CN110761295A - Prefabricated assembled concrete pipe props structure - Google Patents
Prefabricated assembled concrete pipe props structure Download PDFInfo
- Publication number
- CN110761295A CN110761295A CN201911029389.1A CN201911029389A CN110761295A CN 110761295 A CN110761295 A CN 110761295A CN 201911029389 A CN201911029389 A CN 201911029389A CN 110761295 A CN110761295 A CN 110761295A
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- China
- Prior art keywords
- concrete pipe
- pipe support
- precast
- precast concrete
- sections
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- 239000004567 concrete Substances 0.000 title claims abstract description 77
- 239000011178 precast concrete Substances 0.000 claims abstract description 43
- 229910000831 Steel Inorganic materials 0.000 claims description 50
- 239000010959 steel Substances 0.000 claims description 50
- 230000002787 reinforcement Effects 0.000 claims description 12
- 210000003205 muscle Anatomy 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 13
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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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
Abstract
The invention belongs to the technical field of foundation pit engineering, and particularly relates to a prefabricated assembled concrete pipe support structure which comprises two enclosure structures and a concrete pipe support; one end of the concrete pipe support is fixedly connected with one of the building enclosures, and the other end of the concrete pipe support is supported on the other building enclosure through a pre-stressing device; the concrete pipe props includes a plurality of sections precast concrete pipe, and can dismantle the connection between two sections adjacent precast concrete pipe. In the prefabricated assembly type concrete pipe support structure provided by the invention, the concrete pipe support is erected in foundation pit engineering after being transported to a site for assembly through prefabricating a plurality of sections of prefabricated concrete pipes in a factory, and has higher rigidity; one end of the concrete pipe support is fixed with the enclosure structure, and the other end of the concrete pipe support is supported on the other enclosure structure through the pre-stressing device, so that supporting force can be formed quickly, and the deformation of the foundation pit can be controlled quickly and for a long time; in addition, the precast concrete pipe can also be recycled.
Description
Technical Field
The invention belongs to the technical field of foundation pit engineering, and particularly relates to a prefabricated assembled concrete pipe support structure.
Background
Cast-in-place reinforced concrete supports and steel supports are common support structures in foundation pit engineering, and the two support structures have advantages and disadvantages respectively. The cast-in-place reinforced concrete support has the advantages of high specific rigidity, strong deformation resistance and good integrity, but needs to be cast by a formwork on site, so that the construction time is long, the strength is formed in a long time, the deformation of a foundation pit cannot be quickly controlled, the foundation pit cannot be recycled, and the great engineering waste is caused. The steel support is a prefabricated steel pipe, the construction speed is high, the supporting force can be quickly formed, the steel support can be recycled, the deformation of the foundation pit can be quickly controlled, the rigidity is low, and the deformation resistance is poor. Therefore, there is a need for a precast concrete pipe support structure that overcomes the above problems.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a prefabricated concrete pipe support structure which has higher rigidity and can quickly form supporting force.
In order to achieve the purpose, the technical scheme of the invention is that the prefabricated assembled concrete pipe support structure comprises two enclosing structures and a concrete pipe support; one end of the concrete pipe support is fixedly connected with one of the building enclosures, and the other end of the concrete pipe support is supported on the other building enclosure through a pre-stressing device; the concrete pipe props includes a plurality of sections precast concrete pipe, and can dismantle the connection between two sections adjacent precast concrete pipe.
Furthermore, end steel plates are arranged at two ends of each section of the precast concrete pipe, and the end steel plates close to each other on the two adjacent sections of the precast concrete pipes are connected through bolts.
Further, the end steel plate has an edge portion protruding beyond an outer edge of the precast concrete pipe, and the edge portion is provided with bolt holes through which the bolts pass.
Furthermore, two adjacent sections of the precast concrete pipes are connected through a plurality of bolts, and the plurality of bolts are arranged at intervals along the circumferential direction of the precast concrete pipes.
Furthermore, an embedded steel plate is embedded in the enclosure structure, and the concrete pipe support is connected with the embedded steel plate through an end steel plate in a welding mode.
