Steel sheet pile water retaining cofferdam structure

Abstract

The utility model discloses a steel sheet pile water retaining cofferdam structure, and belongs to the technical field of cofferdams. The surfaces of the multiple sets of steel pile bodies are sleeved with multiple sets of baffle bodies, sleeve piles are symmetrically arranged at the two ends of each baffle body, the outer side walls of the sleeve piles are sleeved with outer sleeve frames, outer sliding frames are arranged on the outer walls of the end faces of the outer sleeve frames, and geomembranes covering the outer sides of the baffle bodies are arranged on the outer side walls of the outer sleeve frames; the steel pile body is sequentially pre-embedded, the matched baffle body and the inner steel frame are installed step by step, the structural stability and accuracy are guaranteed, and the overall stability is enhanced through sleeving, limiting and locking of the inner steel frame; the outer sleeve frame and the baffle body are sleeved and matched to form a leakage-proof protection structure, water is prevented from entering along seams, erosive wear is reduced, and the service life is prolonged. The geomembrane is manually laid on the outer side wall of the baffle body and limited and fixed through accessories such as clamping strips, operation is convenient and rapid, and the geomembrane can be rapidly detached and replaced according to the service life and damage conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to cofferdam technical field especially relates to a steel sheet pile water retaining cofferdam structure. BACKGROUND

[0002] In the foundation construction of many water conservancy, bridge, port and building engineering, the working environment of water area or high groundwater level area is often faced, and the steel sheet pile cofferdam is the most commonly used sheet pile cofferdam, the steel sheet pile is a kind of section steel with locking, its section has straight plate shape, slot type and Z shape, etc., there are various sizes and interlocking forms;Commonly seen are Larson type, Lakwanana type and the like;Steel sheet pile water retaining cofferdam structure emerges as the times require, it has the advantages of high strength, good waterproof performance, convenient construction, reusable and the like, can effectively reduce the interference of construction to water area ecology and surrounding site, and can flexibly adjust its structure form and size according to different engineering scale and geological conditions, gradually becomes an important temporary water retaining support structure solution in modern engineering construction, to meet the increasingly complex engineering construction needs and ensure the smooth development and quality guarantee of engineering

[0003] In combination with the above content, it needs to be explained that: the Chinese patent with publication number CN221645831U discloses a steel sheet pile cofferdam, which can effectively play a water retaining role by laying a layer of geomembrane on the water-facing surface of the cofferdam, solves the water leakage problem caused by the tight occlusion between steel sheet piles, wherein, under the influence of the erosion of external water tide of the cofferdam, water flow impurities contact, and the quality and service life of the geomembrane itself, the geomembrane of the cofferdam may be damaged in advance or the waterproof efficiency is not up to standard during long-term use, resulting in general waterproof permeation effect of the cofferdam.

[0004] In view of the above technical defects, a solution is proposed. INVENTION CONTENTS

[0005] The utility model aims at providing a steel sheet pile water retaining cofferdam structure to solve the problems.

[0006] The utility model can realize the purpose by the following technical scheme: a steel sheet pile water retaining cofferdam structure, including multiple groups of steel pile main parts, multiple groups of baffle main parts are sleeved on the surface of the steel pile main part, the both ends of the baffle main part are symmetrically provided with sleeve piles, the outer lateral wall of the sleeve pile is sleeved with an outer sleeve frame, the outer lateral wall of the outer sleeve frame is provided with an outer sliding frame, and the outer lateral wall of the outer sleeve frame is provided with a geomembrane covering the outer side of the baffle main part;The inner lateral wall of the baffle main part is provided with a sleeve jointed inner steel frame, and the bottom of the inner steel frame is provided with a plug-in frame extending in the axial direction of the steel pile main part.

[0007] Preferably, rectangular limit grooves are recessed on the outer walls of the both ends of the steel pile main part, and the steel pile main part is embedded in the cofferdam foundation.

[0008] Preferably, the baffle body has a U-shaped structure design, the inner wall of the sleeve is recessed to form an inner cavity, the top of the inner cavity is provided with a side opening penetrating both ends, and the middle of the outer wall of the sleeve is recessed to form an outer groove.

[0009] Preferably, an inner sleeve is provided on the inner side wall of the outer frame, and a retaining strip is slidably sleeved on the outer wall of the outer slide, and a pressure groove for connecting with the geomembrane is provided on the outer wall of the retaining strip.

[0010] Preferably, the inner steel frame has a through hole at the top center, and the insert has a recessed slot at the end face that extends vertically.

[0011] The beneficial effects of this utility model are:

[0012] (1) This utility model ensures the stability and accuracy of the cofferdam structure by orderly pre-embedding the main body of the steel piles and maintaining their vertical arrangement and appropriate spacing, as well as by installing the baffle main body and the inner steel frame of the appropriate size in stages, thereby improving the overall strength of the cofferdam and reducing structural problems caused by improper installation; the two sets of inserts of the inner steel frame are slidably inserted into the inner cavity and connected with the column at the top of the side opening, thereby realizing the joint sleeve limit locking between the inner steel frame, multiple sets of baffle main bodies and steel pile main bodies, enhancing the integrity and stability of the cofferdam structure and preventing the loosening or deformation of the internal structure of the cofferdam.

