CN220377794U - Modularized construction platform for foundation pit with narrow surrounding field - Google Patents
Modularized construction platform for foundation pit with narrow surrounding field Download PDFInfo
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- CN220377794U CN220377794U CN202321329876.1U CN202321329876U CN220377794U CN 220377794 U CN220377794 U CN 220377794U CN 202321329876 U CN202321329876 U CN 202321329876U CN 220377794 U CN220377794 U CN 220377794U
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- grid
- foundation pit
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- 238000010276 construction Methods 0.000 title claims abstract description 46
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 239000008187 granular material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 239000011150 reinforced concrete Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011236 particulate material Substances 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Abstract
The utility model relates to the technical field of foundation pits, and discloses a modularized construction platform for a foundation pit with a narrow surrounding field, which is used for expanding a construction field when the ground around the foundation pit is insufficient to meet construction requirements, and comprises a steel beam grid paved on a supporting beam of the foundation pit and a platform plate paved on the steel beam grid; the girder grid comprises girder and secondary girders, wherein the girder is an I-shaped girder formed by splicing a plurality of girder segments, grid units are formed by a plurality of girder segments aligned end to end and the secondary girders therebetween, and a platform plate is paved on each grid unit; one end of the girder segment is provided with a connecting clamping plate for connecting the girder segment and positioning the grid unit. According to the utility model, the steel beam grid units are arranged at the bottom of the platform plate, and the grid units are connected and aligned in batches by means of the connecting clamping plates, so that the paving of a construction platform with the steel beam grid at the bottom can be rapidly completed, and meanwhile, the platform can be rapidly disassembled and recycled.
Description
Technical Field
The utility model relates to the technical field of foundation pits, in particular to a modularized construction platform for a foundation pit with a narrow surrounding field.
Background
In the building construction process, a foundation pit is generally required to be excavated, materials are not suitable to be stacked in the foundation pit, construction equipment is treated, and vehicles pass through, and all operations are required to be carried out on the ground around the foundation pit. And in order to ensure safety, a certain safety distance is required to be formed from the foundation pit.
In urban centers and other areas, the space around the foundation pit is quite narrow due to the fact that the land price is high and the surrounding buildings are numerous, and the land space between the foundation pit and the surrounding barrier around the construction site often cannot meet the construction requirements. Therefore, the construction site needs to be expanded to the foundation pit in many times. Because the requirements of stacking materials, processing construction equipment and passing vehicles are met, the developed construction platform has high rigidity and strength requirements and cannot be paved by common scaffold boards on the worksite.
The foundation pit is provided with supporting beams for protecting walls above (the distance between the supporting beams is large), a layer of reinforced concrete sealing plates are poured on the supporting beams in the traditional construction site expanding method, the rigidity and strength of the reinforced concrete sealing plates can meet the requirements, but the processes of supporting templates, binding reinforcing steel bars, pouring concrete, curing and the like take much time, and the sealing plates are constructed to overground parts to break and cause pollution such as dust, and meanwhile, the sealing plates cannot be recycled.
Disclosure of Invention
The utility model provides a modularized construction platform for a foundation pit with a narrow surrounding field.
The technical problems to be solved are as follows: when the construction site is expanded into the foundation pit by using the reinforced concrete sealing plate, the working load is large, the pollution is large, and the materials can not be recycled.
In order to solve the technical problems, the utility model adopts the following technical scheme: a modular construction platform for a foundation pit with a narrow peripheral site is used for expanding a construction site when the ground around the foundation pit is insufficient to meet construction requirements, and comprises a steel beam grid paved on a supporting beam of the foundation pit and a platform plate paved on the steel beam grid and detachably and fixedly connected with the steel beam grid;
the girder steel grid comprises a plurality of girders parallel to each other and secondary girders perpendicular to the girders and arranged between the adjacent girders, the girders are I-shaped girders formed by splicing a plurality of girder sections end to end, grid units are formed by a plurality of girder sections aligned end to end and the secondary girders therebetween, and a platform plate is paved on each grid unit;
in the installed girder segments, one end of the girder segment facing the next girder segment to be installed is provided with a connecting clamping plate for connecting the girder segments and positioning the grid units; the connecting clamping plates are clamped at the end parts of the webs of the installed girder segments, the webs of the girder segments to be installed are inserted into the connecting clamping plates, and the connecting clamping plates are connected with the two girder segments through bolts respectively.
