Suspended safety channel for deep foundation pit

Abstract

The utility model provides a deep foundation pit suspension safety channel which comprises a cantilever beam vertically installed on the side edge of the top of a top beam of a foundation pit through structures such as embedded parts and further comprises a shelving beam platform located below the cantilever beam and formed by welding a plurality of longitudinal shelving beams and transverse shelving beams. A suspension column is mounted between the cantilever beam and the shelving beam platform, and an inclined supporting beam is further mounted between the cantilever beam and the foundation pit support cast-in-place pile below the top beam through an embedded part and other structures; a disc buckle type safety crawling ladder is erected on the shelving beam platform, and a platform is erected on the upper portion of the disc buckle type safety crawling ladder to lead to the crown beam. In the subsequent deep foundation pit construction, the device can be continuously used and is not influenced by earth excavation and foundation pit support dismantling procedures, the cost of repeated building and dismantling is saved, and the problems that the upper safety channel and the lower safety channel of the deep foundation pit are limited by earth excavation and need to be built and dismantled for many times, and the cost of manpower and material resources is high are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, in particular to a suspended safety passage in a deep foundation pit. Background Art

[0002] With the development of the construction industry and the resulting shortage of land for urban construction, deep foundation pit projects exceeding 5 meters or even deeper are becoming increasingly common. Furthermore, due to site constraints, deep foundation pit projects are often excavated vertically. In such deep foundation pit projects, safe passages are required to facilitate workers' access to and from the pit. However, as the earthwork is excavated layer by layer, these passages must be erected and dismantled multiple times, consuming significant manpower and material resources, and the erection and dismantling process impacts on-site construction progress. To address these issues, this utility model designs a novel suspended safe passage for deep foundation pits. Utility Model Content

[0003] In response to the deficiencies in the prior art, the utility model provides a suspended safety passage for a deep foundation pit, which solves the problem that the upper and lower safety passages in the deep foundation pit are restricted by excavation, require multiple erection and dismantling, and have high manpower and material costs.

[0004] The utility model achieves the above technical objectives through the following technical means.

[0005] A suspended safety passage for a deep foundation pit comprises a cantilever beam installed at the side of the top of the foundation pit crown beam, a beam-retaining platform is connected to the bottom of the cantilever beam via a suspension column, a disc-type safety ladder is erected on the beam-retaining platform, and a platform is erected on the upper part of the disc-type safety ladder leading to the crown beam; a diagonal bracing beam is also installed between the cantilever beam and the foundation pit retaining cast-in-place piles below the crown beam.

[0006] Furthermore, the shelving beam platform is welded together by two longitudinal shelving beams arranged in a direction perpendicular to the crown beam and three transverse shelving beams arranged in a direction parallel to the crown beam, and the transverse shelving beams are located above the longitudinal shelving beams. The spacing of the transverse shelving beams matches the vertical pole module of the disc-type safety ladder.

[0007] Furthermore, the cantilever beams and diagonal bracing beams are installed and fixed to the crown beams and foundation pit retaining cast-in-place piles through embedded parts, and the embedded parts are embedded in advance during the construction of the crown beams and foundation pit retaining cast-in-place piles.

[0008] The utility model has the following beneficial effects:

[0009] In the construction of deep foundation pits, the utility model can be used sustainably and is not affected by the earth excavation and foundation pit support removal processes, saving the cost of repeated erection and dismantling. In addition, the overall production is simple and easy to use. The utility model solves the problem that the upper and lower safety passages of deep foundation pits are restricted by excavation, require multiple erection and dismantling, and have high manpower and material costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic elevation diagram of the deep foundation pit suspended safety passage of the utility model;

[0011] Figure 2 It is a plan view of the deep foundation pit suspended safety passage described in the utility model.

[0012] In the figure: 1-cantilever beam, 2-suspension column, 3-longitudinal shelf beam, 4-transverse shelf beam, 5-diagonal bracing beam, 6-embedded parts, 7-triangular reinforcement plate, 8-crown beam, 9-foundation pit retaining cast-in-place piles. DETAILED DESCRIPTION

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0014] like Figure 1 、 2 As shown, the deep foundation pit suspended safety passage of the utility model includes two parts: a suspension system and a disc-type safety ladder; the suspension system includes a cantilever beam 1, a suspension column 2, a longitudinal shelving beam 3, a transverse shelving beam 4, and a diagonal bracing beam 5.

