Temporary retaining wall behind abutment suitable for shallow-buried embankment and steel trestle system

Abstract

The utility model relates to the technical field of bridge engineering, in particular to a temporary retaining wall behind an abutment and a steel trestle system suitable for a shallow-buried embankment. The temporary retaining wall behind the abutment comprises a prefabricated reinforced concrete walkway plate which is laid in a bridge abutment area, and an embedded connecting piece is arranged in the prefabricated reinforced concrete walkway plate; the breast board assembly is vertically arranged on the upper surface of the prefabricated reinforced concrete walkway board and is connected with the prefabricated reinforced concrete walkway board into a whole through the embedded connecting piece. The prefabricated reinforced concrete walkway plate which is common in a construction site is used as the shallow-buried embankment filling pressing plate, the characteristics of large dead weight, high universality, convenient construction and the like of the prefabricated reinforced concrete walkway plate are effectively utilized, rapid construction of the rear-abutment temporary retaining wall structure is achieved, the site construction workload is greatly reduced, and the construction efficiency is improved. Therefore, the risk in the construction process is reduced.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, specifically to a temporary retaining wall and steel trestle bridge system suitable for shallow buried embankments. Background Technology

[0002] Currently, temporary steel trestle bridges are widely used in the construction of various types of bridges over water, providing working platforms and construction access for bridge projects. Their application facilitates the construction of the bridge substructure, and due to their similar structural types—mostly "steel pipe piles + Bailey truss" or "steel pipe piles + structural steel"—they offer strong reusability and versatility. Bridge construction projects typically incorporate these characteristics, resulting in mature temporary steel trestle bridge construction technology.

[0003] However, in some construction scenarios, the turnover, versatility and structural volume of steel trestle bridges limit the form of the bridge abutment structure at the end of the trestle bridge. In the face of insufficient backfill volume and shallow filling depth, how to design a retaining wall structure that is easy to construct and has a low on-site construction workload has become a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In the construction of steel trestle bridges, the construction of temporary retaining walls is complex and time-consuming, especially when the backfill volume at the end of the trestle bridge is small and the embankment is shallow.

[0005] In a first aspect, embodiments of this application provide a temporary retaining wall behind an abutment suitable for shallow-buried embankments, comprising:

[0006] A precast reinforced concrete walkway slab is laid in the bridge abutment area, and the precast reinforced concrete walkway slab is provided with embedded connectors.

[0007] The retaining plate assembly is erected on the upper surface of the precast reinforced concrete walkway slab and is integrated with the precast reinforced concrete walkway slab through the embedded connector.

[0008] In conjunction with the first aspect, in one embodiment, the retaining plate assembly includes:

[0009] At least one vertical rib of the panel is connected to the embedded connector of the precast reinforced concrete walkway slab;

[0010] At least one steel panel is erected above the precast reinforced concrete walkway slab and connected to the embedded connector via the panel's vertical ribs.

[0011] In conjunction with the first aspect, in one embodiment, the retaining plate assembly further includes: a leveling pad, which is laid on the top surface of the steel panel, the leveling pad being spaced apart from the precast reinforced concrete walkway slab, and the space between the leveling pad and the precast reinforced concrete walkway slab being filled with embankment material.

[0012] In conjunction with the first aspect, in one embodiment, the pre-embedded connector is welded to the vertical rib of the panel.

[0013] In conjunction with the first aspect, in one embodiment, the pre-embedded connector is detachably connected to the vertical rib of the panel.

[0014] In conjunction with the first aspect, in one embodiment, the pre-embedded connector includes: a connecting bolt, one end of which is embedded in the precast reinforced concrete walkway slab, and the other end extends out of the precast reinforced concrete walkway slab and is threadedly connected to the vertical rib of the panel.

[0015] In conjunction with the first aspect, in one embodiment, the pre-embedded connector includes: a connecting pin, one end of which is embedded in the precast reinforced concrete walkway slab, and the other end of which extends out of the precast reinforced concrete walkway slab and is inserted into the vertical rib of the panel.

[0016] In conjunction with the first aspect, in one embodiment, the pre-embedded connector includes: a connecting pin, one end of which is embedded in the precast reinforced concrete walkway slab, and the other end of which extends out of the precast reinforced concrete walkway slab and is interference-fitted with the vertical rib of the panel.

[0017] In conjunction with the first aspect, in one embodiment, the leveling pad is provided with a snap-fit ​​hole at the bottom, and the vertical rib of the panel is provided with a positioning protrusion at the end away from the precast reinforced concrete walkway slab, the positioning protrusion being positioned and engaged with the snap-fit ​​hole.

