Abstract
An experimental study of shear behaviour of reinforced concrete members with solid circular cross sections is presented. The test variables were ratio of longitudinal reinforcement and type of stirrups. The test was carried out on nine beams. Three beams were designed without stirrups, three with closed hoop stirrups, and the other with spiral stirrups. All tested beams were subjected to two-point monotonic loads. The test results showed that all beams without stirrups failed due to the shear force. Beams with hoop or spiral stirrups failed in flexural mode. The flexural capacity of beams with hoops and spiral stirrups was similar but the beams with spiral stirrups showed a slightly higher ductility. Analytical predictions showed that the chosen numerical model predicted the test result with good accuracy.
Highlights
Up until December 14, 2018- before the tsunami disaster in the Selat Sunda, Badan Nasional Penanggulangan Bencana (BNPB) had recorded 2,436 natural disasters in Indonesia [1]
The shear capacity of circular cross sectional reinforced concrete elements is different from other cross sections
The circular cross sectional shear capacity of reinforced concrete structural elements has been investigated by several previous researchers before [3-12]
Summary
Up until December 14, 2018- before the tsunami disaster in the Selat Sunda, Badan Nasional Penanggulangan Bencana (BNPB) had recorded 2,436 natural disasters in Indonesia [1]. Experience of previous earthquakes in Indonesia has shown that buildings frequently fail due to damage in the beams and columns of the structure. Circular cross sectional reinforced concrete elements are frequently used civil engineering construction, for instance, as columns in reinforced concrete buildings, as pile foundations, and bridge piers [4,5]. The shear capacity of circular cross sectional reinforced concrete elements is different from other cross sections. The circular cross sectional shear capacity of reinforced concrete structural elements has been investigated by several previous researchers before [3-12]. Turmo et al [5] developed an analogy for shear in circular concrete truss elements with hollow and solid cross-section. This study builds on and develops this research by investigating the shear experienced by circular cross-sectional beams
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