Slab-column structure assembly system and floor slab prefabricated components and connection nodes thereof

Abstract

The invention discloses a slab-column structure assembly system. The assembly system comprises columns, floor slab prefabricated components with column cap connection slab strips, ribbed floor slab prefabricated components without column cap connection slab strips, prefabricated column caps or supporting slabs, and connection nodes. At least edges on two sides of all the floor slab prefabricated components with the column cap connection slab strips in the width direction are in a laminated slab format, horizontal grooves are formed in edges of the laminated slabs on the edges on two sides, ends of the floor slab prefabricated components with the column cap connection slab strips in the length direction are in butt joint or are placed on edges of the prefabricated column caps or the supporting slabs, and panels on the upper portions of edges of the ribbed floor slab prefabricated components without the column cap connection slab strips are placed on the laminated slabs on the side edges of the floor slab prefabricated components with the column cap connection slab strips, or the edges of the ribbed floor slab prefabricated components without the column cap connection slab strips are in butt joint with the laminated slabs on the side edges of the floor slab prefabricated components with the column cap connection slab strips. The invention further discloses the floor slab prefabricated components and the connection nodes. The slab-column structure assembly system, the floor slab prefabricated components and connection nodes can reduce supporting and formwork mounting.

Description

technical field [0001] The invention relates to the field of concrete structures and prefabricated building structures, in particular to a slab-column structure assembly system, floor slab prefabricated components and connecting nodes. Background technique [0002] Since prefabricated buildings conform to the production methods of environmental protection and energy saving, the state proposes to use about 10 years to make the proportion of prefabricated buildings in new buildings reach 30%. The floor height is very economical in underground buildings and as a multi-storey parking lot. The slab-column structure can be cast on site or prefabricated and will have a large market space. [0003] Whether the building structure is divided into components and connection nodes that can be factory produced, transported, easy to install, and conform to safe, reliable, economical and reasonable is the key first step of building industrialization - prefabricated buildings. [0004] At p...

AI Technical Summary

Problems solved by technology

In this form, the compressive stress of the friction force comes from the post-tensioned prestressed steel strands on site. Because of the special requirements of the connection, the construction process of the prestressed steel strands is cumbersome and difficult. The technical requirements are very high; in addition, the prestressing purpose of the joint tension is for the connection, and additional stress is generated on the original assembled components, which not only increases the design difficulty but also affects the project cost; and when using the "IMS" system , prestressed friction joints not only need to meet the relevant regulations of reinforced concrete structures, but also meet the requirements of "Technical Regulations for Integral Prestressed Prefabricated Slab-Column Structures CECS52: 2110", which is only an association standard regulation, not a national standard. From On the other hand, it indirectly shows that there are some problems in the connection method of the "IMS" system, or at least it shows that it is not a perfect structural form, and it is an implementation technology that has not passed national approval; in application, it is difficult to construct on site—that is, it is not suitable for industrial construction and the cost is high. The production and implementation of standards that are not suitable for the market economy have been hindered, resulting in not many applications in the past 20 or 30 years.

[0006] (2) At present, the division and connection nodes of the prefabricated floor slabs have the methods in the published patents ZL201621391998.3 and ZL2016111750922. Although it solves the principle of dividing and designing the large assembly slab-column structure, it is difficult for prefabricated components and connection nodes and the assembly site In terms of construction, it is a conventional practice, with shortcomings, requiring a lot of support and installing formwork

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