CN107217840A - A kind of regularization template external corner reinforcement system - Google Patents

Abstract

The invention discloses a stereotyped formwork external angle reinforcement system, which relates to the technical field of formwork engineering. The invention includes a template, a main back flute and a secondary back flute, and also includes a retainer back flute and a blocking sheet. The invention can conveniently and stably reinforce the external corners of the concrete formwork through the specially-made stereotyped components. The connection function can make the main back flute, the back support back flute and the retainer bite each other, and the connection is tight, which can better fix the angle of the concrete formwork, and can also prevent the deformation of the concrete formwork caused by external forces and improve the forming quality. .

Description

A stereotyped external angle reinforcement system of formwork

technical field

The invention relates to the technical field of formwork engineering.

Background technique

The traditional formwork reinforcement system is composed of wood-glued formwork + square wood + steel pipe. Due to the small rigidity of the square wood, poor manufacturing accuracy, and the line contact between the steel pipe and the wood square, it is easy to cause poor concrete molding quality, irregular yin and yang angles, and grout leakage. , The actual measured quantity is not up to the standard and many other quality problems.

Contents of the invention

The invention provides a stereotyped formwork external angle reinforcement system, aiming to solve the problem of poor shaping effect during concrete pouring in the prior art.

The invention provides a stereotyped formwork positive angle reinforcement system, comprising a formwork, a main back corrugated and a secondary back corrugated, the secondary back corrugated top brace is on the outside of the template, the main back corrugated top brace is placed on the secondary back corrugated The outer side of the flute also includes a male corner lock. The male corner lock includes a back flute and a blocking piece. The back flute is provided with a back flute connector along the main axis of itself; the blocking piece includes a friction plate. and a support plate, the support plate is fixed on the edge of the opposite side of the friction plate, and the support plate is perpendicular to the friction plate; The vertical support of the retainer back flute is fixed on the main back flute through the retainer back flute connecting piece on the main back flute, and the blocking piece is fixed on the main back flute through the blocking piece connecting piece. The support plate abuts against the back rib of the retainer.

Further, in the above-mentioned external corner reinforcement system of a stereotyped formwork, the connecting member of the blocking piece includes a main back flute card, and the main back flute card is fixed on the front of the friction plate, and the main back flute card is connected with the front of the friction plate. The main back flute card connection.

Further, in the above-mentioned external angle reinforcement system of a stereotyped formwork, a first bolt hole is provided in the middle part of the friction plate of the baffle, the connecting part of the baffle includes a first bolt, and the main back flute is provided with a bolt hole. A first through hole corresponding to the first bolt hole.

Further, in the above-mentioned external corner reinforcement system of a stereotyped formwork, the retainer back flute includes a retainer strut, and claws are provided at the end of the retainer strut.

Further, in the above-mentioned external angle reinforcement system of a shaped formwork, the back flute of the retaining brace includes two retaining struts and a retaining strut connecting piece, and the two retaining struts pass through the retaining strut connecting piece , the two retaining struts are arranged in parallel and there is a gap between the two retaining struts, and the connecting parts of the retaining struts are hook bolts.

Further, in the above-mentioned external corner reinforcement system of a stereotyped formwork, the connecting member of the retaining strut includes a retaining strut connecting bolt, a retaining strut limit sleeve and a retaining strut connecting nut, and the retaining strut connecting Bolts pass through the two stop braces and the stop brace limit sleeves and fasten the two stop braces through the stop brace connecting nuts, and the stop brace limit sleeves are located at Between the two barrier struts, and the limit sleeves of the barrier struts are supported on the two barrier struts.

Further, in the above-mentioned external angle reinforcement system of a stereotyped formwork, both ends of the barrier struts are provided with claws arranged in one direction, and the claws on the two barrier struts are in opposite directions.

Further, in the above-mentioned external corner reinforcement system of a shaped formwork, the blocking piece further includes a top plate, and the top plate is fixed on the opposite side of the friction plate and is located on the opposite side of the support plate.

Further, in the above-mentioned external corner reinforcement system of a shaped formwork, the blocking sheet also includes a back flute card for the back support, and the back flute card for the back support is fixed on the side where the support plate is in contact with the back flute of the back support. side.

Further, in the above-mentioned external angle reinforcement system of a stereotyped formwork, the main back flute is a double back flute structure, and the main back flute includes two main rods and main rod connectors, and the two main rods pass through The connecting parts of the main rods are connected, and the two main rods are arranged in parallel with a gap between the two main rods.

Further, in the above-mentioned external angle reinforcement system of a shaped formwork, the main back flute is provided with a telescopic structure for adjusting the length of the main back flute.

