Double-gate-groove gate shaft concrete formwork and construction method thereof

Abstract

The invention discloses a double-gate-groove gate vertical shaft concrete formwork and a construction method thereof.The formwork comprises a formwork structure and a supporting structure which are both arranged in a vertical shaft, the supporting structure is arranged in the formwork structure, and the supporting structure and the formwork structure are connected through a connecting structure; a plurality of groups of positioning assemblies are arranged at the bottom of the outer side surface of the template structure; the method comprises the following steps: 1, assembling and hoisting a concrete formwork; 2, pouring concrete; thirdly, the concrete formwork is removed; 4, fixing the position of the concrete formwork; and 5, construction of the next layer of vertical shaft section. The supporting structure and the formwork structure are combined, and supporting and guarantee are provided for pouring in the vertical shaft; the positioning assembly at the bottom of the formwork structure is used for positioning and fixing the concrete formwork when the vertical shaft is poured section by section; in addition, through overall contraction of the formwork structure, the concrete formwork is convenient to dismantle, the construction period is effectively shortened, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of vertical shaft construction of water conservancy and hydropower engineering, and in particular relates to a double-gate slot gate vertical shaft concrete template and a construction method thereof. Background Art

[0002] During the shaft construction, as the excavation and support of the shaft and the lower reservoir inlet and outlet tunnels were completed, the construction of this part was fully transferred to the concrete lining of the shaft and the lower reservoir inlet and outlet tunnels. The traditional concrete lining method is to set up a combination formwork in the shaft, support the formwork and pour concrete along the depth direction of the shaft; but the formwork in the traditional shaft construction has the following shortcomings: first, the integrity and safety of the combination formwork or multi-card formwork are insufficient during construction; in addition, the time required for the removal and installation of the combination formwork or multi-card formwork is long, which cannot meet the needs of projects with tight construction schedules; finally, the time required for the removal and installation of the combination formwork or multi-card formwork is long, which invisibly increases the construction cost. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a double-gate slot gate shaft concrete template in view of the deficiencies in the above-mentioned prior art, which, combined with the supporting structure and the template structure, provides support and guarantee for pouring in the shaft; utilizes the positioning assembly at the bottom of the template structure to achieve positioning and fixing of the concrete template during the process of pouring the shaft section by section, and the overall structure constituting the concrete template can be reused, saving construction costs.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a double-gate slot gate shaft concrete template, characterized in that: it includes a template structure and a support structure both arranged in the shaft, the template structure is arranged along the circumferential direction of the shaft, the support structure is arranged in the template structure, and the support structure and the template structure are connected by a connecting structure; a plurality of positioning components are arranged at the bottom of the outer side surface of the template structure; The template structure includes two symmetrically arranged door slot template components, and a straight side template and an arc-shaped side template arranged between the two door slot template components, the two door slot template components, the straight side template and the arc-shaped side template are integrally formed, and the two door slot template components, the straight side template and the arc-shaped side template form a closed template structure; The door slot template assembly includes a first door slot template unit and a second door slot template unit, the first door slot template unit and the second door slot template unit have the same structural dimensions, the first door slot template unit and the second door slot template unit are connected via a connecting panel, the first door slot template unit and the connecting panel, as well as the second door slot template unit and the connecting panel are fixedly connected; the straight side template is connected between the two first door slot template units, and the straight side template and the first door slot template unit are fixedly connected; the curved side template is connected between the two second door slot template units, and the curved side template and the second door slot template unit are fixedly connected; The first door groove template unit and the second door groove template unit each include two L-shaped side templates and a door groove template arranged between the two L-shaped side templates, the L-shaped side template and the door groove template are connected by a plurality of first door groove connecting components; the two L-shaped side templates and the door groove template form a door-shaped door groove template structure, and the opening of the door groove template structure faces the supporting structure; a plurality of second door groove connecting components are connected between the two L-shaped side templates; The door slot template includes a U-shaped template vertically arranged between the two L-shaped side templates and a door slot template support adjustment component arranged in the opening of the U-shaped template; the opening of the U-shaped template faces the supporting structure, the two ends of the U-shaped template are respectively connected to the two L-shaped side templates, and the U-shaped template and the L-shaped side template are fixedly connected; the door slot template support adjustment component includes a plurality of horizontally adjustable support members all horizontally arranged at the opening of the U-shaped template and a plurality of vertically adjustable support members all horizontally arranged in the opening of the U-shaped template, and the horizontally adjustable support members and the vertically adjustable support members are perpendicular to each other; The support structure comprises an upper support frame, a middle support frame and a lower support frame which are arranged horizontally from top to bottom, the upper support frame, the middle support frame and the lower support frame are connected by a plurality of support columns, and the upper support frame, the middle support frame, the lower support frame and the support columns are integrally formed; The connection structure includes an upper connection assembly, a middle connection assembly, a lower connection assembly, and a plurality of suspension support frames arranged at the bottom of the lower support frame. A plurality of positioning components are respectively arranged at the bottom of the outer side surfaces of the straight side formwork and the arc side formwork, and the positioning components include a pre-embedded positioning cone in the pre-embedded concrete and a positioning bolt matched with the pre-embedded positioning cone.

[0005] The above-mentioned double-gate slot gate shaft concrete formwork is characterized in that: a plurality of the first gate slot connecting components are evenly arranged along the height direction of the gate slot formwork, the first gate slot connecting component includes a horizontal connecting plate horizontally arranged on the L-shaped side formwork and arranged in the gate slot formwork structure and a first gate slot connecting screw arranged between the two horizontal connecting plates, the horizontal connecting plate is arranged at one end of the L-shaped side formwork close to the gate slot formwork, and the horizontal connecting plate and the L-shaped side formwork are integrally formed.

