CN213476892U

CN213476892U - Steel support device for foundation pit construction

Info

Publication number: CN213476892U
Application number: CN202021671981.XU
Authority: CN
Inventors: 冯丹; 刘继强; 刘辉喜; 李保军; 洪源; 肖春文; 赵晓路; 刘宝忠; 谢军; 张志军
Original assignee: Third Engineering Co Ltd of China Railway Seventh Group Co Ltd
Current assignee: Third Engineering Co Ltd of China Railway Seventh Group Co Ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-06-18
Anticipated expiration: 2030-08-12

Abstract

The utility model relates to a foundation pit construction related technical field, in particular to a steel support device for foundation pit construction, which comprises main uprights and auxiliary uprights arranged beside the main uprights, wherein the bottom end between two adjacent main uprights is connected with a layer of connecting beam, the top end of the connecting beam is connected with a three-layer connecting beam, the position which is level with the height of the auxiliary uprights is connected with two layers of connecting beams, the bottom end and the top end between two adjacent auxiliary uprights are both connected with a beam body structure which is the same as the one layer of connecting beam, the main uprights and the auxiliary uprights are connected through a beam, the steel support structure is used in pairs, and the whole transverse section is in an isosceles trapezoid structure when the steel support structure is used; through the fixed stiffening beam that sets up between longitudinal tie-beam and three-layer tie-beam to be the N style of calligraphy with the stiffening beam and set up, and let and constitute a plurality of triangle-shaped frame structures between the transverse connection roof beam, thereby improve the stability between longitudinal tie-beam and the three-layer tie-beam, thereby improve steel support device's overall stability.

Description

Steel support device for foundation pit construction

Technical Field

The utility model relates to a relevant technical field of foundation ditch construction specifically is a steel support device for foundation ditch construction.

Background

The foundation pit is a soil pit excavated at a foundation design position according to the base elevation and the base plane size, and the foundation pit is also used in the construction of a submarine tunnel, namely, a prefabricated immersed tube section is sunk into a pretreated foundation pit groove arranged on the seabed in a segmented manner, then the tube section is fixed, connected and backfilled, then water in the tube section is pumped out to form a communicated tunnel form, and the stability of the foundation pit has a main influence on the stability of the deep sea tunnel, so the foundation pit construction is a crucial step of the deep sea tunnel, but a steel support structure used in the foundation pit construction of the submarine tunnel at the present stage has certain problems; therefore, the utility model provides a steel bracket device for foundation ditch construction is used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steel support device for foundation ditch construction to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a steel support device for foundation pit construction comprises a main upright post and an auxiliary upright post arranged beside the main upright post, the main upright posts and the auxiliary upright posts are both vertically arranged on the ground, the bottom end between two adjacent main upright posts is connected with a layer of connecting beam, and the top end of the connecting beam is connected with three layers of connecting beams, and the position which is flush with the height of the auxiliary upright post is connected with two layers of connecting beams, and the bottom end and the top end between two adjacent auxiliary upright posts are both connected with a beam body structure which is the same as the connecting beam of the first layer, the main upright post and the auxiliary upright post are connected through a cross beam, the arrangement position of the cross beam is matched with the height of the auxiliary upright post, support columns are fixedly welded at the upper end of the cross beam and are arranged in pairs, and the upper end of the connecting rod is fixedly welded with a transverse connecting beam, and a longitudinal connecting beam is connected between adjacent transverse connecting beams, and the steel bracket structures are used in pairs, and the overall transverse section of the steel bracket structures is in an isosceles trapezoid structure when the steel bracket structures are used.

Preferably, the length scales of the first layer of connecting beam, the second layer of connecting beam and the third layer of connecting beam are the same.

Preferably, the vertical connecting beams are matched with the three layers of connecting beams in height, reinforcing beams are fixedly connected between the vertical connecting beams and the three layers of connecting beams, the reinforcing beams are arranged in an N shape, and form a plurality of triangular frame structures with the horizontal connecting beams.

Preferably, the bottom of crossbeam is connected with a supporting beam, supporting beam sets up in pairs, and its bottom fixed connection is on the cylinder of main pillar and vice stand respectively.

Preferably, the lower ends of the main upright post and the auxiliary upright post are fixedly welded with supporting blocks, the supporting blocks are of short cylindrical structures, and the diameter length of the supporting blocks is not less than three times of the side length of the upright posts.

