Horizontal steel supporting system provided with unearthed steel platform

Abstract

The utility model relates to a horizontal steel supporting system provided with an unearthed steel platform. The horizontal steel supporting system comprises inner side steel sheet piles, outer side steel sheet piles, supporting columns, a roadbed box and square steel pipe supports. The inner side steel sheet piles are arranged on the edge of the deep foundation pit, the outer side steel sheet piles are arranged outside the deep foundation pit, the square steel pipe supports are arranged in the deep foundation pit, the top pressing beams are arranged on the tops of the inner side steel sheet piles and the outer side steel sheet piles, and the supporting columns are installed above the top pressing beams and the square steel pipe supports. The utility model has the beneficial effects that: by adopting the rapid construction technology of the assembled soil-retaining steel plate, the top of the soil-retaining steel plate is provided with the fixed plate which is arranged in the fixed groove reserved in the fixed square column, the steel plate is reinforced and fixed by penetrating through the arc-shaped connecting plate on the steel plate through the bolt, and the back of the steel plate is welded with the positioning rod which is arranged in the positioning groove of the square steel pipe support; stable structural connection is formed between the square steel pipe supports and the supporting columns and between the square steel pipe supports and the soil retaining steel plates, construction safety is guaranteed, and assembling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of horizontal steel supports, in particular to a horizontal steel support system provided with an earth excavation steel platform. Background Art

[0002] During the construction of deep foundation pit projects, in order to ensure the safety of the foundation pit project and the surrounding environment, support construction is required. In recent years, due to the advantages of the prestressed H-shaped steel assembled combined internal support system, such as large stiffness, fast construction speed, and good deformation control effect, it has been widely used in deep foundation pit construction. However, it is found in actual construction that since vehicles cannot pass over the steel support, the difficulty of excavating and transporting soil in the foundation pit is large, and there are significant safety hazards in the foundation pit construction. Therefore, a new steel support system must be developed to avoid the situation of vehicle pressing on the support and to be able to support immediately after reaching the elevation, ensuring the safety of the foundation pit and the surrounding environment. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a horizontal steel support system provided with an earth excavation steel platform.

[0004] This horizontal steel support system provided with an earth excavation steel platform includes an inner steel sheet pile, an outer steel sheet pile, a support column, a roadbed box, and a square steel pipe support;

[0005] The inner steel sheet pile is arranged at the edge of the deep foundation pit, the outer steel sheet pile is arranged outside the deep foundation pit, the square steel pipe support is arranged inside the deep foundation pit, a coping beam is provided at the top of the inner steel sheet pile and the outer steel sheet pile, the support column is installed above the coping beam and the square steel pipe support, and the roadbed box is installed on the support column for the transport vehicle to travel;

[0006] A retaining steel plate is provided outside the square steel pipe support, and the top end of the retaining steel plate is fixed below one end of the support column.

[0007] Preferably, the deep foundation pit is provided with an inner steel sheet pile and an outer steel sheet pile, the support columns are evenly arranged, and adjacent support columns are connected to each other through a tie rod. Plug blocks are welded at both ends of the tie rod, and corresponding jacks are provided on both sides of the support column, and the plug blocks are inserted into the jacks.

[0008] Preferably, the roadbed box is laid above the support column, plug blocks and jacks are respectively provided on both sides of the roadbed box, and adjacent roadbed boxes are connected to each other through the plug blocks and the jacks.

[0009] Preferably, a fixing plate is provided at the top of the retaining steel plate, a fixing square column is provided below one end of the support column corresponding to the retaining steel plate, a fixing groove is reserved at the bottom of the fixing square column, the fixing plate is inserted into the fixing groove, arc-shaped connecting plates are provided on both sides of the retaining steel plate, and adjacent retaining steel plates are fixed by bolts passing through the arc-shaped connecting plates thereon.

[0010] Preferably, a cylindrical insertion block is provided at the top of the square steel pipe support, and a reserved hole is provided at the bottom of the support column. The cylindrical insertion block is inserted into the reserved hole at the bottom of the support column; a positioning rod is welded behind the retaining steel plate, and a positioning groove for the positioning track is installed on the side of the square steel pipe support, and the positioning rod is inserted into the positioning groove.

