CN209924488U - Combined wall structure for underground storey addition of existing building - Google Patents
Combined wall structure for underground storey addition of existing building Download PDFInfo
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- CN209924488U CN209924488U CN201920412850.0U CN201920412850U CN209924488U CN 209924488 U CN209924488 U CN 209924488U CN 201920412850 U CN201920412850 U CN 201920412850U CN 209924488 U CN209924488 U CN 209924488U
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- wall
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- section steel
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- basement outer
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 41
- 239000010959 steel Substances 0.000 claims abstract description 41
- 238000009424 underpinning Methods 0.000 claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 description 7
- 238000009412 basement excavation Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model relates to a composite wall structure for existing building underground increases layer, include: a underpinning structure above and adjacent to the superstructure; the high-pressure jet grouting pile is internally provided with profile steel for supporting the underpinning structure; a group of connecting pieces which are connected with the section steel and extend inwards; and the basement outer wall is positioned on the inner side of the high-pressure jet grouting pile and is poured with the connecting piece into a whole. The utility model utilizes the section steel, the connecting piece and the basement outer wall to form the combined wall, so that the section steel in the enclosure structure and the basement outer wall can jointly participate in the permanent action, and the utilization efficiency of the section steel is improved; the arrangement of the enclosing structure and the basement outer wall is avoided, the rigidity of the basement outer wall is increased, the thickness of the newly-added basement outer wall can be reduced, and the underground space is enlarged; the utilization efficiency of the section steel is high, and more permanent use spaces are provided for basements.
Description
Technical Field
The utility model relates to a combination wall structure for existing building underground increases layer belongs to building engineering technical field.
Background
In the updating and development of cities, the situation that a large number of existing underground spaces in old communities or public places in central areas of cities cannot meet the use requirements is increasingly prominent, and the underground layer-expanding capacity of existing buildings needs to be expanded. The method comprises the following steps of carrying out underground storey addition on the existing building, generally, underpinning and protecting the building, constructing an underground enclosure structure, excavating earthwork layer by layer to a designed depth, and finally pouring structures such as a basement bottom plate, an outer wall and a beam slab column in sequence to complete underground storey addition construction.
When the basement is added with layers, the enclosure structure can adopt a mode of inserting section steel in the cement soil piles. And after the basement is excavated, binding reinforcing steel bars and supporting a formwork along the inner side of the enclosure structure, and pouring concrete to form the basement outer wall. At the moment, the enclosure structure is only used as a temporary structure and does not participate in permanent action. When the shaped steel in the envelope is used as the underpinning pile, or when the construction space is limited, the shaped steel can not be recovered after the underground layer adding is finished, and the shaped steel is only used as a temporary member, so that a great deal of waste of the shaped steel can be caused. How to enable the profile steel in the building envelope to jointly participate in a permanent action with the outer wall of the basement after the underground storey addition is finished, and the technical problem to be solved in the field is to properly reduce the thickness of the outer wall of the basement and increase the underground space.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a combination wall structure for existing building underground increases layer, this structure utilizes shaped steel, connecting piece and basement outer wall to form the combination wall in underground construction work progress to make shaped steel can participate in permanent effect with the basement outer wall jointly among the envelope, improve the utilization efficiency of shaped steel, avoided setting up envelope and basement outer wall respectively, increased the rigidity of basement outer wall, and can reduce the thickness that newly increases the basement outer wall, enlarged underground space.
The utility model adopts the following technical proposal:
a composite wall structure for use in underground addition to existing buildings, comprising: an underpinning structure 2 immediately above the superstructure 1; the high-pressure jet grouting pile 8 which supports the underpinning structure 2 and contains the section steel 3 is arranged; a group of connecting pieces 6 which are connected with the section steel 3 and extend inwards; and the basement outer wall 7 is positioned on the inner side of the high-pressure jet grouting pile 8 and is cast with the connecting piece 6 into a whole.
Further, the underpinning structure 2 is located at one circle of the corresponding position of the upper structure 1.
Furthermore, a basement horizontal structure 4 is arranged on the inner side of the high-pressure jet grouting pile 8.
Further, the basement horizontal structure 4 is directly connected with the high-pressure jet grouting pile 8, and the basement horizontal structure 4 is not provided with a connecting piece and a basement outer wall 7.
Further, the section steel 3 is arranged along the periphery of the basement outer wall 7.
Further, the connecting piece 6 is arranged on the surface of one side, facing the basement outer wall 7, of the section steel 3 in a rectangular or quincunx shape.
Further, a set of connecting members 6 is provided at equal intervals in the vertical direction.
The beneficial effects of the utility model reside in that:
1) the profile steel, the connecting piece and the basement outer wall are utilized to form a combined wall, so that the profile steel in the enclosure structure and the basement outer wall can jointly participate in a permanent action, and the utilization efficiency of the profile steel is improved;
2) the arrangement of the enclosing structure and the basement outer wall is avoided, the rigidity of the basement outer wall is increased, the thickness of the newly-added basement outer wall can be reduced, and the underground space is enlarged;
3) the utilization efficiency of the section steel is high, and more permanent use spaces are provided for basements.
Drawings
Fig. 1 is a floor layout diagram of an existing building underground storey-adding underpinning structure.
Fig. 2 is a sectional view taken along line i-i in fig. 1, illustrating the underpinning of the beam slab in fig. 2.
FIG. 3 shows the construction of underpinning piles and basement enclosures.
FIG. 4 is a schematic view of earth excavation and construction of an underground beam slab structure.
FIG. 5 is a schematic view of the construction of the connecting member.
Fig. 6 is a schematic view of pouring an outer wall of a basement.
