CN111173000A - Foundation pit supporting structure without stand column and construction method thereof - Google Patents
Foundation pit supporting structure without stand column and construction method thereof Download PDFInfo
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- CN111173000A CN111173000A CN202010097345.9A CN202010097345A CN111173000A CN 111173000 A CN111173000 A CN 111173000A CN 202010097345 A CN202010097345 A CN 202010097345A CN 111173000 A CN111173000 A CN 111173000A
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- foundation pit
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 230000008093 supporting effect Effects 0.000 title claims abstract description 27
- 238000009412 basement excavation Methods 0.000 claims abstract description 19
- 238000005266 casting Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000009435 building construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention relates to a foundation pit supporting structure without a stand column, which comprises: the enclosure structure is arranged around the region of the foundation pit to be excavated; at least two horizontal supports are sequentially arranged along the excavation depth of the foundation pit, the horizontal supports are horizontally supported between the enclosure structures, and the horizontal support close to the bottom of the foundation pit is positioned above the underground structure to be constructed; the vertical beams are arranged at intervals and are vertically connected between two adjacent horizontal supports; and the plurality of inclined struts are obliquely connected between the two adjacent horizontal struts and are fixedly connected with the vertical beam. The invention effectively solves the problem that the existence of the stand column influences the excavation of the foundation pit and the construction of the underground structure, utilizes the support structure without the stand column to support the foundation pit, avoids the influence on the excavation of the foundation pit and the construction of the underground structure in the later period, reduces the hidden danger of water leakage and ensures the construction quality.
Description
Technical Field
The invention relates to the field of building construction, in particular to a foundation pit supporting structure without a stand column and a construction method thereof.
Background
Along with the extensive development of underground space, building foundation ditch engineering is also towards big trend development deeply, to the great foundation ditch of excavation area and degree of depth, at present the generally adopted cast in situ concrete support system, including horizontal support beam and vertical support stand, utilize stand and crossbeam to support inside the foundation ditch and prevent the foundation ditch deformation, in big foundation ditch deeply, the quantity of stand probably reaches dozens or even hundreds, because there are a large amount of stands in the foundation ditch, when underground structure is under construction, there are earthwork excavation inefficiency, the slow scheduling problem of foundation ditch excavation speed, and the stand influences the construction of underground structure, if waterproofing membrane is discontinuous in stand department needs to set up the stagnant water board in addition, have great hidden danger of leaking, make construction quality difficult to guarantee.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a foundation pit supporting structure without a stand column and a construction method thereof, solves the problem that the existence of the stand column influences the excavation of a foundation pit and the construction of an underground structure, utilizes the supporting structure without the stand column to support the foundation pit, avoids the influence on the later-stage underground structure construction, reduces the hidden danger of water leakage, and ensures the construction quality.
The technical scheme for realizing the purpose is as follows:
the invention provides a foundation pit supporting structure without a stand column, which comprises:
the enclosure structure is arranged around the region of the foundation pit to be excavated;
at least two horizontal supports are sequentially arranged along the excavation depth of the foundation pit, the horizontal supports are horizontally supported between the enclosure structures, and the horizontal support close to the bottom of the foundation pit is positioned above the underground structure to be constructed;
the vertical beams are arranged at intervals and are vertically connected between two adjacent horizontal supports; and
and the plurality of inclined struts are obliquely connected between the two adjacent horizontal struts and are fixedly connected with the vertical beam.
According to the invention, a foundation pit supporting structure without a stand column is adopted, horizontal supports are sequentially arranged along the excavation depth, then vertical beams are connected between the horizontal supports, and inclined supports are obliquely arranged to support the interior of the foundation pit, so that the interior of the foundation pit can be effectively supported under the condition that the stand column is not arranged, the later-stage construction of an underground structure is not influenced, the problem that the existence of the stand column influences the construction of the underground structure is solved, the supporting structure without the stand column is utilized to support the foundation pit, meanwhile, the influence on the later-stage construction of the underground structure is avoided, the water leakage hidden danger is reduced, and the construction quality is ensured.
The foundation pit supporting structure without the upright column is further improved in that the inclined strut comprises a plurality of first inclined beams which are connected end to end, and the first inclined beams are spliced into a wave shape.
The foundation pit supporting structure without the upright column is further improved in that the inclined strut further comprises a second inclined beam which is arranged in a staggered mode with the first inclined beam, and the second inclined beam and the first inclined beam are staggered in an X-shaped mode and supported between two adjacent horizontal struts.
