A support and template system overall rapid transfer system and construction method

Abstract

A system and construction method for the overall rapid transfer of a support and formwork system, comprising a channel steel at the bottom of a socket-type disc-type scaffold, a traction beam and a winch, wherein the traction beam is connected to the channel steel through a steel beam connecting buckle, and the traction beam is connected to the winch through a wire rope. The invention solves the problems of repeated erection and dismantling of formwork supports, large investment in personnel and equipment, long construction period, and large material loss in traditional processes for the overall transfer construction process of cast-in-place tunnel top plate formwork supports in confined spaces, thereby reducing construction safety risks.

Description

Technical Field

[0001] The invention relates to the field of tunnel construction, and in particular to an integral rapid transfer system of a support and template system and a construction method. Background Art

[0002] At present, there are two main cast-in-place tunnel formwork construction technologies in China. Large hydraulic combined steel formwork technology is usually used in open working spaces, and formwork and support repeated erection and disassembly construction technology is usually used in confined working spaces. There are few applications of large support formwork system overall transfer technology for confined spaces.

[0003] The tunnel working surface is very narrow, and the density of on-site machinery, equipment, personnel and materials is high, making it impossible to use large hydraulic composite steel formwork. When using traditional construction technology to construct each section, it is necessary to repeatedly set up and dismantle the top plate formwork and support, and the construction is time-consuming and the process is cumbersome. Summary of the invention

[0004] In order to solve the problems of repeated erection and dismantling of top plate formwork and supports for casting tunnels in confined spaces, complicated procedures and long construction periods, the present invention provides a construction method for rapid transfer of the entire support and formwork system in a confined space, thereby solving the problem of greater safety risks of high-support formwork for cast-in-place tunnels in confined spaces.

[0005] The technical solution adopted by the present invention is:

[0006] The invention discloses an integral rapid transfer system of a support and formwork system, comprising a channel steel at the bottom of a socket-type disc-locked scaffold, a traction beam and a winch, wherein the traction beam is connected to the channel steel through a steel beam connecting buckle, and the traction beam is connected to the winch through a steel wire rope.

[0007] The channel steel at the bottom of the socket-and-spigot disc-type scaffold is a U-shaped channel steel, and the bottom U-shaped channel steel is connected into a whole using M20 bolts.

[0008] The steel beam connecting buckle comprises a double-ear plate connected to the traction cross beam, the double-ear plate is rotatably connected to a cross connecting plate through a bolt shaft, and the cross connecting plate is fixed in a steel channel of the U-shaped channel steel.

[0009] The vertical plate in the cross connecting plate is connected in the middle of the double-ear plate through a bolt shaft, and the horizontal plate of the cross connecting plate is fixed on the inner side wall of the U-shaped channel steel.

[0010] The double-ear plate is provided with a hook slot connected to the traction beam, and the hook slots on both sides of the double-ear plate are fixed with side wing plates that can be connected to the traction beam through bolts.

[0011] A construction method for the overall rapid transfer of a support and formwork system, the steps of which are:

[0012] (1) Preparation work before formwork traction: tunnel concrete pouring and curing, establishment of tunnel roof formwork system and formwork transfer system, loosening of adjustable panels, and ensuring that formwork modules are separated and demoulded from each other;

[0013] (2) Formwork linear traction: The module is split into multiple units, and each unit is pulled to the next casting section in turn; the bottom U-shaped channel steel is connected into a whole using connectors to realize the overall transportation of multiple formwork units;

[0014] (3) Individual traction of formwork: When the angle of the exterior wall changes, considering that the formwork units near the wall are affected by the structural chamfer form, this group of formwork units needs to be individually tractioned. During traction, in order to ensure that the force system of the formwork unit is stable and reliable, the bolts at the connection position of the U-channel steel are removed to achieve individual traction of the modular unit;

[0015] (4) Formwork traction process: The top plate formwork is transferred by lowering the panel of the top plate formwork system and then using a winch to pull the table formwork in groups to move the formwork to the working surface of the next construction area to form a flow construction;

[0016] (5) Adjust the formwork into place: Adjust the panels of the top plate formwork system in the next construction area so that the top plate formwork is installed in place.

