CN111270692A - Construction method and structure of assembled anchor rod lattice beam - Google Patents
Construction method and structure of assembled anchor rod lattice beam Download PDFInfo
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- CN111270692A CN111270692A CN202010224437.9A CN202010224437A CN111270692A CN 111270692 A CN111270692 A CN 111270692A CN 202010224437 A CN202010224437 A CN 202010224437A CN 111270692 A CN111270692 A CN 111270692A
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- prefabricated
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- anchor rod
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- 238000010276 construction Methods 0.000 title claims abstract description 51
- 238000009412 basement excavation Methods 0.000 claims abstract description 10
- 238000004873 anchoring Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000007596 consolidation process Methods 0.000 abstract description 3
- 238000009417 prefabrication Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000009966 trimming Methods 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
- E02D17/20—Securing of slopes or inclines
- E02D17/205—Securing of slopes or inclines with modular blocks, e.g. pre-fabricated
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
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- Engineering & Computer Science (AREA)
- Structural Engineering (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)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a construction method structure of an assembled anchor rod lattice beam, which decomposes the existing integrally cast anchor rod lattice beam into two different prefabricated members, namely a cross prefabricated member and an end socket prefabricated member; during specific construction, the work efficiency of slope protection is improved by adopting a field assembly mode, so that the work efficiency of slope protection is close to the work efficiency of slope excavation, and the standard requirement of the slope from top to top for excavation of the first-level protection is met. The invention can transport the prefabricated components to the construction site for assembly construction after the centralized prefabrication of the prefabricated components in a professional prefabrication field is finished. Because the time for erecting a template, pouring concrete and waiting for concrete consolidation is not needed like the prior art, the work efficiency of slope protection is greatly accelerated. Therefore, the requirement of the safety standard of side slope protection is met, the first-level protection can be excavated from top to bottom for construction, and the safety risk that landslide and high falling objects injure people is reduced.
Description
Technical Field
The invention relates to a construction method and a structure of an assembled anchor rod lattice beam, and belongs to the technical field of roadbed slope protection.
Background
According to the safety specification of slope protection construction, a primary protection level is excavated from top to bottom to ensure the construction safety. However, the slope protection construction in the prior art adopts an integrally cast anchor rod lattice beam. Firstly, drilling an anchor rod or an anchor cable hole on an excavated side slope, then fixing the anchor rod or the anchor cable in the hole, then arranging a template on the side slope, binding reinforcing steel bars in the template, and finally pouring the concrete frame beam and the anchor rod or the anchor cable into a whole by adopting a concrete cast-in-place method, so that the time and the labor are wasted, the time for waiting concrete to be solidified is particularly long, and at most, only one-stage protection construction can be finished in one day. If the construction is carried out according to the slope protection construction specification, the construction period is particularly long. Therefore, in the prior art, the side slope is usually dug to the bottom of the slope, and then the side slope protection construction is carried out. After the side slope is excavated, the surface soil layer structure is damaged, so that landslide and high falling risk are easy to occur, the safety risk of casualty accidents of constructors can be caused, and the quality of the graded construction engineering is not easy to control. Thus, the prior art still has deficiencies.
Disclosure of Invention
The invention aims to provide a construction method and a structure of an assembled anchor rod lattice beam, which replace the existing integrally cast lattice beam with the assembled anchor rod lattice beam, effectively improve the protection work efficiency, complete the protection construction of a side slope in a short time and create feasible conditions for the safety specification of the side slope protection construction, thereby reducing the safety risk and overcoming the defects of the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a construction method of an assembled anchor rod lattice beam, which decomposes the existing integrally cast anchor rod lattice beam into two different prefabricated parts, namely a cross prefabricated part and an end socket prefabricated part; during specific construction, the work efficiency of slope protection is improved by adopting a field assembly mode, so that the work efficiency of slope protection is close to the work efficiency of slope excavation, and the standard requirement of the slope from top to top for excavation of the first-level protection is met.
In the construction method, the cross-shaped prefabricated member and the end socket prefabricated member are customized to qualified prefabricated member specialized factories.
In the construction method, the middle of the cross-shaped prefabricated member is provided with an anchoring hole, and the cross-shaped prefabricated member is fixedly connected with an exposed part of an anchor rod anchored in the side slope through the anchoring hole through a nut.