The foundation pit supporting structure without the upright columns is further improved in that each horizontal support comprises a plurality of cross beams which are positioned on the same horizontal plane and are arranged at intervals along the enclosure structure and connecting beams which are arranged at intervals and connected between every two adjacent cross beams, and the connecting beams are arranged corresponding to the vertical beams and are fixedly connected with the vertical beams.
The foundation pit supporting structure without the upright columns is further improved in that a crown beam is formed by pouring at the top of the enclosure structure;
and a horizontal support is formed between the two opposite crown beams in a pouring way.
The foundation pit supporting structure without the upright columns is further improved in that at least one waist beam is formed on the inner wall of the enclosure structure in a pouring mode;
horizontal supports are formed between the opposite wales in a pouring mode.
The invention provides a construction method of a foundation pit supporting structure without a stand column, which comprises the following steps:
constructing a building enclosure around an area of a foundation pit to be excavated;
excavating the region of the foundation pit to be excavated, sequentially arranging at least two horizontal supports at intervals on the inner wall of the enclosure structure along the excavation depth, and positioning the horizontal support close to the bottom of the foundation pit above the underground structure to be constructed;
a plurality of vertical beams are arranged between two adjacent horizontal supports at intervals;
and an inclined strut is arranged between two adjacent horizontal struts and is correspondingly connected with the vertical beam.
The construction method of the foundation pit supporting structure without the upright posts is further improved in that each horizontal support comprises a plurality of cross beams which are positioned on the same horizontal plane and are arranged at intervals along the enclosure structure;
and a connecting beam is arranged between two adjacent cross beams corresponding to the vertical beam, and the connecting beam is correspondingly and fixedly connected with the vertical beam.
Drawings
Figure 1 is a front cross-sectional view of one embodiment of the present invention of a pillarless excavation supporting structure.
Figure 2 is a front cross-sectional view of another embodiment of the present invention of a pillarless excavation supporting structure.
Figure 3 is a front cross-sectional view of yet another embodiment of the present invention foundation pit support structure without columns.
Figure 4 is a front cross-sectional view of yet another embodiment of the present invention foundation pit support structure without columns.
Figure 5 is a top view of one embodiment of the present invention without a column of the foundation pit supporting structure.
Figure 6 is a top view of another embodiment of the present invention without a post.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1, the invention provides a foundation pit supporting structure without a stand column, wherein horizontal supports are sequentially arranged along the excavation depth, vertical beams are connected between the horizontal supports, inclined supports are obliquely arranged to support the interior of a foundation pit, the interior of the foundation pit can be effectively supported under the condition that the stand column is not arranged, the construction of a later-stage underground structure is not influenced, the problem that the excavation of the foundation pit and the construction of the underground structure are influenced due to the existence of the stand column is solved, the supporting structure without the stand column is utilized to support the foundation pit, the influence on the later-stage underground structure construction is avoided, the water leakage hidden danger is reduced, and the construction quality is ensured. The following describes the structure of the foundation pit without the vertical column according to the present invention with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a front cross-sectional view of an embodiment of a support structure for a foundation pit without columns according to the present invention. The present invention will be described with reference to fig. 1.
As shown in fig. 1, the foundation pit supporting structure without columns of the present invention includes:
the building envelope 11 is arranged around the region of the foundation pit 21 to be excavated;
at least two horizontal supports are sequentially arranged along the excavation depth of the foundation pit 21, the horizontal supports are horizontally supported between the enclosure structures 11, and the horizontal support close to the bottom of the foundation pit 21 is positioned above the underground structure to be constructed;
the vertical beams 13 are arranged at intervals and vertically connected between two adjacent horizontal supports; and
and the plurality of inclined struts are obliquely connected between the two adjacent horizontal struts and are fixedly connected with the vertical beam 13.
Specifically, a crown beam 111 is cast at the top of the enclosure structure 11;
horizontal supports are cast between the two opposite crown beams 111.
More specifically, at least one wale 112 is formed on the inner wall of the building envelope 11 by casting;
horizontal bracing is cast between the opposing wales 112.
Preferably, as shown in fig. 3 and 4, the horizontal support is provided with three passages.
As a preferred embodiment of the present invention, referring to fig. 1, the inclined strut includes a plurality of first inclined beams 14 connected end to end, and the first inclined beams 14 are assembled into a wave shape.
Specifically, as shown in fig. 2, the inclined strut further includes a second inclined beam 15 disposed in a staggered manner with the first inclined beam 14, and the second inclined beam 15 and the first inclined beam 14 are staggered in an X-shape and supported between two adjacent horizontal supports to enhance the supporting effect.
