CN112412005A

CN112412005A - An adjustable formwork system for construction of small-sized deformation joints

Info

Publication number: CN112412005A
Application number: CN202011402046.8A
Authority: CN
Inventors: 马龙; 蒋怡; 陆启宏; 杨艳; 蔡金新; 范凌云
Original assignee: China Construction Fourth Bureau Fifth Construction Engineering Co Ltd
Current assignee: China Construction Fourth Bureau Fifth Construction Engineering Co Ltd
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-02-26

Abstract

The invention discloses an adjustable formwork system for the construction of small-sized deformation joints. A screw rod is provided with a forward-rotating thread section and a reverse-rotating screw section at intervals along the axial direction, a connecting sleeve is fixed with the upper and lower adjacent screw rods, and a handle is arranged on the top of the screw rod at the top. , the nut is respectively set on the forward thread section and the reverse thread section of the same screw and has corresponding threaded holes in it, the steel template is arranged on both sides of the screw in parallel, and the lugs are fixed on the steel template at intervals along the axial direction of the screw. The nut is hinged with one end of the two pull plates on both sides of the corresponding steel formwork respectively, and the other ends of the two pull plates hinged with the wire on the adjacent forward or reverse rotation thread segments of the screw are hinged with the lugs respectively. In the present invention, positive and negative spiral thread segments are arranged on the screw rod, so that the nut, the lug plate and the pull plate form a scissor structure that can be opened and closed, so that the spacing of the steel formwork can be adjusted conveniently, so as to solve the problem of formwork installation and difficulty in the construction of small-sized deformation joints. The problem of dismantling is difficult, and it has the characteristics of convenient disassembly and assembly, flexible adjustment, high support strength and reusability.

Description

Adjustable template system of small-size movement joint construction

Technical Field

The invention belongs to the technical field of construction machinery, and particularly relates to an adjustable template system for small-size deformation joint construction, which is convenient to disassemble and assemble, flexible to adjust, high in supporting strength and capable of being repeatedly used.

Background

In industrial and civil buildings, additional stress and deformation are generated inside the building structure due to the influence of factors such as temperature change, uneven settlement of a foundation, earthquake and the like, particularly the additional stress and deformation are amplified by small high-rise buildings and high-rise buildings, and the building structure cracks and even collapses if the additional stress and deformation is not properly treated. Therefore, the structure needs to be broken at sensitive positions where deformation is possible to generate in advance to form deformation joints, so that the building structures of all parts have enough deformation width in the deformation joints without damage, for example, deformation joints are arranged between shear wall structures in small and high-rise buildings. However, it can be known from the effect of the deformation joint that the deformation joint is generally narrow, and when the height of a frame-shear wall structure house does not exceed 15m and the width is not less than 100mm when a quakeproof joint is arranged as specified in the technical code of high-rise building concrete structures (JGJ 3-2010). Therefore, the width of the deformation joint of a building with small height is generally only 100-200 mm, the width of the deformation joint of a high-rise building and a small-rise building is generally only 200-500 mm, and the clearance distance of the deformation joint is small, so that the installation and the removal of the templates on two sides of the deformation joint are difficult, and particularly the small-size deformation joint of 100-200 mm is more difficult.