In the construction method, the periphery of the cross-shaped prefabricated member is provided with connecting wings, the connecting wings are provided with connecting gaps, and the connecting gaps are provided with a group of connecting holes; and the group of connecting holes are connected with the connecting holes on the adjacent cross prefabricated members through the group of bolt assemblies to form the frame beam.
In the construction method, the cross-shaped prefabricated members are positioned at the edge of the side slope, and the connecting gaps on the connecting wings which are not connected with the adjacent cross-shaped prefabricated members are filled up through the end socket prefabricated members; the head prefabricated part is connected with the connecting gap through a group of bolt assemblies.
The structure of the assembled anchor rod lattice beam comprises cross prefabricated parts which are arranged in a row and column mode, wherein the center of each cross prefabricated part is fixedly connected with the end part of an anchor rod fixed on a side slope, and adjacent cross prefabricated parts are connected through bolts, washers and nuts; the cross prefabricated member end head of the side slope edge which is not connected with the adjacent cross prefabricated member is connected with the end socket prefabricated member.
In the structure, the center of the cross-shaped prefabricated part is of a cylinder structure, and the center of the cylinder is provided with an anchoring hole; connecting wings which are radially arranged are arranged on the periphery of the column body, and an included angle between each connecting wing and each connecting wing is a right angle; the connecting wing is provided with a connecting gap, and the connecting gap is provided with a group of connecting holes.
In the structure, the end socket prefabricated part is used for filling up the connecting gap of the edge connecting wing; the end socket prefabricated part is L-shaped, the shape and size of a rectangular notch of the L shape correspond to those of a connecting notch on the connecting wing, and a group of connecting holes corresponding to the cross-shaped prefabricated part are formed in the rectangular notch.
In the structure, reinforcing steel meshes are pre-embedded in the concrete around the anchoring holes and the connecting holes of the cross prefabricated member and the end socket prefabricated member.
In the structure, the anchoring holes and the connecting holes are both step-shaped counter bores; a washer and a nut which are used for connecting the anchor rod are positioned in the counter bore of the anchoring hole after being screwed; the bolt head, the washer and the nut which are used for connecting the two cross-shaped prefabricated members and connecting the cross-shaped prefabricated members and the end socket prefabricated members are positioned in the counter bore of the connecting hole after being screwed tightly; the bolt head, washer and nut do not protrude beyond the preform surface.
Due to the adoption of the technical scheme, compared with the prior art, the invention adopts the construction process of the assembled anchor cable sash beam, and can transport the prefabricated components to a construction site for assembly construction after the prefabricated components are integrally prefabricated in a professional prefabrication field. Because the time for erecting a template, pouring concrete and waiting for concrete consolidation is not needed like the prior art, the work efficiency of slope protection is greatly accelerated. Therefore, the requirement of the safety standard of side slope protection is met, the first-level protection can be excavated from top to bottom for construction, and the safety risk that landslide and high falling objects injure people is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
The labels in the figures are: 1-roadbed slope, 2-anchor rods, 3-cross prefabricated parts, 4-end enclosure prefabricated parts, 5-cylinders, 6-anchoring holes, 7-connecting wings, 8-connecting gaps, 9-connecting holes, 10-rectangular gaps, 11-washers, 12-nuts and 13-bolts.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The invention relates to a construction method of an assembled anchor rod lattice beam, which decomposes the existing integrally cast anchor rod lattice beam into two different prefabricated parts, namely a cross prefabricated part and an end socket prefabricated part; during specific construction, the work efficiency of slope protection is improved by adopting a field assembly mode, so that the work efficiency of slope protection is close to the work efficiency of slope excavation, and the standard requirement of the slope from top to top for excavation of the first-level protection is met. The cross prefabricated member and the end socket prefabricated member are customized to qualified prefabricated member specialized factories. And an anchoring hole is arranged in the middle of the cross-shaped prefabricated member and is fixedly connected with an exposed part of an anchor rod anchored in the side slope through a nut. The periphery of the cross-shaped prefabricated member is provided with connecting wings, the connecting wings are provided with connecting gaps, and the connecting gaps are provided with a group of connecting holes; and the group of connecting holes are connected with the connecting holes on the adjacent cross prefabricated members through the group of bolt assemblies to form the frame beam. The cross-shaped prefabricated members are positioned at the edge of the side slope, and connecting gaps on the connecting wings which are not connected with the adjacent cross-shaped prefabricated members are filled up through the end socket prefabricated members; the head prefabricated part is connected with the connecting gap through a group of bolt assemblies.
