CN219621804U - Multifunctional temporary cofferdam - Google Patents

Abstract

The utility model discloses a multifunctional temporary cofferdam, which comprises a concrete box body (10), a gate (2) and steel pipes (9), wherein the gate (2) is arranged on two symmetrical sides of the concrete box body (10), and the steel pipes (9) penetrate through the concrete box body (10) from bottom to top, wherein: two sides of the concrete box body (10) are provided with steel structure additional box bodies (8), rubber bodies (7) are arranged at the joints between the adjacent steel structure additional box bodies (8), and a plurality of concrete box bodies (10) are connected through the steel pipes (9) to form a whole for constructing a closed water-proof area; and a grid (1) is arranged on the upstream side of the concrete box body (10). The temporary cofferdam has simple construction mode and wide application, and saves the overall construction cost of engineering.

Description

Multifunctional temporary cofferdam

Technical Field

The utility model belongs to the technical field of cofferdam construction, and particularly relates to a multifunctional temporary cofferdam.

Background

Cofferdam is a barrier that serves as an interception during construction periods. Due to the great development of industries such as petroleum production, steel smelting and the like, a large number of artificial channels are required to be constructed in a production factory, and cooling water is provided for industrial production. The conventional construction mode of the artificial canal is that an earth cofferdam is constructed at the entrance of the canal, artificial precipitation is carried out on the area of the canal at the rear, excavation operation is carried out in a dry environment after the underground water level is lower than the elevation of the bottom of the canal, a small gap is dug on the earth cofferdam after the canal is constructed, irrigation is carried out on the canal at the rear, and after the water levels at the inner side and the outer side of the cofferdam are consistent, all temporary earth cofferdams are excavated. When the channel enters the operation period, a floating type trash blocking screen is arranged at the inlet of the channel to prevent floating trash in the open sea from entering an artificial canal and affecting normal industrial water, so that a temporary cofferdam is required to serve as a barrier effect in engineering, and the floating trash blocking screen is widely applied to the construction field, the hydraulic engineering field, the engineering construction field and the like.

Some designs of temporary cofferdams in the prior art are made. For example, CN107574829B discloses a floating temporary cofferdam and a rapid dike construction method thereof, which forms an L-shaped fence by combining a floating breakwater with an anti-reflux weir, and when in use, the fence can be directly combined with a hydraulic filling boundary to form a hydraulic filling area, and a hydraulic filling pipe is utilized to fill the hydraulic filling area.

However, further research, the prior art still suffers from the following drawbacks or deficiencies: (1) The conventional cofferdam hydraulic filling method has the defects of extremely large engineering quantity of earth and stone sides required by land making and higher cost; (2) The floating temporary cofferdam can only be used in the construction period, the service time is short, and environmental protection is not facilitated; (3) The action height of the floating temporary cofferdam can be only within a certain range, and cannot be widely used in the engineering field.

Disclosure of Invention

Aiming at the defects or improvement demands of the prior art, the utility model provides the multifunctional temporary cofferdam, which is formed into a whole by a steel pipe penetrating through a concrete box body during temporary cofferdam, and the box bodies are tightly connected, so that water stopping can be well carried out; when the filter screen is used, the two gates of each concrete box body are all opened, the front grid acts as the filter screen, and impurities floating on water and suspended in water are filtered, so that the filter screen can be widely used in the field of engineering construction.

In order to achieve the above-mentioned purpose, a multi-functional interim cofferdam, a serial communication port, including concrete box, gate and steel pipe, the gate is located concrete box symmetry both sides, the steel pipe is from down to up passed the concrete box, wherein: two sides of the concrete box body are provided with additional box bodies with steel structures, rubber bodies are arranged at the joints between the adjacent additional box bodies with the steel structures, and a plurality of additional box bodies with the concrete box bodies are connected through the steel pipes to form a whole for constructing a closed water-proof area; the concrete box upstream side sets up the grid, the external flexible connection area that is used for intercepting greasy dirt of grid.

Further, a supporting beam is arranged in the concrete box body.

Further, a cover plate is arranged at the top of the concrete box body.

Further, one side of the top of the concrete box body is provided with an air valve.

Further, the air valve is provided with an air pipe which extends to the water surface.

Further, when the air valve needs to ventilate the concrete box body, an air pipe is arranged on the air valve and extends to the water surface.

Further, the flexible connecting belt is made of waterproof rubber materials.

