Construction method based on high-speed rail station building cast-in-place floor slab quick release platform

Abstract

The invention relates to a construction method based on a high-speed rail station building cast-in-place floor slab quick-release platform, which comprises the following steps: S1, constructing a plane control grid, dividing construction sections, configuring two complete quick-release platforms on a first construction section and a second construction section, configuring a cross-shaped quick-release platform on a third construction section, and constructing a plane control grid; s2, transferring branch truss platform components in other assembly areas from the first construction section to a third construction section until the concrete strength reaches a preset value of a design strength percentage; s3, the cross-shaped quick-release platform of the first construction section is transferred to a fourth construction section, and when the concrete strength of the second construction section reaches the preset value of the design strength percentage, branch truss platform assemblies of other assembly areas are transferred to the fourth construction section from the second construction section; and S4, according to the construction steps of S2-S3, construction of a subsequent construction section is completed. The construction method is beneficial to the flow construction process of the cast-in-place floor of the waiting layer with larger specifications.

Description

Technical Field

[0001] The present invention relates to the field of building construction, and in particular to a construction method based on a quick-disassembly platform for cast-in-place floor slabs of a high-speed railway station building. Background Art

[0002] The waiting floor of a large high-speed railway station is usually an open space of one whole floor, and the cast-in-place floor slabs used therein are of relatively large specifications, such as the Chinese invention patent application publication number: CN 104895314 A A truss platform for high-space roof concrete construction; it includes a truss support iron piece, a steel bracket is fixedly connected to the truss support iron piece, a track is installed on the steel bracket, a steel frame truss is installed on the track, the steel frame truss can slide on the track, a pad is laid on the steel frame truss, and full-floor racks, supporting purlins and formwork are set up on the pad. It is a whole truss platform that moves along the track, and a slipform construction method is used to cast concrete one by one in the construction area. The specifications of the truss platform used in its construction method are limited by the tracks on both sides, and the large truss platform has a large bending moment in the middle, which is not conducive to being supported only by the tracks on both sides. Summary of the invention

[0003] The purpose of the present invention is to provide a construction method based on a quick-disassembly platform of a cast-in-place floor of a high-speed railway station, which is conducive to the continuous construction of cast-in-place floors of waiting floors with larger specifications. The method first forms a cross frame of a formwork truss platform, and then assembles other truss units one by one. A plurality of cross truss platforms are arranged according to grid points, and then other truss platforms are assembled, and rods are embedded, which is conducive to the construction of a truss platform with larger specifications so as not to be restricted by tracks. Since the entire large truss platform is assembled from a plurality of small truss platforms, the small truss platform has a smaller span, thereby avoiding the situation where the large truss platform has excessive bending moment in the middle, and the small truss platform is easy to assemble, which is suitable for constructing a continuous construction process.

[0004] In order to achieve the above purpose, a construction method based on a quick-disassembly platform of a cast-in-place floor slab of a high-speed railway station is adopted, which comprises the following steps: S1: Construct a plane control grid, divide the construction sections, configure two complete quick-release platforms on the first construction section and the second construction section, and configure a cross-shaped quick-release platform on the third construction section. The complete quick-release platform is assembled from the cross-shaped quick-release platform and the branch truss platform components in other assembly areas. The cross-shaped quick-release platform itself is also assembled from the branch truss platform components. The branch truss platform components are arranged vertically and horizontally according to the plane control grid. The trusses are inserted at the interval between two adjacent branch truss platform components to achieve assembly. S2: The first and second construction sections are constructed in sequence. After the concrete formwork pouring of the floor slab is completed, the concrete of the first construction section is cured until the concrete strength reaches the preset value of the design strength percentage. The branch truss platform components that form the cross-shaped quick-detachable platform in the first construction section are retained, and the branch truss platform components in other assembly areas are transferred from the first construction section to the third construction section; the cross-shaped quick-detachable platform configured on the third construction section is assembled into a complete quick-detachable platform, and the concrete formwork pouring and curing of the third construction section are carried out. The quick-detachable platform of the third construction section and the reserved embedded space of the quick-detachable platform of the second construction section form a post-casting strip, and the concrete on the third construction section and the second construction section are poured after the embedded truss is filled to merge the concrete on the third construction section and the second construction section; S3: When the concrete strength of the first construction section reaches 100% of the design strength; the cross-shaped quick-detachable platform of the first construction section is transferred to the fourth construction section; when the concrete strength of the second construction section reaches the preset value of the design strength percentage, the cross-shaped quick-detachable platform in the second construction section is retained; the branch truss platform components in other assembly areas are transferred from the second construction section to the fourth construction section, and together with the cross-shaped quick-detachable platform transferred on the first construction section, a complete quick-detachable platform is formed; then formwork is supported and concrete is poured for curing; the quick-detachable platform of the fourth construction section and the reserved embedded space of the quick-detachable platform of the third construction section form a post-casting strip; after the embedded truss, concrete is poured to merge the concrete on the fourth construction section and the third construction section; S4: Complete the construction of subsequent construction sections according to the construction steps of S2-S3.

