Plugging device applied to trestle opening of foundation pit

Abstract

The utility model provides a plugging device applied to a trestle opening of a foundation pit, belongs to the technical field of building construction, and effectively solves the problem that a cover plate of the trestle opening of the foundation pit is poor in stress performance at present. According to the technical scheme, the combined plate is matched with a hole in a clamped mode and is of a bucket-shaped structure, a plurality of studs are evenly arranged on the inner side of the combined plate, a horizontally-arranged reinforcing mesh is fixedly connected to the upper side of the combined plate, concrete is poured on the inner side of the combined plate, and the combined plate is made of a steel plate. The plugging device applied to the trestle hole of the foundation pit has the advantages that the size of a notch of a hole supporting beam can be reduced, and meanwhile the bearing capacity can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building construction, specifically relates to a plugging device for the pit trestle portal. BACKGROUND

[0002] The pit trestle belongs to the pit support system and generally adopts the cast-in-situ concrete structure form. When the building is in the basement construction stage, if the vertical hoisting of the main structure component is to be carried out at the covered position of the trestle plate, the hole needs to be dug in the trestle plate, and the concrete needs to be poured to close the hole after the hoisting is completed. This kind of construction measure is time-consuming and laborious, and will have an adverse effect on the safety of the trestle. The more advanced construction measure is to reserve the hole in the trestle plate, groove the support beam around the hole to form the L-shaped beam, and then cover the hole with the prefabricated plate. The opening and closing of the hole can be realized by hoisting the cover plate, which is like the common road manhole cover. The stress mode of the prefabricated plate is the simply supported plate, and the stress performance of the prefabricated plate is worse than that of the continuous plate stress mode of the cast-in-situ plate. If the same bearing capacity as the cast-in-situ plate is to be achieved, the thickness of the plate needs to be increased, which will make the groove of the beam larger and the stress performance of the beam worse, so the cross section of the beam needs to be increased. At the same time, the increase of the cross section of the prefabricated plate and the beam will obviously increase the construction cost.

[0003] Therefore, how to solve the above technical problems has become the subject faced by the utility model. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a plugging device for the pit trestle portal which can not only reduce the size of the groove of the hole support beam but also guarantee the bearing capacity.

[0005] The utility model adopts the technical scheme that a plugging device for the pit trestle portal is provided, which comprises a combined plate in the shape of a back shape and a structure of a bucket, a plurality of pegs are uniformly arranged on the inner side of the combined plate, a steel mesh horizontally arranged is fixedly connected to the upper side of the combined plate, and the inner side of the combined plate is poured with concrete.

[0006] The material of the combined plate is a steel plate.

[0007] The combined plate comprises a rectangular frame structure and a horizontally arranged edge plate, vertical upward arranged vertical plates are fixedly connected at the top four peripheral edges of the edge plate, a rectangular center plate is arranged at the lower side of the edge plate, the side length of the center plate is smaller than that of the edge plate, the center point of the center plate and the center point of the edge plate are located on the same vertical line, an inclined plate is fixedly connected between each side outer edge of the center plate and the outer edge on the same side of the edge plate, and adjacent two inclined plates are closely attached and fixedly connected.

[0008] The combined plate adopts a variable cross-section structure, the cross-section height of the edge plate is small, the slot size of the hole support beam can be reduced, and the stress of the beam is beneficial; the cross-section height of the inclined plate increases from small to large, the cross-section height of the center plate is large, and the mid-span region is the maximum stress region, which can effectively improve the bearing capacity of the plate.

[0009] The top of the edge plate, the center plate and the inclined plate is fixedly connected with a plurality of vertically upward arranged studs, the studs have the same length, and the top surface of the studs located on the edge plate is located below the top surface of the vertical plate. The combined plate and the concrete are jointly stressed to make the studs as the lower stress reinforcement of the device.

[0010] The steel mesh comprises a plurality of mutually parallel and equidistantly arranged horizontal steel bars and a plurality of mutually parallel and equidistantly arranged vertical steel bars, the horizontal steel bars and the vertical steel bars are perpendicular to each other and fixedly connected, and the two ends of the horizontal steel bars and the vertical steel bars are fixedly connected with vertical downward arranged vertical bars;

[0011] The bottom end of the vertical bar is fixedly connected with the top of the edge plate on the same side, and the top surface of the steel mesh is located below the top surface of the vertical plate and above the top surface of the stud.

