Fabricated rib plate for groove foundation pit supporting system

Abstract

The utility model relates to an assembly type rib plate for a groove foundation pit supporting system, which is of a flat plate-shaped structure, a clamping groove connected with an assembly type stand column is arranged on the outer side of the flat plate-shaped structure in the width direction, and at least one hoisting piece is arranged on one side of the flat plate-shaped structure in the length direction. The supporting system has the advantages that the supporting system is designed to be of a flat plate-shaped structure with the clamping grooves and the hoisting pieces and can be connected with assembly type stand columns, the technical defects that a traditional pile supporting system is low in construction speed and long in construction period are overcome, the turnover efficiency and economical efficiency of the supporting system structure are improved, and compared with construction of a traditional slope method, the foundation pit excavation and backfill work amount is reduced; and the safety degree of the construction process is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to civil engineering construction technical field, concretely is a kind of assembly ribbed slab for trench foundation pit supporting system. BACKGROUND

[0002] The foundation pit excavated for laying pipeline is generally narrow strip foundation pit, and the exposure time of pipeline foundation pit is generally short. In conventional construction, for the foundation pit with an excavation depth of 3-5 m, the slope excavation or steel sheet pile vertical supporting method is generally adopted, which has the following shortcomings:

[0003] 1. The slope excavation is only applicable to the case where the surrounding site is open and the deformation requirement of the foundation pit is loose.

[0004] 2. When the slope method is constructed, the earthwork excavation and backfilling amount is large.

[0005] 3. When the slope method is constructed, the on-site construction management is difficult, and the construction has randomness, for example, the excavation slope is steep, and the slope surface is not closed in time, which may induce accidents such as collapse of the trench wall soil, personnel injury and death, etc.

[0006] 4. The supporting system of steel sheet pile plus internal support needs a series of processes such as hole drilling, sand backfilling, pile insertion, pile pulling, and grouting in the site with good geological conditions and hard soil, the construction time of the supporting system is long, the supporting cost is high, and for the narrow pipeline foundation pit, the construction turnover efficiency of the supporting structure is low. UTILITY MODEL CONTENTS

[0007] The utility model provides an assembly ribbed slab for trench foundation pit supporting system, which is easy to assemble, convenient to disassemble, safe and stable.

[0008] The utility model solves the above technical problems by the following technical scheme: an assembly ribbed slab for trench foundation pit supporting system, which is a flat plate structure, and is provided with a clamping groove connected with an assembly column on the outer side in the width direction of the flat plate structure, and is provided with at least one hoisting piece in the length direction of one side of the flat plate structure.

[0009] As a further technical scheme, the flat plate structure includes two side plates, two channel steels and two face plates.

[0010] The side plates and the channel steels are located in the width direction and the length direction of the flat plate structure respectively, so that the side plates and the channel steels are enclosed as a frame structure, and one face plate is arranged on each of the upper and lower surfaces of the frame structure.

[0011] As a further technical solution, the clamping groove is composed of two symmetrical angle steels, and the two angle steels are arranged on the inner side walls of the two panels respectively, so that the angle steel and the side plate enclose the clamping groove of the connected assembly column.

[0012] As a further technical solution, the lifting member includes a T-shaped steel and a head plate, the head plate is provided with two plates and is symmetrically arranged on both sides of the T-shaped steel to enclose the T-shaped steel into a U-shaped structure with an opening outward in cross-section structure, and a lifting hole is arranged on the web plate of the T-shaped steel in the vertical direction.

[0013] The two faces of the head plate in the height direction are connected with the corresponding panels on the side;

[0014] One lifting member divides the channel steel on the side into at least two sections.

[0015] As a further technical solution, the steel is arranged in the length direction and width direction inside the flat plate structure to constitute a grid type supporting the panel.

[0016] As a further technical solution, a reinforcing plate is arranged in the width direction of the flat plate structure.

[0017] As a further technical solution, the reinforcing plate is arranged between the channel steel and the steel, and between adjacent steels.

