Cantilever structure of retaining wall of existing road

Abstract

The utility model discloses an existing road retaining wall overhanging structure which is characterized in that existing longitudinal bars are formed on an existing road retaining wall, the retaining wall overhanging structure comprises a newly-built guardrail, an overhanging beam and a base layer plate, a plurality of stirrups and a plurality of first horizontal longitudinal bars are arranged in the overhanging beam, and the first horizontal longitudinal bars are arranged in the stirrups in a penetrating mode and fixed along the inner side walls of the stirrups. The current longitudinal bars are arranged in the cantilever beams in a penetrating manner and are fixed with the stirrups and the first horizontal longitudinal bars; a plurality of second horizontal longitudinal bars and a plurality of horizontal transverse bars are arranged in the base layer plate, the second horizontal longitudinal bars are fixed to the horizontal transverse bars, one side of the base layer plate is arranged in the cantilever beam in a penetrating mode, and the horizontal transverse bars are fixedly connected with the current longitudinal bars and the stirrups; the newly-built guardrail is arranged on the cantilever beam, embedded steel bars are arranged in the newly-built guardrail, and the embedded steel bars are fixedly connected with the first horizontal longitudinal bars. The retaining wall cantilever structure has the advantages that the masonry amount of the newly-built retaining wall can be effectively reduced, the old retaining wall is utilized to the maximum extent, and the occupied area of the retaining wall is not increased due to the widened structure.

Description

Technical Field

[0001] The utility model relates to the technical field of road construction, in particular to a cantilever structure of an existing highway retaining wall. Background Art

[0002] With the development of China's economy and the continuous increase in the number of vehicles, road traffic conditions are becoming increasingly congested, becoming a major issue affecting people's lives and urban development.

[0003] Traffic congestion not only affects travel efficiency and comfort, but may also lead to more traffic accidents, which has a negative impact on economic development and the environment. Therefore, urban roads and inter-city roads often need to be widened and renovated to improve road capacity and alleviate traffic congestion. When widening roads, it is often necessary to widen them based on existing retaining walls, so the study of retaining wall widening is very important.

[0004] There are two common widening schemes for retaining walls. The first is to demolish the old retaining wall and then build a new one. This method is expensive to demolish and rebuild, and the demolition of the old retaining wall will generate a lot of waste and pollution, which violates the principles of recycling and energy conservation. The second is to widen the entire section of the outer side of the old retaining wall. The full-section widening will increase the land area and require a lot of masonry work. Improvements need to be made. Utility Model Content

[0005] The purpose of the utility model is to propose an existing highway retaining wall cantilever structure which can not only effectively reduce the masonry workload of a new retaining wall and maximize the use of an old retaining wall, but also widen the structure without increasing the area occupied by the retaining wall, thereby saving the overall land use of the road.

[0006] The utility model proposes an existing highway retaining wall cantilever structure, the retaining wall cantilever structure is arranged on the existing highway retaining wall, the existing highway retaining wall is formed with existing longitudinal reinforcement, and is characterized in that: the retaining wall cantilever structure comprises a newly built guardrail, a cantilever beam and a base plate, a plurality of stirrups and a plurality of first horizontal longitudinal reinforcements are arranged in the cantilever beam, each of the first horizontal longitudinal reinforcements is passed through the stirrups and fixed along the inner wall of the stirrups, each of the first horizontal longitudinal reinforcements is perpendicular to the stirrups, the cantilever beam is arranged on the existing highway retaining wall, the existing longitudinal reinforcement is passed through the cantilever beam and fixed with the stirrups and the first horizontal longitudinal reinforcement;

[0007] A plurality of second horizontal longitudinal bars and a plurality of horizontal transverse bars are arranged in the base plate, and the plurality of second horizontal longitudinal bars are fixed to the horizontal transverse bars. The second horizontal longitudinal bars and the horizontal transverse bars on one side of the base plate are passed through the cantilever beam, and the plurality of horizontal transverse bars are connected and fixed to the existing longitudinal bars and stirrups.

