CN215715429U - Pier construction cofferdam structure - Google Patents

Abstract

The utility model discloses a cofferdam structure for pier construction, which comprises a plurality of straight plates and bent plates, wherein one ends of the straight plates and the bent plates are respectively provided with a sliding groove, the other ends of the straight plates and the bent plates are respectively fixed with a sliding block, the sliding grooves are in sliding fit with the sliding blocks, the outer sides of the two ends of the straight plates and the bent plates are respectively fixed with an L-shaped convex block, two adjacent L-shaped convex blocks form a T-shaped convex block, the T-shaped convex block is detachably connected with a T-shaped buckle, and the T-shaped buckle is fixedly connected with a buffer layer. The cofferdam can select one or more straight plates as the side length of the cofferdam according to the construction requirement, the bent plates are placed at the corners and are enclosed end to form the cofferdams with different sizes, the cofferdam can adapt to different construction requirements, the perimeter of the cofferdam enclosure can be large or small, and the shape and the size can be changed at will according to the size of a pier.

Description

Pier construction cofferdam structure

Technical Field

The utility model relates to the technical field of civil engineering, in particular to a cofferdam structure for pier construction.

Background

The cofferdam is a temporary enclosure structure constructed for constructing permanent water conservancy facilities in the water conservancy project construction. In the bridge foundation construction, when bridge piers and platform foundations are positioned below the ground surface water level, earth weirs in various forms are built according to local materials; in rivers with deep water and large flow velocity, a wooden sheet pile or a steel sheet pile (single-layer or double-layer) cofferdam can be adopted. The cofferdam can be used for preventing water and enclosing water and can also be used for supporting the pit wall of the foundation pit.

The common deepwater foundation cofferdams mainly comprise a steel sheet pile cofferdam, a lock catch steel pipe pile cofferdam, a double-wall steel cofferdam and the like. The steel sheet pile cofferdam is the most commonly used one, having: the strength is high, and the soil can be easily driven into a hard soil layer; the construction can be carried out in deep water, and an inclined support is added to form a surrounding cage if necessary. The waterproof performance is good; the cofferdam with various shapes can be formed according to the requirement and can be repeatedly used, so that the cofferdam has wide application.

In the prior art, the cofferdam is mainly formed by splicing U-shaped steel sheet piles, the U-shaped steel sheet piles are connected left and right to form the cofferdam, but the steel sheet piles are poor in sealing connection performance, and the joints of the steel sheet piles are mainly sealed and blocked by sand and stone to play a role in sealing and leakage prevention.

In addition, in order to deal with the river water pressure and the water flow impact situation around the pier, the U-shaped steel sheet piles need to be provided with supporting devices inside the cofferdam enclosed by the U-shaped steel sheet piles, an upper layer, a middle layer and a lower layer of supporting devices are generally needed to be arranged, and the excessive supporting devices enable the construction space inside the cofferdam to be compressed very little, are not beneficial to construction and are not convenient to install.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a cofferdam structure for pier construction, which solves the problems in the prior art, enables adjacent straight plates and bent plates to be connected more firmly and tightly, and improves the waterproof sealing performance of the cofferdam while fixing a buffer layer.

In order to achieve the purpose, the utility model provides the following scheme: the utility model provides a cofferdam structure for pier construction, which comprises a plurality of straight plates and bent plates, wherein one ends of the straight plates and the bent plates are respectively provided with a sliding groove, the other ends of the straight plates and the bent plates are respectively fixed with a sliding block, the sliding grooves are in sliding fit with the sliding blocks, the outer sides of two ends of each of the straight plates and the bent plates are respectively fixed with an L-shaped convex block, two adjacent L-shaped convex blocks form a T-shaped convex block, the T-shaped convex blocks are detachably connected with T-shaped buckles, and the T-shaped buckles are fixedly connected with buffer layers.

Preferably, a trapezoidal sliding block is fixed at one end of the buffer layer, a trapezoidal sliding groove is formed in the other end of the buffer layer, and the trapezoidal sliding block is in sliding fit with the trapezoidal sliding groove.

Preferably, the buffer layer is a flexible anti-scouring layer.

Preferably, a rubber layer is laid at one end of the straight plate and the bent plate, wherein the end of the straight plate and the end of the bent plate are provided with the sliding grooves.

Preferably, the bottom ends of the straight plate and the bent plate are fixed with inserting pieces.

Preferably, a stiffening rib is detachably connected between two adjacent straight plates.

The utility model discloses the following technical effects: according to the cofferdam, one or more straight plates can be selected as the side length of the cofferdam according to construction requirements, the bent plates are placed at the corners and are enclosed end to form the cofferdams with different sizes, the cofferdam can meet different construction requirements, the perimeter of the cofferdam enclosure can be large or small, and the shape and the size can be changed at will according to the size of a pier.

When the cofferdam is spliced, the adjacent straight plates and the adjacent bent plates or the sliding chutes and the sliding blocks of the straight plates are spliced together to form the inner layer of the rectangular cofferdam, the T-shaped buckles are arranged on the T-shaped lugs formed by the adjacent two L-shaped lugs, and the sliding chutes and the sliding blocks are spliced and combined with the T-shaped lugs and the T-shaped buckles to be clamped, so that the adjacent straight plates and the adjacent bent plates are connected more firmly and tightly, and the waterproof sealing performance of the cofferdam is improved while the buffer layer is fixed.

