A boot-shaped cross-section double-walled steel cofferdam

Abstract

This application relates to a boot-shaped double-walled steel cofferdam, comprising multiple spliced ​​segments assembled to form the double-walled steel cofferdam. Each spliced ​​segment includes an outer wall plate, an inner wall plate, several partition plates, an enlarged foundation, and an anchoring assembly. The inner wall plate is spaced apart from the outer wall plate. Several partition plates are spaced apart between the outer and inner wall plates, with both ends of each partition plate connected to the outer and inner wall plates, respectively. The enlarged foundation is located within the space enclosed by the partition plates, outer wall plate, and inner wall plate, giving the spliced ​​segment a boot-shaped cross-section. One end of the anchoring assembly is connected between the outer and inner wall plates, and the other end passes through the enlarged foundation and is used to anchor to the riverbed. This application can solve the shortcomings of cofferdams in related technologies, such as complex structure and large material consumption.

Description

Technical Field

[0001] This application relates to the field of bridge construction technology, and in particular to a boot-shaped double-walled steel cofferdam. Background Technology

[0002] Currently, cofferdam structures are generally used as water-blocking measures in the construction of various bridge deep-water foundation projects. Under normal circumstances, steel sheet pile cofferdams, steel pipe pile cofferdams, and double-walled steel cofferdams are selected according to different hydrogeological conditions.

[0003] Generally, conventional cofferdams require multi-layered support systems due to the significant water pressure they must withstand. However, the complex arrangement of bored piles for bridge foundations makes the internal support layout within the cofferdam challenging. Furthermore, when the bridge foundation location is situated in areas with favorable geological conditions such as bedrock, conventional cofferdams present drawbacks including high construction difficulty, complex structure, and large material consumption. Summary of the Invention

[0004] This application provides a boot-shaped cross-section double-walled steel cofferdam to address the shortcomings of cofferdams in related technologies, such as complex structure and large material consumption.

[0005] This application provides a boot-shaped cross-section double-walled steel cofferdam, which includes multiple spliced ​​segments, and the multiple spliced ​​segments are spliced ​​together to form the double-walled steel cofferdam;

[0006] The splicing segments include:

[0007] Exterior wall panels;

[0008] Inner wall panels, which are arranged at intervals from the outer wall panels;

[0009] A plurality of partition plates are spaced apart between the outer wall panel and the inner wall panel, each partition plate having its two ends connected to the outer wall panel and the inner wall panel, respectively; and,

[0010] The foundation is enlarged and located within the space enclosed by the partition plate, outer wall plate and inner wall plate, and the cross-section of the splicing segment is boot-shaped.

[0011] An anchoring assembly, one end of which is connected between the outer wall panel and the inner wall panel, and the other end passes through the enlarged foundation and is used to anchor to the riverbed surface.

[0012] In some embodiments, the inner wall panel includes an upper inner wall panel and a lower inner wall panel arranged vertically, and the distance from the lower inner wall panel to the outer wall panel is greater than the distance from the upper inner wall panel to the outer wall panel.

[0013] The enlarged foundation is located between the outer wall panel and the inner lower wall panel, and the bottom of the inner upper wall panel is located within the enlarged foundation.

[0014] In some embodiments, the enlarged foundation is further provided with a bottom truss, the two ends of which are connected to the outer wall panel and the inner wall panel, respectively.

[0015] In some embodiments, the anchoring assembly includes an anchor beam, an anchor cable, and a guide tube. The guide tube passes through the enlarged foundation, the anchor beam is located above the enlarged foundation, and its two ends are respectively connected to the outer wall panel and the inner wall panel. One end of the anchor cable is connected to the anchor beam, and the other end passes through the guide tube out of the enlarged foundation.

[0016] In some embodiments, the guide tube is fixed to the outer wall panel or the inner wall panel by a limiting member.

[0017] In some embodiments, two adjacent splicing segments are connected by a steel locking joint.

[0018] In some embodiments, the steel lock jaw includes:

[0019] Multiple limiting plates are welded to the partition plates of two adjacent splicing segments to form a limiting space;

[0020] The steel section is inserted into the limiting space.

[0021] In some embodiments, the enlarged foundation is made of cast concrete.

[0022] In some embodiments, the upper part of the partition plate has openings.

[0023] In some embodiments, a plurality of connecting systems are provided between the outer wall panel and the inner wall panel.

[0024] The beneficial effects of the technical solution provided in this application include:

[0025] The double-walled steel cofferdam provided in this application adopts a boot shape and is filled with an enlarged foundation. It fully combines the structural characteristics of the double-walled steel cofferdam and the retaining wall, making full use of the cofferdam's own strength, rigidity and stability. It eliminates the conventional complex internal support structure, reduces the amount of material used, and is simpler and more convenient to construct than conventional cofferdams. It can also be reused. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of a double-walled steel cofferdam provided in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the cross-section of a double-walled steel cofferdam provided in an embodiment of this application;

[0029] Figure 3 A schematic diagram showing the arrangement of the outer wall panel, inner wall panel, partition plate, and bottom truss provided in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram of the arrangement of the compartment plates and bottom trusses provided in an embodiment of this application;

[0031] Figure 5 A schematic diagram of the partition plate provided in an embodiment of this application;

[0032] Figure 6 A schematic diagram illustrating the connection between the guide tube and the outer wall panel and inner wall panel provided in an embodiment of this application;

[0033] Figure 7 This is a schematic diagram of a steel lock provided in an embodiment of this application.