[0018] Secondly, embodiments of this application provide a steel trestle bridge system, which includes: a temporary retaining wall behind the abutment as described in any of the above.

[0019] The beneficial effects of the technical solutions provided in this application include at least the following:

[0020] This application utilizes precast reinforced concrete walkway slabs, commonly found on construction sites, as backfill slabs for shallow-buried embankments. This effectively leverages the high weight, versatility, and ease of construction of precast reinforced concrete walkway slabs, enabling rapid construction of the temporary retaining wall structure behind the abutment. This significantly reduces on-site construction workload and thus lowers construction risks. Furthermore, this application utilizes temporary steel structure retaining slabs as the retaining structure, achieving the same reusability as temporary steel trestle bridges. Construction and reuse can be carried out simultaneously during the installation and dismantling of trestle bridges, reducing the amount of permanent structural materials used in conventional concrete abutments or the construction workload of driven pile retaining slabs. Attached Figure Description

[0021] 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.

[0022] Figure 1 This is a cross-sectional view of the temporary retaining wall behind the platform from a first perspective in the embodiments of this application;

[0023] Figure 2 This is a cross-sectional view of the temporary retaining wall behind the abutment from a second perspective in an embodiment of this application.

[0024] In the diagram: 1. Precast reinforced concrete walkway slab; 2. Embedded connectors; 3. Steel panel; 4. Panel vertical ribs; 5. Leveling pad. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0026] In the construction of steel trestle bridges, the construction of temporary retaining walls is complex and time-consuming, especially when the backfill volume at the end of the trestle bridge is small and the embankment is shallow.

[0027] Firstly, such as Figure 1 As shown, this application provides a temporary retaining wall behind an abutment suitable for shallow-buried embankments, comprising: a precast reinforced concrete walkway slab 1 and a retaining slab assembly; wherein,

[0028] A precast reinforced concrete walkway slab 1 is laid in the bridge abutment area, and a pre-embedded connector 2 is provided in the precast reinforced concrete walkway slab 1. A retaining plate assembly is erected on the upper surface of the precast reinforced concrete walkway slab 1 and is connected to the precast reinforced concrete walkway slab 1 as a whole through the pre-embedded connector 2.

[0029] It is worth noting that this application utilizes precast reinforced concrete walkway slabs, which are commonly found on construction sites, as backfill slabs for shallow-buried embankments. This effectively leverages the characteristics of precast reinforced concrete walkway slabs, such as their heavy weight, strong versatility, and convenient construction, to achieve rapid construction of the temporary retaining wall structure behind the abutment. This greatly reduces the amount of on-site construction work and thus lowers the risks during the construction process.

[0030] In some alternative embodiments, the retaining plate assembly includes: at least one panel vertical rib 4 and at least one steel panel 3; wherein,

[0031] The vertical ribs 4 of the panel are connected to the embedded connectors 2 of the precast reinforced concrete walkway slab 1. The steel panel 3 is erected above the precast reinforced concrete walkway slab 1 and is connected to the embedded connectors 2 through the vertical ribs 4 of the panel.

[0032] It is worth noting that by using steel panels 3 and vertical ribs 4 to form a steel structure retaining plate as a retaining structure, the temporary trestle retaining structure can be reused.

[0033] In some specific implementation methods, such as Figure 1 and Figure 2 As shown, the retaining plate assembly also includes: a leveling pad 5, which is laid on the top surface of the steel panel 3. The leveling pad 5 is spaced apart from the precast reinforced concrete walkway slab 1, and the space between the leveling pad 5 and the precast reinforced concrete walkway slab 1 is filled with embankment material.

[0034] Understandably, installing leveling pad 5 facilitates leveling work after the bridge deck and embankment are filled.

[0035] In a first optional embodiment of this application, in order to improve connection stability, the pre-embedded connector 2 is welded to the vertical rib of the panel 4.

[0036] In a second optional embodiment of this application, the pre-embedded connector 2 is detachably connected to the vertical rib of the panel 4.

[0037] It is worth noting that, in order to facilitate disassembly and repeated use, the pre-embedded connector 2 and the panel vertical rib 4 are connected in a detachable manner, which helps operators transport and store the equipment.

[0038] In conjunction with the second optional implementation method described above, in one embodiment, the pre-embedded connector 2 includes: a connecting bolt, one end of which is embedded in the precast reinforced concrete walkway slab 1, and the other end extends out of the precast reinforced concrete walkway slab 1 and is threadedly connected to the vertical rib 4 of the panel.