Further, in the above-mentioned external corner reinforcement system of a shaped formwork, the two main rods of the main back flute are provided with telescopic joint structures arranged in dislocation.

Further, in the above-mentioned external corner reinforcement system of a stereotyped formwork, the telescopic joint structure includes a sleeve rod and a telescopic rod, and the two sleeve rods are respectively sleeved on both ends of the telescopic rod.

Further, in the above-mentioned external angle reinforcement system of a stereotyped formwork, the main rod connecting piece includes a main rod connecting bolt, a main rod limit sleeve and a main rod connecting nut, and the main rod connecting bolt passes through two The main rod and the main rod limiting sleeve fasten the two main rods through the main rod connecting nut, the main rod limiting sleeve is located between the two main rods, and The limiting sleeves of the main rods are both supported on the two main rods.

The beneficial effects produced by the technical solution of the present invention are:

The external angle reinforcement system of a stereotyped formwork provided by the present invention can conveniently and stably reinforce the external angles of the concrete formwork through special shaped components. The double connection function of the back flute connector and the retainer connector can make the main back flute, the retainer back flute and the retainer interlock with each other, and the connection is tight, which can better fix the angle of the concrete formwork, and at the same time can Prevent deformation of concrete formwork caused by external force and improve molding quality.

Description of drawings

Fig. 1 is a structural representation of an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of the partially disassembled embodiment of Fig. 1;

Fig. 3 is a structural representation of an embodiment of the present invention;

Fig. 4 is a schematic diagram of the structure of the partially disassembled embodiment of Fig. 3;

Fig. 5 is a schematic structural view of the baffle of Fig. 3 embodiment;

Fig. 6 is a schematic structural view of the baffle of Fig. 1 embodiment;

Fig. 7 is a schematic cross-sectional structure diagram of the back flute of the embodiment of Fig. 3;

Fig. 8 is a schematic cross-sectional structure diagram of the back flute of the embodiment of Fig. 1;

Fig. 9 is a schematic cross-sectional structure diagram of the main back flute of Fig. 1 embodiment;

Fig. 10 is a schematic top view of the use state of the male corner lockset and the corresponding female corner lockset according to an embodiment of the present invention;

Fig. 11 is a schematic top view structural diagram of a female corner corresponding to an embodiment of the present invention;

Fig. 12 is a schematic top view of a supporting structure corresponding to an embodiment of the present invention.

The corresponding relationship of the marks in the above drawings is:

100 main back flute; 110 main rod; 111 sets of rods; 112 telescopic rods;

120 main rod connector; 121 main rod connecting bolt; 122 main rod limit sleeve; 123 main rod connecting nut;

200 back brace; 210 brace; 211 screw hole; 220 claw;

230 block strut connecting piece; 231 block strut connecting bolt; 232 block strut limit sleeve; 233 block strut connecting nut;

310 hook bolt; 320 screw;

400 block; 410 friction plate; 411 first bolt hole; 420 main back flute card; 430 top plate; 440 support plate; 441 back support back flute card;

510 back corrugated; 520 templates;

610 gasket;

710 braces; 720 diagonal braces;

800 internal angle lockset.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to accompanying drawings 1 to 8, a stereotyped formwork external angle reinforcement system provided by the present invention includes a formwork 520, a main back flute 100 and a secondary back flute 510, and the secondary back flute 510 is supported on the formwork 520 On the outside, the main back flute 100 is supported on the outside of the secondary back flute 510, and also includes a male corner lock. The male corner lock includes a retaining back flute 200 and a blocking piece 400, and the retaining back flute 200 is along its own The direction of the main axis is provided with a retaining back corrugated connector; the blocking plate 400 includes a friction plate 410 and a support plate 440, the support plate 440 is fixed on the edge of the opposite side of the friction plate 410, and the support plate 440 is connected to the The friction plate 410 is vertical; the retainer back flute 200 vertically supports the outside of the secondary back flute 510, and the retainer back flute 200 vertically props up on the main back flute 100 and passes through the retainer The back flute connector is fixed on the main back flute 100 , the retainer 400 is fixed on the main back flute 100 through the retainer connector, and the support plate 440 abuts against the retainer back flute 200 . The opposite side of the friction plate 410 refers to the side of the friction plate 410 away from the main flute 100 .