[0005] As a further improvement of the present invention, the quick-release platform comprises: The branch truss platform assembly is arranged in left-right intervals and front-back intervals to form branch truss platform assemblies arranged in a cross-shaped area, and then the corresponding branch truss platform assemblies are arranged in the assembly area divided by the cross-shaped area, and the branch truss platform assemblies in the assembly area and the branch truss platform assemblies in the cross-shaped area have reserved interlocking spaces; it includes a top truss and early-dismantling support steel columns fixed at the four corners of the top truss, and the early-dismantling support steel columns are fixed with socket buckles; The inlay truss platform component is arranged between the spaced branch truss platform components, and comprises an inlay truss and latch heads fixed at both ends of the upper and lower chords of the inlay truss, wherein the latch heads are inserted into the disc buckles.

[0006] With such a structure, the branch truss platform components are connected through the embedded truss platform components to form a cross-shaped frame, and then other branch truss platform components are assembled one by one on the cross-shaped frame, which is conducive to improving assembly efficiency. The pin heads are inserted into the disc buckles, which is conducive to the rapid assembly of the embedded trusses. After the branch truss platform components are dismantled and the supporting steel columns are removed, they can also be transported by a lifting truck.

[0007] As a further improvement of the present invention, a scissor brace is provided between the upper and lower chords of the patch truss.

[0008] With such a structure, the scissors brace is helpful to ensure the overall stability of the embedded truss.

[0009] As a further improvement of the present invention, the scissors strut includes mutually crossed diagonal webs, the middle part of the diagonal webs is sleeved with the first positioning sleeve, and the two adjacent first positioning sleeves are connected by pins; the two ends of the diagonal webs are hinged with lugs; the lugs are fixed on the second positioning sleeve, and the second positioning sleeve is slidably connected to the upper chord and the lower chord, and moves to a position close to the pin head.

[0010] With such a structure, the two first positioning sleeves are connected by a pin shaft and can rotate, which is conducive to adjusting the distance between the upper and lower chords, so that the pin head can be flexibly inserted into the disc buckle to adapt to disc buckles of different heights. After the second positioning sleeve slides, it can abut the disc buckle to form a clamp for the disc buckle. The disc buckle provides a limiting effect to prevent the second positioning sleeve from further sliding, so that the scissors strut forms a stable structure.

[0011] As a further improvement of the present invention, a quick-release platform lifting mechanism is provided at the lower end of the early-release support steel column, and the quick-release platform lifting mechanism comprises: Steel frame cap, which is assembled using Bailey frames; Remove the support, which is installed on the bottom surface of the middle part of the steel frame cap; The steel frame is installed on the middle part of the steel frame cap; The first hydraulic jack is installed in the steel frame, with its bottom installed on the middle of the steel frame cap, and its piston end is installed with the early dismantling support steel column; The turbine screw lift is installed at the four corners of the steel frame support platform; the lower end of its lifting rod passes through the steel frame support platform and is installed with positioning feet; The driving wheel assembly is installed at the four corners of the steel frame support platform and is spaced apart from the lifting rod.

[0012] With such a structure, the quick-release platform lifting mechanism is conducive to driving the branch truss platform components to move and lift, and is conducive to flexible assembly between the branch truss platform components.

