Bidirectional pre-tensioning-method prestressing complete device and production method using the same

Abstract

The invention relates to a bidirectional pre-tensioning-method prestressing complete device and a production method using the same. The bidirectional pre-tensioning-method prestressing complete devicecomprises a steel frame, a horizontal workbench arranged on the steel frame, and vertical tension plates welded to all sides of the steel frame; and open slots are formed in the left tension plate and the rear tension plate. In addition, the complete device includes a frame die; and two horizontal and longitudinal stretching mechanisms are arranged at the inner sides of the tension plates outsidethe frame die. Because of the steel frame, the prestressing requirement is met by the strength of the steel frame structure, so that a problem that the traditional concrete platform can only bear thepressure in a single direction but can not bear the pressure of the other vertical direction is solved. Meanwhile, a phenomenon that the traditional concrete platform is limited by the geomorphic feature of the construction site is avoided; and building of a large underground concrete pier is avoided. During the recovery process of the bidirectional steel strands or steel bars, the solidified concrete is compressed and thus the crack-resistant, bending stiffness, compressive strength and anti-seismic performances of the laminated beams or laminated plates are excellent. The bidirectional pre-tensioning-method prestressing complete device is suitable for the high load field.

Description

technical field [0001] The invention relates to the technical field of laminated slab or laminated beam production, in particular to a movable bidirectional pretensioning prestressing complete set for producing laminated beam or laminated slab and using the complete set of device to produce laminated beam or laminated slab Methods. Background technique [0002] With the progress of society, the infrastructure industry is developing rapidly. The energy-saving laminated beams and laminated panels of green buildings are the key components of prefabricated green energy-saving buildings. They are the key prefabricated components formed by the industrialization of buildings and the development of green manufacturing technology. , industrial, commercial and residential construction fields. At present, the prefabricated component factory produces prefabricated composite beams and prefabricated composite panels in the factory area. The current infrastructure location is far away fro...

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Problems solved by technology

At present, the prefabricated component factory produces prefabricated composite beams and prefabricated composite panels in the factory area. The current infrastructure location is far away from the urban area. The prefabricated composite beams and prefabricated composite panels produced by the prefabricated component factory need long-distance transportation, so the production cost is relatively high. , when the prefabricated composite beams and prefabricated composite slabs are large, it is difficult to transport, so it is necessary to build a workbench for the production of prefabricated composite beams and prefabricated composite slabs near the construction site. The spaced concrete piers are poured under the ground, and then the working table is set between the two spaced concrete piers, and then a tensioning mechanism for tensioning steel strands or steel bars is installed on the two concrete piers. The concrete buttress on the vertical ground bears the tensile force parallel to the ground, that is, for the concrete buttress, it bears the shear force. According to the characteristics of concrete, the concrete can bear high-strength pressure, but it is difficult to bear the transverse shear force , so the traditional concrete pier must be poured with a large volume to bear the huge shear force transformed from prestressed tension. At the same time, in the actual production process, the geological survey status of each construction site is different. , the concrete buttress must pass through the liquefied layer and enter the solid soil layer to reduce the relative lateral displacement under the shear force. When the underground liquefied layer is high, it is often necessary to pour a large number of large-diameter Concrete piles can increase the lateral bearing pressure of the soil and reduce the lateral displacement of concrete piers. At the same time, the cost of pouring large-diameter concrete piles is high and unbearable

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