CN213204139U - Cantilever combined soil retaining structure for sinking square - Google Patents
Cantilever combined soil retaining structure for sinking square Download PDFInfo
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- CN213204139U CN213204139U CN202020961097.3U CN202020961097U CN213204139U CN 213204139 U CN213204139 U CN 213204139U CN 202020961097 U CN202020961097 U CN 202020961097U CN 213204139 U CN213204139 U CN 213204139U
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Abstract
The utility model discloses a cantilever combination retaining structure for square sinks, including fender pile and reinforced concrete retaining wall the top of fender pile is equipped with the cap roof beam, reinforced concrete retaining wall takes root in the structure bottom plate, the structure bottom plate supports the inboard bottom of fender pile, reinforced concrete retaining wall is equipped with the bottom and adds the armpit the top of reinforced concrete retaining wall is equipped with retaining wall top hidden beam, retaining wall top hidden beam pass through reinforced concrete drawknot board with the cap roof beam links together reinforced concrete retaining wall with the light concrete entity has been pour between the fender pile the middle part of reinforced concrete retaining wall is equipped with the crack control position it encrypts horizontal muscle to increase in the crack control position. The utility model discloses the bulk rigidity is big, and the coordination ability is strong in the deformation, and the construction is simple and convenient, can solve the limited scheduling problem of square border retaining wall cantilever height that sinks big, retaining structure thickness to can effectively reduce engineering cost.
Description
Technical Field
The utility model belongs to the technical field of building engineering, in particular to cantilever combination retaining structure for square sinks.
Background
With the rapid development of economic construction in China, the utilization of urban space is not limited to the ground, and the urban space develops underground, in the air and at the bottom of the water. The development and utilization of the underground space can solve the problems of urban land utilization, traffic jam, full utilization of urban land resources and the like. The construction of traffic facilities such as underground pedestrian passageways, underground loops and the like is beneficial to shunting crowds and public traffic crowded on the ground. Therefore, the development and utilization of large underground spaces are receiving more and more attention.
The sinking square is an important junction organically connecting each subarea of the underground space, and has the most remarkable characteristic that no structural top plate is arranged, the retaining walls of the periphery are in a cantilever state, and the height of the retaining walls can reach more than ten meters. Meanwhile, due to the limit value of the ground red line, the thickness occupied by the soil retaining structure is limited in a certain range, and extremely high requirements are provided for the design of the soil retaining structure. In the conventional design, the foundation pit support and the structural design are mutually independent and separated, and after excavation is finished, the foundation pit support member is scrapped and is not utilized. How to solve the problem of high cantilever soil retaining in a limited space reasonably, economically and effectively is an engineering problem needing elaborate research by technicians.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the technical problem that exists among the known technology and provide a cantilever combination retaining structure for sinking square, this cantilever combination retaining structure's bulk rigidity is big, and the coordination ability that warp is strong, and the construction is simple and convenient, can solve the square border retaining wall cantilever height that sinks big, the limited scheduling problem of retaining structure thickness to can effectively reduce engineering cost.
The utility model discloses a solve the technical scheme that technical problem that exists among the well-known technique took and be: a cantilever combined retaining structure for a sinking square comprises a supporting pile and a reinforced concrete retaining wall, wherein a cap beam is arranged at the top of the supporting pile, the reinforced concrete retaining wall takes root on a structural bottom plate, the structural bottom plate is supported at the bottom of the inner side of the supporting pile, the reinforced concrete retaining wall is provided with a bottom haunch, a retaining wall top hidden beam is arranged at the top of the reinforced concrete retaining wall, the retaining wall top hidden beam is connected with the cap beam through a reinforced concrete drawknot plate, a light concrete entity is poured between the reinforced concrete retaining wall and the supporting pile, an anti-cracking part is arranged in the middle of the reinforced concrete retaining wall, and a densified horizontal rib is additionally arranged in the anti-cracking part.
On the basis of the above scheme, the utility model discloses following improvement has still been made:
the interval between the encrypted horizontal ribs is 30-50 mm, and the diameter of each encrypted horizontal rib is 2-4 mm larger than that of each horizontal distribution rib of the retaining wall.
And additional reinforcing steel bars extending in the direction of the inclined plane are arranged in the armpit at the bottom of the reinforced concrete retaining wall.
The distance between the additional steel bars in the bottom haunch of the reinforced concrete retaining wall is 100-150 mm, and the diameter is 16-20 mm.
And building railing embedded steel plates are arranged at the tops of the hidden beams at the tops of the retaining walls.
