Análisis de conexiones con pernos en hormigones de ultra-alto desempeño

Autores/as

DOI:

https://doi.org/10.21501/21454086.3715

Palabras clave:

Modelo analítico, Distancias a los bordes, Concentraciones de tensión, Hormigón, Conexiones, Modelo de predicción, Propiedades elásticas.

Resumen

El hormigón de ultra-alto desempeño (UHPC) es un material compuesto con una notable capacidad de autocompactación y una alta resistencia a la compresión. Actualmente, la construcción de prefabricados en UHPC, debido a sus propiedades excepcionales, es considerada como una opción interesante en los proyectos de ingeniería civil. El desarrollo de métodos prácticos y confiables para el diseño de conexiones con pernos de elementos en UHPC ha sido considerado como un factor crucial en futuros proyectos de construcción. En este artículo, se estudian las concentraciones de tensión y los modos de falla frágiles en conexiones con pernos de paneles UHPC. Los resultados experimentales son comparados con una solución analítica que estima las concentraciones de tensión usando las propiedades elásticas de los materiales anisotrópicos y la geometría de las conexiones. Se analizan la influencia de la distancia al borde y de las propiedades elásticas de las placas UHPC en el desarrollo de fallas en conexiones con pernos. La solución analítica propuesta en esta investigación considera ecuaciones de forma cerrada que pueden ser usadas para evaluar las concentraciones de tensión en la conexión. Los resultados de laboratorio en conexiones con pernos de paneles UHPC se ajustan a las predicciones del modelo analítico. Un modelo analítico teórico es sin duda un precursor para cualquier estudio experimental o numérico de conexiones con pernos de elementos de hormigón de ultra-alto desempeño.

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Biografía del autor/a

César Echavarría, Ph.D. Cesar Echavarria Associate Professor Faculty of Architecture School of Construction Universidad Nacional de Colombia Calle 59A No 63-20 Bloque 24 Medellin 050010 COLOMBIA

César Echavarría, received the BS degree in Civil Engineering in 1995 from the Universidad Nacional de Colombia Medellín Colombia, both the MS degree in Timber Structures in 2001 and the PhD degree in Sciences in 2004 from the École Polytechnique Fédérale de Lausanne Switzerland. From 1995 to 1999, he worked for consulting companies within the Civil Engineering sector and since 2007 has been working for the Universidad Nacional de Colombia. Currently, he is Associate Professor in the Faculty of Architecture, Universidad Nacional de Colombia. His research interests include: composite materials, analytical modeling of joints, timber structures and retrofit of structures.
ORCID: 0000-0002-2885-1945

Hernán Cañola, Institución Universitaria Colegio Mayor de Antioquia

Hernán Darío Cañola, received both the BS degree in Architecture in 2010 and the MS degree in Building Construction in 2016 from the Universidad Nacional de Colombia Medellín Colombia. Since 2010 he has been working for consulting companies within the Civil Engineering sector. Currently, he is Professor in the Faculty of Architecture, Institución Universitaria Colegio Mayor de Antioquia. His research interests include: composite materials, timber structures and retrofit of structures.
ORCID: 0000-0002-0488-5817

Wilmar Echeverri, Centro Argos para la Innovación

Wilmar Echeverri received the BS degree in Civil Engineering and the MS degree in Building Construction from the Universidad Nacional de Colombia. He has participated in the LIF program of the Royal Academy of Engineering in London. He was lecturer and he has been working for 16 years in Cementos Argos company, where he is currently working as manager of research and development in concrete construction.

ORCID: 0000-0002-9718-4701

Referencias

Maya LF, Zanuy C, Albajar L, Lopez C, Portabella J. Experimental assessment of connections for precast concrete frames using ultra high performance fiber reinforced concrete. Construction and Building Materials 2013; 48: 173–186. https://doi.org/10.1016/j.conbuildmat.2013.07.002.

Collings TA, Beauchamp MJ. Bearing deflection behaviour of a loaded hole in CFRP. Composites 1984; 15: 33-38. https://doi.org/10.1016/0010-4361(84)90958-3.

