CN-121976435-A - Auxiliary scattered paving construction method for subway rail paving machine

CN121976435ACN 121976435 ACN121976435 ACN 121976435ACN-121976435-A

Abstract

The invention relates to the technical field of subway construction, in particular to a subway rail laying mechanical auxiliary scattered paving construction method. The method comprises the specific steps of S1, construction preparation, S2, installation of a running rail and a rail laying crane, S3, material lifting, S4, rail panel assembly and lifting, S5, installation of a track bed reinforcing steel bar net, S6, track state adjustment, S7, template installation, S8, pouring of track bed concrete, S9, maintenance and subsequent operation. Through setting up supporting operation platform, the whole process machinery auxiliary operation of all kinds of track laying machines of integration, realization from construction preparation, material handling, track panel equipment to the railway roadbed pouring, maintenance, solve the machine and spread the method to the place requirement high, can't be in the problem of complicated regional application, improve artifical scattered shop method manpower input simultaneously and big, the work efficiency is low, the quality is unstable, the drawback that cost is high and there is the potential safety hazard, the track laying construction demand under the adaptation construction period tension condition, compromise convenience and the standardly of construction, need not to rely on fixed track laying base can realize high-efficient track laying operation.

Inventors

SHI LIDAN
ZHANG MAOCHUN
MA QINGWEI
YUAN JIE
LIU ZHIBIAO
XIE WENQIANG
WANG YEHONG
JIN QIULI

Assignees

中国建设基础设施有限公司

Dates

Publication Date: 20260505
Application Date: 20260317

Claims (6)

1. A subway rail-laying mechanical auxiliary scattered paving construction method is characterized by comprising the following specific steps: S1, construction preparation, namely, compiling a track laying plan, carrying out track laying calculation, and carrying out steel bar lofting and processing in a track laying base; setting up an operation platform, wherein a track laying crane, a running track, a track support and a basic mark measuring assembly are arranged on the operation platform, the running track is laid on the track support, the track support is fixed on a tunnel bottom plate, and the track laying crane is carried on the running track and can move along the running track; S2, installing a running rail and a track laying crane, namely selecting a steel rail as the running rail, fixing a bottom plate of a track bracket on a bottom plate of a tunnel through an expansion screw, adjusting the height of the track bracket to a preset position, and fastening the running rail and an upper plate of the track bracket through bolts to ensure the running balance safety of the track laying crane on the running rail; S3, lifting materials, namely lifting and unloading the steel rail, the sleeper, the steel bar, the fastener and other materials to a shield wellhead through an automobile crane, vertically transporting the steel rail to a station bottom plate by matching with an off-road forklift, and then transferring various materials to corresponding positions in a tunnel through a track laying crane, wherein the steel rail is vertically lifted to the bottom of the shield well by adopting a single point and is sent into the tunnel by matching with the forklift; S4, assembling and lifting the track panel on site in a tunnel section according to a track allocation plan, wherein steel rails with length tolerance meeting requirements are selected for pairing in the assembling process, a spiral spike is sleeved with a gasket and coated with special grease, then a nylon sleeve is screwed in, an iron backing plate and a spring strip are installed according to standard requirements, and the sleeper spacing is divided by a long steel rule; s5, installing a ballast bed reinforcing steel bar net, namely binding the reinforcing steel bars formed by processing the track laying base into bundles, lifting the bundles to a laying section through a track laying crane, binding and welding in a tunnel, and ensuring that the longitudinal reinforcing steel bars are used as stray current drainage bars and form good electrical connection; S6, track state adjustment, namely performing rough adjustment, fine adjustment and fine adjustment on the erected track panel, and repeatedly adjusting according to the sequence of firstly adjusting the level and then adjusting the track gauge, firstly adjusting the base mark position and then adjusting the base mark, and firstly coarsening and then refining to ensure that the track panel precision meets the precision requirement after the ballastless track is paved; S7, installing the template along the track direction, ensuring that the template is straight and firm in reinforcement, and uniformly brushing a release agent before installing the template to avoid the pollution of the release agent to the steel bars; S8, pouring ballast bed concrete, namely conveying the ballast bed concrete into a hopper through a long chute, lifting the ballast bed concrete to a pouring place from a track laying, and pouring the ballast bed concrete into the hopper by a track laying crane after the strength of the ballast bed concrete reaches the design requirement along with the increase of pouring mileage; And S9, curing and subsequent operation, namely curing in time after the concrete is poured and finally cured, removing the steel rail support frame when the concrete strength reaches the preset strength, moving the track laying crane and the track to the next operation area after the track laying of one section is completed, and repeating the steps S4 to S8 until the whole section of track is laid.
2. The method for assisting in scattered paving construction of the subway rail paving machine according to claim 1, wherein in the step S2, a 24Kg/M steel rail is selected as a running rail, a bottom plate of a rail bracket is of an angle-adjustable structure, the distance between supporting points of the rail bracket is 1.2M, and an expansion screw is of a model M16.
3. The method for assisting in scattered paving construction of the subway rail paving machine according to claim 1, wherein in the step S3, the number of sleepers is not more than 12 each time, a steel wire rope or a hanging belt is adopted and an anti-abrasion measure is adopted during hoisting, and small semi-finished steel bars are hoisted by adopting a qualified bucket.
4. The method for assisting in scattered paving construction of subway rail paving machinery according to claim 1, wherein in step S4, the tolerance difference of the lengths of the steel rails selected for the same rail panel is not more than 3mm.
5. The method for assisting in scattered paving construction of subway rail laying machinery according to claim 1, wherein in the step S4, the steel rail supporting frames are arranged in the direction of a straight line segment vertical line and in the tangential direction of a curve segment vertical line, and when the sleeper and the supporting frames are overlapped with the reserved pipe ditches, the sleeper and the supporting frames are properly adjusted back and forth and the distance is kept uniform.
6. The method for assisting in scattered paving construction of the subway rail laying machine according to claim 1, wherein in the step S9, the steel rail supporting frame is removed when the concrete strength reaches 5 MPa.

