CN212427122U - Foundation pit steel supporting structure - Google Patents
Foundation pit steel supporting structure Download PDFInfo
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- CN212427122U CN212427122U CN202021686356.2U CN202021686356U CN212427122U CN 212427122 U CN212427122 U CN 212427122U CN 202021686356 U CN202021686356 U CN 202021686356U CN 212427122 U CN212427122 U CN 212427122U
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Abstract
The utility model provides a foundation ditch steel bearing structure, include: the supporting device comprises a plurality of supporting groups, a supporting frame and a supporting frame, wherein each supporting group comprises at least two supporting rods which are arranged in parallel, and one end of each supporting group is abutted to a surrounding purlin; the adjacent two support groups are connected through the first connecting piece or the second connecting piece, and the second connecting piece is abutted against the surrounding purlin; a plurality of subassemblies that cup joint, every the subassembly that cup joints all includes a plurality of cutting ferrule and many connecting rods, the cutting ferrule cover is established outside the bracing piece, the cutting ferrule on two adjacent bracing pieces is connected to the connecting rod. The supporting group is spliced through the first connecting piece and the second connecting piece, the supporting length of the supporting group is increased, and the problem that the steel support cannot be applied to a large-span foundation pit in the prior art is solved. The clamping sleeve assemblies are connected with the adjacent supporting rods, so that the relevance between the supporting rods is improved, and the overall rigidity of the foundation pit steel supporting structure is further improved.
Description
Technical Field
The utility model relates to a foundation ditch construction technical field especially relates to a foundation ditch steel bearing structure.
Background
The existing supporting system of foundation pit engineering comprises two forms of concrete support and steel support. The concrete support has a wide application range, but the concrete support has high manufacturing cost and low construction efficiency, and the problems of noise, dust pollution, waste concrete resources and the like can be caused when the concrete support is dismantled. The steel support has the advantages of environmental protection, high construction efficiency, reusability and the like, and is widely used in foundation pit engineering.
However, as the scale of foundation pit engineering is larger and larger, the support length is increased, so that the problems that the steel support has weak instability-resistant rigidity, obvious expansion and contraction deformation caused by temperature change, large joint gaps of steel members, large plastic deformation of the members and the like exist, and the steel support structure cannot adapt to a large-span foundation pit. At present, during design, a foundation pit can be often separated only, and a partition wall is additionally arranged, so that the construction progress can be influenced, a large amount of construction waste can be generated, and the like. In order to satisfy the green sustainable development, it is necessary to provide a steel support structure suitable for a large-span foundation pit.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a foundation ditch steel bearing structure can effectively solve the problem that the steel shotcrete among the prior art can not be applied to the large-span foundation ditch.
In order to achieve the above object, the utility model provides a foundation ditch steel bearing structure, include:
the supporting device comprises a plurality of supporting groups, a supporting frame and a supporting frame, wherein each supporting group comprises at least two supporting rods which are arranged in parallel, and one end of each supporting group is abutted to a surrounding purlin;
the adjacent two support groups are connected through the first connecting piece or the second connecting piece, and the second connecting piece is abutted against the surrounding purlin;
a plurality of subassemblies that cup joint, every the subassembly that cup joints all includes a plurality of cutting ferrule and many connecting rods, the cutting ferrule cover is established outside the bracing piece, the cutting ferrule on two adjacent bracing pieces is connected to the connecting rod.
Optionally, the cutting sleeve includes a first half ring and a second half ring, one end of the first half ring is connected to one end of the second half ring by a bolt, and the other end of the first half ring is rotatably connected to the other end of the second half ring so that one end of the first half ring can rotate relative to one end of the second half ring.
Optionally, the connecting mode of the ferrule and the connecting rod is bolt connection or welding.
Optionally, the first connecting element includes a plurality of first four-way joints connected to each other, and at least one port of the first four-way joint is connected to the support rod.
