Template support system and erection and disassembly method for improving turnover rate of floor slab pouring template

Abstract

The application discloses a formwork support system for improving the turnover rate of floor slab pouring formworks and a mounting and dismounting method thereof, solves the problem of how to greatly improve the formwork turnover rate, adopts small formworks in floor slab pouring areas with higher solidification strength requirements, adopts large formworks in other floor slab pouring areas, splices the small formworks and the large formworks, supports the large formworks by using traditional full-support frames, adopts the form of directly supporting the small formworks by support columns under the small formworks, and integrally arranges the support keels under the small formworks and the support keels under the large formworks, so as to form an integral formwork support system; after the solidification strength of most of the concrete of the floor slab reaches the requirement, all the support keels and the large formworks are dismounted, only the small formworks and the support columns under the small formworks are left, and the formwork and the support materials are rapidly turned over.

Description

TECHNICAL FIELD

[0001] The present application relates to a concrete pouring formwork, in particular to a formwork support system capable of improving the reusability of a floor slab pouring formwork and a method for assembling and disassembling the same. BACKGROUND

[0002] At present, in the construction of pouring a concrete floor slab using a wooden formwork, the removal of the bottom formwork of the poured floor slab requires the concrete strength of the poured floor slab to reach more than 75% of the design strength, and especially for some cantilever members, the concrete strength needs to reach 100% of the design strength before the support formwork can be removed. This construction method results in a low turnover rate of the formwork, and often causes the formwork of a partially poured floor slab with a higher local strength requirement to not meet the removal conditions, resulting in the formwork of the entire floor slab being in a state of being ready to be removed, which reduces the turnover efficiency of the bottom formwork of the poured floor slab. How to achieve a higher strength requirement of the concrete floor slab while still being in a support state, and to timely remove the support formwork of the floor slab that has reached the design requirement, so as to greatly improve the turnover rate of the formwork, has become a problem that needs to be solved on site. SUMMARY

[0003] The present application improves a formwork support system capable of improving the turnover rate of a floor slab pouring formwork and a method for assembling and disassembling the same, which solves the technical problem of how to greatly improve the turnover rate of the formwork.

[0004] The present application solves the above technical problems by the following technical solutions:

[0005] The general idea of the present application is to divide the pouring bottom formwork of the floor slab into regions, use small formworks in the floor slab pouring regions that require a higher solidification strength, and use large formworks in other floor slab pouring regions. The small formworks and the large formworks are spliced to form the pouring bottom formwork of the entire floor slab. The large formworks are supported by traditional full-frame supports, and the small formworks are directly topped by support columns. The support keels under the small formworks and the support keels under the large formworks are integrally arranged to form an overall formwork support system. When the solidification strength of most of the concrete of the floor slab meets the requirements, all the support keels and the large formworks are removed, leaving only the small formworks and the support columns thereunder. This speeds up the turnover of most of the support components and the large formworks, and ensures the safe support of the local floor slab pouring regions that require a higher solidification strength.

[0006] The template support system for improving the turnover rate of floor pouring formwork comprises a small formwork and a large formwork, the small formwork and the large formwork are spliced to form a bottom formwork for pouring a floor, a secondary keel is arranged on the lower bottom surface of the bottom formwork at intervals, a large formwork lower main keel is arranged on the lower bottom surface of the secondary keel below the large formwork, a large formwork lower support column is arranged at the intersection of the large formwork lower main keel and the secondary keel, a small formwork top support seat is arranged on the lower bottom surface of the small formwork at intervals, a small formwork lower support column is abutted on the small formwork top support seat, a liftable jacking screw column is screwed into the upper end of the small formwork lower support column, and the small formwork lower support column is abutted on the small formwork top support seat through the liftable jacking screw column; a pair of support cantilever rods are arranged on the side wall of the upper part of the liftable jacking screw column, a support plate is arranged on the pair of support cantilever rods, an eccentric cross-shaped through hole is arranged on the support plate, the liftable jacking screw column is movably inserted into the cross-shaped through hole on the support plate, a U-shaped bracket is arranged above the support plate, a through hole is arranged on the bottom arc plate of the U-shaped bracket, the liftable jacking screw column is movably inserted into the through hole, a small formwork lower first main keel is abutted on the U-shaped bracket on one side of the through hole, and a small formwork lower second main keel is abutted on the U-shaped bracket on the other side of the through hole; and the small formwork lower first main keel and the small formwork lower second main keel are both abutted on the lower bottom surface of the secondary keel.