[0012] The steel mesh serves as the upper stress reinforcement of the device. After the concrete is poured, the combined plate, the steel mesh and the concrete are jointly stressed to form the stress system of the device.

[0013] The upper side of the four corners of the edge plate is provided with a lifting box fixedly connected with the inner wall of the vertical plate, the top of the lifting box is open, and the inner side center of the lifting box is provided with a lifting rod fixedly connected with the inner wall thereof,

[0014] The top surface of the lifting box is coplanar with the top surface of the vertical plate.

[0015] The top surface of the concrete is coplanar with the top surface of the vertical plate, and the top four corners of the concrete are provided with notches matched with the lifting boxes.

[0016] The suspending rod is used for hoisting the device, the hoisting box and the suspending rod are arranged in advance on the vertical plate, the upper surface is flush with the plate surface after the concrete is poured, and the surface of the trestle can be ensured to be flat.

[0017] The utility model discloses the beneficial effects are:

[0018] 1. The force of the plugging device is the force form of simply supported plate, the middle of span of simply supported plate is large in force, and the edge support is small in force, the variable cross-section composite plate is large in cross-section height in the middle of span area, and is small in cross-section height at the edge support, conforms to the bearing mode of simply supported plate, and can effectively improve the bearing capacity of simply supported plate;2. The cross-section height of simply supported plate is small at the edge support, and the size of the slot of the hole support beam is small, which can well avoid the weakening of the bearing capacity of the support beam;

[0019] 3. The composite plate composed of vertical plate, edge plate, inclined plate and center plate can be used as the lower force bar of the device and the pouring formwork of concrete;

[0020] 4. The hoisting box and the suspending rod can effectively realize the hoisting function of the device, the top surface is flush with the surface of the trestle, the traffic function of the trestle is guaranteed, the hoisting box and the suspending rod are arranged in advance on the vertical plate, and construction is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the front view of the utility model;

[0022] Figure 2 It is the three-dimensional structure schematic view of the utility model;

[0023] Figure 3 It is the first angle structure schematic view of the utility model in the split state;

[0024] Figure 4 It is the second angle structure schematic view of the utility model in the split state;

[0025] Figure 5 It is Figure 4 The A area enlarged schematic view.

[0026] 1, hole;2, composite plate;201, edge plate;202, vertical plate;203, center plate;

[0027] 204, inclined plate;3, bolt;4, steel mesh;401, horizontal steel bar;402, vertical steel bar;403, vertical bar;5, concrete;501, notch;6, hoisting box;7, suspending rod. DETAILED DESCRIPTION

[0028] In order to clearly illustrate the technical features of the scheme, the scheme will be described below through specific embodiments.

[0029] Referring to Figures 1 to 5The utility model relates to a kind of applied to the plugging device of foundation pit trestle portal, it is characterized by, including with the hole 1 of meander shape and the structure of the combined board 2 of bucket shape are connected with, combined board 2 inside evenly provided with several pegs 3, the upper side of combined board 2 is fixedly connected with the horizontally arranged reinforcing mesh 4, combined board 2 inside is poured with concrete 5, and the material of combined board 2 is steel plate.

[0030] Combined board 2 includes rectangular frame structure and the edge plate 201 of horizontal arrangement, the top of edge plate 201 is fixedly connected with the vertical plate 202 of vertical upward arrangement around four corners, the downside of edge plate 201 is provided with the center plate 203 of rectangular shape, the side length of center plate 203 is less than the side length of edge plate 201, the center point of center plate 203 and the center point of edge plate 201 are located on the same vertical line, the outer edge of each side of center plate 203 and the outer edge of the same side of edge plate 201 are fixedly connected with the inclined plate 204, and the adjacent two inclined plates 204 are closely attached and fixedly connected. The top of edge plate 201 and center plate 203 and inclined plate 204 is fixedly connected with several pegs 3 of vertical upward arrangement, the length of peg 3 is same, and the top surface of peg on edge plate 201 is located on the downside of the top surface of vertical plate 202. Guarantee that combined board 2 and concrete 5 are stressed together, so that peg 3 can be used as the lower force bar of device.

[0031] Vertical plate 202 is used as side mould, and edge plate 201, inclined plate 204 and center plate 203 are used as bottom mould, to form formwork together to pour internal concrete 5, and combined board 2 has the function of stress and concrete 5 formwork.