The structure of the assembled anchor rod lattice beam according to the present invention, which is constructed according to the above method, as shown in fig. 1, includes cross prefabricated members 3 arranged in rows and columns, the center of each cross prefabricated member 3 is fixedly connected to the end of an anchor rod 2 fixed on a slope 1, and adjacent cross prefabricated members 3 are connected to each other through bolts 13, washers 11 and nuts 12; the end of the cross prefabricated member 3 which is not connected with the adjacent cross prefabricated member 3 at the edge of the side slope 1 is connected with the end socket prefabricated member 4. The center of the cross-shaped prefabricated part 3 is of a cylinder 5 structure, and the center of the cylinder 5 is provided with an anchoring hole 6; connecting wings 7 which are radially arranged are arranged on the periphery of the column body 5, and an included angle between each connecting wing 7 and each connecting wing 7 is a right angle; the connecting wing 7 is provided with a connecting gap 8, and the connecting gap 8 is provided with a group of connecting holes 9. The end socket prefabricated part 4 is used for supplementing a connecting gap 8 of the edge connecting wing 7; the end socket prefabricated part 4 is L-shaped, the shape and size of a rectangular notch 10 of the L shape correspond to those of a connecting notch 8 on the connecting wing 7, and a group of connecting holes 9 corresponding to the cross-shaped prefabricated part 3 are formed in the rectangular notch 10. Reinforcing steel bar meshes (not shown in the figure because the reinforcing steel bar meshes are inside the prefabricated members) are pre-embedded in the concrete around the anchoring holes 6 and the connecting holes 9 of the cross prefabricated members 3 and the end socket prefabricated members 4. The anchoring holes 6 and the connecting holes 9 are both step-shaped counter bores; a washer 11 and a nut 12 for connecting the anchor rod 2 are positioned in the counter bore of the anchoring hole 6 after being screwed; the bolt head, the washer 11 and the nut 12 which are used for connecting the two cross-shaped prefabricated members 3 and connecting the cross-shaped prefabricated members 3 and the end socket prefabricated members 4 are positioned in the counter bore of the connecting hole 9 after being screwed tightly; neither the bolt head, washer 11 nor nut 12 protrudes beyond the preform surface.
In specific implementation, the existing integrally cast anchor rod sash beam is decomposed into two different prefabricated members, namely a cross prefabricated member and an end socket prefabricated member, and the working efficiency of slope protection is greatly accelerated because the time for erecting a template, casting concrete and waiting for concrete consolidation is not needed like the prior art. The invention adopts the field assembly method to protect the side slope, greatly shortens the time of protection construction, and creates feasible conditions for executing the side slope protection standard. Therefore, in the slope protection construction, the first-level protection first-level can be excavated from top to bottom until the protection construction of the whole slope is completed, and the potential safety hazard in the slope protection construction is greatly reduced.
Because the work efficiency of the slope protection is extremely high, the method can also be used for finishing the whole slope protection construction at one time after the whole slope excavation is finished.
The method comprises the steps of firstly determining a side slope protection scheme according to the size of a side slope, designing a side slope protection construction drawing, customizing a required prefabricated part to a qualified prefabricated part specialized factory according to the side slope protection construction drawing, and outsourcing an anchor rod and a required bolt assembly; and then, preparing work before slope protection is carried out, assembling the anchor rod lattice beam after the prefabricated member to be customized and the purchased anchor rod and bolt assembly are transported to a construction site, and finally pouring cement mortar into the gap of the assembled anchor rod lattice beam to complete construction.
The invention is characterized in that the prefabricated member is designed and customized to a professional factory in advance, and then the prefabricated member produced by the professional factory is transported to a construction site for assembly. And reinforcing steel bars do not need to be tied up on site in a construction site, a template is erected, and concrete is poured for construction. The fabrication of the prefabricated member and the excavation and the trimming of the side slope can be carried out simultaneously, so that the situation that two works are carried out in parallel is formed, the work efficiency is improved, and the engineering quality is also effectively ensured. As the on-site assembly is compared with the on-site binding of the steel bars, the erection of the template and the concrete pouring time are greatly reduced, the construction time of workers on the side slope is greatly shortened, and the safety risk of falling from a high place is reduced.
