CN209855277U - Conversion layer structure for underground added layer of existing building - Google Patents
Conversion layer structure for underground added layer of existing building Download PDFInfo
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- CN209855277U CN209855277U CN201920406877.9U CN201920406877U CN209855277U CN 209855277 U CN209855277 U CN 209855277U CN 201920406877 U CN201920406877 U CN 201920406877U CN 209855277 U CN209855277 U CN 209855277U
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- underground
- underpinning
- piles
- supporting
- addition
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 20
- 238000009424 underpinning Methods 0.000 claims abstract description 57
- 238000013519 translation Methods 0.000 claims abstract description 4
- 238000012546 transfer Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 25
- 238000000034 method Methods 0.000 abstract description 7
- 238000009412 basement excavation Methods 0.000 description 3
- 238000009435 building construction Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model relates to a conversion layer structure for underground storey addition of an existing building, wherein an integral underpinning conversion layer is arranged under the upper structure of the existing building; the underpinning translation layer includes: a underpinning structure located at the top thereof; a set of support piles supporting the underpinning structure; a horizontal support structure located below the underpinning structure and connecting the adjacent support piles; and the group of inclined struts are obliquely arranged between the adjacent supporting piles and are simultaneously positioned between the underpinning structure and the horizontal supporting structure. The utility model improves the temporary rigidity and the overall stability of the newly added underground structure in the underground storey-adding construction process by forming the conversion layer, enhances the integrity of the underground structure and reduces the uneven deformation of the newly added underground structure; meanwhile, the integrity of the underground structure is enhanced, the uneven settlement deformation of the upper structure is controlled, more spaces are provided for underground storey-adding construction, and equipment and personnel can conveniently enter and exit the construction.
Description
Technical Field
The utility model relates to a conversion layer structure that is used for existing building underground to increase layer belongs to building engineering technical field.
Background
In the updating and development of cities, a large number of old communities or public places in the central area of the city have insufficient underground space, the situation of difficult parking is increasingly prominent, and the underground space of the existing building needs to be subjected to storey-adding expansion. In the process of building floor-adding construction of the underground space of the existing building, if the deformation is too large, the superstructure is easy to crack and even is damaged, so underpinning protection needs to be carried out on the superstructure.
Underpinning piles can be commonly adopted to underpin and protect houses, and after piles are supplemented at the sides of columns or walls of the houses, earthwork is excavated layer by layer to form basements. Because the underground construction space is narrow and small, as the horizontal support of each layer of basement beam slab structure, only pour some beam slab structures according to the construction needs in the earthwork excavation process, after the bottom plate is poured, the rest parts are finished by layer construction. During the construction of the underground added layer, the rigidity and the lateral deformation resistance of the newly added underground horizontal supporting structure are relatively weak, the integrity of the underground structure is not strong, and the upper structure is easy to have overlarge uneven settlement.
In order to improve the temporary rigidity and the overall stability of the horizontal support during the layer building of the underground structure, a method of enlarging the section of a component or constructing more horizontal support components can be generally adopted, but the problems of lowering the net height of a basement or reducing the underground construction space and the like can be caused. When carrying out underground layer-building construction, improve interim rigidity and the stability of newly-increased underground horizontal support structure construction period, strengthen underground structure's wholeness, control superstructure's uneven settlement warp, provide more spaces for underground layer-building construction simultaneously, make things convenient for equipment and personnel to pass in and out the construction, the technical problem that the field is waited for to solve urgently.
Disclosure of Invention
The utility model aims at providing a conversion layer structure for existing building underground increases layer, this structure increases layer in-process in the underground and utilizes the underpinning structure, bracing and horizontal support structure combination to form the conversion layer to improve the interim rigidity and the overall stability of newly-increased underground structure in the underground increases layer work progress, strengthen underground structure's wholeness, reduce newly-increased underground structure's inhomogeneous deformation, avoid constructing too much horizontal support component simultaneously, increase layer construction for the underground and provide bigger space.
The utility model adopts the following technical proposal:
a conversion layer structure for underground storey addition of an existing building is characterized in that an integral underpinning conversion layer is arranged under an upper structure 1 of the existing building; the underpinning translation layer includes: a underpinning structure 2 positioned at the top of the underpinning structure; a set of support piles 3 supporting the underpinning structure 2; a horizontal support structure 4 located below the underpinning structure 2 and connecting the adjacent support piles 3; a set of diagonal braces 5 arranged obliquely between adjacent support piles 3 and at the same time in a position between the underpinning structure 2 and the horizontal support structure 4.
Further, the underpinning structure 2 is an underpinning beam slab with an upper structure.
Further, the horizontal support structure 4 is a beam slab of a newly added basement or a temporary support.
