CN216615879U - Arch ring supporting system - Google Patents
Arch ring supporting system Download PDFInfo
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- CN216615879U CN216615879U CN202123359933.4U CN202123359933U CN216615879U CN 216615879 U CN216615879 U CN 216615879U CN 202123359933 U CN202123359933 U CN 202123359933U CN 216615879 U CN216615879 U CN 216615879U
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Abstract
The utility model discloses an arch ring supporting system which comprises a double-layer waterproof curtain structure arranged on the outer side of an oval foundation pit and an arch ring supporting structure arranged in the oval foundation pit; arch ring supporting construction is including setting up vault supporting construction, the vertical setting at the top of oval foundation ditch are in arch ring lateral wall supporting construction and setting on the lateral wall of oval foundation ditch are in the bottom of vault supporting construction just lays arch ring lateral wall supporting construction and setting on the bottom of oval foundation ditch just lay the arch end supporting construction of arch ring lateral wall supporting construction's bottom. According to the utility model, the waterproof curtain is poured on the outer side of the oval foundation pit, so that underground water in a water-rich area is enclosed, the underground water does not influence the arch ring structure, and disturbance is not caused to the stability of the arch ring; through setting up vault supporting construction with arch end supporting construction strengthens strutting to the lateral wall of arch ring, has improved the support efficiency of arch ring and when strutting.
Description
Technical Field
The utility model belongs to the technical field of deep foundation pit supporting, and particularly relates to an arch ring supporting system.
Background
In the construction of basement structures of building engineering, the supporting and retaining method for foundation pit side slopes directly influences engineering cost, construction period and safety. Steel sheet piles or reinforced concrete piles are generally adopted for retaining soil at home and abroad, the retaining pile is in a very unfavorable vertical cantilever stress state, in order to obtain reliable embedment, the length of the retaining pile is about twice as large as the depth of a foundation pit, and even if the retaining pile is in the length, the top of the retaining pile still often has overlarge displacement; meanwhile, in the excavation process of the deep foundation pit, a water-rich area is often encountered, the amount of underground water is medium and rich, the spatial distribution is extremely uneven, the disturbance to surrounding buildings or existing lines is easily caused by adopting traditional construction, the stability of the pit wall of the deep foundation pit is influenced, and the phenomena of collapse and water burst can also occur. Therefore, a reverse arch structure of a water-rich area near the existing line is proposed to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide an arch ring supporting system aiming at the defects in the prior art, and the waterproof curtain is poured on the outer side of the oval foundation pit to play a role in blocking underground water in the water-rich area, so that the underground water does not influence the arch ring structure and disturb the stability of the arch ring; through setting up vault supporting construction with arch end supporting construction strengthens strutting to the lateral wall of arch ring, has improved the support efficiency of arch ring and when strutting.
In order to solve the technical problems, the utility model adopts the technical scheme that: an arch ring supporting system, characterized in that: the waterproof curtain structure comprises a double-layer waterproof curtain structure arranged on the outer side of an oval foundation pit and an arch ring supporting structure arranged in the oval foundation pit;
the double-layer waterproof curtain structure comprises a first reinforcing layer and a second reinforcing layer, wherein the first reinforcing layer is arranged on the outer side of the oval foundation pit, the second reinforcing layer is arranged on the outer side of the first reinforcing layer, the depth of the first reinforcing layer is equal to that of the second reinforcing layer, and the depth of the first reinforcing layer and the depth of the second reinforcing layer are both larger than that of the oval foundation pit;
the arch ring supporting structure comprises a vault supporting structure arranged at the top of the oval foundation pit, an arch ring side wall supporting structure vertically arranged at the bottom of the vault supporting structure and arranged on the side wall of the oval foundation pit, and an arch bottom supporting structure arranged at the bottom of the oval foundation pit and arranged at the bottom of the arch ring side wall supporting structure; the arch crown supporting structure, the arch ring side wall supporting structure and the arch bottom supporting structure form an arch ring supporting structure with a Z-shaped section.
The arch ring supporting system is characterized in that: the oval foundation pit comprises a first unit foundation pit, a plurality of second unit foundation pits and a third unit foundation pit, wherein the first unit foundation pit is horizontally arranged, the plurality of second unit foundation pits are horizontally arranged at the bottom of the first unit foundation pits and are continuously arranged, and the third unit foundation pit is horizontally arranged at the bottom of the second unit foundation pit.
