CN113738100B

CN113738100B - Early-support later-fixing early-dismantling formwork system and construction method thereof

Info

Publication number: CN113738100B
Application number: CN202111180504.2A
Authority: CN
Inventors: 毛盛泰; 程秀品; 刘郁冬; 杨萍
Original assignee: China Railway 25th Bureau Group Co Ltd; Fourth Engineering Co Ltd of China Railway 25th Bureau Group Co Ltd
Current assignee: China Railway 25th Bureau Group Co Ltd; Fourth Engineering Co Ltd of China Railway 25th Bureau Group Co Ltd
Priority date: 2021-10-11
Filing date: 2021-10-11
Publication date: 2022-11-04
Anticipated expiration: 2041-10-11
Also published as: CN113738100A

Abstract

The invention discloses a formwork system for early dismantling after being supported and shaped and a construction method thereof, belonging to the technical field of building engineering and comprising a formwork supporting mechanism and a floor formwork, wherein the formwork supporting mechanism consists of a supporting component and an early dismantling component, the early dismantling component is fixedly arranged on the outer wall at the top of the supporting component, and the floor formwork is erected on a plurality of groups of formwork supporting mechanisms; the invention can completely solve the problem that a supporting system is unstable due to knocking, can randomly adjust the height of the threaded column, can be used for floors with different heights, has strong adaptability, adopts an integral structure adopting a first support and later assembly method, can greatly improve the installation efficiency of the floor slab template, can carry out shaping mass production on the floor slab template, reduces the production difficulty and the production cost, and can avoid the problem of potential safety hazard caused by falling of the floor slab template in early disassembly.

Description

Early-support later-fixing early-dismantling formwork system and construction method thereof

Technical Field

The invention belongs to the technical field of constructional engineering, and particularly relates to a formwork system for early support and later shaping and early dismantling and a construction method thereof.

Background

The early-dismantling formwork system is characterized in that a formwork is reasonably erected, the span of a large-span floor is reduced by increasing supporting points, so that the purposes of early dismantling the formwork and later dismantling a strut are achieved, the early dismantling formwork consists of a formwork and a supporting system, an early dismantling device is arranged in the floor formwork supporting system, and when the floor concrete reaches early dismantling strength, a lifting bracket of the early dismantling device is lowered to dismantle the floor formwork; and the support system is dismantled twice, part of the supports are dismantled for the first time to form a floor support layout with the distance not more than 2m, and the second dismantling is carried out when the reserved supports meet the formwork dismantling condition of the concrete member.

At present, in the existing early-dismantling formwork system, an early-dismantling column head is generally positioned at the top of a supporting system, when workers perform early dismantling work, dismantling work can be completed only by means of tools, the operation is inconvenient, dismantling is labor-consuming, and certain disadvantages exist in use, while the chinese patent CN102787719B discloses a formwork early-dismantling mechanism and an early-dismantling formwork system.

Disclosure of Invention

The invention aims to provide a formwork system which is firstly supported and then molded and is early dismantled and a construction method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a formwork supporting mechanism and a floor formwork system are arranged in a shaping mode, wherein the formwork supporting mechanism is composed of a supporting assembly and an early-dismantling assembly, the early-dismantling assembly is fixedly arranged on the outer wall of the top of the supporting assembly, and the floor formwork is erected on a plurality of sets of formwork supporting mechanisms;

the early-dismantling assembly comprises a fixed seat fixedly connected to the outer wall of the threaded column, the fixed seat is rotatably connected with one end of a rotating handle, the outer wall of the rotating handle close to the fixed seat is hinged to the outer wall of a movable ring through a connecting piece, the movable ring is sleeved on the outer wall of the threaded column, the outer wall of the movable ring is hinged to the bottom surface of a clamping block through an articulating piece, the clamping block is slidably connected to the fixed block, the fixed block is fixedly connected to the outer wall of the threaded column, a movable groove and a clamping groove are formed in one side, close to the threaded column, of the clamping block, a U-shaped supporting arm is clamped in the clamping groove and penetrates through a through hole formed in the threaded column, cylindrical supporting blocks are fixedly connected to the two ends of the supporting arm, the supporting arm is fixedly connected to the outer wall inside the threaded column and is slidably connected to the sliding groove formed in the inner wall of the through hole, supporting grooves are formed in the two side walls of the floor slab formwork and matched with the supporting grooves, the supporting assembly comprises a base plate which is arranged on the ground, the bottom end of the inserting column is fixedly connected to the bottom end of the inserting column, the base plate is movably connected to the top end of the supporting column, and the base plate is fixedly connected to the top end of the limiting ring.