Furthermore, the underpinning structure 2, the supporting piles 3 and the inclined struts 5 are connected through concrete pouring or mechanically connected through embedded parts.
Furthermore, the diagonal brace 5 can be made in a cast-in-place mode or a factory-prefabricated field-installation mode.
Further, adjacent struts 5 form an "X" configuration, or a "V" configuration.
Still further, support piles 3 are arranged around the periphery of the building, and horizontal support structures 4 are also arranged around the periphery of the building along the positions of the support piles 3.
Still further, a set of diagonal braces 5 is arranged around the periphery of the horizontal support structure 4.
The beneficial effects of the utility model reside in that:
1) the underpinning conversion layer is formed by combining the underpinning structure, the inclined strut and the horizontal support structure in the underground storey adding process, so that the temporary rigidity and the overall stability of the newly added underground structure in the underground storey adding construction process are improved, the integrity of the underground structure is enhanced, and the uneven deformation of the newly added underground structure is reduced;
2) by arranging the integral underpinning conversion layer, after the strength is improved, excessive horizontal supporting members can be avoided being constructed, and the cost is reduced; meanwhile, the integrity of the underground structure is enhanced, the uneven settlement deformation of the upper structure is controlled, more space is provided for underground storey-adding construction, and equipment and personnel can conveniently enter and exit the construction;
3) the structural strength is improved by avoiding the mode of enlarging the section of the component, so that the construction space is prevented from being reduced;
4) the inclined strut can be disassembled afterwards, and the horizontal supporting structure can be disassembled or not according to the requirement, so that the design is flexible.
Drawings
Fig. 1 is a plan view of existing building underpinning piles.
Fig. 2 is a construction drawing of an upper house underpinning structure, i.e., a cross-sectional view i-i of fig. 1.
Fig. 3 is a schematic view of underpinning pile construction.
Fig. 4 is a schematic view of a sub-surface earthwork excavation and a surface support structure construction.
Fig. 5 is a schematic view of the construction of the diagonal brace.
Figure 6 is a schematic view of the completed basement being excavated and the basement floor being poured.
In the figure, 1, an upper structure, 2, an underpinning structure, 3, an underpinning pile, 4, a horizontal supporting structure, 5, an inclined strut and 6, a basement bottom plate is newly added.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1-6, a transfer floor structure for underground addition of an existing building, an integrated underpinning transfer floor is arranged under an upper structure 1 of the existing building; the underpinning translation layer includes: a underpinning structure 2 positioned at the top of the underpinning structure; a set of support piles 3 supporting the underpinning structure 2; a horizontal support structure 4 located below the underpinning structure 2 and connecting the adjacent support piles 3; a set of diagonal braces 5 arranged obliquely between adjacent support piles 3 and at the same time in a position between the underpinning structure 2 and the horizontal support structure 4.
In this embodiment, referring to fig. 1-2, the underpinning structure 2 is a superstructure underpinning beam slab.
In this embodiment, referring to fig. 4-5, the horizontal support structure 4 is a beam slab or temporary support for an newly added basement.
In this embodiment, the underpinning structure 2, the support piles 3 and the diagonal braces 5 are connected by concrete casting or mechanically by embedment.
In this embodiment, the diagonal brace 5 may be made in-situ, or factory-prefabricated in-situ.
In this embodiment, referring to fig. 5-6, adjacent struts 5 form an "X" shaped structure;
in another embodiment, the adjacent struts 5 may also form a "V" shaped structure, which is not shown in the drawings.
In this embodiment, referring to fig. 1, 5 and 6, support piles 3 are provided around the periphery of the building, and horizontal support structures 4 are also provided around the periphery of the building at positions along the support piles 3.
In this embodiment, referring to fig. 1, 5, 6, a set of braces 5 is arranged around the periphery of the horizontal support structure 4.
In the embodiment, in specific implementation: when the underpinning pile 3 is an anchor rod pile, firstly, a pile hole is reserved for constructing the underpinning structure 2, and then the underpinning pile 3 is constructed. When the underpinning pile 3 is a cast-in-place pile, the underpinning pile 3 can be constructed first, and then the underpinning structure 2 is constructed. After the underground earthwork is excavated, a horizontal supporting structure 4 and an inclined strut 5 are constructed in sequence, the underpinning structure 2, the horizontal supporting structure 4 and the inclined strut 5 are connected to form an underpinning conversion layer integrally, and the inclined strut 5 is arranged along the periphery of the newly-added underground layer. When a plurality of layers of basements are built, the transfer floor can be arranged on the underground layer only, and can also be arranged on each layer of the basements respectively according to requirements, and the earthwork excavation and the transfer floor construction are carried out in sequence. After the basement is excavated to the designed depth, the basement bottom plate 6 is poured, then the underground structure is constructed layer by layer, the inclined strut 5 is dismantled, the underground storey-adding construction is completed, and the construction is convenient.