[0039] In conjunction with the second optional implementation method described above, in another embodiment, the pre-embedded connector 2 includes: a connecting pin, one end of which is embedded in the precast reinforced concrete walkway slab 1, and the other end of which extends out of the precast reinforced concrete walkway slab 1 and is inserted into the vertical rib of the panel 4.

[0040] In conjunction with the second optional implementation method described above, in another embodiment, the pre-embedded connector 2 includes: a connecting pin, one end of which is embedded in the precast reinforced concrete walkway slab 1, and the other end extends out of the precast reinforced concrete walkway slab 1 and is interference-fitted with the vertical rib of the panel 4.

[0041] It should be noted that this application is not limited to the connection methods in the above three embodiments. Operators can choose other connection methods that can achieve a detachable connection between the pre-embedded connector 2 and the panel vertical rib 4 according to the specific working conditions.

[0042] In some preferred embodiments, in order to improve the laying efficiency of the leveling pad 5, the bottom of the leveling pad 5 is provided with a snap-fit ​​hole, and the end of the panel vertical rib 4 away from the precast reinforced concrete walkway slab 1 is provided with a positioning protrusion, which is positioned and engaged with the snap-fit ​​hole.

[0043] Secondly, a steel trestle bridge system includes: a temporary retaining wall behind an abutment, comprising: a precast reinforced concrete walkway slab 1 and a retaining slab assembly; wherein...

[0044] A precast reinforced concrete walkway slab 1 is laid in the bridge abutment area, and a pre-embedded connector 2 is provided in the precast reinforced concrete walkway slab 1. A retaining plate assembly is erected on the upper surface of the precast reinforced concrete walkway slab 1 and is connected to the precast reinforced concrete walkway slab 1 as a whole through the pre-embedded connector 2.

[0045] It is worth noting that this application utilizes precast reinforced concrete walkway slabs, which are commonly found on construction sites, as backfill slabs for shallow-buried embankments. This effectively leverages the characteristics of precast reinforced concrete walkway slabs, such as their heavy weight, strong versatility, and convenient construction, to achieve rapid construction of the temporary retaining wall structure behind the abutment. This greatly reduces the amount of on-site construction work and thus lowers the risks during the construction process.

[0046] In some alternative embodiments, the retaining plate assembly includes: at least one panel vertical rib 4 and at least one steel panel 3; wherein,

[0047] The vertical ribs 4 of the panel are connected to the embedded connectors 2 of the precast reinforced concrete walkway slab 1. The steel panel 3 is erected above the precast reinforced concrete walkway slab 1 and is connected to the embedded connectors 2 through the vertical ribs 4 of the panel.

[0048] It is worth noting that by using steel panels 3 and vertical ribs 4 to form a steel structure retaining plate as a retaining structure, the temporary trestle retaining structure can be reused.

[0049] In some specific embodiments, the retaining plate assembly further includes: a leveling pad 5, which is laid on the top surface of the steel panel 3, the leveling pad 5 is spaced apart from the precast reinforced concrete walkway slab 1, and the space between the leveling pad 5 and the precast reinforced concrete walkway slab 1 is filled with embankment material.

[0050] Understandably, installing leveling pad 5 facilitates leveling work after the bridge deck and embankment are filled.

[0051] In a first optional embodiment of this application, in order to improve connection stability, the pre-embedded connector 2 is welded to the vertical rib of the panel 4.

[0052] In a second optional embodiment of this application, the pre-embedded connector 2 is detachably connected to the vertical rib of the panel 4.

[0053] It is worth noting that, in order to facilitate disassembly and repeated use, the pre-embedded connector 2 and the panel vertical rib 4 are connected in a detachable manner, which helps operators transport and store the equipment.

[0054] In conjunction with the second optional implementation method described above, in one embodiment, the pre-embedded connector 2 includes: a connecting bolt, one end of which is embedded in the precast reinforced concrete walkway slab 1, and the other end extends out of the precast reinforced concrete walkway slab 1 and is threadedly connected to the vertical rib 4 of the panel.

[0055] In conjunction with the second optional implementation method described above, in another embodiment, the pre-embedded connector 2 includes: a connecting pin, one end of which is embedded in the precast reinforced concrete walkway slab 1, and the other end of which extends out of the precast reinforced concrete walkway slab 1 and is inserted into the vertical rib of the panel 4.