According to the cofferdam, the buffer layer is arranged to prevent the cofferdam from being damaged due to water flow scouring, and the service life of the cofferdam is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic structural view of a pier construction cofferdam structure;

FIG. 2 is a schematic structural view of a straight plate;

FIG. 3 is a bottom view of a straight plate;

FIG. 4 is a schematic structural view of a flexural plate;

FIG. 5 is a schematic structural diagram of a buffer layer;

in the figure: the device comprises a straight plate 1, a bent plate 2, a sliding groove 3, a sliding block 4, an L-shaped convex block 5, a T-shaped buckle 6, a buffer layer 7, a trapezoidal sliding block 8, a trapezoidal sliding groove 9, a rubber layer 10, an inserting piece 11 and a stiffening rib 12.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

The utility model provides a cofferdam structure for pier construction, which comprises a plurality of straight plates 1 and bent plates 2, wherein one ends of the straight plates 1 and the bent plates 2 are respectively provided with a sliding chute 3, the other ends of the straight plates 1 and the bent plates 2 are respectively fixed with a sliding block 4, the sliding chutes 3 are in sliding fit with the sliding blocks 4, the outer sides of the two ends of the straight plates 1 and the bent plates 2 are respectively fixed with an L-shaped lug 5, two adjacent L-shaped lugs 5 form a T-shaped lug, the T-shaped lug is detachably connected with a T-shaped buckle 6, and the T-shaped buckle 6 is fixedly connected with a buffer layer 7.

During the use, can select one or polylith straight plate 1 as the length of side of cofferdam according to the construction needs, place bent plate 2 in the corner, end to end encloses the cofferdam of synthetic not unidimensional. During the concatenation earlier with adjacent straight plate 1 and bent plate 2 or straight plate 1's spout 3 and slider 4 concatenation together, constitute the inlayer of rectangle cofferdam, install T type buckle 6 adjacent two on L type lug 5 constitutes T type lug, spout 3 and slider 4 concatenation combine T type lug and T type buckle 6 joint for adjacent straight plate 1 and bent plate 2 are connected more firmly, inseparable, have improved the waterproof sealing nature of cofferdam in fixed buffer layer 7.

Further optimization scheme, for the convenience of installation, dismantlement buffer layer 7, buffer layer 7 one end is fixed with trapezoidal slider 8, trapezoidal spout 9 has been seted up to the buffer layer 7 other end, trapezoidal slider 8 with trapezoidal spout 9 sliding fit.

Further optimize the scheme, in order to make buffer layer 7 laminate straight board 1 and bent plate 2 more, buffer layer 7 is flexible scour protection layer, buffer layer 7 angle of buckling is 0-90 degrees.

In order to further optimize the scheme, in order to prevent the water leakage at the joint of the straight plate 1 and the bent plate 2, a rubber layer 10 is laid at one end of the straight plate 1 and the bent plate 2, which is provided with the sliding groove 3, and when the sliding groove 3 is embedded into the sliding block 4, the rubber layer 10 plays a role in sealing.

In order to enable the bottom ends of the straight plate 1 and the bent plate 2 to be inserted into the riverbed, the inserting pieces 11 are fixed at the bottom ends of the straight plate 1 and the bent plate 2, and the cofferdam is fixed at the bottom of the water.

Further optimize the scheme, adjacent two can dismantle between the straight board 1 and be connected with stiffening rib 12, the stability of the cofferdam of further improvement, the guide rail can be laid to the space between stiffening rib 12 and the bent plate 2 simultaneously, conveniently sinks the cofferdam to the bottom, and stiffening rib 12 is located the corner position simultaneously, and occupation space is little, has increased inside construction space, convenient construction.

According to the further optimization scheme, the top ends of the straight plates 1 and the bent plates 2 are provided with slots, the bottom ends of the straight plates 1 and the bent plates 2 are fixedly provided with inserting blocks, the slots are detachably connected with the inserting blocks, and under the condition that the height of one layer of the straight plates 1 and the height of one layer of the bent plates 2 cannot meet the use requirement, multiple layers of cofferdams can be inserted at the top of the first layer until the use requirement is met.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims (6)

1. The utility model provides a pier construction cofferdam structure which characterized in that: including a plurality of straight plates (1) and bent plate (2), spout (3) have all been seted up to straight plate (1) and bent plate (2) one end, straight plate (1) and bent plate (2) other end all are fixed with slider (4), spout (3) and slider (4) sliding fit, straight plate (1) and bent plate (2) both ends outside all is fixed with L type lug (5), adjacent two T type lug is constituteed in L type lug (5), T type lug can be dismantled and is connected with T type buckle (6), T type buckle (6) fixedly connected with buffer layer (7).

2. The pier construction cofferdam structure of claim 1, wherein: buffer layer (7) one end is fixed with trapezoidal slider (8), trapezoidal spout (9) have been seted up to the buffer layer (7) other end, trapezoidal slider (8) with trapezoidal spout (9) sliding fit.

3. The pier construction cofferdam structure of claim 1, wherein: the buffer layer (7) is a flexible anti-scouring layer.

4. The pier construction cofferdam structure of claim 1, wherein: a rubber layer (10) is laid at one end of the straight plate (1) and the bent plate (2) with the sliding groove (3).

5. The pier construction cofferdam structure of claim 1, wherein: the bottom ends of the straight plate (1) and the bent plate (2) are fixed with inserting pieces (11).

6. The pier construction cofferdam structure of claim 1, wherein: stiffening ribs (12) are detachably connected between every two adjacent straight plates (1).

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