Construction method based on high-speed railway station building cast-in-place floor quick disassembly platform

Abstract

The application relates to a construction method based on a high-speed railway station building cast-in-place floor quick disassembly platform, which comprises the following steps: S1, constructing a plane control grid, dividing a construction section, and configuring two complete quick disassembly platforms on a first construction section and a second construction section and a cross-shaped quick disassembly platform on a third construction section; S2, when the concrete strength reaches a preset value of a percentage of design strength, transferring branch truss platform components of other assembly areas from the first construction section to the third construction section; S3, transferring the cross-shaped quick disassembly platform of the first construction section to a fourth construction section, and when the concrete strength of the second construction section reaches the preset value of the percentage of design strength, transferring the branch truss platform components of other assembly areas from the second construction section to the fourth construction section; and S4, completing the construction of subsequent construction sections according to the construction steps of S2-S3. The application is favorable for constructing a larger waiting floor cast-in-place floor flow construction process.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of building construction, and particularly relates to a construction method based on a fast disassembly platform for cast-in-place floor slabs of high-speed rail station buildings. BACKGROUND

[0002] The waiting area of a large high-speed rail station building is usually an open space on a whole floor, and the cast-in-place floor slab used therein has a large specification, such as a truss platform for concrete construction of a large space roof disclosed in Chinese Patent Application Publication No. CN 104895314 A, which comprises a truss support iron piece, a steel corbel fixedly connected to the truss support iron piece, a track installed on the steel corbel, and a steel frame truss installed on the track and capable of sliding on the track. A pad is laid on the steel frame truss, and a full-bay bent frame, a support enclose purlin, and a formwork are arranged on the pad. The truss platform is moved along the track, and a slip-form construction method is used to cast concrete in the construction area one by one. The specification of the truss platform used in the construction method is limited by the two tracks, and the bending moment of the large truss platform in the middle is also large, which is not conducive to being supported by the two tracks alone. SUMMARY

[0003] The present application aims to provide a construction method based on a fast disassembly platform for cast-in-place floor slabs of high-speed rail station buildings, which is conducive to the construction of cast-in-place floor slabs of a larger specification in a flow construction process. The cross-shaped framework of a formwork truss platform is first formed, and then other truss units are assembled one by one. A plurality of cross-shaped truss platforms are arranged according to a grid point, and other truss platforms are assembled and embedded with rod members. This is conducive to the construction of a larger truss platform without being limited by the tracks. Since the entire large truss platform is assembled from a plurality of small truss platforms, the span of the small truss platforms is small, thereby avoiding the case that the bending moment of the large truss platform in the middle is too large. In addition, the small truss platforms are conducive to assembly and are suitable for the construction of a flow construction process.

[0004] To achieve the above-mentioned purpose, a construction method based on a fast disassembly platform for cast-in-place floor slabs of high-speed rail station buildings is adopted, which comprises the following steps:

[0005] S1: constructing a plane control grid, dividing a construction section, and configuring two complete fast disassembly platforms on the first and second construction sections and a cross-shaped fast disassembly platform on the third construction section. The complete fast disassembly platform is assembled from the cross-shaped fast disassembly platform and branch truss platform components of other assembly areas. The cross-shaped fast disassembly platform itself is also assembled from branch truss platform components. The branch truss platform components are arranged according to the longitudinal and transverse directions of the plane control grid, and a truss is embedded between adjacent two branch truss platform components to realize assembly.

[0006] S2: The first and second construction sections are constructed in sequence, after the floor concrete formwork pouring is completed, the first construction section concrete is cured, until the concrete strength reaches the design strength percentage preset value, the branch truss platform assembly forming the cross-shaped quick disassembly platform in the first construction section is reserved, the branch truss platform assembly of other assembly areas is transferred from the first construction section to the third construction section; the complete quick disassembly platform is assembled with the cross-shaped quick disassembly platform arranged on the third construction section, and the concrete formwork pouring and curing of the third construction section are carried out, the quick disassembly platform of the third construction section and the reserved embedding space of the quick disassembly platform of the second construction section form a post-cast strip, and the embedding truss is embedded after pouring to combine the concrete on the third construction section and the second construction section;

