CN217782075U - Pit supporting device in mucky soil foundation pit - Google Patents
Pit supporting device in mucky soil foundation pit Download PDFInfo
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- CN217782075U CN217782075U CN202221528117.3U CN202221528117U CN217782075U CN 217782075 U CN217782075 U CN 217782075U CN 202221528117 U CN202221528117 U CN 202221528117U CN 217782075 U CN217782075 U CN 217782075U
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Abstract
The utility model relates to a construction technical field provides a deep pit supporting device in mucky soil foundation ditch, includes: the supporting cylinder is formed by encircling and splicing a plurality of supporting steel plates along the circumferential direction of the supporting cylinder; the outer reinforcing fillets are arranged on the outer side of the supporting steel plate along the circumferential direction of the supporting cylinder; the inner supporting pieces are arranged in the supporting cylinder, two ends of each inner supporting piece are connected with the two supporting steel plates respectively, and each supporting steel plate is connected with at least one inner supporting piece. The beneficial effects of the utility model are that: a plurality of supporting steel plates are surrounded and spliced to form a supporting cylinder, and the supporting cylinder can select a corresponding number of supporting steel plates to be spliced according to the preset size of a pit in a foundation pit, so that the use is flexible and convenient; the intensity of a supporting cylinder is higher, and it is better to strut the effect, can effectively ensure pit protection safety, to coastal city and the project that the foundation bed is silt silty soil layer, can avoid the hidden danger of collapsing.
Description
Technical Field
The utility model belongs to the technical field of the construction, concretely relates to deep pit supporting device in mucky soil foundation ditch.
Background
With the development of foundation pit construction technology, a foundation pit support structure tends to be safe and perfect, but for a pit-in-pit construction structure (a pit is arranged at the bottom of a foundation pit), the existing pit support mode mainly comprises a brick mould, a prefabricated plate and a cement mixing pile gravity type retaining wall, and the above support mode mainly has the following defects under the geological condition of mucky soil: (1) The soil fluidity is high, the support is unstable by adopting a brick moulding bed or a prefabricated slab, and safety accident potential such as collapse exists; (2) The soil has high water content, and the brick bed die or the prefabricated slab support is easy to seep water, so that the construction quality hidden danger exists; (3) In general high-rise building engineering, the depth of an elevator shaft is about 2-4 m below a bottom plate, and a gravity type retaining wall support of a cement mixing pile is high in manufacturing cost and long in construction period. Therefore, the muddy soil underground pit supporting device is efficient, quick and safe to construct.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome current pit supporting device and protect unstable problem under mucky soil geological conditions, provide a supporting device that can use under the geological conditions of mucky soil.
The utility model provides a deep pit supporting device in mucky soil foundation ditch, include:
the supporting cylinder is formed by circumferentially surrounding and splicing a plurality of supporting steel plates along the supporting cylinder;
the supporting cylinder is arranged on the outer side of the supporting steel plate along the circumferential direction of the supporting cylinder, at least one external reinforcing fillet is arranged on each supporting steel plate, and the external reinforcing fillets of the adjacent supporting steel plates are connected;
the inner supporting pieces are arranged in the supporting cylinder, two ends of each inner supporting piece are connected with the two supporting steel plates respectively, and each supporting steel plate is connected with at least one inner supporting piece.
Further, the plurality of external reinforcing fillets are spliced end to end along the circumferential direction of the supporting cylinder to form a fillet ring surrounding the outer side of the supporting cylinder.
Through set up a plurality of external reinforcement fillets into the fillet ring of enclosing a supporting section of thick bamboo, can promote supporting device's whole ability of strutting.
Furthermore, the fillet ring has a plurality ofly, and a plurality ofly the fillet ring sets up along the direction of height interval of a support section of thick bamboo.
Further, the fillet ring is horizontally arranged on the outer side of the supporting and protecting cylinder, the inner supporting pieces are horizontally arranged on the inner side of the supporting and protecting cylinder, and the arrangement heights of the inner supporting pieces are the same as the arrangement height of the fillet ring.
By limiting the heights of the inner supporting piece and the fillet ring, the supporting cylinder is stressed evenly and does not deform and deform, and the supporting effect is ensured.
Further, the inner supporting piece comprises a steel pipe and U-shaped supports arranged at two ends of the steel pipe, and the U-shaped supports are connected with the supporting steel plate.
Furthermore, the external reinforcing fillet comprises I-shaped steel, the I-shaped steel comprises a web plate and a wing plate, the surfaces of the web plate and the wing plate are perpendicular to each other, and the wing plate of the I-shaped steel is tightly adhered to and welded on the outer side of the supporting steel plate.
