Lajes Fungiformes – Download as PDF File .pdf), Text File .txt) or read online. PDF | On Jun 1, , António Pinho Ramos and others published Punçoamento em Lajes Fungiformes Reforçadas com Parafusos Transversais Aderentes. Download Citation on ResearchGate | ISOLAMENTO SONORO EM LAJES FUNGIFORMES ALIGEIRADAS COM MOLDES PERDIDOS: SOLUÇÕES.
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Skip to main content. Log In Sign Up. Add Social Profiles Facebook, Twitter, etc. Assessing the behaviour of RC beams subject to significant gravity loads under cyclic loads more.
Strengthening of flat slabs with post-tensioning using anchorages by bonding more.
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This work aims to study a new flat slab strengthening technique based on post-tensioning with anchorages by bonding using an epoxy adhesive. The main advantages of this technique over the traditional prestress strengthening systems that The main advantages of this technique over the traditional prestress strengthening systems that use mechanical Development of an injectable grout for concrete repair and strengthening more.
Cement and Concrete Composites. Punching of reinforced concrete slabs—numerical and experimental analysis and comparison with codes more. Ramosand Valter Lucio. RamosDuarte Fariaand Valter Lucio. The influence of various parameters on the punching behaviour is still in discussion and some contradictory conclusions were drawn by several fungigormes. In order to contribute with new information, a parametric analysis regarding In order to contribute with new information, a parametric analysis regarding geometrical and material parameters affecting punching behaviour of flat slabs with orthogonal reinforcement and square columns was run in a previously verified 3D nonlinear finite element analysis.
It was found that compressive strength, fracture energy and reinforcement ratio are the most important parameters regarding punching load. It was shown that the concept of structural brittleness is appropriate to be used in punching load provisions by codes, turning possible its use in a broad range of concrete types. Design of precast concrete structures against accidental actions more.
Actions and structural response properties Preliminary tests were conducted to focus on the grout best able to fill a fibrous network since the goal of this study was to develop an optimized.
UFRG textendash Unidirectional fibre reinforced grout as strengthening material for reinforced concrete structures more. Rubble stone masonry walls strengthened with reinforced lime-cement mortar render and transversal ties, tested under axial compression loads more. This paper refers to the results of an innovative strengthening solution, which is characterized by the use of transversal ties and 30mm thick lime-cement mortar render, reinforced with glass fibre.
This study was included in an This study was included in an experimental research programcarried out at the Lajess Engineering Department of Universidade de Lisboa, to evaluate a number of structural strengthening solutions for ancient rubble stone masonry buildings. In this research program, some specimens of rubble stone masonry without strengthening and others, after the execution of several strengthening solutions, were subjected to axial compression and compression-shear tests.
This research program was sponsored by industrial companies. UFRG — Unidirectional fibre reinforced grout as strengthening material for reinforced concrete structures more. The present study is part of an fungifofmes research project, where the main objective is to evaluate a strengthening solution for reinforced concrete structures using a small thickness jacketing in the compression side of the RC element The present study is part laues an extensive research project, where the main objective is to evaluate a strengthening solution for reinforced concrete structures using a small thickness jacketing in the compression side of the RC element with unidirectional fiber reinforced grout – UFRG.
For this purpose a high performance cementitious grout reinforced with continuous and unidirectional non woven fungitormes has been developed. It was expected that the use of these type of fibers allowed an optimization of its percentage and orientation.
The experimental campaign included a set of preliminary tests that allowed the design of the fiber reinforced grout, susta The windpower market has evolved and grown dramatically around the world. This, combined with the equipment evolution, has created new challenges to structural engineering both for onshore and offshore facilities.
The PrecastWind seminar dealt with wind power energy and, more specifically with the design and building of precast towers to support the wind turbines. It was intended to present a state of the art update on this technology. Among the participants in the PrecastWind were several national and foreign experts, namely: In many cases the effect of the impact or explosion has fungiformss the failure of a critical In many cases the effect of the impact or explosion has been the failure of a critical structural member at the perimeter of the building.