Optionally, the second connecting piece includes a plurality of second four-way joints and a plurality of diagonal rods that are connected to each other, at least one port of each second four-way joint is connected to the support rod, the diagonal rod and the support rod form an included angle, one end of the diagonal rod is connected to the four-way joint at the end of the second connecting piece, and the other end of the diagonal rod is abutted to the surrounding purlin.
Optionally, the first four-way joint and the second four-way joint both include a plurality of cross bars and a plurality of longitudinal bars, and the cross bars are perpendicular to the longitudinal bars and are mutually communicated.
Optionally, two adjacent first four-way joints or second four-way joints are connected through flanges, and the first four-way joints or the second four-way joints are connected with the connecting rod through flanges.
Optionally, the foundation pit steel supporting structure further comprises a plurality of sliding lock connecting pieces, one end, away from the purlin, of the second connecting piece is connected with the supporting group through the sliding lock connecting pieces, and the sliding lock connecting pieces can extend or shorten along the axial direction of the supporting rods.
Optionally, the sliding lock connector includes a box body, a sliding drawer and a hydraulic jack, the sliding drawer is at least partially located in the box body, the hydraulic jack is located in the sliding drawer, and the hydraulic jack can extend to enable the sliding drawer to slide relative to the box body.
Optionally, the sliding lock connecting piece still includes two limiting plates, the slip drawer with the box all includes end plate and two parallel curb plates, the curb plate of slip drawer is located the inboard of the curb plate of box, the end plate of slip drawer with the bracing piece is connected, the end plate of box with the second connecting piece is connected, the one end butt of limiting plate the curb plate of slip drawer, other end butt the end plate of box.
The utility model provides a foundation ditch steel bearing structure, include: the supporting device comprises a plurality of supporting groups, a supporting frame and a supporting frame, wherein each supporting group comprises at least two supporting rods which are arranged in parallel, and one end of each supporting group is abutted to a surrounding purlin; the adjacent two support groups are connected through the first connecting piece or the second connecting piece, and the second connecting piece is abutted against the surrounding purlin; a plurality of subassemblies that cup joint, every the subassembly that cup joints all includes a plurality of cutting ferrule and many connecting rods, the cutting ferrule cover is established outside the bracing piece, the cutting ferrule on two adjacent bracing pieces is connected to the connecting rod. The supporting group is spliced through the first connecting piece and the second connecting piece, the supporting length of the supporting group is increased, and the problem that a steel support in the prior art cannot be applied to a large-span foundation pit is effectively solved. In addition, the clamping sleeve assemblies are connected with the adjacent supporting rods, so that the relevance between the supporting rods is improved, and the overall rigidity of the foundation pit steel supporting structure is further improved.
Drawings
Fig. 1 is a schematic structural diagram of a foundation pit steel supporting structure provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a card sleeve provided in an embodiment of the present invention;
fig. 3a-3c are schematic layout views of a ferrule assembly according to an embodiment of the present invention;
fig. 4 is another schematic structural diagram of a second connecting member according to an embodiment of the present invention;
fig. 5 is a schematic structural view of a slide lock connector according to an embodiment of the present invention;
wherein the reference numerals are:
10-a support bar; 20-surrounding purlin; 30-a first connector; 40-a second connector; 50-a socket assembly; 51-a ferrule; 52-a connecting rod; 60-diagonal rods; 70-flange plate; 80-slide lock connection;
510-a first half-ring; 520-a second half-ring; 810-a box body; 820-sliding drawers; 830-limit plate.
Detailed Description
The following description of the embodiments of the present invention will be described in more detail with reference to the drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
As shown in fig. 1, the present embodiment provides a foundation pit steel supporting structure, including:
each support group comprises at least two support rods 10 which are arranged in parallel, and one end of each support group is abutted with a surrounding purlin 20;
the adjacent two support groups are connected through the first connecting pieces 30 or the second connecting pieces 40, and the second connecting pieces 40 are abutted against the purlin 20;
the sleeve components 50 are arranged, each sleeve component 50 comprises a plurality of clamping sleeves 51 and a plurality of connecting rods 52, the clamping sleeves 51 are sleeved outside the supporting rods 10, and the connecting rods 52 are connected with the clamping sleeves 51 on the two adjacent supporting rods 10.