[0007] A jacking screw column locking nut is screwed into the lower end of the liftable jacking screw column; the secondary keel and the large formwork lower main keel are cross arranged, the secondary keel and the small formwork lower first main keel are cross arranged, and the secondary keel and the small formwork lower second main keel are cross arranged; and the small formwork lower first main keel and the small formwork lower second main keel are parallel arranged.

[0008] A method for assembling and disassembling the template support system for improving the turnover rate of floor pouring formwork, characterized by the following steps:

[0009] In the first step, small formworks are used in areas with high requirements for disassembly strength of cast-in-place concrete floors, and large formworks are used in other areas, and the small formworks and the large formworks are spliced to form a bottom formwork for pouring the cast-in-place concrete floors;

[0010] In the second step, full-frame supports including large formwork lower support columns are erected on the lower layer floor which has been poured and completed directly below the area where the large formwork is used as the bottom formwork for pouring the concrete floor, a large formwork lower main keel is arranged on the upper end of the full-frame supports, a secondary keel is arranged on the large formwork lower main keel, and a large formwork is arranged on the secondary keel;

[0011] In the third step, small formworks are arranged on areas with high requirements for disassembly strength of the poured concrete floors, the small formworks are arranged on the secondary keel which has been erected in the second step, and the small formworks and the large formworks are spliced to form the entire bottom formwork for the cast-in-place concrete floors;

[0012] Fourth step, the small template under the support column is set on the lower floor slab which has been poured, the top wire column lock nut is screwed at the lower end of the liftable top wire column, and then the liftable top wire column is screwed at the upper end of the small template under the support column;

[0013] Fifth step, the support plate is connected at the upper end of the liftable top wire column through the eccentric cross-shaped through hole on the support plate, and the support plate is supported on a pair of support cantilever rods, and then the U-shaped bracket is connected at the upper end of the liftable top wire column through the through hole on the bottom arc plate of the U-shaped bracket, and the U-shaped bracket is supported on the support plate;

[0014] Sixth step, the small template under the first main keel and the small template under the second main keel are respectively placed on the U-shaped bracket on both sides of the liftable top wire column, the liftable top wire column is lifted by rotating the liftable top wire column, until the small template under the first main keel and the small template under the second main keel are all in contact with the lower bottom surface of the secondary keel, and the top end surface of the liftable top wire column is in contact with the small template top support seat on the lower bottom surface of the small template, and finally the liftable top wire column is locked by rotating the top wire column lock nut; thus the bottom template of the pouring floor slab is completed and the support work is completed;

[0015] Seventh step, the floor slab concrete is poured;

[0016] Eighth step, when the strength of the floor slab concrete in the area outside the small template reaches the design requirement value, the full-frame support directly below the large template is removed, then the support plate is horizontally knocked, the support plate is horizontally moved, a pair of support cantilever rods are moved into the cross-shaped through hole, the support plate loses the support of the pair of support cantilever rods, the support plate and the U-shaped bracket fall synchronously, the small template under the first main keel and the small template under the second main keel fall, and the support of the small template under the first main keel and the small template under the second main keel to the secondary keel is removed;

[0017] Ninth step, the large template under the main keel, the small template under the first main keel, the small template under the second main keel and the secondary keel are removed and recycled; at this time, the concrete area above the small template is still supported by the small template, the small template under the support column and the liftable top wire column.

[0018] The present application can greatly reduce the one-time investment amount of the template, shorten the construction period and speed up the construction speed; it is particularly suitable for some projects with tight construction period to realize the rapid turnover of the template and supporting materials. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structural schematic diagram of the present application;

[0020] Figure 2 is a structural schematic diagram of the present application in the upward direction;

[0021] Figure 3 is the structural diagram of the bottom template which is spliced by the small template 1 and the large template 2;

[0022] Figure 4 is the structural diagram of the liftable jackscrew column 10 and the mechanism connected thereto;

[0023] Figure 5 is the cooperation diagram of the liftable jackscrew column 10 and the pair of support cantilever rods 12;

[0024] Figure 6 is the structural diagram of the U-shaped bracket 9 of the present application;

[0025] Figure 7 is the structural diagram of the support plate 13 supported on the pair of support cantilever rods 12;