For the template construction of small-size deformation joints, the following three processes are often adopted in the prior art: the first is to adopt the polyphenyl board as the disposable template, but because the polyphenyl board intensity is lower, the expansion die and the explosion die are easy to appear on the inner side of the expansion joint after the concrete pouring and tamping are finished, the structural dimension and the verticality of the concrete section can not be ensured, and the rework and rectification cost is higher. The second is that the box that adopts wood veneer plus flitch to make and big such as movement joint is as the template, perhaps supports as the template with slabby strip piece preparation grid, nevertheless owing to receive the extrusion of both sides construction load, demolish comparatively difficultly after the later stage destroys, and does not tear open then because the rigid structure can direct influence the structure function of movement joint. And thirdly, a staggered-layer construction method is adopted on two sides of the deformation joint, but the deformation joint cannot be poured simultaneously, the construction period is longer, and the difficulty of safety protection and dynamic management of an upper operation layer and a lower operation layer is increased. Therefore, in the prior art, a deformation joint template is provided with a hole, a wall penetrating screw penetrating through a pre-embedded sleeve in a wall body is arranged in a penetrating mode, and the template on the outer side is fixed by pulling from the inner side of a wall column, so that the defects that wall columns on two sides of a small-size deformation joint cannot be poured simultaneously, or a polystyrene board needs to be filled between deformation joints, a wood box needs to be arranged, and the like are overcome. However, it should be seen that the above method requires pre-embedding of the sleeve in the wall column structure, which not only reduces the structural strength of the wall column and reduces the waterproof performance, but also tightens the wall-penetrating screws one by one, and the difference in the tension or the screwing amount of each screw reduces the flatness of the formwork, so that the structural dimension and the verticality of the concrete section cannot be accurately ensured, and the deformation joint needs to be re-manufactured after the dimension adjustment. In addition, the high-pressure air bags are used for inflating to support the formworks on two sides, and the formworks are convenient to move out through deflation and pressure reduction during dismantling, so that the adverse effect of construction residual garbage in deformation joints is solved although the formworks can be repeatedly used, but the problems that the formwork expansion and the formwork explosion are easy to occur after concrete pouring and tamping are difficult to avoid due to the fact that the supporting strength of the air bags after inflation is still limited. In addition, an oval steel pipe is adopted as a component, the support rod piece in the rotary top form removal device at the tail end of the oval steel pipe is opened and closed to adjust the space between the formworks, the purposes of efficient assembly and disassembly and recycling are achieved, however, the single support rod piece is easy to be unstable under strong construction load, the stress is too large and potential safety hazards exist only when the size is stabilized through the threaded connection of the upper small section, corresponding oval steel pipes are required to be manufactured for deformation joints with different sizes, the universal type is lacked, material waste is caused, and the use cost is high.

Disclosure of Invention

The invention aims to provide an adjustable template system for small-size deformation joint construction, which is convenient to disassemble and assemble, flexible to adjust, high in supporting strength and reusable.

The purpose of the invention is realized as follows: including handle, screw rod, adapter sleeve, screw nut, otic placode, arm-tie, steel form, be provided with positive thread section and derotation screw thread section along axial interval on the screw rod, adapter sleeve and upper and lower adjacent screw rod fixed connection, the handle sets up in the screw rod top on top, the screw nut sets up respectively in the positive thread section and the derotation screw thread section of same screw rod and be equipped with corresponding screw hole in, the steel form parallel arrangement respectively is in the both sides of screw rod, the otic placode sets up on the steel form along screw rod axial interval is fixed, the screw nut is articulated with the one end of two arm-ties respectively in the both sides that correspond the steel form, the other end of two arm-ties articulated with the screw nut on the adjacent positive thread section of screw rod and derotation screw thread section is articulated with the otic placode respectively.

The invention has the beneficial effects that:

1. the screw rod is provided with the forward and reverse rotating thread sections, so that the screw nut, the lug plate and the pull plate form a foldable shear type structure, after the assembly is completed on a construction site, the screw rod is lifted to the position of a construction joint by a tower crane in an auxiliary way, then the screw rod is rotated by a handle, the distance between the steel templates on two sides can be conveniently and flexibly adjusted to a proper size according to the size of a deformation joint, and the synchronous support of the templates on two sides of the deformation joint is completed, so that the preparation and the template support time is short, the synchronous concrete pouring can be realized, the difficulty of the vertical safety protection and the dynamic management of an operation layer caused by staggered construction is avoided, the consistency of the distance adjustment of the steel templates is also ensured, and the structural size and the verticality of a concrete section after pouring can be ensured by the thread self-locking function of the thread sections of the screw rod and the screw nut, the distance between the steel templates can be reduced by adjustment, the adverse effect of construction residual garbage in the deformation joint on the structure function is avoided, and the difficult problem that no operation space exists in the installation and the removal of the template in the construction of the small-size deformation joint can be effectively solved.

2. The steel templates on two sides form rigid support through the shear type structure of the upper pulling plate and the lower pulling plate, the construction load can be converted into friction between threads and shearing on the screw rod through the multi-section threaded connection on the screw rod after adjustment, and the symmetrical shearing force and the self shearing strength of the screw rod can effectively improve the support rigidity, the strength and the stability of the steel templates, so that the probability of mold expansion and mold explosion can be reduced, the accuracy of the structural size of wall columns on two sides of a deformation joint can be ensured, and the overall safety and the reliability can be improved.

3. The adjustable range of the steel template interval is large, the installation and the removal can be conveniently realized by adjusting and reducing the steel template interval, so that the problem that the template is easy to damage in the removal process of the traditional method is solved, one set of device can adapt to deformation joints with different sizes, the universality is strong, repeatable repeated use is realized, the one-time investment of materials can be obviously reduced, and the use cost is effectively reduced.

