CN212294679U - Combined lattice column-concrete precast pile inclined support structure - Google Patents
Combined lattice column-concrete precast pile inclined support structure Download PDFInfo
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- CN212294679U CN212294679U CN202020798345.7U CN202020798345U CN212294679U CN 212294679 U CN212294679 U CN 212294679U CN 202020798345 U CN202020798345 U CN 202020798345U CN 212294679 U CN212294679 U CN 212294679U
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- concrete precast
- precast pile
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- foundation pit
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- 239000004567 concrete Substances 0.000 title claims abstract description 63
- 239000002689 soil Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 4
- 238000007906 compression Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 10
- 239000011178 precast concrete Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model provides a diagonal bracing structure of a combined lattice column-concrete precast pile, which is used for supporting a foundation pit, wherein a fender post is arranged on one side of the foundation pit, and the diagonal bracing structure of the combined lattice column-concrete precast pile is driven into the soil at a preset angle before the foundation pit is excavated; the combined lattice column-concrete precast pile inclined support structure is composed of a concrete precast pile and a lattice column which are coaxially connected, the concrete precast pile is integrally positioned in the soil below the bottom surface of a foundation pit, the bottom end of the lattice column is fixedly connected with the top end of the concrete precast pile, and the top end of the lattice column is fixedly connected with a ring beam at the top of a fender post. The utility model discloses make foundation ditch fender post, lattice column, concrete precast pile form bearing diagonal supporting structure jointly, the lattice column above the foundation ditch bottom surface has good resistance to compression, bending resistance and resistance to compression and yield performance, and the concrete precast pile below the foundation ditch bottom surface can provide great side friction resistance and end resistance, and the cost is saved to the recoverable recycling of lattice column above the bottom plate simultaneously.
Description
Technical Field
The utility model relates to a building engineering technical field, concretely relates to modular lattice column-concrete precast pile's bearing diagonal structure.
Background
The increasingly rapid urbanization process and increasingly tense urban land make urban underground space development projects more and more, and the accompanying construction of a foundation pit support is particularly important. Particularly in soft Soil areas, the Soil property is extremely poor, the traditional foundation pit supporting method mainly comprises a cast-in-place pile, an SMW (Soil Mixing Wall, a novel cement-Soil Mixing pile Wall, namely, H-shaped steel is inserted into a cement-Soil pile) construction method and the like, the existing cast-in-place pile and SMW construction method and the like need to be combined with horizontal support, and the problems of inconvenient engineering excavation, long construction period, increased construction cost and the like are caused by the horizontal support. For solving this problem and considering based on the cost, the utility model provides a modular lattice column-precast concrete pile's bearing diagonal structure uses modular bearing diagonal to replace the horizontal brace, realizes that the excavation is convenient, reduction time limit for a project, purposes such as reduce cost and green.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the engineering that traditional horizontal support leads to dig inconvenience, the time limit for a project is longer, the cost increases the scheduling problem, provide a modular lattice column-precast concrete pile bearing diagonal foundation ditch retaining structure, its mechanical properties is good, construction facility, reduction of erection time, and reduce cost.
The utility model discloses the purpose is realized accomplishing by following technical measure:
the combined lattice column-concrete precast pile inclined support structure is used for supporting a foundation pit, a fender post is arranged on one side of the foundation pit, and the inclined support structure of the combined lattice column-concrete precast pile is driven into the soil at a preset angle before the foundation pit is excavated;
the combined lattice column-concrete precast pile inclined support structure is composed of a concrete precast pile and a lattice column which are coaxially connected, the concrete precast pile is integrally located in soil below the bottom surface of a foundation pit, the bottom end of the lattice column is fixedly connected with the top end of the concrete precast pile, and the top end of the lattice column is fixedly connected with a ring beam at the top of a fender post.
Further, the preset angle is an included angle of 30-60 degrees with the horizontal plane.
Further, the preset angle is 45 °.
Further, the cross section of the concrete precast pile is circular or polygonal, and a tip end is arranged at the bottom end of the concrete precast pile.
Furthermore, one end of the lattice column and the concrete precast pile are connected together through a connecting piece or pouring.
Furthermore, the connecting piece is a connecting steel plate, and two ends of the connecting steel plate are fixedly connected with the concrete precast pile and the lattice column through welding or flanges.
Furthermore, a basement bottom plate is arranged on the bottom surface of the foundation pit, and a water stop sheet is arranged at the position where the lattice column penetrates through the basement bottom plate.
Further, the ring beam is formed through pouring, and the top end of the lattice column is poured into the ring beam.