[0007] S3: After the concrete strength of the first construction section reaches 100% of the design strength, the cross-shaped quick disassembly platform of the first construction section is transferred to the fourth construction section, after the concrete strength of the second construction section reaches the design strength percentage preset value, the cross-shaped quick disassembly platform in the second construction section is reserved, the branch truss platform assembly of other assembly areas is transferred from the second construction section to the fourth construction section, and the complete quick disassembly platform is formed with the cross-shaped quick disassembly platform transferred from the first construction section, and then the concrete is formwork poured and cured, the quick disassembly platform of the fourth construction section and the reserved embedding space of the quick disassembly platform of the third construction section form a post-cast strip, and the embedding truss is embedded after pouring to combine the concrete on the fourth construction section and the third construction section;

[0008] S4: The construction of the subsequent construction section is completed according to the construction steps of S2-S3.

[0009] As a further improvement of the application, the quick disassembly platform comprises:

[0010] The branch truss platform assembly is arranged in a left-right interval and a front-rear interval to form a branch truss platform assembly arranged in a cross-shaped area, and the corresponding branch truss platform assembly is arranged in the assembly area divided by the cross-shaped area, and the branch truss platform assembly in the assembly area and the branch truss platform assembly in the cross-shaped area reserve embedding space; it comprises a top truss and an early disassembly support steel column fixed at the four corner positions of the top truss, and a disc buckle is fixed on the early disassembly support steel column.

[0011] The embedding truss platform assembly is arranged between the interval branch truss platform assemblies, and it comprises an embedding truss and a latch head fixed at both ends of the top and bottom chords of the embedding truss, and the latch head is inserted into the disc buckle.

[0012] With such a structure, the branch truss platform assembly is connected through the embedding truss platform assembly and forms a cross-shaped framework, and then other branch truss platform assemblies are assembled one by one on the cross-shaped framework, which is conducive to improving the assembly efficiency, the latch head is inserted into the disc buckle, which is conducive to the rapid assembly of the embedding truss, and the branch truss platform assembly can also be transported by the lifting carrier after the early disassembly support steel column is disassembled.

[0013] As a further improvement of the application, the scissors brace is arranged between the upper and lower chords of the embedded truss.

[0014] With such a structure, the scissors brace is beneficial to guarantee the overall stability of the embedded truss.

[0015] As a further improvement of the application, the scissors brace comprises mutually intersecting diagonal web members, the middle part of the diagonal web members is sleeved with a first positioning sleeve, and adjacent two first positioning sleeves are connected by a pin shaft; the two ends of the diagonal web members are hingedly connected with lugs; the lugs are fixed on a second positioning sleeve, and the second positioning sleeve is slidingly connected on the upper chord and the lower chord and is moved to a position close to the bolt head.

[0016] With such a structure, the two first positioning sleeves are connected by a pin shaft and can rotate, which is beneficial to adjust the distance between the upper chord and the lower chord, so that the bolt head can be flexibly inserted into the disc buckle, so as to adapt to disc buckles of different heights, and the second positioning sleeve can abut against the disc buckle after sliding, thereby forming clamping of the disc buckle, the disc buckle provides a limiting effect, and further sliding of the second positioning sleeve is prevented, so that the scissors brace forms a stable structure.

[0017] As a further improvement of the application, the early-removal support steel column is provided with a quick-removal platform lifting mechanism at the lower end, and the quick-removal platform lifting mechanism comprises:

[0018] The steel frame pile cap is assembled by using a Bailey frame;

[0019] The unloading support is installed on the middle bottom surface of the steel frame pile cap;

[0020] The steel frame is installed on the middle upper surface of the steel frame pile cap;

[0021] The first hydraulic jack is installed on the steel frame, the bottom of the first hydraulic jack is installed on the middle upper surface of the steel frame pile cap, and the piston end of the first hydraulic jack is installed on the early-removal support steel column;

[0022] The worm screw elevator is installed at the four corner positions of the steel frame pile cap, and the lifting rod of the worm screw elevator passes through the steel frame pile cap and is installed on the positioning foot at the lower end;

[0023] The driving wheel assembly is installed at the four corner positions of the steel frame pile cap and is spaced from the lifting rod.

[0024] With such a structure, the quick-removal platform lifting mechanism is beneficial to drive the branch truss platform assembly to move and lift, and is beneficial to flexible assembly between the branch truss platform assemblies.