Specifically, foundation ditch steel bearing structure mainly is applicable to the support of large-span foundation ditch, the large-span usually indicates that the span of foundation ditch is greater than 30 meters for required support steel pipe is very long, so the utility model provides a foundation ditch steel bearing structure includes a plurality of support groups, and a plurality of support groups form ultimate steel bearing structure through the concatenation.
Each of the support groups includes a plurality of support rods 10 arranged in parallel. Referring to fig. 1, in the present embodiment, the vertically extending support set includes 3 support rods 10 arranged in parallel, and the horizontally extending support set includes 2 support rods 10 arranged in parallel. It should be understood that the number of the support rods 10 is not limited in the present application, and a plurality of the support rods 10 may be located on the same plane or different planes, which is not limited in the present application. In this embodiment, the support rods 10 are all made of steel pipes, and the diameters and lengths of the support rods can be designed according to requirements.
It should be understood that fig. 1 only schematically shows a partial splicing condition of the support groups, and the support groups may be spliced along a certain direction or along a certain plane, which is not limited in this application. When the support groups are spliced along a certain direction, the two support groups at the two ends of the foundation pit support structure are abutted to the surrounding purlin 20, and when the support groups are spliced along a certain plane, the support groups at the edge of the foundation pit support structure are abutted to the surrounding purlin 20, so that one ends of at least two support groups are abutted to the surrounding purlin 20.
With reference to fig. 1, the foundation pit steel supporting structure further includes a plurality of sleeve components 50, and the sleeve components 50 are used for connecting adjacent supporting rods 10 to form a supporting group, so as to improve the overall rigidity of the foundation pit steel supporting structure. In this embodiment, each of the sleeve joint assemblies 50 includes 3 cutting sleeves 51 and 2 connecting rods 52, 3 the cutting sleeves 51 are respectively sleeved on 3 of the supporting rods 10, 2 the connecting rods 52 are connected to the cutting sleeves 51 on two adjacent supporting rods 10. Because in the existing steel supporting structure, a threaded hole is usually required to be formed in the supporting rod 10 for bolt connection, the rigidity of the supporting rod 10 at the threaded hole is reduced, and the overall rigidity of the steel supporting structure is affected. The cutting ferrule 51 is sleeved outside the support rod 10 in the embodiment, so that the support rod 10 cannot be affected or damaged, and the cutting ferrule 51 can be detached, so that the subsequent foundation pit steel support structure can be conveniently detached and reused.
Referring to fig. 2, the ferrule 51 includes a first half ring 510 and a second half ring 520, one end of the first half ring 510 is connected to one end of the second half ring 520 by a bolt, and the other end of the first half ring 510 is rotatably connected to the other end of the second half ring 520 so that one end of the first half ring 510 can rotate relative to one end of the second half ring 520. For example, when it is required to connect adjacent ones of the support poles 10, one end of the first half ring 510 may be rotated counterclockwise relative to one end of the second half ring 520 to be fastened to the support pole 10, and then fastened by a fastening member such as a bolt. When the cutting sleeve 51 needs to be removed, the fastener on the cutting sleeve 51 is firstly removed, and then one end of the first half ring 510 is rotated clockwise relative to one end of the second half ring 520. It should be understood that the ferrule 51 is not limited to the form provided in the present embodiment, and may be, for example, a structure in which both ends are locked by a fastener such as a bolt.
In addition, the number and arrangement of the ferrules 51 and the connecting rods 52 are not limited in the present application. For example, as shown in fig. 3a, the number of the ferrules 51 is 7, the number of the connecting rods 52 is 3, and the connecting rods 52 are distributed in a zigzag shape. Or, as shown in fig. 3b, the number of the ferrules 51 is 9, the number of the connecting rods 52 is 3, and 3 connecting rods 52 are parallel to each other. Or, as shown in fig. 3c, the number of the cutting sleeves 51 is 5, and the number of the connecting rods 52 is 4.