The arch ring supporting system is characterized in that: the first unit foundation pit is communicated with the second unit foundation pit at the top, two adjacent second unit foundation pits are communicated with each other, and the third unit foundation pit is communicated with the second unit foundation pit at the bottom; the first unit foundation pit, the second unit foundation pit and the third unit foundation pit are identical in structure, and the cross sectional area of the first unit foundation pit, the cross sectional area of the second unit foundation pit and the cross sectional area of the third unit foundation pit are identical.
The arch ring supporting system is characterized in that: a plurality of first grouting holes are formed in the first reinforcing layer and are distributed along the circumferential direction of the oval foundation pit; a plurality of second grouting holes are formed in the second reinforcing layer and are distributed along the circumferential direction of the first reinforcing layer structure, and the second grouting holes and the first grouting holes are distributed in a quincunx shape; the structure sizes of the second grouting holes and the first grouting holes are the same, and the depth of the first grouting holes and the depth of the second grouting holes are larger than the depth of the oval foundation pit.
The arch ring supporting system is characterized in that: the vault supporting structure comprises a vault outer side supporting unit and a vault inner side supporting unit, wherein the vault outer side supporting unit is horizontally arranged on the ground, the vault inner side supporting unit is vertically arranged on the side wall of the first unit foundation pit, the vault outer side supporting unit and the vault inner side supporting unit are arranged along the circumferential direction of the first unit foundation pit, the vault outer side supporting unit and the vault inner side supporting unit are integrally formed, and the vault outer side supporting unit and the vault inner side supporting unit form the vault supporting structure with an L-shaped structure in cross section.
The arch ring supporting system is characterized in that: the arch ring side wall supporting structure comprises a plurality of arch ring side wall supporting units which are constructed at the bottom of the arch crown supporting structure and are continuously arranged, the inner side walls of the arch ring side wall supporting units are flush with the inner side walls of the arch crown inner side supporting units, the arch ring side wall supporting units are arranged on the side walls of the second unit foundation pits, and the number of the arch ring side wall supporting units is equal to that of the second unit foundation pits in a one-to-one correspondence mode.
The arch ring supporting system is characterized in that: the arch bottom supporting structure is arranged on the side wall of the third unit foundation pit, and the top of the arch bottom supporting structure is flush with the bottom of the lowermost arch ring side wall supporting unit; the width of the arch ring side wall supporting unit is equal to that of the arch crown inner side supporting unit, and the width of the arch bottom supporting structure is larger than that of the arch ring side wall supporting unit.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the waterproof curtain is poured on the outer side of the oval foundation pit, so that the underground water in the water-rich area is shielded, the underground water does not influence the arch ring structure, and the stability of the arch ring is not disturbed.
2. According to the utility model, the vault supporting structure and the arch bottom supporting structure are arranged to strengthen the supporting of the side wall of the arch ring, so that the supporting efficiency and the supporting time of the arch ring are improved.
3. According to the utility model, the arch crown supporting structure, the arch ring side wall supporting structure and the arch bottom supporting structure are combined to support the side wall of the oval foundation pit, so that the influence of peripheral unearthed soil on the subsequent construction in the oval foundation pit is prevented, and the construction efficiency is reduced.
In conclusion, the waterproof curtain is poured on the outer side of the oval foundation pit, so that the underground water in the water-rich area is shielded, the underground water does not influence the arch ring structure, and the stability of the arch ring is not disturbed; through setting up vault supporting construction with arch end supporting construction strengthens strutting to the lateral wall of arch ring, has improved the support efficiency of arch ring and when strutting.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic diagram of the position arrangement of the first grouting holes and the second grouting holes.
Fig. 2 is a schematic structural view of the arch ring supporting structure of the present invention.
Description of reference numerals:
1-trenchless soil body; 2-first grouting hole; 3-second grouting hole;
4, a first unit foundation pit; 7-second unit foundation pit; 9-a third unit foundation pit;
16-vault support structure; 17-arch ring side wall supporting unit; and 18, supporting structure of the arch bottom.
