Pouring device for long-span prestressed concrete shell with cylindrical inner wall

Abstract

The invention discloses a large-span prestressed concrete shell plate with a cylindrical inner wall and a casting device thereof. This kind of concrete shell plate has an arc-shaped flange plate, and a main rib is arranged at the center of the outer peripheral surface of the flange plate, and the main rib is arranged along the length direction of the flange plate, and the thickness of the end of the flange plate h2≥the center of the flange plate Thickness h1. This pouring device has a drum and a feeding device. The inner wall of the drum is provided with a groove and a separating steel plate. The separating steel plate is located in the middle of the two grooves. The ribbed bottom formwork is built in the groove; The device includes a screw conveying shaft, which is arranged at the bottom of the drum, and a driven shaft is located above the screw conveying shaft; the outer wall of the drum is provided with a driving device for driving the drum to rotate. The poured concrete shell plate of the invention has the advantages of reasonable stress, simple structure, convenient manufacture, strong durability and good economy. The pouring device of the invention has a high degree of mechanization, and the production efficiency is more than 10 times that of conventional production.

Description

technical field [0001] The invention relates to the technical field of concrete shell slabs and pouring, in particular to a pouring device for large-span prestressed concrete shell slabs whose inner walls are cylindrical. Background technique [0002] Traditional long-span concrete roofs generally use prefabricated prestressed concrete roof slabs with good economy, especially prefabricated double T slabs, prefabricated saddle slabs, and prefabricated goose-shaped slabs that combine slabs and beams. What they have in common is that ① using prefabricated components, factory production, assembly construction, easy quality control, fast construction speed, energy saving and water saving, in line with the national prefabricated building policy orientation. ② High-strength concrete and high-strength steel bars are used to save materials. ③ Plate and girder are integrated, easy to manufacture, less components, fast transportation and hoisting, good longitudinal rigidity, and large...

AI Technical Summary

Problems solved by technology

However, if the suspension roller method uses a large-span cylindrical shell plate, the calculation shows that when the span is greater than 12m, the diameter of the roller shaft is already very large, and its bending deformation will cause uneven thickness of the inner wall of the concrete, which cannot meet the precision requirements of the component

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