In general, the above technical solutions conceived by the present utility model, compared with the prior art, enable the following beneficial effects to be obtained:

(1) According to the utility model, when the temporary cofferdam is formed into a whole body through the steel pipe and the concrete box body, the box bodies are tightly connected, and the whole temporary cofferdam can well stop water; when the filter screen is used, the two gates of each concrete box body are all opened, the front grid acts as the filter screen, the full water section can be filtered by garbage and sundries, and the oil screen can be formed by connecting the flexible connecting belt, so that the filter screen can be widely used in the field of engineering construction.

(2) One of the main structures built by the utility model is a hollow concrete box body, so that the material consumption is low, the dead weight of the multifunctional temporary cofferdam is reduced, the material cost of construction is saved, and the construction is more convenient and quicker.

(3) The utility model only needs to connect the box body with the steel pipe during construction, the construction operation of the assembled structure is simple and quick, and the labor and time cost of construction are saved.

Drawings

FIG. 1 is a diagram showing the overall structure of a box connection according to an embodiment of the present utility model;

FIG. 2 is a plan view of a box structure according to an embodiment of the present utility model;

FIG. 3 is a side view of a box structure according to an embodiment of the present utility model;

FIG. 4 is an overall construction diagram of a temporary cofferdam in an embodiment of the present utility model;

FIG. 5 is a view showing a construction of a concrete case according to an embodiment of the present utility model when a flexible connection strap is provided;

fig. 6 is a flowchart of a construction method of the multifunctional temporary fence according to an embodiment of the present utility model.

Like reference numerals denote like technical features throughout the drawings, in particular: 1-grid, 2-gate, 3-supporting beam, 4-air valve, 5-water valve, 6-cover plate, 7-compression rubber body, 8-steel structure additional box body, 9-steel pipe, 10-concrete box body, 11-flexible connecting band.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. In addition, the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1, the embodiment of the utility model provides a multifunctional temporary cofferdam, the main structure of the temporary cofferdam is a concrete box body 10 and a steel pipe 9 penetrating through the main structure, wherein the concrete box body 10 is of a hollow structure, and the concrete box bodies 10 are connected by the steel pipe 9. The steel pipe 9 passes through all the concrete boxes 10 from bottom to top to form a closed box body penetrated by the steel pipe and connected into a whole structure. When the temporary cofferdam is formed into a whole through the steel pipe 9 and the concrete box body 10, the box bodies are tightly connected, and water can be well stopped; when the filter screen is used, the two gates 2 of each concrete box body 10 are all opened, the upstream side grating 1 serves as the filter screen, and the full water section is used for filtering garbage and sundries, so that the filter screen can be widely used in the field of engineering construction.

As shown in fig. 2 to 3, the concrete box 10 maintains an overall structure by using the supporting beam 3 and the cover plate 6, and the supporting beam 3 is welded at the middle position of the concrete box 10 to bear bending moment and shearing force of external force; the cover plate 6 covers the top of the whole concrete box body, and the cover plate 6 is used for sealing the concrete box body 10.

The upstream water-facing surface wall of the box body 10 is the combination of the grating 1 and the gate 2, the downstream water-facing surface wall is also provided with the gate 2, the gate 2 is fully opened when the temporary cofferdam plays a role of a filter screen, enough water inflow can be ensured, water flow can not be blocked, the grating 1 serves as the filter screen, and the full water section is filtered by garbage sundries. The gate 2 is in a closed state when functioning as an oil blocking screen, the inside of the concrete box 10 is closed, the concrete box 10 is dismantled to a layer to form a floating body, the floating body moves along with the fluctuation of the water level and self-adaptively rises or falls, the floating body floats on the water surface, and the water body polluted by oil leakage of a large-scale marine vessel on the water is prevented from entering an artificial canal to intercept oil stains of the open sea.

The concrete box 10 is a closed box consisting of an inner surface and an outer surface, and the top plate surface and the bottom plate surface are respectively provided with an opening for sleeving the steel pipe 9.

The top of the concrete side wall body is provided with an air valve 4, the bottom of the concrete side wall body is provided with a water valve 5, and the air valve 4 respectively controls the circulation of air and the flow of water flow at the water valve 5. When the concrete box body 10 needs to be irrigated and submerged, the water valve 5 and the air valve 4 are simultaneously opened for irrigation. The water pump is installed at the rear of water valve 5, when interim cofferdam needs to be demolishd, utilizes the water pump to take away the water in the concrete box 10, simultaneously, connects a breather pipe to the surface of water on the pneumatic valve 4, has reduced the box dead weight, and the dead weight is less than buoyancy, and the box comes up to float, lets the concrete box 10 aerify come up, comes up to constructor convenient position to demolish.