[0008] The newly built guardrail is arranged on the cantilever beam, and embedded steel bars are arranged in the newly built guardrail. The embedded steel bars are connected and fixed to a plurality of first horizontal longitudinal bars.

[0009] Preferably, the bottom end of the cantilever beam and the existing highway retaining wall are both provided with stepped grooves, and the stepped grooves at the bottom end of the cantilever beam and the stepped grooves on the existing highway retaining wall are embedded with each other.

[0010] Preferably, a reinforcement anchor rod is provided inside the cantilever beam, and the reinforcement anchor rod is in an "L" shape.

[0011] Preferably, the plurality of second horizontal longitudinal reinforcements and the plurality of horizontal transverse reinforcements in the base plate are a double-layer structure, the plurality of second horizontal longitudinal reinforcements are passed through two layers of horizontal transverse reinforcements, and the plurality of second horizontal longitudinal reinforcements are fixed to the bottom surface of the upper horizontal transverse reinforcement or the upper surface of the lower horizontal transverse reinforcement.

[0012] Preferably, the outer side surface of the cantilever beam is configured as a curved surface.

[0013] Preferably, a drip groove is formed on the outer surface of the cantilever beam.

[0014] Preferably, an abutment platform is formed on one side of the cantilever beam close to the base plate, the abutment platform is flush with the surface of the base plate, a panel layer is provided on the base plate, and one side of the panel layer abuts against the abutment platform.

[0015] Preferably, the thickness dimension of the panel layer is set to "H", the height difference between the abutment platform surface and the top surface of the cantilever beam is set to "h", and H>h is satisfied.

[0016] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0017] 1. The cantilever structure of the retaining wall includes a new guardrail, a cantilever beam and a base plate. The cantilever beam is set on the existing highway retaining wall, and the existing longitudinal reinforcement is tied and fixed with the first horizontal longitudinal reinforcement and stirrups. It can not only effectively reduce the masonry workload of the new retaining wall and maximize the use of the old retaining wall, but also widen the structure without increasing the area of ​​the retaining wall, thus saving the overall land use of the road.

[0018] 2. A reinforcement anchor rod is arranged at the bottom end of the base plate. The reinforcement anchor rod is in an "L" shape, and one end of the reinforcement anchor rod is passed through the cantilever beam, so that the cantilever beam is more stable and better balanced on the existing highway retaining wall.

[0019] 3. Set the outer surface of the cantilever beam to an arc surface to make the structure more beautiful; and open a drip groove on the outer surface of the cantilever beam to prevent water stains from contaminating the wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an existing highway retaining wall cantilever structure in an embodiment;

[0021] Figure 2 It is a schematic diagram of the structure of the embedded steel bars and the existing longitudinal bars in the embodiment;

[0022] Figure 3 is a schematic structural diagram of stirrups and first horizontal longitudinal reinforcement in an embodiment;

[0023] Figure 4 is a schematic diagram of the structure of the second horizontal longitudinal reinforcement and the horizontal transverse reinforcement of the embodiment;

[0024] Figure 5 It is a partial schematic diagram of an existing highway retaining wall cantilever structure in an embodiment;

[0025] Figure 6 It is a schematic structural diagram of the abutment platform of the embodiment.

