CN210013221U

CN210013221U - Subway foundation pit supporting device

Info

Publication number: CN210013221U
Application number: CN201920213879.6U
Authority: CN
Inventors: 龚方源; 罗佳; 王泽�
Original assignee: Urban Rail Transit Engineering Co Ltd of China Railway Beijing Engineering Group Co Ltd
Current assignee: Urban Rail Transit Engineering Co Ltd of China Railway Beijing Engineering Group Co Ltd
Priority date: 2019-02-19
Filing date: 2019-02-19
Publication date: 2020-02-04
Anticipated expiration: 2029-02-19

Abstract

The utility model belongs to the technical field of foundation pit supporting devices, in particular to a foundation pit supporting device, which comprises a U-shaped steel welding part, a concrete support and a precast concrete supporting beam, wherein the precast concrete supporting beam is arranged in the concrete support, and the outer wall of the concrete support is provided with the U-shaped steel welding part; after the construction is accomplished, when needing to dismantle a supporting beam, earlier cut a supporting beam, if the complicated unable direct cutting of environment, can dismantle the back along destroying the groove and cut or destroy a supporting beam to the reinforcing steel, because the intensity that the existence that destroys the groove made the supporting beam descends, thereby can be more quick dismantlement, simultaneously owing to set up the destruction groove, after dismantling the completion, the staff can follow and destroy the groove and further carry out further quick decomposition to a supporting beam, avoided the bigger or heavier unable condition of transporting fast department job site of spandrel girder wreckage volume, the speed of demolising has been improved, thereby the progress of the construction of acceleration.

Description

Subway foundation pit supporting device

Technical Field

The utility model belongs to the technical field of foundation ditch strutting arrangement, concretely relates to subway foundation pit strutting arrangement.

Background

The foundation pit engineering mainly comprises foundation pit supporting system design and construction and earthwork excavation, is a system engineering with strong comprehensiveness, requires close cooperation of geotechnical engineering and structural engineering technicians, and is a temporary structure which is not needed after the construction of underground engineering is completed.

Chinese patent (patent number: CN201720005050.8, discloses a subway foundation pit concrete supporting beam convenient to dismantle), this patent includes precast concrete supporting beam, concrete support and U shaped steel welding spare, and precast concrete supporting beam lays in the recess of concrete support, and the subway foundation pit concrete supporting beam who designs, simple structure, the installation of being convenient for, convenient to dismantle, the engineering progress can be effectively accelerated to the engineering time of being short, but has certain problem.

The prior art has the following problems:

1. the original support device for the subway foundation pit is inconvenient to rapidly disassemble due to large strength and long cutting and dismantling period after use, and wastes a large amount of time after construction is finished, so that the construction cost is increased;

2. the strutting arrangement of original subway foundation ditch need be hung it out after the cutting, but the required heavy ear of hanging when not designing the later stage on most supporting beam and demolising has brought the inconvenience for demolising.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a subway foundation pit strutting arrangement has convenient to detach and is convenient for hoist characteristics.

In order to achieve the above object, the utility model provides a following technical scheme: a subway foundation pit supporting device comprises a U-shaped steel welding part, a concrete support and a precast concrete supporting beam, wherein the precast concrete supporting beam is arranged inside the concrete support, the U-shaped steel welding part is arranged on the outer wall of the concrete support, a welding groove is formed in the outer wall of the U-shaped steel welding part, a hoisting groove is formed in the upper surface of the U-shaped steel welding part, a hoisting plate is arranged in the hoisting groove and fixedly connected with the U-shaped steel welding part, a hoisting bar is arranged above the hoisting plate and fixedly connected with the hoisting plate through a hoisting bar, supporting grooves are formed in two sides of the concrete support, inner lining ribs are arranged in the supporting grooves and fixedly connected with the concrete support, a damage groove is formed in the outer surface of the U-shaped steel welding part, and reinforcing steel is arranged at the position, close to the damage groove, of the outer wall of the U-shaped steel welding part, the outer wall of the concrete support is provided with a supporting groove, the inner wall of the supporting groove is provided with a lining rib at a position close to the U-shaped steel welding part, and the lining rib is fixedly connected with the concrete support and the U-shaped steel welding part respectively.