Girão Coelho AM, Mottram JT. A review of the behaviour and analysis of bolted connections and joints in pultruded fiber reinforced polymers. Materials & Design 2015; 74: 86–107. https://doi.org/10.1016/j.matdes.2015.02.011.

Hong SG, Chung SH. Experimental study on the behavior of single bolted joints for UHPC panels. IABSE Symposium Report 2015; 105: 1530-1537.

Lee YG, Choi E, Yoon SJ. Effect of geometric parameters on the mechanical behavior of PFRP single bolted connection. Composites Part B: Engineering 2015; 75: 1–10.

Okutan B. The effects of geometric parameters on the failure strength for pin-loaded multi-directional fiber-glass reinforced epoxy laminate. Composites Part B 2002; 33: 567-578. https://doi.org/10.1016/S1359-8368(02)00054-9.

Quinn WJ, Matthews FL. The effect of stacking sequence on the pin-bearing strength in glass fiber reinforced plastic. Journal of Composite Materials 1977; 11: 139-145. https://doi.org/10.1177/002199837701100202.

Wong CM, Matthews FL. A finite element analysis of single and two-hole bolted joints in fiber reinforced plastic. Journal of Composite Materials 1981; 15: 481-491. https://doi.org/10.1177/002199838101500506.

Zhang K, Ueng C. Stresses around a pin-loaded hole in orthotropic plates with arbitrary loading direction. Composite Structures 1985; 3: 119-143. https://doi.org/10.1016/0263-8223(85)90040-6.

Zou X, Wang J. Experimental study on joints and flexural behavior of FRP truss-UHPC hybrid bridge. Composite Structures 2018; 203: 414–424. https://doi.org/10.1016/j.compstruct.2018.06.118.

Koord J, Stüvenc JL, Petersen E, Völkerink O, Hühne C. Investigation of exact analytical solutions for circular notched composite laminates under tensile loading. Composite Structures 2020; 243: 112180.

https://doi.org/10.1016/j.compstruct.2020.112180.

Echavarría C, Salenikovich A. Analytical model for predicting brittle failures of bolted timber joints. Materials and Structures 2009; 42: 867–875. https://doi.org/10.1617/s11527-008-9428-0.

Hammoud H, Naaman AE. Ferrocement bolted shear joints: failure modes and strength prediction. Cement and Concrete Composites 1998; 20: 13-29. https://doi.org/10.1016/S0958-9465(97)87389-1.

Mansur MA, Tan KL, Naaman AE. Strength of bolted moment connections in ferrocement construction. Cement and Concrete Composites 2010; 32: 532–543. https://doi.org/10.1016/j.cemconcomp.2010.04.001.

Kwon Y, Chung S, Hong S. Strength and behavior of bolted ultra-high performance concrete panel joint with geometric parameter. Journal of Applied Mechanical Engineering 2017; 6: 261. https://doi.org/10.4172/2168-9873.1000261.

Camacho E, Serna P, López JA. UHPFRC bolted joints: failure modes of a new simple connection system. High Performance Fiber Reinforced Cement Composites RILEM 2012; 6: 421-428.

Echavarría C. Analyse d’une plaque orthotrope avec trou: Application aux assemblages en bois. Ph.D. thesis N° 2947, Swiss Federal Institute of Technology Lausanne EPFL, Switzerland 2004.

De Jong T. Stresses around pin-loaded holes in elastically orthotropic or isotropic plates. Journal of Composite Materials 1977; 11: 313-331. https://doi.org/10.1177/002199837701100306.

Bickley W. The distribution of stress round a circular hole in a plate. Philosophical Transactions of the Royal Society of London. Series A, Containing Papers of a Mathematical or Physical Character 1928; 227: 383-415. https://doi.org/10.1098/rsta.1928.0010.

Graybeal B, Florent B. Development of direct tension test method for ultra-high-performance fiber-reinforced concrete. ACI Materials Journal 2013; 110: 177-186.

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Publicado

03/16/2021

Cómo citar

Echavarría, C., Cañola, H., & Echeverri, W. (2021). Análisis de conexiones con pernos en hormigones de ultra-alto desempeño. Lámpsakos (revista Descontinuada), (24), 15–22. https://doi.org/10.21501/21454086.3715

Número

Sección

Artículos Investigación Científica y Tecnológica