When in use, the formwork 520, the main back flute 100 and the secondary back flute 510 are preliminarily set up, and the retaining back flute 200 is set at the positive corner position, and then the retaining back flute 200 is initially connected to the main back flute with the retaining back flute connector 100, and then install the baffle 400 at the right angle formed by the back support back 200 and the main back 100, the friction plate 410 of the baffle 400 is closely attached to the main back 100, and at the same time the support plate 440 of the baffle 400 Withstand the support back flute 200, fix the blocking piece 400 on the main back flute 100 through the blocking piece connector, and finally fix the template 520, the main back flute 100, the secondary back flute 510 and the blocking piece 400 It is enough to fasten the retainer back corrugated connectors, baffle connectors and other structures that should be fastened securely.

The outside corner reinforcement system of a shaped formwork provided by the present invention can conveniently and stably reinforce the outside corners of the concrete formwork through special shaped components. Cooperating with the double connection function of the support back corrugated connector and the retainer connector, can make the main back corrugated 100, the retainer back corrugated 200 and the retainer 400 interlock with each other, and the connection is tight, which can better adjust the angle of the concrete formwork Fixing can also prevent the deformation of the concrete formwork caused by external force and improve the molding quality.

Further, with reference to accompanying drawings 5 and 6, in the aforesaid stereotyped formwork male corner reinforcement system, the retainer connector includes a main back corrugated card 420, and the main back corrugated card 420 is fixed on the friction The main back flute card 420 on the front side of the board 410 is clamped with the main back flute 100 . The front side of the friction plate 410 refers to the side of the friction plate 410 that is close to the main flute 100 .

Further, with reference to accompanying drawings 10 and 11, the aforesaid stereotyped formwork male corner reinforcement system also includes a female corner lock 800, the female corner lock 800 includes two vertically connected female corner back corrugations, One or two of the inner corner back flutes are the main back flutes 100, and the inner corner back flutes have a double back flute structure. The internal corner lock 800 is equivalent to an L-shaped bar, which is similar in shape to a square square. Fixing the internal corner lock 800 on the main back corrugated 100 at the internal corner position, or fixing it in the concrete through a screw can ensure that the angle of the internal corner is accurate.

Further, with reference to accompanying drawings 4 and 5, in the above-mentioned external corner reinforcement system of a shaped formwork, a first bolt hole 411 is provided in the middle of the friction plate 410 of the blocking plate 400, and the connecting piece of the blocking plate includes For the first bolt, the main back flute 100 is provided with a first through hole corresponding to the first bolt hole 411 . The first bolt passes through the first bolt hole 411 and the first through hole to connect the blocking piece 400 and the main flute 100 . The bolt connection is simple and effective. The main back flute 100 and the retainer 400 are fixed by the first bolt passing through the gap between the first bolt hole 411 and the two main rods 110 of the main back flute 100. The first bolt is located far away from the main back flute 100. A gasket 610 may be provided on one side of the blocking plate 400 to prevent slipping.

Further, referring to FIG. 7 , in the above-mentioned external angle reinforcement system of a shaped formwork, the end of the retainer back flute 200 is provided with claws 220 . The retainer back flute 200 clamps the main back flute 100 through the claws 220 . When in use, it is sufficient to support the retaining back flute 200 on the main back flute 100 through the claws 220 .

Further, referring to Fig. 7 , in the above-mentioned external corner reinforcement system of a shaped formwork, the back brace 200 includes a brace 210, and both ends of the brace 210 are provided with claws 220, The retainer strut 210 is hollow and has a screw hole 211 at the end, and the retainer back corrugated connector is a screw 320 . This kind of retaining corrugation 200 is suitable for strengthening the structure with two continuous external corners. The retaining corrugation 200 is fastened on the main corrugation 100 by using the screw 320, and the retaining corrugation 200 can be made by tightening one end of the screw 320. Tightening, the two ends of the back corrugated 200 are evenly stressed, and the entire external angle reinforcement system of the shaped formwork is not easy to deform.

Further, referring to the accompanying drawing 8, in the above-mentioned external corner reinforcement system of a shaped formwork, the said retaining brace back flute 200 includes two retaining struts 210 and retaining strut connectors 230, and the two retaining struts 210 passes through the retaining strut connector 230 , two retaining struts 210 are arranged in parallel and there is a gap between the two retaining struts 210 , and the retaining back corrugated connecting member is a hook bolt 310 . This retaining back flute 200 is suitable for reinforcing a single external corner structure, and can also be used to reinforce a structure with multiple external corners. The retaining back flute 200 is fastened on the main back flute 100 by hook bolts 310, which is convenient Adjust the position of the retaining back corrugated 200 to make the angle of the sun angle more accurate. In a specific embodiment of the present invention, the retainer back flute 200 is the main back flute 100 with claws 220 .