Preferably, the number of the damage grooves is at least twelve, and the damage grooves are all formed in four edges of the U-shaped steel welding piece.

Preferably, the number of the reinforced steel is four, the reinforced steel is respectively arranged at four edges of the U-shaped steel welding part, and the U-shaped steel welding part is fixedly connected with the reinforced steel through expansion screws.

Preferably, the number of the hoisting plates is two, and the two hoisting plates are arranged on the upper surfaces of the two ends of the U-shaped steel welding piece.

Preferably, the two ends of the hoisting bar are welded and fixed with the hoisting bar, a limiting plate is arranged at the position, close to the hoisting bar, of the inner side of the hoisting bar, and the limiting plate is fixedly connected with the hoisting bar.

Preferably, the breaking groove is of a concave structure.

Preferably, the reinforcing steel is in a long strip shape, the cross section of the reinforcing steel is in an L shape, and the inner walls of two sides of the reinforcing steel are attached to the outer wall of the U-shaped steel welding piece.

Compared with the prior art, the beneficial effects of the utility model are that:

1. after the construction is accomplished, when needing to dismantle a supporting beam, earlier cut a supporting beam, if the complicated unable direct cutting of environment, can dismantle the back to the reinforcing steel, cut or destroy a supporting beam along destroying the groove, because the intensity that the existence in destruction groove made the supporting beam descends, thereby can be faster dismantlement, simultaneously owing to set up the destruction groove, after dismantling the completion, the staff can follow and destroy the groove and further carry out further quick decomposition to a supporting beam, avoided the bigger or heavier unable condition of transporting the job site of department fast of spandrel girder wreckage, the speed of demolising has been improved, thereby the progress of the construction of acceleration.

2. When unable when decomposing, the accessible is connected with the hoist and is hung heavy thick stick, hangs a supporting beam, because the existence of limiting plate, a supporting beam can not take place the condition of excessive slope when being hung to it is more convenient to hang a supporting beam, through setting up the limiting plate, can prevent a supporting beam to take place too big slope at the in-process of hanging a supporting beam, and the contact surface of hanging heavy board and U shaped steel welding piece is great simultaneously, and is more stable, thereby has solved the inconvenient problem of hanging of a supporting beam.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a U-shaped steel weldment of the present invention;

FIG. 3 is a schematic structural view of a middle lifting weight plate of the present invention;

fig. 4 is a schematic top view of the present invention;

in the figure: 1. a U-shaped steel welding part; 11. welding a groove; 12. hoisting a heavy groove; 13. destroying the groove; 2. a concrete support; 21. a support groove; 3. prefabricating a concrete support beam; 4. an inner lining rib; 5. reinforcing steel; 51. an expansion screw; 6. hoisting a weight plate; 61. a hoisting rod; 62. a hoisting bar; 63. and a limiting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-4, the present invention provides the following technical solutions: a subway foundation pit supporting device comprises a U-shaped steel welding part 1, a concrete support 2 and a precast concrete supporting beam 3, wherein the precast concrete supporting beam 3 is arranged inside the concrete support 2, the U-shaped steel welding part 1 is arranged on the outer wall of the concrete support 2, a welding groove 11 is formed in the outer wall of the U-shaped steel welding part 1, a hoisting groove 12 is formed in the upper surface of the U-shaped steel welding part 1, a hoisting plate 6 is arranged in the hoisting groove 12, the hoisting plate 6 is fixedly connected with the U-shaped steel welding part 1, a hoisting bar 62 is arranged above the hoisting plate 6, the hoisting bar 62 is fixedly connected with the hoisting plate 6 through a hoisting bar 61, supporting grooves 21 are formed in two sides of the concrete support 2, inner lining ribs 4 are arranged in the supporting grooves 21, the inner lining ribs 4 are fixedly connected with the concrete support 2, a damage groove 13 is formed in the outer surface of the U-shaped steel welding part 1, reinforcing steel 5 is arranged at the position, close to the damage groove 13, support groove 21 has been seted up to the outer wall of concrete support 2, and the position department that the inner wall of support groove 21 is close to U shaped steel welding 1 is equipped with inside lining muscle 4, inside lining muscle 4 respectively with concrete support 2 and U shaped steel welding 1 fixed connection.