[0025] As a further improvement of the application, the unloading support comprises a base plate installed on the bottom surface of the steel frame pile cap;

[0026] The upper support is installed on the lower surface of the base plate;

[0027] lower support, which is arranged below the upper support at intervals,

[0028] T-shaped groove, which is arranged on the wedge surface of the upper support and the lower support;

[0029] left support and right support, which are slidingly assembled between the upper support and the lower support and are slidingly installed on the wedge surface of the upper support and the lower support;

[0030] T-shaped slider, which is fixed to the bottom surface of the left support and the right support and is slidingly fitted with the T-shaped groove;

[0031] counterforce frame, which is installed on the bottom surface of the steel frame pile cap in pairs and is arranged at intervals from the left support and the right support;

[0032] second hydraulic jack, which is installed on the counterforce frame in pairs and has opposite piston ends respectively facing the left support and the right support;

[0033] pushing block, which is installed on the piston end of the second hydraulic jack;

[0034] universal ball, which is installed on the front surface and the back surface of the pushing block, and the universal ball installed on the front surface of the pushing block abuts against the left support and the right support;

[0035] concave slide rail, which is installed on the back surface of the left support and the right support and is extended by the pushing block, and the universal ball installed on the back surface of the pushing block abuts against the concave slide rail.

[0036] With such a structure, the extension and retraction movement of the second hydraulic jack can drive the left support and the right support to move along the wedge surface of the upper support and the lower support, thereby lifting or unloading the lower support, so that the lower support can move away from or contact the ground; in cooperation with the steel frame pile cap, the central load of the steel frame pile cap is transmitted to the ground, and at the same time, the steel frame pile cap resists the central bending moment.

[0037] As a further improvement of the present application, a pad plate is installed on the bottom surface of the lower support.

[0038] With such a structure, the pad plate is beneficial to expand the rigid ground stress area.

[0039] As a further improvement of the present application, the concave slide rails are arranged side by side at intervals, the piston end of the second hydraulic jack extends between the two concave slide rails, and the pushing block extends between the concave slide rail and the left support and between the concave slide rail and the right support;

[0040] A transverse J-shaped fixing frame is installed on the back surface of the concave slide rail, one end of the J-shaped fixing frame is fixed to the back surface of the left support and the right support, and the other end is fixed to the back surface of the concave slide rail;

[0041] A tripod is fixed at the corner of the J-shaped fixing frame.

[0042] The pushing block is a stepped circular table type.

[0043] With the structure, the second hydraulic jack can stably drive the left support and the right support to move; the J-shaped fixing frame can strengthen the concave slide rail and prevent the concave slide rail from bending; the tripod is beneficial to the stability of the corner part; the pushing block is in the stepped circular table type, which is convenient for installing the front and back universal balls and provides sufficient installation space for the front and back universal balls.

[0044] As a further improvement of the present application, the driving wheel assembly comprises a first base, the bottom surface of the first base is rotatably installed with a wheel rod, the bottom surface of the wheel rod is installed with a wheel frame, bearings are installed in the two side plates of the wheel frame, an axle is penetrated through the bearings, and a wheel is fixedly connected to the axle; a second base is installed on the outer side of one side plate of the wheel frame, a first speed reducer motor is installed on the lower surface of the second base, and the output end of the first speed reducer motor is coaxially fixedly connected with the axle.

[0045] With the structure, the first speed reducer motor drives the wheel to rotate, so that the steel frame pile cap can be integrally translated, which is beneficial to moving to a specified position.

[0046] As a further improvement of the present application, a driven gear is fixedly sleeved on the wheel rod; the driven gear is engaged with a driving gear; the driving gear is fixedly sleeved on the output end of a second speed reducer motor; the second speed reducer motor is installed on a third base; and the third base is installed on the bottom surface of the steel frame pile cap.

[0047] With the structure, the second speed reducer motor can make the wheel turn after being started.

[0048] As a further improvement of the present application, a threaded telescopic pipe is arranged between the bolt head and the second positioning sleeve, and the threaded telescopic pipe is slidably sleeved on the upper and lower chords of the embedded truss.

