Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Retrofit of Reinforced Concrete Columns Using Composite Wraps to Resist Blast Effects
Analyses were conducted to demonstrate the effectiveness of composite wrapped columns for improving the survivability of existing reinforced concrete multistory buildings to attacks by explosives. Different standoff distances and charge sizes were considered. Two building designs were analyzed: one in which the building members were designed primarily for gravity loads (UBC seismic zone 1) and one in which the members were designed to resist seismic loads (UBC seismic zone 4). Structural response predictions were performed with the three-dimensional Lagrangian finite element code DYNA3D, using a concrete material model especially designed to predict nonlinear concrete responses to explosive loads. The results indicate that under some circumstances composite wrap can be an effective means to retrofit an existing facility to lessen its vulnerability to blast loads.
Retrofit of Reinforced Concrete Columns Using Composite Wraps to Resist Blast Effects
Analyses were conducted to demonstrate the effectiveness of composite wrapped columns for improving the survivability of existing reinforced concrete multistory buildings to attacks by explosives. Different standoff distances and charge sizes were considered. Two building designs were analyzed: one in which the building members were designed primarily for gravity loads (UBC seismic zone 1) and one in which the members were designed to resist seismic loads (UBC seismic zone 4). Structural response predictions were performed with the three-dimensional Lagrangian finite element code DYNA3D, using a concrete material model especially designed to predict nonlinear concrete responses to explosive loads. The results indicate that under some circumstances composite wrap can be an effective means to retrofit an existing facility to lessen its vulnerability to blast loads.
Retrofit of Reinforced Concrete Columns Using Composite Wraps to Resist Blast Effects
J. E. Crawford (Autor:in) / L. J. Malvar (Autor:in) / B. W. Dunn (Autor:in) / D. J. Gee (Autor:in)
1996
18 pages
Report
Keine Angabe
Englisch
Construction Equipment, Materials, & Supplies , Detonations, Explosion Effects, & Ballistics , Explosion effects , Retrofitting , Columns(Supports) , Reinforced concrete , Buildings , Composite structures , Reinforced plastics , Structural response , Blast , Standoff , Resistance , Predictions , Survivability , Fiber reinforcement , Blast effects , Composite wraps , Frp(Fiber reinforced plastic)
Retrofit of Reinforced Concrete Structures to Resist Blast Effects
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Concrete columns confined with CFRP wraps
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Concrete columns confined with CFRP wraps
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