[0013] (2) This utility model forms a leak-proof protection structure in the splicing area on the outside of multiple baffle bodies by fitting the outer frame with the outer wall of the baffle body. This effectively prevents water from entering the cofferdam along the seams, reduces the scouring and wear between the baffle bodies, and extends the service life of the cofferdam. The geomembrane is laid manually on the top outer wall of the baffle body and is limited and fixed by accessories such as clips. This is not only convenient and quick, but also allows for quick disassembly and replacement according to the service life and damage of the geomembrane, reducing maintenance costs and improving the sustainability of the cofferdam. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings;

[0015] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the baffle body of this utility model;

[0017] Figure 3 This is a top view of the internal cavity of this utility model.

[0018] Figure 4 This is a schematic diagram of the internal steel frame of this utility model;

[0019] Figure 5 is the structural diagram of the outer sleeve frame of the utility model;

[0020] Figure 6 is the three-dimensional structural diagram of the outer sleeve frame of the utility model;

[0021] Figure 7 is the structural diagram of the clamping strip of the utility model.

[0022] Legend: 1, steel pile body; 2, baffle body; 201, sleeve pile; 202, outer sleeve groove; 203, side through hole; 204, inner cavity; 3, geomembrane; 4, outer sleeve frame; 401, inner sleeve column; 402, outer sliding frame; 5, clamping strip; 6, inner steel frame; 601, adaptive perforation; 602, insertion frame. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Embodiment one: please refer to Figure 1 - Figure 7 The embodiment is a steel sheet pile water retaining cofferdam structure, which comprises a plurality of steel pile bodies 1, a plurality of baffle bodies 2 are sleeved on the surfaces of the steel pile bodies 1, sleeve piles 201 are symmetrically arranged at the two ends of the baffle bodies 2, outer sleeve frames 4 are sleeved on the outer side walls of the sleeve piles 201, outer sliding frames 402 are arranged on the end faces of the outer sleeve frames 4, and geomembranes 3 cover the outer sides of the baffle bodies 2 and are arranged on the outer side walls of the outer sleeve frames 4.

[0025] Rectangular limiting grooves are recessed on the outer walls of the two ends of the steel pile bodies 1, the steel pile bodies 1 are embedded into the cofferdam foundation, the baffle bodies 2 are designed in a concave shape, inner cavities 204 are recessed and arranged through the inner side walls of the sleeve piles 201, side through holes 203 are arranged through the two ends of the top of the inner cavities 204, and outer sleeve grooves 202 are recessed and arranged through the outer side walls of the sleeve piles 201.

[0026] According to the size of the cofferdam drawing, the steel pile bodies 1 are sequentially embedded into the foundation, the spacing between the two adjacent steel pile bodies 1 and the vertical arrangement of the steel pile bodies 1 are maintained, the baffle bodies 2 of the adaptive size are lifted, and the baffle bodies 2 are slowly lifted and placed from top to bottom. After the baffle bodies 2 are calibrated by the construction personnel, the inner cavities 204 at the bottom of the baffle bodies 2 are sleeved with the steel pile bodies 1, the inner side wall region of the inner cavities 204 is provided with an opening strip matched with the opening groove, the two are matched and slid, the baffle bodies 2 are gradually lowered and positioned in the region, and the baffle bodies 2 are sequentially embedded into the foundation.

[0027] The steel sheet pile water retaining cofferdam structure of the embodiment comprises an inner steel frame 6 arranged on the inner side wall of the baffle main body 2, and the bottom of the inner steel frame 6 is provided with an insertion frame 602 extending axially with the steel pile main body 1.

[0028] An adaptive through hole 601 is arranged through the top center of the inner steel frame 6, and an opening groove penetrating up and down is arranged on the end face of the insertion frame 602. After the adjacent baffle main bodies 2 are installed, the adaptive inner steel frame 6 is hoisted by hoisting equipment and transported to the upper side of the inner cavity 204, the bottom of the inner steel frame 6 is aligned and connected with the through hole 203 on the upper side of the inner cavity 204, the two groups of insertion frames 602 of the inner steel frame 6 are first inserted into the inner cavity 204, and the inner steel frame 6 is gradually lowered, so that the adaptive through hole 601 on the top of the inner steel frame 6 is connected with the column on the top of the through hole 203, the column is the residual part of the through hole 203 between the two groups of sleeve piles 201, and the column is inserted into the adaptive through hole 601, thereby forming a combined sleeve limiting and locking structure between the inner steel frame 6, the plurality of baffle main bodies 2 and the steel pile main body 1.