With reference to fig. 1, the foundation pit steel support structure further includes a plurality of first connecting members 30, and the first connecting members 30 are used for connecting two adjacent support groups located in the middle portion of the foundation pit steel support structure. The first connecting member 30 includes a plurality of first four-way joints connected to each other, and at least one port of the first four-way joint is connected to the support rod 10. In this embodiment, the first connecting member 30 includes 6 first four-way joints, each three first four-way joints form a group, and two groups of the first four-way joints are symmetrical to each other. Of course, the number and distribution of the first four-way joints are not limited in the present application, and can be adjusted according to the arrangement form of the support groups. For example, when the support groups of both ends of the first connection member 30 include 3 support rods 10, the first connection member 30 includes 9 first four-way joints, distributed like the shape of a squared figure.
With reference to fig. 1, the foundation pit steel support structure further includes a plurality of second connectors 40, and the second connectors 40 are used for connecting the support groups at the end portions of the foundation pit steel support structure. Specifically, the second connecting member 40 includes a plurality of second four-way joints and a plurality of diagonal rods 60 connected to each other, at least one port of each second four-way joint is connected to the support rod 10, the diagonal rods 60 and the support rod 10 form an included angle, one end of each diagonal rod 60 is connected to the four-way joint at the end of the second connecting member 40, and the other end of each diagonal rod is abutted to the surrounding purlin 20. The supporting surface is increased by the mode that the inclined rods 60 are connected with the surrounding purlin 20, and the supporting stability of the steel supporting structure is improved.
In this embodiment, the second connecting member 40 located below includes 3 second four-way joints and 2 down tube struts 60, and the second connecting member 40 located on the right side includes 2 second four-way joints and 2 down tube struts 60, the down tube strut 60 with the contained angle that the bracing piece 10 formed is 45 degrees. Of course, the angle formed by the slanting pole 60 and the supporting pole 10 is not limited in the present application.
In addition, the number of the inclined rods 60 is not limited, and the design can be carried out according to the construction requirement and the supporting strength. As shown in fig. 4, the second connecting member 40 includes 8 second four-way joints and 4 diagonal rods 60, and the 4 diagonal rods 60 are arranged in a pairwise symmetrical manner, so that the stability is better.
It should be understood that the support groups at the ends of the foundation pit steel support structure may be connected to a purlin 20, or may be connected to other structures such as a retaining wall, and the application is not limited thereto.
In this embodiment, the first four-way joint and the second four-way joint each include a plurality of cross bars and a plurality of longitudinal bars, and the cross bars are perpendicular to the longitudinal bars and are mutually communicated. The first four-way joint and the second four-way joint can be prefabricated and formed in a factory, and then are spliced to form a first connecting piece 30 and a second connecting piece 40 for connection according to the arrangement form of the support rod 10 after being transported to the field. In this embodiment, the first four-way joint and the second four-way joint are made of steel.
Optionally, two adjacent first four-way joints or second four-way joints are connected through bolts, and the first four-way joints or the second four-way joints are connected with the connecting rod 52 through bolts. In this embodiment, when two first four-way joints or two second four-way joints are spliced, the flange plates 70 may be welded to the ports of the first four-way joints or the second four-way joints, and then the corresponding flange plates 70 may be locked by fasteners such as bolts, so as to achieve bolt connection. Meanwhile, the foundation pit steel supporting structure is convenient to dismantle subsequently through a bolt connection mode.
With reference to fig. 1, the foundation pit steel supporting structure further includes a plurality of slide lock connectors 80, one end of the second connector 40 away from the purlin 20 is connected to the supporting rod 10 through the slide lock connectors 80, and the slide lock connectors 80 can extend or contract along the axial direction of the supporting rod 10. Since the length of the support rod 10 after splicing may be too long or too short, the second connecting member 40 is tightly pressed against the purlin 20 or the enclosure wall by adjusting the length of the slide lock connecting member 80.
