An assembled ecc-rc mixing column connected by grouting sleeve

Abstract

The invention discloses an assembled ECC-RC mixed column connected by a grouting sleeve, comprising a prefabricated RC pier column segment A, a prefabricated ECC pier column bottom segment, and a prefabricated RC segment B. Part of the prefabricated pier column uses ECC to replace ordinary concrete, and then forms the bottom segment of the prefabricated ECC pier column. The connection of the prefabricated ECC‑RC hybrid column adopts a relatively mature grouting sleeve connection, and the tenon and tenon groove are arranged at the joint, which effectively improves the shear resistance of the joint and provides the function of installation and positioning. The design of using ECC only in the key parts of the structure and using ordinary concrete in the rest of the structure has good economic benefits, which is conducive to the popularization and large-scale application of this composite structure. The invention can effectively solve the problems of poor ductility, easy cracking, poor durability and insufficient seismic performance of prefabricated concrete structures and ordinary concrete pier and column components, and is suitable for prefabricated piers of bridge structures or prefabricated columns of building structures.

Description

technical field [0001] The invention relates to an assembled ECC-RC hybrid column connected by grouting sleeves, which has the advantages of good crack resistance, high economic benefit and excellent seismic performance, belonging to the technical field of bridge structures and can also be used in the technical field of building structures. Background technique [0002] In recent years, my country has vigorously promoted the industrialization of construction. Among them, prefabricated concrete structures are the most widely used. However, due to the characteristics of concrete materials, the following problems generally exist in concrete structures: (1) poor ductility, which is not conducive to the structure's earthquake resistance; (2) low tensile strength, easy to crack; (3) poor durability, steel bars are easy to corrode. However, due to the existence of joint joints, the integrity, durability and seismic performance of prefabricated components are not as good as those o...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of poor ductility, easy cracking, poor durability, and insufficient seismic performance of prefabricated concrete structures and ordinary concrete pier members, the present invention provides a simple connection structure, good crack resistance, high economic benefits and excellent anti-corrosion properties. The prefabricated ECC-RC hybrid columns connected by grouting sleeves with the advantages of bending and crack resistance are suitable for prefabricated piers of bridge structures or prefabricated columns of building structures

Images