[0026] Figure numerals: 1. New guardrail; 11. Embedded steel bars; 2. Cantilever beam; 21. Stirrups; 22. First horizontal longitudinal reinforcement; 23. Arc-shaped surface; 24. Drip groove; 25. Abutment platform; 3. Base plate; 31. Second horizontal longitudinal reinforcement; 32. Horizontal transverse reinforcement; 4. Existing highway retaining wall; 41. Existing longitudinal reinforcement; 42. Stepped pit; 5. Reinforcement anchor rod; 6. Panel layer. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1-6 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Reference Figure 1 , Figure 2 and Figure 3 , a cantilever structure of an existing highway retaining wall, wherein the cantilever structure of the retaining wall includes a newly built guardrail 1, a cantilever beam 2 and a base plate 3, the cantilever beam 2 is arranged on the existing highway retaining wall 4, and the top of the existing highway retaining wall 4 is chiseled off to expose the existing longitudinal reinforcement 41. A plurality of stirrups 21 and a plurality of first horizontal longitudinal reinforcements 22 are arranged in the cantilever beam 2, and the plurality of first horizontal longitudinal reinforcements 22 are evenly distributed along the inner wall of the stirrup 21, and the plurality of first horizontal longitudinal reinforcements 22 are tied and fixed to each stirrup 21, and the plurality of first horizontal longitudinal reinforcements 22 and each stirrup 21 are made perpendicular to each other. The existing longitudinal reinforcement 41 on the existing highway retaining wall 4 is passed into the cantilever beam 2, and is tied and fixed to each stirrup 21 and the first horizontal longitudinal reinforcement 22, so that the existing highway retaining wall 4 and the cantilever beam 2 are connected as a whole.

[0029] Reference Figure 2 , Figure 3 and Figure 4, a plurality of second horizontal longitudinal bars 31 and a plurality of horizontal transverse bars 32 are arranged in the base plate 3, and the plurality of second horizontal longitudinal bars 31 and the plurality of horizontal transverse bars 32 in the base plate 3 are divided into two layers, and the plurality of second horizontal longitudinal bars 31 are located between the two layers of horizontal transverse bars 32, and the plurality of second horizontal longitudinal bars 31 in the upper layer are tied and fixed to the bottom surface of the upper layer of horizontal transverse bars 32, and the plurality of second horizontal longitudinal bars 31 in the lower layer are tied and fixed to the upper surface of the lower layer of horizontal transverse bars 32. The second horizontal longitudinal bars 31 and the horizontal transverse bars 32 located on one side of the base plate 3 are passed through the cantilever beam 2, and the second horizontal longitudinal bars 31 located in the cantilever beam 2 are tied and fixedly connected with the stirrups 21 and the existing longitudinal bars 41, and the horizontal transverse bars 32 located in the cantilever beam 2 are tied and fixedly connected with the first horizontal longitudinal bars 22, the stirrups 21 and the existing longitudinal bars 41. The newly built guardrail 1 is set at the top of the cantilever beam 2. Embedded steel bars 11 are set in the newly built guardrail 1. The embedded steel bars 11 are tied and fixed with the stirrups 21 and the first horizontal longitudinal bars 22 in the cantilever beam 2. Finally, the existing longitudinal bars 41, the first horizontal longitudinal bars 22, the stirrups 21, the second horizontal longitudinal bars 31, the horizontal transverse bars 32 and the embedded steel bars 11 are fixed by integrally pouring concrete.

[0030] Reference Figure 5 and Figure 6 In order to achieve a good connection effect between the cantilever beam 2 and the existing highway retaining wall 4, a stepped pit 42 is knocked out on the top surface of the existing highway retaining wall 4, and the slope ratio of the stepped pit 42 knocked out on the top surface of the existing highway retaining wall 4 is 1:4. After the cantilever beam 2 is poured with concrete, a corresponding stepped pit 42 is also formed at the bottom of the cantilever beam 2, so that the stepped pit 42 at the bottom of the cantilever beam 2 is embedded with the stepped pit 42 on the top surface of the existing highway retaining wall 4. In order to further improve the connection strength between the cantilever beam 2 and the existing highway retaining wall 4, a reinforcement anchor rod 5 is inserted into the cantilever beam 2, and the reinforcement anchor rod 5 is set to be "L" shaped, and the reinforcement anchor rod 5 is located below the base plate 3 and tilted downward, so as to balance the cantilever beam 2 on the existing highway retaining wall 4, so that the cantilever beam 2 can maintain a stable position on the existing highway retaining wall 4.