Specifically, referring to fig. 5, the slide lock connector 80 includes a housing 810, a slide drawer 820, and a hydraulic jack, wherein the slide drawer 820 is at least partially located in the housing 810, the hydraulic jack is located in the slide drawer 820, and the hydraulic jack can be extended to slide the slide drawer 820 relative to the housing 810. Through with slide lock connecting piece 80 designs for "drawer type" structure, both can be convenient for place hydraulic jack, can also increase the second connecting piece 40 with the relevance between bracing piece 10 for foundation ditch steel bearing structure's wholeness is stronger.
In this embodiment, referring to fig. 5, the slide lock connector 80 further includes two limiting plates 830, the slide drawer 820 and the box 810 include end plates and two parallel side plates, the side plates of the slide drawer 820 are located inside the side plates of the box 810, the end plates of the slide drawer 820 are connected to the supporting rod 10, the end plates of the box 810 are connected to the second connector 40, one end of the limiting plate 830 abuts against the side plates of the slide drawer 820, and the other end abuts against the end plates of the box 810. The limiting plate 830 is used to realize the self-locking function of the slide lock connector 80. After the slide lock connecting piece 80 is installed, the hydraulic jack applies pre-jacking force to the second connecting piece 40 to ensure the stress of the foundation pit steel supporting structure, and the limiting plate 830 is inserted to limit the sliding drawer 820. For the condition that some foundation pits do not need to be deformed in real time, the self-locking function of the sliding lock connecting piece 80 provides pressure maintaining, so that the hydraulic jack can be taken out and used for supporting other foundation pits, and the use of the hydraulic jack is reduced.
Of course, the slide lock connecting piece 80 provided by this embodiment can also be applied to the situation that the foundation pit needs real-time control to be out of shape, and the accessible is right a shaft force servo control system the operation of hydraulic jack is controlled, need not take out hydraulic jack this moment, when needs adjust during foundation pit steel bearing structure's the support jacking force, shaft force servo control system adjusts can.
In this embodiment, a slide rail may be further disposed on a side plate of the box 810, and the side plate of the sliding drawer 820 may slide along the slide rail.
In this embodiment, the foundation pit steel support structure can be laid on the steel upright and the steel joist.
Based on the above, the application also provides an installation method of the foundation pit steel support structure, the steel support structure is sequentially assembled from the middle of the foundation pit as a starting point to two sides in the construction process, and the concrete steps are as follows:
step S1: pre-assembling the first connecting piece and the second connecting piece on the ground;
step S2: after the foundation pit is excavated to a preset elevation, integrally hoisting the first connecting piece to the middle part of the foundation pit for installation;
step S3: and the first connecting piece in the middle is taken as a starting point, the support group, the next first connecting piece and the next support group … are assembled to two sides in sequence until the support group, the next first connecting piece and the next support group are assembled to the position of the enclosure wall or the enclosure purlin, the second fixed connecting piece and the sliding lock connecting piece are connected, and pre-jacking force is exerted through the sliding lock connecting piece.
Step S4: after each group of supporting groups are assembled, the clamping sleeve assemblies are arranged to connect adjacent supporting rods.