After the fungifodmes, the load supported by that member could not be redistributed and part or all of the structure has collapsed in a progressive manner. Progressive collapse is a relatively rare event, as it requires both an accidental action to cause local damage and a structure that lacks adequate continuity, ductility, and redundancy to prevent the spread of damage.
It is technically very difficult and economically prohibitive to design buildings for absolute safety. However it is possible to construct precast con Strengthening of reinforced concrete slabs using post-tensioning with anchorages by bonding funfiformes. Behavior of dissipating angles for rocking hybrid ductile concrete wall systems more. BiscaiaDuarte Fariaand A.
Punching of reinforced concrete slabs and experimental analysis and comparison with codes more. Seismic Behaviour of Limestone Masonry Buildings more. ABSTRACT Portugal has been exposed to cyclic strong seismic activity, with devastating human and material fungiforms, namely the earthquakes of, and The Azores Islands have also been subjected to several The Azores Islands have also been subjected to several earthquakes with a smaller time period.
The majority of these extreme events caused severe damages in buildings and other structures, that are not able de dissipate the seismic energy due to their fragile behaviour.
This paper refers the main structural limitations and the most important damage types of ancient limestone masonry buildings in the presence of earthquakes and, at the end, presents the research work undergoing at the FCT-UNL in cooperation with LNEC. This research is sponsored by some industrial companies and aims to evaluate several consolidation and structural strengthening systems for ancient limestone masonry buildings. Pull-out and push-in tests of bonded steel strands more. Magazine of Concrete Research.
The effect of the vertical component of prestress forces on the punching strength of flat slabs more. Nevertheless, smaller thicknesses near the slab-column connections, along with the superposition of high shear and Nevertheless, smaller thicknesses near the slab-column connections, along with the superposition of high shear and flexural stresses, arise the question of the slab capacity to resist punching.
The punching failure results from the superposition of shear and flexural stresses near the column, and is associated to the formation of a pyramidal plug of concrete which punches through the slab.
It is a local and brittle failure. The use of prestress can increase the punching capacity of flat slabs-column connections. This work presents the experimental analysis of flat slab specimens with tendons under punching. Nine slabs were tested using unbonded prestress with high strength steel tendons. The influences on the punching capacity of the vertical component of the prestress forces resulting from inclined tendons near the column and their distance to the column are analysed.
The in-plane compression force due to prestress was not applied to the slabs, in order to evaluate only the deviation force influence. This work aims to improve the lajees of the behaviour of prestressed flat slabs under punching load in order to properly evaluate the punching resistance of this kind of structures. Civil Engineering and Structures and Fire Engineering. The work fugiformes presented reports the experimental analysis of reduced scale flat slab specimens under punching.
It presents the results of experimental tests on three flat slabs without specific punching reinforcement, on eight slabs strengthened by introduction of new shear reinforcement and on five slabs strengthened with post-tensioning. Fungiforms limit state of punching in the fib FIP recommendations for the design of post-tensioned slabs and foundations more.
Civil Engineering and Structural Concrete. Post-punching behaviour of prestressed concrete flat slabs more. Experience shows that flat slab structures are very sensitive to progressive collapse, which may cause serious accidents if special detailing is Experience shows that flat slab structures are very sensitive to progressive collapse, which may cause serious accidents if special detailing is not provided.
Dimensionamento de lajes aligeiradas betonadas “in situ” – CORE
The post-punching behaviour of a column-supported slab is decisive in the progressive collapse development. This work presents the experimental research carried out to study the post-punching behaviour of prestressed concrete flat slabs. Six reduced-scale prestressed concrete flat slab models were tested. The tests were carried out in two different phases.
In the first phase the models were loaded up to failure by punching. Afterwards, the models were loaded again to study the post-punching behaviour changes caused by the presence of unbonded, prestressed tendons and the influences of their distance to the column. Radik, Ece Erdogmus, and Travis Schafer more.
Journal of Materials in Civil Engineering. Remember me on this computer.
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