The utility model has the advantages and positive effects that: the supporting pile components in foundation pit supporting are fully utilized, the cantilever combined retaining structure is provided with a reinforced concrete drawknot plate at the top of the supporting pile and the reinforced concrete retaining wall, the bottom enables the structural bottom plate and the cushion layer to extend to the supporting pile to be tightly propped, and the bottom of the supporting pile is laterally supported, so that the supporting pile is effectively connected with the reinforced concrete retaining wall, and the supporting pile and the reinforced concrete retaining wall are cooperatively stressed to commonly bear lateral soil pressure and enhance the integral rigidity and deformation coordination capacity of the retaining structure; light concrete is filled between the retaining wall and the retaining wall, so that the lateral load of the retaining wall is reduced. The construction is simple and convenient, can solve the high cantilever retaining wall thickness in the square that sinks of underground space big, the arrangement of reinforcement is big, there is potential safety and hidden danger of leaking, the limited scheduling problem of retaining structure thickness, can effectively reduce engineering cost, and simple structure, reasonable can guarantee to make up retaining structure's wholeness and security.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is the detailed view of the anti-cracking part of the reinforced concrete retaining wall of the utility model.
In the figure: 1-support piles, 2-cap beams, 3-cushion layers, 4-structural bottom plates, 5-reinforced concrete retaining walls, 6-lightweight concrete bodies, 7-reinforced concrete tie plates, 8-retaining wall vertical distribution ribs, 9-retaining wall horizontal distribution ribs, 10-retaining wall tie ribs, 11-encrypted parts, 12-retaining wall top hidden beams, 13-building railing embedded steel plates, 14-wall bottom haunch, 15-additional steel bars and 16-encrypted horizontal ribs.
Detailed Description
For further understanding of the contents, features and effects of the present invention, the following embodiments are exemplified in conjunction with the accompanying drawings as follows:
referring to fig. 1 and 2, a cantilever combined retaining structure for a sinking square includes a supporting pile 1 and a reinforced concrete retaining wall 5, a cap beam 2 is disposed on the top of the supporting pile 1, the reinforced concrete retaining wall 5 is rooted on a structural bottom plate 4, the structural bottom plate 4 is supported on the bottom of the inner side of the supporting pile 1, the reinforced concrete retaining wall 5 is provided with a wall bottom haunch 14, a retaining wall top hidden beam 12 is disposed on the top of the reinforced concrete retaining wall 5, the retaining wall top hidden beam 12 is connected with the cap beam 2 through a reinforced concrete tie plate 7, a lightweight concrete body 6 is poured between the reinforced concrete retaining wall 5 and the supporting pile 1, an anti-cracking portion 11 is disposed in the middle of the reinforced concrete retaining wall 5, and a reinforcing horizontal rib 16 is additionally disposed in the anti-cracking portion 11.
More specific description is as follows:
the supporting piles 1, the cap beams 2 and the reinforced concrete retaining wall 5 are effectively tied through the bottom plate 4, the reinforced concrete tie plates 7 and the filled lightweight concrete bodies 6, so that the supporting piles 1 and the reinforced concrete retaining wall 5 are stressed in a coordinated mode, and the overall rigidity and deformation coordination capacity of the retaining structure are enhanced. The support piles 1 can be reinforced concrete cast-in-place piles, are support members used for foundation pit support and are formed by the reinforced concrete cast-in-place piles with certain diameters at certain intervals; the cap beam 2 is a cast-in-place reinforced concrete beam at the top of the support pile and aims to strengthen the top connection between the support piles; the two are combined with a waterproof curtain outside the support pile 1 to form a soil retaining and water stopping system of the foundation pit support. The reinforced concrete retaining wall 5 is a cast-in-place reinforced concrete member, the reinforcing bars of the reinforced concrete retaining wall are composed of retaining wall vertical distribution ribs 8, retaining wall horizontal distribution ribs 9, retaining wall tie bars 10 and the like, the retaining wall tie bars are rooted at the bottom plate, the elevation of the wall top of the retaining wall is higher than the ground on one side of the retaining wall by a certain height, and the top of the retaining wall is provided with a building railing embedded steel plate 13. The junction of the bottom of the reinforced concrete retaining wall 5 and the structural bottom plate 4 is provided with a wall bottom haunch 14, and an additional reinforcing steel bar 15 is arranged in the wall bottom haunch, so that the bottom bending resistance can be enhanced. An anti-cracking part is arranged at a set height position in the middle of the reinforced concrete retaining wall 5, and the encrypted horizontal ribs 16 are additionally arranged, so that the generation and development of cracks can be effectively inhibited. The junction of the top of the reinforced concrete retaining wall 5 and the reinforced concrete drawknot plate 7 is provided with a retaining wall top hidden beam 12 for reinforcing the drawknot between the top of the reinforced concrete retaining wall 5 and the top of the cap beam 2. The structural bottom plate 4 is a cast-in-place reinforced concrete member, extends to the support pile and provides effective bottom support for the support pile. The lightweight concrete entity 6 is a filler between the support pile 1 and the reinforced concrete retaining wall 5, can be independently formed, has light dead weight and enough strength, can transmit horizontal load, reduces the lateral pressure of the reinforced concrete retaining wall 5, and can effectively transmit the horizontal load transmitted by the support pile to the reinforced concrete retaining wall 5. The reinforced concrete drawknot plate 7 is a cast-in-place reinforced concrete slab and is arranged on the top of the support pile cap beam 2 and the reinforced concrete retaining wall 5 to effectively draw the support pile cap beam and the reinforced concrete retaining wall together so as to enable the support pile cap beam and the reinforced concrete retaining wall to be stressed cooperatively.
