Multilayer large-span improved concrete honeycomb space grid box type structure and manufacturing method

Abstract

The invention discloses a multilayer large-span improved concrete honeycomb space grid box type structure which comprises a multilayer large-span concrete honeycomb hollow sandwich floor covering and a grid type frame. The space grid box type structure is composed of the vertical grid type frame and a transverse honeycomb hollow grid. The space three-dimensional stress is substantially improved, the lateral stiffness of the structure is also improved remarkably, the ductility and hysteresis performance are better, the structure is suitable for being applied to areas high in seismic intensity, and the multilayer large-span improved concrete honeycomb space grid box type structure is a novel concrete structure system which meets the construction policy including applicability, economical efficiency, environmental friendliness and attractiveness and has great economic benefits and social benefits.

Description

technical field [0001] The invention relates to a multi-layer large-span improved concrete honeycomb space grid box structure and a manufacturing method, belonging to the technical field of multi-layer public buildings. Background technique [0002] Multi-storey (2-4 storeys) long-span (24m-40m) public buildings have achieved the effect of saving land and promoting the construction of ecological civilization. For example, multi-storey gymnasiums are typical representatives of this type of buildings. Generally speaking, the height of the first floor is 9.5 m, can be used as basketball and volleyball training venues, the second and third floors are respectively for table tennis, gymnastics and other training venues, and can also be used as multi-functional public halls. [0003] figure 1 The long-span building shown is narrow and long, when b=2.8m, h=2.425m, span Ly=mb=11×2.8m=30.8m, and its long side Lx=n×2h=13×2×2.425 m=63.05m, floor area 1942m 2 , the ratio of the long s...

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Problems solved by technology

The public building is divided into three floors, excluding the area of ​​fire protection, buildings and elevators, the area of ​​the venue is 5626m 2 , the total height H=9.5m+2×6.5m=22.5mfigure 2 Concrete frame structure with 3×3=9 grids in the entire gable area, whose lateral stiffness does not meet the requirements of the code, and fork-type diagonal braces should be added in each grid to improve the lateral stiffness of the gable. Unable to meet the architectural policy requirements of "applicable, economical, green, and beautiful"; the second gable structure method is to figure 1 A frame column is set at the end support of the gable end of the concrete honeycomb hollow floor, and the hollow beam of the floor is rigidly connected here, forming a image 3 frame shown, and figure 2 Compared with the increase in the number of grids by 3 times, the internal force distribution is more uniform than the former, but the lateral stiffness and shear stiffness of the gable wall are not significantly improved, resulting in the technical indicators of the gable wall not meeting the requirements of the regulations. Improvements to the structure of the building

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