[0026] Figure 8 is the structural diagram of the pair of support cantilever rods 12 entering into the cross-shaped through hole 14. Embodiment

[0027] The present application will be described in detail below with reference to the accompanying drawings:

[0028] The application discloses a formwork support system for improving the turnover rate of floor pouring formwork, which comprises small formwork 1 and large formwork 2, the small formwork 1 and the large formwork 2 are spliced into a bottom formwork for pouring floor, and the secondary keels 3 are arranged on the lower bottom surface of the bottom formwork in parallel at intervals, the secondary keels 3 under the small formwork 1 and the large formwork 2 are uniformly arranged without being divided into areas, the primary keels under the secondary keels 3 are arranged in areas according to the corresponding sizes of the formwork, the large formwork lower primary keel 4 is arranged on the lower bottom surface of the secondary keel 3 under the large formwork 2, the large formwork lower support column 5 is arranged at the intersection of the large formwork lower primary keel 4 and the secondary keel 3, and the top end of the large formwork lower support column 5 is abutted on the lower bottom surface of the large formwork lower primary keel 4 at the intersection, the small formwork top support seat 16 is arranged on the lower bottom surface of the small formwork 1 at intervals, the small formwork lower support column 8 is abutted on the small formwork top support seat 16, the liftable jacking column 10 is screwed in the upper end of the small formwork lower support column 8, the small formwork lower support column 8 is abutted on the small formwork top support seat 16 through the liftable jacking column 10, the top end of the liftable jacking column 10 on the small formwork lower support column 8 is directly abutted on the lower bottom surface of the small formwork 1, the pair of support cantilever rods 12 is arranged on the side wall of the upper part of the liftable jacking column 10, the pair of support cantilever rods 12 is fixed on the side wall of the liftable jacking column 10 and is lifted along with the rotation and lifting of the liftable jacking column 10, the eccentric cross-shaped through hole 14 is arranged on the support plate 13, the liftable jacking column 10 is movably inserted into the cross-shaped through hole 14 on the support plate 13, the U-shaped bracket 9 is arranged above the support plate 13, the through hole 17 is arranged on the bottom arc plate of the U-shaped bracket 9, the liftable jacking column 10 is movably inserted into the through hole 17, the support plate 13 and the U-shaped bracket 9 are sequentially sleeved on the upper end of the liftable jacking column 10, the pair of support cantilever rods 12 forms the support of the support plate 13, the support plate 13 forms the support of the U-shaped bracket 9, the small formwork lower first primary keel 6 is abutted on the U-shaped bracket 9 on one side of the through hole 17, the small formwork lower second primary keel 7 is abutted on the U-shaped bracket 9 on the other side of the through hole 17, the small formwork lower first primary keel 6 and the small formwork lower second primary keel 7 are abutted on the lower bottom surface of the secondary keel 3 by rotating and adjusting the liftable jacking column 10, so that the small formwork 1 is abutted and supported by the secondary keel 3, the secondary keel 3 is abutted and supported by the small formwork lower first primary keel 6 and the small formwork lower second primary keel 7, the small formwork lower first primary keel 6 and the small formwork lower second primary keel 7 are lifted by the U-shaped bracket 9, the U-shaped bracket 9 is supported by the support plate 13, the support plate 13 is supported by the pair of support cantilever rods 12 on the upper end of the liftable jacking column 10, and the liftable jacking column 10 is supported by the small formwork lower support column 8.

[0029] At the lower end of the elevatable jackscrew column 10, a jackscrew column locking nut 11 is screwed, and when the height of the elevatable jackscrew column 10 is adjusted to the right position, it is fixed by the jackscrew column locking nut 11; the secondary keel 3 and the lower main keel 4 of the large formwork are cross-set, the secondary keel 3 and the lower first main keel 6 of the small formwork are cross-set, and the secondary keel 3 and the lower second main keel 7 of the small formwork are cross-set; the lower first main keel 6 of the small formwork and the lower second main keel 7 of the small formwork are arranged in parallel to each other.

