CN212248260U - Foundation pit support replacing structure - Google Patents
Foundation pit support replacing structure Download PDFInfo
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- CN212248260U CN212248260U CN202020144007.1U CN202020144007U CN212248260U CN 212248260 U CN212248260 U CN 212248260U CN 202020144007 U CN202020144007 U CN 202020144007U CN 212248260 U CN212248260 U CN 212248260U
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Abstract
The utility model discloses a foundation ditch trades brace structure and method, include: a fender pile; the enclosing purlins comprise top enclosing purlins, bottom enclosing purlins and a plurality of middle enclosing purlins; the inner supports comprise a top inner support, a bottom inner support and a plurality of middle inner supports and are respectively arranged on the inner sides of the corresponding surrounding purlins; the plurality of support exchanging beams are in one-to-one correspondence with the middle purlins, the support exchanging beams are positioned on the inner sides of the corresponding middle purlins, one ends of the support exchanging beams are connected to the corresponding middle purlins, the other ends of the support exchanging beams are tightly attached to the main body structure outer wall of the underground structure, and the support exchanging beams are just opposite to the main body structure inner partition wall, the main body structure vertical frame and the other main body structure outer wall which is vertically intersected with the main body structure outer wall tightly attached to the support exchanging beams; the utility model discloses a trade the bracing beam and transmit outer soil pressure of foundation ditch to outer wall, interior partition wall or vertical frame on, utilize the anti side ability of structure of outer wall, interior partition wall or vertical frame itself to resist side direction soil pressure.
Description
Technical Field
The utility model relates to a technical field of municipal administration drainage structure engineering and foundation ditch engineering technique especially relates to a technical field that the foundation ditch trades the strut structure.
Background
At present, a large number of underground structures (such as pump rooms and the like) of municipal water supply and drainage engineering are constructed in a mode of supporting, excavating and cast-in-place. The structure of the underground structure for water supply and drainage has the following characteristics: the layer height of each underground layer is higher, and the arrangement of the inner partition wall is more complicated. Therefore, the support replacement of each inner support in the structure back-building process of the foundation pit support engineering is difficult.
In the foundation pit supporting engineering, the support replacement generally replaces corresponding vertical inner supports by utilizing each layer of horizontal floor slabs of the structure. The height of each layer of the underground pump house is higher, and the vertical distance between floor slabs of each layer is larger, so that a plurality of support positions in the vertical direction are provided without floor slabs. Temporary steel supports can be adopted only on the inner side of the outer wall of the structure for replacing the supports, but because the number of the internal partition walls is large, the supports need to be perforated to penetrate the walls, and the water stop of the internal partition walls is adversely affected; without the partition wall, the support is divided into multiple sections, it is difficult to maintain the alignment of the support axis, and the implementation of the sectional support is complicated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the problem of above-mentioned production, the utility model is to provide a foundation ditch trades props structure, through trading on propping the roof beam and transmitting outer wall, interior partition wall or vertical frame with the outer soil pressure of foundation ditch, utilizes the anti side ability of structure of outer wall, interior partition wall or vertical frame itself to resist side direction soil pressure.
In order to realize the purpose, the utility model discloses the technical scheme who takes does:
a foundation pit bracing change structure, comprising:
the inner side of the fender post is provided with a foundation pit, and the foundation pit is used for pouring an underground structure;
the purlins comprise top purlins, bottom purlins and a plurality of middle purlins; the top enclosing purlin is arranged at the top of the enclosing pile, the bottom enclosing purlin and the middle enclosing purlin are both positioned on the inner side of the enclosing pile, the bottom enclosing purlin is positioned at the lowest part of the enclosing purlin, and a plurality of middle enclosing purlins are positioned between the top enclosing purlin and the bottom enclosing purlin;
the inner supports comprise a top inner support, a bottom inner support and a plurality of middle inner supports, the top inner support is arranged on the inner side of the top enclosing purlin, the bottom inner support is arranged on the inner side of the bottom enclosing purlin, the middle inner supports correspond to the middle enclosing purlins one to one, and the middle inner supports are respectively arranged on the inner sides of the corresponding middle enclosing purlins;
the supporting beams are in one-to-one correspondence with the middle enclosing purlins, the supporting beams are located on the inner sides of the corresponding middle enclosing purlins, one ends of the supporting beams are connected to the corresponding middle enclosing purlins, and the other ends of the supporting beams are tightly attached to the outer wall of the main structure of the underground structure.