To sum up, the embodiment of the utility model provides a foundation ditch steel bearing structure, include: the supporting device comprises a plurality of supporting groups, a supporting frame and a supporting frame, wherein each supporting group comprises at least two supporting rods which are arranged in parallel, and one end of each supporting group is abutted to a surrounding purlin; the adjacent two support groups are connected through the first connecting piece or the second connecting piece, and the second connecting piece is abutted against the surrounding purlin; a plurality of subassemblies that cup joint, every the subassembly that cup joints all includes a plurality of cutting ferrule and many connecting rods, the cutting ferrule cover is established outside the bracing piece, the cutting ferrule on two adjacent bracing pieces is connected to the connecting rod. The supporting group is spliced through the first connecting piece and the second connecting piece, the supporting length of the supporting group is increased, and the problem that a steel support in the prior art cannot be applied to a large-span foundation pit is effectively solved. In addition, the clamping sleeve assemblies are connected with the adjacent supporting rods, so that the relevance between the supporting rods is improved, and the overall rigidity of the foundation pit steel supporting structure is further improved.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (10)
1. A foundation pit steel support structure, characterized by includes:
the supporting device comprises a plurality of supporting groups, a supporting frame and a supporting frame, wherein each supporting group comprises at least two supporting rods which are arranged in parallel, and one end of each supporting group is abutted to a surrounding purlin;
the adjacent two support groups are connected through the first connecting piece or the second connecting piece, and the second connecting piece is abutted against the surrounding purlin;
a plurality of subassemblies that cup joint, every the subassembly that cup joints all includes a plurality of cutting ferrule and many connecting rods, the cutting ferrule cover is established outside the bracing piece, the cutting ferrule on two adjacent bracing pieces is connected to the connecting rod.
2. The foundation pit steel support structure of claim 1, wherein the clamp sleeve comprises a first half ring and a second half ring, one end of the first half ring is bolted to one end of the second half ring, and the other end of the first half ring is rotatably connected to the other end of the second half ring such that one end of the first half ring can rotate relative to one end of the second half ring.
3. The foundation pit steel support structure of claim 1, wherein the ferrule is connected with the connecting rod by bolting or welding.
4. The foundation pit steel support structure of claim 1, wherein the first connector comprises a plurality of interconnected first four-way joints, at least one port of the first four-way joints being connected to the support bar.
5. The foundation pit steel supporting structure according to claim 4, wherein the second connecting member comprises a plurality of second four-way joints and a plurality of diagonal rods, the second four-way joints are connected with the supporting rods, at least one port of each second four-way joint is connected with the supporting rod, the diagonal rods form an included angle with the supporting rods, one end of each diagonal rod is connected with the four-way joint at the end of the second connecting member, and the other end of each diagonal rod is abutted to the surrounding purlin.
6. The foundation pit steel support structure of claim 5, wherein the first four-way joint and the second four-way joint each comprise a plurality of cross bars and a plurality of longitudinal bars, and the cross bars and the longitudinal bars are perpendicular to each other and are mutually through.
7. The foundation pit steel support structure of claim 5, wherein two adjacent first four-way joints or second four-way joints are flanged, and the first four-way joints or the second four-way joints are flanged with the connecting rods.
8. The foundation pit steel supporting structure of claim 1, wherein the foundation pit steel supporting structure further comprises a plurality of slide lock connecting pieces, one end of the second connecting piece, which is far away from the purlin, is connected with the supporting group through the slide lock connecting pieces, and the slide lock connecting pieces can extend or shorten along the axial direction of the supporting rods.
9. The foundation pit steel support structure of claim 8, wherein the slide lock connection comprises a box, a sliding drawer at least partially within the box, and a hydraulic jack within the sliding drawer that is extendable to slide the sliding drawer relative to the box.
10. The foundation pit steel support structure of claim 9, wherein the slide lock connector further comprises two limiting plates, the sliding drawer and the box body both comprise an end plate and two parallel side plates, the side plate of the sliding drawer is located on the inner side of the side plate of the box body, the end plate of the sliding drawer is connected with the supporting rod, the end plate of the box body is connected with the second connector, one end of the limiting plate abuts against the side plate of the sliding drawer, and the other end abuts against the end plate of the box body.
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| CN202021686356.2U CN212427122U (en) | 2020-08-13 | 2020-08-13 | Foundation pit steel supporting structure |
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| CN202021686356.2U CN212427122U (en) | 2020-08-13 | 2020-08-13 | Foundation pit steel supporting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114075829A (en) * | 2020-08-13 | 2022-02-22 | 同济大学建筑设计研究院(集团)有限公司 | Foundation pit steel supporting structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114075829A (en) * | 2020-08-13 | 2022-02-22 | 同济大学建筑设计研究院(集团)有限公司 | Foundation pit steel supporting structure |
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