Simulation of Temperatures and Stresses during Construction of a RCC Dam

Lacoma Aller, Luis María; Rodríguez Soler, Javier; Marti Rodriguez, Joaquin y Martinez Cutillas, Francisco J. (2012). Simulation of Temperatures and Stresses during Construction of a RCC Dam. En: "6th International Symposium on Roller Compacted Concrete (RCC) Dams", 23/10/2012 - 25/10/2012, Zaragoza. ISBN 9788489567182. pp. 1-10.

Descripción

Título: Simulation of Temperatures and Stresses during Construction of a RCC Dam
Autor/es:
  • Lacoma Aller, Luis María
  • Rodríguez Soler, Javier
  • Marti Rodriguez, Joaquin
  • Martinez Cutillas, Francisco J.
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 6th International Symposium on Roller Compacted Concrete (RCC) Dams
Fechas del Evento: 23/10/2012 - 25/10/2012
Lugar del Evento: Zaragoza
Título del Libro: 6th International symposium on roller compacted concrete RCC dams:proceedings , Zaragoza, Spain, 23-25 October 2012
Fecha: 2012
ISBN: 9788489567182
Materias:
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Mecánica de Medios Continuos y Teoría de Estructuras
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Se describen las variaciones de temperaturas y de tensiones durante la construcción de presas de hormigón compactado. The curing of concrete is an exothermic process. The heat of hydration generated induces temperature increases in the concrete, which will disappear in the long term by heat conduction in the concrete mass and thermal exchanges with the environment. The problem is of particularly interest for large concrete masses, as is the case of dams, because the time involved in the heat diffusion process grows with the square of the dimensions and a hotter dam interior implies the possibility of cracking the exposed surfaces of the dam. The Cuira dam, currently being built in Venezuela using roller compacted concrete, is a 134 m high, arch-gravity dam. In support of the design, different strategies were analysed, including various combinations of cooling of the water and the aggregate in order to achieve acceptable results. The calculations were conducted with Abaqus, taking into account all the necessary mechanical and thermal characteristics, as well as the relevant non-linearities. The analyses led to the conclusion that no cooling was required, even taking into account the stress state imposed by an early and rapid filling of the reservoir.

Más información

ID de Registro: 20843
Identificador DC: http://oa.upm.es/20843/
Identificador OAI: oai:oa.upm.es:20843
URL Oficial: http://www.meetandforum.net/RCC2012/
Depositado por: Memoria Investigacion
Depositado el: 11 Dic 2013 12:16
Ultima Modificación: 22 Sep 2014 11:21
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