The foundation pit support replacing structure further comprises a bottom support replacing plate and a top support replacing plate;
the bottom support replacing plate is positioned below the bottom inner support, one end of the bottom support replacing plate is tightly attached to the guard pile, and the other end of the bottom support replacing plate is tightly attached to the bottom plate of the underground structure;
the top replacing support plate is positioned below the top inner support, one end of the top replacing support plate is tightly attached to the guard post, and the other end of the top replacing support plate is tightly attached to a top plate of the underground structure.
The foundation pit support exchanging structure is characterized in that the support exchanging beam is respectively arranged at the main structure inner partition wall facing the underground structure, the main structure vertical frame of the underground structure and the other main structure outer wall which is vertically intersected with the main structure outer wall and is tightly attached to the support exchanging beam.
The foundation pit support replacing structure is characterized in that the bottom of the middle inner support is higher than the bottom of the middle surrounding purlin.
In the foundation pit support replacing structure, the lower part of the inner side of the middle enclosing purlin is embedded with a plurality of steel bar connectors; the support replacing beam comprises a plurality of longitudinal reinforcing steel bars and a plurality of distributed reinforcing steel bars, and the longitudinal reinforcing steel bars are respectively connected with the reinforcing steel bar connector.
Above-mentioned foundation ditch trades props structure, wherein, trade the supporting beam with be provided with the asphalt felt between the major structure outer wall.
The utility model discloses owing to adopted above-mentioned technique, make it compare the positive effect that has with prior art and be:
the utility model discloses a the outside of the major structure's of underground structures outer wall, and just right the major structure inner partition wall of underground structures reaches the vertical frame of major structure of underground structures and with it hugs closely to trade the supporting beam trade another that the major structure outer wall intersects perpendicularly major structure outer wall department sets up and trades the supporting beam, with the outer soil pressure transmission of foundation ditch to outer wall, inner partition wall or vertical frame on, utilize the structure anti side ability of outer wall, inner partition wall or vertical frame itself to resist side direction soil pressure, through changing the inside prior art who trades the supporting beam that sets up of major structure, practice thrift the engineering volume, reduce the construction degree of difficulty and accelerate the progress.
Drawings
Fig. 1 is a schematic plan view of a foundation pit support replacing structure of the present invention;
fig. 2 is a schematic sectional view of a foundation pit support replacing structure in a main structure at a partition wall;
fig. 3 is a detailed structural view of a support exchange beam of the foundation pit support exchange structure at the partition wall in the main structure of the utility model;
fig. 4 is a schematic view of a cross-sectional layout of a foundation pit support replacing structure at a vertical frame of a main structure of the utility model;
fig. 5 is the utility model discloses a foundation ditch trades structure of propping is in the structure detail of trading the stay beam of the vertical frame department of major structure.
In the drawings:
1. a fender pile; 2. enclosing purlins; 21. a top enclosing purlin; 22. a middle enclosing purlin; 23. the bottom encloses the purlin; 3. an inner support; 31. a top inner support; 32. a middle inner support; 33. a bottom inner support; 4. an underground structure; 41. a main structure outer wall; 42. an inner partition wall of the main structure; 43. a main structure vertical frame; 44. a base plate; 45. a top plate; 5. replacing the supporting beam; 51. longitudinal reinforcing steel bars; 52. distributing reinforcing steel bars; 6. replacing a supporting plate at the bottom; 7. replacing a supporting plate at the top; 8. a steel bar connector; 9 of felt.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
Fig. 1 is a schematic plan view of a foundation pit support replacing structure of the present invention; fig. 2 is a schematic sectional view of a foundation pit support replacing structure in a main structure at a partition wall; fig. 3 is a detailed structural view of a support exchange beam of the foundation pit support exchange structure at the partition wall in the main structure of the utility model; fig. 4 is a schematic view of a cross-sectional layout of a foundation pit support replacing structure at a vertical frame of a main structure of the utility model; fig. 5 is the utility model discloses a foundation ditch trades structure of propping is in the structure detail of trading the stay beam of the vertical frame department of major structure.
Referring to fig. 1 to 5, a foundation pit support replacing structure according to a preferred embodiment is shown, and the foundation pit support replacing structure includes:
the fender pile 1, fender pile 1 inboard is the foundation ditch, and the foundation ditch is used for pouring underground structures 4.
A plurality of enclose purlin 2, enclose purlin 2 and enclose purlin 22 including top enclose purlin 21, bottom enclose purlin 23 and a plurality of centre. Top encloses purlin 21 and sets up the top of fender pile 1, bottom enclose purlin 23 and middle purlin 22 all are located fender pile 1's inboard to bottom encloses purlin 23 and is located the below of enclosing purlin 2, encloses purlin 22 in the middle of a plurality of and is located the top enclose purlin 21 with the bottom encloses between the purlin 23.