[0006] The above-mentioned double-gate slot gate shaft concrete formwork and construction method thereof are characterized in that: a plurality of the second gate slot connection components are evenly arranged along the height direction of the gate slot formwork, and the second gate slot connection component includes a gate slot connection plate horizontally arranged between two L-shaped side formworks, and a second gate slot connection screw connected between the L-shaped side formworks and the gate slot connection plate, and the gate slot connection plate and the second gate slot connection screw are perpendicular to each other.

[0007] The above-mentioned double-gate slot gate shaft concrete formwork is characterized in that: a plurality of horizontally adjustable support members are evenly arranged along the height direction of the U-shaped formwork, and the horizontally adjustable support members include two horizontal support members both horizontally arranged on one side of the U-shaped formwork, a horizontal plug-in plate horizontally arranged on the other side of the U-shaped formwork, and a first plug-in wedge vertically penetrated through the horizontal support members and the horizontal plug-in plate. The two horizontal support members are symmetrically arranged on one side of the opening of the U-shaped formwork, and a gap for the horizontal plug-in plate to be inserted is provided between the two horizontal support members. The horizontal support members and the horizontal plug-in plate are both provided with long strip through holes for the first plug-in wedge to pass through.

[0008] The above-mentioned double-gate slot gate shaft concrete formwork is characterized in that: a plurality of the vertically adjustable support members are evenly arranged along the height direction of the U-shaped formwork, and the vertically adjustable support members include a vertical connecting plate horizontally arranged in the opening of the U-shaped formwork, one end of the vertical connecting plate is connected to the U-shaped formwork through a first fixing component, and the other end of the vertical connecting plate is provided with a second plug-in wedge.

[0009] The above-mentioned double-gate slot gate shaft concrete formwork is characterized in that: the first fixing assembly includes two vertically arranged vertical support members, a vertical plug-in plate inserted between the two vertical support members, and a fixing bolt inserted between the vertical support member and the vertical plug-in plate, the two vertical support members are symmetrically arranged on the side of the U-shaped formwork away from the opening, and a gap for inserting the vertical plug-in plate is provided between the two vertical support members, and the fixing bolt is horizontally inserted between the two vertical support members and the vertical plug-in plate; The second plug wedge is vertically arranged at one end of the vertical connecting plate away from the first fixing component. The vertical connecting plate is provided with a long strip through hole for the second plug wedge to pass through. The side surface of the second plug wedge abuts against the side surface of the horizontal support member.

[0010] The above-mentioned double-gate slot gate shaft concrete formwork is characterized in that: the upper connection assembly includes a plurality of upper connection screws evenly arranged along the circumferential direction of the upper support frame, and both ends of the upper connection screws are provided with mounting seats; The middle layer connection assembly comprises a plurality of connection supports evenly arranged along the circumferential direction of the middle support frame and a connection plug rod matched with the connection supports; The lower connection assembly includes a plurality of lower connection screws evenly arranged along the circumferential direction of the lower support frame, a connecting steel pipe arranged between the lower support frame and the template structure, and a connecting rib obliquely arranged between the lower support frame and the support column; both ends of the lower connection screw are provided with mounting seats.

[0011] The above-mentioned double-gate slot gate shaft concrete formwork is characterized in that: a plurality of the hanging support frames are evenly arranged along the circumferential direction of the lower support frame, the hanging support frame includes two symmetrically arranged support plates, and the two support plates are connected by a plurality of connecting steel plates; a support seat is horizontally arranged on the top of the two support plates, and a connecting bolt is vertically penetrated on the support seat, the top of the connecting bolt is connected to the lower support frame, and the bottom of the connecting bolt passes through a connecting steel plate and extends between the two support plates; the support plate is a right-angled triangle structure, one right-angled side of the support plate abuts on the formwork structure, and the other right-angled side of the support plate is flush with the lower support frame; a transition steel pipe is horizontally arranged on the side of the support plate, and the transition steel pipe is arranged on the side where the support plate abuts against the formwork structure; the positioning bolt is hung on the right-angled side of the support plate abutting against the formwork structure.

[0012] The above-mentioned double-gate slot gate shaft concrete formwork is characterized in that the straight side formwork, curved side formwork, connecting panel, U-shaped formwork, and L-shaped side formwork are all composed of a panel and a supporting rib plate arranged on the inner side of the panel.

