Combined supporting and protecting structure for shallow-buried bearing platform construction at seawall of cross-sea extra-large bridge

Abstract

The utility model relates to a combined supporting and protecting structure for construction of a shallow-buried bearing platform at a seawall of a cross-sea extra-large bridge, which comprises a retaining wall, steel sheet piles, inclined struts and anti-sliding piers, and the retaining wall is excavated and built on the downstream face of the seawall; the steel sheet piles are arranged on the inner side of the retaining wall, and supporting pieces are arranged between the steel sheet piles and the retaining wall. A shallow-buried bearing platform is arranged on the inner side of the steel sheet pile, and the retaining wall and the steel sheet pile are longer than the bearing platform area; anti-sliding piers are arranged at the positions, close to the steel sheet piles, of the two sides of the bearing platform, one ends of the inclined struts are supported on the steel sheet piles, the other ends of the inclined struts are supported on the anti-sliding piers, and under the condition that the construction space is limited, the steel sheet piles cannot move towards the seawall side, and consequently the steel sheet piles are very close to the bearing platform, foundation pit excavation safety can be guaranteed; the construction safety of the bearing platform area is guaranteed through mutual supporting of the anti-sliding piers on the two sides of the bearing platform, the inclined struts and the steel sheet piles.

Description

Technical Field

[0001] The utility model relates to the technical field of shallow buried pedestal construction at the seawall of a super-large sea-crossing bridge, and in particular to a combined supporting and protective structure for shallow buried pedestal construction at the seawall of a super-large sea-crossing bridge. Background Art

[0002] With the rapid development of my country's economy, transportation modes such as railways and urban rail transit have developed rapidly. At present, when the bridges across rivers, seas and lakes are built, the bridge piers are located on the levees. In order to protect the seawalls and prevent the levees from breaking due to high tides, the piers are very close to the seawalls and the construction space is limited. Therefore, how to ensure the safe construction of the levees during foundation pit excavation is a major technical problem. Summary of the invention

[0003] In order to solve the above problems, the purpose of the utility model is to provide a combined support and protection structure for the construction of shallow-buried caps at the seawall of a cross-sea bridge, which can enable safe excavation of the foundation pit when the bridge piers are set on the seawall and the construction space is limited. In order to achieve the above purpose, the utility model adopts the following technical scheme: a combined support and protection structure for the construction of shallow-buried caps at the seawall of a cross-sea bridge, including a retaining wall, steel sheet piles, diagonal braces, and anti-slip piers. The retaining wall is excavated and built on the back surface of the seawall; the steel sheet piles are arranged on the inner side of the retaining wall, and support members are arranged between the steel sheet piles and the retaining wall; the inner side of the steel sheet piles is a shallow-buried cap, and the length of the retaining wall and the steel sheet piles is greater than the length of the cap area; anti-slip piers are arranged on both sides of the cap near the steel sheet piles, and one end of the diagonal brace is supported on the steel sheet piles, and the other end is supported on the anti-slip pier.

[0004] When the construction space is limited and the steel sheet piles cannot be moved to the side of the seawall, resulting in the steel sheet piles being very close to the pedestal, the safety of foundation pit excavation can be ensured. The mutual support of the anti-slip piers, diagonal braces and steel sheet piles on both sides of the pedestal can ensure the construction safety of the pedestal area. The function of the retaining wall is to prevent the seawall from becoming unstable and ensure safety. The support members make the diagonal braces and steel sheet piles bear force on the retaining wall, which has high strength and strong stability, ensuring construction safety. The length of the retaining wall and the steel sheet piles is greater than the length of the pedestal area, ensuring that both sides of the pedestal can be sufficiently supported and ensuring construction safety. One end of the diagonal brace is supported on the steel sheet pile, and the other end is supported on the anti-slip pier, using the stability principle of the triangle to ensure construction safety.

[0005] Preferably, the steel sheet pile is provided with a double I-beam back rib, and one end of the diagonal brace is supported on the back rib.

[0006] The back ribs are strong, easy to connect, and have strong fixity, making the support stable.

[0007] Preferably, the support member is a support steel, one end of which is welded to the steel sheet pile and the other end is pressed against the retaining wall.

[0008] The supporting steel is strong and firmly connected by welding. The connecting steel supports the diagonal braces and steel sheet piles on the retaining wall, which has high strength and stability, ensuring construction safety.

