Shear capacity of rectangular RC beams with continuous spiral shear reinforcement

Matthias Wild, Oliver Fischer

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The use of continuous spiral shear reinforcement in Reinforced Concrete (RC) elements can substantially increase the load bearing capacity and the ductility of structural elements. Also it is generally accepted that total seismic response of structural elements will be improved by the use of spiral reinforcement. Up to now spiral reinforcement is mostly used in concrete columns with circular cross section. Advantages by using continuous spiral shear reinforcement in rectangular reinforced concrete beams under shear loading are also expected. In this study the behavior of continuous spiral transversal reinforcement as shear reinforcement in rectangular RC beams instead of conventional independent stirrups is experimentally investigated. The test program consists of three point shear tests with static loading. The load was applied with a shear span ratio a/d of 3.0. All specimen of the test program had the same volume of shear reinforcement. In the tests three different shapes of spiral shear reinforcement were used. The specimen were loaded up to failure and compared to the performance of a reference beam with common stirrups. To get detailed information about failure behavior and crack development an optical 3-D measurement system was used. In all tests could be seen that the use of continuous spirals leads to an increase of shear capacity and ductility in comparison to beams with stirrups.

Original languageEnglish
Title of host publicationISEC 2013 - 7th International Structural Engineering and Construction Conference
Subtitle of host publicationNew Developments in Structural Engineering and Construction
EditorsSiamak Yazdani, Amarjit Singh
PublisherResearch Publishing Services
Pages367-372
Number of pages6
ISBN (Electronic)9810753551, 9789810753559
DOIs
StatePublished - 2013
Event7th International Structural Engineering and Construction Conference: New Developments in Structural Engineering and Construction, ISEC 2013 - Honolulu, United States
Duration: 18 Jun 201323 Jun 2013

Publication series

NameISEC 2013 - 7th International Structural Engineering and Construction Conference: New Developments in Structural Engineering and Construction

Conference

Conference7th International Structural Engineering and Construction Conference: New Developments in Structural Engineering and Construction, ISEC 2013
Country/TerritoryUnited States
CityHonolulu
Period18/06/1323/06/13

Keywords

  • Ductility
  • Reinforced concrete beams
  • Shear capacity
  • Shear reinforcement
  • Spiral reinforcement
  • Testing

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