[0013] The present invention also provides a method for constructing a double-gate slot gate shaft using a double-gate slot gate shaft concrete template, characterized in that the method comprises the following steps: Step 1: Assembly and hoisting of concrete formwork. The process is as follows: Step 101, assembling the concrete formwork on the ground, and installing a plurality of buffer ropes on the top of the upper support frame, one end of each of the buffer ropes is fixedly connected to the crossbeam on the top of the upper support frame, and the other end of each of the buffer ropes is connected to the lifting hook of the gantry crane; Step 102: Start the gantry crane, hoist the concrete template into the shaft, and lower it along the height direction of the shaft until the concrete template is lowered to the bottom of the shaft, so that a casting area is formed between the concrete template and the edge of the shaft, and after the concrete template is stable, remove the lifting hook of the gantry crane; wherein, the shaft is divided into a plurality of shaft casting sections connected in sequence from bottom to top along the height direction of the shaft, and the plurality of shaft casting sections are connected end to end in sequence, and the concrete template casts the plurality of shaft casting sections in sequence in sequence; Step 2, concrete pouring: prepare cement slurry according to the mass ratio of water and cement required by the design, put the prepared cement slurry into a cement mixing tank, and extend the grouting pipe into the pouring area; start the cement mixing tank to pour concrete into the pouring area; when pouring to the top of the pouring area, pre-embed a pre-embedded positioning cone on one side of the top of the pouring area close to the concrete formwork; Step 3: Remove the concrete formwork. The process is as follows: Step 301: After the concrete solidifies, a shaft concrete section is formed in the casting area, and then the first plug wedge and the second plug wedge are removed, and the fixing bolts are loosened in the opposite direction, and the vertical connecting plate is pulled, and the U-shaped template is contracted toward the direction close to the horizontal support member, so that the outer side surface of the U-shaped template and the shaft concrete section are separated; at the same time, the first door slot connecting screw and the second door slot connecting screw are adjusted, and the L-shaped side template is contracted inwardly, so that the outer side surface of the L-shaped side template and the shaft concrete section are separated; Step 302, then adjusting the upper connecting screw and the lower connecting screw to shrink the straight side formwork, the curved side formwork, and the connecting panel toward the supporting structure, so that the outer side surfaces of the straight side formwork, the curved side formwork, and the connecting panel are separated from the shaft concrete section; Step 303, connecting the ends of the multiple buffer ropes on the top of the upper support frame to the lifting hooks of the gantry crane, starting the gantry crane, lifting the concrete template upward along the height direction of the shaft until the positioning bolts at the bottom of the concrete template are aligned with the embedded positioning cone embedded in the top of the previous concrete section of the shaft, and closing the gantry crane; Step 4: Fix the position of the concrete formwork: tighten the corresponding positioning bolts and the embedded positioning cones, and hang the suspension support frame on the installed positioning assembly; then slowly lower the gantry crane, and remove the lifting hook of the gantry crane after the concrete formwork is stable; Step 5: Construction of the next vertical shaft section: Repeat steps 2 to 4 until the construction of all vertical shaft casting sections is completed.

[0014] Compared with the prior art, the present invention has the following advantages: 1. The present invention combines the support structure and the template structure to provide support and guarantee for pouring in the shaft; the positioning assembly at the bottom of the template structure is used to realize the positioning and fixation of the concrete template during the process of pouring the shaft section by section, and the overall structure of the concrete template can be reused, saving construction costs.

[0015] 2. The present invention realizes segmented pouring of the vertical shaft through concrete formwork, and utilizes a gantry crane to lift the concrete formwork segment by segment, thereby ensuring construction safety; at the same time, the positioning assembly at the bottom of the concrete formwork is combined to realize positioning and fixation of the overall structure, thereby ensuring construction quality; in addition, the overall contraction of the formwork structure facilitates the removal of the concrete formwork, thereby effectively saving construction time and improving construction efficiency.

[0016] In summary, the present invention combines the support structure and the formwork structure to provide support and guarantee for pouring in the shaft; utilizes the positioning assembly at the bottom of the formwork structure to realize the positioning and fixation of the concrete formwork in the process of pouring the shaft section by section, and the overall structure of the concrete formwork can be reused, saving construction costs; the concrete formwork is used to realize the segmented pouring of the shaft, and the gantry crane is used to realize the segmented lifting of the concrete formwork, ensuring construction safety; at the same time, the positioning assembly at the bottom of the concrete formwork is used to realize the positioning and fixation of the overall structure, ensuring the construction quality; in addition, the overall contraction of the formwork structure facilitates the removal of the concrete formwork, effectively saving the construction period and improving the construction efficiency.

[0017] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 for Figure 1 AA section view.

[0020] Figure 3 for Figure 1 BB cross-sectional view.

[0021] Figure 4 for Figure 1 Enlarged view of point C.

[0022] Figure 5 for Figure 4 EE cross-sectional view.

[0023] Figure 6 for Figure 4FF cross-sectional view.

[0024] Figure 7 for Figure 6 Enlarged view of point D.

[0025] Figure 8 for Figure 2 Enlarged view of point G.

[0026] Fig. 9 This is a diagram showing the use state of the present invention when pouring concrete.

[0027] Fig.10 This is a diagram showing the usage status of the first door slot template unit and the second door slot template unit when the template structure of the present invention is disassembled.

[0028] Fig.11 The figure is a flowchart of the method of the present invention.

[0029] Description of reference numerals: 1—straight side formwork; 2—curved side formwork; 3—connecting panel; 4—L-shaped side template; 5—door slot connecting plate; 6—second door slot connecting screw; 7—upper support frame; 8—middle support frame; 9—lower support frame; 10—support column; 11—connecting rib; 12—upper connecting screw; 13—connecting support; 14—connecting plug rod; 15—lower connecting screw; 16—support plate; 17—connecting steel plate; 18—U-shaped template; 19—horizontal support member; 20—positioning plate; 21—fixing rod; 22—fixed plate; 23—horizontal plug-in plate; 24—first plug-in wedge; 25—vertical connecting plate; 26—vertical supporting member; 27—vertical plug-in plate; 28—second plug-in wedge; 29—horizontal connecting plate; 30—first door slot connecting screw; 31—support seat; 32—connecting bolt; 33—transition steel pipe; 34—embedded positioning cone; 35—connecting steel pipe; 36—fixing bolt; 37—Location bolt; 38—Reinforcement rib; 39—Shaft concrete section. DETAILED DESCRIPTION