Further, referring to FIG. 8 , in the above-mentioned external angle reinforcement system of a stereotyped formwork, the connecting member 230 of the retaining strut includes a retaining strut connecting bolt 231 , a retaining strut limiting sleeve 232 and a retaining strut connection. Nut 233, the connecting bolt 231 of the blocking strut rod passes through the two blocking strut rods 210 and the limiting sleeve 232 of the blocking strut rod and connects the two blocking strut rods through the connecting nut 233 of the blocking strut rod 210 is fastened, and the stop strut limit sleeve 232 is located between the two stop struts 210 , and the stop strut limit sleeve 232 is supported on the two stop struts 210 . The distance between the stop braces 210 can be effectively ensured by using the stop brace limit sleeve 232 , and the stop brace limit sleeve 232 is also convenient to be hooked and fastened by the hook bolt 310 .

Further, with reference to accompanying drawings 7 and 8, in the aforesaid external angle reinforcement system of a stereotyped formwork, both ends of the retaining strut 210 are provided with one-way claws 220, and the two The claws 220 on the blocking strut 210 are in opposite directions. This kind of brace back flute 200 is suitable for strengthening the structure with two continuous external corners, the main back flute 100 of the two external corners is supported by the brace back flute 200, and the brace back flute 200 not only defines the angle of the outside corner but also limits the The distance between the two main back flutes is 100, the structure is simple, and the use is convenient.

Further, referring to FIG. 5 , in the above-mentioned external angle reinforcement system of a stereotyped formwork, the baffle 400 also includes a top plate 430, which is fixed on the opposite side of the friction plate 410 and is located on the support Opposite side of plate 440 . The setting of the top plate 430 is conducive to fine-tuning the position of the blocking plate 400. When adjusting, the top plate 430 can be knocked to adjust the position of the blocking plate 400, so as to prevent the other positions of the blocking plate 400 from being deformed or damaged by knocking when the position of the blocking plate 400 is adjusted.

Further, referring to the accompanying drawing 6, in the above-mentioned external corner reinforcement system of a shaped formwork, the retainer 400 also includes a retainer back corrugated card 441, and the retainer back corrugated card 441 is fixed on the support plate 440 The side surface in contact with the back flute 200 of the retainer. The retainer back flute card 441 is used to block the retainer back flute 200, which can prevent the retainer back flute 200 from rotating along the axial direction of the main back flute 100, resulting in angle deviation.

Further, referring to accompanying drawing 9, in the above-mentioned external angle reinforcement system of a shaped formwork, the main back flute 100 is a double back flute structure, and the main back flute 100 includes two main rods 110 and main rod connectors 120 , the two main rods 110 are connected by the main rod connector 120 , the two main rods 110 are arranged in parallel with a gap between the two main rods 110 .

Further, referring to FIG. 9 , in the above-mentioned external angle reinforcement system of a shaped formwork, the main back flute 100 is provided with a telescopic structure for adjusting the length of the main back flute 100 . The position of the corner will generate requirements for the length of the main back flute 100, and the telescopic structure can adjust the length of the main back flute 100 to prevent waste caused by directly cutting off the main back flute 100.

Further, referring to FIG. 9 , in the above-mentioned external angle reinforcement system of a stereotyped formwork, the two main rods 110 of the main back flute 100 are provided with dislocated expansion joint structures. The dislocation-set expansion joint structure can effectively ensure the stressed state of the main back corrugated 100 and prevent damage caused by local slippage or mold expansion.

Further, referring to accompanying drawing 9, in the above-mentioned external angle reinforcement system of a stereotyped formwork, the telescopic joint structure includes a sleeve rod 111 and a telescopic rod 112, and the two sleeve rods 111 are respectively socketed on the telescopic rod 112 at both ends. The sleeve rod structure is the most simple and effective. The sleeve rod 111 and the telescopic rod 112 can be slidably connected, and can also be fixedly connected by a fastening structure, which is simple and convenient to use.

Further, referring to FIG. 9 , in the above-mentioned external angle reinforcement system of a stereotyped formwork, the main rod connecting piece 120 includes a main rod connecting bolt 121 , a main rod limiting sleeve 122 and a main rod connecting nut 123 . The main rod connecting bolts 121 pass through the two main rods 110 and the main rod limit sleeve 122 and fasten the two main rods 110 through the main rod connecting nuts 123, the main rod limit The positioning sleeve 122 is located between the two main rods 110 , and the main rod limiting sleeves 122 are both supported on the two main rods 110 .

