Cast-in-situ clear-water concrete viewing platform moulding board and its construction method

Abstract

The invention relates to a cast-in-site watery concrete stand template and its constructing method, where the seat platform and seat-back stile are encircled with seat platform bed template panel, seat back stile's up-front vertical surface hanger template, seat back stile's down-front vertical template panel, rear vertical template panel and seat back stile's bed template panel, and the position of the ventilating hole is pre-buried with PVC pipe; the external angle position is equipped with an circular-arch chamfered external angle die strip plate; a triangular strip is cut off outside the bottom end of the seat back stile's up-front vertical surface hanger template in the internal angle position; horizontal secondary keel and vertical primary keel are used to support the back of each template panel; the primary keel is supported on support beam, the support beam is arranged on the support beam body; the primary keel of the hanger template hangs and is supported by temporary vertical support, and wall-passing bolt runs in order through the primary keel of the hanger template, seat back stile's up-front vertical surface hanger template, ventilating hole, rear vertical template panel and the primary keel of the rear vertical template panel and is fastened. And the invention advances constructing schedule, assures construction quality and besides, reduces engineering cost.

Description

(1) Technical field [0001] The invention relates to a concrete stand template and a construction method for the concrete stand in a stadium. (2) Background technology [0002] In the construction of grandstand slabs of large stadiums, there is no one-time cast-in-place concrete stand slab, and the construction methods of traditional concrete stands are mostly precast concrete construction methods or plastering secondary molding construction methods after pouring concrete in place. Among them, the prefabricated concrete stand is expensive, difficult to hoist and construction, and poor in integrity. The method of plastering and forming the stand after pouring in-situ concrete adds a plastering layer, which not only delays the construction period, but also increases the dead load of the structure, and is prone to common quality problems such as hollowing and cracking in the plastering project. The construction method of the cast-in-place concrete stand has the following disadv...

AI Technical Summary

Problems solved by technology

Among them, the cost of prefabricated concrete stands is high, the hoisting construction is difficult, and the integrity is poor

The practice of plastering and forming stands after pouring concrete adds a plastering layer, which not only delays the construction period, but also increases the dead load of the structure, and is prone to common quality problems such as hollowing and cracking in plastering projects

The construction method of the cast-in-place concrete stand has the following disadvantages: ①. The inner corner of the stand step is a right angle, which is easy to be damaged during construction and use, and it is difficult to repair. The color difference between the polished part of the concrete and the concrete of other parts is too large, and the concrete effect cannot be achieved. , the upper part of the triangular chamfer and the concrete surface are slightly misaligned, and the quality of the platform is poor, and the upper and lower openings of the chamfer are not easy to straighten

②. At the plane of the inner corner of the stand, that is, within the projection range of the vertical mold, it is impossible to rub the surface, resulting in rough surface

③. It is difficult to strengthen the vertical formwork panel of the stand, and it is easy to have honeycomb, pockmarks, bubbles, etc.

④. It is difficult to adjust the verticality of the vertical formwork of the stand, and it is easy to cause mold expansion, and the horse stool for the vertical formwork with large gaps is easy to appear tendons and other phenomena.

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