Parallel construction method for ballastless track bed plate based on mobile factory mode

Abstract

This invention relates to the field of railway construction technology, specifically to a parallel construction method for ballastless track slabs based on a mobile factory model. The parallel construction method includes base plate construction and track slab construction. The beneficial effects are: based on the prefabrication technology of the construction structure, the proposed parallel construction method on a continuous working surface divides the construction process into a limited number of modules, and uses limited equipment to achieve simultaneous construction of different processes on three working surfaces, forming a continuous working surface. This greatly improves construction efficiency, reduces the waste of time in maintenance, assembly, binding and other processes during construction, and realizes a mobile factory-style parallel construction operation mode for different processes.

Description

Technical Field

[0001] This invention relates to the field of railway construction technology, specifically to a method for parallel construction of ballastless track slabs based on a mobile factory model. Background Technology

[0002] Existing track construction includes the construction of base slabs and track bed slabs. The construction process involves layout, laying of lower-level steel reinforcement, formwork installation, and pouring. Due to limitations in construction equipment and personnel, road construction can only be carried out section by section. The longest part of the construction process is the curing and shaping of concrete, resulting in low construction efficiency.

[0003] For equipment, prefabrication can reduce the number of personnel needed during construction and save time on assembly and binding processes to a certain extent. However, it is ultimately limited by the longest maintenance process, which prevents construction efficiency from being truly improved. Summary of the Invention

[0004] The purpose of this invention is to provide a parallel construction method for ballastless track slabs based on a mobile factory model, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A parallel construction method for ballastless track slabs based on a mobile factory model, the parallel construction method including base plate construction and track slab construction; the base plate construction includes the following steps: S1: Divide the work surface into three groups, namely the work surface M1 after concrete curing is completed, the work surface M2 during concrete curing, and the work surface M3 for construction. S2: Install moving tracks and moving work vehicles on the continuous working surface, prepare two sets of prefabricated base plate casting templates, and one set of built-in steel cages; S3: The already cast working surface M2 is in the concrete curing stage. A set of base plate casting formwork is used for support. The precast steel cage is hoisted to the working surface M3 using a mobile work vehicle. The base plate casting formwork on the working surface M1, which has already completed concrete curing, is removed and moved over the working surface M2. It is then hoisted to the working surface M3 by the mobile work vehicle to form a casting cavity and carry out the casting operation. S4: As the pouring is completed, the working surface moves forward. The original working surface M2 completes the curing task and forms a new working surface M1. The original working surface M3 completes the construction task and forms a new working surface M2. The working surface that moves forward forms a new working surface M3. The track bed slab construction includes the following steps: T1: Divide into three continuous working surfaces, namely N1, where concrete pouring is completed, the rail frame meets the requirements for dismantling, but the formwork has not yet met the requirements for dismantling; N2, where formwork construction is completed and the integrated rail frame assembly is to be installed; and N3, where formwork is to be installed. T2: Install mobile tracks and mobile work vehicles on the continuous working surface, prepare two sets of prefabricated track bed slab casting templates, and one set of built-in steel cages; T3: The rail frame on working surface N1 is dismantled and hoisted onto working surface N2 by a mobile work vehicle. After hoisting and precision adjustment, concrete is poured on working surface N2. The steel cage is hoisted onto working surface N3 by a mobile work vehicle, and the sleeper spacing device is used to lay and install the sleepers on working surface N3. T4: After the paving is completed, the concrete curing task of working surface N1 is completed. The working surface is moved forward, the track bed slab pouring formwork of working surface N1 is removed, and it is transported to working surface N3 by mobile work vehicle. After installation, the original working surface N3 forms a new working surface N2. After the original working surface N2 is poured, a new working surface N1 is formed. The working surface that moves forward forms a new working surface N3.

[0006] Preferably, the steel reinforcement cages built into the base plate and track bed plate are assembled from multiple sets of mesh modules, and the prefabrication between the mesh modules is achieved using a steel reinforcement operation vehicle.

[0007] Preferably, the rebar handling vehicle is equipped with a mesh storage platform and a processing platform. The rebar handling vehicle calls the mesh modules built into the mesh storage platform and assembles and binds the mesh modules on the processing platform.

[0008] Preferably, both the base plate casting template and the track bed slab casting template are prefabricated templates with magnetic connection. The templates are prefabricated and assembled using a template operation vehicle. After forming, they are hoisted and transported on a continuous working surface by a mobile operation vehicle.

[0009] Preferably, the mobile track is laid on both sides of the working surface and extends along the construction direction of the working surface. The mobile work vehicle is installed on the mobile track and is equipped with special lifting tools for hoisting formwork, steel cage and rail frame.

