Combined column formed by embedding round steel tubes filled with recycled concrete in multiple-cavity steel pipe filled with concrete and provided with batten plates

Abstract

The invention provides a combined column formed by embedding round steel tubes filled with recycled concrete in a multiple-cavity steel pipe filled with concrete and provided with batten plates. The combined column comprises a polygonal steel pipe (1), an inner partition board (2), normal concrete (3), the round steel tubes (4), recycled concrete (5) and the batten plates (6), wherein the polygonal steel pipe is divided into multiple small cavities through the inner partition board; the restriction effect of steel plates on the core concrete is improved, so that the concrete is in a three-dimensional pressed state highly, therefore, the concrete strength is improved greatly, and the plasticity and toughness of the concrete are improved remarkably; meanwhile, due to the arrangement of the inner partition board, the stiffness, bearing capacity, ductility and seismic capacity of the whole component are improved to a certain extent; the round steel tubes have the stronger effect of a hoop, so that the influence on stress performance caused by degradation of recycled concrete material performance is reduced even eliminated, the application of the recycled concrete is popularized, and meanwhile, the structural performance is ensured; under the earthquake reciprocating effect, the earthquake energy is consumed through the mutual shearing of the batten plates and the concrete, so that the seismic performance is improved.

Description

technical field [0001] The invention is a multi-cavity steel pipe concrete embedded circular steel pipe recycled concrete composite column with embellished plates, which is mainly applied to the steel pipe concrete composite column of high-rise and super high-rise buildings in building structures. Background technique [0002] With the progress and development of society, people's living standards are also constantly improving, various forms of buildings emerge in endlessly, and buildings that meet different functions also emerge as the times require. In particular, the emergence of a large number of high-rise and super high-rise buildings has put forward higher requirements for structural design, which requires new theories and new technologies to support the construction of such buildings. Rectangular concrete-filled steel tube columns and circular concrete-filled steel tube columns commonly used in engineering cannot meet the needs of the project infinitely due to their o...

AI Technical Summary

Problems solved by technology

A large number of studies have found that compared with ordinary concrete, recycled concrete has defects such as low strength, low elastic modulus, high water absorption, and poor durability.

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