[0011] Preferably, the transport vehicle transports the soil on the subgrade box, and an H-shaped steel support beam is erected at a certain height in the foundation pit.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1) The present utility model adopts the rapid construction technology of assembled retaining steel plates. A fixing plate is provided at the top of the retaining steel plate and placed in the fixing groove reserved in the fixed square column. At the same time, the steel plate is strengthened and fixed by bolts passing through the arc-shaped connecting plates thereon. A positioning rod is welded behind the steel plate and placed in the positioning groove of the square steel pipe support, so that the square steel pipe support forms stable structural connections with the support column and the retaining steel plate respectively, ensuring the safety of construction and improving the assembly efficiency.

[0014] 2) The present utility model installs the support column and lays the subgrade box through the capping beam at the top of the inner steel sheet pile and the outer steel sheet pile, and is used for the transport vehicle to drive, avoiding the situation of the vehicle pressing on the support. Description of the Drawings

[0015] Figure 1 It is a sectional view of the horizontal steel support system for setting the soil excavation steel platform;

[0016] Figure 2 It is a schematic diagram of the structure of the unassembled retaining steel plate;

[0017] Figure 3 It is a schematic diagram of the structure of the retaining steel plate after assembly;

[0018] Figure 4 It is a flow chart of the earth excavation direction.

[0019] Description of the reference numerals: 2 - inner steel sheet pile, 12 - arc-shaped connecting plate, 38 - outer steel sheet pile, 39 - capping beam, 40 - support column, 41 - subgrade box, 42 - H-shaped steel support beam, 43 - square steel pipe support, 44 - fixed square column, 45 - retaining steel plate, 46 - positioning track, 47 - positioning groove, 48 - cylindrical insertion block, 49 - fixing groove, 50 - jack hole, 51 - insertion block, 52 - tie rod, 53 - positioning rod, 54 - fixing plate. Detailed Description of the Invention

[0020] The following further describes the present utility model in conjunction with embodiments. The description of the following embodiments is only for helping to understand the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

[0021] As an embodiment, as Figures 1 to 4 shown, this horizontal steel support system for the soil excavation steel platform includes an inner steel sheet pile 2, an arc connecting plate 12, an outer steel sheet pile 38, a capping beam 39, a support column 40, a roadbed box 41, an H-shaped steel support beam 42, a square steel pipe support 43, a fixed square column 44, a retaining steel plate 45, a positioning track 46, a positioning groove 47, a column-shaped insert block 48, a fixed groove 49, a jack 50, an insert block 51, a connecting rod 52, a positioning rod 53, and a fixing plate 54; the horizontal steel support system for the soil excavation steel platform adopts the rapid construction technology of the assembled retaining steel plate 45; the horizontal steel support system for the soil excavation steel platform adopts the soil excavation technology from near to far.

[0022] As Figure 1 shown, the inner steel sheet pile 2 is arranged at the edge of the deep foundation pit, the outer steel sheet pile 38 is arranged outside the deep foundation pit, the square steel pipe support 43 is arranged inside the deep foundation pit, the capping beam 39 is arranged at the tops of the inner steel sheet pile 2 and the outer steel sheet pile 38, the support column 40 is installed above the capping beam 39 and the square steel pipe support 43, and the roadbed box 41 is installed on the support column 40 for the transport vehicle to drive;

[0023] The retaining steel plate 45 is arranged outside the square steel pipe support 43, and the top end of the retaining steel plate 45 is fixed below one end of the support column 40.

[0024] As Figures 1 to 3 shown, for the rapid construction technology of the assembled retaining steel plate 45, the inner steel sheet pile 2 and the outer steel sheet pile 38 are arranged in the deep foundation pit, the capping beam 39 is arranged at the tops of the two steel sheet piles, and the capping beam 39 and the square steel pipe support 43 are used as load-bearing members to install the support column 40 and the roadbed box 41; among them, the support columns 40 are arranged evenly, and the adjacent columns are connected by the connecting rod 52 to strengthen the stability of the structure. The two ends of the connecting rod 52 are welded with the insert block 51, which can be directly inserted into the corresponding jack 50 arranged on the support column 40; the jacks 50 are correspondingly arranged on both sides of the support column 40, and the insert block 51 is inserted into the jack 50.

[0025] The roadbed box 41 is laid above the support column 40. The insert block 51 and the jack 50 are respectively arranged on both sides of the roadbed box 41. The adjacent roadbed box 41 modules are also quickly connected in the mode of the insert block 51 and the jack 50.