[0030] like Figures 1 to 8A double-gate slot gate shaft concrete template shown includes a template structure and a support structure both arranged in the shaft, the template structure is arranged along the circumferential direction of the shaft, the support structure is arranged in the template structure, and the support structure and the template structure are connected by a connecting structure; a plurality of positioning components are arranged at the bottom of the outer side surface of the template structure; The template structure includes two symmetrically arranged door slot template assemblies, and a straight side template 1 and a curved side template 2 arranged between the two door slot template assemblies. The two door slot template assemblies, the straight side template 1 and the curved side template 2 are integrally formed, and the two door slot template assemblies, the straight side template 1 and the curved side template 2 form a closed template structure. The door slot template assembly includes a first door slot template unit and a second door slot template unit, the first door slot template unit and the second door slot template unit have the same structural dimensions, the first door slot template unit and the second door slot template unit are connected via a connecting panel 3, the first door slot template unit and the connecting panel 3, as well as the second door slot template unit and the connecting panel 3 are fixedly connected; the straight side template 1 is connected between the two first door slot template units, and the straight side template 1 and the first door slot template unit are fixedly connected; the curved side template 2 is connected between the two second door slot template units, and the curved side template 2 and the second door slot template unit are fixedly connected; The first door slot template unit and the second door slot template unit each include two L-shaped side templates 4 and a door slot template arranged between the two L-shaped side templates 4, the L-shaped side template 4 and the door slot template are connected by a plurality of first door slot connecting components; the two L-shaped side templates 4 and the door slot template form a door-shaped door slot template structure, and the opening of the door slot template structure faces the supporting structure; a plurality of second door slot connecting components are connected between the two L-shaped side templates 4; The door slot template includes a U-shaped template 18 vertically arranged between the two L-shaped side templates 4 and a door slot template support adjustment component arranged in the opening of the U-shaped template 18; the opening of the U-shaped template 18 faces the supporting structure, the two ends of the U-shaped template 18 are respectively connected to the two L-shaped side templates 4, and the U-shaped template 18 and the L-shaped side template 4 are fixedly connected; the door slot template support adjustment component includes a plurality of horizontally adjustable support members all horizontally arranged at the opening of the U-shaped template 18 and a plurality of vertically adjustable support members all horizontally arranged in the opening of the U-shaped template 18, and the horizontally adjustable support members and the vertically adjustable support members are perpendicular to each other; The support structure includes an upper support frame 7, a middle support frame 8 and a lower support frame 9 which are arranged horizontally from top to bottom, and the upper support frame 7, the middle support frame 8 and the lower support frame 9 are connected by a plurality of support columns 10, and the upper support frame 7, the middle support frame 8, the lower support frame 9 and the support columns 10 are integrally formed; The connection structure includes an upper connection assembly, a middle connection assembly, a lower connection assembly, and a plurality of suspension support frames arranged at the bottom of the lower support frame 9 in sequence from top to bottom; A plurality of positioning components are respectively arranged at the bottom of the outer side surfaces of the straight side formwork 1 and the curved side formwork 2 , and the positioning components include a pre-embedded positioning cone 34 in the pre-embedded concrete and a positioning bolt 37 matched with the pre-embedded positioning cone 34 .

[0031] The present invention combines the support structure and the template structure to provide support and guarantee for casting in the shaft; the positioning components at the bottom of the template structure are used to realize the positioning and fixation of the concrete template during the process of casting the shaft section by section, and the overall structure constituting the concrete template can be reused, saving construction costs.

[0032] It should be noted that during the construction process, the upper support frame 7 and the lower support frame 9 can be used as a construction platform, and the upper support frame 7 and the lower support frame 9 are fully paved with horseway boards, and the horseway boards are fixed to the upper support frame 7 and the lower support frame 9 with iron wires. The set up construction platform can be used to adjust the panel, that is, adjust the upper connecting screw 12 and the lower connecting screw 15, and can also be used as a working platform during steel bar installation and concrete pouring, while preventing scattered materials from falling below.

[0033] like Figure 1 and Figure 4 As shown, in this embodiment, multiple first door groove connecting components are evenly arranged along the height direction of the door groove template, and the first door groove connecting components include a horizontal connecting plate 29 horizontally arranged on the L-shaped side template 4 and arranged in the door groove template structure, and a first door groove connecting screw 30 arranged between the two horizontal connecting plates 29, the horizontal connecting plate 29 is arranged at one end of the L-shaped side template 4 close to the door groove template, and the horizontal connecting plate 29 and the L-shaped side template 4 are integrally formed.

[0034] like Figure 1 As shown, in this embodiment, a plurality of the second door groove connecting components are evenly arranged along the height direction of the door groove template, and the second door groove connecting component includes a door groove connecting plate 5 horizontally arranged between two L-shaped side templates 4, and a second door groove connecting screw 6 connected between the L-shaped side templates 4 and the door groove connecting plate 5, and the door groove connecting plate 5 and the second door groove connecting screw 6 are perpendicular to each other.

[0035] like Figure 1 As shown, both ends of the door slot connecting plate 5 are connected by a second fixing component and an L-shaped side template 4, the second fixing component includes two positioning plates 20 vertically arranged on both sides of the door slot connecting plate 5 and a fixing member arranged on the door slot connecting plate 5 and connected to the positioning plates 20, the positioning plate 20 and the fixing member are integrally formed; the fixing member includes a fixing rod 21 transversely passed through the door slot connecting plate 5, and two fixing plates 22 connected between the positioning plate 20 and the door slot connecting plate 5, the two fixing plates 22 are symmetrically arranged on both sides of the door slot connecting plate 5; the positioning plates 20 in each second fixing component are sequentially connected end to end and integrally formed.