[0031] The outer surface of the cantilever beam 2 is set as an arc surface 23, so that the cantilever beam 2 has a higher structural strength. The newly built guardrail 1 is set on the cantilever beam 2, so that the cantilever beam 2 has a better supporting effect on the newly built guardrail 1 and has an aesthetic effect. In addition, a drip groove 24 is horizontally opened on the surface of the arc surface 23 of the cantilever beam 2. When rainwater flows into the drip groove 24, it will drip. The setting of the drip groove 24 prevents rainwater from flowing to the connection between the cantilever beam 2 and the existing highway retaining wall 4, and also prevents water stains from contaminating the wall surface. In order to further improve the waterproof sealing effect between the cantilever beam 2 and the existing highway retaining wall 4, a waterproof coating is applied on the surface of the stepped pit 42 of the cantilever beam 2 and the existing highway retaining wall 4, so that the retaining wall cantilever structure has a longer service life.

[0032] An abutment platform 25 is formed on the surface of one side of the cantilever beam 2 close to the base plate 3. The abutment platform 25 formed on the surface of one side of the cantilever beam 2 is flush with the surface of the base plate 3, and a panel layer 6 is formed on the base plate 3 so that one side of the panel layer 6 abuts on the abutment platform 25. The thickness dimension of the panel layer 6 is set to "H", and the height dimension difference between the abutment platform 25 and the top of the cantilever beam 2 is set to "h", and H>h is satisfied, so that one side of the poured panel layer 6 is in contact with and connected to the newly built guardrail 1, thereby further improving the connection strength between the newly built guardrail 1 and the cantilever beam 2.

[0033] The specific implementation principle of the embodiment of the present application is: knock out the top of the existing highway retaining wall 4 to expose the existing longitudinal reinforcement 41 at the top of the existing highway retaining wall 4, and knock out a stepped pit 42 on the top surface of the existing highway retaining wall 4, and the slope ratio of the stepped pit 42 is 1:4. A plurality of first horizontal longitudinal reinforcements 22 are sequentially inserted into each stirrup 21, and a plurality of first horizontal longitudinal reinforcements 22 are evenly distributed along the inner wall of the stirrup 21, and each first horizontal longitudinal reinforcement 22 is tied and fixed with the stirrup 21. Then, the first horizontal longitudinal reinforcement 22 and stirrup 21 that are tied and fixed are placed on the existing highway retaining wall 4, so that the existing longitudinal reinforcement 41 is inserted into the interior of a plurality of first horizontal longitudinal reinforcements 22, and the existing steel bars are respectively tied and fixed with the stirrup 21 and the first horizontal longitudinal reinforcement 22.

[0034] Arrange a number of horizontal transverse bars 32 in two layers, and some of the second horizontal longitudinal bars 31 are placed on the lower horizontal transverse bars 32 and tied together, and some of the second horizontal longitudinal bars 31 are placed below the upper horizontal transverse bars 32 and tied together, and evenly distributed along the length direction of the horizontal transverse bars 32. One side of the tied and fixed second horizontal longitudinal bars 31 and horizontal transverse bars 32 is passed between the stirrups 21, so that the upper horizontal transverse bars 32 and the upper ends of the stirrups 21 are on the same horizontal plane. Tie and fix the embedded steel bars 11 of the newly built guardrail 1 with the stirrups 21 and the first horizontal longitudinal bars 22, and finally cast concrete at the existing longitudinal bars 41, stirrups 21, first horizontal longitudinal bars 22, second horizontal longitudinal bars 31, horizontal transverse bars 32 and embedded steel bars 11 to form cantilever beams 2, base plates 3 and complete newly built guardrails 1.

