CN117051873A - Construction method for increasing rigidity of wall of open caisson of cyclone well - Google Patents
Construction method for increasing rigidity of wall of open caisson of cyclone well Download PDFInfo
- Publication number
- CN117051873A CN117051873A CN202311251056.XA CN202311251056A CN117051873A CN 117051873 A CN117051873 A CN 117051873A CN 202311251056 A CN202311251056 A CN 202311251056A CN 117051873 A CN117051873 A CN 117051873A
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- Prior art keywords
- wall
- reinforcing
- cyclone well
- rigidity
- open caisson
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 54
- 229910000831 Steel Inorganic materials 0.000 claims description 21
- 239000010959 steel Substances 0.000 claims description 21
- 238000004873 anchoring Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 8
- 239000002689 soil Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Cyclones (AREA)
Abstract
The invention discloses a construction method for increasing the rigidity of the wall of a cyclone well open caisson, and relates to the technical field of cyclone well open caisson construction. According to the invention, the reinforcing belt is arranged in the wall of the cyclone well, embedded parts are arranged on the inner surface of the reinforcing belt at intervals, and the inner support is sequentially welded and connected with the embedded parts, so that a combined double steel-mixed support reinforcing system is formed. The reinforcing band is similar to a hidden beam, the circumferential reinforcing ribs and stirrups are added on the basis of the circumferential reinforcing steel bars of the original cylinder wall, the rigidity of the reinforcing band is improved, and the internal support is in the shape of a regular polygon which is sequentially connected, so that the stress is reasonable and balanced.
Description
Technical Field
The invention relates to the technical field of open caisson construction of a cyclone well, in particular to a construction method for increasing the rigidity of the wall of the open caisson of the cyclone well.
Background
In the field of metallurgical construction, a cyclone well is an important building and is indispensable as a steel rolling and steelmaking public auxiliary water system. The cyclone well is generally a cylindrical reinforced concrete structure, has a larger diameter (about 18-35 meters), is thicker in the wall (between 1-2 meters), is buried deeper (about 20-35 meters), and belongs to important points and difficulties in construction. According to the soil conditions, the ground water level and the surrounding working conditions, common construction methods comprise a large excavation method, a reverse construction method, a sunk well and the like, and the sunk well method is relatively common. The basic principle of the open caisson method is that the wall of the rotational flow well is divided into sections to be poured respectively, the height of each section is about 5-8 meters, the concrete of the wall begins to sink for a plurality of times after reaching a certain strength, along with the gradual sinking of the wall, the lateral pressure of soil body to the wall is larger and larger, particularly, the silt and silt soil layers almost have no cohesive force, and the lateral pressure of the soil body is resisted by the wall of the rotational flow well. In order to prevent the loss of the cylinder wall caused by overlarge lateral pressure and enhance the rigidity of the cylinder wall, the invention provides a device for increasing the rigidity of the cylinder wall and a construction method.
Disclosure of Invention
In order to solve the technical problems, the invention provides a construction method for increasing the rigidity of the wall of the open caisson of the cyclone well, and the strength, rigidity and stability of the whole wall of the cyclone well are improved by arranging a reinforcing belt and an inner support.
In order to achieve the technical purpose, the invention adopts the following scheme:
the construction method for increasing the rigidity of the wall of the open caisson of the cyclone well comprises the following steps:
s1, adding a reinforcing belt on the wall of the lowest section of the cyclone well;
s2, uniformly arranging an inner support embedded part on the inner side of the reinforcing belt, and arranging anchoring ribs on the back surface of the embedded part;
s3, sinking the sinking shaft on the wall of the cylinder to 90-110 cm away from the ground, and carrying out internal support installation: fixedly connecting the inner support with the embedded part in sequence to form a polygonal support system;
s4, arranging an inclined support connecting rod in the middle of the inner support, wherein the connecting rod is connected with the embedded part
S5, continuing sinking of the sinking well, performing back cover and bottom plate construction after sinking in place, and removing the inner support after the bottom plate reaches the set strength.
Further, the width of the reinforcing belt is consistent with the thickness of the cyclone well wall, and the height is controlled to be 800-1500 mm.
Further, reinforcing band circumferential steel bars are additionally arranged on the circumferential steel bars of the wall of the cyclone shaft in an encryption mode at intervals, annular horizontal reinforcing bars are additionally arranged in the thickness direction of the wall of the cyclone shaft at intervals, and hooping bars are arranged at equal intervals.