[0013] As a further improvement of the present invention, the unloading support comprises: a base plate, which is mounted on the bottom surface of the steel frame support platform; an upper support mounted below the base plate; The lower support is spaced below the upper support. T-shaped grooves are provided on the wedge-shaped surfaces of the upper support and the lower support; The left support and the right support are slidably assembled between the upper support and the lower support, and are slidably mounted on the left and right wedge surfaces of the upper support and the lower support; A T-shaped slider, which is fixed to the bottom surfaces of the left support and the right support and is slidably adapted to the T-shaped slot; The reaction frames are installed in pairs on the bottom surface of the steel frame cap and are spaced apart from the left support and the right support respectively; The second hydraulic jacks are mounted in pairs on the reaction frame, with the opposite piston ends facing the left support and the right support respectively; A push block mounted on the piston end of the second hydraulic jack; A universal ball is installed on the front and back sides of the push block, and the universal ball installed on the front side of the push block abuts against the left support and the right support; The concave slide rail is installed on the back of the left support and the right support and is extended by the push block. The universal ball installed on the back of the push block abuts against the concave slide rail.

[0014] By adopting such a structure, the left and right supports can be driven to move along the wedge surfaces of the upper and lower supports through the telescopic movement of the second hydraulic jack, thereby lifting or removing the lower support so that the lower support can be away from and contact the ground; in conjunction with the steel frame pedestal, the middle load of the steel frame pedestal is transferred to the ground, and at the same time it bears the role of resisting the middle bending moment of the steel frame pedestal.

[0015] As a further improvement of the present invention, a pad is installed on the bottom surface of the lower support.

[0016] With such a structure, the pad is helpful to expand the force-bearing area of ​​the rigid ground.

[0017] As a further improvement of the present invention, the concave slide rails are arranged side by side at intervals, the piston end of the second hydraulic jack extends into the space between the two concave slide rails, and the push block extends into the space between the concave slide rail and the left support, and between the concave slide rail and the right support; A transverse J-shaped fixing frame is installed on the back of the concave slide rail, one end of the J-shaped fixing frame is fixed to the back of the left support and the right support, and the other end is fixed to the back of the concave slide rail; A tripod is fixed at the corner of the J-shaped fixing frame; The push block is in the shape of a stepped frustum.

[0018] With such a structure, the second hydraulic jack can stably drive the left and right supports to move; the J-shaped fixing frame can strengthen the concave slide rail and prevent the concave slide rail from bending; the tripod is conducive to stabilizing the corner part; the push block is a stepped cone type, which is convenient for installing the front and back universal balls and provides sufficient installation space for the front and back universal balls.

[0019] As a further improvement of the present invention, the driving wheel assembly includes a first base, a wheel rod is rotatably mounted on the bottom surface of the first base, a wheel frame is mounted on the bottom surface of the wheel rod, bearings are mounted in both side plates of the wheel frame, axles are passed through the bearings, and wheels are fixedly connected to the axles; a second base is mounted on the outer side of one side plate of the wheel frame, a first reduction motor is mounted under the second base, and an output end of the first reduction motor is coaxially fixedly connected to the axle.

[0020] With such a structure, the first reduction motor drives the wheels to rotate, so that the steel frame support platform can translate as a whole, which is conducive to moving to the specified position.

[0021] As a further improvement of the present invention, a driven gear is fixedly sleeved on the wheel rod; the driven gear is meshed with the driving gear; the driving gear is fixedly sleeved on the output end of the second reduction motor, the second reduction motor is installed on the third base, and the third base is installed on the bottom surface of the steel frame pedestal.

[0022] With such a structure, the wheels can be turned after the second reduction motor is started.

[0023] As a further improvement of the present invention, a threaded telescopic tube is arranged between the latch head and the second positioning sleeve, and the threaded telescopic tube is slidably sleeved on the upper and lower chords of the patching truss.

[0024] With such a structure, the threaded telescopic tube can be extended or shortened by rotating the threaded connection to control the abutment position of the scissors support, which is beneficial to improving the overall stability.

[0025] The present invention is conducive to the flow-construction of larger-specification cast-in-place slabs for waiting floors. It first forms a cross frame of the formwork truss platform, and then assembles other truss units one by one. A plurality of cross truss platforms are arranged according to grid points, and then other truss platforms are assembled, and rods are embedded, which is conducive to the construction of a larger-specification truss platform that is not restricted by tracks. Since the entire large truss platform is assembled from a plurality of small truss platforms, the small truss platform has a smaller span, thereby avoiding the situation where the large truss platform has excessive bending moment in the middle. In addition, the small truss platform is easy to assemble and is suitable for constructing a flow-construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an embodiment.

[0027] Figure 2 Assemble the elevation view for the branch truss platform assembly.