[0017] The tunnel roof formwork system includes a socket-type disc-type scaffolding, double-jointed channel steel, wooden beams and panels, the double-jointed channel steel is fixed on the top of the socket-type disc-type scaffolding, a plurality of wooden beams are fixed on the double-jointed steel channel, and the panels are fixed on the top of the wooden beams, and the panels are supported on the lower surface of the tunnel concrete;

[0018] During the preparation work before the template traction, a safety protection device is installed on the edge of the top plate template, and the traction line is kept flat and tidy.

[0019] The template traction process is to first check and install the traction beam before the module is transferred, check whether the connection is tight after the installation is completed, connect and reinforce it with the winch through the wire rope, and start the winch to pull the template system after the connection is completed.

[0020] Beneficial effects of the invention: The invention solves the problems of repeated erection and dismantling of formwork supports, large investment in personnel and equipment, long construction period, large material loss, etc. in traditional processes for the overall transfer construction process of cast-in-place tunnel roof formwork supports in confined spaces, thereby reducing construction safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of separation between template modules of the present invention.

[0022] Figure 2 It is a schematic plan view of the template linear traction of the present invention.

[0023] Figure 3 It is a schematic diagram of the separate traction plane of the template of the present invention.

[0024] Figure 4 It is a schematic diagram of the connection structure between channel steels of the present invention.

[0025] Figure 5 It is a schematic diagram of the connection structure of the channel steel and the traction beam in the same plane of the present invention.

[0026] Figure 6 It is a schematic diagram of the connection structure of the channel steel and the traction beam in different planes of the present invention.

[0027] Figure 7 It is a plan view schematic diagram of the connection between the channel steel and the traction beam of the present invention.

[0028] Among them: 1-socket-type disc-type scaffolding; 2-double-jointed channel steel; 3-wooden beam; 4-panel; 5-channel steel; 6-horizontal board; 7-vertical board; 8-bolt; 9-wire rope; 10-traction beam; 11-steel beam connecting buckle; 12-double-ear plate; 13-bolt shaft; 14-cross connecting plate; 15-side wing plate; 16-hook slot. DETAILED DESCRIPTION

[0029] A support and formwork system overall rapid transfer system, including a socket-type disc-type scaffold 1 bottom channel steel 5, a traction beam 10 and a winch, the traction beam 10 is connected to the channel steel 5 through a steel beam connecting buckle 11, and the traction beam 10 is connected to the winch through a wire rope 9.

[0030] The channel steel 5 at the bottom of the socket-type disc-locked scaffold 1 is a U-shaped channel steel, and the bottom U-shaped channel steel 5 is connected into a whole using M20 bolts 8.

[0031] The steel beam connecting buckle 11 includes a double-ear plate 12 connected to the traction beam 10 , and the double-ear plate 12 is rotatably connected to a cross connecting plate 14 through a bolt shaft 13 , and the cross connecting plate 14 is fixed in the steel channel of the U-shaped channel steel 5 .

[0032] The vertical plate 7 in the cross connecting plate 14 is connected to the middle of the double-ear plate 12 through the bolt shaft 13, and the horizontal plate 6 of the cross connecting plate 14 is fixed on the inner side wall of the U-shaped channel steel 5.

[0033] The double-ear plate 12 is provided with hook slots 16 connected to the traction beam 10 , and side wing plates 15 that can be connected to the traction beam 10 by bolts are fixed at the hook slots 16 on both sides of the double-ear plate 12 .

[0034] A construction method for the overall rapid transfer of a support and formwork system, the steps of which are:

[0035] (1) Preparation work before formwork traction: tunnel concrete pouring and curing, establishment of tunnel roof formwork system and formwork transfer system, loosening of adjustable panel 4, and ensuring that formwork modules are separated and demoulded from each other;

[0036] (2) Formwork linear traction: The module is split into multiple units, and each unit is pulled to the next casting section in turn; the bottom U-shaped channel steel 5 is connected as a whole using connectors to realize the overall transportation of multiple formwork units;

[0037] (3) Individual traction of the formwork: When the angle of the exterior wall changes, considering that the formwork units near the wall are affected by the structural chamfer form, this group of formwork units needs to be individually tractioned. During traction, in order to ensure that the force system of the formwork unit is stable and reliable, the bolts 8 at the connection position of the U-shaped channel steel 5 are removed to achieve individual traction of the modular unit;

[0038] (4) Formwork pulling process: The top plate formwork is transferred by lowering the panel 4 of the top plate formwork system and then using a winch to pull the table formwork in groups to move the formwork to the working surface of the next construction area to form a flow construction;

[0039] (5) Adjust the formwork into place: Adjust the panel 4 of the top plate formwork system in the next construction area so that the top plate formwork is installed in place.