[0009] Preferably, the steel sheet piles are provided with a plurality of upper and lower parallel back ribs, and a plurality of anti-slip piers with different distances from the steel sheet piles are provided on both sides of the foundation. The back ribs are supported from top to bottom in sequence by a plurality of diagonal braces and anti-slip piers from far to near.

[0010] The anti-slip piers and the upper back ribs that are farther away from the steel sheet piles are supported by diagonal braces, while the anti-slip piers and the lower back ribs that are closer to the steel sheet piles are supported by diagonal braces. The remaining diagonal braces are arranged in sequence. Multiple support points can make the support more stable and ensure construction safety.

[0011] Preferably, a plurality of diagonal braces are arranged in parallel.

[0012] It can make the support more stable and ensure construction safety.

[0013] Preferably, the steel sheet piles are provided with upper and lower back ribs which are parallel to each other, and two anti-slip piers are provided on each side of the base. The anti-slip piers and the lower back ribs close to the steel sheet piles are supported by first diagonal braces, and the anti-slip piers and the upper back ribs away from the steel sheet piles are supported by second diagonal braces.

[0014] There are two anti-slip piers on one side of the pedestal and two anti-slip piers on the other side. The four anti-slip piers are supported by the first diagonal brace, the second diagonal brace and the upper back rib and the lower back rib respectively, which can make the support more stable and ensure the safety of construction.

[0015] Preferably, the first diagonal brace is arranged in parallel with the second diagonal brace.

[0016] It can make the support more stable and ensure construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic elevation diagram of a combined support and protection structure for shallow buried cap construction at the seawall of a super-large sea-crossing bridge of the utility model;

[0018] Figure 2 The utility model is a plan view of a combined support and protection structure for shallow buried cap construction at the seawall of a cross-sea super-large bridge. The reference numerals in the above figure are as follows: 1. retaining wall, 2. steel sheet pile, 3. diagonal brace, 4. anti-slip pier close to the steel sheet pile, 5. support member, 6. cap, 7. back rib, 8. anti-slip pier far from the steel sheet pile, 9. upper back rib, 10. lower back rib, 11. first diagonal brace, 12. second diagonal brace. DETAILED DESCRIPTION

[0019] In the description of the present utility model, it is necessary to understand that the terms "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Example

[0022] The following is combined with Figure 1-2 , the preferred embodiments of the utility model are further described in detail.

[0023] like Figure 1-2 A combined support and protection structure for constructing a shallow buried pedestal 6 at the seawall of a super-large cross-sea bridge is shown, comprising a retaining wall 1, steel sheet piles 2, diagonal braces 3, and anti-slip piers. The retaining wall 1 is excavated and constructed on the back water surface of the seawall; the steel sheet piles 2 are arranged on the inner side of the retaining wall 1, and a support member 5 is provided between the steel sheet piles 2 and the retaining wall 1; the inner side of the steel sheet piles 2 is a shallow buried pedestal 6, and the lengths of the retaining wall 1 and the steel sheet piles 2 are greater than the length of the pedestal 6 area; anti-slip piers are provided on both sides of the pedestal 6 near the steel sheet piles 2, and one end of the diagonal brace 3 is supported on the steel sheet piles 2, and the other end is supported on the anti-slip pier.

[0024] When the construction space is limited and the steel sheet piles 2 cannot be moved to the side of the seawall, resulting in the steel sheet piles 2 being very close to the pedestal 6, the safety of foundation pit excavation can be ensured. The anti-slip piers on both sides of the pedestal 6 and the mutual support of the diagonal braces 3 and the steel sheet piles 2 can ensure the construction safety of the pedestal 6 area. The function of the retaining wall 1 is to prevent the seawall from becoming unstable and ensure safety. The support members 5 support the diagonal braces 3 and the steel sheet piles 2 on the retaining wall 1, which has high strength and strong stability, ensuring construction safety. The length of the retaining wall 1 and the steel sheet piles 2 is greater than the length of the pedestal 6 area, ensuring that both sides of the pedestal 6 can be sufficiently supported, ensuring construction safety. One end of the diagonal brace 3 is supported on the steel sheet pile 2, and the other end is supported on the anti-slip pier, utilizing the stability principle of the triangle to ensure construction safety.

[0025] Specifically, a double I-beam back rib 7 is provided on the steel sheet pile 2 , and one end of the diagonal brace 3 is supported on the back rib 7 .

[0026] The back rib 7 has great strength, is easy to connect, and has strong fixity, making the support stable.

[0027] Specifically, the support member 5 is a support steel, one end of which is welded to the steel sheet pile 2 , and the other end of which is pressed against the retaining wall 1 .