[0030] A method for erecting and disassembling a formwork support system for improving the turnover rate of floor slab pouring formworks, characterized by the following steps:

[0031] First step, in the area where the disassembly strength requirement of the cast-in-place concrete floor slab is high, a small formwork 1 is used, and in other areas, a large formwork 2 is used, and after the small formwork 1 and the large formwork 2 are spliced, a pouring bottom formwork of the cast-in-place concrete floor slab is formed;

[0032] Second step, on the lower layer floor slab which has been poured and completed directly below the area where the large formwork 2 is prepared to be used as the bottom formwork of the floor slab pouring concrete, a full-frame support including a large formwork lower support column 5 is erected, a large formwork lower main keel 4 is arranged at the upper end of the full-frame support, a secondary keel 3 is arranged on the large formwork lower main keel 4, and a large formwork 2 is arranged on the secondary keel 3;

[0033] Third step, on the area of the poured concrete floor slab where the disassembly strength requirement is high, a small formwork 1 is arranged on the secondary keel 3 which has been erected in the second step, so that after the small formwork 1 and the large formwork 2 are spliced, the entire bottom formwork of the cast-in-place concrete floor slab is formed;

[0034] Fourth step, on the lower layer floor slab which has been poured and completed directly below the small formwork 1, a small formwork lower support column 8 is arranged, the jackscrew column locking nut 11 is first screwed at the lower end of the elevatable jackscrew column 10, and then the elevatable jackscrew column 10 is screwed into the upper end port of the small formwork lower support column 8;

[0035] Fifth step, the support plate 13 is connected through the eccentric cross-shaped through hole 14 on it to the upper end of the elevatable jackscrew column 10, and the support plate 13 is supported on a pair of support cantilever beams 12, and then the U-shaped bracket 9 is connected through the through hole 17 on the bottom arc plate to the upper end of the elevatable jackscrew column 10, so that the U-shaped bracket 9 is supported on the support plate 13;

[0036] Sixth step, the first small template under the main keel 6 and the second small template under the main keel 7 are placed on the U-shaped bracket 9 on both sides of the liftable top wire column 10 respectively, the whole liftable top wire column 10 is lifted by rotating the liftable top wire column 10, until the first small template under the main keel 6 and the second small template under the main keel 7 are all on the lower bottom surface of the secondary keel 3, and at the same time, the top end surface of the liftable top wire column 10 is on the small template top support seat 16 on the lower bottom surface of the small template 1, finally, the liftable top wire column 10 is locked by rotating the top wire column locking nut 11, thereby completing the erection and support work of the bottom formwork of the whole pouring floor slab;

[0037] Seventh step, pouring the floor slab concrete 15;

[0038] Eighth step, when the strength of the floor slab concrete 15 outside the pouring area on the small template 1 reaches the design requirement value, first remove the full-batten support directly below the large formwork 2, then horizontally knock the support plate 13, the support plate 13 moves horizontally, moves a pair of support cantilever rods 12 into the cross-shaped through hole 14, so that the support plate 13 loses the support of a pair of support cantilever rods 12, the support plate 13 and the U-shaped bracket 9 fall synchronously, driving the first small template under the main keel 6 and the second small template under the main keel 7 to fall, so that the support of the first small template under the main keel 6 and the second small template under the main keel 7 to the secondary keel 3 is removed;

[0039] Ninth step, remove the main keel 4 under the large formwork, the first small template under the main keel 6, the second small template under the main keel 7 and the secondary keel 3, and use them for circulation; At this time, the concrete area above the small template 1 is still supported by the small template 1, the small template support column 8 and the liftable top wire column 10.

