A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evaluation of anticipated post-fire repair cost for resilient design of composite slab panels
The design limit states form the basis of current structural fire design approaches. These design practices overlook the post-fire resilience and repairability of the structure. Consequently, a minor fire might lead to an irreparable structure and a need of demolishing it. We propose a framework to evaluate during the design phase the anticipated repair cost for a structure in case of a fire event, in order to enable consideration of post-fire resilience in design decisions. We apply the framework to evaluate the repair cost for a composite slab panel comprising a concrete slab, two girder and two boundary beams at opposite edges, and two central beams at the center. Two fire designs for the composite slab panel satisfying the nominal fire design requirement are considered: a prescriptive design and a performance-based design which harnesses tensile membrane action and omits insulation on central beams. The repair costs are evaluated and compared for both designs for a range of natural fire exposures, demonstrating that the performance-based design achieves its target of stability during fire, but also results in higher anticipated post-fire damages. This concept of pre-evaluation of repair cost can further be implemented in life-cycle cost optimization procedures to allow an optimized structural design.
Evaluation of anticipated post-fire repair cost for resilient design of composite slab panels
The design limit states form the basis of current structural fire design approaches. These design practices overlook the post-fire resilience and repairability of the structure. Consequently, a minor fire might lead to an irreparable structure and a need of demolishing it. We propose a framework to evaluate during the design phase the anticipated repair cost for a structure in case of a fire event, in order to enable consideration of post-fire resilience in design decisions. We apply the framework to evaluate the repair cost for a composite slab panel comprising a concrete slab, two girder and two boundary beams at opposite edges, and two central beams at the center. Two fire designs for the composite slab panel satisfying the nominal fire design requirement are considered: a prescriptive design and a performance-based design which harnesses tensile membrane action and omits insulation on central beams. The repair costs are evaluated and compared for both designs for a range of natural fire exposures, demonstrating that the performance-based design achieves its target of stability during fire, but also results in higher anticipated post-fire damages. This concept of pre-evaluation of repair cost can further be implemented in life-cycle cost optimization procedures to allow an optimized structural design.
Evaluation of anticipated post-fire repair cost for resilient design of composite slab panels
Chaudhary, Ranjit Kumar (author) / Lucherini, Andrea (author) / Gernay, Thomas (author) / Van Coile, Ruben (author)
2022-01-01
Journal of Building Engineering ; ISSN: 2352-7102
Article (Journal)
Electronic Resource
English
DDC:
690
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