Expansion cup type connection structure and connection method between reinforced concrete column and foundation

Abstract

The invention discloses a belly-expanded cup mouth type connecting structure of a reinforced concrete column and a foundation and a connecting method. The column is inserted into a belly-expanded cupmouth of the foundation. Filling concrete is filled and compacted in a space in the belly-expanded cup mouth, and meanwhile, column encircling bars are adopted for reinforcement. The foundation comprises a foundation boss and a foundation slab. The belly-expanded cup mouth is vertically downwards formed in the center of the top surface of the foundation boss. Mouth strengthening bars are arrangedin the cup wall of the belly-expanded cup mouth and used for crack resistance of the cup wall on the upper portion and punching shear resistance of the cup bottom on the lower portion. A set of mouthstirrups are arranged on the periphery of the belly-expanded cup mouth around the mouth strengthening bars and used for preventing the cup mouth from being ripped. A set of boss vertical bars are arranged in inward concrete on each of the four sides of the boss and used for protecting the boss against bending failure and the cup bottom against punch failure. A set of boss stirrups are arranged inthe inward concrete on the periphery of the boss around all the boss vertical bars and used for protecting the overall boss against shear failure. Through the connecting structure provided by the invention, the column and the foundation are more simplified and have the superior performance.

Description

technical field [0001] The invention relates to an expanding cup-shaped connection structure and connection method between a reinforced concrete column and a foundation, and is an assembled structure technology in the field of construction engineering. Background technique [0002] In recent years, with the continuous improvement of people's requirements for living conditions and living environment, the construction industry has developed rapidly. However, the development of the construction industry has caused serious resource consumption and environmental pollution, forcing people to seek a new way out of the construction industry. At present, the industrialization of buildings characterized by prefabricated buildings is one of the key ways to achieve low-carbon and sustainable development in the construction industry. [0003] In prefabricated buildings, the connection of structural components has a crucial influence on the efficiency of prefabricated and assembled const...

AI Technical Summary

Problems solved by technology

[0005] There is another dry connection method between the column and the foundation, which is to insert the prefabricated column into the cup mouth (straight mouth) of the prefabricated foundation, and then pour fine stone concrete into the gap of the cup mouth. This connection method is very simple. However, the connection nodes can only provide hinge connection effects, which are mainly used in structures such as single-layer bent frames, and cannot be applied to structures such as frame structures that need to provide consolidation connection effects.

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