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A platform for research: civil engineering, architecture and urbanism
Numerical studies on load-carrying capacities of notched concrete beams subjected to various concentrated loads
AbstractIn solving various fatigue problems, the time-varying characteristics of cyclic loads on structures due to winds, waves, vehicles and so forth are often oversimplified by assuming the loading positions as fixed. In order to clarify spatial effects of loading conditions on cracking behaviors and the maximum loads, numerical studies on the load-carrying capacities of notched concrete beams subjected to various concentrated loads are conducted. The fracture processes of a simply supported beam with multiple cracks are analyzed by using the extended fictitious-crack model. In the cases where loading positions are restricted to at two locations of four-point bending and at the midspan, it is shown that the flexural strengths of notched beams vary significantly, depending on particular loading conditions. The effects of initial notch configuration and lengths on the load-carrying capacities of the beam are clarified. Based on these results, the strength reduction due to various fatigue failures is discussed.
Numerical studies on load-carrying capacities of notched concrete beams subjected to various concentrated loads
AbstractIn solving various fatigue problems, the time-varying characteristics of cyclic loads on structures due to winds, waves, vehicles and so forth are often oversimplified by assuming the loading positions as fixed. In order to clarify spatial effects of loading conditions on cracking behaviors and the maximum loads, numerical studies on the load-carrying capacities of notched concrete beams subjected to various concentrated loads are conducted. The fracture processes of a simply supported beam with multiple cracks are analyzed by using the extended fictitious-crack model. In the cases where loading positions are restricted to at two locations of four-point bending and at the midspan, it is shown that the flexural strengths of notched beams vary significantly, depending on particular loading conditions. The effects of initial notch configuration and lengths on the load-carrying capacities of the beam are clarified. Based on these results, the strength reduction due to various fatigue failures is discussed.
Numerical studies on load-carrying capacities of notched concrete beams subjected to various concentrated loads
Shi, Zihai (author) / Suzuki, Masaki (author)
Construction and Building Materials ; 18 ; 173-180
2003-10-12
8 pages
Article (Journal)
Electronic Resource
English
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