Wherein, the bracing 5 can be dismantled after the underground structure construction is accomplished. The underpinning conversion layer has the advantages of high structural rigidity and good integrity, the problems that the temporary rigidity and stability of a horizontal supporting structure are insufficient and the integrity of an underground structure is weak are solved, the adopted temporary underpinning structure and the cross section of the supporting structure are too large, more construction spaces are provided for underground storey addition, and the uneven settlement deformation of an upper structure is reduced. The sizes of the components adopted in the embodiment are comprehensively determined according to the upper structure, the support type, the underpinned pile type, the inclined support type and the stress condition.
While the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims. Such as: support structures, underpinning piles, types of diagonal braces, dimensions and arrangements, etc., which all should be within the scope of the claimed invention without departing from the general inventive concept.
Claims (8)
1. A conversion floor structure for underground addition of an existing building is characterized in that:
an integral underpinning conversion layer is arranged under the upper structure (1) of the existing building; the underpinning translation layer includes:
a underpinning structure (2) positioned on top thereof;
a set of support piles (3) supporting the underpinning structure (2);
a horizontal support structure (4) which is positioned below the underpinning structure (2) and connects the adjacent support piles (3);
and the group of inclined struts (5) are obliquely arranged between the adjacent supporting piles (3) and are simultaneously positioned between the underpinning structure (2) and the horizontal supporting structure (4).
2. The transfer floor structure for underground addition to existing buildings according to claim 1, wherein: the underpinning structure (2) is an underpinning beam slab with an upper structure.
3. The conversion floor structure for underground addition of existing buildings according to claim 1 or 2, wherein: the horizontal supporting structure (4) is a beam plate of a newly-added basement or a temporary support.
4. The conversion floor structure for underground addition of existing buildings according to claim 1 or 2, wherein: the underpinning structure (2), the supporting piles (3) and the inclined struts (5) are connected through concrete pouring or mechanically connected through embedded parts.
5. The conversion floor structure for underground addition of existing buildings according to claim 1 or 2, wherein: the inclined strut (5) can be manufactured in a cast-in-place mode or a factory-prefabricated field-installation mode.
6. The conversion floor structure for underground addition of existing buildings according to claim 1 or 2, wherein: the adjacent inclined struts (5) form an X-shaped structure or a V-shaped structure.
7. The transfer floor structure for underground addition to existing buildings according to claim 6, wherein: the supporting piles (3) are arranged on the periphery of the building, and the horizontal supporting structures (4) are also arranged on the periphery of the building along the positions of the supporting piles (3).
8. The transfer floor structure for underground addition to existing buildings according to claim 7, wherein: a group of inclined struts (5) are arranged along the periphery of the horizontal supporting structure (4) for a circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920406877.9U CN209855277U (en) | 2019-03-28 | 2019-03-28 | Conversion layer structure for underground added layer of existing building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920406877.9U CN209855277U (en) | 2019-03-28 | 2019-03-28 | Conversion layer structure for underground added layer of existing building |
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| CN209855277U true CN209855277U (en) | 2019-12-27 |
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| CN201920406877.9U Active CN209855277U (en) | 2019-03-28 | 2019-03-28 | Conversion layer structure for underground added layer of existing building |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733866A (en) * | 2020-05-16 | 2020-10-02 | 江苏瑞沃建设集团有限公司 | Pile foundation underpinning structure for newly-built urban tunnel below bridge |
| CN113356290A (en) * | 2021-06-25 | 2021-09-07 | 中铁二院华东勘察设计有限责任公司 | Longitudinal wall beam type pile foundation underpinning construction method for underground passage construction |
| CN113914653A (en) * | 2021-11-08 | 2022-01-11 | 中建四局第一建设有限公司 | Basement layer adding transformation process |
-
2019
- 2019-03-28 CN CN201920406877.9U patent/CN209855277U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111733866A (en) * | 2020-05-16 | 2020-10-02 | 江苏瑞沃建设集团有限公司 | Pile foundation underpinning structure for newly-built urban tunnel below bridge |
| CN113356290A (en) * | 2021-06-25 | 2021-09-07 | 中铁二院华东勘察设计有限责任公司 | Longitudinal wall beam type pile foundation underpinning construction method for underground passage construction |
| CN113356290B (en) * | 2021-06-25 | 2023-03-10 | 中铁二院华东勘察设计有限责任公司 | Longitudinal wall beam type pile foundation underpinning construction method for underground passage construction |
| CN113914653A (en) * | 2021-11-08 | 2022-01-11 | 中建四局第一建设有限公司 | Basement layer adding transformation process |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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 |