Furtherly, every section precast concrete all is equipped with steel reinforcement cage skeleton in the pipe, steel reinforcement cage skeleton includes many main muscle and many stirrups, and many stirrups are followed the length direction interval of precast concrete pipe sets up, and many main muscle are followed the inner circle of stirrup distributes and extends along the length direction of precast concrete pipe, the main muscle is connected with the stirrup and is formed steel reinforcement cage skeleton.
Furthermore, two ends of the concrete pipe support are also provided with anti-falling steel cables, one end of each anti-falling steel cable is fixed with the concrete pipe support, and the other end of each anti-falling steel cable is fixedly connected with the position, above the concrete pipe support, of the enclosure structure.
Compared with the prior art, the invention has the following beneficial effects:
(1) in the prefabricated assembly type concrete pipe support structure provided by the invention, the concrete pipe support is erected in foundation pit engineering after being transported to a site for assembly through prefabricating a plurality of sections of prefabricated concrete pipes in a factory, and has higher rigidity; one end of the concrete pipe support is fixed with the enclosure structure, and the other end of the concrete pipe support is supported on the other enclosure structure through the pre-stressing device, so that supporting force can be formed quickly, and the deformation of the foundation pit can be controlled quickly and for a long time;
(2) the prefabricated assembled concrete pipe support structure provided by the invention can be recycled, has a fast construction progress, and solves a series of problems of traditional cast-in-place concrete support and steel support.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of a prefabricated concrete pipe support structure according to an embodiment of the present invention;
fig. 2 is a schematic view of a prefabricated concrete pipe support structure according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line C-C of FIG. 2;
FIG. 4 is a cross-sectional view taken along line D-D of FIG. 2;
FIG. 5 is a schematic view at A in FIG. 1;
FIG. 6 is a schematic view at B of FIG. 1;
in the figure: 1. the anti-falling steel cable comprises a concrete pipe support 2, a building enclosure 3, bolts 4, a concrete structure 5, main reinforcements 6, stirrups 7, end steel plates 8, embedded steel plates 9, a pre-stressing device 10 and anti-falling steel cables.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 to 6, an embodiment of the present invention provides a prefabricated assembled concrete pipe support structure, which includes two building envelopes 2 and a concrete pipe support 1; one end of the concrete pipe support 1 is fixedly connected with one of the building enclosures 2, and the other end of the concrete pipe support is supported on the other building enclosure 2 through a pre-stressing device 9; the concrete pipe support 1 comprises a plurality of sections of precast concrete pipes, and the adjacent two sections of precast concrete pipes are detachably connected. In the prefabricated assembly type concrete pipe support structure provided by the invention, the concrete pipe support 1 is erected in foundation pit engineering after being transported to a site for assembly through prefabricating a plurality of sections of prefabricated concrete pipes in a factory, and has higher rigidity; one end of the concrete pipe support 1 is fixed with the enclosure structure 2, and the other end of the concrete pipe support is supported on the other enclosure structure 2 through the pre-stressing device 9, so that supporting force can be formed quickly, and the deformation of the foundation pit can be controlled quickly and for a long time; in addition, because the adjacent two sections of precast concrete pipes are detachably connected, the construction progress is fast, and the precast concrete pipes can be recycled.
Furthermore, both ends of each section of precast concrete pipe are provided with end steel plates 7, and the end steel plates 7 which are close to each other on the two adjacent sections of precast concrete pipes are connected through bolts 3. Preferably, the end steel plate 7 has an edge portion protruding beyond the outer edge of the precast concrete pipe, and the edge portion is provided with a bolt 3 hole through which the bolt 3 passes. As shown in fig. 2 and 4, the part of the outer edge of the end steel plate 7 at the two ends of each section of precast concrete pipe, which protrudes out of the outer edge of the precast concrete pipe, is an edge part, and the edge part is provided with a bolt 3 hole, when assembling, the bolt 3 penetrates through the bolt 3 hole to assemble and mold the end steel plates 7 of the two adjacent sections of precast concrete pipes on a construction site, so that the construction progress can be effectively accelerated; and when dismantling, take out in 3 holes through wearing bolt 3, alright realize the dismantlement of concrete pipe brace 1 self, the concrete pipe brace 1 that dismantles simultaneously can also recycle.