Further, with reference to the accompanying drawing 12, the above-mentioned external angle reinforcement system of a stereotyped formwork also includes an externally pulled outrigger structure, which includes a brace 710 and a diagonal brace 720, and the brace 710 The middle part is provided with a turnbuckle bolt, and the diagonal brace 720 is a telescopic rod structure, and the telescopic rod structure is a lead screw type telescopic rod structure. The diagonal braces 720 are arranged near the braces 710, one brace and one pull, which can effectively ensure the accuracy of the position of the formwork. Wherein the turnbuckle bolt is used to adjust the tightness of the brace 710, and the lead screw type telescopic rod structure is used to adjust the top support position of the diagonal brace 720.

The present invention will be further described below in combination with specific engineering examples using the external corner reinforcement system of the stereotyped formwork provided by the present invention.

1 Introduction

The scale of construction is expanding, the consumption of construction materials is increasing, forest resources are becoming increasingly scarce, and the contradiction between domestic timber supply and demand is becoming increasingly prominent. It is imperative to save and substitute timber in the field of construction.

In order to achieve the purpose of saving resources and improving efficiency, our project department has improved the traditional formwork system through investigations, using shaped galvanized square steel instead of traditional wooden squares as the main and secondary keels of the formwork, and mixed with double-sided film-coated multilayer panels A new type of template system. This technology is easy to operate and has been applied in the physical engineering of our project. The comprehensive benefits are obvious and the prospect of popularization and application is good. The promotion and application of the square steel keel formwork system can save more timber resources and create greater social and economic benefits.

2. Construction method characteristics

The traditional formwork reinforcement system is composed of wood-glued formwork + square wood + steel pipe. Due to the small rigidity of the square wood, poor manufacturing accuracy, and the line contact between the steel pipe and the wood square, it is easy to cause poor concrete molding quality, irregular yin and yang angles, and grout leakage. , The actual measured quantity is not up to the standard and many other quality problems.

The stereotyped formwork reinforcement construction technology improves the reinforcement materials in the traditional method. It is composed of double-layer film-coated multi-layer board + square steel pipe secondary back corrugation + double steel pipe main back corrugation, which successfully solves the above common quality problems and improves the actual measurement. Quality issues such as actual results.

The stereotyped formwork reinforcement construction technology has the following technical characteristics:

(1) The square steel pipe has high rigidity, accurate dimensional accuracy, safety, reliability, simplicity and efficiency. It is not easy to deform, and has a large contact area with the formwork and the primary and secondary back corrugations, effectively avoiding the influence of back corrugation deformation on the formwork support system.

(2) It adopts unified stereotyped processing and production, with uniform specifications, convenient installation and disassembly, improved construction efficiency, high turnover rate and reduced material consumption. The construction is simpler, more convenient and more efficient.

(3) The structural size and visual quality of the concrete after molding are better, which improves the results of actual measurement and measurement and reduces the cost of later decoration.

(4) The shape and size of the components are flexible and changeable, meeting the requirements of various sizes of the building structure. The products can be combined at will, and can be used repeatedly in multiple projects. The number of turnovers is large, and the recovery cost is high, and the amortization cost is low. Comprehensive Significant economic benefits.

(5) Light weight, small size, easy to transport. The square steel keel is small in size and light in weight. The longest member is 4.2 meters and weighs no more than 13kg, and most of it is 2.7m, no more than 8kg. During construction, it is only necessary to set up a tower crane with a lifting capacity of less than 5t to complete the vertical transportation of the formwork. Compared with the large formwork process, it can save 25% of the cost of the mechanical shift. The comprehensive economic benefit is remarkable. Galvanized square steel replaces wooden squares, and transforms low-value consumables in the project into turnover materials. The square steel keel can be reused in multiple construction projects, and can be used more than 300 times, with low amortization costs.

(6) It occupies a small construction site, which has obvious advantages for projects with small construction sites.

(7) Standardization and modularization of components, simple accessories and strong applicability. The square steel has uniform specifications and is connected by shaped accessories, which is simple and reliable, and the installation speed is fast. It is not only suitable for shear wall construction, but also for frame column, beam and slab construction. Standardization and modularization regulate the construction of workers. While improving the construction quality, it ensures the cleanliness of the construction site and lays the foundation for civilized construction.

(8) Energy saving and environmental protection. Save wood, protect limited forest resources; save steel, protect non-renewable resources; save plastic, ensure project quality, and ensure public health; no need to cut square wood, no wood chips, reduce air pollution; save labor, improve work efficiency; square steel Recyclable, waste can be regenerated.

3. Scope of application

It is suitable for cast-in-place frames, frame-shear structural beams, shear walls, and column formwork projects in various housing construction projects.