[0035] A reinforcing anchor rod 5 is provided at the bottom end of the base plate 3, one end of the reinforcing anchor rod 5 is in an "L" shape, and the other end is passed through the cantilever beam 2 to reinforce the structural strength of the cantilever beam 2. The cantilever structure is provided with an arc-shaped outer surface, which is more beautiful, and a drip groove is provided at the bottom of the eaves to prevent water stains from contaminating the wall surface. The cantilever structure is connected to the existing retaining wall by embedded reinforcement, and a waterproof coating is designed on the contact surface. The pavement structure is combined with the retaining wall modification structure to change the center of gravity of the structure and increase the safety and stability of the retaining wall. The setting of the retaining wall cantilever structure can maximize the use of the existing highway retaining wall 4, reduce the amount of masonry work for the demolition of the existing highway retaining wall 4, and reduce the project cost. In addition, the new modified retaining wall cantilever structure does not increase the area occupied by the retaining wall, thereby improving the space utilization of the road.

[0036] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all protected by the utility model.

Claims

1. An existing highway retaining wall cantilever structure, arranged on an existing highway retaining wall, on which existing longitudinal reinforcement is formed, characterized in that: The cantilever structure of the retaining wall includes a newly built guardrail, a cantilever beam and a base plate, a plurality of stirrups and a plurality of first horizontal longitudinal bars are arranged in the cantilever beam, each of the first horizontal longitudinal bars is passed through the stirrup and fixed along the inner wall of the stirrup, each of the first horizontal longitudinal bars is perpendicular to the stirrup, the cantilever beam is arranged on the existing highway retaining wall, the existing longitudinal bars are passed through the cantilever beam and fixed to the stirrup and the first horizontal longitudinal bars; A plurality of second horizontal longitudinal bars and a plurality of horizontal transverse bars are arranged in the base plate, and the plurality of second horizontal longitudinal bars are fixed to the horizontal transverse bars. The second horizontal longitudinal bars and the horizontal transverse bars on one side of the base plate are passed through the cantilever beam, and the plurality of horizontal transverse bars are connected and fixed to the existing longitudinal bars and stirrups. The newly built guardrail is arranged on the cantilever beam, and embedded steel bars are arranged in the newly built guardrail. The embedded steel bars are connected and fixed to a plurality of first horizontal longitudinal bars.

2. The existing highway retaining wall cantilever structure according to claim 1, characterized in that: The bottom end of the cantilever beam and the existing highway retaining wall are both provided with stepped grooves, and the stepped grooves at the bottom end of the cantilever beam and the stepped grooves on the existing highway retaining wall are embedded with each other.

3. The existing highway retaining wall cantilever structure according to claim 1 is characterized in that: A reinforcement anchor rod is provided inside the cantilever beam, and the reinforcement anchor rod is in an "L" shape.

4. The existing highway retaining wall cantilever structure according to claim 1, characterized in that: The plurality of second horizontal longitudinal reinforcements and the plurality of horizontal transverse reinforcements in the base plate form a double-layer structure, the plurality of second horizontal longitudinal reinforcements are passed through between the two layers of horizontal transverse reinforcements, and the plurality of second horizontal longitudinal reinforcements are fixed to the bottom surface of the upper horizontal transverse reinforcement or the upper surface of the lower horizontal transverse reinforcement.

5. The existing highway retaining wall cantilever structure according to claim 1 is characterized in that: The outer side surface of the cantilever beam is arranged as a curved surface.

6. The existing highway retaining wall cantilever structure according to claim 5, characterized in that: The outer surface of the cantilever beam is provided with a drip groove.

7. The existing highway retaining wall cantilever structure according to claim 1 is characterized in that: A contact platform is formed on one side of the cantilever beam close to the base plate. The contact platform is flush with the surface of the base plate. A panel layer is arranged on the base plate, and one side of the panel layer is seated on the contact platform.

8. The cantilever structure of an existing highway retaining wall according to claim 7, characterized in that: The thickness dimension of the panel layer is set to "H", the height difference between the abutment platform surface and the top surface of the cantilever beam is set to "h", and H>h is satisfied.

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