Experimental investigation of a bridge girder made of steel tube filled with concrete

摘要

An experimental investigation was carried out in an effort to comprehend the behavior of a bridge girder consisting of a steel tube filled with reinforced concrete and made composite with an overlying concrete deck. The experimental investigation also provided information for assessing various erection scenarios using such a system in bridge construction. The investigation consisted of designing and constructing a test specimen and loading it to collapse. A moment curvature analysis was used to predict the ultimate capacity of the system. This approach was able to predict the observed test behavior with good accuracy. The test specimen showed good ductility and maintained its strength up to the end of the test. Results of this investigation demonstrated the potential for using a concrete filled tube as a bridge girder.