By using the I-shaped steel as the external reinforcing fillet, the structural strength of the supporting steel plate can be enhanced, and the rigidity and strength of the external reinforcing fillet can be improved.
Furthermore, the length of the I-steel arranged on each supporting steel plate is longer than that of the supporting steel plate, the first end of the I-steel on the supporting steel plate is flush with the first end of the supporting steel plate, and the second end of the I-steel extends out of the second end of the supporting steel plate; and the first end of the I-shaped steel on each supporting steel plate is fixedly welded with the second end of the I-shaped steel on the adjacent supporting steel plate.
Furthermore, the supporting cylinder comprises four vertically arranged supporting steel plates, and the four supporting steel plates are sequentially connected in an end-to-end full-welding manner and enclosed to form the supporting cylinder.
Furthermore, the supporting steel plate is provided with a hanging ring through hole.
Further, the supporting device comprises a plurality of supporting cylinders which are sequentially stacked and fixed along the height direction of the supporting device.
The utility model has the advantages that: a plurality of supporting steel plates are surrounded and spliced to form a supporting cylinder, and the supporting cylinder can select a corresponding number of supporting steel plates to be spliced according to the preset size of a pit in a foundation pit, so that the use is flexible and convenient; and because the supporting cylinder is enclosed by the supporting steel plate, compared with the traditional brick moulding bed, the supporting cylinder has higher strength and better supporting effect, can effectively ensure the safety of pit protection, and can avoid the hidden danger of collapse for the project of coastal cities with a silt silty soil layer as the base layer; the supporting cylinder can be prefabricated in a factory in advance and then transported to the site, so that the construction period is greatly saved, and the construction efficiency is greatly improved; in addition, the splicing of the supporting steel plates of the supporting cylinder can adopt welding, especially can adopt a full-length welding connection mode, can effectively reduce the problem of deep pit water seepage, and improves the construction quality.
Drawings
Fig. 1 is the three-dimensional structure schematic diagram of the deep pit supporting device in the mucky soil foundation pit of the utility model.
Fig. 2 is an enlarged schematic view of a portion a in fig. 1.
Fig. 3 is the utility model discloses the hoist and mount schematic diagram of pit supporting device in the mucky soil foundation ditch.
Fig. 4 is the utility model discloses deep pit supporting device takes one's place and carries out the overlooking structure schematic diagram after the foundation ditch backfills in the installation of silt soil foundation ditch.
Fig. 5 isbase:Sub>A schematic sectional view taken along linebase:Sub>A-base:Sub>A of fig. 4.
In the figure, 1-supporting steel plates, 2-external reinforcing fillets, 21-webs, 22-wing plates, 3-internal supporting pieces, 31-steel pipes, 32-U-shaped drags, 4-hoisting ring perforation, 5-hoisting rings, 6-steel wire ropes, 7-backfilling materials and 8-elevator shafts/collector wells.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
The pit supporting device in the mucky soil foundation pit as shown in figure 1 comprises: the supporting device comprises a supporting cylinder, a fillet ring arranged on the outer side of the supporting cylinder and an inner supporting piece 3 arranged on the inner side of the supporting cylinder.
It encloses to close the concatenation to form to strut a polylith and strut steel sheet 1 edge the circumference of a section of thick bamboo of protecting, and a section of thick bamboo of protecting includes four and erects the supporting steel sheet 1 that sets up in this embodiment, and four are strutted steel sheet 1 and are enclosed to close to form a section of thick bamboo of protecting in head and the tail full weld connection in proper order. The length of each supporting steel plate 1 is set according to the supporting size of a deep pit (a pit required by the installation of an elevator shaft or a water collecting well) in the foundation pit or the area of the bottom plate of the foundation pit. The thickness of the supporting steel plate 1 of this embodiment is not less than 5mm.
The supporting device can stack a plurality of fixed supporting barrels in proper order along its direction of height, and it can adopt the full weld connected mode to pile up fixed mode, for example, the supporting device includes that two pile up fixed supporting barrels, and the top that is in the supporting barrel of lower floor and the bottom that is in the supporting barrel of upper strata are full weld connected, both can guarantee waterproof sealing nature, can guarantee joint strength again. The deeper the depth of the pit in the foundation pit is, the more the number of the support cylinders which are stacked up is.