4. Process principle

1. The square steel keel has high bearing capacity, high rigidity, and small deformation. It is easy to assemble and assemble with the wooden formwork. For the floor formwork, by setting the distance between the main and secondary flute square steel reasonably, the square steel keel combined with the wooden formwork The keel formwork system can better bear the structural weight and construction load of the upper part of the floor formwork; for the wall column side formwork, by setting the vertical square steel keel spacing reasonably, the square steel keel formwork system can better withstand the concrete pouring process of the wall column Lateral pressure during and after pouring.

2. The square steel keel formwork system uses one 40*40*2.5mm galvanized square steel as the secondary keel, two 40*40*2.5mm galvanized square steel as the main keel, and the lower adjustable jacking and support frame and so on form the combined support system of the roof formwork. After the vertical support rods are erected, use the adjustable jack to support the galvanized square steel main keel, install the secondary keel on the main keel, adjust the elevation with the adjustable jack, perform arching as required, and combine the primary and secondary keels Formwork is laid over the structure.

5. Construction technology and key points of operation

5.1 Construction conditions

(1) Materials and tools

Use 40*100mm wooden square, 40*40*2.5mm square steel, pull screw, etc.

The materials should be stacked in place, and should be scattered as much as possible to avoid excessive local concentrated load;

(2) The floor strength meets the construction design strength requirements;

(3) The laying-out work on the floor has been completed;

(4) The protection of the outer frame is in place to ensure that the safety protection height around the floor meets the construction requirements;

(5) According to the construction plan, the safety technology of the workers should be disclosed, so that the workers are familiar with the construction technology and the problems that should be paid attention to during the construction.

5.2 Fabrication of the hole

After the formwork is closed, install the main back flute and the secondary back flute, then assemble the hole, fix the hole lock to the main back flute with pull bolts, and reinforce it with a male corner lock on each side.

5.3 Technological process and operation points of beam and floor formwork engineering

1 process flow

Erection of steel pipe scaffolding → installation of adjustable jacking at the bottom of the slab → installation of beam bottom formwork, slab bottom formwork, and beam side formwork.

2 Operation points

Smaller cross-section beams (beam height H<600) and floor formwork and support systems.

steel pipe scaffolding erection

First determine the position of the poles according to the design plan of the beam-slab support system, then vertical steel pipe poles, the distance between the poles at the bottom of the slab is 1000-1200mm, the distance between the vertical poles at the bottom of the beam is 900mm, and the vertical distance of the vertical poles is 1000~1200mm, and then install the vertical and horizontal sweeping rods and horizontal connecting rods with a step distance of 1200~1500mm.

Adjustable top bracket on the bottom of the installation plate

The depth of the adjustable jacking bracket inserted into the pole is not less than 2/3 of the length of the adjustable jacking bracket. The width of the upper opening support plate of the adjustable jacking must be sufficient to place more than two rows of 45*45 square steel, so as to facilitate the placement of the square steel when the main flute is lapped, and the remaining width of the adjustable jacking can be tightened by slightly twisting the square steel .

Install beam bottom formwork, slab bottom formwork and beam side formwork

Installation of the secondary keel and main keel at the bottom of the slab: first adjust the elevation of the adjustable jacking, and set the camber according to the specification requirements, and then install the main keel of the square steel. The specification of the square steel is 40*40*2.5mm, and the length of the square steel is 2700mm, and then install the square steel sub keel, the specifications of the square steel are the same as the main keel square steel, and the distance between the sub keels is 250-400mm.

When the main keels are overlapped, the overlapping range of the two square steels is set at the two adjacent main keel supports (that is, at the two adjacent adjustable jackings); when the secondary keels are overlapped, the overlapping range of the two square steels The connection range is set on two adjacent secondary keel supports (and two adjacent main keels);

Bottom mold installation: lay the bottom mold on the sub-keel, use 15mm thick wood double-sided laminated multilayer board, set the bottom mold with square wood of the same size as the square steel of the sub-keel at an interval of 1500mm, and nail the bottom mold with the square steel of the sub-keel The patchwork square wood is firmly connected.

Determine the position of the bottom formwork of the beam according to the axis of the lower structure, and install the bottom formwork of the beam after correcting the elevation. When the beam height H<600, the bottom formwork of the beam adopts 15mm thick double-sided film-coated multi-layer board, and the bottom formwork of the beam is placed directly on the small horizontal bar. When the beam height is 600≤H≤800, the beam bottom longitudinal square timber and the beam bottom formwork shall be assembled first, and then the beam bottom formwork shall be installed.