[0029] The inner sleeve pile 401 is arranged on the inner side wall of the outer sleeve frame 4, the clamping strip 5 is slidingly sleeved on the outer wall of the outer sliding frame 402, and the clamping strip 5 is provided with a pressing groove connected with the geomembrane 3. The outer sleeve frame 4 is hoisted by hoisting equipment to be close to the outer sleeve groove 202, the inner sleeve pile 201 on the inner wall of the outer sleeve frame 4 is connected with the outer sleeve groove 202 by the construction personnel, and the outer sleeve frame 4 is gradually lowered, so that the outer sleeve frame 4 is connected with the outer side wall of the baffle main body 2, and a leakage protection structure is formed in the outer side splicing area of the plurality of baffle main bodies 2. The bottom of the outer sleeve frame 4 slides along the surface of the baffle main body 2 and is inserted into the soil of the foundation, and the top position is above the water surface. The inner sleeve pile 201 and the outer sleeve groove 202 are accompanied by the shape trajectory, which greatly reduces the intrusion of the water outside the cofferdam along the seam and the erosion and wear of the baffle main body 2.

[0030] According to the use needs, the geomembrane 3 can be replaced regularly. The geomembrane 3 is first laid on the top of the outer side wall of the baffle main body 2 by manual laying, and is attached to the outer side wall of the baffle main body 2 by smoothing. The part of the geomembrane 3 close to the outer sliding frame 402 is arranged, and the adaptive clamping strip 5 is taken out. The clamping strip 5 can be composed of two groups of metal strips, and the top of the two groups of metal strips is provided with a detachable clamping block. Figure 7As shown, the clamping strip 5 can be sleeved on the outer slide 402, the smoothed geomembrane 3 is slid along the pressing groove between the two groups of metal strips, and then laid on the outer wall of the baffle body 2, and the geomembrane 3 is attached to the outer side of the baffle body 2 by the magnet and other accessories, and the specific accessories can be replaced according to actual needs, which can be engineering plastic fasteners and the like. After the geomembrane 3 is installed, the clamping block is sleeved on the top of the two groups of metal strips of the clamping strip 5, so that the geomembrane 3 is limited between the clamping strips 5, and the outer side of the baffle body 2 is covered and shielded, and the clamping buckle and accessories can be quickly disassembled according to the service life and damage degree of the geomembrane 3, which is used for quick replacement of the geomembrane 3.

[0031] In combination with Embodiment One and Embodiment Two, the cofferdam construction of the utility model has many advantages. The orderly pre-buried steel pile body 1 is matched with the baffle body 2 and the inner steel frame 6, which are installed step by step, to ensure the structural stability and accuracy, and the sleeving, limiting and locking of the inner steel frame 6 enhance the overall stability. The outer sleeve frame 4 is sleeved with the baffle body 2 to form a leak-proof protection structure, which prevents water from entering along the seam and reduces erosion and wear, thereby prolonging the service life. The geomembrane 3 is manually laid on the outer side wall of the baffle body 2 and is limited and fixed by the clamping strip 5 and other accessories, which is convenient and quick to operate and can be quickly disassembled and replaced according to the service life and damage condition, thereby reducing the maintenance cost and improving the sustainability of the cofferdam.

[0032] The above content is only an example and description of the structure of the present application, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the structure of the present application or exceed the scope defined by the present claims.

[0033] In the description of the present application, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and do not limit the present application to the specific embodiments. Obviously, many modifications and changes can be made according to the content of the present application. The present application selects and describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited by the claims and their entire scope and equivalents.

Claims

1. A steel sheet pile water retaining cofferdam structure comprising a plurality of sets of steel pile bodies (1), characterized in that, A plurality of baffle bodies (2) are sleeved on the surface of the steel pile body (1), both ends of the baffle body (2) are symmetrically provided with sleeve piles (201), an outer sleeve frame (4) is sleeved on the outer side wall of the sleeve pile (201), an outer sliding frame (402) is arranged on the end face outer wall of the outer sleeve frame (4), and a geomembrane (3) covering the outer side of the baffle body (2) is arranged on the outer side wall of the outer sleeve frame (4). An inner steel frame (6) is sleeved on the inner side wall of the baffle body (2), and the bottom of the inner steel frame (6) is provided with an insertion frame (602) extending axially with the steel pile body (1).

2. The steel sheet pile water retaining cofferdam structure according to claim 1, characterized by, Rectangular limiting grooves are recessed on the outer walls of both ends of the steel pile body (1), and the steel pile body (1) is embedded in the cofferdam foundation.

3. The steel sheet pile water retaining cofferdam structure according to claim 1, characterized by, The baffle body (2) is designed in a concave shape, the inner side wall of the sleeve pile (201) is recessed and provided with an inner cavity (204), the top of the inner cavity (204) is provided with a side through hole (203) penetrating both ends, and the outer side wall of the sleeve pile (201) is recessed and provided with an outer sleeve groove (202) penetrating the middle part.

4. The steel sheet pile water retaining cofferdam structure according to claim 1, wherein An inner sleeve pile (401) is arranged on the inner side wall of the outer sleeve frame (4), a clamping strip (5) is sleeved and slid on the outer wall of the outer sliding frame (402), and a pressing groove connected with the geomembrane (3) is arranged on the outer wall of the clamping strip (5).

5. The steel sheet pile water retaining cofferdam structure according to claim 1, wherein An adaptive through hole (601) is penetratingly arranged on the top center of the inner steel frame (6), and an opening groove penetrating up and down is recessed on the end face of the insertion frame (602).

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