In this example: the lining ribs 4 and the reinforcing steel 5 are made of cast steel, and the material has high tensile strength and is widely applied to building construction.

In this example: the materials of the hoisting plate 6, the hoisting rod 61, the hoisting rod 62 and the limiting plate 63 are all carbon steel, the strength of the material is high, and after the material is used, the material can be detached and reused

In this embodiment: when in installation, the reinforced steel 5 can be arranged at four edges and corners outside the U-shaped steel welding part 1 to reinforce the U-shaped steel welding part 1 so as to prevent the strength of the surface of the U-shaped steel welding part 1 from being reduced due to the damage groove 13, the supporting groove 21 in the U-shaped steel welding part 1 can also reinforce the strength of the U-shaped steel welding part 1, after the construction is completed, when the supporting beam needs to be disassembled, the supporting beam is firstly cut, if the environment is complicated and the direct cutting cannot be performed, the supporting beam can be cut or damaged along the damage groove 13 after the reinforced steel 5 is disassembled, the strength of the supporting beam is reduced due to the existence of the damage groove 13, so that the supporting beam can be disassembled more quickly, meanwhile, due to the arrangement of the damage groove 13, after the disassembly is completed, a worker can further quickly disassemble the supporting beam along the damage groove 13, and the situation that the broken body of the bearing beam is large in volume, when unable when decomposing, the accessible is connected with the hoist and is hung heavy lever 62, hangs a supporting beam, because the existence of limiting plate 63, the supporting beam can not take place the condition of excessive slope when being hung to more conveniently hang a supporting beam, through setting up limiting plate 63, can prevent a supporting beam to take place too big slope at the in-process of hanging a supporting beam, it is great with U shaped steel welding 1's contact surface to hang heavy board 6 simultaneously, and is more stable.

Specifically, the number of the destruction grooves 13 is at least twelve, and the destruction grooves 13 are all arranged at four corners of the U-shaped steel weldment 1; if the complicated unable direct cutting of environment, can dismantle back edge to the reinforcing steel 5 and destroy groove 13 and cut or destroy a supporting beam, because the intensity that exists of destroying groove 13 messenger's supporting beam descends to dismantlement that can be more quick, owing to set up destruction groove 13 simultaneously, after dismantling the completion, the staff can follow and destroy groove 13 and carry out further quick decomposition to a supporting beam.

Specifically, the number of the reinforcing steels 5 is four, the reinforcing steels are respectively arranged at four edges of the U-shaped steel welding piece 1, and the U-shaped steel welding piece 1 and the reinforcing steels 5 are fixedly connected through expansion screws 51; due to the breaking grooves 13, the overall strength of the support beam is reduced, and the reinforcing steel 5 can protect four corners of the support beam.

Specifically, the number of the hoisting plates 6 is two, and the two hoisting plates 6 are both arranged on the upper surfaces of the two ends of the U-shaped steel welding part 1; the lifting plate 6 can be lifted by the lifting bar 62 during the lifting process.

Specifically, two ends of the lifting bar 62 are welded and fixed with the lifting bar 61, a position limiting plate 63 is arranged at a position, close to the lifting bar 62, on the inner side of the lifting bar 61, and the position limiting plate 63 is fixedly connected with the lifting bar 61 and the lifting bar 62; through setting up limiting plate 63, can prevent that a supporting beam from taking place too big slope at the in-process of hoisting a supporting beam, the contact surface of hoisting plate 6 and U shaped steel welding 1 is great simultaneously, and is more stable.

Specifically, the breaking groove 13 is of a concave structure; the breaking grooves 13 reduce the strength of the four corners of the support beam, and the crusher can break the support beam along the breaking grooves 13.

Specifically, the reinforcing steel 5 is in a strip shape, the cross section of the reinforcing steel 5 is in an L shape, and the inner walls of two sides of the reinforcing steel 5 are attached to the outer wall of the U-shaped steel welding part 1; through setting up reinforced steel 5, because reinforced steel 5's centre is ninety degrees bends, can strengthen the intensity of U shaped steel welding spare 1, when dismantling, can dismantle reinforced steel 5.

