A steel sheet pile support cofferdam for reinforcing existing river embankments of a river course

Abstract

The utility model relates to a steel sheet pile support cofferdam for reinforcing existing river embankment of river, including steel sheet pile, steel sheet pile is supported in river and is surrounded with existing river embankment and presents the rectangle of closed, the outer wall of steel sheet pile of each side is installed with steel encloses purlin, the inner wall of steel sheet pile of each side and the inner wall of angle of two adjacent sides steel sheet pile interval installation has a plurality of embedded steel wedge, and the end of embedded steel wedge is installed with steel pipe inclined support, and the steel pipe inclined support bottom inserts the bottom of river embankment, and the reinforced bank is constructed in the space surrounded by steel pipe inclined support and existing river embankment. The utility model introduces steel pipe inclined support system, and the overall stability of cofferdam is improved obviously through rigid triangle support structure, can effectively resist water load, and guarantees reinforcing construction safety, and the whole steel structure realizes 100% recyclable, and the waste pollution of traditional cofferdam removal is prevented, and the ecological water conservancy engineering requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy embankment reinforcement construction, and in particular to a steel sheet pile support cofferdam for reinforcing existing river embankments. Background Technology

[0002] In water conservancy and embankment engineering, especially in the field of riverbank reinforcement construction, cofferdams are crucial temporary water-retaining structures that ensure the safety of near-water operations and create a dry construction environment. Traditional riverbank reinforcement cofferdams, such as earth-rock cofferdams and bagged soil cofferdams, often have several shortcomings in application: First, their structural integrity and stability are relatively poor, and they are prone to leakage, piping, and landslides when the foundation bearing capacity is insufficient, which not only threatens construction safety but may also cause secondary damage to the riverbank itself that needs to be protected; second, traditional cofferdam construction is usually cumbersome and time-consuming, requiring a large amount of earth and rock filling and compaction, which is inefficient and occupies a lot of space; third, the materials used in such cofferdams are often difficult to fully recycle, which does not conform to the modern construction concept of green and environmentally friendly practices.

[0003] Therefore, for underwater reinforcement projects of existing river embankments, there is an urgent need for a cofferdam type that is structurally strong, easy and quick to construct, has good water-stopping effect, excellent stability, and is reusable, so as to effectively ensure construction safety, improve work efficiency, and reduce project risks and costs. This utility model proposes a steel sheet pile supported cofferdam with an optimized support structure specifically for river embankment reinforcement scenarios. Summary of the Invention

[0004] This utility model aims to address the shortcomings of existing technologies by providing a steel sheet pile-supported cofferdam for reinforcing existing river embankments.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a steel sheet pile support cofferdam for reinforcing existing river embankments, comprising steel sheet piles, which are installed in the river channel and enclose the existing river embankment to form a closed rectangle. A steel waler is installed on the outer wall of each side of the steel sheet pile, and a number of pre-embedded steel wedges are installed at intervals on the inner wall of each side of the steel sheet pile and at the angle between the inner walls of the adjacent two sides of the steel sheet pile. A steel pipe inclined support is installed obliquely at the end of the pre-embedded steel wedge, and the bottom of the steel pipe inclined support is inserted into the bottom of the river embankment. The reinforcement of the embankment is carried out within the space enclosed by the steel pipe inclined support and the existing river embankment.

[0006] Specifically, the steel walers on each side are double-layered I-beams and welded to the upper outer side of the sheet pile.

[0007] Specifically, the pre-embedded steel wedges are welded and fixed to the upper inner side of the steel sheet pile.

[0008] Specifically, the bottom of the steel pipe diagonal support should be inserted into the bottom of the river embankment to a depth of ≥2m.

[0009] The beneficial effects of this utility model are as follows: This utility model introduces a steel pipe inclined support system, which significantly improves the overall stability of the cofferdam through a rigid triangular support structure, effectively resisting water load and ensuring the safety of reinforcement construction; the all-steel structure achieves 100% recyclability, eliminating the pollution from waste generated during the demolition of traditional cofferdams, and meeting the requirements of ecological water conservancy projects; the modular support components support mechanized rapid installation and dismantling, shortening the construction period, reducing the risk of working near water, and significantly improving the overall project benefits. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the cross-sectional result of this utility model;

[0011] Figure 2 This is a top view of the present invention;

[0012] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0013] In the diagram: 1-Sheet pile; 2-Existing river embankment; 3-Steel waler; 4-Embedded steel wedges; 5-Steel pipe diagonal bracing; 6-Reinforced embankment;

[0014] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] like Figures 1-3 As shown, a steel sheet pile-supported cofferdam for reinforcing existing river embankments includes steel sheet piles 1. The steel sheet piles 1 are installed in the river channel and enclose the existing river embankment 2 to form a closed rectangle. Steel walers 3 are installed on the outer wall of each side of the steel sheet piles 1. Each side of the steel walers 3 is a double-layered I-beam and is welded to the upper outer side of the steel sheet piles 1 to ensure the integrity of the steel sheet pile-supported cofferdam.

