Proposal for application of risk analysis to assess robustness of floor slabs pre-stressed with unbonded tendoms
More details
Hide details
Rzeszów University of Technology, The Faculty of Civil and Environmental Engineering and Architecture, Powstanców Warszawy 12, 35-084 Rzeszów, Poland
Carpathian State College in Krosno, Politechnik Institutution, Dmochowskiego 12, 38-400 Krosno, Poland
Submission date: 2021-05-05
Final revision date: 2021-06-28
Acceptance date: 2021-06-28
Publication date: 2022-03-30
Archives of Civil Engineering 2022;68(1):241-253
The list of potential hazards related to concrete elements and structures prestressed with the use of unbonded tendons, including the flat slabs, is long and fairly well recognized. In addition to the standard accidental events this list includes: mishandling during construction, small fire, local corrosion, loss of bond at the anchorage, second order effects, brittle fracture of elements, etc. Despite of these hazards related to unbonded post-tensioning, this type of structures are extensively promoted and used in practice thanks to the possibility of the large span floors and innovative character of this technology. The paper presents a proposal for the application of risk analysis to assess the robustness of structures with flat slabs prestressed with unbonded tendons. The adoption of variables that determine risk and robustness as fuzzy numbers assigned to linguistic variables are proposed. Numerical example is presented to demonstrate risk and robustness assessment of building structure with unbonded posttensioned slabs supported directly on columns.
Journals System - logo
Scroll to top