Abstract: A computer approach to the optimal design of structural concrete beams is presented. The approach allows the optimization for a variety of possible merit functions, considers all relevant limit state constraints by any ...

Abstract: Mathematical programming techniques are used for the solution of a comprehensive optimal design problem formulation. The formulation, based on American codes of practice, includes constraints related to service, ultimate, ...

Abstract: Three-dimensional nonlinear dynamic time-history analyses of a three-story steel moment-resisting frame designed according to the Uniform Building Code for Los Angeles seismicity were carried out. Beams in both directions ...

Abstract: Rectangular columns constructed from steel plates are widely used to support highway bridges in Japan. Columns of this type, designed without special consideration for ductility, sustained damage during the 1995 Hyogo-ken ...

Abstract: In well-designed reinforced concrete frames subjected to earthquake shaking, flexural yielding and cracking occur at the ends of the beams as they undergo large lateral displacements. As the cracks form, the horizontal ...

Abstract: The seismic behavior of a three-story steel framed building designed by consultants for Los Angeles seismic conditions was assessed using 3D dynamic inelastic time-history analyses with near-fault as well as code design ...

Abstract: Ground motion records obtained from sites at known locations relative to earthquake faults were used to study near-fault (NF) ground shaking effects on the inelastic response of simple structures. The structures were ...

Abstract: Steel concentrically braced frames are generally designed to resist lateral force by means of truss action. Design considerations for columns in these frames are therefore governed by the column axial force while column ...

Abstract: Composite concrete filled tube (CFT) columns are advantageous for use in seismic resistant braced frame construction since these CFT columns are relatively inexpensive, stiff and strong. However, to utilize the composite ...

Abstract: Fatigue cracking occurs at the copes of stringer–floorbeam connections of older, riveted steel bridges. Some cracks are quite long and raise serious questions regarding the remaining fatigue life of the subject bridges. ...