[0036] like Figure 4 and Figure 5 As shown, in this embodiment, a plurality of the horizontally adjustable support members are evenly arranged along the height direction of the U-shaped template 18, and the horizontally adjustable support members include two horizontal support members 19 both horizontally arranged on one side of the U-shaped template 18, a horizontal plug-in plate 23 horizontally arranged on the other side of the U-shaped template 18, and a first plug-in wedge 24 vertically penetrated through the horizontal support members 19 and the horizontal plug-in plate 23. The two horizontal support members 19 are symmetrically arranged on one side of the opening of the U-shaped template 18, and a gap for the horizontal plug-in plate 23 to be inserted is provided between the two horizontal support members 19. The horizontal support members 19 and the horizontal plug-in plate 23 are both provided with long strip-shaped through holes for the first plug-in wedge 24 to pass through.

[0037] like Figure 4 , Figure 6 and Figure 7 As shown, in this embodiment, a plurality of the vertically adjustable support members are evenly arranged along the height direction of the U-shaped template 18, and the vertically adjustable support members include a vertical connecting plate 25 horizontally arranged in the opening of the U-shaped template 18, one end of the vertical connecting plate 25 is connected to the U-shaped template 18 through a first fixing component, and the other end of the vertical connecting plate 25 is provided with a second plug-in wedge 28.

[0038] like Figure 4 , Figure 6 and Figure 7 As shown, in this embodiment, the first fixing assembly includes two vertically arranged vertical support members 26, a vertical plug-in plate 27 inserted between the two vertical support members 26, and a fixing bolt 36 inserted between the vertical support members 26 and the vertical plug-in plate 27. The two vertical support members 26 are symmetrically arranged on one side of the U-shaped template 18 away from the opening, and a gap for inserting the vertical plug-in plate 27 is provided between the two vertical support members 26. The fixing bolt 36 is horizontally inserted between the two vertical support members 26 and the vertical plug-in plate 27. The second plug wedge 28 is vertically arranged at one end of the vertical connecting plate 25 away from the first fixing assembly. The vertical connecting plate 25 is provided with a long strip through hole for the second plug wedge 28 to pass through. The side surface of the second plug wedge 28 abuts against the side surface of the horizontal support member 19.

[0039] like Figure 6 As shown, the vertical support members 26 in each first fixing assembly are connected end to end and formed integrally. The straight section of the U-shaped template 18 is divided into two left and right parts by the vertical support members 26. In order to facilitate the bending of the straight section of the U-shaped template 18 in the subsequent demoulding process, the left and right parts of the straight section of the U-shaped template 18 can be connected by two panels.

[0040] like Figure 2 and Figure 3 As shown, in this embodiment, the upper connection assembly includes a plurality of upper connection screws 12 evenly arranged along the circumferential direction of the upper support frame 7, and mounting seats are provided at both ends of the upper connection screws 12; The middle layer connection assembly includes a plurality of connection supports 13 evenly arranged along the circumferential direction of the middle support frame 8 and a connection plug rod 14 matched with the connection supports 13; The lower connection assembly includes a plurality of lower connection screws 15 evenly arranged along the circumferential direction of the lower support frame 9, a connecting steel pipe 35 arranged between the lower support frame 9 and the template structure, and a connecting rib 11 obliquely arranged between the lower support frame 9 and the support column 10; both ends of the lower connection screw 15 are provided with mounting seats.

[0041] like Figure 2 and Figure 3 As shown, one end of the upper connecting screw 12 is connected to the upper support frame 7, and the other end of the upper connecting screw 12 is connected to the template structure; a plurality of reinforcing ribs 38 are obliquely arranged between the upper support frame 7 and the middle support frame 8, and between the middle support frame 8 and the lower support frame 9.

[0042] like Figure 8As shown, in this embodiment, a plurality of the suspension support frames are evenly arranged along the circumferential direction of the lower support frame 9, and the suspension support frames include two symmetrically arranged support plates 16, and the two support plates 16 are connected by a plurality of connecting steel plates 17; a support seat 31 is horizontally arranged on the top of the two support plates 16, and a connecting bolt 32 is vertically penetrated on the support seat 31, and the top of the connecting bolt 32 is connected to the lower support frame 9, and the bottom of the connecting bolt 32 passes through a connecting steel plate 17 and extends between the two support plates 16; the support plate 16 is a right-angled triangle structure, and one right-angled side of the support plate 16 abuts on the template structure, and the other right-angled side of the support plate 16 is flush with the lower support frame 9; a transition steel pipe 33 is horizontally arranged on the side of the support plate 16, and the transition steel pipe 33 is arranged on the side where the support plate 16 abuts against the template structure; the positioning bolt 37 is hung on the right-angled side of the support plate 16 abutting against the template structure.

[0043] In this embodiment, the straight side formwork 1, the curved side formwork 2, the connecting panel 3, the U-shaped formwork 18, and the L-shaped side formwork 4 are all composed of panels and supporting ribs arranged on the inner side of the panels.

