Device for supporting angle formwork during secondary concrete pouring at intersection of precast beams and slabs and method of device

Abstract

The invention belongs to the technical field of formwork supporting in concrete engineering, and discloses a device for supporting an angle formwork during secondary concrete pouring at the intersection of precast beams and slabs and a method of the device. Angle steel connecting plates are connected with two pieces of angle steel through bolts correspondingly, and angle steel reserved holes are formed in the two pieces of angle steel correspondingly. L-shaped steel plates are fixed to the right ends of the two pieces of angle steel through bolts, and the L-shaped steel plates are fixed to thesides of a prefabricated reinforced concrete beam through expansion bolts. An inclined strut support is arranged on the angle steel connecting plates, and a support adjusting device is arranged at the left end of the inclined strut support; and the inclined strut support is connected with a diagonal brace system through a hinge connection hole, and the diagonal brace system is connected with a steel formwork system through a hinge connection hole. By arranging the support adjusting device and the diagonal brace system, the attaching degree of a steel formwork and the surfaces of the beam andthe slab can be adjusted; and under the action of an inclined strut, the angle formwork bears vertical jacking force and horizontal thrust, so that the steel formwork is tightly attached to the surfaces of the beam and the slab, seamless butt joint is achieved, the sealing performance is high, and meanwhile the slurry leakage phenomenon is eradicated completely.

Description

technical field [0001] The invention belongs to the technical field of formwork support in concrete engineering, and in particular relates to a device and method for corner formwork support during secondary concrete pouring at the intersection of prefabricated beams and slabs. Background technique [0002] At present, the beams, slabs, columns and exterior walls of prefabricated buildings are all prefabricated in factories, and after passing the maintenance, they are transported to the site for assembly, which is more convenient and faster than traditional cast-in-place construction, especially with less impact on the environment. With the increasing attention of the industry and the strong support of the government, it has ushered in an opportunity for development. During construction, the prefabricated beams are installed first and then the prefabricated slabs are installed. The bars are inserted into the beams, and the prefabricated slabs are used as templates for the sec...

AI Technical Summary

Problems solved by technology

In addition, it is necessary to add vertical horizontal rods, horizontal horizontal rods and wooden supports. The number of turnovers of wooden support components is small, and the operating space is limited when constructing the above support system, and the transportation of materials is inconvenient, so that the labor cost is also soaring. It is unacceptable and urgently needs research and development. New technology and new method to solve the shortage of traditional technology

[0003] Through the above analysis, it can be seen that the traditional process has complex construction, less material turnover, high cost, lax joints, grout leakage and mold runout.

[0004] The difficulty in solving the above problems and defects is: to cure the current technological defects, not only is the construction difficult, the cost is high, and the quality is difficult to guarantee. The reason is that the corner formwork system bears both vertical force and lateral thrust during the secondary concrete pouring of prefabricated beams and slabs. , so it is necessary to add vertical poles and horizontal poles at the same time to tighten the formwork system against the prefabricated slab vertically and against the prefabricated beam side horizontally, and the angle formwork is close to the beam and the slab

Since the process of installing the vertical rods and cross rods added by the corner formwork is after the construction of the prefabricated beam and slab support system, the construction space is limited, resulting in low work efficiency; For the shelving of the corner formwork, it is necessary to add a horizontal bar near the bottom of the floor, which increases the amount of support for the prefabricated slab; thirdly, in the process of manufacturing and installing the prefabricated beam slab, it is inevitable that there will be inaccurate dimensions and uneven surfaces. The corner formwork made of square wood cannot change with the shape of the structure, so it is difficult to make the square wood and the wall of the prefabricated beam and slab close to each other even if the uprights and cross bars are added, which makes it difficult to guarantee the quality

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