As a preferred embodiment, a square column is fixedly connected to the bottom end of the threaded column, and the square column is slidably connected to a square groove formed in the support column.

As a preferred embodiment, the periphery of the floor slab formwork is provided with a notch, the notch corresponds to the position of the jacking, and the surface of the jacking is flush with the surface of the floor slab formwork.

In a preferred embodiment, the floor slab formwork is fixedly provided with a grid plate inside, and the floor slab formwork and the grid plate are integrally formed.

A construction method of a formwork system which is firstly supported and then shaped and is early dismantled comprises the following steps:

early-dismantling template building work:

s1, locking the early-dismantling assembly, manually lifting the supporting arm, manually rotating the rotating handle downwards, enabling the movable ring to move downwards under the action of the connecting piece, enabling the clamping block to move towards the direction of the threaded column through the action of the hinge piece by the movable ring until the supporting arm is clamped in the clamping groove in the clamping block, loosening the rotating handle and completing the fixing of the supporting block;

s2, mounting a support assembly, placing the insertion column and the base plate on the bottom surface, aligning the insertion hole at the bottom end of the support column with the insertion column after placement, and inserting the support column to the outer side of the insertion column to enable the support column to stand up;

s3, adjusting the height of the jacking, rotating the rotating handle to enable the rotating sleeve to rotate, enabling the rotating sleeve to enable the threaded column to move through the action of the threads, and enabling the threaded column to move and adjust the height of the jacking until the height of the jacking is consistent with the height required by the floor slab;

s4, installing a floor slab template, and enabling a bracket at the bottom of the floor slab template to correspond to the position of the support block so that the floor slab template is sequentially erected on the support block;

s5, after the plurality of floor slab templates are completely erected, carrying out floor slab concrete pouring work;

early-dismantling formwork dismantling work:

s6, removing the floor slab template, manually rotating the rotating handle upwards and enabling the clamping block to be away from the threaded column after the floor slab concrete reaches early removal strength, enabling the supporting arm to move downwards along the through hole under the action of gravity after the supporting arm is separated from the clamping groove in the clamping block, enabling the floor slab template to be separated from the floor slab concrete and descend for a certain distance, manually removing the floor slab template, and keeping the template supporting mechanism;

and S7, removing the template supporting mechanism, rotating the rotating handle and enabling the threaded column to descend under the action of the rotating sleeve when the floor concrete meets the template removing requirement, and removing the template supporting mechanism after the jacking is separated from the floor concrete.

Compared with the prior art, the early-support and later-fixing early-dismantling formwork system and the construction method thereof provided by the invention at least have the following beneficial effects:

(1) After the floor slab concrete reaches early-dismantling strength, workers manually rotate the rotating handle upwards and drive the movable ring to move upwards through the action of the connecting piece, the movable ring drives the clamping block to be away from the threaded column through the action of the hinge piece, after the supporting arm is separated from the clamping groove in the clamping block, the supporting arm moves downwards along the through hole under the action of gravity, so that the floor slab template is separated from the floor slab concrete and descends for a certain distance, and then the floor slab template is manually taken down;

(2) The height of the threaded column can be adjusted at will through the arrangement of the rotating handle, the rotating sleeve and the limiting ring, so that the threaded column can be used for floors with different heights, the adaptability is strong, and the height of the threaded column can be reduced through rotating the rotating sleeve during dismantling, so that the aim of conveniently dismantling the template supporting mechanism is fulfilled;