Claims

1. A formwork support system for improving the turnover rate of floor slab pouring formwork, comprising small formworks (1) and large formworks (2), the small formworks (1) and the large formworks (2) being spliced to form a bottom formwork for pouring a floor slab, secondary keels (3) being arranged on the lower bottom surface of the bottom formwork at intervals, a large formwork lower main keel (4) being arranged on the lower bottom surface of the secondary keels (3) below the large formworks (2), and a large formwork lower support column (5) being arranged at the intersection of the large formwork lower main keel (4) and the secondary keels (3), characterized in that, On the lower bottom surface of the small template (1), small template top support seats (16) are arranged at intervals, small template lower support columns (8) are top-connected on the small template top support seats (16), and liftable jack columns (10) are screwed into the upper ends of the small template lower support columns (8), the small template lower support columns (8) are top-connected on the small template top support seats (16) through the liftable jack columns (10); a pair of support cantilever rods (12) are arranged on the side walls of the upper parts of the liftable jack columns (10), a support plate (13) is arranged on the pair of support cantilever rods (12), an eccentric cross-shaped through hole (14) is arranged on the support plate (13), the liftable jack columns (10) are movably connected in the cross-shaped through hole (14) on the support plate (13), a U-shaped bracket (9) is arranged above the support plate (13), a through hole (17) is arranged on the bottom arc-shaped plate of the U-shaped bracket (9), the liftable jack columns (10) are movably connected in the through hole (17), and a small template lower first main keel (6) is top-connected in the U-shaped bracket (9) on one side of the through hole (17), and a small template lower second main keel (7) is top-connected in the U-shaped bracket (9) on the other side of the through hole (17), the small template lower first main keel (6) and the small template lower second main keel (7) are both top-connected on the lower bottom surface of the secondary keel (3); A jack column locking nut (11) is screwed on the lower end of the liftable jack column (10); the secondary keel (3) and the large template lower main keel (4) are cross-connected, the secondary keel (3) and the small template lower first main keel (6) are cross-connected, and the secondary keel (3) and the small template lower second main keel (7) are cross-connected; the small template lower first main keel (6) and the small template lower second main keel (7) are arranged in parallel.

2. The method according to claim 1, wherein the steps are as follows: first step, small templates (1) are used in areas with high requirements for the strength of the removed formwork of the cast-in-place concrete floor slab, and large templates (2) are used in other areas, and the small templates (1) and the large templates (2) are spliced to form a bottom formwork for the cast-in-place concrete floor slab; second step, full-frame supports including a large template lower support column (5) are erected on the lower layer floor slab that has been cast and completed directly below an area where the large template (2) is used as a bottom formwork for the cast-in-place concrete floor slab, a large template lower main keel (4) is arranged on the upper end of the full-frame support, a secondary keel (3) is arranged on the large template lower main keel (4), and the large template (2) is arranged on the secondary keel (3); third step, small templates (1) are arranged on areas of the cast-in-place concrete floor slab with high requirements for the strength of the removed formwork, and the small templates (1) are arranged on the secondary keel (3) that has been erected in the second step, so that the small templates (1) and the large templates (2) are spliced to form the entire bottom formwork for the cast-in-place concrete floor slab. ​ ​ ​ Fourth step, set small template under support column (8) on the lower floor slab which has been poured and completed directly below small template (1), first screw top wire column locking nut (11) on the lower end of liftable top wire column (10), then screw liftable top wire column (10) in the upper end port of small template under support column (8); Fifth step, pass support plate (13) through eccentric cross-shaped through hole (14) on it on the upper end of liftable top wire column (10), and make support plate (13) support on a pair of support cantilevered rods (12), then pass U-shaped bracket (9) through through hole (17) on the bottom arc plate of it on the upper end of liftable top wire column (10), and make U-shaped bracket (9) support on support plate (13); Sixth step, place small template under first main keel (6) and small template under second main keel (7) on U-shaped bracket (9) on both sides of liftable top wire column (10) respectively, make the whole liftable top wire column (10) rise by rotating liftable top wire column (10), until small template under first main keel (6) and small template under second main keel (7) all top on the lower bottom surface of secondary keel (3), and at the same time, the top end surface of liftable top wire column (10) top on small template top bracket (16) on the lower bottom surface of small template (1), finally, lock liftable top wire column (10) by rotating top wire column locking nut (11); thus complete the erection and support work of the bottom formwork of the whole poured floor slab; Seventh step, pour floor slab concrete (15); Eighth step, when the strength of floor slab concrete (15) outside the poured concrete area on small template (1) reaches the design requirement value, first remove full-frame support directly below large formwork (2), then horizontally knock support plate (13), support plate (13) moves horizontally, move a pair of support cantilevered rods (12) into cross-shaped through hole (14), so that support plate (13) loses the support of a pair of support cantilevered rods (12), support plate (13) and U-shaped bracket (9) fall synchronously, drive small template under first main keel (6) and small template under second main keel (7) to fall, so that the support of small template under first main keel (6) and small template under second main keel (7) to secondary keel (3) is released; Ninth step, remove large formwork under main keel (4), small template under first main keel (6), small template under second main keel (7) and secondary keel (3) for circulation; at this time, the concrete area above small template (1) is still supported by small template (1), small template under support column (8) and liftable top wire column (10).

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