[0049] With the structure, the threaded telescopic pipe is rotated and elongated or shortened through threaded connection, so as to control the abutting position of the scissors brace, which is beneficial to improving the overall stability.

[0050] The present application is beneficial to the cast-in-place floor slab of a larger specification of a waiting layer in a flow water construction process, a cross frame is first formed to form a formwork truss platform, then other truss units are assembled one by one, a plurality of cross truss platforms are arranged according to grid points, then other truss platforms and embedded members are assembled, which is beneficial to constructing a larger specification truss platform, and is not limited by a track, since the entire large truss platform is assembled by a plurality of small truss platforms, the small truss platforms have a small span, so that the case of a large truss platform and a large central bending moment can be avoided, and the small truss platforms are beneficial to assembly and are suitable for constructing a flow water construction process. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 The structure of the embodiment is shown in the figure.

[0052] Figure 2Elevation view of branch truss platform assembly.

[0053] Figure 3 Enlarged view of flexible scissors brace site.

[0054] Figure 4 Installation view of threaded telescopic pipe.

[0055] Figure 5 Enlarged view of fixed scissors brace site.

[0056] Figure 6 Schematic view of quick-release platform lifting mechanism.

[0057] Figure 7 Schematic view of dismounting support.

[0058] Figure 8 Installation view of second hydraulic jack.

[0059] Figure 9 Structural view of drive wheel assembly.

[0060] Figure 10 Installation view of second speed-reducing motor.

[0061] Figure 11 Schematic view of flow construction.

[0062] Reference signs: 1, branch truss platform assembly; 101, top truss; 102, early-release support steel column; 103, disc buckle;

[0063] 2, embedded truss platform assembly; 201, embedded truss; 202, bolt head;

[0064] 203, scissors brace; 2031, diagonal web member; 2032, first positioning sleeve; 2033, lug; 2034, second positioning sleeve;

[0065] 204, threaded telescopic pipe;

[0066] 3, steel frame pile cap; 301, Bailey frame;

[0067] 4, dismounting support; 401, base plate; 402, upper support; 403, lower support; 404, T-shaped groove; 405, left support; 406, right support; 407, T-shaped sliding block; 408, counterforce frame; 409, second hydraulic jack; 410, jacking block; 411, universal ball; 410, jacking block; 412, concave sliding rail; 413, backing plate; 414, J-shaped fixing frame; 415, tripod;

[0068] 5, steel frame, 6, first hydraulic jack;

[0069] 7. Turboscrew elevator; 701. Elevating rod; 702. Positioning foot;

[0070] 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

[0071] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0072] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application; the terms “first”, “second”, “third” are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “linking” should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0073] Embodiment 1

[0074] As Figure 11As shown, a construction method based on a high-speed railway station building cast-in-place floor quick disassembly platform is adopted, and the construction is carried out in a flow process. At least 2.5 quick disassembly platforms are required, 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, and the cross-shaped quick disassembly platform is placed in the third construction section. The first and second construction sections are constructed in turn. After the first construction section floor concrete strength reaches 75%, the branch truss platform assembly 1 of the cross-shaped quick disassembly platform in the first construction section is reserved, and the branch truss platform assembly 1 of other assembly areas is transferred from the first construction section to the third construction section to complete the erection of the branch truss platform assembly 1 of the assembly area in the third construction section, thereby forming a complete quick disassembly platform on the third construction section to assemble with the quick disassembly platform on the second construction section. The reserved embedding space forms a post-cast strip; the cross-shaped quick disassembly platform on the first construction section is transferred to the fourth construction section after the concrete strength meets the 100% requirement, and the branch truss platform assembly 1 of other assembly areas is transferred from the second construction section to the fourth construction section after the second construction section floor concrete strength reaches 75%. The cross-shaped quick disassembly platform in the second construction section forms a complete quick disassembly platform with the cross-shaped quick disassembly platform transferred from the first construction section, and the subsequent construction section is completed according to the above process.

[0075] The embodiment is beneficial to the flow construction of a larger waiting floor cast-in-place floor. The cross-shaped skeleton of the formwork truss platform is formed first, and then other truss units are assembled one by one. Multiple cross-shaped truss platforms are arranged according to grid points, and other truss platforms and embedded bars are assembled. This is beneficial to building larger truss platforms that are not limited by the track. Since the entire large truss platform is assembled from multiple small truss platforms, the small truss platforms have a small span, thereby avoiding the case of excessive bending moment of the large truss platform in the middle. Moreover, the small truss platforms are beneficial to assembly and are suitable for building a flow construction process.