(3) Because the tray is cylindrical, and the support groove is the arc that agrees with the tray, when the tray descends along with the support arm, one side downward sloping of floor template, one side of floor template still can be built on the tray this moment, can avoid early when tearing open floor template and drop the problem that causes the potential safety hazard.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the formwork support mechanism of the present invention;

FIG. 3 is a cross-sectional view of the support post and the rotating sleeve of the present invention;

FIG. 4 is a partially sectioned structural schematic view of the top end of the threaded post of the present invention;

FIG. 5 is a schematic structural diagram of a fixture block according to the present invention;

FIG. 6 is a schematic structural view of the bottom of the floor form of the present invention;

FIG. 7 is a cross-sectional view of the rotating sleeve of the present invention;

fig. 8 is a schematic structural view of the support column of the present invention.

In the figure: 1. a template support mechanism; 11. a support assembly; 1101. a base plate; 1102. inserting the post; 1103. a support column; 1104. an insertion hole; 1105. a threaded post; 1106. a square column; 1107. a square groove; 1108. rotating the sleeve; 1109. turning a handle; 1110. a limiting ring; 1111. a limiting groove; 1112. jacking; 12. early disassembling the component; 1201. a fixed seat; 1202. a handle is rotated; 1203. a connecting member; 1204. a movable ring; 1205. an articulation member; 1206. a clamping block; 1207. a fixed block; 1208. a movable groove; 1209. a card slot; 1210. a support arm; 1211. a through hole; 1212. a slider; 1213. a sliding groove; 1214. a support block; 2. a floor slab formwork; 201. supporting a groove; 202. and (7) a grid plate.

Detailed Description

The present invention will be further described with reference to the following examples.

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments may be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are all within the scope of the present invention as claimed.

Referring to fig. 1-8, the present invention provides a formwork system with early support, later installation, shaping and early removal, which comprises a formwork support mechanism 1 and a floor formwork 2, wherein the formwork support mechanism 1 is composed of a support component 11 and an early removal component 12, the early removal component 12 is fixedly arranged on the outer wall of the top of the support component 11, and the floor formwork 2 is erected on a plurality of sets of formwork support mechanisms 1;

the early-dismantling assembly 12 comprises a fixed seat 1201 fixedly connected to the outer wall of a threaded column 1105, the fixed seat 1201 is rotatably connected to one end of a rotating handle 1202, the outer wall of the rotating handle 1202 close to the fixed seat 1201 is hinged to the outer wall of a movable ring 1204 through a connecting piece 1203, the movable ring 1204 is sleeved on the outer wall of the threaded column 1105, the outer wall of the movable ring 1204 is further hinged to the bottom surface of a clamping block 1206 through a hinge 1205, the clamping block 1206 is slidably connected to a fixed block 1207, the fixed block 1207 is fixedly connected to the outer wall of the threaded column 1105, a movable groove 1208 and a clamping groove 1209 are formed in one side of the clamping block 1206 close to the threaded column 1105, a U-shaped supporting arm 1210 is clamped in the clamping groove 1209, the supporting arm 1210 penetrates through a through hole 1211 formed in the threaded column 1105, and cylindrical supporting blocks 1214 are fixedly connected to both ends of the supporting arm 1210; the rotating handle 1202 is manually rotated upwards, the clamping block 1206 is far away from the threaded column 1105, after the supporting arm 1210 is separated from the clamping groove 1209 on the clamping block 1206, under the action of gravity, the supporting arm 1210 moves downwards along the through hole 1211, the floor slab formwork 2 is separated from the floor slab concrete and descends for a certain distance, then the floor slab formwork 2 is manually taken down, other tools are not needed during early dismantling, the operation is convenient and simple, labor is saved, the abrasion of the column head of the early dismantling can be greatly reduced, the sliding block 1212 is fixedly connected to the outer wall of the supporting arm 1210 in the threaded column 1105, and the sliding block 1212 is slidably connected in the sliding groove 1213 formed in the inner wall of the through hole 1211; through the arrangement of the sliding block 1212 and the sliding groove 1213, the supporting arm 1210 is more stable when moving up and down, the bottom surfaces of the two side walls of the floor slab template 2 are both provided with the bracket 201, and the bracket 201 is matched with the supporting block 1214 for use; the supporting component 11 comprises a base plate 1101 erected on the ground, the base plate 1101 is fixedly connected to the bottom end of an insertion column 1102, the insertion column 1102 is inserted into an insertion hole 1104 at the bottom end of a supporting column 1103, a threaded column 1105 is movably connected to the supporting column 1103, a rotating sleeve 1108 is connected to the outer wall of the threaded column 1105 in a threaded manner, two rotating handles 1109 are fixedly arranged on the outer wall of the rotating sleeve 1108, a limiting ring 1110 is fixedly connected to the inner wall of the rotating sleeve 1108, the limiting ring 1110 is movably connected to a limiting groove 1111 formed in the outer wall of the top end of the supporting column 1103, and a top support 1112 is fixedly connected to the top end of the threaded column 1105; through changeing 1109, rotating the setting of cover 1108 and spacing ring 1110, can adjust the height of screw post 1105 wantonly to can use the floor of co-altitude, strong adaptability, and when demolising, also can fall screw post 1105 height through rotatory cover 1108 that rotates, thereby reach the purpose of being convenient for dismantle template supporting mechanism 1, and supporting component 11 can form the supporting role to floor template 2.

