STUDY ON SHEAR CAPACITY OF RC COLUMNS CONFINED WITHRECTANGULAR STEEL PIPE USED FOR THE PRECAST CONCRETE WALL STRUCTURE REDUCING TO COLUMNS AT THE GROUND STOREY

Abstract

This study is initiated to provide data for the proposed eleven storey precast concrete wall structure reducing to columns at the ground storey, where is intended to use for shopping store and parking garage. This structure essentially consists of multi-storey shear walls assuming a single rigid mass above a flexible lower storey at transverse direction so it might qualify as two storey building. The most structually efficient sollusion is that RC columns should be confined with rectangular steel pipe at the ground storey. The objective of this study is to develope the lower structure may be capable of satisfactory behaviour under seismic loading. An experimental investigation for columns confined with steel pipe carried out to assess the considerable improvement in the ultimate shear capacity and to propose the advanced theory for the shear strength.