Description

Auxiliary scattered paving construction method for subway rail paving machine Technical Field The invention relates to the technical field of subway construction, in particular to a subway rail laying mechanical auxiliary scattered paving construction method. Background At present, in urban rail transit track engineering, a rail laying mode which is widely applied is mainly an organic laying method and a manual scattered laying method. The machine laying method depends on a fixed track laying base, has higher construction efficiency, but has higher requirements on construction sites, and needs the conditions of continuous tunnel penetration, track panel well and the like. In complex construction areas such as old urban areas, newly built subway lines are often crossed and parallel with existing pipelines, and partial pipelines cannot be timely migrated due to factors such as cutting and changing procedures, land occupation planning and the like, so that tunnels are discontinuous, break points are more, and a track laying base is difficult to play a role. Under the condition, a manual scattered paving method is often needed, a large amount of manpower is needed to be input in the method, the construction efficiency is low, the construction quality is possibly influenced by the difference of manpower operation, meanwhile, the construction cost and the potential safety hazard are increased, and the rail paving construction requirement under the condition of short construction period is difficult to meet. Disclosure of Invention Aiming at the defects of the prior art, the invention aims to provide a subway rail laying mechanical auxiliary scattered paving construction method. The technical scheme adopted for solving the technical problems is as follows: The subway rail laying mechanical auxiliary scattered paving construction method comprises the following specific steps: s1, construction preparation, namely, compiling a track laying plan and carrying out track allocation calculation, carrying out steel bar lofting and processing in a track laying base, laying temporary facilities after handing over a processing site, carrying out rechecking measurement and basic mark measurement and completing construction technology intersection, and constructing an operation platform, wherein a track laying crane, a track running rail, a track support and a basic mark measurement assembly are arranged on the operation platform, the track running rail is laid on the track support, the track support is fixed on a tunnel bottom plate, and the track laying crane is carried on the track running rail and can move along the track running rail. S2, installing a running rail and a track laying crane, namely selecting a steel rail as the running rail, fixing a track support bottom plate on a tunnel bottom plate through an expansion screw, adjusting the height of the track support to a preset position, and fastening the running rail and a track support upper plate through bolts to ensure the running balance safety of the track laying crane on the running rail. S3, lifting materials, namely lifting and unloading the steel rail, the sleeper, the steel bar, the fastener and other materials to a shield wellhead through an automobile crane, vertically transporting the steel rail to a station bottom plate by matching with an off-road forklift, and then transferring various materials to corresponding positions in a tunnel through a track laying crane, wherein the steel rail is vertically lifted to the shield bottom hole by adopting a single point and is sent into the tunnel by matching with the forklift, the sleeper is integrally lifted, the steel bar is bundled and lifted, and the fastener and other small materials are lifted by using a lifting bucket. S4, assembling and lifting the track panel on site in a tunnel section according to a track allocation plan, wherein steel rails with length tolerance meeting requirements are selected for pairing in the assembling process, a spiral spike is sleeved with a gasket and coated with special grease, then the spiral spike is screwed into a nylon sleeve, an iron backing plate and a spring strip are installed according to standard requirements, the sleeper spacing is divided by a long steel rule, and after the track panel is assembled, the track panel is lifted to a working surface by two track laying cranes to be adjusted to be in position, and a steel rail supporting frame is installed and bolts of all parts are screwed. S5, installing a ballast bed reinforcing steel bar net, namely binding the reinforcing steel bars formed by processing the track laying base into bundles, lifting the bundles to a laying section through a track laying crane, binding and welding in a tunnel, and ensuring that the longitudinal reinforcing steel bars are used as stray current drainage bars and form good electrical connection. S6, track state adjustment, namely carrying out rough adjustment, fine adjustment and fine adj