As further shown in fig. 3, a square column 1106 is fixedly connected to the bottom end of the threaded column 1105, and the square column 1106 is slidably connected to a square groove 1107 formed in the supporting column 1103; through the arrangement of the square column 1106 and the square groove 1107, the threaded column 1105 can be limited from rotating, and the threaded column 1105 is more stable and effective when moving up and down.

As further shown in fig. 1 and 4, the periphery of the floor slab formwork 2 is provided with a gap, the gap corresponds to the position of the top support 1112, and the surface of the top support 1112 is flush with the surface of the floor slab formwork 2; the floor slab template 2 and the jacking 1112 can be ensured to be matched for use, so that the subsequent pouring work can be smoothly carried out.

As further shown in fig. 4, a grid plate 202 is fixedly arranged inside the floor slab formwork 2, and the floor slab formwork 2 and the grid plate 202 are integrally formed; the strength of the floor slab formwork 2 is improved.

A construction method of a formwork system with early support, later setting and early dismantling comprises the following steps:

early-dismantling template building work:

s1, locking the early-dismantling assembly 12, manually lifting the supporting arm 1210, manually rotating the rotating handle 1202 downwards, enabling the movable ring 1204 to move downwards through the action of the connecting piece 1203, enabling the clamping block 1206 to move towards the threaded column 1105 through the action of the hinge piece 1205 of the movable ring 1204, until the supporting arm 1210 is clamped in the clamping groove 1209 on the clamping block 1206, loosening the rotating handle 1202, and fixing the support block 1214;

s2, installing the supporting component 11, placing the inserting column 1102 and the base plate 1101 on the bottom surface, aligning the inserting hole 1104 at the bottom end of the supporting column 1103 with the inserting column 1102 after placing, inserting the supporting column 1103 to the outer side of the inserting column 1102, and enabling the supporting column 1103 to stand;

s3, adjusting the height of the jacking 1112, rotating the rotating handle 1109 to enable the rotating sleeve 1108 to rotate, enabling the rotating sleeve 1108 to enable the threaded column 1105 to move through the thread effect, enabling the threaded column 1105 to move and adjusting the height of the jacking 1112 until the jacking 1112 is consistent with the required height of the floor slab;

s4, installing the floor slab template 2, and enabling the bracket 201 at the bottom of the floor slab template 2 to correspond to the support block 1214, so that the floor slab template 2 is sequentially erected on the support block 1214;

s5, after the plurality of floor slab templates 2 are completely erected, carrying out floor slab concrete pouring work;

early formwork dismantling work:

s6, removing the floor slab template 2, manually rotating the rotating handle 1202 upwards and enabling the clamping block 1206 to be away from the threaded column 1105 after the floor slab concrete reaches early removal strength, after the supporting arm 1210 is separated from the clamping groove 1209 on the clamping block 1206, moving the supporting arm 1210 downwards along the through hole 1211 under the action of gravity, enabling the floor slab template 2 to be separated from the floor slab concrete and descend for a certain distance, manually removing the floor slab template 2, and keeping the template supporting mechanism 1;

s7, removing the formwork supporting mechanism 1, when the floor concrete meets the formwork removing requirement, rotating the rotating handle 1109, enabling the threaded column 1105 to descend under the action of the rotating sleeve 1108, and removing the formwork supporting mechanism 1 after the jacking 1112 is separated from the floor concrete.

In conclusion, after the floor slab concrete reaches the early-dismantling strength, a worker manually rotates the rotating handle 1202 upwards and drives the movable ring 1204 to move upwards through the action of the connecting piece 1203, the movable ring 1204 drives the clamping block 1206 to be far away from the threaded column 1105 through the action of the hinge 1205, after the support arm 1210 is separated from the clamping groove 1209 on the clamping block 1206, the support arm 1210 moves downwards along the through hole 1211 under the action of gravity, so that the floor slab template 2 is separated from the floor slab concrete and descends for a certain distance, and then the floor slab template 2 is manually taken down, other tools are not needed during early dismantling, the operation is convenient and simple, the labor is saved, the abrasion of the early dismantling column head can be greatly reduced, and meanwhile, the mode of knocking the early dismantling column head is abandoned, the problem that a support system is unstable due to knocking can be completely solved, and through the arrangement of the rotating handle 1109, the rotating sleeve 1108 and the limiting ring 1110, can adjust the height of screw thread post 1105 wantonly, thereby can use the floor of co-altitude, high adaptability, and when demolising, also can drop screw thread post 1105 height through rotatory cover 1108 that rotates, thereby reach the purpose of convenient to detach template supporting mechanism 1, overall structure adopts the first-prop after-mount method, can improve floor template 2's installation effectiveness greatly, can carry out design mass production to floor template 2 simultaneously, the production degree of difficulty and manufacturing cost have been reduced, at last because tray 1214 is cylindrical, and bracket 201 is the arc of agreeing with tray 1214, after tray 1214 descends along with support arm 1210, one side downward sloping of floor template 2, one side of floor template 2 still can be built on tray 1214 this moment, can avoid floor template 2 when early tearing open to drop the problem that causes the potential safety hazard.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an advance prop up the back dress and stereotype early formwork system of tearing open, includes template supporting mechanism (1) and floor template (2), its characterized in that: the formwork supporting mechanism (1) consists of a supporting component (11) and an early-dismantling component (12), wherein the early-dismantling component (12) is fixedly arranged on the outer wall of the top of the supporting component (11), and the floor slabs (2) are erected on the plurality of groups of formwork supporting mechanisms (1);

the early-dismantling assembly (12) comprises a fixed seat (1201) fixedly connected to the outer wall of a threaded column (1105), the fixed seat (1201) is rotatably connected with one end of a rotating handle (1202), the outer wall of the rotating handle (1202), which is close to the fixed seat (1201), is hinged with the outer wall of a movable ring (1204) through a connecting piece (1203), the movable ring (1204) is sleeved on the outer wall of the threaded column (1105), the outer wall of the movable ring (1204) is further hinged with the bottom surface of a clamping block (1206) through a hinge piece (1205), the clamping block (1206) is slidably connected to a fixed block (1207), the fixed block (1207) is fixedly connected to the outer wall of the threaded column (1105), one side of the clamping block (1206), which is close to the threaded column (1105), is provided with a movable groove (1211) and a clamping groove (1209), a U-shaped support arm (1210) is clamped in the clamping groove (1209), the support arm (1210) penetrates through a through hole (1211) formed in the threaded column (1105), two side walls of two ends of the support arm (1210) are fixedly connected to a sliding block (1212) which is provided with a sliding block (1212) groove (1212), and a sliding block (1213) formed in a sliding block (1212) groove (201) formed in the outer wall of a sliding block (1210), bracket (201) and tray (1214) cooperation are used, supporting component (11) are including setting up base plate (1101) subaerial, base plate (1101) rigid coupling is in the bottom that inserts post (1102), it pegs graft in patchhole (1104) of support column (1103) bottom to insert post (1102), swing joint has screw thread post (1105) on support column (1103), the outer wall threaded connection of screw thread post (1105) has rotation cover (1108), the outer wall that rotates cover (1108) has set firmly two and has changeed handle (1109), the inner wall rigid coupling that rotates cover (1108) has spacing ring (1110), spacing ring (1110) swing joint is in spacing groove (1111) of seting up on support column (1103) top outer wall, the top rigid coupling of screw thread post (1105) has top support (1112).