[0076] Embodiment 2

[0077] As shown in Figures 1-11 A high-speed railway station building cast-in-place floor quick disassembly platform includes:

[0078] The branch truss platform assembly 1 is arranged in a left-right interval and a front-rear interval to form branch truss platform assemblies 1 arranged in a cross-shaped area. The branch truss platform assemblies 1 in the assembly area divided by the cross-shaped area are arranged in the reserved embedding space with the branch truss platform assemblies 1 in the cross-shaped area. It includes a top truss 101 and an early disassembly support steel column 102 fixed at the four corners of the top truss 101. The early disassembly support steel column 102 is fixed with a sleeve joint disc buckle 103.

[0079] The embedded truss platform assembly 2 is arranged between the spaced branch truss platform assemblies 1, and includes an embedded truss 201 and a latch head 202 fixed at both ends of the top and bottom chords of the embedded truss 201, and the latch head 202 is inserted into the disc buckle 103.

[0080] With such a structure, the branch truss platform assemblies 1 are connected through the embedded truss platform assembly 2 and form a cross-shaped framework, and other branch truss platform assemblies 1 are assembled one by one on the cross-shaped framework, which is beneficial to improve the assembly efficiency, and the latch head 202 is inserted into the disc buckle 103, which is beneficial to the rapid assembly of the embedded truss 201.

[0081] In the embodiment, the scissors brace 203 is arranged between the top and bottom chords of the embedded truss 201.

[0082] With such a structure, the scissors brace 203 is beneficial to guarantee the overall stability of the embedded truss 201.

[0083] In the embodiment, the scissors brace 203 includes mutually intersecting inclined web members 2031, the middle part of the inclined web member 2031 is sleeved with a first positioning sleeve 2032, and adjacent two first positioning sleeves 2032 are connected through a pin shaft; both ends of the inclined web member 2031 are hingedly connected with lugs 2033; the lug 2033 is fixed on a second positioning sleeve 2034, and the second positioning sleeve 2034 is slidingly connected on the top chord and the bottom chord and moves to a position close to the latch head 202.

[0084] With such a structure, the two first positioning sleeves 2032 are connected through a pin shaft and can rotate, which is beneficial to adjust the distance between the top and bottom chords, so that the latch head 202 can be flexibly inserted into the disc buckle 103 to adapt to disc buckles 103 of different heights, and after the second positioning sleeve 2034 slides, it can abut against the disc buckle 103 to form clamping of the disc buckle 103, and the disc buckle 103 provides a limiting effect to prevent further sliding of the second positioning sleeve 2034, so that the scissors brace 203 forms a stable structure.

[0085] In the embodiment, the early disassembly support steel column 102 is provided with a quick disassembly platform lifting mechanism at the lower end, and the quick disassembly platform lifting mechanism includes:

[0086] The steel frame pile cap 3 is assembled by using a Bailey truss 301;

[0087] The unloading support 4 is installed on the bottom surface of the middle part of the steel frame pile cap 3;

[0088] The steel frame 5 is installed on the upper surface of the middle part of the steel frame pile cap 3;

[0089] The first hydraulic jack 6 is installed in the steel frame 5, the bottom of the first hydraulic jack 6 is installed on the upper surface of the middle part of the steel frame pile cap 3, and the piston end of the first hydraulic jack 6 is installed with the early disassembly support steel column 102;

[0090] Turbine screw lift 7, which is installed in the four corners of steel frame platform 3; the lower end of its lifting rod 701 penetrates through steel frame platform 3 and is installed with positioning feet 702;

[0091] Driving wheel assembly 8, which is installed in the four corners of steel frame platform 3 and is spaced from lifting rod 701.

[0092] With such a structure, the quick-release platform lifting mechanism is conducive to moving and lifting the branch truss platform assembly 1 and facilitating flexible assembly between the branch truss platform assemblies 1.