As shown in fig. 4, the concrete tank 10 is provided with additional steel-structure tanks 8 on both sides when being used as temporary cofferdams, and rubber bodies 7 are integrated at two corners. The rubber body 7 is internally provided with an electromagnet, and the rubber body 7 can expand or compress under the action of an electromagnetic field. When the rubber body 7 is in the initial stage of temporary cofferdam construction, the electromagnet is in an electrified state, and the electromagnet generates a magnetic field, so that the rubber body 7 is tensioned, the volume of the rubber body 7 is compressed, the rubber body 7 is attached to the steel structure additional box body 8, and the surface of the rubber body 7 is consistent with the outer surface of the steel structure additional box body 8. After the temporary cofferdam is built, the electromagnet circuit on the rubber body 7 is disconnected, the compressed state is restored to the normal state, the volume of the rubber body 7 is changed from small to large, namely, the rubber body is expanded outwards, in the expansion process, the two rubber bodies 7 on the contact surfaces of the two box bodies are mutually extruded, water stopping can be well carried out, and the box bodies of the concrete box body 10 are tightly connected.

As shown in fig. 5, the flexible connection belt 11 is made of waterproof rubber, and the flexible connection can allow vertical relative movement between adjacent concrete boxes, so that irregular wave action in water can be well adapted. The flexible connecting belt 11 is arranged on two sides of the concrete box body 10 when the multifunctional temporary cofferdam is used as an oil blocking screen, at the moment, the concrete box body 10 only has one layer and moves along with the fluctuation of the water level, the flexible connecting belt self-adaptively rises or falls and floats on the water surface, the flexible connecting belt 11 and the concrete box body 10 are combined to form an oil blocking screen structure, and the polluted water body due to oil leakage of a large-scale marine vessel on the water enters an artificial canal to intercept the oil pollution of the open sea.

As shown in fig. 6, the utility model further provides a construction method of the multifunctional temporary cofferdam, which comprises the following steps:

in the construction of the temporary cofferdam, it is necessary to first determine the position of the steel pipe and to first pile the steel pipe 9 where it is to be placed at the position to be installed.

Step S200: the concrete box 10 is floated above the driven pile, and after being in place, the water valve 5 at the bottom and the air valve 4 at the top are opened to fill the concrete box 10.

Step S300: the concrete box body 10 is poured into water for sinking, and a hole which is reserved in the concrete box body 10 and matched with the steel pipe 9 in size is just sleeved on the outer side of the pile in which the steel pipe 9 is arranged.

Step S400: at this time, the first layer of concrete box 10 is installed in place, and the other steel pipe 9 is inserted downward into the reserved hollow area inside the concrete box 10 to be connected with the first section of steel pipe 9.

Step S500: the first layer of box body 10 is firmly fixed by the piles of the steel pipes 9 added on the first layer. The concrete tank 10 is restrained by the steel pipe without displacement in the vertical and horizontal directions.

Step 600: the above method is repeated to complete the placement of the multi-layered concrete tank 10. At this point a complete temporary cofferdam is formed.

It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the utility model and is not intended to limit the utility model, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims (7)

1. The utility model provides a multi-functional interim cofferdam, its characterized in that includes concrete box (10), gate (2), steel pipe (9) and flexonics area (11), gate (2) are located concrete box (10) symmetry both sides, steel pipe (9) are passed from bottom to top concrete box (10), wherein:

two sides of the concrete box body (10) are provided with steel structure additional box bodies (8), rubber bodies (7) are arranged at the joints between the adjacent steel structure additional box bodies (8), and a plurality of concrete box bodies (10) are connected through the steel pipes (9) to form a whole for constructing a closed water-proof area;

and a grid (1) is arranged on the upstream side of the concrete box body (10).

2. A multifunctional temporary cofferdam as claimed in claim 1, characterized in that said concrete tank (10) is internally provided with a supporting beam (3).

3. A multifunctional temporary cofferdam as claimed in claim 2, wherein the top of said concrete casing (10) is provided with a cover plate (6).

4. A multifunctional temporary cofferdam as claimed in claim 3, wherein the top side of said concrete casing (10) is provided with an air valve (4).

5. A multifunctional temporary cofferdam according to claim 4, characterized in that said air valve (4) is provided with a vent pipe when it is necessary to vent air into the concrete tank (10) and extends to the water surface.

6. A multifunctional temporary cofferdam according to any one of claims 1-5, characterized in that the bottom of the concrete tank (10) is provided with a water valve (5).

7. A multifunctional temporary cofferdam according to claim 1, characterized in that said flexible connecting strip (11) is made of a water-impermeable rubber material.