Furthermore, two adjacent sections of the precast concrete pipes are connected by a plurality of bolts 3, and the plurality of bolts 3 are arranged at intervals along the circumferential direction of the precast concrete pipe. As shown in fig. 4, the bolts 3 are uniformly arranged along the circumferential direction of the precast concrete pipe to realize the connection and extension of the precast concrete pipe, thereby improving the safety of the foundation pit construction.
Furthermore, an embedded steel plate 8 is embedded in the enclosure structure 2, and the concrete pipe support 1 is connected with the embedded steel plate 8 through an end steel plate 7 by welding. As shown in fig. 6, the connection between the concrete pipe brace 1 and the enclosure 2 is realized by welding the embedded steel plate 8 and the end steel plate 7 close to the end of the precast concrete pipe of the enclosure 2.
Further, all be equipped with steel reinforcement cage skeleton in every section precast concrete pipe, steel reinforcement cage skeleton includes many owner muscle 5 and many stirrups 6, and many stirrups 6 are followed the length direction interval of precast concrete pipe sets up, and many owner muscle 5 are followed the inner circle of stirrup 6 distributes and extends along the length direction of precast concrete pipe, main muscle 5 is connected with stirrup 6 and is formed steel reinforcement cage skeleton, as shown in fig. 3. The number of the main reinforcements 5 and the stirrups 6 in the embodiment is determined according to the specific length, diameter and strength requirement of each section of the precast concrete pipe, and the steel reinforcement cage framework can also adopt other forms.
Furthermore, two ends of the concrete pipe support 1 are also provided with anti-falling steel cables 10, one end of each anti-falling steel cable 10 is fixed to the concrete pipe support 1, and the other end of each anti-falling steel cable 10 is fixedly connected with the position, located above the concrete pipe support 1, of the enclosure structure 2. As shown in fig. 5 and 6, one end of the anti-falling steel cable 10 is wound and fixed on the concrete pipe support 1, and the other end is fixedly connected with the enclosure structure 2 above the concrete pipe support 1, so as to further improve the safety of the foundation pit construction.
The pre-stressing device 9 in this embodiment may adopt a jack form, the jack is placed between the end of the concrete pipe support 1 and the enclosure structure 2, and the base end and the working end of the jack respectively abut against the enclosure structure 2 and the concrete pipe support 1, and by controlling the extension of the working end of the jack, the support of the concrete pipe support 1 is supported on the enclosure structures on both sides to form a supporting force, so as to effectively control the deformation of the foundation pit, and facilitate the construction of the underground structure between the enclosure structures.
The prefabricated assembled concrete pipe support structure is suitable for foundation pit engineering, such as construction of an underground station, a plurality of inner supports are usually required to be arranged in the depth direction of a foundation pit according to the depth of the underground station, when open cut construction is adopted, the first support can pour two ends of the concrete pipe support into a crown beam, and the second support and subsequent supports can be erected according to the prefabricated assembled concrete pipe support structure; when the cover-excavation semi-top-down construction is adopted, the inner support can also be erected by adopting the prefabricated assembled concrete pipe support structure; the prefabricated concrete pipe support structure has higher rigidity, effectively controls the deformation of a foundation pit, and can quickly form a supporting force and accelerate the construction progress.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The utility model provides a prefabricated assembled concrete pipe props structure which characterized in that: the concrete pipe support comprises two building envelopes and a concrete pipe support; one end of the concrete pipe support is fixedly connected with one of the building enclosures, and the other end of the concrete pipe support is supported on the other building enclosure through a pre-stressing device; the concrete pipe props includes a plurality of sections precast concrete pipe, and can dismantle the connection between two sections adjacent precast concrete pipe.
