Railing board replacement structure of operation line

Abstract

The utility model relates to the technical field of rail transit breast boards, in particular to a breast board replacement structure of an operation line, which is characterized in that newly-arranged stand columns and newly-arranged breast boards are arranged at the positions between the existing breast boards with diseases in a replacement manner, the newly-arranged stand columns are connected with a bridge floor, and the newly-arranged breast boards are connected with the bridge floor. The newly-arranged breast boards comprise first prefabricated breast boards and second prefabricated breast boards, wherein the first prefabricated breast boards and the newly-arranged stand column are poured into an integral structure, and the second prefabricated breast boards are assembled between the first prefabricated breast boards on the two sides. The utility model has the advantages that: 1) the existing cable bracket is not influenced in the replacement process, and the cable bracket can be switched after a new breast board upright post is mounted, so that the influence on the operation is small; the sound barrier has the advantages of saving the overhaul cost of the sound barrier in the later period, not increasing the load of the main body structure, meeting the environment requirement in the later period, improving the stress requirement of the sound barrier, achieving the same service life as the main body structure, avoiding the replacement in the later period, and facilitating the installation of operation lines without mechanical operation.

Description

Technical Field

[0001] This utility model relates to the field of rail transit guardrail technology, specifically to a guardrail replacement structure for an operating line. Background Technology

[0002] As rail transit operations continue, defects are inevitably discovered in the railings of existing lines during maintenance. Generally, existing lines commonly use cast-in-place thin-walled structures, which are inherently difficult to guarantee in terms of construction quality. Moreover, after long-term operation, the structures suffer from severe damage and exposed reinforcement, and the external drip edges often fall off, damaging vehicles on the ground and causing property damage. Summary of the Invention

[0003] The purpose of this utility model is to address the shortcomings of the existing technology by providing a barrier replacement structure for operating lines. Without affecting rail transit operations, it uses segmented prefabricated thin-walled ultra-high-strength material barriers to replace barriers that have exceeded their service life, are severely damaged, and pose a safety hazard of falling. Simultaneously, sound barrier embedded parts are installed to save on investment in later sound barrier overhauls.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A railing replacement structure for an operating route is used to replace existing railings that have exceeded their service life, are severely damaged, and pose a safety hazard of falling. The existing railings are provided with existing posts. The structure is characterized in that: new posts and new railings are installed at the positions between the damaged existing railings, wherein the new posts are connected to the bridge deck, and the new railings include a first precast railing that is cast integrally with the new posts and a second precast railing assembled between the first precast railings on both sides.

[0006] The newly installed railing has pre-embedded sound barrier components for connection with the sound barrier.

[0007] The newly erected columns are positioned differently from the existing columns.

[0008] The newly installed railing has a wire mesh installed inside, and the wire mesh is partially cantilevered outside the bridge cantilever as a drip structure.

[0009] The newly erected columns are prefabricated columns, and the bridge deck is equipped with column reinforcement bars. The prefabricated columns are located at the positions where the column reinforcement bars are arranged.

[0010] The precast columns have a hollow cross section and are connected to the bridge deck by post-cast ultra-high strength concrete.

[0011] The precast column can be divided into several precast column segments along its height direction, and several precast column segments are assembled to form the precast column.

[0012] The first prefabricated balustrade panel and the second prefabricated balustrade panel of the newly erected column are connected by a panel assembly joint.

[0013] Advantages of this utility model:

[0014] 1) The replacement is carried out during the end of the operation period, and the new columns are staggered from the existing columns. The replacement process does not affect the existing cable supports. The cable supports can be switched after the new railing columns are installed, which has little impact on operations.

[0015] 2) The newly replaced railings can be equipped with sound barrier embedded parts at the same time, which can be carried out at the same time as the major repair of the sound barrier, saving the cost of the later major repair of the sound barrier.

[0016] 3) The newly replaced parapets are prefabricated and made of ultra-high strength materials. They do not increase the load on the main structure, but meet the stress requirements of raising the sound barrier in the future environmental requirements. Their durability can reach the same lifespan as the main structure, avoiding the need for replacement again in the future.

[0017] 4) A single prefabricated column can be divided into 3 or more pieces in the height direction, and the weight of a single piece can be controlled within 60kg, which facilitates installation in operating lines where mechanical operation is lacking. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0019] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art:

[0020] like Figure 1 As shown in the figure, numbers 1-7 represent: existing column 1, existing balustrade 2, newly erected column 3, first precast balustrade 4, second precast balustrade 5, slab assembly joint 6, and column rebar 7.