[0093] In this embodiment, the unloading support 4 comprises a base plate 401 installed on the bottom surface of the steel frame platform 3;

[0094] An upper support 402 installed below base plate 401;

[0095] A lower support 403 arranged in space below upper support 402,

[0096] A T-shaped groove 404 opened on the wedge surface of upper support 402 and lower support 403;

[0097] A left support 405 and a right support 406, which are slidingly assembled between upper support 402 and lower support 403 and are slidingly installed on the left and right wedge surfaces of upper support 402 and lower support 403;

[0098] A T-shaped slider 407 fixed to the bottom surface of left support 405 and right support 406 and slidingly fitted with T-shaped groove 404;

[0099] A counterforce frame 408 installed in pairs on the bottom surface of steel frame platform 3 and spaced from left support 405 and right support 406, respectively;

[0100] A second hydraulic jack 409 installed in pairs on counterforce frame 408, with the opposite piston ends respectively facing left support 405 and right support 406;

[0101] A pushing block 410 installed on the piston end of second hydraulic jack 409;

[0102] A universal ball 411 installed on the front and back of pushing block 410, with the universal ball 411 installed on the front of pushing block 410 abutting left support 405 and right support 406;

[0103] A concave slide rail 412 installed on the back of left support 405 and right support 406 and extended by pushing block 410, with the universal ball 411 installed on the back of pushing block 410 abutting concave slide rail 412.

[0104] With such structure, through the telescopic movement of the second hydraulic jack 409, the left support 405 and the right support 406 can be driven to move along the wedge surfaces of the upper support 402 and the lower support 403, so as to lift or unload the lower support 403, so that the lower support 403 can be away from or contact with the ground; in cooperation with the steel pile cap 3, the central load of the steel pile cap 3 is transmitted to the ground, and at the same time, the steel pile cap 3 is subjected to the action of resisting the central bending moment.

[0105] In the embodiment, the bottom surface of the lower support 403 is provided with a pad plate 413.

[0106] With such structure, the pad plate 413 is beneficial to expand the rigid ground stress area.

[0107] In the embodiment, the concave slide rails 412 are arranged side by side and spaced apart, the piston end of the second hydraulic jack 409 is inserted between the two concave slide rails 412, the top pushing block 410 is inserted between the concave slide rail 412 and the left support 405, and the top pushing block 410 is inserted between the concave slide rail 412 and the right support 406.

[0108] The back surface of the concave slide rail 412 is provided with a horizontal J-shaped fixing frame 414, one end of the J-shaped fixing frame 414 is fixed to the back surface of the left support 405 and the right support 406, and the other end is fixed to the back surface of the concave slide rail 412.

[0109] The J-shaped fixing frame 414 is fixed with a tripod 415 at the corner.

[0110] The top pushing block 410 is a stepped circular table type.

[0111] With such 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 beneficial to stabilize the corner part; and the top pushing block 410 is a stepped circular table type, which is convenient for installing the front and back universal ball 411 and provides sufficient installation space for the front and back universal ball 411.

[0112] In the embodiment, the drive wheel assembly comprises a first base 801, a wheel rod 802 rotatably mounted on the bottom surface of the first base 801, a wheel frame 803 mounted on the bottom surface of the wheel rod 802, bearings 805 mounted in the two side plates 804 of the wheel frame 803, an axle 806 penetrating through the bearings 805, and wheels 807 fixedly connected to the axle 806.

[0113] With such structure, the first reduction motor 809 drives the wheels to rotate, so that the steel pile cap 3 can be translated as a whole, which is beneficial to move to a specified position.

[0114] In the embodiment, the wheel rod 802 is fixedly sleeved with a driven gear 810; the driven gear 810 is engaged with a driving gear 811; the driving gear 811 is fixedly sleeved on an output end of a second speed reducer 812; the second speed reducer 812 is installed on a third base 813; and the third base 813 is installed on the bottom surface of the steel frame support platform 3.

[0115] With the structure, the second speed reducer 812 can drive the wheel to turn after being started.

[0116] In the embodiment, a threaded telescopic pipe 204 is arranged between the bolt head 202 and the second positioning sleeve 2034; and the threaded telescopic pipe 204 is slidably sleeved on the upper and lower chords of the embedded truss 201.