Further, the joint between the main beam sections is located at the midpoint of the end connection line of the two adjacent and parallel sub beams, and two sub beams are arranged between the two adjacent and parallel main beam sections.
Further, the steel beam grid and the platform plate are an integral prefabricated member, the modularized construction platform is formed by connecting all the integral prefabricated members into a whole through connecting clamping plates,
the splicing position of the girder segments on the platform plate is provided with hand holes for observing the splicing position and connecting the girder segments by extending hands, two hand holes are respectively formed in the platform plate at the two ends of each girder segment, the two hand holes at the same end are respectively positioned at the left side and the right side of the girder segment, each hand hole is provided with a hand hole cover plate, and the hand hole cover plates are buckled on the hand holes and are connected with the platform plate through bolts.
Further, when the modularized construction platform is out of the boom range of the hoisting equipment, the girder segments and the secondary girders are girder segments capable of being manually carried, the distance between two adjacent parallel secondary girders is not more than 60 cm, and all girder segments and the platform plates are assembled into the modularized construction platform in situ.
Further, the secondary beam is an I-shaped steel beam, a connecting plate with the plate surface perpendicular to the web plate of the main beam is welded on the side surface of the main beam section, and the connecting plate is overlapped with the web plate of the secondary beam and is connected with the secondary beam through bolts.
Further, the platform plates are steel plates, and adjacent platform plates are tightly spliced to form a platform capable of stacking the granular materials.
Further, the side position of the modularized construction platform is provided with guardrails, and the guardrails comprise upright posts anchored on the platform plate, and safety ropes, safety nets or horizontal stop rods arranged among the upright posts.
Compared with the prior art, the modularized construction platform for the foundation pit with the narrow surrounding field has the following beneficial effects:
according to the utility model, the steel beam grid units are arranged at the bottom of the platform plate, and the grid units are connected and aligned in batches by means of the connecting clamping plates, so that the paving of a construction platform with the steel beam grid at the bottom can be rapidly completed, and meanwhile, the platform can be rapidly disassembled and recycled.
Drawings
FIG. 1 is a schematic view of a modular construction platform for a foundation pit with a narrowed perimeter field of the present utility model in use;
FIG. 2 is a schematic view of an assembly process of a modular construction platform for a foundation pit with a narrowed perimeter field of the present utility model;
FIG. 3 is a schematic diagram of a grid cell structure;
in the figure, the main beam is 11-segmented, the secondary beam is 12-13-connected clamping plates, the platform plate is 2-flat, the hand hole cover plate is 3-and the guardrail is 4-.
Detailed Description
As shown in fig. 1, a modular construction platform for a foundation pit with a narrow surrounding area is used for expanding a construction area when the ground around the foundation pit is insufficient to meet construction requirements, and comprises a steel beam grid paved on a supporting beam of the foundation pit and a platform plate 2 paved on the steel beam grid and detachably and fixedly connected with the steel beam grid;
although the supporting beams have a large bearing capacity, the supporting beams do not initially act to bear the upper parts, so that the distance between the supporting beams is often relatively large, and if the platform plate 2 is directly paved on the supporting beams, the rigidity requirement of the platform plate 2 is too high, and the requirement can be met by using a thick steel plate. The steel girder mesh is additionally provided here so that the platform plate 2 does not need to have a very high rigidity. The pure steel structure consisting of the steel girder mesh and the upper platform plate 2 is used for facilitating connection and fixation, and if the construction platform is formed by splicing precast reinforced concrete plates, the connection of the reinforced concrete plates can be difficult, and the connection is heavier than that of the pure steel structure.
The girder steel grid comprises a plurality of girders parallel to each other and secondary girders 12 perpendicular to the girders and arranged between the adjacent girders, the girders are I-shaped girders formed by splicing a plurality of girder segments 11 end to end, the plurality of girder segments 11 aligned end to end and the secondary girders 12 therebetween form grid units, and a platform plate 2 is paved on each grid unit;
the grid cell configuration is here to facilitate batch alignment of the main beam sections 11.