Preferably, all the beam bodies at the upper ends of the main upright post and the auxiliary upright post are connected with the column body structure in a welding manner, and all the beam bodies, the column body structure and the surface of the support block at the bottom end of the upright post are coated with anticorrosive paint which is specifically inorganic zinc-rich primer

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

1. the reinforcing beam is fixedly arranged between the longitudinal connecting beam and the three layers of connecting beams, is arranged in an N shape, and forms a plurality of triangular frame structures with the transverse connecting beams, so that the stability between the longitudinal connecting beam and the three layers of connecting beams is improved, and the overall stability of the steel bracket device is improved;

2. and through the fixed welding supporting shoe in the lower extreme of main upright post and vice stand to the lifting surface area on increase main upright post and vice stand and ground, thereby make its fixed more firm on ground, and its stability can be stronger, thereby reach the purpose that improves device bulk strength.

Drawings

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

FIG. 2 is a schematic view of the present invention when used in combination;

FIG. 3 is a front effect diagram of the device of the present invention when used in combination;

fig. 4 is a side effect diagram of the device of the present invention when used in combination.

In the figure: the structure comprises a main upright post 1, an auxiliary upright post 2, a first-layer connecting beam 3, a second-layer connecting beam 4, a third-layer connecting beam 5, a cross beam 6, a support column 7, a transverse connecting beam 8, a longitudinal connecting beam 9, a reinforcing beam 10, a support beam 11 and a support block 12.

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.

Referring to fig. 1-4, the present invention provides a technical solution: a steel support device for foundation pit construction comprises main upright posts 1 and auxiliary upright posts 2 arranged beside the main upright posts 1, wherein the main upright posts 1 and the auxiliary upright posts 2 are both vertically arranged on the ground, the bottom end between every two adjacent main upright posts 1 is connected with a connecting beam 3, the top ends of the main upright posts are connected with three connecting beams 5, the positions which are parallel to the height of the auxiliary upright posts 2 are connected with two connecting beams 4, the bottom end and the top end between every two adjacent auxiliary upright posts 2 are both connected with a beam body structure which is the same as the connecting beam 3, the main upright posts 1 and the auxiliary upright posts 2 are connected through cross beams 6, the arrangement positions of the cross beams 6 are matched with the height of the auxiliary upright posts 2, the upper ends of the cross beams 6 are fixedly welded with support columns 7, the support columns 7 are arranged in pairs, the upper ends of the support columns are fixedly welded with transverse connecting beams 8, longitudinal connecting beams 9 are connected between the adjacent transverse connecting beams, when the device is used, the whole transverse section is of an isosceles trapezoid structure, the device is combined for use, and the section of the device is of the isosceles trapezoid structure, so that the whole stress is obliquely dispersed, and the stress is more uniform.

Furthermore, the length specifications of the first layer of connecting beam 3, the second layer of connecting beam 4 and the third layer of connecting beam 5 are the same;

furthermore, the vertical connecting beams 9 are matched with the three layers of connecting beams 5 in height, reinforcing beams 10 are fixedly connected between the vertical connecting beams 9 and the three layers of connecting beams 5, the reinforcing beams 10 are arranged in an N shape and form a plurality of triangular frame structures with the transverse connecting beams 8, the reinforcing beams 10 are fixedly arranged between the vertical connecting beams 9 and the three layers of connecting beams 5, the reinforcing beams 10 are arranged in an N shape and form a plurality of triangular frame structures with the transverse connecting beams 8, so that the stability between the vertical connecting beams 9 and the three layers of connecting beams 5 is improved, and the overall stability of the steel bracket device is improved;

furthermore, the bottom ends of the cross beams 6 are connected with support beams 11, the support beams 11 are arranged in pairs, the bottom ends of the support beams 11 are respectively and fixedly connected to the columns of the main upright post 1 and the auxiliary upright post 2, and the stress of the cross beams 6 is dispersed and borne by the support beams 11, so that the upper limit of the overall stress of the cross beams is improved;