The fillet ring surrounds the outside of strutting a section of thick bamboo, and the outside of every a plurality of fillet rings of can surrounding of strutting a section of thick bamboo, for example, the outside of a section of thick bamboo of strutting of this embodiment is surrounded there are two fillet rings, and these two fillet rings keep the interval along the direction of height of a section of thick bamboo. Each fillet ring is horizontally arranged. The fillet ring is formed by splicing four external reinforcing fillets 2 along the circumferential initial position of the supporting cylinder.
The inside of the supporting cylinder is provided with a plurality of inner supports 3. Two ends of the inner support piece 3 are respectively connected with the two supporting steel plates 1, and each supporting steel plate 1 is connected with at least one inner support piece 3.
The plurality of inner supporting members 3 are horizontally arranged, in the embodiment, the inner supporting members 3 are arranged in two groups at intervals in the height direction, and the arrangement height of each group of inner supporting members 3 is the same as that of each fillet ring. Since two fillet rings are provided in this embodiment, a set of inner supports 3 is provided on the level of each fillet ring. Specifically, the group of inner supporting members 3 of this embodiment includes four inner supporting members 3, each inner supporting member 3 includes a steel pipe 31 and U-shaped brackets disposed at two ends of the steel pipe 31, and the U-shaped brackets are connected to the supporting steel plate 1. The steel pipe 31 and the U-shaped support can be in threaded connection, so that the matching depth can be adjusted, the overall supporting length of the inner supporting piece 3 can be adjusted, and the U-shaped support can be tightly supported on the inner side of the supporting steel plate 1. Each inner support 3 is horizontally arranged, that is, the support direction is the length direction of the steel pipe 31, that is, the steel pipe 31 is horizontally arranged, the central axis of the steel pipe 31 and the central horizontal plane of the fillet ring are on the same plane, of course, the height difference between the central axis of the steel pipe 31 and the central horizontal plane of the fillet ring can be allowed in the vertical direction, but the height difference should be smaller than the height of the fillet ring. Each set of inner supports 3 has four inner supports 3, i.e. four steel tubes 31. The supporting cylinder is provided with four supporting steel plates 1, and the horizontal cross section of the supporting cylinder formed by splicing the four supporting steel plates 1 is a rectangular ring structure. The four supporting steel plates 1 are opposite to each other in pairs, two inner supporting pieces 3 are arranged between every two opposite supporting steel plates 1, and the steel pipes 31 of the two inner supporting pieces 3 are perpendicular to the plate surfaces of the two opposite supporting steel plates 1.
The external reinforcing fillet 2 comprises an I-steel which comprises a web plate 21 and a wing plate 22 with vertical plate surfaces. In fact, as is well known in the art, the i-beam comprises a web 21 and flanges 22 disposed at both ends of the web 21, and the two flanges 22 are parallel and perpendicular to the web 21. The wing plate 22 (one of the two wing plates 22) of the I-shaped steel is tightly welded on the outer side of the supporting steel plate 1, namely the plate surface of the wing plate 22 is parallel to the plate surface of the supporting steel plate 1, and the plate surface of the web plate 21 is perpendicular to the plate surface of the supporting steel plate 1.
As shown in fig. 2, the length of the i-beam arranged on each supporting steel plate 1 is longer than that of the supporting steel plate 1, and the first end of the i-beam on the supporting steel plate 1 is flush with the first end of the supporting steel plate 1, the second end of the i-beam extends out of the second end of the supporting steel plate 1, and the extending length of the second end is equal to the outer distance between two wing plates 22 of the i-beam; the first end of the i-steel on each supporting steel plate 1 is welded and fixed with the second end of the i-steel on the adjacent supporting steel plate 1 (namely, the wing plate 22 of the i-steel extending out of the supporting steel plate 1). The supporting cylinder and the I-steel outside the supporting cylinder in the embodiment are prefabricated in advance and assembled.
Referring to fig. 1 and 3, the supporting steel plate 1 is provided with a lifting ring through hole 4. The hanging ring perforation 4 is provided with a hanging ring 5. And a steel wire rope 6 is connected to the hoisting ring 5 so as to hoist the supporting device conveniently. The eye through-hole 4 is provided on the opposite supporting steel plate 1 of the supporting cylinder. After the supporting cylinder is hoisted to the bottom of the foundation pit, the inner supporting piece 3 is installed inside the supporting cylinder. As shown in fig. 3 and 4, after the inner supporting member 3 is installed, backfill construction of backfill materials 7 is carried out, layered backfill is needed during backfill, the conditions of soil bodies on two sides are observed, and the construction is stopped immediately if abnormity occurs. After the backfilling is finished, the construction of a cushion layer in the foundation pit is carried out, and after the construction of the cushion layer is finished, the inner supporting piece 3 is removed, and the waterproof and reinforcing steel bar construction of the deep pit (such as an elevator shaft/a water collecting well 8) is carried out.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that a person skilled in the art should also recognize that several modifications and decorations can be made without departing from the principle of the present invention, and the protection scope of the present invention is also covered.