[0040] The tunnel roof formwork system includes a socket-type disc-type scaffolding 1, a double-jointed channel steel 2, a wooden beam 3 and a panel 4, wherein the double-jointed channel steel 2 is fixed on the top of the socket-type disc-type scaffolding 1, a plurality of wooden beams 3 are fixed on the double-jointed steel channel 2, and the panel 4 is fixed on the top of the wooden beam 3, and the panel 4 is supported on the lower surface of the tunnel concrete;

[0041] During the preparation work before the template traction, a safety protection device is installed on the edge of the top plate template, and the traction line is kept flat and tidy.

[0042] The template traction process is to first check and install the traction beam 10 before the module is transferred, check whether the connection is tight after the installation is completed, connect and reinforce it with the winch through the wire rope 9, and start the winch to pull the template system after the connection is completed.

[0043] The present invention will be described in detail below with reference to specific embodiments:

[0044] The buried tunnel section of the West Artificial Island has limited construction space.

[0045] A construction method for the overall rapid transfer of a support and formwork system, the steps of which are:

[0046] (1) Preparation work before formwork traction: pouring and curing of tunnel concrete, establishing the tunnel roof formwork system and formwork transfer system, loosening the adjustable panel 4, ensuring that the formwork modules are separated and demolded from each other. The tunnel roof formwork system includes a socket-type disc-type scaffolding 1, 14# double-jointed channel steel 2, 24# wooden beams 3 and 21mm panels 4. The double-jointed channel steel 2 is fixed on the top of the socket-type disc-type scaffolding 1, multiple wooden beams 3 are fixed on the double-jointed steel channel 2, and the panel 4 is fixed on the top of the wooden beam. The panel 4 is supported on the lower surface of the tunnel concrete; formwork The transfer system includes the channel steel 5 at the bottom of the socket-type disc-lock scaffold 1, the traction beam 10 and the winch. The traction beam 10 is connected to the channel steel 5 through the steel beam connection buckle 11, and the traction beam 10 is connected to the winch through the wire rope 9; a safety protection device is installed on the edge of the top plate template, and the traction line is kept flat and tidy; the steel beam connection buckle 11 includes a double-ear plate 12 connected to the traction beam 10, and the double-ear plate 12 is rotatably connected to a cross connecting plate 14 through a bolt shaft 13, and the cross connecting plate 14 is fixed in the steel groove of the U-shaped channel steel 5. The vertical plate 7 in the cross connecting plate 14 is connected to the middle of the double-ear plate 12 through the bolt shaft 13, and the horizontal plate 6 of the cross connecting plate 14 is fixed on the inner side wall of the groove of the U-shaped channel steel 5. The double-ear plate 12 is provided with a hook slot 16 connected to the traction beam 10, and the hook slots 16 on both sides of the double-ear plate 12 are fixed with side wing plates 15 that can be connected to the traction beam 10 by bolts.

[0047] (2) Straight traction of the formwork: the module is split into multiple units, and each unit is pulled to the next casting section in turn; the bottom U-shaped channel steel 5 is connected as a whole using a connector to realize the overall transportation of multiple formwork units. The channel steel 5 at the bottom of the socket-type disc buckle scaffolding 1 is a U-shaped channel steel, and the bottom U-shaped channel steel 5 is connected as a whole using an M20 bolt 8;

[0048] (3) Individual traction of the formwork: When the angle of the exterior wall changes, considering that the formwork units near the wall are affected by the structural chamfer form, this group of formwork units needs to be individually tractioned. During traction, in order to ensure that the force system of the formwork unit is stable and reliable, the bolts 8 at the connection position of the U-shaped channel steel 5 are removed to achieve individual traction of the modular unit;

[0049] (4) Formwork traction process: The top plate formwork is transferred by lowering the panel 4 of the top plate formwork system and then using a winch to pull the table formwork in groups to move the formwork to the working surface of the next construction area to form a flow construction. The specific formwork traction process is to first check and install the traction beam 10 before the module is transferred, and check whether the connection is tight after the installation. After the inspection is completed, it is connected and reinforced with the winch through the wire rope 9. After the connection is completed, the winch is started to pull the formwork system;

[0050] (5) Adjust the formwork into place: Adjust the panel 4 of the top plate formwork system in the next construction area so that the top plate formwork is installed in place.

