Subway station TBM marshalling train rail area lining construction formwork supporting system

Abstract

The utility model discloses a lining construction formwork supporting system for a TBM marshalling train rail-mounted area of a subway station. The device comprises a movable door frame and a full disc buckle type scaffold, the movable door frame is arranged in a rail-mounted area in a crossing mode and comprises a plurality of door-type steel frames which are arranged at intervals and connected into a whole, lower cross beams are arranged on the lower portions of stand columns on the two sides of the movable door frame, and H-shaped rail wheels are arranged on the lower portions of the lower cross beams. The movable gantry is movably arranged on gantry steel rails arranged on the two sides of a track area through H-shaped track wheels, a plurality of inclined struts are arranged at the bottoms of the two sides of the movable gantry at intervals, one end of each inclined strut is fixedly connected with a lower cross beam of the movable gantry, and the other end of each inclined strut is fixed to the ground through two reinforcing steel bars which are 25 mm in diameter and implanted into a hardened face. The all-round disc buckle type scaffold is erected on the outer side of the movable portal frame, the all-round disc buckle type scaffold in the rail-mounted area range is located on an upper cross beam of the portal steel frame, and formworks at the position of a station side wall are horizontally and oppositely supported through steel pipes.

Description

Technical Field

[0001] The utility model relates to a template support system for lining construction of a track area of a TBM marshaling train in a subway station, belonging to the technical field of subway station construction. Background Art

[0002] Traditional subway station lining construction adopts the construction scheme of erecting full-bridge scaffolding. There are the following construction difficulties when erecting full-bridge scaffolding:

[0003] (1) During the station lining construction, adjacent tunnels are often under construction at the same time. Rail cars used to transport materials and slag for TBM (shield boring) excavation need to pass through the station internal structure construction area. That is, the movement of rail cars and the construction of the main structure of the secondary lining (side walls, columns, rail top air ducts, etc.) are intersected. During the construction process, cross-track operations are carried out, which makes it very easy for locomotives to hit people. At the same time, falling objects from station structure construction falling into the track area can easily cause safety accidents such as train derailment.

[0004] (2) In traditional full-floor scaffolding construction, the track area needs to be closed when pouring concrete, which hinders tunnel excavation and cannot guarantee the cross-construction schedule, resulting in high construction pressure and high safety risks. Utility Model Content

[0005] In response to the above-mentioned defects in the existing technology, the utility model provides a subway station TBM train track area lining construction formwork support system that can improve the construction efficiency and construction safety of subway stations. It can safely isolate the track area, meet the requirements of simultaneous tunnel excavation construction, and does not require frequent installation and disassembly, with high turnover efficiency and fast construction speed.

[0006] The utility model is realized through the following technical scheme: a formwork support system for lining construction of track area of TBM marshaling train in a subway station, characterized in that: it includes a movable gantry and a full-height disc-type scaffolding, the movable gantry is arranged across the track area, the movable gantry includes a plurality of gantry steel frames arranged at intervals and connected as one, the lower parts of the columns on both sides of the movable gantry are provided with lower cross beams, the lower parts of the lower cross beams are provided with H-shaped rail wheels, the movable gantry is movably arranged on the gantry rails arranged on both sides of the track area through the H-shaped rail wheels, a plurality of diagonal braces are arranged at intervals on the bottom of both sides of the movable gantry, one end of the diagonal brace is fixedly connected to the lower cross beam of the movable gantry, and the other end is fixed to the ground by two steel bars with a diameter of 25 mm and implanted in a hardened surface, the full-height disc-type scaffolding is erected on the outside of the movable gantry, the full-height disc-type scaffolding in the track area is located on the upper cross beam of the gantry steel frame, and the formwork at the side wall of the station is horizontally braced by steel pipes.

[0007] This utility model utilizes a mobile gantry to safely isolate the track area from the station structure construction area, ensuring the safety of construction personnel and vehicles. Once the structural concrete reaches the design strength, only the scaffolding is removed, freeing the mobile gantry's fixed structure. The gantry can then be towed along the gantry rails to the next construction location for the next slab structure by train or electric vehicle, significantly improving construction efficiency. Multiple diagonal braces installed at the bottom of the mobile gantry secure it and ensure safety during concrete pouring.