[0010] Compared with the prior art, the beneficial effects of the present invention are: This invention, based on prefabrication technology for construction structures, presents a parallel construction method on a continuous working surface. The construction process is divided into a limited number of modules, and three working surfaces are constructed simultaneously using limited equipment to form a continuous working surface. This greatly improves construction efficiency, reduces the waste of time in curing, assembly, and binding processes, and realizes a mobile factory-style parallel construction operation mode for different processes. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the parallel construction continuous operation surface of the base plate of the present invention; Figure 2 This is a schematic diagram of the parallel construction continuous working surface of the track bed slab according to the present invention. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0013] Please see Figure 1 As shown in the figure, the present invention provides a technical solution: A parallel construction method for ballastless track slabs based on a mobile factory model, comprising base plate construction and track slab construction; the base plate construction includes the following steps: S1: Divide the work surface into three groups, namely the work surface M1 after concrete curing is completed, the work surface M2 during concrete curing, and the work surface M3 for construction. S2: Install moving tracks and moving work vehicles on the continuous working surface, prepare two sets of prefabricated base plate casting templates, and one set of built-in steel cages; S3: The already cast working surface M2 is in the concrete curing stage. A set of base plate casting formwork is used for support. The precast steel cage is hoisted to the working surface M3 using a mobile work vehicle. The base plate casting formwork on the working surface M1, which has already completed concrete curing, is removed and moved over the working surface M2. It is then hoisted to the working surface M3 by the mobile work vehicle to form a casting cavity and carry out the casting operation. S4: As the pouring is completed, the working surface moves forward. The original working surface M2 completes the curing task and forms a new working surface M1. The original working surface M3 completes the construction task and forms a new working surface M2. The working surface that moves forward forms a new working surface M3. The track bed slab construction includes the following steps: T1: Divide into three continuous working surfaces, namely N1, where concrete pouring is completed, the rail frame meets the requirements for dismantling, but the formwork has not yet met the requirements for dismantling; N2, where formwork construction is completed and the integrated rail frame assembly is to be installed; and N3, where formwork is to be installed. T2: Install mobile tracks and mobile work vehicles on the continuous working surface, prepare two sets of prefabricated track bed slab casting templates, and one set of built-in steel cages; T3: The rail frame on working surface N1 is dismantled and hoisted onto working surface N2 by a mobile work vehicle. After hoisting and precision adjustment, concrete is poured on working surface N2. The steel cage is hoisted onto working surface N3 by a mobile work vehicle, and the sleeper spacing device is used to lay and install the sleepers on working surface N3. T4: After the paving is completed, the concrete curing task of working surface N1 is completed. The working surface is moved forward, the track bed slab pouring formwork of working surface N1 is removed, and it is transported to working surface N3 by mobile work vehicle. After installation, the original working surface N3 forms a new working surface N2. After the original working surface N2 is poured, a new working surface N1 is formed. The working surface that moves forward forms a new working surface N3.

[0014] The base plate and track slab are constructed using multiple sets of mesh modules for their built-in steel cages. These modules are prefabricated using a steel reinforcement vehicle. The steel reinforcement vehicle is equipped with a mesh storage platform and a processing platform. It uses the mesh modules stored in the storage platform and assembles and binds them on the processing platform. Both the base plate and track slab casting templates are magnetically connected prefabricated templates. These are prefabricated and assembled using a template vehicle. After forming, they are hoisted and transported across the continuous working surface using a mobile work vehicle. A mobile track is laid on both sides of the working surface, extending along the construction direction. The mobile work vehicle is mounted on the track and equipped with specialized lifting tools for hoisting templates, steel cages, and track panels.

[0015] Work process: Base plate construction: During the construction process, three continuous construction working surfaces are divided. The length of a single working surface can be reasonably determined according to the size of the steel cage and the pouring formwork. The three working surfaces are: working surface M1 after concrete curing, working surface M2 during concrete curing, and working surface M3 for construction.

[0016] During the curing period of work surface M2, construction work is carried out on work surface M3. The steel cage is hoisted and installed using a mobile work vehicle. The formwork on work surface M1, which has been cured, is removed and transported to the position of work surface M3. After the formwork is installed, concrete is poured. After the pouring is completed, the work surface is advanced. The original work surface M1 is demolished to form the completed section of construction. During the construction of work surface M3, the original work surface M2 gradually completes the curing work and then forms a new work surface M1. After the original work surface M3 is poured, it is in the concrete solidification and curing stage, forming a new work surface M2. The work surface that is advanced forward forms the new work surface M3 that needs to be constructed.

