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Static analysis of reinforced concrete walls with additionally made openings
Šimek, Ondřej
;
Borzovič, Viktor
(referee) ;
Vítek, Jan
(referee) ;
Zich, Miloš
(advisor)
The thesis deals with the implementation of additional openings in reinforced concrete walls from the point of view of structural analysis. Two types of walls are analysed: panel walls and infill shear walls. In the introductory part, the current state of knowledge in the methods of analysis of this issue is discussed and their advantages or shortcomings are pointed out. Several types of wall specimens with pre- or post-made openings with different types of reinforcement representing the state after an additional opening is made are proposed and their behaviour is experimentally and subsequently numerically verified. On the basis of the data obtained, methods are proposed for the structural analysis and the design of reinforced concrete walls with additional openings. For panel walls with openings, the analysis method using wall models is extended and the method of static assessment is specified. The method of analysis for infill shear walls with an opening using equivalent diagonal bar strut has been extended to take account for the reinforcement and its load state. The proposed structural analysis methods were applied to a real prefabricated house with an additional opening and to a hypothetical frame structure with a proposed structural intervention in its bracing system.
Detailed record
Experimental Verification of Making an Additional Opening to the Reinforced Concrete Walls
Šimek, Ondřej
;
Zich, Miloš
;
Požár, Michal
;
Nečas, Radim
The subject of the article is to present the results of experiments of prefabricated reinforced concrete walls that were loaded prior to the making of an additional opening. These are walls that simulate a regular wall in a wall panel building, into which an additional opening is made. The walls are reinforced with different variants of reinforcement: from simple reinforcement with wire mesh to standard reinforcement around the perimeter, in the lintel and the pillars. The influence of so called "sleeping reinforcement" is studied. This reinforcement is pre-prepared in the panel for the case of making an additional opening. The effect of this reinforcement on the development of cracks and changes in strain on the panel after making the additional opening is studied. Long term monitoring of the panels with newly made opening is also conducted as a part of the experiment.
Detailed record
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