Prestressed prefabricated building and its assembly method

Abstract

The invention discloses a prestressed assembly type building comprising plinths, connecting pillars, prestressed longitudinal beams, prestressed beams, precast pillars, precast stairs and precast floors. The connecting pillars are arranged upon the plinths and integrated with the same in the precasting manner. The prestressed longitudinal beams, the prestressed beams and the precast pillars are arranged upon the connecting pillars and integrated with the same through mutual tension in the anchoring manner. Floor connecting holes, beam anchoring holes and tensioning holes are formed in the prestressed longitudinal beams and the prestressed beams. The tensioning holes allow steel strands to pass. The other tensioning holes and anchoring holes are formed in mounting connecting faces of the precast pillars and the connecting pillars or upper precast pillars. Stair beams are arranged on places, parallel to landings, of the precast stairs. Openings are formed in the corresponding precast pillars and provided with the stair beams. A whole floor formed by connecting a single precast floor is anchored by anchor bolts, the longitudinal beams and the beams. A steel frame is fixed on the longitudinal beams, the beams and the precast pillars. Wallboards are fixed on the steel frame and further arranged on places between the longitudinal beams and the beams. The prestressed assembly type building is firm in structure, high in external force damage preventive ability, adaptable to welding-free field positioning, assembly and connecting of elements and low in connecting assembly cost and allows components to be reusable.

Description

technical field [0001] The invention relates to the technical field of prefabricated buildings, in particular to a prestressed prestressed prefabricated building suitable for on-site positioning and assembly of components, in which structural parts and steel bars are connected without welding and an assembly method thereof. Background technique [0002] At present, prefabricated buildings adopt non-prestressed assembly. The traditional concrete components are prefabricated in the factory and transported to the construction site for pouring and assembly. Although cast connection has the characteristics of saving building materials, less on-site construction, better construction environmental protection, and can realize industrialization of factories, it still has the following defects: 1. The integrity of the connection is poor, and the resistance to external force and earthquake resistance is not high. There is a rigid connection between them, which cannot be restored to the...

AI Technical Summary

Problems solved by technology

[0002] At present, prefabricated buildings adopt non-prestressed assembly. The traditional concrete components are prefabricated in the factory and transported to the construction site for pouring and assembly. Although cast connection has the characteristics of saving building materials, less on-site construction, better construction environmental protection, and can realize industrialization of factories, it still has the following defects: 1. The integrity of the connection is poor, and the resistance to external force and earthquake resistance is not high. There is a rigid connection between them, which cannot be restored to the original state after being subjected to external force; 2. The construction environment is poor, and a large amount of formwork is wasted, especially the quality controllability of the connection is poor; 3. Since it is a pouring connection, it can only be disassembled destructively. The reuse rate of components is low; 4. The traditional concrete components are used for assembly, the span of beams and slabs is limited, and the only way to increase the span is to increase the use of columns; 5. Waste of manpower and material resources

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