WP4
WP4
Design of optimal HCW systems
Design of optimal HCW systems
Primary objectives:
Identification of the optimal range of application of the innovative HCW system based on a parametric analysis according to the most common requirements identified in WP1;
Identification of the reduction factor (behaviour q-factor) possibly as a function of the design parameters.
Development and assessment of a simplified design procedure based on linear dynamic analysis and reduction factor;
Reliability analysis of the identified optimal solutions;
Preparation of design tables to support expedite optimal design.
Global HCW systems were developed using calibrated models for a numerical parametric study.
Optimal HCW systems were designed through 54 case studies with different building heights, coupling ratios (CR), height-to-length ratio of the RC wall, and different base conditions of the RC wall (fixed base, hinged base with corner components designed as non-dissipative elements, hinged base with corner components designed as dissipative elements).
A simplified design procedure was developed and documented while estimating an optimum behavioral factor, q. Depending on the specific features of the innovative HCW system at hand (e.g., building height, CR, dissipative or non-dissipative corner components), it is now possible for a designer to select the most suitable and representative q-factor from the Design Table and consequently carry out an elastic design and analysis of the HYCAD HCW systems.
Reliability analyses were conducted on the 54 design case studies, via (i) defining a seismic hazard, (ii) understanding the seismic response of the HCW systems at the design hazard level, (iii) developing demand-intensity plots and (iv) estimating the risk by characterizing the influence of the wall-base connection, height-to-length ratio of the RC wall and building height. The failure rates of selected case studies were presented and compared.
Two full-scale design examples were documented – multi-storey building with one or more HCW systems as earthquake resistant systems. The economic feasibility of the innovative HCW systems were studied with respect to similar multi-storey structures designed with conventional shear walls for a same seismic demand.