The utility model has the advantages that: this integrated configuration makes foundation ditch fender post, lattice column, concrete precast pile have formed bearing diagonal support supporting construction jointly, and the lattice column above the foundation ditch bottom surface has good resistance to compression, bending resistance and resistance to compression and bending performance, and the concrete precast pile below the foundation ditch bottom surface can provide great side friction resistance and end resistance, makes the utility model discloses have better stability, even born great effort and also be difficult to fracture to effectively play the supporting role for the foundation ditch excavation. In addition, the lower part of the inclined supporting structure of the combined lattice column-concrete precast pile is provided with the concrete precast pile, and the precast pile has low manufacturing cost and mature process, so that the combined lattice column-concrete precast pile has better economic advantage; the upper part adopts the lattice column, when the lattice column passes through the bottom plate and the outer wall, the construction of the bottom plate and the outer wall is convenient, the welding of the water stop sheet is also more convenient, and meanwhile, the lattice column above the bottom plate can be recycled, so that the manufacturing cost is further saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic view of an inclined supporting structure of a combined lattice column-concrete precast pile according to an embodiment of the present invention;
fig. 2 is a schematic view corresponding to a partially enlarged view of a portion a in fig. 1, in which the lattice columns are connected to the precast concrete piles by connecting members;
FIG. 3 is a cross-sectional view corresponding to A in FIG. 1;
FIGS. 4-7 are diagrams of the construction process to which the present invention is applied;
description of reference numerals: the combined lattice column-concrete precast pile comprises a fender post 1, a ring beam 2, an inclined supporting structure 10 of the combined lattice column-concrete precast pile, a concrete precast pile 11, a lattice column 12, a connecting piece 13 and a water stop sheet 20.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In order to thoroughly understand the present invention, detailed steps and detailed structures will be provided in the following description so as to explain the technical solution of the present invention. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
The utility model provides a combined lattice column-concrete precast pile diagonal bracing structure 10, which is used for supporting a foundation pit, as shown in figure 1, a fender post 1 which is vertically driven into the soil is arranged on one side of the foundation pit, and the diagonal bracing structure 10 of the combined lattice column-concrete precast pile is driven into the soil at a preset angle alpha before the foundation pit is excavated; the inclined supporting structure 10 of the combined lattice column-concrete precast pile is composed of a concrete precast pile 11 and a lattice column 12 which are coaxially connected (namely, the concrete precast pile 11 and the lattice column 12 are connected into a straight line), the whole concrete precast pile 11 is positioned in the soil below the bottom surface of a foundation pit, the bottom end of the lattice column 12 is fixedly connected with the concrete precast pile 11, and the top end of the lattice column is fixedly connected with the ring beam 2 at the top of the fender post 1. Wherein, we generally form the ring beam 2 by pouring, and pour the top end of the lattice column 12 inside in the process of forming the ring beam 2 by pouring, so as to complete the fixed connection of the top end of the lattice column 12 and the ring beam 2.
In an alternative embodiment, the predetermined angle α is 30 ° to 60 ° from the horizontal plane, and more preferably, the predetermined angle α is 45 °.
In an alternative embodiment, the cross-section of the concrete precast pile 11 is circular or polygonal (preferably rectangular), and the bottom end is provided with a pointed end. Adopt this design can be with concrete precast pile 11 more convenient in the soil of driving into, if adopt the polygon concrete precast pile who has the edges and corners simultaneously to strengthen the side frictional resistance in the soil body.
In an alternative embodiment, one end of the lattice column 12 is connected to the precast concrete pile 11 by a connector 13 or by pouring. The lattice column 12 and the precast concrete pile 11 are preferably connected together using a connecting member 13, as shown in fig. 2. Optionally, the connecting piece 13 is a connecting steel plate, the size of the steel plate is determined according to the type of the precast concrete pile and the type of the lattice column, and two ends of the connecting steel plate are fixedly connected with the precast concrete pile 11 and the lattice column 12 through welding or flanges.
In an alternative embodiment, the basement bottom plate is arranged on the bottom surface of the foundation pit, the water stop sheet 20 is arranged at the position, penetrating through the basement bottom plate, of the lattice column 12, and the water stop sheet 20 plays a role in water prevention, so that the problem that underground water penetrates into the basement due to the fact that the combined lattice column-concrete precast pile inclined support penetrates through the bottom plate is avoided.