[0028] Figure 3 This is an enlarged schematic diagram of the flexible scissors support part.

[0029] Figure 4 This is a schematic diagram of the installation of the threaded expansion tube.

[0030] Figure 5This is an enlarged schematic diagram of the fixed scissors support part.

[0031] Figure 6 It is a schematic diagram of the quick-release platform lifting mechanism.

[0032] Figure 7 Schematic diagram of the support removal.

[0033] Figure 8 This is a schematic diagram of the installation of the second hydraulic jack.

[0034] Fig. 9 It is a schematic diagram of the structure of the driving wheel assembly.

[0035] Fig.10 This is the installation diagram of the second reduction motor.

[0036] Fig.11 This is a schematic diagram of flow construction.

[0037] Reference numerals: 1, branch truss platform assembly; 101, top truss; 102, early dismantling support steel column; 103, buckle; 2. Inlay truss platform assembly; 201. Inlay truss; 202. Latch head; 203, scissors support; 2031, diagonal brace; 2032, first positioning sleeve; 2033, lug; 2034, second positioning sleeve; 204, threaded expansion pipe; 3. Steel frame cap; 301, Bailey frame; 4. Unloading support; 401. Base plate; 402. Upper support; 403. Lower support; 404. T-slot; 405. Left support; 406. Right support; 407. T-sliding block; 408. Reaction frame; 409. Second hydraulic jack; 410. Pushing block; 411. Universal ball; 410. Pushing block; 412. Concave slide rail; 413. Pad; 414. J-type fixing frame; 415. Tripod; 5. Steel frame, 6. First hydraulic jack; 7. Turbine screw lift; 701. Lifting rod; 702. Positioning foot; 8. Driving wheel assembly; 801. First base; 802. Wheel rod; 803. Wheel frame; 804. Side plate; 805. Bearing; 806. Axle; 807. Wheel; 808. Second base; 809. First reduction motor; 810. Driven gear; 811. Driving gear; 812. Second reduction motor; 813. Third base. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Example 1 like Fig.11As shown, a construction method based on the quick-disassembly platform of the cast-in-place floor of the high-speed railway station building adopts flow construction. This process requires at least 2.5 quick-disassembly platforms, including two complete quick-disassembly platforms and one cross-shaped quick-disassembly platform. The two complete quick-disassembly platforms are placed in the first construction section and the second construction section respectively, and one cross-shaped quick-disassembly platform is placed in the third construction section. The first and second construction sections are constructed in sequence. After the concrete strength of the floor slab of the first construction section reaches 75%, the branch truss platform assembly 1 that forms the cross-shaped quick-detachable platform in the first construction section is retained, and the branch truss platform assembly 1 in other assembly areas is transferred from the first construction section to the third construction section, and the branch truss platform assembly 1 in the assembly area of ​​the third construction section is completed, thereby forming a complete quick-detachable platform on the third construction section, and assembled with the quick-detachable platform on the second construction section, and the reserved patching space between the two forms a post-casting strip; the cross-shaped quick-detachable platform on the first construction section is transferred to the fourth construction section after the concrete strength meets the 100% requirement, and after the concrete strength of the floor slab of the second construction section reaches 75%, the cross-shaped quick-detachable platform in the second construction section is retained, and the branch truss platform assembly 1 in other assembly areas is transferred from the second construction section to the fourth construction section, and a complete quick-detachable platform is formed with the cross-shaped quick-detachable platform transferred on the first construction section, and the construction of subsequent construction sections is completed according to the above process.

[0041] This embodiment is conducive to the flow construction of larger cast-in-place slabs of the waiting layer. It first forms the cross frame of the formwork truss platform, and then assembles other truss units one by one. Multiple cross truss platforms are arranged according to grid points, and then other truss platforms are assembled, and rods are embedded. This is conducive to building a larger truss platform that is not restricted by the track. Since the entire large truss platform is assembled from multiple small truss platforms, the small truss platform has a smaller span, which can avoid the situation where the large truss platform has excessive bending moment in the middle. In addition, the small truss platform is easy to assemble and is suitable for building a flow construction process.

