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An Experimental Study on the Structural Performance of Lightly Reinforced Concrete Frame Retrofitted with Concrete Block and Cast-In Place Infilled Wall  

Choi, Chang-Sik (한양대 건축대학 건축공학부)
Lee, Hye-Yeon (대진대 대학원)
Kim, Sun-Woo (충남대 대학원)
Yun, Hyun-Do (충남대 건축공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.9, no.2, 2005 , pp. 199-206 More about this Journal
Abstract
In many other countries framed structures with inadequate lateral strength and stiffness have been strengthened by providing reinforced concrete infilled wall. There is a general agreement among researchers those infilled walls have 3-5times greater lateral strength compared with bare frame. The main objective of this research is to investigate the behavior and strength of reinforced concrete frames infilled with concrete block and cast-in-place reinforced concrete panels used for strengthening the structure against seismic action. For this purpose three 1/3 scale, one-bay, one-story reinforced concrete infilled frames were tested under reversed cyclic loading simulating the seismic effect. The results indicate that infilled walls increase both strength and stiffness significantly under lateral loads. Especially Strength capacity and initial stiffness of CIP infilled wall increased 3.8 times and 6.6 times higher than lightly reinforced concrete frame.
Keywords
Infilled Wall; Concrete block; Cast-In-Place; Strengthening; Shear Wall;
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