The inner supports 3 are arranged in a plurality of the inner supports 3, each inner support 3 comprises a top inner support 31, a bottom inner support 33 and a plurality of middle inner supports 32, each top inner support 31 is arranged on the inner side of the top surrounding purlin 21, each bottom inner support 33 is arranged on the inner side of the bottom surrounding purlin 23, each middle inner support 32 corresponds to each middle surrounding purlin 22 in a one-to-one mode, and each middle inner support 32 is arranged on the inner side of each corresponding middle surrounding purlin 22.
The plurality of support beams 5 are in one-to-one correspondence with the middle surrounding purlins 22, the support beams 5 are located on the inner sides of the corresponding middle surrounding purlins 22, one ends of the support beams 5 are connected to the corresponding middle surrounding purlins 22, and the other ends of the support beams 5 are tightly attached to the main structure outer wall 41 of the underground structure 4.
The method for replacing the support of the foundation pit by using the embodiment comprises the following steps:
(1) and (3) installing a surrounding purlin 2 and an inner support 3 in the surrounding pile 1, and pouring an underground structure 4 in the foundation pit.
(2) The main structure outer wall 41 of the underground structure 4 is cast below any one of the intermediate inner supports 32, and the bracing change beam 5 is simultaneously cast below the intermediate inner support 32.
(3) And after the underground structure 4 and the support replacing beam 5 below the middle inner support 32 reach the designed strength of the concrete, removing the middle inner support 32 and continuously pouring the underground structure 4.
(4) And (5) repeating the step (2) and the step (3) until the underground structure 4 is poured.
Compared with the traditional foundation pit support replacing structure, the embodiment does not need to depend on the horizontal floor slab inside the underground structure 4. When the underground structure 4 lacks a horizontal intermediate floor and the space between the bottom plate 44 and the top plate 45 is large, it is not necessary to erect temporary steel supports in the underground structure 4, the cost of the temporary steel supports is saved, and the construction time for erecting and dismantling the temporary steel supports is saved. And the inside of the underground structure 4 cannot be penetrated by the temporary steel support, so that the waterproofness of the underground structure 4 is improved.
The above is merely an example of the preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.
Further, in a preferred embodiment, a bottom exchange plate 6 and a top exchange plate 7 are included.
The bottom exchange plate 6 is positioned below the bottom inner support 33, one end of the bottom exchange plate 6 is tightly attached to the guard pile 1, and the other end of the bottom exchange plate 6 is tightly attached to the bottom plate 44 of the underground structure 4. And (3) pouring the bottom support replacing plate 6 while pouring the bottom plate 44 and the outer wall 41 of the underground structure, after the main structure outer wall 41 of the underground structure 4 is poured to the position below the bottom inner support 33 and the design strength of concrete is reached, removing the bottom inner support 33, and continuously pouring the underground structure.
And the top exchange supporting plate 7 is positioned below the top inner support 31, one end of the top exchange supporting plate 7 is tightly attached to the guard pile 1, and the other end of the top exchange supporting plate 7 is tightly attached to a top plate 45 of the underground structure 4. And (3) casting a top support replacing plate 7 below the top inner support 31 while casting a top plate 45 of the underground structure 4, and removing the top inner support 31 after the top plate 45 and the top support replacing plate 7 reach the designed strength of concrete.
Because the underground structure 4 is provided with the bottom plate 44 and the top plate 45, the top inner support 31 and the bottom inner support 33 are replaced by the existing foundation pit replacing method in the embodiment, and a temporary steel support does not need to be additionally arranged in the underground structure 4. The top inner support 31 and the bottom inner support 33 can also adopt the mode of the utility model for changing the supporting beam 5 to change the supporting without limitation.
Further, in a preferred embodiment, the supporting beam 5 is disposed at the main structure inner partition wall 42 facing the underground structure 4, the main structure vertical frame 43 of the underground structure 4, and the other main structure outer wall 41 perpendicularly intersecting with the main structure outer wall 41 tightly attached to the supporting beam 5, respectively, for transmitting the soil pressure outside the foundation pit to the main structure inner partition wall 42, the main structure vertical frame 43, and the other main structure outer wall 41, and using the lateral resistance of the main structure inner partition wall 42, the main structure vertical frame 43, and the other main structure outer wall 41 itself to resist the lateral soil pressure.
Further, in a preferred embodiment, the bottom of the intermediate inner support 32 is higher than the bottom of the intermediate purlin 22. That is, in step (1), the intermediate inner support 32 is lifted up, so that the bottom of the intermediate inner support 32 is higher than the bottom of the intermediate purlin 22, and then the intermediate inner support 32 is installed on the inner side of the intermediate purlin 22. The lower part of the inner side of the middle purlin 22 is exposed and can be used for connecting the bracing exchanging beam 5. The processing method can enable the bracing change beam 5 and the underground structure 4 below the middle inner support 32 to be constructed synchronously, the original middle enclosing purlin 22 at the middle inner support 32 can be utilized by the bracing change beam 5, and the enclosing purlin connected with the bracing change beam 5 does not need to be poured additionally.