[0008] Furthermore, in order to share the horizontal pressure supported on the mobile gantry and ensure the stability of the mobile gantry, a plurality of steel pipe diagonal braces supporting the side wall and the ground are arranged along the longitudinal intervals at the lower part of the station side wall. The steel pipe diagonal braces are connected to the vertical poles of the full-floor buckle scaffolding with fasteners.

[0009] Furthermore, in order to ensure the structural strength of the movable gantry, the gantry steel frame adopts I22a I-steel, and the longitudinal spacing of the gantry steel frame is 0.6m; at least two channel steels are used to connect and fix the columns of the gantry steel frame.

[0010] Furthermore, the lower cross beam is made of 25# double-jointed channel steel.

[0011] Furthermore, a group of H-shaped rail wheels is provided every 3 meters at the lower part of the lower cross beam.

[0012] Furthermore, to ensure construction safety, the sides and top of the movable gantry are covered with a dense mesh of steel wire.

[0013] Furthermore, in order to ensure that the mobile gantry is reliably fixed, the diagonal braces set at the bottom of both sides of the mobile gantry are made of 20# I-steel, and the depth of the steel bars for fixing the diagonal braces embedded in the hardened surface is not less than 30cm.

[0014] Furthermore, a safety distance of 300 mm is left between the movable gantry and both sides of the marshalling train, and a safety distance of 500 mm is left between the movable gantry and the top of the marshalling train.

[0015] Furthermore, a second disc-type scaffolding is filled on the outside of the marshalling train in a movable gantry across the track area of the single-track marshalling train. The horizontal distance × vertical distance × step distance of the second disc-type scaffolding is: 0.9m × 0.6m × 1.5m.

[0016] The beneficial effects of the utility model are as follows: the utility model has a simple structure, adopts a mobile door frame + full-floor buckle scaffolding combined formwork support system to construct the lower side wall and middle plate structure within the track area of the subway station TBM marshalling train, the support system structure design is reliable, and the construction safety is high; by arranging a mobile door frame in the track area, the track area can be separated from the station structure construction area, the track area can be safely isolated, the tunnel excavation and the station structure can be cross-constructed, which can effectively ensure the safety of construction personnel and driving, and can effectively solve the high safety risk of cross-construction of tunnel excavation and station structure. , the problem of difficulty in meeting the construction schedule; the mobile gantry can move along the gantry rails set on both sides of the track area. After the structural concrete strength reaches the design requirements, only the scaffolding needs to be removed and the fixed structure of the mobile gantry needs to be released. The mobile gantry can be pulled along the gantry rails to the next construction location for the next plate structure construction by train or electric vehicle. It is easy to move and has a fast construction speed, which can greatly improve the construction efficiency and reduce the workload of scaffolding erection and dismantling. Moreover, the mobile gantry only needs to be erected once, which not only saves the amount of steel compared to the fixed gantry, but also does not require repeated installation and dismantling during the construction process, saving labor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 It is a cross-sectional schematic diagram of the movable door frame in the utility model;

[0019] Figure 3 yes Figure 2 An enlarged schematic diagram of part D in FIG;

[0020] Figure 4 yes Figure 2 An enlarged schematic diagram of part C in FIG;

[0021] Figure 5 yes Figure 2 An enlarged schematic diagram of part A in FIG;

[0022] Figure 6 is a cross-sectional view of a movable gantry when a single-track train is formed in a specific embodiment;

[0023] Figure 7 is a cross-sectional view of a movable gantry when a double-track train is formed in a specific embodiment;

[0024] In the figure, 1. Mobile gantry, 1-1. Gantry steel frame, 1-1-1. Column of gantry steel frame, 1-1-2. Upper crossbeam of gantry steel frame, 1-2. Channel steel, 1-3. Lower crossbeam, 1-4. H-type track wheel, 2. Full-floor interlocking scaffolding, 3. Train assembly, 4. Side wall, 5. Middle plate, 6. Steel pipe, 7. Steel pipe diagonal brace, 8. Gantry rail, 9. Diagonal brace, 10. Steel bars embedded in the ground, 11. Second interlocking scaffolding. DETAILED DESCRIPTION