[0042] Example 2 like Figure 1-Figure 11 As shown, a high-speed railway station building cast-in-place floor slab quick disassembly platform comprises: The branch truss platform assembly 1 is arranged in a left-right interval and a front-back interval to form a branch truss platform assembly 1 arranged in a cross-shaped area, and then the corresponding branch truss platform assembly 1 is arranged in the assembly area divided by the cross-shaped area, and the branch truss platform assembly 1 in the assembly area and the branch truss platform assembly 1 in the cross-shaped area have reserved interlocking spaces; it includes a top truss 101 and early-dismantling support steel columns 102 fixed at the four corners of the top truss 101, and the early-dismantling support steel columns 102 are fixed with socket buckles 103; The patching truss platform assembly 2 is arranged between the spaced branch truss platform assemblies 1, and includes a patching truss 201 and a latch head 202 fixed to both ends of the upper and lower chords of the patching truss 201, and the latch head 202 is inserted into the buckle 103.

[0043] With such a structure, the branch truss platform assembly 1 is connected through the embedded truss platform assembly 2 to form a cross-shaped frame, and then other branch truss platform assemblies 1 are assembled one by one on the cross-shaped frame, which is beneficial to improving the assembly efficiency. The pin head 202 is inserted into the disc buckle 103, which is beneficial to the rapid assembly of the embedded truss 201.

[0044] In this embodiment, a scissor brace 203 is provided between the upper and lower chords of the patch truss 201 .

[0045] With such a structure, the scissors brace 203 is helpful to ensure the overall stability of the patched truss 201.

[0046] In this embodiment, the scissors strut 203 includes mutually crossed oblique webs 2031, the middle part of the oblique webs 2031 is sleeved with the first positioning sleeve 2032, and the two adjacent first positioning sleeves 2032 are connected by pins; the two ends of the oblique webs 2031 are hinged with lugs 2033; the lugs 2033 are fixed on the second positioning sleeve 2034, and the second positioning sleeve 2034 is slidably connected to the upper chord and the lower chord, and moves to a position close to the pin head 202.

[0047] With such a structure, the two first positioning sleeves 2032 are connected by a pin shaft and can rotate, which is beneficial to adjusting the distance between the upper and lower chords, so that the pin head 202 can be flexibly inserted into the disc buckle 103 to adapt to the disc buckle 103 of different heights. After sliding, the second positioning sleeve 2034 can abut against the disc buckle 103 to form a clamp for the disc buckle 103. The disc buckle 103 provides a limiting effect to prevent the second positioning sleeve 2034 from further sliding, so that the scissors strut 203 forms a stable structure.

[0048] In this embodiment, a quick-release platform lifting mechanism is provided at the lower end of the early-release support steel column 102, and the quick-release platform lifting mechanism includes: Steel frame cap 3, which is assembled using Bailey frame 301; Remove the support 4, which is installed on the bottom surface of the middle part of the steel frame cap 3; The steel frame 5 is installed on the middle part of the steel frame cap 3; The first hydraulic jack 6 is installed in the steel frame 5, the bottom of which is installed on the middle of the steel frame cap 3, and the piston end of which is installed with the early dismantling support steel column 102; The turbine screw lifter 7 is installed at the four corners of the steel frame support 3; the lower end of its lifting rod 701 passes through the steel frame support 3 and is installed with a positioning foot 702; The driving wheel assembly 8 is installed at the four corners of the steel frame support platform 3 and is spaced apart from the lifting rod 701.

[0049] With such a structure, the quick-release platform lifting mechanism is conducive to driving the branch truss platform assembly 1 to move and lift, and is conducive to flexible assembly between the branch truss platform assemblies 1.

[0050] In this embodiment, the unloading support 4 includes: a base plate 401, which is installed on the bottom surface of the steel frame support 3; An upper support 402, which is mounted below the base plate 401; The lower support 403 is spaced below the upper support 402. T-shaped slots 404, which are provided on the wedge-shaped surfaces of the upper support 402 and the lower support 403; The left support 405 and the right support 406 are slidably assembled between the upper support 402 and the lower support 403, and are slidably mounted on the left and right wedge surfaces of the upper support 402 and the lower support 403; A T-shaped slider 407, which is fixed to the bottom surface of the left support 405 and the right support 406, and is slidably adapted to the T-shaped slot 404; The reaction frames 408 are installed in pairs on the bottom surface of the steel frame cap 3 and are spaced apart from the left support 405 and the right support 406; Second hydraulic jacks 409 are mounted in pairs on the reaction frame 408, with opposite piston ends facing the left support 405 and the right support 406 respectively; A push block 410 mounted on the piston end of the second hydraulic jack 409; Universal balls 411 are installed on the front and back sides of the push block 410. The universal balls 411 installed on the front side of the push block 410 abut against the left support 405 and the right support 406; The concave slide rail 412 is installed on the back of the left support 405 and the right support 406 and is extended into by the push block 410 . The universal ball 411 installed on the back of the push block 410 abuts against the concave slide rail 412 .