[0044] In actual use, the panels of the straight side formwork 1, the curved side formwork 2, the connecting panel 3, the U-shaped formwork 18, and the L-shaped side formwork 4 can be replaced by the existing flip formwork, and then support ribs are added inside the existing flip formwork. Figure 1 As shown, the arc-shaped side template 2 is composed of an arc-shaped template and straight connecting plates arranged on both sides of the arc-shaped template, and the arc-shaped template and the straight connecting plates are integrally formed; one end of the straight connecting plate is connected to the arc-shaped template, and the other end of the straight connecting plate is connected to the L-shaped side template 4. It should be noted that two vertical support members 26 are both arranged on the inner side of the U-shaped template 18, and the two vertical support members 26 divide the U-shaped template 18 into two parts, which is convenient for subsequent demoulding.

[0045] like Figures 1 to 11 A method for constructing a double-gate slot gate shaft using a double-gate slot gate shaft concrete template is shown, and the method comprises the following steps: Step 1: Assembly and hoisting of concrete formwork. The process is as follows: Step 101, assemble the concrete formwork on the ground, and install multiple buffer ropes on the top of the upper support frame 7, one end of the multiple buffer ropes 12-1 is fixedly connected to the crossbeam on the top of the upper support frame 7, and the other end of the multiple buffer ropes 12-1 is connected to the lifting hook of the gantry crane; Step 102: Start the gantry crane, hoist the concrete template into the shaft, and lower it along the height direction of the shaft until the concrete template is lowered to the bottom of the shaft, so that a casting area is formed between the concrete template and the edge of the shaft, and after the concrete template is stable, remove the lifting hook of the gantry crane; wherein, the shaft is divided into a plurality of shaft casting sections connected in sequence from bottom to top along the height direction of the shaft, and the plurality of shaft casting sections are connected end to end in sequence, and the concrete template casts the plurality of shaft casting sections in sequence in sequence; Step 2, concrete pouring: prepare cement slurry according to the mass ratio of water and cement required by the design, put the prepared cement slurry into a cement mixing tank, and extend the grouting pipe into the pouring area; start the cement mixing tank to pour concrete into the pouring area; when pouring to the top of the pouring area, pre-embed the pre-embedded positioning cone 34 on one side of the top of the pouring area close to the concrete formwork; Step 3: Remove the concrete formwork. The process is as follows: Step 301: After the concrete solidifies, a shaft concrete section 39 is formed in the casting area. Then, the first plug wedge 24 and the second plug wedge 28 are removed, and the fixing bolt 36 is loosened in the opposite direction. The vertical connecting plate 25 is pulled, and the U-shaped template 18 is contracted toward the direction close to the horizontal support member 19, so that the outer side surface of the U-shaped template 18 is separated from the shaft concrete section 39. At the same time, the first door slot connecting screw 30 and the second door slot connecting screw 6 are adjusted, and the L-shaped side template 4 is contracted inwardly, so that the outer side surface of the L-shaped side template 4 is separated from the shaft concrete section 39. Step 302, then adjust the upper connecting screw 12 and the lower connecting screw 15 to shrink the straight side formwork 1, the curved side formwork 2, and the connecting panel 3 toward the supporting structure, so that the outer side surfaces of the straight side formwork 1, the curved side formwork 2, and the connecting panel 3 are separated from the shaft concrete section 39; Step 303, the ends of the multiple buffer ropes 12-1 on the top of the upper support frame 7 are connected to the lifting hooks of the gantry crane, the gantry crane is started, and the concrete template is lifted upward along the height direction of the shaft until the positioning bolts 37 at the bottom of the concrete template are aligned with the embedded positioning cone 34 embedded in the top of the previous shaft concrete section 39, and the gantry crane is closed; Step 4: Fix the position of the concrete formwork: tighten the corresponding positioning bolts 37 and the embedded positioning cone 34, and hang the suspension support frame on the installed positioning assembly; then slowly lower the gantry crane, and remove the lifting hook of the gantry crane after the concrete formwork is stable; Step 5: Construction of the next vertical shaft section: Repeat steps 2 to 4 until the construction of all vertical shaft casting sections is completed.

[0046] The present invention realizes segmented pouring of the vertical shaft through the concrete formwork, and utilizes the gantry crane to lift the concrete formwork segment by segment, thereby ensuring construction safety; at the same time, the positioning assembly at the bottom of the concrete formwork is combined to realize positioning and fixing of the overall structure, thereby ensuring construction quality; in addition, the overall contraction of the formwork structure facilitates the removal of the concrete formwork, effectively saving construction time and improving construction efficiency.

[0047] In step 5, when the template of the subsequent shaft casting section is removed, the positioning assembly at the bottom needs to be removed. The embedded positioning cone 34 is left in the cast shaft casting section, and the positioning bolt 37 is reused when casting the next shaft casting section.