Further, in a preferred embodiment, a plurality of steel bar connectors 8 are embedded in the lower part of the inner side of the surrounding purlin 2. The support exchanging beam 5 comprises a plurality of longitudinal steel bars 51 and a plurality of distribution steel bars 52, and the longitudinal steel bars 51 are respectively connected with the steel bar connectors 8. Therefore, the main structure outer wall 41 opposite to the bracing beam 5 and the bracing beam 5 can be poured at the same time, and the bracing beam 5 and the main structure outer wall 41 are separated by the linoleum 9, so as to form a force transfer system of foundation pit outer soil pressure → fender post 1 → purlin 2 → bracing beam 5 → main structure outer wall 41 → main structure inner partition wall 42, or main structure vertical frame 43, or another vertically intersected main structure outer wall 41.
Further, in a preferred embodiment, a felt 9 is disposed between the bracing beam 5 and the outer wall 41 of the main structure, and the felt 9 separates the bracing beam 5 from the outer wall 41 of the main structure.
The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.
Claims (6)
1. The utility model provides a foundation ditch trades props structure which characterized in that includes:
the inner side of the fender post is provided with a foundation pit, and the foundation pit is used for pouring an underground structure;
the purlins comprise top purlins, bottom purlins and a plurality of middle purlins; the top enclosing purlin is arranged at the top of the enclosing pile, the bottom enclosing purlin and the middle enclosing purlin are both positioned on the inner side of the enclosing pile, the bottom enclosing purlin is positioned at the lowest part of the enclosing purlin, and a plurality of middle enclosing purlins are positioned between the top enclosing purlin and the bottom enclosing purlin;
the inner supports comprise a top inner support, a bottom inner support and a plurality of middle inner supports, the top inner support is arranged on the inner side of the top enclosing purlin, the bottom inner support is arranged on the inner side of the bottom enclosing purlin, the middle inner supports correspond to the middle enclosing purlins one to one, and the middle inner supports are respectively arranged on the inner sides of the corresponding middle enclosing purlins;
the supporting beams are in one-to-one correspondence with the middle enclosing purlins, the supporting beams are located on the inner sides of the corresponding middle enclosing purlins, one ends of the supporting beams are connected to the corresponding middle enclosing purlins, and the other ends of the supporting beams are tightly attached to the outer wall of the main structure of the underground structure.
2. The foundation pit bracing replacing structure according to claim 1, further comprising a bottom bracing replacing plate and a top bracing replacing plate;
the bottom support replacing plate is positioned below the bottom inner support, one end of the bottom support replacing plate is tightly attached to the guard pile, and the other end of the bottom support replacing plate is tightly attached to the bottom plate of the underground structure;
the top replacing support plate is positioned below the top inner support, one end of the top replacing support plate is tightly attached to the guard post, and the other end of the top replacing support plate is tightly attached to a top plate of the underground structure.
3. A foundation pit bracing-replacing structure according to claim 1, wherein the bracing-replacing beam is respectively arranged at the main structure inner partition wall facing the underground structure, the main structure vertical frame of the underground structure and the other main structure outer wall vertically intersected with the main structure outer wall tightly attached to the bracing-replacing beam.
4. A foundation pit bracing-replacing structure according to claim 1, wherein the bottom of the middle inner support is higher than the bottom of the middle purlin.
5. The foundation pit support replacing structure according to claim 4, wherein a plurality of steel bar connectors are embedded in the lower part of the inner side of the middle purlin; the support replacing beam comprises a plurality of longitudinal reinforcing steel bars and a plurality of distributed reinforcing steel bars, and the longitudinal reinforcing steel bars are respectively connected with the reinforcing steel bar connector.
6. The foundation pit bracing replacing structure according to claim 5, wherein a felt is arranged between the bracing replacing beam and the main structure outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020144007.1U CN212248260U (en) | 2020-01-21 | 2020-01-21 | Foundation pit support replacing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020144007.1U CN212248260U (en) | 2020-01-21 | 2020-01-21 | Foundation pit support replacing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212248260U true CN212248260U (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020144007.1U Active CN212248260U (en) | 2020-01-21 | 2020-01-21 | Foundation pit support replacing structure |
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| Country | Link |
|---|---|
| CN (1) | CN212248260U (en) |
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2020
- 2020-01-21 CN CN202020144007.1U patent/CN212248260U/en active Active
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