4. The invention can assemble a plurality of screw rods, the components connected with the screw rods and the steel templates on site to form a required rigid whole through the connecting sleeves according to the specific floor height requirement of a project, and can keep synchronous adjustment and integral installation and removal, thereby ensuring flexible and convenient use, enlarging the application range and meeting the construction of small-size deformation joints of different projects.

In conclusion, the invention has the characteristics of convenient disassembly and assembly, flexible adjustment, wide application range, high support strength and reusability.

Drawings

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

FIG. 2 is one of the top views of FIG. 1 (the individual units);

FIG. 3 is a second (double) top view of FIG. 1;

FIG. 4 is a second schematic view (maximum adjustment distance) of the present invention;

FIG. 5 is a second schematic view (minimum adjustment distance) of the present invention;

FIG. 6 is a view of the radical template taken from the top A-A of FIG. 4;

FIG. 7 is a view of the template taken from the middle section A-A of FIG. 4;

FIG. 8 is a view of the end template taken from the bottom of section A-A of FIG. 4;

in the figure: the structure comprises a handle 1, a screw rod 2-1-a forward-rotation thread section, a screw rod 2-a reverse-rotation thread section, a connecting sleeve 3, a screw nut 4, an ear plate 5, a pull plate 6, a reinforcing rod 7, a hollow ear plate 8, a screw rod hole 9, a screw rod 10, a bolt 11, a locknut 12, a steel template 13, a connecting plate 14 and a backing plate 15.

Detailed Description

The invention is further illustrated by the following figures and examples, which are not intended to limit the invention in any way, and any variations or modifications which are based on the teachings of the invention are intended to be within the scope of the invention.

As shown in fig. 1, 2 and 3, the invention comprises a handle 1, a screw rod 2, a connecting sleeve 3, a screw nut 4, an ear plate 5, a pulling plate 6 and a steel template 13, wherein the screw rod 2 is provided with a forward-rotation thread section 2-1 and a backward-rotation thread section 2-2 at intervals along the axial direction, the connecting sleeve 3 is fixedly connected with the screw rods 2 adjacent to each other up and down, the handle 1 is arranged at the top of the screw rod 2 at the top end, the screw nut 4 is respectively arranged on the forward-rotation thread section 2-1 and the backward-rotation thread section 2-2 of the same screw rod 2 and is internally provided with corresponding threaded holes, the steel templates 13 are respectively arranged at two sides of the screw rod 2 in parallel, the ear plate 5 is fixedly arranged on the steel template 13 at intervals along the axial direction of the screw rod 2, the screw nut 4 is respectively hinged with one end of the two pulling plates 6 at two sides corresponding to the steel template 13, and the other ends of the two pulling plates 6 hinged with the forward-rotation thread The ear plate 5 is hinged.

Two screw rods 2, and a nut 4, an ear plate 5 and a pulling plate 6 which are matched with each other are arranged between the steel templates 13 at least horizontally at intervals.

The lower part of the handle 1 penetrates into or is sleeved at the top of the screw rod 2 at the top end, and the lower part of the handle 1 is fixedly connected with the top of the screw rod 2 at the top end through a pin or a bolt 11. Realize fixed connection through pin or bolt 11, be convenient for handle 1 and screw rod 2 quick installation when needs adjustment, and dismantle in order to prevent the maloperation fast after the adjustment is ended.

The top of the screw rod 2 at the top end and the lower part of the handle 1 are correspondingly provided with a male head and a female head which can be mutually matched, pulled out and inserted to be separated. The function is the same as for the fixed connection of the pin or bolt 11.

And a locknut 12 is arranged on the thread section above the nut 4 on the upper part of the screw 2 at the top end. The handle 1 can be detached after the distance between the steel templates is adjusted properly, and the locknut is tightly propped against the upper screw nut by adopting a special socket wrench or a special wrench so as to prevent the screw nut from loosening due to vibration during concrete pouring and influencing the supporting effect of a deformation joint.

The connecting section of the screw rod 2 and the connecting sleeve 3 is of a rectangular or hexagonal structure, the connecting sleeve 3 is correspondingly provided with a connecting hole or an outer edge of the rectangular or hexagonal structure, and the screw rod 2 and the connecting sleeve 3 are correspondingly provided with a connecting pin or a bolt 11 in a penetrating manner.

