A method for paving eagle-beak shaped cap stones on high-speed railway platforms

Abstract

This invention provides a method for constructing beak-shaped capstones on high-speed railway platforms, overcoming the shortcomings of traditional methods without beak-shaped capstones, such as loose bonding layers, poor density, and low durability. It improves the quality and aesthetics of capstone paving, reduces the need for secondary treatment at the ends of the bonding layer, and effectively lowers construction costs. The method primarily involves laying a steel mesh on the surface of the platform structure layer, followed by pouring an integral concrete base layer and concrete curb.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to the field of high-speed railway platform capstone paving engineering, specifically to a construction method for paving eagle-beak shaped capstones on high-speed railway platforms. Background Technology

[0002] Currently, curved platforms are widely used in high-speed railway stations. The platform surface is basically made of washed and flamed granite, and the bonding layer of the platform surface is generally 3-5cm of 1:3 dry-mixed mortar. For example, a railway platform cap stone paving device disclosed in utility model patent (publication number CN216338800U) adopts the method of integrally pouring concrete foundation and then paving.

[0003] However, the traditional method of paving platform cap stones uses cap stones without eagle beak shapes. The mortar on the side of the platform cannot be intercepted, which easily causes the end bonding layer to become loose, hollow and fall off, and has poor durability and appearance. If square timber is used to support the dry mortar bonding layer at the end of the platform side, it is necessary to wait for the dry mortar to set before removing it, which results in a long construction period. Summary of the Invention

[0004] To overcome the problems existing in the current construction technology, this invention provides a method for paving eagle-beak shaped capstones on high-speed railway platforms. This method overcomes the defects of traditional construction without eagle-beak shaped capstones, such as loose bonding layer, poor density, and poor durability. It improves the quality and aesthetics of capstone paving, reduces the need for secondary treatment at the ends of the bonding layer, and effectively reduces the construction cost.

[0005] This invention is achieved through the following technical solution:

[0006] A method for paving eagle-beak shaped stone caps on high-speed railway platforms includes the following steps:

[0007] S1. Lay a steel mesh on the surface of the platform structure layer, place multiple concrete blocks on the left and right sides of the steel mesh, and fix the left and right sides of the steel mesh in the middle of the concrete blocks to ensure that there is a gap between the steel mesh and the platform structure layer.

[0008] S2. Fix the rear formwork of the reverse retaining wall to the outer facade of the platform structure layer, and place the front formwork of the reverse retaining wall on the top surface of the concrete pad block so that the steel mesh can extend into the cavity of the reverse retaining wall.

[0009] S3. Use 160mm slump concrete to pour the surface of the platform structure layer and the cavity of the inverted curb formwork to form a concrete cushion layer and concrete inverted curb that are poured as a whole.

[0010] S4. After the concrete inverted wall is formed, remove the inverted wall formwork and move to the next construction section to repeat steps S1-S3. Finally, complete the pouring of all the concrete foundation and concrete inverted wall of the platform.

[0011] S5. Lay a cement mortar bonding layer on the surface of the concrete pad and the concrete curb, and lay the beak-shaped cap stone on the cement mortar bonding layer so that the beak part of the beak-shaped cap stone matches the outline of the concrete curb.

[0012] Furthermore, in step S1, the height of the concrete block is 20-30mm.

[0013] Furthermore, the reverse retaining wall formwork includes a front formwork, a rear formwork, a left formwork, a right formwork, and a zigzag formwork. The front formwork, rear formwork, left formwork, and right formwork are spliced ​​together to form a cavity capable of pouring concrete. The bottom edge of the front formwork is higher than the bottom edge of the rear formwork. Both the front and rear formworks are L-shaped angle steel plates. The zigzag formwork is shaped like a zigzag line that matches the beak part of the beak-shaped cap stone. The zigzag formwork is fixed to the rear part of the inner cavity of the reverse retaining wall formwork.

[0014] Furthermore, in step S3, the thickness of the concrete cushion layer is 2-2.5 cm.

[0015] Furthermore, the length of the anti-sill template is 4-6m.

[0016] The beneficial effects achieved by this invention compared with the prior art are as follows:

[0017] 1. The high-speed railway platform eagle beak-shaped cap stone paving construction method of the present invention sets a steel mesh reinforcement layer on the end of the platform and sets a concrete back curb to ensure that the mortar of the cap stone bonding layer is dense, has better durability and strength, prevents the bonding layer from cracking and hollowing in the later stage or falling off locally due to the vibration of trains, and reduces the loosening and intrusion of the platform cap stone into the limit due to the vibration of train movement in the later stage.

[0018] The structure of the eagle-beak-shaped cap stone combined with the concrete inverted curb can ensure the overall linear effect of the platform and ensure that the water on the platform surface flows down the eagle beak, preventing water from intruding into the bonding layer and causing hollowing.

[0019] 2. The construction method of this invention solves the problems of loose, non-dense, poor durability, and easy cracking and falling off of the mortar bonding layer at the end of the platform; the concrete inverted curb forming device is easy to construct and avoids adding fixing points on the upper part of the platform, and can be fixed at the end by fixing parts. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the assembly of the anti-recessed template according to the present invention;

[0021] Figure 2This is a schematic diagram of the eagle-beak shaped cap stone paving construction method described in this invention;

[0022] Figure 3 This is a schematic diagram showing the completed construction of the present invention;

[0023] In the diagram: 1. Steel mesh, 2. Concrete pad, 3. Reverse curb formwork, 4. Fixing clamp, 5. Concrete reverse curb, 6. Cement mortar bonding layer, 7. Eagle beak shaped cap stone, 8. Eagle beak part. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] Traditional methods for paving platform capstones use capstones without a beak-shaped design. This results in mortar not being properly contained on the platform sides, easily leading to loose, hollow, and detached end bonding layers, as well as poor durability and aesthetic quality. This embodiment discloses a method for paving beak-shaped capstones on high-speed railway platforms, overcoming the above problems by using beak-shaped capstones, combined with... Figure 1-3 As shown, it mainly includes the following steps:

[0026] S1. Lay a steel mesh 1 on the surface of the platform structure layer. Place two 25mm high concrete blocks 2 on the left and right sides of the steel mesh 1 respectively. Tie the left and right sides of the steel mesh 1 to the middle of the concrete blocks 2 respectively to ensure that there is a gap between the steel mesh 1 and the platform structure layer.

