CN218521804U - Pile wall supporting system for engineering space overlapping part - Google Patents
Pile wall supporting system for engineering space overlapping part Download PDFInfo
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- CN218521804U CN218521804U CN202222874950.XU CN202222874950U CN218521804U CN 218521804 U CN218521804 U CN 218521804U CN 202222874950 U CN202222874950 U CN 202222874950U CN 218521804 U CN218521804 U CN 218521804U
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Abstract
The utility model discloses a stake wall support system for engineering space overlaps department belongs to the foundation ditch construction field, it is through utilizing underground continuous wall as the carrier, insert the pile body unit in the wall body, and then form the stake wall supporting construction of combination formula, compare with current with subway enclosure wall top elevation lifting to ground elevation, the later stage method of chiseling the part enclosure wall above the iron-based hole bottom, the engineering cost has been saved, and construction convenience is swift, the integrated configuration wholeness is good, can satisfy stability and security requirement. The utility model discloses a system is strutted to stake wall for engineering space overlapping department, its utilize in the enclosure pile of spatial position cross section and the enclosure wall of earlier implementation pass through the reinforcing bar and link to each other to adopt concrete placement to be a whole, traditional support system in the reunion, can guarantee that whole combination supporting construction satisfies stability and security requirement, thereby effectively solve the difficult problem that can't implement at spatial position cross section enclosure pile, have good economic nature and practicality.
Description
Technical Field
The utility model belongs to the foundation ditch construction field, concretely relates to a stake wall support system for engineering space overlaps department.
Background
With the rapid development of underground space technology, large-scale comprehensive transportation hub projects integrating various transfer modes such as high-speed railways, inter-city railways, rail transportation and the like are more and more, the design interfaces among foundation pit groups are more and more complex, the depth of foundation pits is different, and the foundation pits are mutually overlapped, criss-cross and mutually influenced in the plane, time and space.
Nowadays, for the conventional large-scale comprehensive transportation hub engineering at present, subway foundation pits are often overlapped in a crossed manner in space within the range of national railway station house foundation pits. Generally, the excavation depth of a foundation pit of a national railway station house is relatively shallow, a bored pile is usually adopted for enclosure, the excavation depth of the foundation pit of a subway is relatively deep, an underground diaphragm wall is usually adopted for enclosure, when subway foundation pit engineering is implemented in advance, if the elevation of the top of the wall of the subway enclosure wall is designed to be the same as the elevation of the ground, the construction cost of the foundation pit is higher, and the enclosure wall above the bottom of the national railway pit needs to be chiseled out at the later stage, so that the chiseling difficulty is high, and engineering waste is caused.
Therefore, how to effectively coordinate the foundation pit enclosure operation of two single projects in the vertical space during construction under the condition of controlling the construction cost is one of the difficulties which puzzles numerous projects nowadays.
SUMMERY OF THE UTILITY MODEL
To the above defect of prior art or improve in the demand one or more, the utility model provides a stake wall support system for engineering space overlaps department, its underground continuous wall that utilizes the bottom is the carrier to its top sets up a plurality of pile body units and forms envelope, and the enclosure requirement of pit construction when crisscross, overlapping on vertical space with two engineerings.
In order to achieve the purpose, the utility model provides a pile-wall supporting system for the engineering space overlapping part, which is used for the foundation pit supporting operation of the overlapping and crossing part of two engineering in the vertical space position, and is characterized in that the pile-wall supporting system comprises a plurality of pile body units which are continuously arranged at intervals;
and part or all of the pile body units are inserted into a wall body in the bottom engineering and combined to form a supporting structure to support the edge of the foundation pit.
As a further improvement of the present invention, the pile unit has a plurality of, a plurality of intervals arranged on the same horizontal line.
As a further improvement of the utility model, a plurality of pile body units are arranged along the horizontal longitudinal direction or the horizontal direction; and is provided with
And the guardrail formed by the pile body units is orthogonal, oblique or parallel to the length direction of the wall body.
As a further improvement of the present invention, the pile body unit is a precast pile, which is assembled on the wall body; and the depth of the pile inserted into the wall body is not less than four times of the pile diameter.
As a further improvement of the present invention, the pile body unit is a bored pile, which is integrally formed with the wall body.
As a further improvement of the utility model, the wall body is an underground continuous wall.
The above-described improved technical features may be combined with each other as long as they do not conflict with each other.
Generally, through the utility model above technical scheme who conceives compares with prior art, the beneficial effect who has includes:
(1) The utility model discloses a stake wall support system for engineering space overlaps department, it is through utilizing underground continuous wall as the carrier, insert the wall body unit in, and then form the stake wall supporting construction of combination formula, with present with subway enclosure wall top elevation lifting to ground elevation, later stage chisel remove the method of the above part enclosure wall of state iron base bottom of the pit compare, engineering cost has been saved, and construction convenience is swift, the integrated configuration wholeness is good, can satisfy stability and security requirement.
(2) The utility model discloses a system is strutted to stake wall for engineering space overlaps department, it is through precast pile and bored concrete pile, two kinds of different pile body cell cube installation forms to satisfy the construction demand under the different work condition, improve the practicality of this supporting construction in the in-service use with this.