[0051] With such a structure, the left support 405 and the right support 406 can be driven to move along the wedge-shaped surfaces of the upper support 402 and the lower support 403 through the telescopic movement of the second hydraulic jack 409, thereby lifting or removing the lower support 403, so that the lower support 403 can be away from and contact the ground; in conjunction with the steel frame pedestal 3, the middle load of the steel frame pedestal 3 is transferred to the ground, and at the same time, it bears the role of resisting the middle bending moment of the steel frame pedestal 3.

[0052] In this embodiment, a pad 413 is installed on the bottom surface of the lower support 403 .

[0053] With such a structure, the pad 413 is helpful to expand the force-bearing area of ​​the rigid ground.

[0054] In this embodiment, the concave slide rails 412 are arranged side by side and spaced apart, the piston end of the second hydraulic jack 409 extends between the two concave slide rails 412, and the push block 410 extends between the concave slide rail 412 and the left support 405, and between the concave slide rail 412 and the right support 406; A transverse J-shaped fixing frame 414 is installed on the back of the concave slide rail 412, one end of the J-shaped fixing frame 414 is fixed to the back of the left support 405 and the right support 406, and the other end is fixed to the back of the concave slide rail 412; A tripod 415 is fixed at the corner of the J-shaped fixing frame 414; The push block 410 is in the shape of a stepped frustum.

[0055] With such a structure, the second hydraulic jack 409 can stably drive the left support and the right support to move; the J-shaped fixing frame 414 can strengthen the concave slide rail 412 to prevent the concave slide rail 412 from bending; the tripod 415 is conducive to stabilizing the corner part; the push block 410 is a stepped cone type, which is convenient for installing the front and back universal balls 411 and provides sufficient installation space for the front and back universal balls 411.

[0056] In this embodiment, the driving wheel assembly includes a first base 801, a wheel rod 802 is rotatably mounted on the bottom surface of the first base 801, a wheel frame 803 is mounted on the bottom surface of the wheel rod 802, bearings 805 are mounted in the two side plates 804 of the wheel frame 803, an axle 806 is passed through the bearing 805, and a wheel 807 is fixedly connected to the axle 806; a second base 808 is mounted on the outer side of a side plate 804 of the wheel frame 803, a first reduction motor 809 is mounted under the second base 808, and the output end of the first reduction motor 809 is coaxially fixedly connected to the axle 806.

[0057] With such a structure, the first reduction motor 809 drives the wheels to rotate, so that the steel frame support 3 can translate as a whole, which is conducive to moving to the specified position.

[0058] In this embodiment, the driven gear 810 is fixedly sleeved on the wheel rod 802; the driven gear 810 is meshed with the driving gear 811; the driving gear 811 is fixedly sleeved on the output end of the second reduction motor 812, the second reduction motor 812 is installed on the third base 813, and the third base 813 is installed on the bottom surface of the steel frame base 3.

[0059] With such a structure, the wheels can be turned after the second reduction motor 812 is started.

[0060] In this embodiment, a threaded telescopic tube 204 is disposed between the latch head 202 and the second positioning sleeve 2034 , and the threaded telescopic tube 204 is slidably sleeved on the upper and lower chords of the patching truss 201 .

[0061] With such a structure, the threaded telescopic tube 204 is extended or shortened by rotating through a threaded connection to control the abutment position of the scissors support 203, which is beneficial to improving the overall stability.

[0062] This embodiment is conducive to forming a cross frame in the truss platform, which is conducive to assembly. After the cross frame is formed, other truss units are assembled one by one. Multiple cross truss platforms are arranged according to grid points, and then other truss platforms are assembled, and rods are embedded. This is conducive to building a truss platform with larger specifications so as not to be restricted by the track. Since the entire large truss platform is assembled from multiple small truss platforms, the small truss platform has a smaller span, which can avoid the situation where the large truss platform has excessive bending moment in the middle.