[0018] As a further technical solution, at least one notch is arranged along the edge of the panel in the length direction on one side to adapt to the lifting member.

[0019] The beneficial effects of the utility model are:

[0020] 1. The flat plate structure with clamping grooves and lifting members can connect the assembly column, solve the technical defects of slow construction speed and long construction period of the traditional pile support system, improve the turnover efficiency and economy of the support system structure, and reduce the excavation and backfill engineering quantity of the foundation pit;

[0021] 2. The assembly rib plate of the structure can also be temporarily used as a roadbed box of a temporary construction road on the top of a narrow foundation pit, and provides a solid support platform for construction equipment and vehicles. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural diagram of the assembly rib plate for the trench foundation support system;

[0023] Figure 2 It is Figure 1 It is a structural diagram of the assembly rib plate without the upper panel;

[0024] Figure 3 It isFigure 1 A middle assembly ribbed plate along the width direction of the middle axis section view

[0025] Figure 4 For Figure 3 A middle ribbed plate large sample drawing;

[0026] Figure 5 For Figure 2 A T-shaped steel structure diagram of the hoisting member 3;

[0027] Figure 6 For Figure 2 A front view of the T-shaped steel of the hoisting member 3;

[0028] Figure 7 For Figure 2 A left view structure diagram of the T-shaped steel of the hoisting member 3.

[0029] In the drawings, the components represented by each reference numeral are listed as follows:

[0030] Flat plate structure 1, side plate 11, channel steel 12, panel 13, notch 131, shaped steel 14, ribbed plate 15;

[0031] Clamping groove 2, angle steel 21;

[0032] Hoisting member 3, T-shaped steel 31, hoisting hole 311, head plate 32. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0034] In the description of the present application, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0035] In the description of the present application, the term "for example" is used to mean "serving as an instance, illustration, or example". Any embodiment described as "for example" in the present application is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is presented to enable any person skilled in the art to make and use the present application. In the following description, for the purpose of explanation, details are set forth. It is apparent to those skilled in the art that the present application can be practiced without the use of these specific details. In other instances, well-known structures and processes are not elaborated in order not to obscure the description of the present application with unnecessary details. Thus, the present application is not intended to be limited by the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

[0036] Embodiment 1

[0037] The pipe trench assembly type green support system is a safe, efficient, economical and green support system. In combination with the commonly used steel in China, the embodiment provides an assembly type rib plate for trench foundation pit support system which is easy to assemble, convenient to disassemble, safe and stable, and can be connected in the assembly type trench support system with T-shaped joints. Referring to Figures 1-4 , the specific structure can be a flat plate structure 1, and a clamping groove 2 for connecting the assembly type stand is arranged on the outer side of the flat plate structure 1 in the width direction. At least one hoisting piece 3 is arranged along the length direction of one side of the flat plate structure 1.

[0038] For example, the hoisting piece 3 can be used as the main structure during the hoisting of the entire assembly type rib plate structure, which is convenient for hoisting to the construction site.

[0039] In the specific implementation process, referring to Figures 5-7 , the flat plate structure 1 includes two side plates 11, two channel steels 12 and two face plates 13.

[0040] The side plates 11 and the channel steels 12 are respectively arranged in the width direction and the length direction of the flat plate structure 1, so that the side plates 11 and the channel steels 12 are enclosed as a frame structure, and one of the face plates 13 is arranged on the upper surface and the lower surface of the frame structure, that is, the upper surface and the lower surface of the side plates 11 and the channel steels 12 are respectively connected with the upper face plate 13 and the lower face plate 13. For example, the side plates 11, the channel steels 12 and the face plates 13 are welded.

[0041] Further, the clamping groove 2 is composed of two symmetrical angle steels 21, and the two angle steels 21 are respectively arranged on the inner side walls of the two face plates 13, so that the angle steels 21 and the side plates 11 enclose the clamping groove 2 for connecting the assembly type stand.

[0042] For example, two of the angle steels 21 are opposite in the height direction, and one side of the angle steel 21 connected with the panel 13 can extend out of the panel 13, and the specific extension length is determined according to the size of the column to be assembled.

