Detachable inclined strut structure for supporting foundation pit

Abstract

The utility model relates to the field of building construction, in particular to a detachable foundation pit supporting inclined strut structure which comprises fender posts arranged on the inner wall of a foundation pit and a basement arranged in the foundation pit, top beams are arranged at the top ends of the fender posts, corbel supports are arranged on a bottom plate of the basement, and the corbel supports are arranged on the bottom plate of the basement. The main supporting piece and the auxiliary supporting piece are connected together; the lower end of the main supporting piece is connected with a bracket support, and the upper end of the auxiliary supporting piece is connected with the top beam. The auxiliary supporting piece comprises an upper auxiliary connecting plate and a lower auxiliary connecting plate, four pieces of angle steel are arranged between the upper auxiliary connecting plate and the lower auxiliary connecting plate in a rectangular array mode, a connecting angle plate is arranged between every two adjacent pieces of angle steel, and a water stop plate is arranged at the position, corresponding to the basement side wall, of each piece of angle steel. By the adoption of the two-section type structure, the structure can be assembled, a supporting system can be rapidly installed and dismantled, the construction period can be prolonged, and the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of building construction, in particular to a detachable foundation pit supporting diagonal bracing structure. Background Art

[0002] With the shortage of land for urban construction, the environment around deep and large foundation pits is becoming more and more complex. The foundation pits are close to buildings and pipelines. When the foundations of surrounding buildings are deep or the underground pipelines are buried deep, it is impossible to use the pile row + prestressed anchor cable support form. The pile row + diagonal support form can effectively solve the problem of prestressed anchor cables occupying underground space outside the foundation pit red line, and this support form is locally adopted with low cost.

[0003] The diagonal braces can be made of steel pipes or H-shaped steels. If large-diameter circular steel pipes are used as diagonal braces, they have better compressive bearing capacity. However, after the steel pipe diagonal braces are removed, large holes will be left on the outer wall of the basement, making it difficult to waterproof them in the later stage. This can easily cause problems such as water leakage on the outer wall of the basement, posing a greater safety hazard to the basement construction. If H-shaped steels are used as diagonal braces (such as the Chinese invention patent with application number 202111532214.X in the prior art, which discloses an I-shaped diagonal brace support system for a foundation pit and its construction method), the structure will need to cut off the complete I-shaped steel at the side wall in the later stage, and the reuse rate of the I-shaped steel in the later stage is very low, resulting in waste of construction materials. Utility Model Content

[0004] Based on the above problems, the purpose of the utility model is to provide a detachable foundation pit support diagonal brace structure, and the utility model adopts the following technical solutions:

[0005] The utility model provides a detachable foundation pit supporting diagonal brace structure, comprising guard piles arranged on the inner wall of the foundation pit and a basement arranged in the foundation pit, the top of the guard piles is provided with a crown beam, the bottom plate of the basement is provided with a corbel support, and also comprises a main support member and a secondary support member connected together; the lower end of the main support member is connected to the corbel support, and the upper end of the secondary support member is connected to the crown beam; the secondary support member comprises an upper secondary connecting plate and a lower secondary connecting plate, four angle steels are arranged in a rectangular array between the upper secondary connecting plate and the lower secondary connecting plate, a connecting angle plate is arranged between two adjacent angle steels, and a water stop plate is arranged on each of the angle steels at a position corresponding to the side wall of the basement.

[0006] Preferably, the main support member comprises an upper main connecting plate and a lower main connecting plate, and a main support column is arranged between the upper main connecting plate and the lower main connecting plate.

[0007] Preferably, the main support column is an H-shaped steel or a round tube.

[0008] Preferably, a supporting leg is provided below the main supporting column, the upper end of the supporting leg abuts against the main supporting column, and the lower end of the supporting leg abuts against the bottom plate of the basement.

[0009] Preferably, the supporting leg includes an ear plate, which is fixed to the bottom of the main supporting column, and an upper supporting leg is rotatably connected to the ear plate, a lower supporting leg is threadedly connected to the upper supporting leg, the lower supporting leg is connected to the supporting foot plate through a spherical structure, and an operating rod is provided on the lower supporting leg.

[0010] Compared with the prior art, the beneficial technical effects of the utility model are:

[0011] The utility model adopts a two-stage structure to realize the assembly of the structure, and can quickly install and dismantle the support system, which is beneficial to improving the construction period and reducing the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model will be further described below in conjunction with the accompanying drawings.

[0013] Figure 1 This is a front view of a detachable foundation pit support diagonal bracing structure in an embodiment of the utility model;

[0014] Figure 2 This is a front structural diagram of the secondary support member in the embodiment of the utility model;

[0015] Figure 3 for Figure 2 Sectional view in the AA direction;

[0016] Figure 4 for Figure 2 Cross-sectional view in the BB direction;

[0017] Figure 5 This is a front view of the main support member and the support legs in an embodiment of the utility model.