Further, the distance between the original reinforcing bars at two sides (the inner side and the outer side of the original cylinder wall) of the reinforcing band is 150-220 mm, the reinforcing bars are encrypted to 75-110 mm, the stirrups adopt reinforcing bars with diameters phi 10-phi 14, and the distance is 200-400 mm; the annular horizontal reinforcing ribs adopt main ribs with the same specification and diameter as the original reinforcing ribs, and the distance is 200-250 mm.
Furthermore, the embedded part is made of steel plates with the thickness of more than or equal to 16mm, and the size is 500 multiplied by 1000mm.
Further, when the depth of the cyclone well exceeds 25 meters, a second internal support is arranged on the inner wall of the second section from bottom to top.
Further, the inner support is H-shaped steel or steel pipe.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the reinforcing belt is arranged in the wall of the cyclone well, embedded parts are arranged on the inner surface of the reinforcing belt at intervals, and the inner support is sequentially welded and connected with the embedded parts, so that a combined double steel-mixed support reinforcing system is formed. The reinforcing band is similar to a hidden beam, the circumferential reinforcing ribs and stirrups are added on the basis of the circumferential reinforcing steel bars of the original cylinder wall, the rigidity of the reinforcing band is improved, and the internal support is in the shape of a regular polygon which is sequentially connected, so that the stress is reasonable and balanced.
Drawings
FIG. 1 is a schematic view of a construction structure of a wall of a sunk well of a cyclone well, which is provided by the embodiment of the invention;
FIG. 2 is a cross-sectional view taken along the A-A plane of FIG. 1;
FIG. 3 is a cross-sectional view taken along the B-B plane in FIG. 2;
FIG. 4 is a schematic structural view of a reinforcing in-band support embedment provided by an embodiment of the present invention;
marked in the figure as: 1. a cylinder wall; 2. a reinforcing tape; 3. an embedded part; 4. an inner support; 5. reinforcing stirrups; 6. reinforcing the circumferential reinforcing steel bars; 7. circumferential reinforcing steel bars of the cylinder wall; 8. a diagonal support connecting rod; 9. annular horizontal reinforcing ribs.
Detailed Description
The present invention will be described in detail with reference to the following embodiments for a full understanding of the objects, features and effects of the present invention, but the present invention is not limited thereto.
As shown in fig. 1 to 4, the construction method for increasing the rigidity of the wall of the open caisson of the cyclone well provided by the invention comprises the following steps:
s1, a construction reinforcing belt 2: according to the depth and the wall thickness of the cyclone well, casting the cylinder wall 1 in sections, and controlling each section to be 5-7 m; a reinforcing belt 2 is arranged on the lowermost section of the cylinder wall 1. The width of the reinforcing belt 2 is consistent with the thickness of the cyclone well wall, and the height is controlled to be 800-1500 mm. Newly added reinforcing band circumferential steel bars 6 are arranged on circumferential steel bars 7 of the original cylinder wall at intervals on the inner side and the outer side of the original rotational flow cylinder wall 1, and annular encryption is carried out on the inner side and the outer side of the rotational flow cylinder wall 1; annular horizontal reinforcing ribs 9 with certain intervals are arranged in the thickness direction of the cylinder wall to serve as structural ribs, and reinforcing stirrups 5 are arranged on the reinforcing belt 2 at equal intervals.
Preferably, the distance between the reinforcing steel bars on two sides (the inner side and the outer side of the original cylinder wall) of the reinforcing band 2 is 150-220 mm, the reinforcing steel bars can be encrypted to 75-110 mm, the reinforcing stirrups 5 are steel bars with diameters phi 10-phi 14, the distance is 200-400 mm, and the annular horizontal reinforcing steel bars 9 in the direction of the reinforcing band width can be main steel bars with the same specification diameter as the annular reinforcing steel bars 7 (or the reinforcing stirrups 5) of the original cylinder wall, and the distance is 200-250 mm.
S2, uniformly arranging inner support embedded parts 3 on the inner side of the reinforcing belt 2. The embedded part 3 is a steel plate with the thickness being more than or equal to 16mm, the size is 500 x 1000mm, the requirement of support welding is required to be met, and a certain number of steel bar anchoring ribs are arranged on the back surface of the embedded part 3.
When the cyclone well is deeper (the depth exceeds 25 m), a second support is arranged on the inner wall of the second section below, so that the rigidity of the lower part of the cylinder wall 1 is increased.
S3, mounting an inner support 4: and (5) installing the inner support 4 when the sinking well of the cylinder wall 1 is sunk to 90-110 cm away from the ground. And welding the inner support 4 with the cylinder wall embedded part 3 in sequence to form a polygonal support system. The inner support 4 is preferably H-shaped steel or steel pipe, and the size is preferably H-shaped steel with HM more than 350 or thick-wall steel pipe with phi more than 350.