Beam sealing side formwork: first assemble and connect the beam bottom side formwork with longitudinal square timber, then install the beam side formwork, and finally install step-by-step tightening, and then use step-by-step tightening to clamp the square timber at the outer lower end of the formwork on both sides of the beam , to fix the side molds on both sides of the beam. When the beam height is 600 ≤ H ≤ 800, it is also necessary to set the tension screw in the beam for reinforcement.

5.3 Technological process and operation points of wall stud formwork engineering

1 process flow

Positioning and setting out of the wall column → nailing the presser plate → installation of the wall column formwork.

2 Operation points

After 12 hours of concrete pouring on the lower beam slab, the positioning line of the wall column is released by springing the wire on the floor, and then the wall column presser plate is installed, and then the pre-assembled wooden formwork of the wall column is installed (the shear wall is set at an interval of 1500mm along the length of the wall to set spliced square timber) , the pillars are provided with a piece of square wood at both ends of each side, the square wood of the piece is 45*45mm), the square steel is 40*40*2.5 square steel@250mm, and the template is 15mm thick wood with double-sided coating multilayer board.

6. Quality control

6.1 Implementation Standards

"Building Construction Formwork Safety Technical Code" JGJ 162-2008

"Code for Construction Quality Acceptance of Concrete Structure Engineering" GB50204-2015

Engineering technology and quality assurance data are synchronized with the entity, timely, accurate, and complete, and meet the requirements of specifications and evaluation standards.

6.2 Quality Control

Requirements for formwork and its support system:

Ensure the accuracy of the shape and size of each part of the structure and components;

Must have sufficient strength, stiffness and stability;

The joints of the formwork should be tight and no slurry leakage should be allowed;

Easy to install and disassemble the formwork;

For cast-in-place reinforced concrete beams and slabs with a span of not less than 4 meters, the formwork should be arched according to the design requirements; when there is no specific requirement in the design, the arching height should be 1‰～3‰ of the span;

The contact surface between the formwork and the concrete is covered with release agent, and the wooden formwork is moistened with water before pouring the concrete, but there must be no water accumulation;

In order to improve work efficiency and ensure quality, the formwork should be numbered and positioned when it is reused, the mortar on the formwork should be cleaned, and the release agent should be applied so that the concrete will not drop corners, peel off, and have a smooth surface.

Carefully handle the formwork assembly at the junction of columns, beams, and slabs to ensure stability, firmness, and no slurry leakage.

The embedded parts and reserved holes fixed on the template must not be missed, the installation must be firm, the position must be accurate, and the allowable deviation should be controlled within the allowable value.

During the construction, the test block shall be prepared at the construction site, and it shall be cured under the same conditions as the structural concrete, and the specific form removal time shall be determined through the test;

During the construction of the upper beam slab, it should be ensured that the formwork and support of the lower layer are not removed.

7. Security measures

7.1 The wires erected on the formwork and the electric tools used should use a 36v low-voltage power supply or use a special electric box with a leakage protector.

7.2 When working at heights, various accessories should be placed in the tool box or tool bag and must not be dropped. Do not place on formwork or scaffolding.

7.3 Personnel working at heights are strictly prohibited from climbing up and down formwork or scaffolding, and are not allowed to walk on high-altitude wall tops, independent beams and their formwork.

7.4 The reserved holes and other places of the formwork should be covered with safety flat nets.

7.5 When assembling and dismantling the formwork, there should be someone from the top and bottom to take care of it, and it should be transported away as it is dismantled, and the moving parts should be fixed firmly.

7.6 When assembling and disassembling the formwork, stable climbing tools must be used, and scaffolding must be erected when the height exceeds 3.5m. During assembly and disassembly construction, no one is allowed to stand below except the operator. When working at heights, operators should wear safety belts.

7.7 When installing wall and column formwork, it should be supported and fixed at any time to prevent overturning.

7.8 The installation of the pre-assembled formwork should be in place, corrected, installed with connectors, and added temporary support for stability.

7.9 When the pre-assembled formwork is lifted vertically, more than two lifting points should be adopted, and four lifting points should be set for horizontal lifting.

7.10 When removing the load-bearing formwork, temporary supports should be set up first to prevent sudden overall collapse.

8. Environmental protection measures

8.1 Do a good job of environmental protection education for employees before entering the site, so as to improve their awareness of environmental protection.

8.2 Strengthen mechanical management, improve construction technology, and reduce noise during construction. Noise control complies with the national standard "Noise Limits at Construction Site Boundary".