[0117] With the structure, the threaded telescopic pipe 204 is rotated and elongated or shortened through threaded connection to control the abutting position of the scissors brace 203, which is beneficial to improve the overall stability.

[0118] The embodiment is beneficial to form the cross frame in the truss platform, is beneficial to assembly, and the cross frame is formed first, then other truss units are assembled one by one, a plurality of cross truss platforms are arranged according to the grid points, then other truss platforms and embedded repair bars are assembled, which is beneficial to build a larger truss platform, and the truss platform is not limited by the track. Since the entire large truss platform is assembled by a plurality of small truss platforms, the span of the small truss platform is small, so that the situation that the large truss platform has a large bending moment in the middle can be avoided.

[0119] The above is a further detailed description of the present application in combination with a specific preferred embodiment, and the specific implementation of the present application cannot be limited to the description. For those skilled in the art to which the present application belongs, without departing from the concept of the present application, a number of equivalent substitutions or obvious modifications can be made, and the performance or use is the same, which should be regarded as belonging to the protection scope of the present application.

Claims

1. A construction method based on a high-speed rail station building cast-in-place floor quick disassembly platform, characterized by Includes the following steps: S1: Construct a planar control grid, divide the construction into sections, configure two complete quick-release platforms on the first and second construction sections, 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 (1) of other assembly areas. The cross-shaped quick-release platform itself is also assembled from the branch truss platform components (1). The branch truss platform components (1) are arranged longitudinally and laterally according to the planar control grid. The truss is inserted at the interval between two adjacent branch truss platform components (1) to achieve assembly. S2: The first and second construction sections are constructed in sequence. After the concrete formwork 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 component (1) that forms the cross-shaped quick-release platform in the first construction section is retained. The branch truss platform component (1) of other assembly areas is transferred from the first construction section to the third construction section. It is assembled with the cross-shaped quick-release platform configured on the third construction section to form a complete quick-release platform. The concrete formwork of the third construction section is poured and cured. The quick-release platform of the third construction section and the quick-release platform of the second construction section form a post-pouring strip with the reserved interlocking space. After the interlocking truss is filled, it 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-release 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-release platform in the second construction section is retained. The branch truss platform components (1) of other assembly areas are transferred from the second construction section to the fourth construction section and form a complete quick-release platform with the cross-shaped quick-release platform transferred on the first construction section. Then, the formwork is erected and the concrete is poured and cured. The quick-release platform of the fourth construction section and the quick-release platform of the third construction section are reserved to form a post-pouring strip. After the truss is filled, the concrete is poured to merge the concrete on the fourth construction section and the third construction section. S4: Complete the construction of the subsequent construction sections according to the construction steps of S2-S3.