[0063] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art of the present invention, several equivalent substitutions or obvious variations can be made without departing from the concept of the present invention, and the performance or use is the same, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A construction method based on a quick-disassembly platform for cast-in-place floor slabs of a high-speed railway station, characterized in that The steps include: S1: constructing a plane control grid, dividing the construction sections, configuring two complete quick-release platforms on the first construction section and the second construction section, configuring a cross-shaped quick-release platform on the third construction section, wherein the complete quick-release platform is assembled from the cross-shaped quick-release platform and branch truss platform components (1) in other assembly areas, and the cross-shaped quick-release platform itself is also assembled from branch truss platform components (1), the branch truss platform components (1) are arranged longitudinally and transversely according to the plane control grid, and trusses are inserted at the intervals between two adjacent branch truss platform components (1) to achieve assembly; S2: The first and second construction sections are constructed in sequence, and after the concrete formwork pouring of the floor slab is completed, the concrete of the first construction section is cured until the concrete strength reaches a preset value of the design strength percentage, the branch truss platform assembly (1) forming the cross-shaped quick-detachable platform in the first construction section is retained, and the branch truss platform assembly (1) in other assembly areas is transferred from the first construction section to the third construction section; the branch truss platform assembly (1) is assembled with the cross-shaped quick-detachable platform configured on the third construction section to form a complete quick-detachable platform, and the concrete formwork pouring and curing of the third construction section are performed, the quick-detachable platform of the third construction section and the quick-detachable platform of the second construction section are embedded in the reserved space to form a post-casting strip, and after the truss is embedded, concrete is poured to merge the concrete on the third construction section and the second construction section; S3: When the concrete strength of the first construction section reaches 100% of the design strength, the cross-shaped quick-detachable platform of the first construction section is transferred to the fourth construction section. When the concrete strength of the second construction section reaches a preset value of the design strength percentage, the cross-shaped quick-detachable platform in the second construction section is retained, and the branch truss platform components (1) of other assembly areas are transferred from the second construction section to the fourth construction section to form a complete quick-detachable platform together with the cross-shaped quick-detachable platform transferred on the first construction section. Then, formwork is supported and concrete is poured for curing. The quick-detachable platform of the fourth construction section and the reserved filling space of the quick-detachable platform of the third construction section form a post-casting strip. After the filling trusses are filled, pouring is performed to merge the concrete on the fourth construction section and the third construction section. S4: Complete the construction of subsequent construction sections according to the construction steps of S2-S3.

2. A construction method based on the cast-in-place floor quick-disassembly platform of a high-speed railway station building according to claim 1, characterized in that The quick-release platform comprises: The branch truss platform assembly (1) is arranged in a left-right interval and a front-back interval to form a branch truss platform assembly (1) arranged in a cross-shaped area, and then the corresponding branch truss platform assembly (1) is arranged in an assembly area divided by the cross-shaped area, and a patching space is reserved between the branch truss platform assembly (1) in the assembly area and the branch truss platform assembly (1) in the cross-shaped area; it comprises a top truss (101) and early-dismantling support steel columns (102) fixed at the four corners of the top truss (101), and a socket buckle (103) is fixed on the early-dismantling support steel column (102); The patching truss platform assembly (2) is arranged between the spaced branch truss platform assemblies (1), and comprises a patching truss (201) and a latch head (202) fixed to both ends of the upper and lower chords of the patching truss (201), wherein the latch head (202) is inserted into the buckle (103).

3. The construction method based on the cast-in-place floor quick-disassembly platform of the high-speed railway station building according to claim 2 is characterized in that A scissor brace (203) is provided between the upper and lower chords of the patched truss (201).

4. The construction method based on the cast-in-place floor quick-disassembly platform of the high-speed railway station building according to claim 3 is characterized in that The scissors brace (203) comprises mutually intersecting oblique web bars (2031), wherein the middle part of the oblique web bars (2031) is sleeved with a first positioning sleeve (2032), and two adjacent first positioning sleeves (2032) are connected by a pin; both ends of the oblique web bars (2031) are hinged with lugs (2033); the lugs (2033) are fixed on the second positioning sleeve (2034), and the second positioning sleeve (2034) is slidably connected to the upper chord bar and the lower chord bar and moves to a position close to the latch head (202).