As shown in fig. 4 to 8, the steel molding plate 13 is respectively and vertically fixed with hollow ear plate plates 8 along two axial sides of the screw 2, and the reinforcing rod 7 penetrates between the hollow ear plate plates 8. The left and right adjacent steel templates 13 are connected by a reinforcing rod 7 passing through the adjacent hollow otic placode 8.

The steel form 13 is provided with the counter-pulling screw rod hole 9 at the interval of one side of keeping away from hollow otic placode 8, be provided with on the steel form 13 and pass the counter-pulling screw rod 10 to the counter-pulling screw rod hole 9.

To drawing screw rod hole 9 and setting up in steel form 13 along 2 axial otic placodes 5 sides of screw rod, to drawing screw rod 10 and being equipped with the lantern ring at 2 one side ends of screw rod of steel form 13, the external diameter of the lantern ring is not more than to drawing screw rod hole 9's diameter, wears to be equipped with the dead lever on the lantern ring to drawing screw rod 10 on the adjacent steel form 13 from top to bottom. Penetrate the lantern ring to drawing the screw rod on the adjacent steel form downwards through the dead lever, can screw up the intensity to drawing the screw rod in order to strengthen the steel form at opposite side template, also avoided the tradition simultaneously to drawing the screw rod and need the inconvenience of movement joint internal fixation when screwing up, just can upwards take out the dead lever as long as loosen the screw rod to drawing when form removal moreover, then just can follow opposite side template and take out to drawing the screw rod for it is also more convenient to form removal.

The steel template 13 is provided with a sleeve on the opposite-pulling screw rod 10 at one side far away from the screw rod 2, and the outer diameter of the sleeve ring is smaller than the inner diameter of the sleeve.

The steel form 13 is fixedly provided with a connecting plate 14 along at least one axial end of the screw rod 2, the connecting plate 14 is L-shaped, one side of the connecting plate is fixedly connected with the steel form 13, the other side of the connecting plate is provided with a connecting hole, and the steel form 13 which is adjacent up and down is fixedly connected through a bolt 11 which penetrates through the connecting hole of the adjacent connecting plate 14.

The bottom of the steel form 13 at the top sets up connecting plate 14, and the upper and lower both ends of the steel form 13 at the middle part set up connecting plate 14 respectively, and the top of the steel form 13 at the bottom sets up connecting plate 14.

The steel moulding plate 13 is fixedly provided with a backing plate 15 between the ear plates 5.

The working process of the invention is as follows:

as shown in fig. 1 to 8, before installation, the overall height of the steel form 13 is designed according to site construction drawings, or the height of the unitized steel form 13 is divided according to the drawings, then the specific positions of the lug plate 5, the hollow lug plate 8, the connecting plate 14 and the split screw rod hole 10 on the steel form 13 are determined, finally the processing drawings of each component are determined, unified processing is performed in a factory, the lug plate 5, the hollow lug plate 8 and the connecting plate 14 are respectively welded or connected to the corresponding positions of the steel form 13 by bolts, if necessary, the screw nut 4 can be sleeved on the corresponding thread section of the screw rod 2 in advance, the split plate 6 is connected to the screw nut 4, and the screw nut is transported to the site for assembly after all the screw nuts are qualified. Taking the height of 1000mm long and layer height +100mm as a unit, and transporting to a field for assembly after processing in a factory; or taking the length of 1000mm and the height of 600mm as a standard unit, processing in a factory, and then transporting to the site to assemble according to the requirement of the layer height on the site. During assembly, the screw rods 2 and the auxiliary components are assembled, the pulling plates 6 on the screw nuts 4 are hinged to the lug plates 5 on the steel templates 13, the screw rods 2 and the auxiliary components are connected with the steel templates 13 on two sides to form an integral unit, the screw rods 2 of all the units are connected through the connecting sleeves 3, the handles 1 are fixedly connected with the screw rods 2 at the top ends, the steel templates 13 are spaced at the maximum position by rotating the handles, reinforcing rods 7 penetrate into the hollow lug plates 8 of the left and right adjacent steel templates 13, and the connecting plates 14 of the upper and lower adjacent steel templates 13 are fixedly connected through bolts 11. After the installation is accomplished, adjust the minimum position through handle 1 with steel form 13's interval, utilize the supplementary hoist and mount of tower crane to relevant position, adjust steel form 13's interval to the width that needs through handle 1, use after waiting the width modulation to consolidate with the template fastening connection in the outside to pull screw rod 10, accomplish the integral erection promptly. When the formwork is dismantled, the split screw rods 10 are dismantled, the distance between the steel formworks 13 is reduced by the handles 2, the system is lifted to the next layer by the tower crane, and the formwork units are added or redundant formwork units are dismantled reversely according to the process if necessary, so that the formwork requirement of the next deformation joint can be met through rapid adjustment.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An adjustable formwork system for small-sized deformation joint construction, characterized in that it comprises a handle (1), a screw (2), a connecting sleeve (3), a silk nut (4), a lug plate (5), a pull plate (6) ), a steel template (13), the screw (2) is provided with a forward thread segment (2-1) and a reverse thread segment (2-2) at intervals along the axial direction, and the connecting sleeve (3) is connected to the upper and lower threads. Adjacent screw rods (2) are fixedly connected, the handle (1) is arranged on the top of the screw rod (2) at the top, and the nut (4) is respectively arranged on the positive screw thread segment (2-1) of the same screw rod (2). ) and the counter-rotating thread segment (2-2) and inside are provided with corresponding threaded holes, the steel template (13) is arranged in parallel on both sides of the screw (2), and the lugs (5) are arranged along the screw (2-2). 2) Axially spaced and fixed on the steel template (13), the nut (4) is hinged with one end of the two pull plates (6) on both sides of the corresponding steel template (13), and the screw (2) ) The other ends of the two pull plates (6) hinged with the nut (4) on the adjacent positive thread segment (2-1) and reverse thread segment (2-2) are hinged with the lug plate (5) respectively .