Claims (10)
1. The utility model provides a pit supporting device in mucky soil foundation ditch which characterized in that includes:
the supporting cylinder is formed by circumferentially surrounding and splicing a plurality of supporting steel plates along the supporting cylinder;
the plurality of external reinforcing fillets are arranged on the outer sides of the supporting steel plates along the circumferential direction of the supporting cylinder, at least one external reinforcing fillet is arranged on each supporting steel plate, and the external reinforcing fillets of the adjacent supporting steel plates are connected;
the inner supporting pieces are arranged in the supporting cylinder, two ends of each inner supporting piece are respectively connected with the two supporting steel plates, and each supporting steel plate is connected with at least one inner supporting piece.
2. The device for supporting the pit in the mucky soil foundation pit according to claim 1, wherein the plurality of external reinforcing fillets are spliced end to end along the circumferential direction of the supporting cylinder to form a fillet ring surrounding the outer side of the supporting cylinder.
3. The apparatus for supporting a pit in a muddy soil foundation pit according to claim 2, wherein said plurality of ridge rings are provided at intervals in a height direction of said supporting cylinder.
4. The mucky soil foundation pit internal pit supporting device according to claim 2, wherein the fillet rings are horizontally arranged at the outer side of the supporting cylinder, the plurality of internal supporting members are horizontally arranged at the inner side of the supporting cylinder, and the arrangement heights of the plurality of internal supporting members are the same as the arrangement height of the fillet rings.
5. The apparatus for supporting a pit in a muddy soil foundation pit according to claim 4, wherein the inner support member comprises a steel pipe and U-shaped brackets provided at both ends of the steel pipe, the U-shaped brackets being connected to the supporting steel plates.
6. The device for supporting the pit in the mucky soil foundation pit according to claim 1, wherein the external reinforcing ribs comprise I-shaped steel, the I-shaped steel comprises a web plate and a wing plate, the surfaces of the web plate and the wing plate are vertical to each other, and the wing plate of the I-shaped steel is tightly welded on the outer side of the supporting steel plate.
7. The apparatus for supporting a pit in a muddy soil foundation pit according to claim 6, wherein the length of the I-shaped steel provided on each of the supporting steel plates is longer than the length of the supporting steel plate, and a first end of the I-shaped steel provided on the supporting steel plate is flush with a first end of the supporting steel plate, and a second end of the I-shaped steel extends beyond a second end of the supporting steel plate; and the first end of the I-shaped steel on each supporting steel plate is welded and fixed with the second end of the I-shaped steel on the adjacent supporting steel plate.
8. The device for supporting the pit in the mucky soil foundation pit according to claim 1, wherein the supporting cylinder comprises four vertically arranged supporting steel plates, and the four supporting steel plates are sequentially surrounded by end-to-end full-welded joints to form the supporting cylinder.
9. The device for supporting a pit in a mucky soil foundation pit according to claim 1, wherein the supporting steel plate is provided with a lifting ring perforation.
10. The apparatus for supporting a pit in a muddy soil foundation pit as claimed in claim 1, wherein said supporting apparatus comprises a plurality of said supporting cylinders fixed in a stacked manner in order in a height direction thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221528117.3U CN217782075U (en) | 2022-06-19 | 2022-06-19 | Pit supporting device in mucky soil foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221528117.3U CN217782075U (en) | 2022-06-19 | 2022-06-19 | Pit supporting device in mucky soil foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217782075U true CN217782075U (en) | 2022-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221528117.3U Active CN217782075U (en) | 2022-06-19 | 2022-06-19 | Pit supporting device in mucky soil foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217782075U (en) |
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2022
- 2022-06-19 CN CN202221528117.3U patent/CN217782075U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230615 Address after: 201900 floor 1, building 1, No. 58, Dijie Road, Baoshan District, Shanghai Patentee after: China Construction Third Engineering Bureau First Construction Engineering (Shanghai) Co.,Ltd. Patentee after: CHINA CONSTRUCTION THIRD BUREAU FIRST ENGINEERING Co.,Ltd. Address before: 430040, No. 1, Soochow Road, Dongxihu District, Hubei, Wuhan Patentee before: CHINA CONSTRUCTION THIRD BUREAU FIRST ENGINEERING Co.,Ltd. |
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| TR01 | Transfer of patent right |