2. The early-branch-later-fixing and early-dismantling formwork system as claimed in claim 1, wherein: the bottom end of the threaded column (1105) is fixedly connected with a square column (1106), and the square column (1106) is slidably connected in a square groove (1107) formed in the supporting column (1103).

3. The pre-supporting post-sizing early-dismantling formwork system as claimed in claim 1, wherein: the periphery of the floor slab template (2) is provided with a notch, the notch corresponds to the position of the jacking (1112), and the surface of the jacking (1112) is flush with the surface of the floor slab template (2).

4. The pre-supporting post-sizing early-dismantling formwork system as claimed in claim 1, wherein: the grid plates (202) are fixedly arranged in the floor slab template (2), and the floor slab template (2) and the grid plates (202) are integrally formed.

5. The construction method of a pre-supporting and post-setting early-dismantling formwork system as claimed in any one of claims 1 to 4, wherein: the method comprises the following steps:

early template building work:

s1, locking the early-dismantling assembly (12), manually lifting the supporting arm (1210), manually rotating the rotating handle (1202) downwards, enabling the movable ring (1204) to move downwards under the action of the connecting piece (1203), enabling the clamping block (1206) to move towards the threaded column (1105) under the action of the movable ring (1204) through the hinge piece (1205), until the supporting arm (1210) is clamped in the clamping groove (1209) on the clamping block (1206), loosening the rotating handle (1202), and finishing the fixation of the support block (1214);

s2, installing a support assembly (11), placing the insertion column (1102) and the base plate (1101) on the bottom surface, aligning an insertion hole (1104) at the bottom end of the support column (1103) with the insertion column (1102), inserting the support column (1103) to the outer side of the insertion column (1102), and enabling the support column (1103) to stand;

s3, adjusting the height of the jacking (1112), rotating the rotating handle (1109) to enable the rotating sleeve (1108) to rotate, enabling the rotating sleeve (1108) to enable the threaded column (1105) to move through the action of threads, enabling the threaded column (1105) to move and adjusting the height of the jacking (1112) until the jacking (1112) is consistent with the required height of a floor slab;

s4, installing the floor slab template (2), and enabling a bracket (201) at the bottom of the floor slab template (2) to correspond to the support block (1214) in position, so that the floor slab template (2) is sequentially erected on the support block (1214);

s5, after the plurality of floor slab templates (2) are completely erected, carrying out floor slab concrete pouring work;

early-dismantling formwork dismantling work:

s6, removing the floor slab template (2), after the floor slab concrete reaches early-dismantling strength, manually rotating the rotating handle (1202) upwards and enabling the clamping block (1206) to be far away from the threaded column (1105), when the supporting arm (1210) is separated from the clamping groove (1209) on the clamping block (1206), under the action of gravity, the supporting arm (1210) moves downwards along the through hole (1211) to enable the floor slab template (2) to be separated from the floor slab concrete and descend for a certain distance, then manually taking down the floor slab template (2), and keeping the template supporting mechanism (1);

s7, removing the formwork supporting mechanism (1), when the floor concrete meets the formwork removing requirement, rotating the rotating handle (1109) and enabling the threaded column (1105) to descend under the action of the rotating sleeve (1108), and removing the formwork supporting mechanism (1) after the jacking (1112) is separated from the floor concrete.