Claims (10)
1. A construction method of an assembled anchor rod lattice beam is characterized in that: the method is that the existing integrally cast anchor rod sash beam is decomposed into two different prefabricated parts, namely a cross prefabricated part and an end socket prefabricated part; during specific construction, the work efficiency of slope protection is improved by adopting a field assembly mode, so that the work efficiency of slope protection is close to the work efficiency of slope excavation, and the standard requirement of the slope from top to top for excavation of the first-level protection is met.
2. The construction method according to claim 1, wherein: the cross prefabricated member and the end socket prefabricated member are customized to qualified prefabricated member specialized factories.
3. The construction method according to claim 1, wherein: and an anchoring hole is formed in the middle of the cross-shaped prefabricated member and is fixedly connected with an exposed part of an anchor rod anchored in the side slope through a nut.
4. The construction method according to claim 1, wherein: the periphery of the cross-shaped prefabricated part is provided with connecting wings, connecting gaps are arranged on the connecting wings, and a group of connecting holes are arranged on the connecting gaps; and the group of connecting holes are connected with the connecting holes on the adjacent cross prefabricated members through the group of bolt assemblies to form the frame beam.
5. The construction method according to claim 1, wherein: the cross-shaped prefabricated members are positioned at the edge of the side slope, and connecting gaps on the connecting wings which are not connected with the adjacent cross-shaped prefabricated members are filled up through the end socket prefabricated members; the head prefabricated part is connected with the connecting gap through a group of bolt assemblies.
6. A structure of assembled anchor grid beams, constructed according to any one of the claims 1 to 5, comprising cross-shaped prefabricated members (3) arranged in rows and columns, characterized in that: the center of each cross-shaped prefabricated part (3) is respectively fixedly connected with the end part of an anchor rod (2) fixed on the side slope (1), and the adjacent cross-shaped prefabricated parts (3) are connected through a bolt (13), a washer (11) and a nut (12); the end of the cross prefabricated member (3) which is not connected with the adjacent cross prefabricated member (3) at the edge of the side slope (1) is connected with the end socket prefabricated member (4).
7. The structure of fabricated anchor grid beam of claim 6, wherein: the center of the cross-shaped prefabricated part (3) is of a cylinder (5) structure, and the center of the cylinder (5) is provided with an anchoring hole (6); connecting wings (7) which are radially arranged are arranged on the periphery of the column body (5), and an included angle between each connecting wing (7) and each connecting wing (7) is a right angle; the connecting wing (7) is provided with a connecting gap (8), and the connecting gap (8) is provided with a group of connecting holes (9).
8. The structure of fabricated anchor grid beam of claim 7, wherein: the end socket prefabricated part (4) is used for filling a connecting gap (8) of the edge connecting wing (7); the end socket prefabricated part (4) is L-shaped, the shape and size of a rectangular notch (10) of the L shape correspond to those of a connecting notch (8) on the connecting wing (7), and a group of connecting holes (9) corresponding to the cross-shaped prefabricated part (3) are formed in the rectangular notch (10).
9. The structure of fabricated anchor grid beam of claim 7, wherein: and reinforcing steel bar meshes are pre-embedded in the concrete around the anchoring holes (6) and the connecting holes (9) of the cross prefabricated member (3) and the end socket prefabricated member (4).