(3) The utility model discloses a system is strutted to stake wall for engineering space overlapping department, its utilize in the enclosure pile of spatial position cross section and the enclosure wall of earlier implementation pass through the reinforcing bar and link to each other to adopt concrete placement to be a whole, traditional support system in the reunion, can guarantee that whole combination supporting construction satisfies stability and security requirement, thereby effectively solve the difficult problem that can't implement at spatial position cross section enclosure pile, have good economic nature and practicality.
Drawings
Fig. 1 is an overall top view structural schematic diagram of a supporting system in the embodiment of the present invention;
fig. 2 is a schematic view of the overall axial structure of the supporting system in the embodiment of the present invention;
fig. 3 is a schematic top view of a single wall and pile unit of the support system according to the embodiment of the present invention;
fig. 4 is a schematic front view of a bored pile unit of a support system according to an embodiment of the present invention;
fig. 5 is a schematic axial view of the wall and a plurality of pile units of the supporting system according to the embodiment of the present invention;
fig. 6 is a schematic axial view of the wall and a single pile unit of the supporting system in the embodiment of the present invention;
throughout the drawings, like reference numerals designate like features, and in particular: 100. a wall body; 200. and (3) a pile body unit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
The embodiment is as follows:
referring to fig. 1 to 6, the pile-wall support system for engineering space overlapping in the preferred embodiment of the present invention is mainly used for the situation that construction is difficult due to vertical space problems when multiple foundation pit groups are overlapped and staggered vertically and horizontally, for example, "the wall top elevation of the subway enclosure wall is equal to the bottom elevation of the iron-based pit, at this time, the upper portion is excavated by slope-making, so that the foundation pit enclosure pile of the iron station house at the space position intersection will face the situation that cannot be implemented", the wall at the bottom is used as a carrier, and the part of the pile unit is inserted into the wall, so as to fix the pile unit in the wall, thereby effectively solving the problem that the enclosure pile at the space position intersection cannot be implemented.
Particularly, the utility model discloses a stake wall support system for engineering space overlapping department in the preferred embodiment, it includes a plurality of pile body units that set up in succession, and its part or whole insert the wall body that the bottom was as basic engineering, and then stake wall support system supports the foundation ditch.
Further, it should be noted that the wall and the pile unit are basically two different single projects, and the two single projects are orthogonal or oblique in spatial position, and the project to which the wall belongs is implemented before the project to which the pile unit belongs, or implemented simultaneously. Compared with the existing method for lifting the top elevation of the subway enclosure wall to the ground elevation and chiseling the enclosure wall above the bottom of the national iron foundation pit in the later period, the method saves the construction cost, is convenient and quick to construct, has good integrity of a combined structure, can meet the requirements of stability and safety, is different from the arrangement form of the traditional wall and the pile body unit, and has fundamental difference in the combination principle.
Furthermore, in the actual setting process, there are a plurality of pile units, and in this case, the extending direction of the guardrail formed by the plurality of pile units is flush with the extending direction of the wall body, as shown in fig. 1. It can be understood that when setting up through this kind of mode, it need not to reset the bottom that the pile body unit strutted, directly utilizes the wall body as the bottom carrier of pile body unit, inserts a plurality of pile body units in proper order in the wall body, can realize the installation operation of whole guardrail structure.
In another specific embodiment, as shown in fig. 1, in this case, the extending direction of the guardrail is orthogonal to the extending direction of the wall, only one pile unit in the guardrail is inserted into the wall corresponding to the setting position, and other pile units can be installed in a conventional arrangement mode.
It can be understood that the number of the pile units inserted into the wall body is determined according to the spatial positions of the pile units and the wall body, and the specific number of the pile units can be flexibly adjusted according to the construction site, and is not particularly limited herein.
In the actual setting process, the pile body unit can be a precast pile or a cast-in-situ bored pile.
In a specific embodiment, when the pile body unit is a precast pile, a retarder is doped into the concrete of the wall body when the pile body unit is installed, the precast pile is inserted into the lower wall body before the precast pile is initially set, and then the installation between the pile body unit and the wall body is realized, wherein the insertion depth meets the requirement that the pile diameter of the precast pile is not less than four times.
In another specific embodiment, when the pile unit is a cast-in-situ bored pile, the wall and the pile unit are respectively provided with a first main reinforcement and a second main reinforcement, a reinforcement cage of the pile unit is fixed with a reinforcement cage of a lower wall through a erection reinforcement, the erection reinforcement generally adopts phi 12 to 16 reinforcements, and the lap joint length L of the main reinforcements at the joints is equal to 3 And the distance is not less than 4d, the hoisting rings are integrally hoisted in place through the lower wall body, and are cast into a whole through concrete, so that the whole is stressed.