furthermore, the lower ends of the main upright post 1 and the auxiliary upright post 2 are fixedly welded with supporting blocks 12, the supporting blocks 12 are in a short cylindrical structure, the diameter length of the supporting blocks 12 is not less than three times of the side length of the upright posts, and the supporting blocks 12 are fixedly welded at the lower ends of the main upright post 1 and the auxiliary upright post 2, so that the stress areas of the main upright post 1, the auxiliary upright post 2 and the ground are increased, the main upright post 1 and the auxiliary upright post 2 are more firmly fixed on the ground, the stability of the main upright post and the auxiliary upright post is stronger, and the aim of improving the;

furthermore, all the beam bodies at the upper ends of the main upright post 1 and the auxiliary upright post 2 are connected with the column body structure in a welding manner, and all the beam bodies, the column body structure and the surface of the upright post bottom end supporting block 12 are coated with anti-corrosion coating, and the anti-corrosion coating is specifically inorganic zinc-rich primer, so that the reduction of the overall strength of the device caused by corrosion is avoided.

The working principle is as follows: during the in-service use, through the fixed stiffening beam 10 that sets up between vertical tie-beam 9 and three-layer tie-beam 5, and set up stiffening beam 10 as the N style of calligraphy, and let constitute a plurality of triangle-shaped frame structures between it and the transverse connection roof beam 8, thereby improve the stability between vertical tie-beam 9 and the three-layer tie-beam 5, thereby improve steel support device's overall stability, and through the fixed welding supporting shoe 12 of lower extreme at head post 1 and auxiliary column 2, thereby increase the lifting surface area of head post 1 and auxiliary column 2 and ground, thereby let its fixed more firm on ground, and its stability can be stronger, thereby reach the purpose that improves device bulk strength, and when the device makes up the use, its cross-section is isosceles trapezoid structure, thereby let its whole atress be the slant dispersion, thereby let its atress more even.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a steel support device for foundation ditch construction, includes head mast (1) and sets up vice stand (2) next door at head mast (1), its characterized in that: the main columns (1) and the auxiliary columns (2) are both vertically arranged on the ground, the bottom end between every two adjacent main columns (1) is connected with one layer of connecting beam (3), the top end of each main column is connected with three layers of connecting beams (5), the positions which are highly parallel and level to the auxiliary columns (2) are connected with two layers of connecting beams (4), the bottom end and the top end between every two adjacent auxiliary columns (2) are both connected with beam body structures which are the same as the one layer of connecting beam (3), the main columns (1) and the auxiliary columns (2) are connected through cross beams (6), the arrangement positions of the cross beams (6) are matched with the heights of the auxiliary columns (2), support columns (7) are fixedly welded at the upper ends of the cross beams (6), the support columns (7) are arranged in pairs, transverse connecting beams (8) are fixedly welded at the upper ends of the support columns, and longitudinal connecting beams (9) are connected between the adjacent transverse, and the steel bracket structures are used in pairs, and the overall transverse section of the steel bracket structures is in an isosceles trapezoid structure when the steel bracket structures are used.

2. The steel bracket device for foundation pit construction according to claim 1, wherein: the length specifications of the first layer of connecting beam (3), the second layer of connecting beam (4) and the third layer of connecting beam (5) are the same.

3. The steel bracket device for foundation pit construction according to claim 1, wherein: the vertical connecting beam (9) is matched with the three layers of connecting beams (5) in height, a reinforcing beam (10) is fixedly connected between the vertical connecting beam (9) and the three layers of connecting beams (5), the reinforcing beam (10) is arranged in an N shape, and the reinforcing beam and the transverse connecting beams (8) form a plurality of triangular frame structures.

4. The steel bracket device for foundation pit construction according to claim 1, wherein: the bottom of crossbeam (6) is connected with a supporting beam (11), a supporting beam (11) sets up in pairs, and its bottom fixed connection is on the cylinder of main column (1) and vice stand (2) respectively.

5. The steel bracket device for foundation pit construction according to claim 1, wherein: the lower ends of the main upright post (1) and the auxiliary upright post (2) are fixedly welded with supporting blocks (12), the supporting blocks (12) are of short cylindrical structures, and the diameter and the length of the supporting blocks are not less than three times of the side length of the upright posts.

6. The steel bracket device for foundation pit construction according to claim 1, wherein: all the beam bodies at the upper ends of the main upright post (1) and the auxiliary upright post (2) are connected with the column body structure in a welding manner, and all the beam bodies, the column body structure and the surface of the upright post bottom supporting block (12) are coated with anticorrosive paint which is specifically inorganic zinc-rich primer.