2. The adjustable formwork system for construction of small-sized deformation joints according to claim 1, characterized in that at least two screws (2) and nut (4) matched with each other are provided at least horizontally between the steel formwork (13). ), lug plate (5) and pull plate (6).

3. The adjustable formwork system for small-sized deformation joint construction according to claim 2, characterized in that the lower part of the handle (1) penetrates or is sleeved on the top of the screw (2) at the top, and the handle (1) is The lower part and the top of the screw rod (2) are fixedly connected by pins or bolts (11).

4. The adjustable formwork system for the construction of small-sized deformation joints according to claim 2, characterized in that the top of the screw (2) at the top and the lower part of the handle (1) are respectively provided with male connectors that can cooperate with each other and can be pulled out and separated. female head.

5. The adjustable formwork system for small-sized deformation joint construction according to claim 2, characterized in that a locking nut (12) is provided on the thread section above the nut (4) on the upper part of the screw (2) at the top end.

6. The adjustable formwork system for small-sized deformation joint construction according to claim 2, characterized in that the connecting section between the screw (2) and the connecting sleeve (3) is a rectangular or hexagonal structure, and the connecting sleeve (3) ) correspondingly provided with a connecting hole or outer edge of a rectangular or hexagonal structure, and a connecting pin or bolt (11) is correspondingly pierced on the screw (2) and the connecting sleeve (3).

7. The adjustable formwork system for small-sized deformation joint construction according to any one of claims 2 to 6, characterized in that two sides of the steel formwork (13) along the axial direction of the screw (2) are respectively provided with hollow hollows corresponding to vertical fixing. The lug plate (8) is provided with a reinforcing rod (7) between the hollow lug plates (8).

8. The adjustable formwork system for small-sized deformation joint construction according to claim 7, characterized in that the steel formwork (13) is provided with a pair of pull screw holes (9) at intervals on the side away from the hollow lug plate (8). , the steel template (13) is provided with a pair of pulling screws (10) passing through the holes (9) of the pulling screws.

9. The adjustable formwork system for small-sized deformation joint construction according to claim 8, characterized in that the pair of pulling screw holes (9) are arranged on the lugs (5) of the steel formwork (13) along the axial direction of the screw (2). On the side, the pair of pull screws (10) is provided with a collar on one side end of the screw (2) of the steel template (13). A fixing rod is pierced through the collar of the pull screw (10) on the adjacent steel formwork (13).

10. The adjustable formwork system for small-sized deformation joint construction according to claim 7, characterized in that at least one end of the steel formwork (13) along the axial direction of the screw (2) is fixedly provided with a connecting plate (14), and the connecting The plate (14) is in the shape of "L", and one side is fixedly connected with the steel formwork (13), and the other side is provided with connecting holes, and the upper and lower adjacent steel formwork (13) are connected by passing through the adjacent connecting plates (14). The bolts (11) of the holes are fixedly connected.