[0028] The supporting steel is strong and firmly connected by welding. The connecting steel supports the force of the diagonal brace 3 and the steel sheet pile 2 on the retaining wall 1, which has high strength and stability, ensuring construction safety.

[0029] In some embodiments, the steel sheet pile 2 is provided with a plurality of upper and lower parallel back ribs 7, and a plurality of anti-slip piers with different distances from the steel sheet pile 2 are provided on both sides of the base 6. The back ribs 7 are supported by a plurality of diagonal braces 3 and anti-slip piers from far to near in sequence from top to bottom.

[0030] The anti-slip piers and the upper back ribs 7 that are farther away from the steel sheet piles 2 are supported by diagonal braces 3, the anti-slip piers and the lower back ribs 7 that are closer to the steel sheet piles 2 are supported by diagonal braces 3, and the remaining diagonal braces 3 are arranged in sequence. Multiple support points can make the support more stable and ensure construction safety.

[0031] Specifically, a plurality of diagonal braces 3 are arranged in parallel.

[0032] It can make the support more stable and ensure construction safety.

[0033] In other embodiments, the steel sheet pile 2 is provided with an upper back rib 9 and a lower back rib 10 which are parallel to each other, and two anti-slip piers are provided on each side of the base 6. The anti-slip pier 4 and the lower back rib 10 close to the steel sheet pile are supported by a first diagonal brace 11, and the anti-slip pier 8 and the upper back rib 9 away from the steel sheet pile are supported by a second diagonal brace 12.

[0034] Two anti-slip piers are provided on one side of the pedestal 6 and two anti-slip piers are also provided on the other side. The four anti-slip piers are supported by the first diagonal brace 11, the second diagonal brace 12 and the upper back rib 9 and the lower back rib 10 respectively, which can make the support more stable and ensure the construction safety.

[0035] Specifically, the first diagonal brace 11 and the second diagonal brace 12 are arranged in parallel.

[0036] It can make the support more stable and ensure construction safety.

[0037] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention.

Claims

1. A combined support and protection structure for shallow buried cap construction at the seawall of a super-large cross-sea bridge, characterized by: Including retaining walls, steel sheet piles, diagonal braces, anti-sliding piers, The retaining wall is excavated and built on the back side of the seawall; The steel sheet piles are arranged inside the retaining wall, and a support member is provided between the steel sheet piles and the retaining wall; The inner side of the steel sheet pile is a shallow buried cap, and the length of the retaining wall and the steel sheet pile is greater than the length of the cap area; Anti-slip piers are provided on both sides of the cap near the steel sheet piles, one end of the diagonal brace is supported on the steel sheet piles, and the other end is supported on the anti-slip piers.

2. According to claim 1, a combined support and protection structure for shallow buried cap construction at the seawall of a super-large cross-sea bridge is characterized by: The steel sheet pile is provided with a double I-beam back rib, and one end of the diagonal brace is supported on the back rib.

3. According to claim 1, a combined support and protection structure for shallow buried cap construction at the seawall of a super-large cross-sea bridge, characterized in that: The support member is a support steel, one end of which is welded to the steel sheet pile, and the other end of which is pressed against the retaining wall.

4. According to claim 2, a combined support and protection structure for shallow buried cap construction at the seawall of a super-large cross-sea bridge is characterized by: The steel sheet piles are provided with a plurality of upper and lower parallel back ribs, and a plurality of anti-slip piers with different distances from the steel sheet piles are provided on both sides of the cap. The back ribs are supported by a plurality of diagonal braces and anti-slip piers from far to near in sequence from top to bottom.

5. According to claim 4, a combined support and protection structure for shallow buried cap construction at the seawall of a super-large cross-sea bridge is characterized by: Several diagonal braces are arranged in parallel.

6. The combined support and protection structure for shallow buried cap construction at the seawall of a super-large cross-sea bridge according to claim 2 is characterized by: The steel sheet pile is provided with an upper back rib and a lower back rib which are parallel to each other. Two anti-slip piers are provided on one side of the foundation. The anti-slip pier and the lower back rib close to the steel sheet pile are supported by a first diagonal brace, and the anti-slip pier and the upper back rib away from the steel sheet pile are supported by a second diagonal brace.

7. The combined support and protection structure for shallow buried cap construction at the seawall of a super-large cross-sea bridge according to claim 6 is characterized by: The first diagonal brace is arranged in parallel with the second diagonal brace.

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