[0025] The present invention will be further described below by way of non-limiting embodiments and in conjunction with the accompanying drawings:

[0026] As shown in the accompanying drawings, a formwork support system for lining construction in the track area of a subway station TBM train marshaling system comprises a mobile gantry 1 and a full-height, interlocking scaffolding 2. The mobile gantry 1 spans the track area and is 18m long, 4.86m wide, and 3.4m high. It comprises several spaced-apart, integrated portal steel frames 1-1. The columns 1-1-1 and upper crossbeams 1-1-2 comprised of the portal steel frames 1-1 are both constructed from I22a I-beams. The columns 1-1-1 and upper crossbeams 1-1-2 are connected using M22 bolts, with 10mm steel plates welded at the joints. The portal steel frames 1-1 are spaced 0.6m apart in the longitudinal direction. The columns 1-1-1 on either side are connected and secured by at least two 10# channel steels 1-2, which are arranged symmetrically. A lower crossbeam 1-3 is provided at the lower portion of the columns on both sides of the mobile gantry 1. The lower crossbeam 1-3 is made of 25# double-jointed channel steel. The lower end of the column 1-1-1 of each gantry steel frame 1-1 is welded to the lower crossbeam 1-3. H-shaped rail wheels 1-4 are provided at the lower portion of the lower crossbeam 1-3, with a set of H-shaped rail wheels 1-4 provided every 3 meters. Gantry rails 8 are provided on both sides of the track area. The gantry rails 8 are fixed to the cushion layer using φ25 threaded steel anchors, and the anchors are embedded 300mm into the cushion layer. The mobile gantry 1 is movably provided on the gantry rails 8 via its H-shaped rail wheels 1-4. The sides and top of the mobile gantry 1 are covered with dense wire mesh for protection. The dense wire mesh is not shown in the drawings of this embodiment. Multiple diagonal braces 9 are installed at intervals on the bottom of both sides of the mobile portal frame 1, with one brace 9 installed every 1.2 meters. The braces 9 are made of 20# I-beams. One end of the brace 9 is welded to the lower crossbeam 1-3 of the mobile portal frame 1, and the other end is fixed to the ground by two 25mm diameter steel bars 10 embedded in the hardened surface. The steel bars 10 are welded to the lower ends of the braces 9, and the depth of the steel bars 10 embedded in the hardened surface is not less than 30cm. When pouring concrete, to ensure uniform force on the lower crossbeam, square timber can be used to fill the gap between the lower crossbeam and the ground below the lower crossbeam except for the area of the H-shaped track wheel. A full-height interlocking scaffolding 2 is erected on the outside of the mobile portal frame 1 as a support system for the track top air duct, middle plate, and side wall formwork. The full-height interlocking scaffolding in the track area is located on the upper crossbeam of the portal steel frame. The full-floor interlocking scaffolding 2 utilizes φ60 x 3.2mm interlocking scaffolding, with a horizontal, vertical, and step-over distance of 0.9m x 0.6m x 1.5m. The formwork at the station's side walls utilizes horizontal bracing with multiple steel pipes 6. To distribute the horizontal pressure on the portal steel frame columns and ensure portal stability, multiple steel pipe diagonal braces 7 are installed longitudinally along the lower portion of the station side walls, supporting the side wall and the ground. These braces are connected to the full-floor interlocking scaffolding with fasteners. These braces utilize φ48.3mm x 3.6mm steel pipes, which resist lateral pressure from the side walls.

[0027] The movable gantry 1 is divided into single-line and double-line according to the TBM train running line, and the size remains unchanged. To ensure the safety of TBM train operation, a safety distance of 300mm is left between the movable gantry 1 and the two sides of the train, and a safety distance of 500mm is left between the movable gantry 1 and the top of the train. For the single-line train support system, a second disc-type scaffolding 11 (as shown in the attached figure) is filled on the outside of the train in the movable gantry 1 that spans the track area of the single-line train. Figure 6 As shown), the horizontal distance × vertical distance × step distance of the second coiled scaffold 11 is: 0.9m×0.6m×1.5m.