[0015] like Figure 1 、 2 As shown, during the construction of the foundation pit crown beam 8, the embedded parts 6 of the cantilever beam 1 are embedded in the concrete of the crown beam 8. Subsequently, the cantilever beam 1 is installed and fixed at the top side of the cantilever beam 1 through the embedded parts 6, and is perpendicular to the crown beam 8. Preferably, a triangular reinforcement plate 7 is also welded between the lower surface of the cantilever beam 1 and the embedded parts 6.

[0016] like Figure 1 、 2 As shown, three transverse support beams 4 are arranged parallel to the crown beam 8, and two longitudinal support beams 3 are arranged perpendicular to the crown beam 8. The transverse support beams 4 are located above the longitudinal support beams 3 and are welded together to form a support beam platform. A disc-type safety ladder or other type of ladder is set up on the support beam platform for people to climb up. The spacing of the transverse support beams 4 matches the vertical module of the disc-type safety ladder. Preferably, both the longitudinal support beams 3 and the transverse support beams 4 are made of I-beams.

[0017] like Figure 1 、 2 As shown, one end of the diagonal bracing beam 5 is welded to the cantilever beam 1, and the other end is fixed to the foundation pit retaining cast-in-place pile 9 through the embedded part 6. The embedded part 6 here is embedded in advance when the foundation pit retaining cast-in-place pile 9 is constructed.

[0018] like Figure 1 、 2 As shown, a suspension column 2 is welded and fixed between the cantilever beam 1 and the longitudinal shelf beam 3.

[0019] The method for making and using the deep foundation pit suspended safety passage described in the utility model in actual construction is as follows:

[0020] S1: According to the frame type and maximum erection height, select the corresponding specifications of cantilever beam 1, suspension column 2, longitudinal shelving beam 3, transverse shelving beam 4, diagonal bracing beam 5, and embedded parts 6;

[0021] S2: When pouring the foundation pit retaining piles 9, the embedded parts 6 of the diagonal bracing beam 5 are embedded; when pouring the crown beam 8, the embedded parts 6 of the cantilever beam 1 are embedded;

[0022] S3: After the concrete of crown beam 8 reaches the design strength, the suspension system is installed, including cantilever beam 1, suspension column 2, longitudinal shelving beam 3, transverse shelving beam 4, and diagonal bracing beam 5. One end of diagonal bracing beam 5 is welded to cantilever beam 1, and the other end is connected to foundation pit retaining cast-in-place pile 9 via embedded parts 6 (anchor plate and expansion bolts). The gap between the anchor plate and the cast-in-place pile concrete is filled with grouting material.

[0023] S4: A safety ladder with a disc buckle is set up on the beam-laying platform, and a platform is set up on the upper part of the ladder to lead to the crown beam 8;

[0024] S5: In the subsequent deep foundation pit construction, the utility model can be used continuously and is not affected by the earth excavation and foundation pit support removal process, saving the cost of repeated installation and dismantling.

[0025] The embodiments described are preferred implementations of the present invention, but the present invention is not limited to the above-mentioned implementations. Any obvious improvements, replacements or modifications that can be made by those skilled in the art without departing from the essential content of the present invention are within the scope of protection of the present invention.

Claims

1. A deep foundation pit suspended safety passage, characterized in that: The invention comprises a cantilever beam (1) installed at a side position of the top of the foundation pit crown beam (8); a beam-laying platform is connected to the bottom of the cantilever beam (1) through a suspension column (2); a disc-type safety ladder is set up on the beam-laying platform; a platform is set up on the upper part of the disc-type safety ladder to lead to the crown beam (8); and a diagonal bracing beam (5) is also installed between the cantilever beam (1) and the foundation pit retaining cast-in-place pile (9) below the crown beam (8).

2. The deep foundation pit suspended safety passage according to claim 1 is characterized in that: The shelving beam platform is welded together by two longitudinal shelving beams (3) arranged in a direction perpendicular to the crown beam (8) and three transverse shelving beams (4) arranged in a direction parallel to the crown beam (8), and the transverse shelving beams (4) are located above the longitudinal shelving beams (3). The spacing between the transverse shelving beams (4) matches the vertical pole module of the disc-type safety ladder.

3. The deep foundation pit suspended safety passage according to claim 1 is characterized in that: The cantilever beam (1) and the diagonal bracing beam (5) are both installed and fixed to the crown beam (8) and the foundation pit retaining cast-in-place piles (9) through embedded parts (6), and the embedded parts (6) are embedded in advance during the construction of the crown beam (8) and the foundation pit retaining cast-in-place piles (9).

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