steel arch walls with the same size are arranged on the bottom plate, two arc-shaped prefabricated steel arch walls adjacent to each other left and right are welded through connecting steel plates, two arc-shaped prefabricated steel arch walls adjacent to each other up and down are welded through connecting steel plates, the cylindrical steel arch wall assemblies adjacent to each other up and down are overlapped to the wellhead of the top tube well, a plurality of grouting holes are formed in the arc-shaped prefabricated steel arch walls, and cement mortar is filled between the outer walls of the arc-shaped prefabricated steel arch walls and the water-stop retaining pile inwards through the grouting holes.
2. The inverted arch wall structure of claim 1, wherein: the inner side of each arc prefabricated steel arch wall is welded with two transverse stiffening rib plates which are arranged side by side at intervals.
3. The inverted arch wall structure of claim 1, wherein: the central angle of the arc prefabricated steel arch wall is 120 degrees, the thickness of the arc prefabricated steel arch wall is 20mm, and the height of the arc prefabricated steel arch wall is 1000mm.
4. The inverted arch wall structure of claim 1, wherein: the height of the connecting steel plate is 200mm, the width is 80mm, and the thickness is 20mm.
5. The inverted arch wall structure of claim 1, wherein: the diameter of the grouting holes is 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322497106.4U CN221030313U (en) | 2023-09-14 | 2023-09-14 | Contrary arch wall structure that does |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322497106.4U CN221030313U (en) | 2023-09-14 | 2023-09-14 | Contrary arch wall structure that does |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221030313U true CN221030313U (en) | 2024-05-28 |
Family
ID=91166827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322497106.4U Active CN221030313U (en) | 2023-09-14 | 2023-09-14 | Contrary arch wall structure that does |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221030313U (en) |
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2023
- 2023-09-14 CN CN202322497106.4U patent/CN221030313U/en active Active
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