Experiment Performance of a Novel Precast Concrete Column-to-Column Connection Using Steel Plate Hoop with Bolts

Abstract

At present, precast concrete structures are developing rapidly in China, and the precast concrete column-column connection is the key part in the fabricated concrete structure. A new type of column-to-column connection using steel plate hoop with bolts is presented in this paper, which has the advantages of simple installation and fast construction speed. However, the moment transfer mode of this connection is unique, which is different from the traditional reinforced concrete column and the concrete filled steel tube column. In order to study the flexural performance and mechanism of this connection mode, six new type connection members and one cast-in-situ member were tested under static low-cycle unidirectional repeated loading. The experimental phenomena, failure modes and load-strain relationships were introduced. The test results showed that this type connection using steel plate hoop with bolts has the same flexural bearing capacity as the cast-in-place member. The bending moment mechanism of this type connection is analyzed, and the design formula of this connection is given. The theoretical results are in good agreement with the experimental results.