[0027] S2. Construct the reverse retaining wall formwork 3. The reverse retaining wall formwork consists of a front formwork, a rear formwork, a left formwork, a right formwork, and a zigzag formwork. The front, rear, left, and right formworks are joined together using connecting plates to form a cavity for concrete pouring. The bottom edge of the front formwork is approximately 1.5cm higher than the bottom edge of the rear formwork. Both the front and rear formworks are L-shaped angle steel plates. The zigzag formwork is shaped like the beak of an eagle-beak-shaped capstone and is fixed to the rear of the inner cavity of the reverse retaining wall formwork. The reverse retaining wall formwork is used for pouring concrete reverse retaining walls. It has an overall length of 4.5m and can be used individually or multiple reverse retaining wall formworks can be horizontally connected and spliced ​​together as a single unit.

[0028] The rear template of the reverse retaining wall template 3 is fixed to the outer facade of the platform structure layer by fixing clamp 4. The front template of the reverse retaining wall template is placed on the top surface of the concrete pad block to achieve the positioning of the reverse retaining wall template, while ensuring that the steel mesh can extend into the cavity of the reverse retaining wall template. This design ensures that there is a part of the steel mesh in the concrete reverse retaining wall after pouring.

[0029] S3. Use 160mm slump concrete to pour concrete on the surface of the platform structure layer and the cavity of the inverted curb formwork to form a concrete cushion layer and concrete inverted curb 5 as a whole. The concrete cushion layer is 2cm thick and the concrete inverted curb 5 is 2cm wide and 2.5cm high.

[0030] S4. After the concrete inverted wall is formed, remove the inverted wall formwork and move to the next construction section to repeat steps S1-S3. Finally, complete the pouring of all the concrete foundation and concrete inverted wall of the platform.

[0031] S5. Lay a 1:2 cement mortar bonding layer on the surface of the concrete cushion and the concrete curb, and lay the beak-shaped cap stone on the cement mortar bonding layer 6 so that the beak part 8 of the beak-shaped cap stone 7 matches the outline of the concrete curb.

[0032] The eagle-beak shaped capstone paving construction method of the present invention involves setting a steel mesh reinforcement layer at the end of the platform and setting a concrete curb to ensure that the mortar of the capstone bonding layer is dense, durable and strong, preventing cracking and hollowing of the bonding layer or localized overall falling off due to train vibration, and reducing the risk of the capstone loosening and intrusion into the clearance due to train vibration. The structure of the eagle-beak shaped capstone combined with the concrete curb can ensure the overall linear effect of the platform and ensure that water flows down the platform surface along the eagle beak, avoiding water intrusion into the bonding layer and causing hollowing.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of them. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. Although the specific embodiments of the present invention have been described above, they are not intended to limit the protection scope of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A method for paving eagle-beak shaped cap stones on high-speed railway platforms, characterized in that, Includes the following steps: S1. Lay a steel mesh on the surface of the platform structure layer, place multiple concrete blocks on the left and right sides of the steel mesh, and fix the left and right sides of the steel mesh in the middle of the concrete blocks to ensure that there is a gap between the steel mesh and the platform structure layer. S2. Fix the rear formwork of the reverse retaining wall to the outer facade of the platform structure layer, and place the front formwork of the reverse retaining wall on the top surface of the concrete pad block so that the steel mesh can extend into the cavity of the reverse retaining wall. The reverse retaining wall formwork includes a front formwork, a rear formwork, a left formwork, a right formwork, and a zigzag formwork. The front formwork, rear formwork, left formwork, and right formwork are spliced ​​together to form a cavity that can be used to pour concrete. The bottom edge of the front formwork is higher than the bottom edge of the rear formwork. Both the front and rear formworks are L-shaped angle steel plates. The zigzag formwork is shaped like a zigzag that matches the beak part of the beak-shaped cap stone. The zigzag formwork is fixed to the rear part of the inner cavity of the reverse retaining wall formwork. S3. Use 160mm slump concrete to pour concrete onto the surface of the platform structure layer and the cavity of the inverted curb formwork to form a concrete cushion layer and concrete inverted curb that are poured as a whole. S4. After the concrete inverted wall is formed, remove the inverted wall formwork and move to the next construction section to repeat steps S1-S3. Finally, complete the pouring of all the concrete foundation and concrete inverted wall of the platform. S5. Lay a cement mortar bonding layer on the surface of the concrete pad and the concrete curb, and lay the beak-shaped cap stone on the cement mortar bonding layer so that the beak part of the beak-shaped cap stone matches the outline of the concrete curb.

2. The method for paving eagle-beak shaped cap stones on high-speed railway platforms according to claim 1, characterized in that, In step S1, the height of the concrete pad is 20-30mm.

3. The method for paving eagle-beak shaped cap stones on high-speed railway platforms according to claim 1, characterized in that, In step S3, the thickness of the concrete cushion layer is 2-2.5 cm.

4. The method for paving eagle-beak shaped cap stones on high-speed railway platforms according to any one of claims 1-3, characterized in that, The length of the inverted retaining wall template is 4-6m.

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