[0043] The angle steel 21 and the panel 13 can be welded.

[0044] In the implementation process, the lifting piece 3 comprises a T-shaped steel 31 and a head plate 32, the head plate 32 is provided with two plates and is symmetrically arranged on both sides of the T-shaped steel 31 to form a U-shaped structure with the T-shaped steel 31, and the head plate 32 is arranged in a cross-section structure with an opening outward; the lifting hole 311 is arranged on the vertical web of the T-shaped steel 31, that is, the lifting hole 311 is arranged on the vertical edge of the T-shaped steel 31 to serve as a lifting point for transporting the assembled ribbed slab.

[0045] Both sides of the head plate 32 in the height direction are connected with the corresponding side of the panel 13; one lifting piece 3 divides the channel steel 12 on the side into at least two sections, for example, two lifting pieces 3 are arranged on the assembled ribbed slab, and the channel steel 12 on the side is divided into three sections, for example, into three equal sections, so that the stress is more uniform during lifting.

[0046] Correspondingly, at least one notch 131 is arranged on the edge of the panel 13 along the length direction of one side of the panel 13 to match the lifting piece 3. When two lifting pieces 3 are arranged, two notches 131 are arranged on the edge of the panel 13 along the length direction of one side of the panel 13.

[0047] In the implementation process, in order to strengthen the strength of the assembled ribbed slab, improve the stability and service life, the profile steel 14 is arranged in the length direction and the width direction inside the flat plate structure 1 to form a grid type to support the panel 13. The ribbed plate 15 is arranged in the width direction inside the flat plate structure 1.

[0048] For example, the profile steel 14 is an H-shaped steel; the ribbed plate 15 is designed to strengthen the rigidity of the entire assembled ribbed slab, and the ribbed plate 15 is a hot-rolled steel plate and is processed by cutting the steel plate.

[0049] In order to further improve the strength of the assembled ribbed slab, the ribbed plate 15 is arranged between the channel steel 12 and the profile steel 14 and between adjacent profile steels 14, and the ribbed plate 15 is connected with the channel steel 12 and the profile steel 14 by welding.

[0050] The utility model is illustrated as follows:

[0051] 1. An assembled ribbed slab with a length of 2.6 meters, a height of 1.5 meters and a thickness of 14.6 centimeters is composed of the following components:

[0052] The angle steel size adopts L75x50x10mm (wherein, 75 represents the length of the long side of the angle steel, 50 represents the length of the short side of the angle steel, and 10 represents the thickness of the angle steel), the channel steel adopts [12.6 (wherein, 12.6 represents the height of the channel steel is 12.6cm), the H-shaped steel adopts HW125x125x6.5x9mm (wherein, the first 125 represents the height of the H-shaped steel, the second 125 represents the width of the flange, 6.5 represents the thickness of the web, and 9 represents the thickness of the flange), the face plate, the reinforced plate and the head plate all adopt the steel plate with the thickness of 10mm, and the T-shaped steel adopts TW100x204x12x12mm (wherein, 100 represents the height of the T-shaped steel, 204 represents the width of the flange, the first 12 represents the thickness of the web, and the second 12 represents the thickness of the web).

[0053] An assembled ribbed slab applied to a pipeline trench assembled green support system relates to an implementation process:

[0054] (1) Before the trench foundation pit excavation construction, according to the foundation pit depth and soil conditions, the specification of the assembled trench box support structure system and the specification of the matched assembled ribbed slab are determined. Then at least 2-3 standard sections of trench box devices are completed for standby, including 6-12 assembled ribbed slabs;

[0055] (2) On the ground on both sides of the proposed trench, the stand column piles of the construction assembled trench box are inserted at the interval of the length of the ribbed slab, and the main frame system of the assembled support is formed.

[0056] (3) The central part of the trench is excavated to the height of the first layer of ribbed slab by using the vertical surface or large-angle steep slope and mechanical excavation.

