Global and local demand limits of thin reinforced concrete structural wall building systems

Carlos A. Arteta, Carlos Blandon, Ricardo Leon Bonett Diaz, Julian Carrillo

Resultado de la investigación: Contribución a una conferenciaPaper

Resumen

Industrialized construction system used in some Latin American countries are build based on elements which are of special interest because the geometry of their cross section, and layout of longitudinal reinforcement may facilitate the triggering of flexural-compression failures. This is so because of the excessive compressive demand on a thin-poorly-detailed web that arises due to seismic action. Given the large unsupported length of the web close to the critical section at the base, the extreme portions of these elements are also prone to lateral (out-of-plane) instability when subjected to cycling loading. This paper presents and analyzes a database of reinforced concrete thin-wall buildings representative of building archetypes in some countries in the southern hemisphere of the Americas. Variables of interest such as wall area index, fundamental period, flanged-wall cross section geometry, wall aspect ratio, reinforcing steel detailing, axial load ratio, building period, neutral axis depth, shear span ratio, among others, are analyzed in detailed. A drift coupling factor is introduced to evaluate the impact of coupling of the surrounding system on individual walls. An archetype wall representative of the buildings in the database is selected by means of a multivariate statistical analysis. This prototype will serve as subject of laboratory testing. The paper also presents and discusses the results of a reversed-cyclic-loading experiments on a rectangular and T shape reinforced concrete thin-wall with aspect ratio of 3 and 3.7. The specimens are representative of the construction practice in intermediate seismic hazard areas in Colombia. Results suggest that this type of elements have limited ductility capacity, inferior to the expected behavior promoted by the building codes. Global and local deformation parameters from experimental data are discussed.
Idioma originalEspañol (Colombia)
EstadoPublicada - 9 ene 2017
Evento16th World Conference on Earthquake Engineering - Santiago , Chile
Duración: 9 ene 201713 ene 2017

Conferencia

Conferencia16th World Conference on Earthquake Engineering
Título abreviado16 WCEE
PaísChile
CiudadSantiago
Período9/01/1713/01/17

Palabras clave

  • building database
  • reinforced concrete
  • thin flanged wall
  • reversed-cyclic loading

Citar esto

Arteta, C. A., Blandon, C., Bonett Diaz, R. L., & Carrillo, J. (2017). Global and local demand limits of thin reinforced concrete structural wall building systems. Papel presentado en 16th World Conference on Earthquake Engineering, Santiago , Chile.