Detailed Description
As shown in fig. 1 and 2, the utility model comprises a double-layer waterproof curtain structure arranged outside an oval foundation pit and an arch ring supporting structure arranged in the oval foundation pit;
the double-layer waterproof curtain structure comprises a first reinforcing layer and a second reinforcing layer, wherein the first reinforcing layer is arranged on the outer side of the oval foundation pit, the second reinforcing layer is arranged on the outer side of the first reinforcing layer, the depth of the first reinforcing layer is equal to that of the second reinforcing layer, and the depth of the first reinforcing layer and the depth of the second reinforcing layer are both larger than that of the oval foundation pit;
the arch ring supporting structure comprises a vault supporting structure 16 arranged at the top of the oval foundation pit, an arch ring side wall supporting structure vertically arranged at the bottom of the vault supporting structure 16 and arranged on the side wall of the oval foundation pit, and an arch bottom supporting structure 18 arranged at the bottom of the oval foundation pit and arranged at the bottom of the arch ring side wall supporting structure; the arch crown supporting structure 16, the arch ring side wall supporting structure and the arch bottom supporting structure 18 form an arch ring supporting structure with a Z-shaped section.
During the in-service use, pour the stagnant water curtain through the outside at oval foundation ditch, play to the groundwater in rich water area and enclose the fender effect for groundwater does not cause the influence to the arch ring structure, does not cause the disturbance to the steadiness of arch ring.
The arch crown supporting structure 16 and the arch bottom supporting structure 18 are arranged to strengthen supporting of the side wall of the arch ring, and supporting efficiency and supporting duration of the arch ring are improved.
In addition, the arch crown supporting structure 16, the arch ring side wall supporting structure and the arch bottom supporting structure 18 are combined to support the side wall of the oval foundation pit, so that the influence of peripheral unearthed soil bodies 1 on subsequent construction in the oval foundation pit is prevented, and the construction efficiency is reduced.
In this embodiment, the oval foundation pit includes a first unit foundation pit 4 horizontally disposed, a plurality of second unit foundation pits 7 horizontally disposed at the bottom of the first unit foundation pit 4 and continuously disposed, and a third unit foundation pit 9 horizontally disposed at the bottom of the second unit foundation pit 7 at the lowest position.
It should be noted that, when the first unit foundation pit 4 is excavated, no load is applied to the top of the foundation pit. When each layer is dug to the depth of about 1.0m, temporary drainage ditches are arranged at the periphery, a temporary water collecting well is arranged at one corner of the foundation pit and is connected with the drainage ditches, and rainwater in the foundation pit is pumped out by a sewage pump; and excavating to a range of 30cm above the designed elevation of the substrate by adopting a manual matching machine to prevent the substrate from being disturbed by overexcavation.
In this embodiment, the first unit foundation pit 4 is communicated with the uppermost second unit foundation pit 7, two adjacent second unit foundation pits 7 are communicated with each other, and the third unit foundation pit 9 is communicated with the lowermost second unit foundation pit 7; the first unit foundation pit 4, the second unit foundation pit 7 and the third unit foundation pit 9 are identical in structure, and the cross sectional area of the first unit foundation pit 4, the cross sectional area of the second unit foundation pit 7 and the cross sectional area of the third unit foundation pit 9 are equal.
In actual use, in order to ensure the stability of the oval foundation pit, when the first unit foundation pit 4, the second unit foundation pit 7 and the third unit foundation pit 9 are excavated in several times, it is required to ensure that the cross-sectional area of the first unit foundation pit 4, the cross-sectional area of the second unit foundation pit 7 and the cross-sectional area of the third unit foundation pit 9 are all equal.
As shown in fig. 1, in this embodiment, a plurality of first grouting holes 2 are formed in the first reinforcing layer, and the plurality of first grouting holes 2 are arranged along the circumferential direction of the oval foundation pit; a plurality of second grouting holes 3 are formed in the second reinforcing layer, the second grouting holes 3 are distributed along the circumferential direction of the first reinforcing layer structure, and the second grouting holes 3 and the first grouting holes 2 are distributed in a quincunx shape; the structure sizes of the second grouting holes 3 and the first grouting holes 2 are the same, and the depths of the first grouting holes 2 and the second grouting holes 3 are larger than the depth of the oval foundation pit.