5. The construction method based on the cast-in-place floor quick-disassembly platform of the high-speed railway station building according to claim 4 is characterized in that A quick-release platform lifting mechanism is provided at the lower end of the early-release support steel column (102), and the quick-release platform lifting mechanism comprises: A steel frame cap (3) assembled using Bailey frames (301); A removal support (4) is installed on the bottom surface of the middle part of the steel frame cap (3); A steel frame (5) mounted on the middle of the steel frame cap (3); A first hydraulic jack (6) is installed in the steel frame (5), with its bottom installed on the middle of the steel frame cap (3) and its piston end installed with an early dismantling support steel column (102); The turbine screw lift (7) is installed at the four corners of the steel frame support (3); the lower end of the lift rod (701) passes through the steel frame support (3) and is installed with a positioning foot (702); The driving wheel assembly (8) is installed at the four corners of the steel frame support platform (3) and is spaced apart from the lifting rod (701).

6. The construction method based on the cast-in-place floor quick-disassembly platform of the high-speed railway station building according to claim 5 is characterized in that The unloading support (4) comprises: a base plate (401) which is mounted on the bottom surface of the steel frame support (3); An upper support (402) mounted below the base plate (401); The lower support (403) is spaced below the upper support (402). T-shaped grooves (404) are formed on the wedge-shaped surfaces of the upper support (402) and the lower support (403); A left support (405) and a right support (406) are slidably mounted between the upper support (402) and the lower support (403), and are slidably mounted on left and right wedge-shaped surfaces of the upper support (402) and the lower support (403); A T-shaped sliding block (407), which is fixed to the bottom surfaces of the left support (405) and the right support (406) and is slidably adapted to the T-shaped slot (404); Reaction frames (408) are installed in pairs on the bottom surface of the steel frame support (3) and are spaced apart from the left support (405) and the right support (406); Second hydraulic jacks (409) are mounted in pairs on the reaction frame (408), with opposite piston ends facing the left support (405) and the right support (406) respectively; A push block (410) mounted on the piston end of the second hydraulic jack (409); A universal ball (411) is installed on the front and back sides of the push block (410), and the universal ball (411) installed on the front side of the push block (410) abuts against the left support (405) and the right support (406); The concave slide rail (412) is installed on the back of the left support (405) and the right support (406) and is extended into by the push block (410). The universal ball (411) installed on the back of the push block (410) abuts against the concave slide rail (412).

7. The construction method based on the cast-in-place floor quick-disassembly platform of the high-speed railway station building according to claim 6 is characterized in that A pad (413) is installed on the bottom surface of the lower support (403).

8. The construction method based on the cast-in-place floor quick-disassembly platform of the high-speed railway station building according to claim 6 is characterized in that The concave slide rails (412) are arranged side by side at intervals, the piston end of the second hydraulic jack (409) extends between the two concave slide rails (412), and the push block (410) extends between the concave slide rail (412) and the left support (405), and between the concave slide rail (412) and the right support (406); A transverse J-shaped fixing frame (414) is installed on the back of the concave slide rail (412), one end of the J-shaped fixing frame (414) is fixed to the back of the left support (405) and the right support (406), and the other end is fixed to the back of the concave slide rail (412); A tripod (415) is fixed at a corner of the J-shaped fixing frame (414); The push block (410) is in the shape of a stepped frustum.

9. The construction method based on the cast-in-place floor quick-disassembly platform of the high-speed railway station building according to claim 5 is characterized in that The driving wheel assembly (8) comprises a first base (801), a wheel rod (802) is rotatably mounted on the bottom surface of the first base (801), a wheel frame (803) is mounted on the bottom surface of the wheel rod (802), bearings (805) are mounted in two side plates (804) of the wheel frame (803), an axle (806) is passed through the bearings (805), and a wheel (807) is fixedly connected to the axle (806); a second base (808) is mounted on the outside of one side plate (804) of the wheel frame (803), a first reduction motor (809) is mounted below the second base (808), and an output end of the first reduction motor (809) is coaxially fixedly connected to the axle (806).

10. The construction method based on the cast-in-place floor quick-disassembly platform of the high-speed railway station building according to claim 9 is characterized in that The wheel rod (802) is fixedly sleeved with a driven gear (810); the driven gear (810) is meshed with a driving gear (811); the driving gear (811) is fixedly sleeved with an output end of a second reduction motor (812); the second reduction motor (812) is mounted on a third base (613); and the third base (813) is mounted on the bottom surface of the steel frame support platform (3).

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