Encontrados 11 documentos, a visualizar página 1 de 2
Experimental analysis of reinforced concrete block masonry beams using pre-fabr...
Haach, V.; Vasconcelos, Graça; Lourenço, Paulo B.Masonry spandrels together with shear walls are structural components of a masonry building subjected to lateral loads. Shear walls are the main components of this structural system, even if masonry spandrels are the elements that ensure the connection of shear wall panels and the distribution of stresses through the masonry piers. The use of prefabricated truss type bars in the transversal and longitudinal dir...
Numerical analysis of concrete block masonry beams under three point bending
Haach, V.; Vasconcelos, Graça; Lourenço, Paulo B.A parametrical study of masonry beams through numerical modelling has been performed in order to better understand the mechanical behaviour of these elements. Boundary conditions, geometry and reinforcement ratios are the main parameters analysed in this study. The numerical simulation is performed with DIANA® software, based on the Finite Elements Method. A comparison between numerical and experimental results...
Parametrical study of masonry walls subjected to in-plane loading through numer...
Haach, V.; Vasconcelos, Graça; Lourenço, Paulo B.This paper deals with the numerical assessment of the influence of parameters such as pre-compression level, aspect ratio, vertical and horizontal reinforcement ratios and boundary conditions on the lateral strength of masonry walls under in-plane loading. The numerical study is performed through the software DIANA® based on the Finite Element Method. The validation of the numerical model is carried out from a ...
Influence of aggregates grading and water/cement ratio in workability and harde...
Haach, V.; Vasconcelos, Graça; Lourenço, Paulo B.Mortar is the material responsible for distribution of stresses in masonry structures. Knowledge about the fresh and hardened properties of mortar is fundamental to ensure a good performance of masonry walls. Water/cement ratio and aggregates grading are among several variables that influence physical and mechanical behaviour of mortars. An experimental program is presented in order to evaluate the influence of...
Development of a design method for reinforced masonry subjected to in-plane loa...
Haach, V.Tese de doutoramento em Engenharia Civil (ramo do conhecimento Estruturas) ; Masonry walls consist of the main elements responsible for the global stability of masonry buildings when subjected to lateral loads such as wind and seismic forces. These elements are subjected to gravity forces, bending moments and shear forces due to the horizontal loading. The masonry beams above the openings are important structu...
Validation of masonry systems for in-plane lateral loading using truss reinforc...
Lourenço, Paulo B.; Vasconcelos, Graça; Gouveia, João P.; Haach, V.; Freitas, Jeovan F.The paper presents and describes the main issues related to two building systems for modern masonry structures using truss reinforcement, currently under development at University of Minho, one based on lightweight concrete blocks and another based on reinforced concrete block masonry. Details of the experimental and numerical work carried out are addressed, together with conclusions on the performance of the s...
Composition study of a mortar appropriate for masonry cavities and joints
Haach, V.; Vasconcelos, Graça; Lourenço, Paulo B.; Mohamad, GihadIt is well known that unreinforced masonry behaves as a quasi-brittle material when subjected to seismic loading. The construction in unreinforced masonry is usually not allowed in regions with moderate to high seismic hazard. The alternative to unreinforced masonry and even to reinforced concrete and steel construction is reinforced masonry, which appears to perform adequately under seismic loading. This work ...
Cylic behavior of truss type reinforced concrete masonry walls
Haach, V.; Vasconcelos, Graça; Lourenço, Paulo B.Masonry is one of the most antique structural systems in the world. However, it has been losing prestige with the advance of other structural systems such as reinforced concrete and steel. This was to certain extent the result of scarce or even absence of rules, recommendations and design methods available for masonry. On the other hand, masonry has advantages other than good performance as structural system su...
Alvenaria armada : soluções inovadoras em Portugal
Vasconcelos, Graça; Gouveia, João P.; Haach, V.; Lourenço, Paulo B.Neste trabalho pretende-se abordar aspectos relacionados com as tipologias de paredes de alvenaria estrutural e com a concepção de edifícios em alvenaria. Além disso, são apresentadas duas principais soluções em alvenaria armada que têm vindo a ser objecto de estudo na Universidade do Minho. Discutem-se aspectos de concepção e tipologias e complementarmente os resultados experimentais obtidos na validação exper...
Developing innovative systems for reinforced masonry walls
Mosele, F.; Porto, F. da; Modena, C.; Fusco, A. di; Cesare, G. di; Vasconcelos, Graça; Haach, V.; Lourenço, Paulo B.; Beer, I.; Schmidt, U.The Commission of the European Communities has recently funded a CRAFT research project aimed at developing innovative systems for load and non-load-bearing reinforced masonry walls. The project involves twelve partners coming from four different European countries, among which there are universities and research centres, small and medium enterprises for the production of clay and concrete units and mortars, a ...
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