[0017] Similarly, for the track bed slab, the following approach was used: During construction, the work was divided into three continuous working surfaces. The length of each working surface can be reasonably determined according to the size of the track frame. The three working surfaces are: working surface N1 where the template has not yet reached the removal requirements; working surface N2 where the integrated track frame group is to be installed; and working surface N3 where the template is to be installed.

[0018] During construction, the detachable rail frame on working surface N1 is removed and transported to working surface N2 using a mobile work vehicle for installation. After installation, concrete is poured, resulting in a new working surface N1 where the formwork has not been removed and the concrete is awaiting curing. After the construction of work surface N2 is completed, the concrete curing work of work surface N1 is completed and the formwork is removed, forming the completed construction section; The equipment is hoisted and transported to work surface N3. After the template is installed, a new work surface N2 is formed, where the rail panel is ready for installation. The advancing work surface forms a new work surface N3, where formwork, rebar cages, and rail frames are to be installed.

[0019] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for parallel construction of ballastless track slabs based on a mobile factory model, characterized in that: The parallel construction method includes base plate construction and track bed slab construction; the base plate construction includes the following steps: S1: Divide the work surface into three groups, namely the work surface M1 after concrete curing is completed, the work surface M2 during concrete curing, and the work surface M3 for construction. S2: Install moving tracks and moving work vehicles on the continuous working surface, prepare two sets of prefabricated base plate casting templates, and one set of built-in steel cages; S3: The already cast working surface M2 is in the concrete curing stage. A set of base plate casting formwork is used for support. The precast steel cage is hoisted to the working surface M3 using a mobile work vehicle. The base plate casting formwork on the working surface M1, which has already completed concrete curing, is removed and moved over the working surface M2. It is then hoisted to the working surface M3 by the mobile work vehicle to form a casting cavity and carry out the casting operation. S4: As the pouring is completed, the working surface moves forward. The original working surface M2 completes the curing task and forms a new working surface M1. The original working surface M3 completes the construction task and forms a new working surface M2. The working surface that moves forward forms a new working surface M3. The track bed slab construction includes the following steps: T1: Divide into three continuous working surfaces, namely N1, where concrete pouring is completed, the rail frame meets the requirements for dismantling, but the formwork has not yet met the requirements for dismantling; N2, where formwork construction is completed and the integrated rail frame assembly is to be installed; and N3, where formwork is to be installed. T2: Install mobile tracks and mobile work vehicles on the continuous working surface, prepare two sets of prefabricated track bed slab casting templates, and one set of built-in steel cages; T3: The rail frame on working surface N1 is dismantled and hoisted onto working surface N2 by a mobile work vehicle. After hoisting and precision adjustment, concrete is poured on working surface N2. The steel cage is hoisted onto working surface N3 by a mobile work vehicle, and the sleeper spacing device is used to lay and install the sleepers on working surface N3. T4: After the paving is completed, the concrete curing task of working surface N1 is completed. The working surface is moved forward, the track bed slab pouring formwork of working surface N1 is removed, and it is transported to working surface N3 by mobile work vehicle. After installation, the original working surface N3 forms a new working surface N2. After the original working surface N2 is poured, a new working surface N1 is formed. The working surface that moves forward forms a new working surface N3.

2. The parallel construction method for ballastless track slabs based on a mobile factory model according to claim 1, characterized in that: The steel reinforcement cages built into the base plate and track bed plate are assembled from multiple sets of mesh modules, and the prefabrication between the mesh modules is achieved using a steel reinforcement operation vehicle.

3. The parallel construction method for ballastless track slabs based on a mobile factory model according to claim 2, characterized in that: The rebar handling vehicle is equipped with a mesh storage platform and a processing platform. The rebar handling vehicle calls the mesh modules built into the mesh storage platform and assembles and binds the mesh modules on the processing platform.

4. The parallel construction method for ballastless track slabs based on a mobile factory mode according to claim 1, characterized in that: Both the base plate casting template and the track bed slab casting template are prefabricated templates with magnetic connection. The templates are prefabricated and assembled using a template operation vehicle. After forming, they are hoisted and transported on a continuous working surface by a mobile operation vehicle.

5. The parallel construction method for ballastless track slabs based on a mobile factory mode according to claim 1, characterized in that: The mobile track is laid on both sides of the working surface and extends along the construction direction of the working surface. The mobile work vehicle is installed on the mobile track and is equipped with special lifting tools for hoisting formwork, steel cages and rail frames.

Images