10. The structure of fabricated anchor grid beam of claim 7, wherein: the anchoring hole (6) and the connecting hole (9) are both stepped counter bores; a washer (11) and a nut (12) which are used for connecting the anchor rod (2) are positioned in the counter bore of the anchoring hole (6) after being screwed tightly; the bolt head, the washer (11) and the nut (12) which are used for connecting the two cross-shaped prefabricated members (3) and connecting the cross-shaped prefabricated members (3) and the end socket prefabricated members (4) are positioned in the counter bore of the connecting hole (9) after being screwed tightly; the bolt head, the washer (11) and the nut (12) do not protrude out of the surface of the prefabricated part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010224437.9A CN111270692A (en) | 2020-03-26 | 2020-03-26 | Construction method and structure of assembled anchor rod lattice beam |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010224437.9A CN111270692A (en) | 2020-03-26 | 2020-03-26 | Construction method and structure of assembled anchor rod lattice beam |
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| CN111270692A true CN111270692A (en) | 2020-06-12 |
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| CN202010224437.9A Pending CN111270692A (en) | 2020-03-26 | 2020-03-26 | Construction method and structure of assembled anchor rod lattice beam |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962637A (en) * | 2021-02-23 | 2021-06-15 | 中交路桥建设有限公司 | Assembled slope surface protection frame lattice beam and construction method thereof |
| CN114197502A (en) * | 2021-12-30 | 2022-03-18 | 广西路建工程集团有限公司 | Recyclable slope lamination green protection grid and construction method thereof |
| CN114991179A (en) * | 2022-06-10 | 2022-09-02 | 南华大学 | Prefabricated cross beam and prefabricated cross beam slope reinforcing structure and construction method |
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|---|---|---|---|---|
| CN105200997A (en) * | 2014-06-10 | 2015-12-30 | 湘潭大学 | Fabricated anchor rod sash ridge |
| CN105544460A (en) * | 2015-12-29 | 2016-05-04 | 深圳市福田建安建设集团有限公司 | Construction method of cast-in-situ planting type ecological concrete slope protection |
| CN109356173A (en) * | 2018-10-22 | 2019-02-19 | 中铁二院工程集团有限责任公司 | A kind of pin-connected panel anchor bolt frame girder construction and its construction method |
| CN109487805A (en) * | 2018-12-20 | 2019-03-19 | 中铁二院工程集团有限责任公司 | Pin-connected panel damping Anchored frame beam |
| CN110130367A (en) * | 2019-04-10 | 2019-08-16 | 北京铁科特种工程技术有限公司 | It is a kind of for the precast lattice beam of slope reinforcement and its production and construction method |
| CN209703525U (en) * | 2019-01-02 | 2019-11-29 | 深圳市路桥建设集团有限公司 | A kind of side slope precast assembly lattice girder connected by wet seam |
| CN212388567U (en) * | 2020-03-26 | 2021-01-22 | 中建四局贵州投资建设有限公司 | Structure of assembled anchor rod lattice beam |
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2020
- 2020-03-26 CN CN202010224437.9A patent/CN111270692A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105200997A (en) * | 2014-06-10 | 2015-12-30 | 湘潭大学 | Fabricated anchor rod sash ridge |
| CN105544460A (en) * | 2015-12-29 | 2016-05-04 | 深圳市福田建安建设集团有限公司 | Construction method of cast-in-situ planting type ecological concrete slope protection |
| CN109356173A (en) * | 2018-10-22 | 2019-02-19 | 中铁二院工程集团有限责任公司 | A kind of pin-connected panel anchor bolt frame girder construction and its construction method |
| CN109487805A (en) * | 2018-12-20 | 2019-03-19 | 中铁二院工程集团有限责任公司 | Pin-connected panel damping Anchored frame beam |
| CN209703525U (en) * | 2019-01-02 | 2019-11-29 | 深圳市路桥建设集团有限公司 | A kind of side slope precast assembly lattice girder connected by wet seam |
| CN110130367A (en) * | 2019-04-10 | 2019-08-16 | 北京铁科特种工程技术有限公司 | It is a kind of for the precast lattice beam of slope reinforcement and its production and construction method |
| CN212388567U (en) * | 2020-03-26 | 2021-01-22 | 中建四局贵州投资建设有限公司 | Structure of assembled anchor rod lattice beam |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112962637A (en) * | 2021-02-23 | 2021-06-15 | 中交路桥建设有限公司 | Assembled slope surface protection frame lattice beam and construction method thereof |
| CN114197502A (en) * | 2021-12-30 | 2022-03-18 | 广西路建工程集团有限公司 | Recyclable slope lamination green protection grid and construction method thereof |
| CN114991179A (en) * | 2022-06-10 | 2022-09-02 | 南华大学 | Prefabricated cross beam and prefabricated cross beam slope reinforcing structure and construction method |
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