Prohlížení Acta Polytechnica CTU Proceedings. 2022, vol. 36 dle názvu
Zobrazují se záznamy 16-34 z 34
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Maximizing information obtained from standardized fire tests using a Bayesian framework
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Current practice is mostly focused on prescriptive design approaches where the performance of the structure in case of fire is assessed based on its performance in standardized fire tests. Those tests indicate whether the ... -
New or existing, does it matter?
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Both when designing new and when evaluating existing structures, methods of analysis must be based on established engineering theory and practice. Also, the general principles of structural reliability regarding the treatment ... -
On the effects of modified lane configuration due to construction works on bridge loading
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Construction works are frequently recurring events within highway networks, temporarily altering the characteristics of the traffic flow and hence of the bridge loading process. Consequently, highway bridge superstructures ... -
On the treatment of measurement uncertainty in stochastic modeling of basic variables
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The acquisition and appropriate processing of relevant information about the considered system remains a major challenge in assessment of existing structures. Both the values and the validity of computed results such as ... -
Practical concepts for the use of probabilistic methods in the structural analysis and reassessment of existing bridges - presentation of latest research and implementation
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)In structural engineering and bridge construction, probabilistic calculations are only performed in a few exceptional cases. The ability to directly use information from the existing structure is an important advantage of ... -
Probabilistic assessment and sensitivity analysis of existing concrete bridge via surrogate modeling
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The paper is focused on probabilistic assessment and sensitivity analysis of existing prestressed concrete bridge using surrogate model in form of Polynomial Chaos Expansion (PCE). The bridge was selected in the framework ... -
Probabilistic models for resistance variables in fib Model Code 2020 for design and assessment
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The fib Model Code offers pre-normative guidance based on the synthesis of international research, industry and engineering expertise. Its new edition (draft MC 2020) will bring together coherent knowledge and experience ... -
Probabilistic safety assessment of Koeberg spent fuel pool
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The effective management of spent fuel pool (SFP) safety has been raised as one of the emerging issues to further enhance nuclear installation safety after the Fukushima accident on March 11, 2011. SFP safety-related issues ... -
Reliability of a structure stricken by a tornado
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)A tornado may become a very dangerous climatic action for any structure, depending on the tornado intensity and extent of the structure. The origin of a tornado, its range and further activity appear to be unpredictable ... -
Reliability of existing reinforced concrete slabs exposed to punching shear
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Selected standardised models for the verification of punching shear in reinforced concrete structures are applied for the probabilistic assessment of their reliability level. It appears that the models given in EN 1992-1-1 ... -
Risk based maintenance for Swiss railway bridges: concept, implementation and first experiences
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The Swiss Federal Railway (SBB) has an inventory of approx. 6,000 bridges. So far, condition classes of the individual bridges have been used for maintenance management. To improve the efficiency of the maintenance management, ... -
Semi-probabilistic assessment of existing bridge using simplified methods for estimation of variance
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The paper is focused on assessment of existing prestressed concrete bridge by simplified methods for estimation of coefficient of variation. The bridge was selected in the framework of the European Project INTERREG ... -
Simplified modelling of the performance of concrete tunnels during fire and post-fire damage classification
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The performance of concrete tunnel structures during and after fire is not well understood. This is an obstacle to the adoption of risk-based approaches for fire safety design of tunnel structures. Upon the request of the ... -
Statistical characterisation of reinforcement properties for textile-reinforced concrete: a novel approach
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)The potential of textile-reinforced concrete is broad: it can be used in new structures and in the retrofitting of existing structural components. Designing textile-reinforced concrete requires knowledge about the mechanical ... -
Structural assessment and expected utility gain
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)This paper contains an introduction, probabilistic formulation, and exemplification (1) of system state and utility actions, (2) system state and utility action value analysis and (3) a threshold formulation for a predicted ... -
Structural reliability of existing rc beams strengthened with UHPFRC tensile layers
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)A methodology for reliability analysis of reinforced concrete (RC) beams strengthened with ultra high-performance fibre reinforced concrete (UHPFRC) tensile layers is presented. The proposed methodology includes stochastic ... -
Structural reliability of hollow core slabs considering compressive membrane action
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Compressive membrane action can considerably improve the load bearing capacity of concrete slabs and beams in case of excessive loaded due to an accidental event. Currently, only limited research has been focusing on ... -
The role of multi-fidelity modelling in adaptation and recovery of engineering systems
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Significant research has been conducted in identifying optimal recovery and adaptation decisions in disruptive scenarios using engineering models. In this context, an aspect that has been target of limited research is that ... -
Uncertainty assessment for the Bayesian updating process of concrete strength properties
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Reassessment of infrastructure buildings has become an essential approach to deal with increasing traffic loads on ageing infrastructure buildings and to verify the service-life of those structures. Good estimation of the ...