Referring to fig. 4-7, the steps of the combined lattice column-concrete precast pile sway brace 10 during the concrete construction of the present invention will be briefly described as follows:
1) firstly, pressing a concrete precast pile 11 into a soil layer to a certain depth according to a design angle alpha (namely, forming an included angle of 30-60 degrees with the horizontal plane), as shown in figure 4;
2) the concrete precast pile 11 is firmly connected with the lattice column 12 through a connecting piece 13;
3) continuously pressing the latticed column 12 and the concrete precast pile 11 to the designed depth, as shown in fig. 5;
4) the ring beam 2 is formed on the top of the fender post 1 by pouring or the like, and the top of the lattice column 12 is connected with the ring beam 2, as shown in fig. 6.
5) After the foundation pit is excavated to the bottom of the pit, the water stop sheet 20 is welded on the latticed column 12 penetrating through the bottom plate of the basement, and the foundation pit retaining pile 1, the latticed column 12 and the concrete precast pile 11 form an inclined support foundation pit retaining structure together, as shown in fig. 7.
The above description is directed to the preferred embodiment of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that devices and structures not described in detail are understood to be implemented in a manner common in the art; without departing from the scope of the invention, it is intended that the present invention shall not be limited to the above-described embodiments, but that the present invention shall include all the modifications and variations of the embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still fall within the protection scope of the technical solution of the present invention, where the technical entity does not depart from the content of the technical solution of the present invention.
Claims (8)
1. The inclined support structure of the combined lattice column-concrete precast pile is used for supporting a foundation pit, and a fender post (1) is arranged on one side of the foundation pit, and is characterized in that the inclined support structure (10) of the combined lattice column-concrete precast pile is driven into the soil at a preset angle before the foundation pit is excavated;
the inclined support structure (10) of the combined lattice column-concrete precast pile is composed of a concrete precast pile (11) and a lattice column (12) which are coaxially connected, the concrete precast pile (11) is integrally located in the soil below the bottom surface of a foundation pit, the bottom end of the lattice column (12) is fixedly connected with the top end of the concrete precast pile (11), and the top end of the lattice column (12) is fixedly connected with a girt beam (2) at the top of a fender post (1).
2. The inclined support structure of the combined lattice column-concrete precast pile according to claim 1, wherein the predetermined angle is an angle of 30 ° to 60 ° from a horizontal plane.
3. The diagonal support structure of a combined lattice column-concrete precast pile according to claim 2, wherein the predetermined angle is 45 °.
4. The diagonal bracing structure of a combined lattice column-concrete precast pile according to claim 1, wherein the cross-section of the concrete precast pile (11) is circular or polygonal, and a tip is provided at a bottom end.
5. The diagonal bracing structure of the combined lattice column-concrete precast pile according to claim 1, wherein one end of the lattice column (12) is connected with the concrete precast pile (11) by a connector (13) or pouring.
6. The diagonal bracing structure of a combined lattice column-concrete precast pile according to claim 5, wherein the connecting member (13) is a connecting steel plate, and both ends of the connecting steel plate are fixedly connected with the concrete precast pile (11) and the lattice column (12) by welding or flanges.
7. The diagonal bracing structure of a combined lattice column-concrete precast pile according to claim 1, wherein a basement floor is provided at a bottom surface of the foundation pit, and a water stop sheet (20) is provided at a position where the lattice column (12) penetrates the basement floor.
8. The diagonal bracing structure of a combined lattice column-concrete precast pile according to claim 1, wherein the ring beam (2) is formed by casting and the top end of the lattice column (12) is cast inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020798345.7U CN212294679U (en) | 2020-05-14 | 2020-05-14 | Combined lattice column-concrete precast pile inclined support structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020798345.7U CN212294679U (en) | 2020-05-14 | 2020-05-14 | Combined lattice column-concrete precast pile inclined support structure |
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| CN212294679U true CN212294679U (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267476A (en) * | 2020-11-09 | 2021-01-26 | 上海宝力通基础工程有限公司 | Combined type inclined strut support pile |
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- 2020-05-14 CN CN202020798345.7U patent/CN212294679U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112267476A (en) * | 2020-11-09 | 2021-01-26 | 上海宝力通基础工程有限公司 | Combined type inclined strut support pile |
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| CP01 | Change in the name or title of a patent holder |
Address after: No. 38, Shuifeng Road, Yangpu District, Shanghai 202150 Patentee after: Shanghai Survey, Design and Research Institute (Group) Co.,Ltd. Address before: No. 38, Shuifeng Road, Yangpu District, Shanghai 202150 Patentee before: SGIDI ENGINEERING CONSULTING (Group) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |