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Punching of prestressed flat slabs: Experimental analysis, Ramos, A. M. P., and Lúcio V. J. G. , International Workshop on Punching Shear Capacity of RC Flat Slabs, Volume 57, Stockholm, p.441–448, (2000) Abstract

The experimental analysis of nine prestressed flat slab models under punching is described and the results are compared with the recommendations of EC2 and MC90. The tests were performed on specimens at a scale 1/3, prestressed with unbonded high strength steel. In the first set, the specimens (AR2 to AR5 and AR7) were only subjected to in-plane compression, to evaluate the effect of the in-plane forces on the punching resistance. The second set of tests (AR8 to AR11) intended to study the effect of the vertical component of the tendon forces near the column in the punching resistance. This work aims to improve the understanding of the behaviour of prestressed flat slabs under punching load and the evaluation of the punching resistance.

Comportamento Pós-Rotura de Lajes Fungiformes Pré Esforçadas, Ramos, António Pinho, and Lúcio Válter , Revista Portuguesa de Engenharia de Estruturas, Volume 1, Number Série II, p.5–14, (2007) Abstract

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Reparação e Reforço de Lajes Fungiformes ao Punçoamento, Ramos, António , IST-UTL, Lisbon, (1995) Abstract

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Análise Experimental de Técnicas de Reparação e Reforço ao Punçoamento, Ramos, A. M. P. e Lúcio, V. , 5º Encontro Nacional sobre Estruturas Pré-esforçadas, Porto, (1994) Abstract

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SEISMIC BEHAVIOR OF SLAB–COLUMN CONNECTIONS USING HIGH PERFORMANCE FIBER REINFORCED CONCRETES, Ramos, António, Isufi Brisid, and Marreiros Rui , American Concrete Institute, ACI Special Publication, Volume SP-357, p.123 – 138, (2023) Abstract
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Comportamento de Lajes Fungiformes Sujeitas a Acções Horizontais Cíclicas, Ramos, António Pinho , Construção Magazine, Issue 76, p.44-45, (2016)
Punching Research at Universidade Nova de Lisboa, a Ramos, Lúcio V., Faria D., and Inácio M. , Design Of Concrete Structures and Bridges Using Eurocodes, Bratislava, (2011) Abstract

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Punching behavior of slab-column connections with recycled coarse aggregate concrete, Ramos, António Pinho, Marchão Carla, Marreiros Rui, Domingues Manuel, and Cardoso Tainara , fib Symposium, p.2106 – 2115, (2025) Abstract
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HYBRID USE OF HPFRC IN SLAB – COLUMN CONNECTIONS UNDER CYCLIC LATERAL LOADING, Ramos, António Pinho, Isufi Brisid, Marreiros Rui, and Marchão Carla , fib Symposium, p.1880 – 1889, (2022) Abstract
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Safety on Punching of Prestressed Flat Slabs, Ramos, António, and Lúcio Valter , fib congress 2006, Naples, (2006) Abstract

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Post-punching behaviour of prestressed concrete flat slabs, Ramos, Pinho A., and Lúcio V. J. G. , Magazine of Concrete Research, Volume 60, Number 4, p.245–251, (2008) AbstractWebsite

The progressive collapse of structures generally results in the loss of human lives. Experience shows that flat slab structures are very sensitive to progressive collapse, which may cause serious accidents if special detailing is not provided. 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.

Project RecycleSlab - Structural Behaviour of Recycled Aggregate Reinforced Concrete Flat Slabs with Drop Panels Under Seismic and Cyclic Actions, Ramos, António, Marchão Carla, Coronelli Dario, Faria Duarte, Fiorillo Fausta, Rosati Gianpaolo, Halvonik Jaroslav, de Almeida João Pacheco, de Brito Jorge, Martinelli Luca, Lamperti Marco, Ruiz Miguel Fernandez, Lavagna Monica, Vollum Robert, and Marreiros Rui , Lecture Notes in Civil Engineering, Volume 718 LNCE, p.206 – 216, (2025) AbstractWebsite
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Punçoamento em Lajes Fungiformes Pré-Esforçadas, Ramos, António , IST-UTL, Lisbon, (2003) Abstract

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Reforço de Lajes Fungiformes ao Punçoamento com Perfis Metálicos, Ramos, A. M. P. e Lúcio, V. , 6º Encontro Nacional sobre Estruturas Pré-esforçadas, Lisbon, (1996) Abstract