[0034] In the diagram: 1. Splicing segment; 2. Outer wall panel; 3. Inner wall panel; 30. Inner upper wall panel; 31. Inner lower wall panel; 4. Partition plate; 40. Opening; 5. Enlarged foundation; 6. Anchoring assembly; 60. Anchor beam; 61. Anchor cable; 62. Guide tube; 7. Bottom truss; 8. Limiting component; 9. Steel locking joint; 90. Limiting plate; 91. Steel section; 10. Connection system. Detailed Implementation

[0035] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0036] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this application embodiment provides a boot-shaped cross-section double-walled steel cofferdam, which includes multiple splicing segments 1. The shape of the double-walled steel cofferdam can be various; for example, it can be circular or square. When it is circular, the splicing segments 1 form a fan-shaped ring; when it is square, four of the splicing segments 1 are right-angled, and the remaining splicing segments 1 are straight lines, as shown in the example. Figure 1Multiple splicing segments 1 are spliced ​​together to form a double-walled steel cofferdam; wherein, splicing segment 1 includes an outer wall panel 2, an inner wall panel 3, several partition plates 4, an enlarged foundation 5, and anchoring components 6. The inner wall panel 3 is arranged alternately with the outer wall panel 2. The cofferdam wall panels of the double-walled steel cofferdam include the inner wall panel 3, the outer wall panel 2, and the partition plates 4, etc.; several partition plates 4 are arranged alternately between the outer wall panel 2 and the inner wall panel 3, and the two ends of the partition plates 4 are connected to the outer wall panel 2 and the inner wall panel 3 respectively, so that in two adjacent partitions The space is enclosed by the partition plate 4, the outer wall plate 2, and the inner wall plate 3; the enlarged foundation 5 is located in the space enclosed by the partition plate 4, the outer wall plate 2, and the inner wall plate 3, and the cross section of the splicing segment 1 is boot-shaped. The enlarged foundation 5 is made of concrete. One end of the anchoring component 6 is connected between the outer wall plate 2 and the inner wall plate 3, and the other end passes through the enlarged foundation 5 and is used to anchor to the riverbed. The purpose of setting the anchoring component 6 is to improve the stability of the cofferdam structure and meet the stress requirements.

[0037] The double-walled steel cofferdam provided in this application has a boot-shaped cross-section. The cofferdam wall panel, which consists of inner wall panel 3, outer wall panel 2, and partition plate 4, transfers the load to the enlarged foundation 5 through the bonding force formed between the enlarged foundation 5 and the cofferdam wall panel.

[0038] The double-walled steel cofferdam provided in this application adopts a boot shape and is filled with an enlarged foundation 5. It fully combines the structural characteristics of the double-walled steel cofferdam and the retaining wall, makes full use of the cofferdam's own strength, rigidity and stability, eliminates the conventional complex internal support structure, reduces the amount of material used, and is simpler and more convenient to construct than conventional cofferdams. It can also be reused.

[0039] To make the double-arm steel cofferdam boot-shaped, see [reference needed]. Figure 2 and Figure 3 As shown, the inner wall panel 3 includes an upper inner wall panel 30 and an lower inner wall panel 31 arranged vertically, and the distance from the lower inner wall panel 31 to the outer wall panel 2 is greater than the distance from the upper inner wall panel 30 to the outer wall panel 2; the enlarged foundation 5 is located between the outer wall panel 2 and the lower inner wall panel 31, and the bottom of the upper inner wall panel 30 is located inside the enlarged foundation 5.

[0040] Since the distance from the inner lower wall panel 31 to the outer wall panel 2 is greater than the distance from the inner upper wall panel 30 to the outer wall panel 2, after arranging the partition plate 4 between the outer wall panel 2 and the inner lower wall panel 31, the enlarged foundation 5 can be poured to form a boot shape.

[0041] To ensure greater stability during cofferdam installation, see [link / reference]. Figure 2 and Figure 4 As shown, the enlarged foundation 5 also includes a bottom truss 7, with its two ends connected to the outer wall panel 2 and the inner wall panel 3, respectively. The bottom truss 15 is welded between the outer wall panel 2 and the inner lower wall panel 31 to make the cofferdam installation more stable and can also serve as a tie rod during the concrete construction of the enlarged foundation 5.

[0042] See Figure 2 As shown, in some preferred embodiments, the anchoring assembly 6 includes an anchor beam 60, an anchor cable 61, and a guide tube 62. The guide tube 62 passes through the enlarged foundation 5. The anchor beam 60 is located above the enlarged foundation 5, and its two ends are connected to the outer wall panel 2 and the inner wall panel 3, respectively. One end of the anchor cable 61 is connected to the anchor beam 60, and the other end passes through the guide tube 62 and exits the enlarged foundation 5.