2. A high-speed rail station building cast-in-place floor fast disassembly platform, characterized in that include: Branch truss platform components (1) are arranged with left and right intervals and front and back intervals to form branch truss platform components (1) arranged in a cross-shaped area. Then, corresponding branch truss platform components (1) are arranged on the assembly area divided by the cross-shaped area. The branch truss platform components (1) in the assembly area and the branch truss platform components (1) in the cross-shaped area are reserved for interlocking space. It includes a top truss (101) and early-stripping support steel columns (102) fixed at the four corners of the top truss (101), with a fixed sleeve buckle (103) on the early-stripping support steel column (102). The interlocking truss platform assembly (2) is arranged between the spaced branch truss platform assemblies (1), and includes an interlocking truss (201) and pin heads (202) fixed at both ends of the upper and lower chords of the interlocking truss (201), the pin heads (202) being inserted into the disc buckle (103); The interlocking truss (201) is provided with scissor bracing (203) between the upper and lower chords. The early disassembly support steel column (102) is provided with a quick disassembly platform lifting mechanism at the lower end, and the quick disassembly platform lifting mechanism comprises: The steel frame pile cap (3) is assembled by using the bailey frame (301); The unloading support (4) is installed on the bottom surface of the middle part of the steel frame pile cap (3); The steel frame (5) is installed on the upper surface of the middle part of the steel frame pile cap (3); The first hydraulic jack (6) is installed in the steel frame (5), the bottom of the first hydraulic jack (6) is installed on the upper surface of the middle part of the steel frame pile cap (3), and the piston end of the first hydraulic jack (6) is installed with the early disassembly support steel column (102); The turbine screw elevator (7) is installed at the four corner positions of the steel frame pile cap (3); the lifting rod (701) of the turbine screw elevator (7) penetrates through the steel frame pile cap (3) and is installed with the positioning foot (702); The driving wheel assembly (8) is installed at the four corner positions of the steel frame pile cap (3) and is spaced from the lifting rod (701); The unloading support (4) comprises a base plate (401) installed on the bottom surface of the steel frame pile cap (3); The upper support (402) is installed below the base plate (401); The lower support (403) is arranged in the lower part of the upper support (402) in a spaced manner, The T-shaped groove (404) is arranged on the wedge surface of the upper support (402) and the lower support (403); The left support (405) and the right support (406) are slidingly assembled between the upper support (402) and the lower support (403) and are slidingly installed on the left and right wedge surfaces of the upper support (402) and the lower support (403); The T-shaped slider (407) is fixed to the bottom surfaces of the left support (405) and the right support (406) and is slidingly matched with the T-shaped groove (404); The counterforce frame (408) is installed in pairs on the bottom surface of the steel frame pile cap (3) and is spaced from the left support (405) and the right support (406) respectively; The second hydraulic jack (409) is installed in pairs on the counterforce frame (408), and the opposite piston ends of the second hydraulic jack (409) are respectively directed to the left support (405) and the right support (406); The thrust block (410) is installed at the piston end of the second hydraulic jack (409); The universal ball (411) is installed on the front surface and the back surface of the thrust block (410), and the universal ball (411) installed on the front surface of the thrust block (410) abuts against the left support (405) and the right support (406); The concave slide rail (412) is installed on the back surface of the left support (405) and the right support (406) and is extended into the thrust block (410), and the universal ball (411) installed on the back surface of the thrust block (410) abuts against the concave slide rail (412); The bottom surface of the lower support (403) is installed with the pad (413).

3. The high-speed rail station building cast-in-place floor quick disassembly platform according to claim 2, characterized in that The scissor brace (203) comprises mutually intersecting inclined web members (2031), the middle part of the inclined web member (2031) is sleeved with a first positioning sleeve (2032), and adjacent two first positioning sleeves (2032) are connected by a pin shaft; the two ends of the inclined web member (2031) are hinged with lugs (2033); the lug (2033) is fixed on a second positioning sleeve (2034), the second positioning sleeve (2034) is slidingly connected on the upper chord and the lower chord and is moved to a position close to the bolt head (202).

4. The high-speed rail station building cast-in-place floor quick disassembly platform according to claim 2, characterized in that The concave slide rails (412) are arranged side by side and are spaced apart, the piston end of the second hydraulic jack (409) extends between the two concave slide rails (412), 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); The concave slide rail (412) is provided with a horizontal J-shaped fixing frame (414) on the back surface, one end of the J-shaped fixing frame (414) is fixed on the back surface of the left support (405) and the right support (406), and the other end is fixed on the back surface of the concave slide rail (412); The J-shaped fixing frame (414) is provided with a tripod (415) at the corner; The push block (410) is a stepped circular table type.

5. The high-speed rail station building cast-in-place floor quick disassembly platform according to claim 2, characterized in that The driving wheel assembly (8) comprises a first base (801), a wheel rod (802) rotatably mounted on the bottom surface of the first base (801), a wheel frame (803) mounted on the bottom surface of the wheel rod (802), bearings (805) mounted in the two side plates (804) of the wheel frame (803), an axle (806) penetrating through the bearings (805), and wheels (807) fixedly connected to the axle (806); a second base (808) is mounted on the outer side of one side plate (804) of the wheel frame (803), a first speed reduction motor (809) is mounted on the lower surface of the second base (808), and the output end of the first speed reduction motor (809) is coaxially fixedly connected with the axle (806).

6. The high-speed rail station building cast-in-place floor quick disassembly platform according to claim 5, characterized in that A driven gear (810) is fixedly sleeved on the wheel rod (802); the driven gear (810) is engaged with a driving gear (811); the driving gear (811) is fixedly sleeved on the output end of a second speed reduction motor (812), the second speed reduction motor (812) is mounted on a third base (813), and the third base (813) is mounted on the bottom surface of the steel frame pile cap (3).

Images