[0018] Explanation of the accompanying drawings: 1. Guarding piles; 2. Basement; 3. Crown beam; 4. Corbel support; 5. Main support member; 501. Upper main connecting plate; 502. Lower main connecting plate; 503. Main supporting column; 6. Auxiliary support member; 601. Upper auxiliary connecting plate; 602. Lower auxiliary connecting plate; 603. Angle steel; 604. Connecting angle plate; 605. Water stop plate; 7. Support leg; 701. Ear plate; 702. Upper supporting leg; 703. Lower supporting leg; 704. Spherical structure; 705. Support foot plate; 706. Operating lever. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] like Figures 1 to 4 As shown, this embodiment discloses a detachable foundation pit support diagonal bracing structure, including a retaining pile 1 arranged on the inner wall of the foundation pit and a basement 2 arranged in the foundation pit, a crown beam 3 is provided on the top of the retaining pile 1, and a corbel support 4 is provided on the bottom plate of the basement 2, and the above structures are all made of concrete.

[0021] In this embodiment, the main support member 5 and the secondary support member 6 are connected together by a bolt assembly; the lower end of the main support member 5 is fixed to the corbel support 4 by bolts, and the upper end of the secondary support member 6 is fixed to the crown beam 3 by bolts.

[0022] Among them, the secondary support member 6 includes an upper secondary connecting plate 601 and a lower secondary connecting plate 602, four angle steels 603 are welded in a rectangular array between the upper secondary connecting plate 601 and the lower secondary connecting plate 602, a connecting angle plate 604 is welded between two adjacent angle steels 603, and a water stop plate 605 is welded on each angle steel 603 at a position corresponding to the side wall of the basement 2.

[0023] After the construction is completed, the main support 5 and the secondary support 6 are disassembled and separated, and then the secondary support 6 is cut off along the inner and outer wall surfaces of the side wall of the basement 2. In this way, the complete main support 5 can be retained and reused later. The secondary support 6 is welded by low-cost angle steel and iron plate, which is easy to process and also easy to cut and remove later.

[0024] In this embodiment, Figure 5 As shown, the main support member 5 includes an upper main connecting plate 501 and a lower main connecting plate 502, and a main support column 503 is welded between the upper main connecting plate 501 and the lower main connecting plate 502. The main support column 503 is an H-shaped steel or a round tube. The upper main connecting plate 501 is connected to the lower auxiliary connecting plate 602 through a bolt assembly, and the lower main connecting plate 502 is fixed to the corbel support 4 through bolts or anchor rods.

[0025] In this embodiment, a support leg 7 is provided below the main support column 503, the upper end of the support leg 7 abuts against the main support column 503, and the lower end abuts against the bottom plate of the basement 2. The support leg 7 can provide auxiliary support for the heavier main support member 5, so as to improve the stability of the supporting brace structure.

[0026] Among them, the supporting leg 7 includes an ear plate 701, which is welded to the bottom of the main supporting column 503. The upper supporting leg 702 is rotatably connected to the ear plate 701, and the lower supporting leg 703 is threadedly connected to the upper supporting leg 702. The lower supporting leg 703 is connected to the supporting foot plate 705 through a spherical structure 704. An operating rod 706 is provided on the lower supporting leg 703, and the supporting strength of the supporting leg 7 can be changed by rotating the operating rod 706.

[0027] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A detachable foundation pit support diagonal bracing structure, comprising a retaining pile (1) arranged on the inner wall of a foundation pit and a basement (2) arranged in the foundation pit, a crown beam (3) being arranged on the top of the retaining pile (1), and a corbel support (4) being arranged on the bottom plate of the basement (2), characterized in that: It also includes a main support member (5) and a secondary support member (6) connected together; the lower end of the main support member (5) is connected to the corbel support (4), and the upper end of the secondary support member (6) is connected to the crown beam (3); The secondary support member (6) comprises an upper secondary connecting plate (601) and a lower secondary connecting plate (602), four angle steels (603) are arranged in a rectangular array between the upper secondary connecting plate (601) and the lower secondary connecting plate (602), a connecting angle plate (604) is arranged between two adjacent angle steels (603), and a water stop plate (605) is arranged on each angle steel (603) at a position corresponding to the side wall of the basement (2).

2. The detachable foundation pit support brace structure according to claim 1 is characterized in that: The main support member (5) comprises an upper main connecting plate (501) and a lower main connecting plate (502), and a main support column (503) is arranged between the upper main connecting plate (501) and the lower main connecting plate (502).

3. The detachable foundation pit support brace structure according to claim 2 is characterized in that: The main support column (503) is an H-shaped steel or a round tube.

4. The detachable foundation pit support brace structure according to claim 2 is characterized in that: A supporting leg (7) is provided below the main supporting column (503), the upper end of the supporting leg (7) abuts against the main supporting column (503), and the lower end abuts against the bottom plate of the basement (2).

5. The detachable foundation pit support brace structure according to claim 4 is characterized in that: The support leg (7) comprises an ear plate (701), wherein the ear plate (701) is fixed to the bottom of the main support column (503), an upper support leg (702) is rotatably connected to the ear plate (701), a lower support leg (703) is threadedly connected to the upper support leg (702), the lower support leg (703) is connected to the support foot plate (705) via a spherical structure (704), and an operating rod (706) is provided on the lower support leg (703).

Images