[0043] The bottom of the guide pipe 62 reserved in the cofferdam should be connected to the riverbed surface, and the guide pipe 62 should be fixed to the outer wall plate 2 or the inner wall plate 3 during the processing of the splicing segment 1. Figure 6 As shown, the guide pipe 62 is fixed to the outer wall panel 2 or the inner wall panel 3 by a limiting member 8, which can be a connecting steel bar. After the cofferdam wall panels are installed in place, concrete for the enlarged foundation 5 is poured between two adjacent partition plates 4 at the bottom of the cofferdam wall panels. After the cofferdam wall panels are installed and the enlarged foundation 5 is constructed, the anchor cable 61 is tensioned to the design preload and anchored to the anchor beam 60 using jacks.

[0044] To achieve the splicing of multiple segments into a double-walled steel cofferdam, see [link / reference]. Figure 1 As shown, two adjacent splicing segments 1 are connected by a steel locking lug 9. See details... Figure 7 As shown, the steel lock 9 includes multiple limiting plates 90 and steel sections 91. The multiple limiting plates 90 are welded to the partition plates 4 of two adjacent splicing sections 1 to form a limiting space, and the steel sections 91 are inserted into the limiting space.

[0045] The various splicing segments 1 of the cofferdam are connected by steel locking joints 9. The limiting plate 90 is welded to the partition plate 4 during the processing of the cofferdam wall panels. The steel 91 can be inserted into the design position after the cofferdam is installed.

[0046] See Figure 5 As shown, the diaphragm plate 4 has a boot-shaped structure with an opening 40 at the top to reduce the amount of material used in the cofferdam structure.

[0047] See Figure 3 As shown, in order to enhance the stability of the outer wall panel 2 and the inner wall panel 3, a number of connecting systems 10 are provided between the outer wall panel 2 and the inner wall panel 3.

[0048] In the description of this application, it should be noted that the terms "upper," "lower," 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 application and simplifying the description, and do not 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 application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0049] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A boot-shaped cross-section double-walled steel cofferdam, characterized in that, It includes multiple splicing segments (1), which are spliced ​​together to form the double-walled steel cofferdam; The splicing segment (1) includes: Outer wall panel (2); Inner wall panel (3), which is spaced apart from the outer wall panel (2); A plurality of partition plates (4) are spaced apart between the outer wall panel (2) and the inner wall panel (3), and the two ends of the partition plates (4) are respectively connected to the outer wall panel (2) and the inner wall panel (3); and, The foundation (5) is enlarged and is located in the space enclosed by the partition plate (4), the outer wall plate (2) and the inner wall plate (3), and the cross section of the splicing segment (1) is boot-shaped. An anchoring assembly (6) has one end connected between the outer wall panel (2) and the inner wall panel (3), and the other end passes through the enlarged foundation (5) and is used to anchor to the riverbed surface; The inner wall panel (3) includes an upper inner wall panel (30) and a lower inner wall panel (31) arranged vertically, and the distance from the lower inner wall panel (31) to the outer wall panel (2) is greater than the distance from the upper inner wall panel (30) to the outer wall panel (2). The enlarged foundation (5) is located between the outer wall panel (2) and the inner lower wall panel (31), and the bottom of the inner upper wall panel (30) is located inside the enlarged foundation (5); The enlarged foundation (5) is also provided with a bottom truss (7), the two ends of which are connected to the outer wall panel (2) and the inner wall panel (3) respectively.

2. The boot-shaped cross-section double-walled steel cofferdam as described in claim 1, characterized in that: The anchoring assembly (6) includes an anchor beam (60), an anchor cable (61), and a guide tube (62). The guide tube (62) passes through the enlarged foundation (5). The anchor beam (60) is located above the enlarged foundation (5), and its two ends are connected to the outer wall panel (2) and the inner wall panel (3) respectively. One end of the anchor cable (61) is connected to the anchor beam (60), and the other end passes through the guide tube (62) out of the enlarged foundation (5).

3. The boot-shaped cross-section double-walled steel cofferdam as described in claim 2, characterized in that: The guide tube (62) is fixed to the outer wall plate (2) or the inner wall plate (3) by the limiting member (8).

4. The boot-shaped cross-section double-walled steel cofferdam as described in claim 1, characterized in that: The two adjacent splicing segments (1) are connected by steel locks (9).

5. The boot-shaped cross-section double-walled steel cofferdam as described in claim 4, characterized in that: The steel lock (9) includes: Multiple limiting plates (90) are welded to the compartment plates (4) of two adjacent splicing segments (1) to form a limiting space; A steel section (91) is inserted into the limiting space.

6. The boot-shaped cross-section double-walled steel cofferdam as described in claim 1, characterized in that: The enlarged foundation (5) is made of concrete.

7. The boot-shaped cross-section double-walled steel cofferdam as described in claim 1, characterized in that: The upper part of the partition plate (4) is provided with an opening (40).

8. The boot-shaped cross-section double-walled steel cofferdam as described in claim 1, characterized in that: Several connecting systems (10) are provided between the outer wall panel (2) and the inner wall panel (3).

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