[0021] Example: Figure 1 As shown, the guardrail replacement structure of the operating line in this embodiment is used to replace guardrails that have exceeded their service life, are severely damaged and pose a safety hazard of falling, and can simultaneously install sound barrier embedded parts.

[0022] Specifically, such as Figure 1 As shown, in this embodiment, the guardrail replacement structure for the operating route is set at the location where the existing pillar 1 and existing guardrail 2 are damaged. The damaged locations include various situations where the guardrail needs to be replaced, such as when it has exceeded its service life or when it is severely damaged and poses a safety hazard due to falling.

[0023] A new column 3 and a precast balustrade structure consisting of a first precast balustrade 4 and a second precast balustrade 5 are provided between the existing column 1 and the existing balustrade 2. The first precast balustrade 4 and the new column 3 form an integral precast structure, while the second precast balustrade 5 is a precast balustrade installed between the first precast balustrade 4 on both sides.

[0024] In this embodiment, column anchoring 7 is installed on the bridge deck, corresponding to the location of the newly installed column 3. The newly installed column 3 is staggered from the existing column 1, so it does not affect the existing cable support during construction. During construction, the newly installed column 3 adopts a 2cm thick hollow section, and no formwork is required on site. It is placed at the location of the column anchoring 7, and ultra-high strength concrete is poured into the hollow section to connect it to the bridge deck.

[0025] In this embodiment, the overall structure composed of the first prefabricated guardrail 4 and the prefabricated column 3 can be prefabricated in sections. It can be divided into 3 or more sections in the height direction, and the weight of a single section can be controlled to 60kg, which is convenient for installation under the condition of lack of mechanical operation on the operating line.

[0026] In this embodiment, the parapet replacement structure only connects the precast column 3 to the post-cast bridge deck. The precast panels are directly connected by post-casting or welding of weathering steel components through two pre-reserved 10cm high hollow grooves at the top and bottom.

[0027] In this embodiment, the first precast guardrail 4 and the second precast guardrail 5 are 4cm thick, and 3mm steel wire mesh is installed inside the guardrail, with 2cm of the mesh cantilevered outside the bridge cantilever as a drip structure.

[0028] In this embodiment, the sound barrier embedded parts can be installed simultaneously on the newly replaced barrier plate, which can be carried out at the same time as the major repair of the sound barrier, saving the cost of the later major repair of the sound barrier.

[0029] The newly replaced barriers are prefabricated and assembled using ultra-high strength materials. They do not increase the load on the main structure but meet the stress requirements for raising the sound barrier in the future, and their durability can reach the same lifespan as the main structure, avoiding the need for replacement again later.

[0030] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A replacement structure for a guardrail on an operational route, used to replace existing guardrails that have exceeded their service life, are severely damaged, and pose a safety hazard due to falling off, wherein the existing guardrails are provided with existing posts, characterized in that: New pillars and new railings are installed to replace the existing railings where damage has occurred. The new pillars are connected to the bridge deck, and the new railings include a first precast railing cast integrally with the new pillars and a second precast railing assembled between the first precast railings on both sides. The new pillars are staggered from the existing pillars.

2. The side panel replacement structure for an operating route according to claim 1, characterized in that: The newly installed railing has pre-embedded sound barrier components for connection with the sound barrier.

3. The side panel replacement structure for an operating route according to claim 1, characterized in that: The newly installed railing has a wire mesh inside, and the part of the newly installed railing is cantilevered outside the bridge cantilever as a drip structure.

4. The side panel replacement structure for an operating route according to claim 1, characterized in that: The newly erected columns are prefabricated columns, and the bridge deck is equipped with column reinforcement bars. The prefabricated columns are located at the positions where the column reinforcement bars are arranged.

5. The side panel replacement structure for an operating route according to claim 4, characterized in that: The precast columns have a hollow cross section and are connected to the bridge deck by post-cast ultra-high strength concrete.

6. The side panel replacement structure for an operating route according to claim 4, characterized in that: The precast column can be divided into several precast column segments along its height direction, and several precast column segments are assembled to form the precast column.

7. The guardrail replacement structure for an operating route according to claim 1, characterized in that: The first prefabricated balustrade panel and the second prefabricated balustrade panel of the newly erected column are connected by a panel assembly joint.

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