[0017] Specifically, the continuous interlocking of the steel sheet piles 1 forms a closed retaining wall, which greatly improves the seepage prevention performance and can effectively reduce the risk of leakage compared with traditional earth and rock or bagged cofferdams. At the same time, the steel sheet piles 1 can be driven quickly and mechanically without the need for a large amount of earthwork filling, which can effectively shorten the construction period. The steel waler 3 is a prefabricated component, which is convenient to assemble on site. The steel sheet piles 1 can be reused repeatedly, with low long-term costs and no residual pollution after dismantling.

[0018] Several pre-embedded steel wedges 4 are installed at intervals on the inner wall of each sheet pile 1 and at the angle between the inner walls of adjacent sheet piles 1. The pre-embedded steel wedges 4 are welded and fixed to the upper inner side of the sheet pile 1. A steel pipe inclined support 5 is installed obliquely at the end of the pre-embedded steel wedge 4, and the bottom of the steel pipe inclined support 5 is inserted into the bottom of the river embankment. The bottom of the steel pipe inclined support 5 is inserted into the bottom of the river embankment to a depth of ≥2m. The reinforcement of the embankment 6 is carried out in the space enclosed by the steel pipe inclined support 5 and the existing river embankment 2.

[0019] Specifically, the steel pipe inclined support 5, together with the pre-embedded steel wedge block 4 and the steel sheet pile 1, forms a rigid triangular support system, which has a more reasonable stress distribution and can effectively resist water flow impact and hydrostatic pressure. The pre-embedded steel wedge block 4 and the steel pipe inclined support 5 are prefabricated components, which are convenient to assemble on site. By adjusting the inclination angle and spacing of the steel pipe inclined support 5, it can adapt to different river embankment heights and geological conditions. The steel structure cofferdam has better deformation resistance than traditional earth-rock and bag cofferdams. It is not easy to collapse during heavy rain or sudden changes in water level. At the same time, it can also avoid earth and rock excavation and waste disposal, reduce the impact on water turbidity, and meet the requirements of ecological water conservancy projects.

[0020] The construction of this utility model includes the following steps:

[0021] S1. Construct steel sheet piles 1 in the river channel, wherein steel wedges 4 are pre-embedded on the upper inner side of some of the steel sheet piles 1;

[0022] S2. When the river is at a low water level, weld the steel waler 3 to the upper part of the outer wall of the steel sheet pile 1 to ensure the integrity of the steel sheet pile support cofferdam.

[0023] S3. Insert one end of the steel pipe inclined support 5 into the bottom of the river embankment at an angle, at least 2m into the soil, and weld the other end to the pre-embedded steel wedge block 4 on the steel sheet pile 1 for fixation.

[0024] S4. Pump water inside the steel sheet pile-supported cofferdam. After the pumping is completed, reinforce the existing river embankment 2, i.e., reinforce the embankment 6.

[0025] S5. After the embankment reinforcement 6 is completed, remove the steel sheet piles 1, steel walers 3, pre-embedded steel wedges 4, and steel pipe diagonal supports 5.

[0026] This utility model introduces a steel pipe inclined support system, which significantly improves the overall stability of the cofferdam through a rigid triangular support structure. It can effectively resist water load and ensure the safety of reinforcement construction. The all-steel structure is 100% recyclable, eliminating the pollution caused by waste from the demolition of traditional cofferdams and meeting the requirements of ecological water conservancy projects. The modular support components support mechanized rapid installation and dismantling, shortening the construction period and reducing the risk of working near water, resulting in a significant improvement in overall project benefits.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A sheet pile-supported cofferdam for reinforcing existing riverbanks, characterized in that, The project includes steel sheet piles (1) which are installed in the river channel and enclosed by the existing river embankment (2) to form a closed rectangle. Steel walers (3) are installed on the outer wall of each side of the steel sheet pile (1). Several pre-embedded steel wedges (4) are installed at intervals at the inner wall of each side of the steel sheet pile (1) and at the angle between the inner walls of the adjacent two sides of the steel sheet pile (1). Steel pipe inclined supports (5) are installed obliquely at the ends of the pre-embedded steel wedges (4). The bottom of the steel pipe inclined supports (5) is inserted into the bottom of the river embankment. The reinforcement of the embankment (6) is carried out in the space enclosed by the steel pipe inclined supports (5) and the existing river embankment (2).

2. A sheet pile-supported cofferdam for reinforcing existing riverbanks according to claim 1, characterized in that, The steel walers (3) on each side are double-layered I-beams and are welded to the upper part of the outer side of the sheet pile (1).

3. A sheet pile-supported cofferdam for reinforcing existing riverbanks according to claim 1, characterized in that, The pre-embedded steel wedge (4) is welded and fixed to the upper inner side of the steel sheet pile (1).

4. A sheet pile-supported cofferdam for reinforcing existing riverbanks according to claim 1, characterized in that, The bottom of the steel pipe diagonal support (5) is inserted into the bottom of the river embankment to a depth of ≥2m.

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