The utility model discloses a theory of operation and use flow: when in installation, the reinforced steel 5 can be arranged at four edges and corners outside the U-shaped steel welding part 1 to reinforce the U-shaped steel welding part 1 so as to prevent the strength of the surface of the U-shaped steel welding part 1 from being reduced due to the damage groove 13, the supporting groove 21 in the U-shaped steel welding part 1 can also reinforce the strength of the U-shaped steel welding part 1, after the construction is completed, when the supporting beam needs to be disassembled, the supporting beam is firstly cut, if the environment is complicated and the direct cutting cannot be performed, the supporting beam can be cut or damaged along the damage groove 13 after the reinforced steel 5 is disassembled, the strength of the supporting beam is reduced due to the existence of the damage groove 13, so that the supporting beam can be disassembled more quickly, meanwhile, due to the arrangement of the damage groove 13, after the disassembly is completed, a worker can further quickly disassemble the supporting beam along the damage groove 13, and the situation that the broken body of the bearing beam is large in volume, when the support beam can not be disassembled, the support beam can be lifted by connecting the lifting lever 62 by the crane, and the support beam can not be excessively inclined when lifted due to the limiting plate 63, so that the support beam can be lifted more conveniently.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a subway foundation pit strutting arrangement, includes U shaped steel welding piece (1), concrete support (2) and precast concrete supporting beam (3), the internally mounted of concrete support (2) has precast concrete supporting beam (3), install on the outer wall of concrete support (2) U shaped steel welding piece (1), welding groove (11), its characterized in that have been seted up on the outer wall of U shaped steel welding piece (1): the upper surface of the U-shaped steel welding piece (1) is provided with a hoisting groove (12), a hoisting plate (6) is arranged in the hoisting groove (12), the hoisting plate (6) is fixedly connected with the U-shaped steel welding piece (1), a hoisting bar (62) is arranged above the hoisting plate (6), the hoisting bar (62) is fixedly connected with the hoisting plate (6) through a hoisting rod (61), supporting grooves (21) are formed in two sides of the concrete support (2), inner lining ribs (4) are arranged in the supporting grooves (21), the inner lining ribs (4) are fixedly connected with the concrete support (2), a damage groove (13) is formed in the outer surface of the U-shaped steel welding piece (1), a reinforcing steel support (5) is arranged at a position, close to the damage groove (13), of the outer wall of the U-shaped steel welding piece (1), and the supporting grooves (21) are formed in the outer wall of the concrete support (2), and the inner wall of the support groove (21) is provided with an inner lining rib (4) at a position close to the U-shaped steel welding piece (1), and the inner lining rib (4) is fixedly connected with the concrete support (2) and the U-shaped steel welding piece (1) respectively.

2. A subway foundation pit supporting arrangement as claimed in claim 1, wherein: the number of the damage grooves (13) is at least twelve, and the damage grooves (13) are all arranged at four edges of the U-shaped steel welding piece (1).

3. A subway foundation pit supporting arrangement as claimed in claim 1, wherein: the quantity of strengthening steel (5) is four, sets up respectively four edges and corners department of U shaped steel welding piece (1), just U shaped steel welding piece (1) with strengthen steel (5) and pass through inflation screw (51) fixed connection.

4. A subway foundation pit supporting arrangement as claimed in claim 1, wherein: the number of the hoisting plates (6) is two, and the two hoisting plates (6) are arranged on the upper surfaces of the two ends of the U-shaped steel welding piece (1).

5. A subway foundation pit supporting arrangement as claimed in claim 1, wherein: hang the both ends of heavy thick stick (62) with hang heavy pole (61) welded fastening, hang the inboard of heavy pole (61) and be close to hang the position department of heavy thick stick (62) and be equipped with limiting plate (63), limiting plate (63) with hang heavy pole (61) with hang heavy thick stick (62) fixed connection.

6. A subway foundation pit supporting arrangement as claimed in claim 1, wherein: the breaking groove (13) is of an inwards concave structure.

7. A subway foundation pit supporting arrangement as claimed in claim 1, wherein: the reinforced steel (5) is in a long strip shape, the cross section of the reinforced steel (5) is in an L shape, and the inner walls of two sides of the reinforced steel (5) are attached to the outer wall of the U-shaped steel welding piece (1).