When the grouting device is actually used, the circumferential distance between the centers of two adjacent first grouting holes 2 is 1.2 m; the vertical distance between the center of the first grouting hole 2 and the side line of the oval foundation pit is 0.5 m; the circumferential distance between the centers of two adjacent second grouting holes 3 is 1.2 m; the vertical distance between the center of the first grout hole 2 and the center of the second grout hole 3 was 1.5 m. The depth of the second grouting holes 3 and the depth of the first grouting holes 2 are both larger than the depth of the oval foundation pit, and the depth is at least larger than 5 m. When grouting is performed in the first grouting hole 2 and the second grouting hole 3 by using a grouting machine, the cracks are filled with grout downwards, and the functions of reinforcement and water prevention are achieved.
As shown in fig. 2, in this embodiment, the arch top supporting structure 16 includes an arch top outer side supporting unit horizontally arranged on the ground and an arch top inner side supporting unit vertically arranged on the side wall of the first unit foundation pit 4, the arch top outer side supporting unit and the arch top inner side supporting unit are both arranged along the circumferential direction of the first unit foundation pit 4, the arch top outer side supporting unit and the arch top inner side supporting unit are integrally formed, and the arch top outer side supporting unit and the arch top inner side supporting unit form the arch top supporting structure 16 with an L-shaped cross section.
During the in-service use, pour the main effect of vault outside supporting unit is in order to strengthen supporting to the lateral wall of arch ring, and it is long when having improved the supporting efficiency and supporting of arch ring.
As shown in fig. 2, in this embodiment, the arch ring side wall supporting structure includes a plurality of arch ring side wall supporting units 17 that are constructed at the bottom of the arch top supporting structure 16 and are continuously arranged, the inner side walls of the arch ring side wall supporting units 17 are flush with the inner side walls of the arch top inner side supporting units, the arch ring side wall supporting units 17 are arranged on the side walls of the second unit foundation pits 7, and the number of the arch ring side wall supporting units 17 is equal to the number of the second unit foundation pits 7 and corresponds to one another.
During the in-service use, adopt reverse construction from last down to the arch ring lateral wall be under construction, prevent to cause the disturbance to existing building on every side, avoid appearing collapsing or gushing the water phenomenon, provide certain guarantee for the stability of arch ring.
As shown in fig. 2, in the present embodiment, the arch bottom supporting structure 18 is disposed on the side wall of the third unit foundation pit 9, and the top of the arch bottom supporting structure 18 is flush with the bottom of the lowermost arch ring side wall supporting unit 17; the width of the arch ring side wall supporting unit 17 is equal to that of the arch crown inner side supporting unit, and the width of the arch bottom supporting structure 18 is larger than that of the arch ring side wall supporting unit 17.
When the arch top supporting structure is used, the first reinforcing layer is poured on the outer side of the oval foundation pit, then the second reinforcing layer is poured on the outer side of the first reinforcing layer, after the first reinforcing layer and the second reinforcing layer are solidified, the first unit foundation pit 4 is excavated, a template and a steel bar assembly are erected at the joint of the first unit foundation pit 4 and the ground, and the arch top supporting structure 16 with the L-shaped section is formed after the pump truck is used for pouring; continuously excavating the second unit foundation pit 7 downwards after the template is removed, erecting a template and a steel bar assembly in the second unit foundation pit 7, and forming an arch ring side wall supporting unit 17 after pouring by using a pump truck; after a plurality of arch ring side wall supporting units 17 are poured, a third unit foundation pit 9 is excavated along the bottom of the lowermost arch ring side wall supporting unit 17, a template and a steel bar assembly are erected in the third unit foundation pit 9, an arch bottom supporting structure 18 is formed after the arch ring side wall supporting units are poured by a pump truck, and the arch ring supporting structure is obtained after the template is removed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. An arch ring supporting system, characterized in that: the waterproof curtain structure comprises a double-layer waterproof curtain structure arranged on the outer side of an oval foundation pit and an arch ring supporting structure arranged in the oval foundation pit;
the double-layer waterproof curtain structure comprises a first reinforcing layer and a second reinforcing layer, wherein the first reinforcing layer is arranged on the outer side of the oval foundation pit, the second reinforcing layer is arranged on the outer side of the first reinforcing layer, the depth of the first reinforcing layer is equal to that of the second reinforcing layer, and the depth of the first reinforcing layer and the depth of the second reinforcing layer are both larger than that of the oval foundation pit;
the arch ring supporting structure comprises a vault supporting structure (16) arranged at the top of the oval foundation pit, an arch ring side wall supporting structure which is vertically arranged at the bottom of the vault supporting structure (16) and is arranged on the side wall of the oval foundation pit, and an arch bottom supporting structure (18) which is arranged at the bottom of the oval foundation pit and is arranged at the bottom of the arch ring side wall supporting structure; the arch crown supporting structure (16), the arch ring side wall supporting structure and the arch bottom supporting structure (18) form an arch ring supporting structure with a Z-shaped section.
