Assembled type ECC-RC composite column connected through grouting sleeve

Abstract

The invention discloses an assembled type ECC-RC composite column connected by a grouting sleeve. The assembled type ECC-RC composite column comprises a prefabricated RC pier column section A, a prefabricated ECC pier column bottom section and a prefabricated RC section B; a part of a prefabricated pier column is made of ECC instead of common concrete; and then the prefabricated ECC pier column bottom section is formed. According to the assembled type ECC-RC composite column, mature grouting sleeves are adopted for connection, tenons and mortises are arranged at joints, the shear capacity of the joints is effectively improved, and mounting and positioning functions are provided. The design that the ECC is only used in key parts of a structure, the common concrete is adopted in other parts has good economic benefits, and popularization and large-scale application of the combined structure are facilitated. The problems that an assembled type concrete structure and a common concrete pier column component are poor in ductility, prone to cracking, poor in durability, insufficient in anti-seismic property and the like can be effectively solved, and the composite column is suitable for a bridge structure fabricated pier or a building structure assembled column.

Description

technical field [0001] The invention relates to an assembled ECC-RC hybrid column connected by a grouting sleeve with the advantages of good crack resistance, high economic benefit and excellent seismic performance, which belongs 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, the prefabricated concrete structure is 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 structural earthquake resistance; (2) low tensile strength, easy to crack; (3) poor durability, and steel bars are easy to corrode. However, due to the existence of joints and joints, the integrity, durability and seismic performance of prefabricated components are not as good as th...

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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

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