In the figure, 1, an upper structure, 2, a underpinning structure, 3, section steel, 4, a basement horizontal structure, 5, a basement bottom plate, 6, a connecting piece, 7, a basement outer wall and 8, high-pressure jet grouting piles are arranged.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 6, a composite wall structure for an underground addition layer of an existing building, comprising: an underpinning structure 2 immediately above the superstructure 1; the high-pressure jet grouting pile 8 which supports the underpinning structure 2 and contains the section steel 3 is arranged; a group of connecting pieces 6 which are connected with the section steel 3 and extend inwards; and the basement outer wall 7 is positioned on the inner side of the high-pressure jet grouting pile 8 and is cast with the connecting piece 6 into a whole.
In this embodiment, the underpinning structure 2 is located one revolution of the corresponding position of the superstructure 1, see fig. 1.
In this embodiment, referring to fig. 4-6, the basement horizontal structure 4 is arranged inside the high-pressure jet grouting pile 8.
In this embodiment, referring to fig. 6, the basement horizontal structure 4 is directly connected with the high-pressure jet grouting pile 8, and the basement horizontal structure 4 is located at a position without a connecting piece and the basement outer wall 7.
In this embodiment, referring to fig. 6, the section steel 3 is arranged along the circumference of the basement exterior wall 7.
In this embodiment, referring to fig. 1 and 6, the connecting member 6 is arranged in a rectangular or quincunx shape on a side surface of the section steel 3 facing the basement exterior wall 7.
In this embodiment, referring to fig. 5 and 6, a set of connecting members 6 are arranged at equal intervals in the vertical direction.
In the embodiment, the section steel 3 and the basement outer wall 7 are connected into a combined wall through the connecting piece 6, and bear the load of an upper structure together. The section steel 3 is arranged along the periphery of the newly-added basement outer wall line, and the connecting piece 6 can be arranged on the surface of one side, right opposite to the basement, of the section steel 3 in a rectangular or quincunx mode. Compared with the arrangement of the basement outer wall and the enclosing structure respectively, the combined wall has the advantages of large section rigidity, high utilization efficiency of the section steel, small thickness of the basement outer wall, capability of providing more permanent use spaces for the basement and the like. The sizes of the components adopted in the embodiment are comprehensively determined according to the upper structure form, the type of the section steel and the stress condition.
In the embodiment, in specific implementation: firstly, pile pressing holes are reserved along the newly added basement outer wall line, a underpinning structure 2 is constructed, then section steel 3 is constructed in the pile pressing holes, and high-pressure jet grouting piles 8 are constructed among the section steel 3 to form an enclosure structure. After the building enclosure structure reaches the design strength, earth excavation and construction of the basement horizontal structure 4 are sequentially carried out below the existing building, and after earth excavation is carried out to the design depth, the basement bottom plate 5 is poured. Chiseling and cleaning up the cement soil on one side of the section steel 3, and constructing a connecting piece 6. And binding reinforcing steel bars, supporting templates and pouring concrete along the periphery of the basement in the basement, and constructing to finish the basement outer wall 7.
The conception and the embodiments of the present invention have been described in detail with reference to the drawings, but those skilled in the art will recognize that various modifications and changes may be made to the present invention without departing from the general concept of the present invention. Such as: the types, sizes and arrangement of the section steel and the connecting pieces, and the like, and all the changes or improvements are within the protection scope of the invention.
Claims (7)
1. A composite wall structure for underground addition of an existing building, comprising:
a underpinning structure (2) above and adjacent to the superstructure (1);
a high-pressure jet grouting pile (8) internally provided with the section steel (3) and used for supporting the underpinning structure (2);
a group of connecting pieces (6) which are connected with the section steel (3) and extend inwards;
and the basement outer wall (7) is positioned on the inner side of the high-pressure jet grouting pile (8) and is poured into a whole with the connecting piece (6).
2. The modular wall structure for the underground addition of an existing building according to claim 1, wherein: the underpinning structure (2) is positioned on the periphery of the corresponding position of the upper structure (1).
3. A composite wall structure for underground addition of an existing building according to claim 1 or 2, wherein: and a basement horizontal structure (4) is arranged on the inner side of the high-pressure jet grouting pile (8).
4. A modular wall structure for underground addition to existing buildings according to claim 3, wherein: the basement horizontal structure (4) is directly connected with the high-pressure jet grouting pile (8), and a connecting piece and a basement outer wall (7) are not arranged at the position where the basement horizontal structure (4) is located.
5. The modular wall structure for the underground addition of an existing building according to claim 1, wherein: the section steel (3) is arranged along the periphery of the basement outer wall (7).
6. The modular wall structure for the underground addition of an existing building according to claim 1, wherein: the connecting piece (6) is arranged on the surface of one side, facing the basement outer wall (7), of the section steel (3) in a rectangular or quincunx shape.
7. The modular wall structure for the underground addition of an existing building according to claim 1, wherein: a group of connecting pieces (6) are arranged at equal intervals in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920412850.0U CN209924488U (en) | 2019-03-28 | 2019-03-28 | Combined wall structure for underground storey addition of existing building |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920412850.0U CN209924488U (en) | 2019-03-28 | 2019-03-28 | Combined wall structure for underground storey addition of existing building |
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| Publication Number | Publication Date |
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| CN209924488U true CN209924488U (en) | 2020-01-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305268A (en) * | 2020-03-27 | 2020-06-19 | 浙江交工集团股份有限公司 | Underground pipe gallery, underground space collaborative enclosure structure and construction method thereof |
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2019
- 2019-03-28 CN CN201920412850.0U patent/CN209924488U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111305268A (en) * | 2020-03-27 | 2020-06-19 | 浙江交工集团股份有限公司 | Underground pipe gallery, underground space collaborative enclosure structure and construction method thereof |
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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. |