[0032] Reinforcing mesh 4 includes several mutually parallel and equidistantly arranged horizontal steels 401 and several mutually parallel and equidistantly arranged vertical steels 402, and horizontal steel 401 and vertical steel 402 are perpendicular and fixedly connected, and the two ends of horizontal steel 401 and vertical steel 402 are fixedly connected with vertical downward arranged vertical reinforcement 403, and the bottom end of vertical reinforcement 403 is fixedly connected with the top of edge plate 201 on the same side, and the top surface of reinforcing mesh 4 is located on the downside of the top surface of vertical plate 202 and the upside of the top surface of peg 3.

[0033] Reinforcing mesh 4 is used as the upper force bar of device. After pouring concrete 5, combined board 2, reinforcing mesh 4 and concrete 5 are stressed together, to form the stress system of device.

[0034] The upside of the four corners of edge plate 201 is provided with the hoisting box 6 fixedly connected with the inner wall of vertical plate 202, the top of hoisting box 6 is open, and the inside center of hoisting box 6 is provided with the hoisting rod 7 fixedly connected with the inner wall thereof, and the top surface of hoisting box 6 is coplanar with the top surface of vertical plate 202. Hoisting rod 7 is used for the hoisting of device, and hoisting box 6 and hoisting rod 7 are set in advance on vertical plate, and after concrete pouring is completed, upper surface is flush with plate surface, to ensure that trestle surface is smooth.

[0035] The top surface of the concrete 5 is coplanar with the top surface of the vertical plate 202, and the concrete 5 is provided with notches 501 at the top four corners for cooperating with the hoisting box 6.

[0036] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A plugging device applied to a foundation pit trestle opening, characterized in that, The utility model provides a kind of combined board (2) comprising with the hole (1) of U-shaped shape and the structure of bucket-shaped, the inside of the combined board (2) is evenly provided with several pegs (3), the upper side of the combined board (2) is fixedly connected with the horizontally arranged reinforcing mesh (4), and the inside of the combined board (2) is poured with concrete (5). The material of the combined board (2) is steel plate.

2. The plugging device for the foundation pit trestle opening according to claim 1, characterized in that, The combined board (2) includes rectangular frame structure and horizontally arranged edge plate (201), the top of the edge plate (201) is fixedly connected with vertical plate (202) arranged upwards around the four corners, the lower side of the edge plate (201) is provided with rectangular center plate (203), the side length of the center plate (203) is less than the side length of the edge plate (201), the center point of the center plate (203) and the center point of the edge plate (201) are located on the same vertical line, and the outer edge of each side of the center plate (203) and the outer edge of the same side of the edge plate (201) are fixedly connected with inclined plate (204), and the adjacent two inclined plates (204) are closely attached and fixedly connected.

3. The plugging device for the foundation pit trestle opening according to claim 2, characterized in that, The top of the edge plate (201), the center plate (203) and the inclined plate (204) is fixedly connected with several vertical pegs (3) arranged upwards, the length of the pegs (3) is the same, and the top surface of the pegs on the edge plate (201) is located below the top surface of the vertical plate (202).

4. The plugging device for the foundation pit trestle opening according to claim 3, characterized in that, The reinforcing mesh (4) includes several horizontal steel bars (401) and several vertical steel bars (402) arranged parallel and equidistantly, the horizontal steel bars (401) and the vertical steel bars (402) are perpendicular and fixedly connected, and the two ends of the horizontal steel bars (401) and the vertical steel bars (402) are fixedly connected with vertical studs (403) arranged downwards. The bottom end of the vertical stud (403) is fixedly connected with the top of the edge plate (201) on the same side, and the top surface of the reinforcing mesh (4) is located below the top surface of the vertical plate (202) and above the top surface of the peg (3).

5. The plugging device for the foundation pit trestle opening according to claim 4, characterized in that, The top of the edge plate (201) is provided with lifting box (6) fixedly connected with the inner wall of the vertical plate (202) at the four corners, the top of the lifting box (6) is open, and the inner wall of the lifting box (6) is fixedly connected with lifting rod (7) arranged in the center. The top surface of the lifting box (6) is coplanar with the top surface of the vertical plate (202).

6. The plugging device for the foundation pit trestle opening according to claim 5, characterized in that, The top surface of the concrete (5) is coplanar with the top surface of the vertical plate (202), and the top of the concrete (5) is provided with notch (501) matched with the lifting box (6) at the four corners.

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