Construction method of large-span fragmented integrated double t-slab

Abstract

The invention relates to a construction method of a large-span sliced ​​integrated double-T slab, which is composed of ribs, wing plates and mortise keys, the ribs are composed of ribs, and the wing plates are composed of fins. The mortise and tenon is composed of connectors and solidified bodies, located at the junction of the ribs and the fins, connecting the ribs and the fins together, and the shear grooves or connectors are reserved on the fins. The ribs, fins and connectors are prefabricated in advance, and then assembled and integrated to form a whole double T-plate. Adopting the split-integrated double-T-slab construction method of the invention, it is possible to realize prefabricated splits in the factory and on-site integrated assembly, which greatly reduces the space occupation and transportation problems of components, greatly increases the supply speed of double-T-slabs, and accelerates On-site construction progress, reduced construction period, broad application prospects.

Description

technical field [0001] The invention relates to the technical field of concrete structures in civil engineering, in particular to a piece-integrated double-T slab, in particular to a construction method for the piece-integrated double-T slab. Background technique [0002] At present, prefabricated buildings have become a form of construction vigorously promoted by the country. The production of prefabricated components is an important construction stage of prefabricated buildings. Among the many prefabricated components, the double T-board will be The combination of beams and slabs has good structural mechanical properties, clear force transmission levels, simple geometric shapes, and rapid construction progress. It is a relatively economical load-bearing component that can be made into a large-span, large-coverage area. The double T plate is composed of a wing plate and two ribs. The wing plate is not only the direct bearing surface of the external load and has the function...

AI Technical Summary

Problems solved by technology

[0003] However, in engineering applications, when the span of the double T plate is large, due to its huge edge size and large space occupation, it must be produced on site due to the limitation of transportation.

There are still thorny problems in the on-site production of double T-boards, that is, the huge outline volume of the integral double-T boards requires a large amount of space for stacking. Many projects cannot meet the stacking requirements because they cannot provide enough space, which affects the progress of the project.

Moreover, even when the length of the double T-plate is small enough to meet the requirements of road transportation, it takes up a large cargo space, resulting in a limited carrying capacity of a vehicle, resulting in an increase in transportation costs and a lag in project progress, which is not conducive to the double-T plate Promotion

In addition, the open-air cast-in-place production of the double T-slab is also affected by typhoons and heavy rains, which also affect the progress of the project

Practice has proved that the traditional construction method of double T-board as a whole is a bottleneck that seriously restricts the construction period. The impact is so great that it often leads to a multiplied construction period, which does not reflect the advantages of prefabricated buildings.

[0004] Therefore, the existing one-piece prefabricated double T-plate construction method has obvious defects, and new construction methods are needed to improve

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