As shown in fig. 2, in the installed girder segments 11, one end of the girder segment 11 facing the next girder segment 11 to be installed is provided with a connection clamping plate 13 for connecting the girder segments 11 and positioning the grid cells; the connecting clamping plates 13 are clamped at the web ends of the installed girder segments 11, the web of the girder segment 11 to be installed is inserted into the connecting clamping plates 13, and the connecting clamping plates 13 are respectively connected with the two girder segments 11 through bolts.
Here the connecting clamp plate 13 is clamped onto the installed girder segments 11 first and is fixed by bolts loose (the gaps between the clamp plates are large enough), when the next grid cell is installed, the girder segments 11 below it are inserted into the connecting clamp plate 13, and then the positioning is automatically completed in the process of tightening the bolts.
As shown in fig. 3, the seam between the main beam sections 11 is located at the midpoint of the end connection of two adjacent and parallel secondary beams 12, in order to ensure that each grid cell is identical and to facilitate processing. Two secondary beams 12 are arranged between two adjacent and parallel main beam sections 11, that is to say, the grid units are long-shaped, when the grid units are aligned, the long sides are aligned, and a plurality of connecting clamping plates 13 which simultaneously play a role in connection and positioning are arranged on the long sides, so that the accurate positions of the grid units are ensured. Meanwhile, the platform plate 2 on the installed grid units is also the foothold position of constructors during the whole platform operation period, and the long side can enable more constructors to participate in the work of connecting two adjacent grid units, so that the efficiency is improved,
when the modularized construction platform is positioned in the range of the suspension arm of the hoisting equipment, the steel beam grid and the platform plate 2 are integrated prefabricated members, and the modularized construction platform is connected into a whole through the connecting clamping plates 13 by the integrated prefabricated members. The foundation pit top is in the scope that the davit of tower crane sweeps in most time, even there is not the tower crane, often has car crane or simple and easy fixed hoisting equipment on the edge, can directly hoist this whole prefabrication piece in place to fine setting horizontal position through the horizontal cable, ensure girder segmentation 11 to align. Therefore, the connection of the platform plate 2 and the steel beam grid can be omitted, the splicing between the platform plates 2 is omitted, and the platform plates 2 can be automatically spliced when the main beam sections 11 are aligned. At the same time, the safety is improved, because when the two grid cells are connected, both platform boards 2 are in place, and the connection process is no longer a bordering operation.
However, the use of the table plate 2 together with the grid cells causes problems in connection because the table plate 2 blocks the hands of the constructor. Therefore, in this embodiment, the splicing position of the main beam section 11 on the platform plate 2 is provided with hand holes for observing the splicing position and connecting the main beam section 11 by extending hands, two hand holes are respectively provided on the platform plate 2 at two ends of each main beam section 11, two hand holes at the same end are respectively located at the left and right sides of the main beam section 11, each hand hole is provided with a hand hole cover plate 3, and the hand hole cover plates 3 are fastened on the hand holes and are connected with the platform plate 2 by bolts.
In very rare cases (typically with design errors), a partially positioned modular construction platform may be outside the boom of the lifting apparatus, where in situ assembly is required. At this time, the main beam section 11 and the secondary beams 12 are all manually-carried steel beam sections, and the distance between two adjacent parallel secondary beams 12 is not more than 60 cm, so that all connection positions can be reached by constructors on the laid platform boards 2.
The secondary beam 12 is an I-shaped steel beam, the side face of the main beam section 11 is welded with a connecting plate with the plate face perpendicular to the web plate of the main beam, and the connecting plate is overlapped with the web plate of the secondary beam 12 and is connected with the secondary beam 12 through bolts. This is a conventional connection and will not be described in detail here.
The platform boards 2 are steel plates, and adjacent platform boards 2 are tightly spliced to form a platform capable of stacking the granular materials. The purpose of the hand hole cover plate 3 is also to avoid particulate material falling down.
The side position of the modularized construction platform is provided with guardrails 4, and the guardrails 4 comprise upright posts anchored on the platform plate 2, and safety ropes, safety nets or horizontal stop rods arranged among the upright posts. The columns may be prefabricated together with the platform.