2. An arch ring support system according to claim 1, wherein: the oval foundation pit comprises a first unit foundation pit (4) which is horizontally arranged, a plurality of second unit foundation pits (7) which are horizontally arranged at the bottom of the first unit foundation pit (4) and are continuously arranged, and a third unit foundation pit (9) which is horizontally arranged at the bottom of the second unit foundation pit (7) at the lowest part.
3. An arch ring support system according to claim 2, wherein: the first unit foundation pit (4) is communicated with the second unit foundation pit (7) at the top, two adjacent second unit foundation pits (7) are communicated with each other, and the third unit foundation pit (9) is communicated with the second unit foundation pit (7) at the bottom; the first unit foundation pit (4), the second unit foundation pit (7) and the third unit foundation pit (9) are identical in structure, and the cross sectional area of the first unit foundation pit (4), the cross sectional area of the second unit foundation pit (7) and the cross sectional area of the third unit foundation pit (9) are equal.
4. An arch ring support system according to claim 1, wherein: a plurality of first grouting holes (2) are formed in the first reinforcing layer, and the first grouting holes (2) are distributed along the circumferential direction of the oval foundation pit; a plurality of second grouting holes (3) are formed in the second reinforcing layer, the second grouting holes (3) are distributed along the circumferential direction of the first reinforcing layer structure, and the second grouting holes (3) and the first grouting holes (2) are distributed in a quincunx shape; the structure sizes of the second grouting holes (3) and the first grouting holes (2) are the same, and the depths of the first grouting holes (2) and the second grouting holes (3) are larger than the depth of the oval foundation pit.
5. An arch ring support system according to claim 3, wherein: the vault supporting structure (16) comprises a vault outer side supporting unit and a vault inner side supporting unit, wherein the vault outer side supporting unit is horizontally arranged on the ground, the vault inner side supporting unit is vertically arranged on the side wall of the first unit foundation pit (4), the vault outer side supporting unit and the vault inner side supporting unit are arranged along the circumferential direction of the first unit foundation pit (4), the vault outer side supporting unit and the vault inner side supporting unit are integrally formed, and the vault outer side supporting unit and the vault inner side supporting unit form a vault supporting structure (16) with an L-shaped structure in section.
6. An arch ring support system according to claim 5, wherein: the arch ring side wall supporting structure comprises a plurality of arch ring side wall supporting units (17) which are constructed at the bottom of the arch crown supporting structure (16) and are continuously arranged, the inner side wall of each arch ring side wall supporting unit (17) is flush with the inner side wall of each arch crown inner side supporting unit, each arch ring side wall supporting unit (17) is arranged on the side wall of each second unit foundation pit (7), and the number of the arch ring side wall supporting units (17) is equal to that of the second unit foundation pits (7) and corresponds to that of the second unit foundation pits (7) one by one.
7. An arch ring support system according to claim 6, wherein: the arch bottom supporting structure (18) is arranged on the side wall of the third unit foundation pit (9), and the top of the arch bottom supporting structure (18) is flush with the bottom of the lowermost arch ring side wall supporting unit (17); the width of the arch ring side wall supporting unit (17) is equal to that of the arch crown inner side supporting unit, and the width of the arch bottom supporting structure (18) is larger than that of the arch ring side wall supporting unit (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123359933.4U CN216615879U (en) | 2021-12-27 | 2021-12-27 | Arch ring supporting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123359933.4U CN216615879U (en) | 2021-12-27 | 2021-12-27 | Arch ring supporting system |
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| Publication Number | Publication Date |
|---|---|
| CN216615879U true CN216615879U (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123359933.4U Active CN216615879U (en) | 2021-12-27 | 2021-12-27 | Arch ring supporting system |
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| Country | Link |
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| CN (1) | CN216615879U (en) |
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2021
- 2021-12-27 CN CN202123359933.4U patent/CN216615879U/en active Active
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