Moment-capacity and rotational stiffness of endplate connections to concrete-filled tubular columns with flowdrilled connectors

A test programme to obtain experimental data on the behaviour of endplate b eam to column connections has been conducted. The reported tests concern jo ints made between universal beams and tubular columns using endplates bolte d directly to: the column face with ordinary bolts screwed into threaded ho les formed using the flowdrill process. Results obtained from tests are pre sented in a series of three papers; this final paper reports test conducted with concrete-filled tubes and the results are compared with those from a parallel series of tests in which the tubes were unfilled. Significant diff erences in strength and stiffness were observed. (C) 1999 Elsevier Science Ltd. All rights reserved.