[0057] (4) The assembled ribbed slab is hoisted, and the two ends of the ribbed slab are aligned and parallel to the side wall of the trench, so that the clamping groove at the two ends of the ribbed slab is slid and clamped into the circumferential connection T-shaped steel bar of the assembled trench box stand column.

[0058] (5) After the first layer of assembled ribbed slab on both sides of the foundation pit is assembled, the first layer of steel support of the trench box system is installed, and then the central part of the trench is excavated to the height of two layers of ribbed slab, so that the first layer of assembled ribbed slab continues to slide down with the earth excavation until the bottom of the pit.

[0059] (6) The second layer of ribbed slab is hoisted and falls on the top of the first layer of ribbed slab, and the installation of the assembled ribbed slab of the side wall of the foundation pit is completed.

[0060] (7) The trench box support system is continuously improved, the gap of the clamping groove between the two sections of the ribbed box is filled with steel wedges and solid wood bars, and the second layer of steel support of the trench box system is installed.

[0061] (8) After the trench box forming 2-3 standard units is installed, the remaining soil in the pit is excavated, and then the pipeline laying in the pit is carried out.

[0062] (9) After the pipeline laying in the first section trench box is completed, the pipeline is initially backfilled to the middle depth of the foundation pit, and then the second layer of rib plate, the first layer of rib plate are hoisted and pulled out in turn, the foundation pit is backfilled to the ground, and finally the frame body composed of the column pile and the support is pulled out.

[0063] (10) The assembled rib plate, support and column pile pulled out are transferred to the next section of the trench area to be excavated, and the above steps are repeated for flow cycle operation until the end of the project.

[0064] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0065] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0066] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A fabricated slab for a trench foundation support system, characterized by, The application discloses a flat plate structure (1) which is provided with a clamping groove (2) for connecting and assembling a column on the outer side of the flat plate structure (1) in the width direction of the flat plate structure (1), and is provided with at least one hoisting piece (3) in the length direction of one side of the flat plate structure (1).

2. The fabricated ribbed slab as claimed in claim 1, wherein, The flat plate structure (1) comprises two side plates (11), two channel steels (12) and two face plates (13). The side plates (11) and the channel steels (12) are arranged in the width direction and the length direction of the flat plate structure (1) respectively, so that the side plates (11) and the channel steels (12) are enclosed into a frame structure, and one face plate (13) is arranged on the upper surface and the lower surface of the frame structure respectively.

3. The fabricated ribbed slab as claimed in claim 2, wherein, The clamping groove (2) is composed of two symmetrical angle steels (21), and the two angle steels (21) are arranged on the inner side walls of the two face plates (13) respectively, so that the angle steels (21) and the side plates (11) are enclosed into the clamping groove (2) for connecting and assembling a column.

4. The fabricated ribbed slab as claimed in claim 2, wherein, The hoisting piece (3) comprises a T-shaped steel (31) and a head plate (32), the head plate (32) is symmetrical and arranged on the two sides of the T-shaped steel (31), so as to be enclosed into a U-shaped structure with the opening outward in the cross section structure; the T-shaped steel (31) is vertically provided with a hoisting hole (311) in the web surface. The head plate (32) is connected with the corresponding face plate (13) in the height direction. One hoisting piece (3) divides the channel steel (12) on the same side into at least two sections.

5. The fabricated ribbed slab as claimed in claim 2, wherein, The channel steel (14) is arranged in the length direction and the width direction of the flat plate structure (1) to constitute a grid type support for the face plate (13).

6. The fabricated ribbed slab as claimed in claim 5, wherein, The reinforcing plate (15) is arranged in the width direction of the flat plate structure (1).

7. The fabricated ribbed slab as claimed in claim 6, wherein, The reinforcing plate (15) is arranged between the channel steel (12) and the channel steel (14) and between adjacent channel steels (14).

8. The fabricated ribbed slab as claimed in claim 4, wherein, At least one notch (131) is arranged on the edge of one side of the face plate (13) in the length direction, so as to be matched with the hoisting piece (3).

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