In one specific embodiment, the wall has a thickness D and a single width L 1 (ii) a The diameter of the pile body unit is d, and the length of the pile body unit embedded into the lower wall body is L 3 (ii) a The excavation depth of the iron-based pit of the country to which the pile body unit belongs is H 1 The excavation depth of the subway foundation pit to which the wall body belongs is H 2 Generally, D is taken to be 4 to 6m 1 Taking the mixture of 0.6 to 1.2m 3 ≥4d，d<D and the requirement of the lap joint space of the reinforcement cage, H 2 ＞H 1 And generally has a height difference of 8 to 10m.
Furthermore, the utility model discloses still can be suitable for and accomplish construction preparation work such as place flattening at subway foundation ditch engineering, underground continuous wall, steel reinforcement cage have accomplished the preparation and have not hoisted yet, close on the national railway station room and plan to implement the excavation to operating mode such as drilling fender post is executed.
Meanwhile, the pile-wall supporting structure in the preferred embodiment can also be applied to projects in which deep permeable layers exist at the middle lower part of a foundation pit and conventional water stopping piles cannot meet the seepage prevention requirement, the upper pile body unit can effectively retain soil, the lower wall body can effectively seal water, the advantages of the combined structure are fully played, and the economical efficiency is good.
In the embodiment shown in fig. 1, the construction method of the pile-wall supporting structure of the present invention specifically includes:
s100: arranging a plurality of pile body units along the edge position of the foundation pit, if the pile body units are positioned on the same vertical plane with the wall body, entering the step S200, otherwise, entering the step S300;
s200: and (4) mounting the pile body unit to the wall, and ensuring that the top height of the pile body unit is flush with the heights of other pile body units.
Further specifically, in the actual setting process, different pile units and installation forms thereof can be selected according to different construction site conditions. The method specifically comprises the following steps:
when the pile body unit is a precast pile. And (3) adding a retarder into the wall concrete, inserting the precast pile into the lower wall before initial setting of the precast pile, and further completing the combined installation operation of the pile unit and the wall. Further preferably, the insertion depth of the prefabricated pile is not less than four times of the pile diameter of the prefabricated pile.
When the pile body unit is a cast-in-place pile, the pile body unit steel reinforcement cage is fixed with the lower wall body steel reinforcement cage through the erection ribs, the lower wall body is integrally hoisted and aligned through the hoisting rings and the hoisting equipment, and the lower wall body is cast into a whole through concrete, so that the combined installation operation of the pile body unit and the wall body is completed.
S300: and (4) arranging the pile body units according to a conventional mode, and constructing a lateral support system of the foundation pit.
The embodiment of the utility model provides an in be used for the stake wall support system of engineering space overlapping department, utilize the enclosure pile at spatial position cross section to pass through the reinforcing bar with the enclosure wall of earlier implementation and link to each other to adopt concrete placement to be a whole, traditional support system in the reunion can guarantee that whole combination supporting construction satisfies stability and security requirement, thereby effectively solve the difficult problem that can't implement at spatial position cross section enclosure pile, have good economic nature and practicality.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A pile-wall supporting system for an engineering space overlapping part is used for foundation pit supporting operation of two projects at the overlapping and crossing positions of vertical space positions and is characterized by comprising a plurality of pile body units which are continuously arranged at intervals;
and part or all of the pile body units are inserted into a wall body in the bottom engineering and combined to form a supporting structure to support the edge of the foundation pit.
2. The pile-wall supporting system for the overlap of engineering spaces according to claim 1, wherein a plurality of said pile units are all inserted into the wall body, and the supporting system formed by the pile units is parallel to the longitudinal extension direction of the wall surface.
3. The pile-wall support system for the overlap of engineering spaces according to claim 1, wherein a part of said pile units are inserted into said wall body, and the support system formed by the pile units is perpendicular to or crossed with the longitudinal extension direction of the wall surface.
4. The pile-wall supporting system for the engineering space overlapping part according to any one of claims 1 to 3, wherein the pile body unit is a precast pile which is assembled on the wall body.
5. The pile-wall supporting system for the engineering space overlapping part according to any one of claims 1 to 3, wherein the pile body unit is a cast-in-situ bored pile which is integrally formed with the wall body.
6. The pile-wall support system for the overlap of engineering spaces according to claim 5, wherein the reinforcement cage inside the pile body unit is connected with the reinforcement cage inside the wall body and is integrally formed by concrete casting.
7. The pile-wall support system for an overlap of a construction space of claim 1, wherein the pile body unit is inserted into the wall body to a depth of not less than four pile diameters.
8. A pile-wall support system for an overlap of engineering spaces according to claim 1, characterised in that the wall is an underground continuous wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222874950.XU CN218521804U (en) | 2022-10-31 | 2022-10-31 | Pile wall supporting system for engineering space overlapping part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222874950.XU CN218521804U (en) | 2022-10-31 | 2022-10-31 | Pile wall supporting system for engineering space overlapping part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218521804U true CN218521804U (en) | 2023-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222874950.XU Active CN218521804U (en) | 2022-10-31 | 2022-10-31 | Pile wall supporting system for engineering space overlapping part |
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| Country | Link |
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| CN (1) | CN218521804U (en) |
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2022
- 2022-10-31 CN CN202222874950.XU patent/CN218521804U/en active Active
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