2. A precast assembled concrete pipe support structure as set forth in claim 1, wherein: and end steel plates are arranged at two ends of each section of the precast concrete pipe, and the end steel plates close to each other on the adjacent two sections of the precast concrete pipes are connected through bolts.
3. A precast assembled concrete pipe support structure as set forth in claim 2, wherein: the end steel plate is provided with an edge part which protrudes out of the outer edge of the precast concrete pipe, and the edge part is provided with bolt holes for the bolts to pass through.
4. A precast assembled concrete pipe support structure as set forth in claim 3, wherein: two adjacent sections of precast concrete pipes are connected through a plurality of bolts, and the plurality of bolts are arranged at intervals along the circumferential direction of the precast concrete pipes.
5. A precast assembled concrete pipe support structure as set forth in claim 2, wherein: the concrete pipe support is connected with the embedded steel plate through welding through an end steel plate.
6. A precast assembled concrete pipe support structure as set forth in claim 1, wherein: every section of precast concrete all is equipped with steel reinforcement cage skeleton in the pipe, steel reinforcement cage skeleton includes many main muscle and many stirrups, and many stirrups are followed the length direction interval of precast concrete pipe sets up, and many main muscle are followed the inner circle of stirrup distributes and extends along the length direction of precast concrete pipe, main muscle is connected with the stirrup and is formed steel reinforcement cage skeleton.
7. A precast assembled concrete pipe support structure as set forth in claim 1, wherein: the two ends of the concrete pipe support are also provided with anti-falling steel cables, one end of each anti-falling steel cable is fixed with the concrete pipe support, and the other end of each anti-falling steel cable is fixedly connected with the position, above the concrete pipe support, of the enclosure structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911029389.1A CN110761295A (en) | 2019-10-28 | 2019-10-28 | Prefabricated assembled concrete pipe props structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911029389.1A CN110761295A (en) | 2019-10-28 | 2019-10-28 | Prefabricated assembled concrete pipe props structure |
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| Publication Number | Publication Date |
|---|---|
| CN110761295A true CN110761295A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911029389.1A Pending CN110761295A (en) | 2019-10-28 | 2019-10-28 | Prefabricated assembled concrete pipe props structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012233349A (en) * | 2011-05-02 | 2012-11-29 | Toda Constr Co Ltd | Earth retaining method |
| CN206034458U (en) * | 2016-08-30 | 2017-03-22 | 中铁三局集团有限公司 | Structure of falling is prevented in steel shotcrete in SMW worker method stake envelope foundation ditch |
| CN107217675A (en) * | 2017-07-13 | 2017-09-29 | 中铁第四勘察设计院集团有限公司 | A kind of concrete-filled steel tubular hollow supporting construction suitable for Metro Deep Excavation |
| CN107964959A (en) * | 2017-12-05 | 2018-04-27 | 广州鑫桥建筑工程有限公司 | A kind of prefabricated assembled concrete support system |
| CN211368733U (en) * | 2019-10-28 | 2020-08-28 | 中铁第四勘察设计院集团有限公司 | Prefabricated assembled concrete pipe props structure |
-
2019
- 2019-10-28 CN CN201911029389.1A patent/CN110761295A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012233349A (en) * | 2011-05-02 | 2012-11-29 | Toda Constr Co Ltd | Earth retaining method |
| CN206034458U (en) * | 2016-08-30 | 2017-03-22 | 中铁三局集团有限公司 | Structure of falling is prevented in steel shotcrete in SMW worker method stake envelope foundation ditch |
| CN107217675A (en) * | 2017-07-13 | 2017-09-29 | 中铁第四勘察设计院集团有限公司 | A kind of concrete-filled steel tubular hollow supporting construction suitable for Metro Deep Excavation |
| CN107964959A (en) * | 2017-12-05 | 2018-04-27 | 广州鑫桥建筑工程有限公司 | A kind of prefabricated assembled concrete support system |
| CN211368733U (en) * | 2019-10-28 | 2020-08-28 | 中铁第四勘察设计院集团有限公司 | Prefabricated assembled concrete pipe props structure |
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