The utility model discloses a modularized construction platform for a foundation pit with a narrow peripheral site, which comprises the following steps of:
step one: hoisting an integral prefabricated member consisting of a platform plate 2 and grid units, and fixing the lower flange plates of two main girder segments 11 of the edge to the supporting beam by using anchor bolts;
step two: the next integral prefabricated member is hung, and the integral prefabricated member is pulled to enable the web plate of the girder segment 11 to be inserted into the connecting clamping plate 13;
step three: tightening bolts on the connecting clamping plates 13, completing connection of the main girder segments 11 and positioning of the integral prefabricated members at the same time, and then fixing lower flange plates of two main girder segments 11 at the edges of the newly installed integral prefabricated members to the supporting beams by using anchor bolts;
step four: and repeating the first to third steps, connecting the guardrails 4 after the installation of all the integral prefabricated members, and fastening the hand hole cover plate 3.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (6)
1. A modular construction platform for a foundation pit with a narrow surrounding area for expanding a construction area when the ground surrounding the foundation pit is insufficient to meet construction requirements, characterized in that: the foundation pit comprises a steel beam grid paved on a supporting beam of a foundation pit and a platform plate (2) paved on the steel beam grid and detachably and fixedly connected with the steel beam grid;
the steel girder grid comprises a plurality of parallel main girders and secondary girders (12) perpendicular to the main girders and arranged between the adjacent main girders, the main girders are I-shaped steel girders formed by splicing a plurality of main girder segments (11) end to end, grid units are formed by the plurality of main girder segments (11) aligned end to end and the secondary girders (12) in between, and a platform plate (2) is paved on each grid unit;
in the installed girder segments (11), one end of the girder segment (11) facing the next girder segment (11) to be installed is provided with a connecting clamping plate (13) for connecting the girder segments (11) and positioning the grid units; the connecting clamp plates (13) are clamped at the web ends of the installed girder segments (11), the web of the girder segment (11) to be installed is inserted into the connecting clamp plates (13), and the connecting clamp plates (13) are connected with the two girder segments (11) through bolts respectively.
2. A modular construction platform for a foundation pit with a narrowed perimeter field as claimed in claim 1 wherein: the joint between the main beam sections (11) is positioned at the midpoint of the connecting line of the end parts of the two adjacent and parallel secondary beams (12), and the two secondary beams (12) are arranged between the two adjacent and parallel main beam sections (11).
3. A modular construction platform for a foundation pit with a narrowed perimeter field as claimed in claim 2 wherein: the steel beam grid and the platform plate (2) are an integral prefabricated member, the modularized construction platform is formed by connecting all integral prefabricated members into a whole through connecting clamping plates (13),
the splicing position of the main beam sections (11) on the platform plate (2) is provided with hand holes for observing the splicing position and connecting the main beam sections (11) by extending hands, the platform plate (2) at the two ends of each main beam section (11) is respectively provided with two hand holes, the two hand holes at the same end are respectively positioned at the left side and the right side of the main beam sections (11), each hand hole is provided with a hand hole cover plate (3), and the hand hole cover plates (3) are buckled on the hand holes and are connected with the platform plate (2) through bolts.
4. A modular construction platform for a foundation pit with a narrowed perimeter field as claimed in claim 1 wherein: the secondary beam (12) is an I-shaped steel beam, a connecting plate with the plate surface perpendicular to the web plate of the main beam is welded on the side surface of the main beam section (11), and the connecting plate is overlapped with the web plate of the secondary beam (12) and is connected with the secondary beam (12) through bolts.
5. A modular construction platform for a foundation pit with a narrowed perimeter field as claimed in claim 1 wherein: the platform boards (2) are steel plates, and adjacent platform boards (2) are tightly spliced to form a platform capable of stacking the granular materials.
6. A modular construction platform for a foundation pit with a narrowed perimeter field as claimed in claim 1 wherein: the side position of the modularized construction platform is provided with guardrails (4), and each guardrail (4) comprises upright posts anchored on the platform plate (2) and safety ropes, safety nets or horizontal stop rods arranged between the upright posts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321329876.1U CN220377794U (en) | 2023-05-30 | 2023-05-30 | Modularized construction platform for foundation pit with narrow surrounding field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321329876.1U CN220377794U (en) | 2023-05-30 | 2023-05-30 | Modularized construction platform for foundation pit with narrow surrounding field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220377794U true CN220377794U (en) | 2024-01-23 |
Family
ID=89559444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321329876.1U Active CN220377794U (en) | 2023-05-30 | 2023-05-30 | Modularized construction platform for foundation pit with narrow surrounding field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220377794U (en) |
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2023
- 2023-05-30 CN CN202321329876.1U patent/CN220377794U/en active Active
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