[0051] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A construction method for the overall rapid transfer of a support and formwork system, using a support and formwork system overall rapid transfer system, characterized in that: The transfer system comprises a channel steel (5) at the bottom of a socket-type disc-lock scaffold (1), a traction beam (10) and a winch, wherein the traction beam (10) is connected to the channel steel (5) through a steel beam connecting buckle (11), and the traction beam (10) is connected to the winch through a steel wire rope (9); the channel steel (5) at the bottom of the socket-type disc-lock scaffold (1) is a U-shaped channel steel, and the bottom U-shaped channel steel (5) is connected to form a whole by using M20 bolts (8); the steel beam connecting buckle (11) comprises a double-ear plate (12) connected to the traction beam (10), and the double-ear plate (12) is connected to the winch through a bolt shaft (13) is rotatably connected with a cross connecting plate (14), which is fixed in the steel groove of the U-shaped channel steel (5); the vertical plate (7) in the cross connecting plate (14) is connected to the middle of the double ear plate (12) through a bolt shaft (13), and the horizontal plate (6) of the cross connecting plate (14) is fixed on the inner side wall of the groove of the U-shaped channel steel (5); the double ear plate (12) is provided with a hook slot (16) connected to the traction cross beam (10), and the side wing plates (15) connected to the traction cross beam (10) by bolts are fixed at the hook slots (16) on both sides of the double ear plate (12); The specific steps of the construction method are: a. Preparation work before formwork traction: tunnel concrete pouring and curing, establishment of tunnel roof formwork system and formwork transfer system, loosening of adjustable panel (4), ensuring that formwork modules are separated and demoulded from each other; b. Straight traction of the template: the module is split into multiple units, and each unit is pulled to the next casting section in turn; the bottom U-shaped channel steel (5) is connected as a whole using a connector to realize the overall transportation of multiple template units; c. Individual traction of the formwork: When the angle of the exterior wall changes, considering that the formwork units near the wall are affected by the structural chamfer form, this group of formwork units needs to be individually tractioned. During traction, in order to ensure that the force system of the formwork units is stable and reliable, the bolts (8) at the connection position of the U-shaped channel steel (5) are removed to achieve individual traction of the modular units; d. Formwork pulling process: The top plate formwork is transferred by lowering the panel (4) of the top plate formwork system and then using a winch to pull the table formwork in groups to move the formwork to the working surface of the next construction area to form a flow construction; e. Adjust the formwork into place: In the next construction area, adjust the panel (4) of the top plate formwork system to install the top plate formwork in place.

2. The construction method for the overall rapid transfer of the support and formwork system according to claim 1 is characterized in that: The tunnel roof template system comprises a socket-type disc-type scaffolding (1), a double-jointed channel steel (2), a wooden beam (3) and a panel (4), wherein the double-jointed channel steel (2) is fixed on the top of the socket-type disc-type scaffolding (1), a plurality of wooden beams (3) are fixed on the double-jointed channel steel (2), and a panel (4) is fixed on the top of the wooden beam (3), and the panel (4) is supported on the lower surface of the tunnel concrete.

3. The construction method for the overall rapid transfer of the support and formwork system according to claim 2 is characterized in that: During the preparation work before the template traction, a safety protection device is installed on the edge of the top plate template, and the traction line is kept flat and tidy.

4. The construction method for the overall rapid transfer of the support and formwork system according to claim 3 is characterized in that: The template traction process is to first check and install the traction beam (10) before the module is transferred, and check whether the connection is tight after the installation is completed. After the inspection is completed, it is connected and reinforced with the winch through the wire rope (9). After the connection is completed, the winch is started to pull the template system.

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