[0048] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A double-gate slot gate shaft concrete formwork, characterized in that: A template structure and a support structure are both arranged in the shaft, the template structure is arranged along the circumferential direction of the shaft, the support structure is arranged in the template structure, and the support structure and the template structure are connected by a connecting structure; a plurality of positioning components are arranged at the bottom of the outer side surface of the template structure; The template structure comprises two symmetrically arranged door slot template assemblies, and a straight side template (1) and a curved side template (2) arranged between the two door slot template assemblies; the two door slot template assemblies, the straight side template (1) and the curved side template (2) are integrally formed; the two door slot template assemblies, the straight side template (1) and the curved side template (2) form a closed template structure; The door slot template assembly comprises a first door slot template unit and a second door slot template unit, the first door slot template unit and the second door slot template unit have the same structural dimensions, the first door slot template unit and the second door slot template unit are connected via a connecting panel (3), the first door slot template unit and the connecting panel (3), as well as the second door slot template unit and the connecting panel (3) are fixedly connected; a straight side template (1) is connected between the two first door slot template units, and the straight side template (1) and the first door slot template unit are fixedly connected; an arcuate side template (2) is connected between the two second door slot template units, and the arcuate side template (2) and the second door slot template unit are fixedly connected; The first door groove template unit and the second door groove template unit each comprise two L-shaped side templates (4) and a door groove template arranged between the two L-shaped side templates (4), the L-shaped side templates (4) and the door groove template being connected via a plurality of first door groove connecting components; the two L-shaped side templates (4) and the door groove template form a door-shaped door groove template structure, and the opening of the door groove template structure faces the supporting structure; a plurality of second door groove connecting components are connected between the two L-shaped side templates (4); The door slot template comprises a U-shaped template (18) vertically arranged between the two L-shaped side templates (4) and a door slot template support adjustment component arranged in the opening of the U-shaped template (18); the opening of the U-shaped template (18) faces the supporting structure, the two ends of the U-shaped template (18) are respectively connected to the two L-shaped side templates (4), and the U-shaped template (18) and the L-shaped side template (4) are fixedly connected; the door slot template support adjustment component comprises a plurality of horizontally adjustable support members all horizontally arranged at the opening of the U-shaped template (18) and a plurality of vertically adjustable support members all horizontally arranged in the opening of the U-shaped template (18), and the horizontally adjustable support members and the vertically adjustable support members are perpendicular to each other; The support structure comprises an upper support frame (7), a middle support frame (8) and a lower support frame (9) which are arranged horizontally in sequence from top to bottom, the upper support frame (7), the middle support frame (8) and the lower support frame (9) being connected via a plurality of support columns (10), and the upper support frame (7), the middle support frame (8), the lower support frame (9) and the support columns (10) being integrally formed; The connection structure comprises an upper connection component, a middle connection component, a lower connection component, and a plurality of suspension support frames arranged at the bottom of the lower support frame (9) in sequence from top to bottom; A plurality of groups of positioning components are respectively arranged at the bottom of the outer side surfaces of the straight side formwork (1) and the curved side formwork (2), and the positioning components include a pre-embedded positioning cone (34) in the pre-embedded concrete and a positioning bolt (37) cooperating with the pre-embedded positioning cone (34).

2. A double-gate slot gate shaft concrete formwork according to claim 1, characterized in that: A plurality of the first door groove connection components are evenly arranged along the height direction of the door groove template, and the first door groove connection components include a horizontal connection plate (29) horizontally arranged on the L-shaped side template (4) and arranged in the door groove template structure, and a first door groove connection screw (30) arranged between two of the horizontal connection plates (29), the horizontal connection plate (29) being arranged at one end of the L-shaped side template (4) close to the door groove template, and the horizontal connection plate (29) and the L-shaped side template (4) being integrally formed.

3. A double-gate slot gate shaft concrete formwork and construction method thereof according to claim 2, characterized in that: A plurality of the second door slot connection components are evenly arranged along the height direction of the door slot template, and the second door slot connection components include a door slot connection plate (5) horizontally arranged between two L-shaped side templates (4), and a second door slot connection screw (6) connected between the L-shaped side template (4) and the door slot connection plate (5), wherein the door slot connection plate (5) and the second door slot connection screw (6) are perpendicular to each other.

4. A double-gate slot gate shaft concrete formwork according to claim 2, characterized in that: The plurality of horizontally adjustable support members are evenly arranged along the height direction of the U-shaped template (18), and the horizontally adjustable support members include two horizontal support members (19) both horizontally arranged on one side of the U-shaped template (18), a horizontal plug-in plate (23) horizontally arranged on the other side of the U-shaped template (18), and a first plug-in wedge (24) vertically penetrated through the horizontal support members (19) and the horizontal plug-in plate (23). The two horizontal support members (19) are symmetrically arranged on one side of the opening of the U-shaped template (18), a gap for inserting the horizontal plug-in plate (23) is provided between the two horizontal support members (19), and the horizontal support members (19) and the horizontal plug-in plate (23) are both provided with a long strip through hole for the first plug-in wedge (24) to pass through.

5. A double-gate slot gate shaft concrete formwork according to claim 4, characterized in that: A plurality of the vertically adjustable support members are evenly arranged along the height direction of the U-shaped template (18), and the vertically adjustable support members include a vertical connecting plate (25) horizontally arranged in an opening of the U-shaped template (18), one end of the vertical connecting plate (25) is connected to the U-shaped template (18) via a first fixing component, and the other end of the vertical connecting plate (25) is provided with a second plug-in wedge (28).

6. A double-gate slot gate shaft concrete formwork according to claim 5, characterized in that: The first fixing assembly comprises two vertically arranged vertical support members (26), a vertical plug-in plate (27) inserted between the two vertical support members (26), and a fixing bolt (36) inserted between the vertical support members (26) and the vertical plug-in plate (27); the two vertical support members (26) are symmetrically arranged on a side of the U-shaped template (18) away from the opening, and a gap is provided between the two vertical support members (26) for inserting the vertical plug-in plate (27); and the fixing bolt (36) is horizontally inserted between the two vertical support members (26) and the vertical plug-in plate (27); The second plug-in wedge (28) is vertically arranged at one end of the vertical connecting plate (25) away from the first fixing assembly. The vertical connecting plate (25) is provided with a long strip through hole for the second plug-in wedge (28) to pass through. The side surface of the second plug-in wedge (28) abuts against the side surface of the horizontal support member (19).