8.3 Disposal of waste and obsolete templates: set up recycling sites on site according to the degree of damage and size of templates, realize classified management, and make signs. There is no random pile of garbage on the construction site. Abandoned formwork is regularly cleaned up by waste 1-day wood recycling units. Large formwork with light damage or rotten edges will be cut off by 150mm on each side for reuse or sporadic small components of secondary structures.

The square steel keel formwork system is all made of high-quality steel, with a minimum thickness of 2.5mm, so it can be used repeatedly for 300 times, while the traditional square wood keel method in building construction consumes hundreds of millions of cubic meters of wood every year, so compared with the traditional square wood support Save 70% of the cost. The purchase cost of large steel formwork is high, the cost of secondary restructuring is extremely high, and the construction progress is slow. Compared with large steel formwork, it can save 50% of the cost. Save wood, protect forest resources, and leave a piece of green for Yu Sun.

9. Economic benefit analysis

My project tracked and investigated the square steel keel formwork system, and made statistical summary of the feedback information.

The unit of 10,000㎡ is calculated, and the savings of direct and indirect costs are shown in the table below:

In this paper, specific examples are used to illustrate the principle and implementation of the present invention, and the descriptions of the above embodiments are only used to help understand the method and core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, some improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims (10)

1. A stereotyped formwork positive angle reinforcement system, comprising a formwork (520), a main back flute (100) and a secondary back flute (510), and the secondary back flute (510) is supported on the outside of the formwork (520) , the main back flute (100) is braced on the outside of the secondary back flute (510), and it is characterized in that it also includes a male corner lock, and the male corner lock includes a retaining back flute (200) and a blocking piece (400 ); The retainer back flute (200) is provided with a retainer back flute connector along the direction of its main axis; The baffle (400) includes a friction plate (410) and a support plate (440), the support plate (440) is fixed on the edge of the opposite side of the friction plate (410), and the support plate (440) and The friction plate (410) is vertical; The retainer back flute (200) is vertically supported on the outside of the secondary back flute (510), and the retainer back flute (200) is vertically supported on the main back flute (100) and passes through the retainer back flute (510). The support back flute connector is fixed on the main back flute (100), the baffle (400) is fixed on the main back flute (100) through the baffle connector, and the support plate (440) It abuts against the back flute (200) of the retainer. 2. A stereotyped formwork external corner reinforcement system according to claim 1, characterized in that: the retainer connector includes a main back corrugated card (420), and the main back corrugated card (420) is fixed on the The front side of the friction plate (410), the main back flute card (420) is engaged with the main back flute (100). 3. A stereotyped formwork external corner reinforcement system according to claim 1, characterized in that: the middle part of the friction plate (410) of the retainer (400) is provided with a first bolt hole (411), and the retainer The sheet connector includes first bolts, and first through holes corresponding to the first bolt holes (411) are provided on the main back flute (100). 4. A stereotyped formwork external corner reinforcement system according to claim 1, characterized in that: the end of the retainer back corrugated (200) is provided with claws (220). 5. A stereotyped formwork external corner reinforcement system according to claim 1, characterized in that: the back brace (200) includes two brace braces (210) and brace brace connectors (230) , the two barrier struts (210) pass through the barrier strut connector (230), the two barrier struts (210) are arranged in parallel with a gap between the two barrier struts (210) , the retainer back corrugated connectors are hook bolts (310). 6. A stereotyped formwork external corner reinforcement system according to claim 1, characterized in that: the baffle (400) also includes a top plate (430), and the top plate (430) is fixed on the friction plate ( 410), and located on the opposite side of the support plate (440). 7. A stereotyped formwork external corner reinforcement system according to claim 1, characterized in that: said retainer (400) also includes a retainer back corrugated card (441), said retainer back corrugated card (441 ) is fixed on the side of the support plate (440) in contact with the back flute (200). 8. A stereotyped formwork external corner reinforcement system according to claim 1, characterized in that: the main back flute (100) is a double back flute structure, and the main back flute (100) includes two main rods (110) and the main rod connector (120), the two main rods (110) are connected through the main rod connector (120), the two main rods (110) are arranged in parallel and the two main rods There are gaps between the rods (110). 9. A stereotyped formwork external corner reinforcement system according to claim 1, characterized in that: the two main rods (110) of the main back corrugated (100) are provided with dislocated expansion joint structures . 10. A stereotyped formwork external angle reinforcement system according to claim 8, characterized in that: the telescopic joint structure includes a sleeve rod (111) and a telescopic rod (112), and two of the sleeve rods (111) respectively sleeved on the two ends of the telescopic rod (112).