Further, as shown in fig. 5 and fig. 6, each horizontal support includes a plurality of cross beams 12 located on the same horizontal plane and spaced along the enclosure 11, and a connecting beam 121 spaced and connected between two adjacent cross beams 12, where the connecting beam 121 is disposed corresponding to the vertical beam 13 and fixedly connected to the vertical beam 13.
Preferably, a connecting beam 121 may be disposed between each adjacent cross beam 12, and the connecting beam 121 may be disposed between the adjacent cross beams 12 at intervals.
The specific embodiment of the invention is as follows:
take the example of setting three horizontal supports;
before the foundation pit 21 is excavated, constructing a building enclosure 11 around the area of the foundation pit 21 to be excavated, and further excavating the foundation pit 21;
horizontal supports are arranged at intervals along the excavation depth of the foundation pit 21, each horizontal support comprises a plurality of cross beams 12 in the same plane, the cross beams 12 are arranged at intervals along the enclosure structure 11, and a connecting beam 121 is arranged between every two adjacent cross beams 12 in the same horizontal plane;
a vertical beam 13 is arranged between two adjacent horizontal supports, namely the vertical beam 13 is arranged between two adjacent cross beams 12;
an inclined strut is arranged between two adjacent cross beams 12, and the inclined strut and the connecting beam 121 are correspondingly connected with the vertical beam 13;
and after the horizontal support, the vertical beam 13 and the inclined support reach the set strength, continuously excavating downwards to the set elevation to form a complete foundation pit 21, constructing an underground structure in the foundation pit 21, and at the moment, not having a stand column at the position of the underground structure to be constructed in the foundation pit 21, so that the construction of the underground structure is not influenced.
The invention also provides a construction method of the foundation pit supporting structure without the stand column, which comprises the following steps:
constructing a building enclosure 11 around the region of the foundation pit 21 to be excavated;
excavating the region of the foundation pit 21 to be excavated, sequentially arranging at least two horizontal supports at intervals on the inner wall of the enclosure structure 11 along the excavation depth, and positioning the horizontal support close to the bottom of the foundation pit 21 above the underground structure to be constructed;
a plurality of vertical beams 13 are arranged between two adjacent horizontal supports at intervals;
an inclined diagonal brace is arranged between two adjacent horizontal braces, and the diagonal brace is correspondingly connected with the vertical beam 13.
Preferably, the horizontal support is provided with three channels.
Furthermore, each horizontal support comprises a plurality of cross beams 12 which are positioned on the same horizontal plane and are arranged along the building enclosure 11 at intervals;
and a connecting beam 121 is arranged between two adjacent cross beams 12 corresponding to the vertical beam 13, and the connecting beam 121 is correspondingly and fixedly connected with the vertical beam 13.
The concrete operation mode of the construction method provided by the invention is as follows:
take the example of setting three horizontal supports;
before the foundation pit 21 is excavated, constructing a building enclosure 11 around the area of the foundation pit 21 to be excavated, and further excavating the foundation pit 21;
horizontal supports are arranged at intervals along the excavation depth of the foundation pit 21, each horizontal support comprises a plurality of cross beams 12 in the same plane, the cross beams 12 are arranged at intervals along the enclosure structure 11, and a connecting beam 121 is arranged between every two adjacent cross beams 12 in the same horizontal plane;
a vertical beam 13 is arranged between two adjacent horizontal supports, namely the vertical beam 13 is arranged between two adjacent cross beams 12;
an inclined strut is arranged between two adjacent cross beams 12, and the inclined strut and the connecting beam 121 are correspondingly connected with the vertical beam 13;
and after the horizontal support, the vertical beam 13 and the inclined support reach the set strength, continuously excavating downwards to the set elevation to form a complete foundation pit 21, constructing an underground structure in the foundation pit 21, and at the moment, not having a stand column at the position of the underground structure to be constructed in the foundation pit 21, so that the construction of the underground structure is not influenced.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (8)
1. The utility model provides a foundation ditch supporting construction of no stand which characterized in that includes:
the enclosure structure is arranged around the region of the foundation pit to be excavated;
the horizontal supports are horizontally supported between the enclosure structures, and the horizontal support close to the bottom of the foundation pit is positioned above an underground structure to be constructed;
the vertical beams are arranged at intervals and are vertically connected between two adjacent horizontal supports; and
and the plurality of inclined struts are obliquely connected between the two adjacent horizontal struts and are fixedly connected with the vertical beam.
2. The support structure for a foundation pit without columns of claim 1, wherein the braces comprise a plurality of first inclined beams connected end to end, and the first inclined beams are spliced to form a wave shape.