[0026] A fixing plate 54 is provided at the top of the retaining steel plate 45. A fixed square column 44 is provided below one end of the support column 40 corresponding to the retaining steel plate 45. The fixing plate 54 is placed in the fixing groove 49 reserved in the fixed square column 44. The fixing plate 54 is inserted into the fixing groove 49. Arc-shaped connecting plates 12 are provided on both sides of the retaining steel plate 45. Adjacent retaining steel plates 45 are fixed by bolts passing through the arc-shaped connecting plates 12 thereon.

[0027] A column-shaped insertion block 48 is provided at the top of the square steel pipe support 43 and is directly inserted into the reserved hole at the bottom of the support column 40. The column-shaped insertion block 48 is inserted into the reserved hole at the bottom of the support column 40. The positioning rod 53 welded behind the retaining steel plate 45 is placed in the positioning groove 47 of the positioning track 46 installed on the side of the square steel pipe support 43, so that the square steel pipe support 43 forms stable structural connections with the support column 40 and the retaining steel plate 45 respectively, ensuring the safety of the construction.

[0028] As Figure 4 shown, for the earth excavation technology from near to far, after the soil body is excavated, it is transported out by a transport vehicle through the roadbed box 41. Among them, after the earthwork is dug to the support elevation, the H-shaped steel support 42 is erected comprehensively and in a timely manner; when excavating the earthwork under the H-shaped steel support beam 42, the excavation method is adopted, and the excavation is carried out from near to far; after the transport vehicle goes down the ramp, the middle of the opposite bracing and corner bracing is also the same, only the middle passage is excavated, that is, the earthwork in the cloud line range at both ends of the support is reserved, so that the earth pressure can still be balanced after the passage is excavated, and then the earth is excavated to the bottom of the pit from far to near.

Claims

1. A horizontal steel support system for setting up an excavation steel platform, characterized in that: It includes inner steel sheet piles, outer steel sheet piles, support columns, roadbed boxes and square steel pipe supports; The inner steel sheet piles are arranged at the edge of the deep foundation pit, the outer steel sheet piles are arranged outside the deep foundation pit, the square steel pipe supports are arranged inside the deep foundation pit, the inner steel sheet piles and the outer steel sheet piles are provided with capping beams on top, the support columns are installed above the capping beams and the square steel pipe supports, and the roadbed box is installed on the support columns for the transport vehicle to travel; A retaining steel plate is arranged on the outer side of the square steel tube support, and the top end of the retaining steel plate is fixed below one end of the supporting column.

2. The horizontal steel support system for setting up an excavation steel platform according to claim 1 is characterized in that: Inner and outer steel sheet piles are set in the deep foundation pit, and the support columns are evenly distributed. Adjacent support columns are connected to each other by connecting rods. Plug blocks are welded at both ends of the connecting rods. Plug holes are provided on both sides of the support columns, and the plug blocks are inserted into the plug holes.

3. The horizontal steel support system for setting up an excavation steel platform according to claim 1 is characterized in that: The roadbed box is laid above the supporting column, and plug blocks and plug holes are respectively arranged on both sides of the roadbed box, and adjacent roadbed boxes are connected to each other through the plug blocks and the plug holes.

4. The horizontal steel support system for setting up an excavation steel platform according to claim 1 is characterized in that: A fixing plate is provided on the top of the retaining steel plate, and a fixing square column is provided below one end of the supporting column corresponding to the retaining steel plate. A fixing groove is reserved at the bottom of the fixing square column, and the fixing plate is inserted into the fixing groove. Arc-shaped connecting plates are provided on both sides of the retaining steel plate, and adjacent retaining steel plates are fixed by bolts passing through the arc-shaped connecting plates thereon.

5. The horizontal steel support system for setting up an excavation steel platform according to claim 1 is characterized in that: A columnar plug is provided on the top of the square steel tube support, and a reserved hole is provided at the bottom of the support column, into which the columnar plug is inserted; a positioning rod is welded behind the retaining steel plate, and a positioning groove for the track to be positioned is installed on the side of the square steel tube support, into which the positioning rod is inserted.

6. The horizontal steel support system for setting up an excavation steel platform according to claim 1 is characterized in that: The transport vehicle transports soil on the roadbed box, and an H-shaped steel support beam is set up at a certain height in the foundation pit.

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