In this embodiment, the distance between the encrypted horizontal ribs 16 is 30-50 mm, and the diameter of each encrypted horizontal rib is 2-4 mm larger than that of the horizontal distribution ribs 9 of the retaining wall. The reinforced concrete retaining wall 5 is provided with additional reinforcing steel bars 15 extending along the inclined plane direction in the wall bottom haunch 14. The distance between the additional steel bars 15 in the wall bottom haunch 14 of the reinforced concrete retaining wall 5 is 100-150 mm, and the diameter is 16-20 mm. And a building railing embedded steel plate 13 is arranged at the top of the hidden beam 12 at the top of the retaining wall so as to facilitate the subsequent installation of building railings.
The construction process of the cantilever combined soil retaining structure comprises the following steps:
1) the supporting piles 1 and the cap beams 2 are combined with waterproof curtains outside the supporting piles to form a foundation pit supporting system, and construction is finished before earth excavation.
2) And after the earthwork excavation is finished, pouring a cushion layer 3, wherein the cushion layer 3 extends to the support pile.
3) And constructing a structural bottom plate 4, wherein the structural bottom plate 4 extends to the support piles 1 and is used as a support of the support piles 1 together with the cushion layer 3.
4) And constructing the reinforced concrete retaining wall 5, arranging an armpit 14 at the bottom of the wall, an anti-cracking part 11 and a hidden beam 12 at the top of the retaining wall, and pre-embedding a building railing pre-embedded steel plate 13 in the hidden beam 12 at the top of the retaining wall in advance.
5) According to the required elevation of design scheme at reinforced concrete drawknot board 7, in cap beam 2 department bar planting, the muscle is got rid of in reinforced concrete retaining wall top hidden beam 12 simultaneously.
6) And pouring lightweight concrete between the support piles 1 and the reinforced concrete retaining wall 5 to the height of the lower skin of the reinforced concrete tie plate 7.
7) And binding the double-layer bidirectional steel bars of the reinforced concrete tie plate 7, and then pouring concrete.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is within the scope of the present invention.
Claims (5)
1. A cantilever combined retaining structure for a sinking square comprises a supporting pile and a reinforced concrete retaining wall, wherein a cap beam is arranged at the top of the supporting pile, and the cantilever combined retaining structure is characterized in that the reinforced concrete retaining wall takes root on a structural bottom plate, the structural bottom plate is supported at the bottom of the inner side of the supporting pile, the reinforced concrete retaining wall is provided with a bottom haunch, a retaining wall top hidden beam is arranged at the top of the reinforced concrete retaining wall, the retaining wall top hidden beam is connected with the cap beam through a reinforced concrete drawknot plate, a light concrete entity is poured between the reinforced concrete retaining wall and the supporting pile, an anti-cracking part is arranged in the middle of the reinforced concrete retaining wall, and a strengthening horizontal rib is additionally arranged in the anti-cracking part.
2. The cantilever combined soil retaining structure for the sinking square according to claim 1, wherein the distance between the encrypted horizontal ribs is 30-50 mm, and the diameter of the encrypted horizontal ribs is 2-4 mm larger than that of the horizontal distribution ribs of the retaining wall.
3. The cantilever combination soil retaining structure for a sinking square according to claim 1, wherein additional reinforcing bars extending in the direction of the inclined surface thereof are provided in the bottom haunch of the reinforced concrete soil retaining wall.
4. The cantilever combined soil retaining structure for a sinking square according to claim 3, wherein the distance between the additional steel bars in the bottom haunch of the reinforced concrete soil retaining wall is 100-150 mm, and the diameter is 16-20 mm.
5. The cantilever combined soil retaining structure for sinking plaza according to claim 1, wherein a building railing pre-buried steel plate is provided on the top of the hidden beam on the top of the soil retaining wall.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020961097.3U CN213204139U (en) | 2020-05-29 | 2020-05-29 | Cantilever combined soil retaining structure for sinking square |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020961097.3U CN213204139U (en) | 2020-05-29 | 2020-05-29 | Cantilever combined soil retaining structure for sinking square |
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| CN213204139U true CN213204139U (en) | 2021-05-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653099A (en) * | 2021-08-18 | 2021-11-16 | 中国建筑第八工程局有限公司 | Basement structure and construction method thereof |
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2020
- 2020-05-29 CN CN202020961097.3U patent/CN213204139U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653099A (en) * | 2021-08-18 | 2021-11-16 | 中国建筑第八工程局有限公司 | Basement structure and construction method thereof |
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