3. The pillarless foundation pit supporting structure of claim 2, wherein the inclined struts further comprise second inclined beams arranged in a staggered manner with respect to the first inclined beams, and the second inclined beams and the first inclined beams are staggered in an X-shape and supported between two adjacent horizontal struts.
4. The support structure of a foundation pit without columns of claim 1, wherein each horizontal support comprises a plurality of cross beams spaced along the enclosure at the same horizontal plane and a connecting beam spaced and connected between two adjacent cross beams, and the connecting beam is disposed corresponding to the vertical beam and fixedly connected with the vertical beam.
5. The pillarless foundation pit support structure of claim 1, wherein a crown beam is cast on top of the enclosure;
and the horizontal support is formed between two opposite crown beams in a pouring way.
6. The pillarless foundation pit supporting structure of claim 1, wherein the interior wall of the enclosure is cast with at least one wale;
and the horizontal support is formed by casting between the opposite waist beams.
7. A method of constructing a support structure for a foundation pit without a column according to claim 1, comprising the steps of:
constructing a building enclosure around an area of a foundation pit to be excavated;
excavating the region of the foundation pit to be excavated, sequentially arranging at least two horizontal supports on the inner wall of the enclosure structure at intervals along the excavation depth, and positioning the horizontal support close to the bottom of the foundation pit above the underground structure to be constructed;
a plurality of vertical beams are arranged between two adjacent horizontal supports at intervals;
and an inclined strut is arranged between every two adjacent horizontal struts and is correspondingly connected with the vertical beam.
8. The method of constructing a support structure for a foundation pit without a column of claim 7, wherein each of the horizontal supports comprises a plurality of beams located at the same horizontal plane and spaced along the enclosure;
and a connecting beam is arranged between two adjacent cross beams corresponding to the vertical beam, and the connecting beam is correspondingly and fixedly connected with the vertical beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010097345.9A CN111173000A (en) | 2020-02-17 | 2020-02-17 | Foundation pit supporting structure without stand column and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010097345.9A CN111173000A (en) | 2020-02-17 | 2020-02-17 | Foundation pit supporting structure without stand column and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111173000A true CN111173000A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010097345.9A Pending CN111173000A (en) | 2020-02-17 | 2020-02-17 | Foundation pit supporting structure without stand column and construction method thereof |
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| Country | Link |
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| CN (1) | CN111173000A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575789A (en) * | 2020-11-30 | 2021-03-30 | 广西大学 | Diagonal space truss foundation pit inner support system |
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| CN1751157A (en) * | 2003-02-14 | 2006-03-22 | 韩万烨 | Prestressed scaffolding system |
| CN106193054A (en) * | 2016-09-09 | 2016-12-07 | 中建三局集团有限公司 | A kind of support system for subway foundation pit and construction method thereof |
| CN108331021A (en) * | 2018-03-22 | 2018-07-27 | 重庆建工第七建筑工程有限责任公司 | Half cap excavation method large span bedding structure of one kind and its construction method |
| JP2018188874A (en) * | 2017-05-08 | 2018-11-29 | 清水建設株式会社 | Earth retaining structure and construction method of the same |
| CN109183807A (en) * | 2018-09-17 | 2019-01-11 | 江苏东合南岩土科技股份有限公司 | Removable bracing members and its construction method |
| CN212001142U (en) * | 2020-02-17 | 2020-11-24 | 中国建筑第八工程局有限公司 | Foundation pit supporting structure without stand column |
-
2020
- 2020-02-17 CN CN202010097345.9A patent/CN111173000A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1751157A (en) * | 2003-02-14 | 2006-03-22 | 韩万烨 | Prestressed scaffolding system |
| CN106193054A (en) * | 2016-09-09 | 2016-12-07 | 中建三局集团有限公司 | A kind of support system for subway foundation pit and construction method thereof |
| JP2018188874A (en) * | 2017-05-08 | 2018-11-29 | 清水建設株式会社 | Earth retaining structure and construction method of the same |
| CN108331021A (en) * | 2018-03-22 | 2018-07-27 | 重庆建工第七建筑工程有限责任公司 | Half cap excavation method large span bedding structure of one kind and its construction method |
| CN109183807A (en) * | 2018-09-17 | 2019-01-11 | 江苏东合南岩土科技股份有限公司 | Removable bracing members and its construction method |
| CN212001142U (en) * | 2020-02-17 | 2020-11-24 | 中国建筑第八工程局有限公司 | Foundation pit supporting structure without stand column |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112575789A (en) * | 2020-11-30 | 2021-03-30 | 广西大学 | Diagonal space truss foundation pit inner support system |
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