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Seismic Performance of Strengthened Slab-Column Connections in a Full-Scale Test, Ramos, António Pinho, Isufi Brisid, Marreiros Rui, Coronelli Dario, Netti Teresa, Lamperti Tornaghi Marco, Tsionis Georgios, and Muttoni Aurelio , Journal of Earthquake Engineering, Volume 27, Number 9, p.2299 – 2318, (2023) AbstractWebsite
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Punching of flat slabs with in-plane forces, Ramos, Pinho A., Lúcio Válter J. G., and Regan Paul E. , Engineering Structures, Volume 33, Number 3, p.894–902, (2011) AbstractWebsite

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Test set-up effect on the punching behaviour of slabcolumn connections: A numerical and theoretical investigation, de Paula Randi, Ricardo, Díaz Rafael Sanabria, Trautwein Leandro Mouta, and Ramos António Pinho , fib Symposium, p.2822 – 2831, (2025) Abstract
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On the behavior of flat slabs with asymmetric openings near columns: A hypothesis based on numerical simulations and design code-based analytical models, de Paula Randi, Ricardo, Marques Marília Gonçalves, Trautwein Leandro Mouta, and Ramos António Pinho , Structural Concrete, (2025) AbstractWebsite
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Análise Numérica do Punçoamento em Lajes Fungiformes Pré-Esforçadas, e Nuno Mamede, Duarte Faria António Ramos , 5ªs Jornadas Portuguesas de Engenharia de Estruturas, Encontro Nacional de Betão Estrutural 2014, 9º Congresso Nacional de Sismologia e Engenharia Sísmica, Lisbon, (2014) Abstract

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A Minimization Prodecure for the Determination of SFRC Tensile Behaviour, Nuno Gouveia, Ana Luísa Custódio, Duarte Faria António Ramos , EngOpt 2014, 4th International Conference on Engineering Optimization, Lisbon, (2014) Abstract

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Deformation capacity evaluation for flat slab seismic design, Muttoni, A., Coronelli D., Lamperti Tornaghi M., Martinelli L., Pascu I. R., Pinho Ramos A., Tsionis G., Bamonte P., Isufi B., and Setiawan A. , Bulletin of Earthquake Engineering, Volume 20, Number 3, p.1619 – 1654, (2022) AbstractWebsite
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Rational Use of High-Strength Concrete in Flat Slab- Column Connections under Seismic Loading, and Micael Inácio, Brisid Isufi, Massimo Lapi António Pinho Ramos , Volume 117, Issue 6, (2020) Abstract

High-strength concrete (HSC) slab-column connections with relatively low concrete strengths compared to today’s capabilities have been tested under seismic-type loading in the past. Herein, the hybrid use of HSC with compressive strength approximately 120 MPa and normal-strength concrete (NSC) is investigated through three reversed horizontal cyclic-loading tests with different geometries of the HSC region and a reference NSC specimen. The results show that HSC applied in the vicinity of the column can significantly enhance the seismic performance of slab-column connections. The best result in terms of drift capacity and economic use of HSC was achieved in the case of full-depth HSC extended from the column’s face up to 2.5 times the effective depth. Drift ratios up to 3.0% were achieved. A comparison with previous tests showed that the hybrid use of HSC and NSC can achieve similar results to the provision of punching shear reinforcement.

Punçoamento em Lajes Fungiformes de Betão de Elevada Resistência – Estudo Experimental, e Micael Inácio, Duarte Faria, Válter Lúcio António Ramos , 5ªs Jornadas Portuguesas de Engenharia de Estruturas, Encontro Nacional de Betão Estrutural 2014, 9º Congresso Nacional de Sismologia e Engenharia Sísmica, Lisbon, (2014) Abstract

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Punching of High Strength Concrete Flat Slabs - Experimental Investigation, Micael Inácio, António Ramos, Válter Lúcio, and Faria Duarte , fib symposium Tel Aviv 2013, Tel Aviv, p.377–380, (2013) Abstract

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FE modelling of RC flat slabs with openings under vertical load and cyclic horizontal load, Menichini, Giovanni, Lapi Massimo, Ramos Antonio, and Orlando Maurizio , fib Symposium, p.3006 – 3016, (2025) Abstract
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