7. A double-gate slot gate shaft concrete formwork according to claim 6, characterized in that: The upper connection assembly comprises a plurality of upper connection screws (12) uniformly arranged along the circumferential direction of the upper support frame (7), and mounting seats are provided at both ends of the upper connection screws (12); The middle layer connection assembly comprises a plurality of connection supports (13) evenly arranged along the circumferential direction of the middle support frame (8) and a connection plug rod (14) cooperating with the connection supports (13); The lower connection assembly comprises a plurality of lower connection screws (15) uniformly arranged along the circumferential direction of the lower support frame (9), a connection steel pipe (35) arranged between the lower support frame (9) and the template structure, and a connection rib (11) obliquely arranged between the lower support frame (9) and the support column (10); both ends of the lower connection screw (15) are provided with mounting seats.

8. A double-gate slot gate shaft concrete formwork according to claim 7, characterized in that: The plurality of suspension support frames are evenly arranged along the circumferential direction of the lower support frame (9), and the suspension support frames include two symmetrically arranged support plates (16), and the two support plates (16) are connected by a plurality of connecting steel plates (17); a support seat (31) is horizontally arranged on the top of the two support plates (16), and a connecting bolt (32) is vertically penetrated through the support seat (31), the top of the connecting bolt (32) is connected to the lower support frame (9), and the bottom of the connecting bolt (32) passes through a connecting steel plate (17) and extends into the lower support frame (9). between the two support plates (16); the support plate (16) is a right-angled triangle structure, one right-angled side of the support plate (16) abuts against the template structure, and the other right-angled side of the support plate (16) is flush with the lower support frame (9); a transition steel pipe (33) is horizontally arranged on the side of the support plate (16), and the transition steel pipe (33) is arranged on the side where the support plate (16) abuts against the template structure; the positioning bolt (37) is hung on the right-angled side of the support plate (16) abutting against the template structure.

9. A double-gate slot gate shaft concrete formwork according to claim 1, characterized in that: The straight side formwork (1), the curved side formwork (2), the connecting panel (3), the U-shaped formwork (18), and the L-shaped side formwork (4) are all composed of a panel and supporting ribs arranged on the inner side of the panel.

10. The method for constructing a double-slot gate shaft using a double-slot gate shaft concrete template according to claim 8, characterized in that: The method comprises the following steps: Step 1: Assembly and hoisting of concrete formwork. The process is as follows: Step 101, assembling the concrete formwork on the ground, and installing a plurality of buffer ropes on the top of the upper support frame (7), one end of the plurality of buffer ropes (12-1) being fixedly connected to the crossbeam on the top of the upper support frame (7), and the other end of the plurality of buffer ropes (12-1) being connected to the lifting hook of the gantry crane; Step 102: Start the gantry crane, hoist the concrete template into the shaft, and lower it along the height direction of the shaft until the concrete template is lowered to the bottom of the shaft, so that a casting area is formed between the concrete template and the edge of the shaft, and after the concrete template is stable, remove the lifting hook of the gantry crane; wherein, the shaft is divided into a plurality of shaft casting sections connected in sequence from bottom to top along the height direction of the shaft, and the plurality of shaft casting sections are connected end to end in sequence, and the concrete template casts the plurality of shaft casting sections in sequence in sequence; Step 2, concrete pouring: prepare cement slurry according to the mass ratio of water and cement required by the design, place the prepared cement slurry in a cement mixing tank, and extend the grouting pipe into the pouring area; start the cement mixing tank to pour concrete into the pouring area; when pouring to the top of the pouring area, pre-embed a pre-embedded positioning cone (34) on one side of the top of the pouring area close to the concrete formwork; Step 3: Remove the concrete formwork. The process is as follows: Step 301: After the concrete solidifies, a shaft concrete section (39) is formed in the casting area. Then, the first plug wedge (24) and the second plug wedge (28) are removed, and the fixing bolts (36) are loosened in the opposite direction. The vertical connecting plate (25) is pulled, and the U-shaped template (18) is retracted in a direction close to the horizontal support member (19), so that the outer side surface of the U-shaped template (18) and the shaft concrete section (39) are separated. At the same time, the first door slot connecting screw (30) and the second door slot connecting screw (6) are adjusted, and the L-shaped side template (4) is retracted inwardly, so that the outer side surface of the L-shaped side template (4) and the shaft concrete section (39) are separated. Step 302, then adjusting the upper connecting screw (12) and the lower connecting screw (15) to shrink the straight side formwork (1), the curved side formwork (2), and the connecting panel (3) in a direction close to the supporting structure, so that the outer side surfaces of the straight side formwork (1), the curved side formwork (2), and the connecting panel (3) are separated from the shaft concrete section (39); Step 303, connecting the ends of the plurality of buffer ropes (12-1) at the top of the upper support frame (7) to the lifting hooks of the gantry crane, starting the gantry crane, lifting the concrete template upward along the height direction of the shaft until the positioning bolts (37) at the bottom of the concrete template and the embedded positioning cone (34) embedded in the top of the previous shaft concrete section (39) are aligned, and closing the gantry crane; Step 4, fix the position of the concrete formwork: tighten the corresponding positioning bolts (37) and the embedded positioning cone (34), and hang the suspension support frame on the installed positioning assembly; then slowly lower the gantry crane hook, and after the concrete formwork is stable, remove the lifting hook of the gantry crane; Step 5: Construction of the next vertical shaft section: Repeat steps 2 to 4 until the construction of all vertical shaft casting sections is completed.

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