[0056] In conjunction with the second optional implementation method described above, in another embodiment, the pre-embedded connector 2 includes: a connecting pin, one end of which is embedded in the precast reinforced concrete walkway slab 1, and the other end extends out of the precast reinforced concrete walkway slab 1 and is interference-fitted with the vertical rib of the panel 4.

[0057] It should be noted that this application is not limited to the connection methods in the above three embodiments. Operators can choose other connection methods that can achieve a detachable connection between the pre-embedded connector 2 and the panel vertical rib 4 according to the specific working conditions.

[0058] In some preferred embodiments, in order to improve the laying efficiency of the leveling pad 5, the bottom of the leveling pad 5 is provided with a snap-fit ​​hole, and the end of the panel vertical rib 4 away from the precast reinforced concrete walkway slab 1 is provided with a positioning protrusion, which is positioned and engaged with the snap-fit ​​hole.

[0059] In summary, this application utilizes precast reinforced concrete walkway slabs, commonly found on construction sites, as backfill slabs for shallow-buried embankments. This effectively leverages the high weight, versatility, and ease of construction of precast reinforced concrete walkway slabs, enabling rapid construction of the temporary retaining wall structure behind the abutment. This significantly reduces on-site construction workload and thus lowers construction risks. Furthermore, this application utilizes temporary steel structure retaining slabs as the retaining structure, achieving the same reusability as temporary steel trestle bridges. Construction and reuse can be carried out simultaneously during the installation and dismantling of trestle bridges, reducing the amount of permanent structural materials used in conventional concrete abutments or the construction workload of driven pile retaining slabs.

[0060] 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.

[0061] 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.

[0062] 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 temporary retaining wall behind an abutment suitable for shallow-buried embankments, characterized in that, include: A precast reinforced concrete walkway slab (1) is laid in the bridge abutment area, and the precast reinforced concrete walkway slab (1) is provided with embedded connectors (2); The retaining plate assembly is erected on the upper surface of the precast reinforced concrete walkway slab (1) and is connected to the precast reinforced concrete walkway slab (1) as a whole through the pre-embedded connector (2).

2. The temporary retaining wall behind the abutment as described in claim 1, characterized in that, The retaining plate assembly includes: At least one panel vertical rib (4) is connected to the embedded connector (2) of the precast reinforced concrete walkway slab (1); At least one steel panel (3) is erected above the precast reinforced concrete walkway slab (1) and connected to the embedded connector (2) through the panel vertical rib (4).

3. The temporary retaining wall behind the abutment as described in claim 2, characterized in that, The retaining plate assembly also includes a leveling pad (5), which is laid on the top surface of the steel panel (3). The leveling pad (5) is spaced apart from the precast reinforced concrete walkway slab (1), and the space between the leveling pad (5) and the precast reinforced concrete walkway slab (1) is filled with embankment material.

4. The temporary retaining wall behind the abutment as described in claim 3, characterized in that: The pre-embedded connector (2) is welded to the vertical rib of the panel (4).

5. The temporary retaining wall behind the abutment as described in claim 3, characterized in that: The pre-embedded connector (2) is detachably connected to the vertical rib of the panel (4).

6. The temporary retaining wall behind the abutment as described in claim 5, characterized in that, The pre-embedded connector (2) includes a connecting bolt, one end of which is embedded in the precast reinforced concrete walkway slab (1), and the other end extends out of the precast reinforced concrete walkway slab (1) and is threadedly connected to the vertical rib of the panel (4).

7. The temporary retaining wall behind the abutment as described in claim 5, characterized in that, The pre-embedded connector (2) includes a connecting pin, one end of which is embedded in the precast reinforced concrete walkway slab (1), and the other end extends out of the precast reinforced concrete walkway slab (1) and is inserted into the vertical rib of the panel (4).

8. The temporary retaining wall behind the abutment as described in claim 5, characterized in that, The pre-embedded connector (2) includes a connecting pin, one end of which is embedded in the precast reinforced concrete walkway slab (1), and the other end extends out of the precast reinforced concrete walkway slab (1) and is interference-fitted with the vertical rib of the panel (4).

9. The temporary retaining wall behind the abutment as described in claim 3, characterized in that: The leveling pad (5) has a snap-fit ​​hole at the bottom, and the panel vertical rib (4) has a positioning protrusion at one end away from the precast reinforced concrete walkway slab (1). The positioning protrusion is positioned and engaged with the snap-fit ​​hole.

10. A steel trestle bridge system, characterized in that, include: The temporary retaining wall behind the abutment as described in any one of claims 1-9.

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