[0028] The other templates in this embodiment are all set up using existing technologies and will not be described in detail here.

[0029] This utility model uses a combined formwork support system of a mobile gantry and a full-height, interlocking scaffolding to construct the lower side walls and middle plate structures within the track area of a subway station TBM train. The support system is reliable and construction safety is high. By installing a mobile gantry in the track area, the track area can be separated from the station structure construction area, allowing tunnel excavation and station structure construction to be carried out in parallel, effectively ensuring the safety of construction personnel and vehicles. After the structural concrete strength reaches the design requirements, the scaffolding is removed, and the fixed structure of the mobile gantry is released. The mobile gantry 1 can then be towed along the gantry rails 8 to the next construction location by train, battery car, etc. for the next plate structure construction. The convenient movement can greatly improve construction efficiency.

[0030] The other parts of this embodiment are all existing technologies and will not be described in detail here.

Claims

1. A formwork support system for lining construction in the track area of a TBM train at a subway station, characterized by: It includes a movable gantry and a full-height interlocking scaffolding, the movable gantry is arranged across the track area, the movable gantry includes several gantry steel frames arranged at intervals and connected as one, the lower parts of the columns on both sides of the movable gantry are provided with lower cross beams, the lower parts of the lower cross beams are provided with H-shaped rail wheels, the movable gantry is movably arranged on the gantry rails arranged on both sides of the track area through the H-shaped rail wheels, a plurality of diagonal braces are arranged at intervals on the bottom of both sides of the movable gantry, one end of the diagonal brace is fixedly connected to the lower cross beam of the movable gantry, and the other end is fixed to the ground by two steel bars with a diameter of 25 mm and implanted in the hardened surface, the full-height interlocking scaffolding is erected on the outside of the movable gantry, the full-height interlocking scaffolding in the track area is located on the upper cross beam of the gantry steel frame, and the template at the side wall of the station adopts horizontal steel pipe bracing.

2. The formwork support system for lining construction in the track area of a TBM train in a subway station according to claim 1 is characterized by: A plurality of steel pipe diagonal braces supporting the side wall and the ground are arranged at longitudinal intervals along the lower part of the station side wall. The steel pipe diagonal braces are connected to the full-floor buckle type scaffolding by fasteners.

3. The formwork support system for lining construction in the track area of a TBM train in a subway station according to claim 1 is characterized by: The portal steel frame adopts I22a I-steel, and the longitudinal spacing of the portal steel frame is 0.6m; the columns of the portal steel frame are connected and fixed by at least two channel steels.

4. The formwork support system for lining construction in the track area of a TBM train in a subway station according to claim 3 is characterized by: The lower cross beam is made of 25# double-jointed channel steel.

5. The formwork support system for lining construction in the track area of a TBM train in a subway station according to claim 4 is characterized by: A set of H-shaped rail wheels is arranged every 3m at the lower part of the lower cross beam.

6. The formwork support system for lining construction in the track area of a TBM train in a subway station according to claim 1 is characterized by: The sides and top of the movable door frame are covered with dense steel wire meshes.

7. The formwork support system for lining construction in the track area of a TBM train in a subway station according to claim 1, 2, 3, 4, 5, or 6, is characterized by: The diagonal braces set at the bottom of both sides of the mobile gantry are made of 20# I-steel, and the steel bars for fixing the diagonal braces are embedded in the hardened surface to a depth of not less than 30cm.

8. The formwork support system for lining construction in the track area of a TBM train in a subway station according to claim 1, 2, 3, 4, 5, or 6, characterized in that: A safety distance of 300 mm is left between the movable gantry and both sides of the marshalling train, and a safety distance of 500 mm is left between the movable gantry and the top of the marshalling train.

9. The formwork support system for lining construction in the track area of a TBM train in a subway station according to claim 1, 2, 3, 4, 5, or 6, characterized in that: The movable gantry is installed across the track area of the single-track marshalling train, and the outside of the marshalling train is filled with a second disc-type scaffolding. The horizontal distance × vertical distance × step distance of the second disc-type scaffolding is: 0.9m × 0.6m × 1.5m.

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