Preferably, an inclined support connecting rod 8 is arranged in the middle of the inner support 4 to prevent the support from being bent downwards, and the inclined support connecting rod 8 is connected with the embedded part 3 on the cylinder wall 1.
S4, sinking the open caisson: and after the inner support system is installed, the sinking of the sinking well of the cylinder wall 1 is continued.
S5, support dismantling: the sinking shaft of the cylinder wall is sunk in place, the bottom sealing and the bottom plate construction are carried out, and the inner support 4 is removed after the bottom plate reaches a certain strength and has a support function.
The invention has the following effects:
1. the construction is simple, easy to operate, is equivalent to the wall of the cylinder and increases the strengthening rib, and the polygon internal support plays dual supporting effect simultaneously, forms combination steel-mixed frame braced system with the wall of the cylinder reinforcing band, wholly improves the intensity, rigidity and the stability of wall of the cylinder.
2. The support can be repeatedly utilized, the earth excavation and the earth discharge in the well are not influenced, and the construction operation is convenient.
3. The reinforcing belt and the cylinder wall are integrated, so that the strength of the cylinder wall is improved, and the appearance quality of the structure is not affected.
Finally, it should be noted that: the above list is only a preferred embodiment of the present invention, and it is understood that those skilled in the art can make modifications and variations thereto, and it is intended that the present invention be construed as the scope of the appended claims and their equivalents.
Claims (7)
1. The construction method for increasing the rigidity of the wall of the open caisson of the cyclone well is characterized by comprising the following steps:
s1, adding a reinforcing belt on the wall of the lowest section of the cyclone well;
s2, uniformly arranging an inner support embedded part on the inner side of the reinforcing belt, and arranging anchoring ribs on the back surface of the embedded part;
s3, sinking the sinking shaft on the wall of the cylinder to 90-110 cm away from the ground, and carrying out internal support installation: fixedly connecting the inner support with the embedded part in sequence to form a polygonal support system;
s4, arranging an inclined support connecting rod in the middle of the inner support, wherein the connecting rod is connected with the embedded part
S5, continuing sinking of the sinking well, performing back cover and bottom plate construction after sinking in place, and removing the inner support after the bottom plate reaches the set strength.
2. The construction method for increasing the rigidity of the wall of the open caisson of the cyclone well according to claim 1, wherein the width of the reinforcing band is consistent with the thickness of the wall of the cyclone well, and the height is controlled to be 800-1500 mm.
3. The construction method for increasing the rigidity of the wall of the open caisson of the cyclone well according to claim 1, wherein annular reinforcing bars with reinforcing bands are additionally arranged on the annular reinforcing bars of the wall of the cyclone well at intervals in an encryption mode, annular horizontal reinforcing bars are additionally arranged in the thickness direction of the wall of the cyclone well at intervals, and hoops are arranged at equal intervals.
4. The construction method for increasing the rigidity of the wall of the open caisson of the cyclone well according to claim 3, wherein the distance between original steel bars at two sides of the reinforcing band is 150-220 mm, the reinforcing band is encrypted to a distance of 75-110 mm, the stirrups adopt steel bars with diameters phi 10-phi 14, and the distance is 200-400 mm; the annular horizontal reinforcing ribs adopt main ribs with the same specification and diameter as the original reinforcing ribs, and the distance is 200-250 mm.
5. The construction method for increasing the rigidity of the wall of the open caisson of the cyclone well according to claim 1, wherein the embedded part is made of steel plates with the thickness of more than or equal to 16mm and the size of 500 multiplied by 1000mm.
6. The construction method for increasing the rigidity of the wall of the open caisson of a cyclone well according to claim 1, wherein when the depth of the cyclone well exceeds 25 meters, a second inner support is arranged on the inner wall of the second section from bottom to top.
7. The construction method for increasing the rigidity of the wall of the open caisson of a cyclone well according to claim 1, wherein the inner support is H-shaped steel or a steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311251056.XA CN117051873A (en) | 2023-09-26 | 2023-09-26 | Construction method for increasing rigidity of wall of open caisson of cyclone well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311251056.XA CN117051873A (en) | 2023-09-26 | 2023-09-26 | Construction method for increasing rigidity of wall of open caisson of cyclone well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117051873A true CN117051873A (en) | 2023-11-14 |
Family
ID=88653807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311251056.XA Pending CN117051873A (en) | 2023-09-26 | 2023-09-26 | Construction method for increasing rigidity of wall of open caisson of cyclone well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117051873A (en) |
-
2023
- 2023-09-26 CN CN202311251056.XA patent/CN117051873A/en active Pending
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