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STRUCTURAL PERFORMANCE OF TWO TYPES OF WALL SLAB CONNECTION UNDER OUT-OF-PLANE LATERAL CYCLIC LOADING

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Author(s): AHMED ABDULRAZZAQ NASSER AL-AGHBARI | SITI HAWA HAMZAH | NOR HAYATI ABDUL HAMID | NURHANIZA ABDUL RAHMAN

Journal: Journal of Engineering Science and Technology
ISSN 1823-4690

Volume: 7;
Issue: 2;
Start page: 177;
Date: 2012;
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Keywords: Tunnel form system | Anchorage bracing connection | Cross-bracing connection | Lateral cyclic loading | Ductility | Energy absorption

ABSTRACT
Currently, most of the high-rise buildings in Malaysia are constructed using tunnel form system. However, this type of structural system is still questionable of its safety under ground motion. Thus, the main objective of this study is to test and compare the structural performance of two types of wall-slab connection namely cross and anchorage bracings under reversible quasi-static cyclic loading. Two identical sub-assemblage of wall-slab connections are designed, constructed and tested in heavy structural laboratory. A load actuator together with load cell was positioned horizontally at the upper part of the wall for applying the lateral cyclic load. The experimental result shows that the anchorage bracing connection has higher strength, higher ductility, better energy absorption and less structural damage as compared to cross-bracing connections. Based on this experiment, the ductility of anchorage bracing connection is m=6 which satisfies the requirement of ductility for seismic code of practice. Anchorage bracing connection can resist earthquake loading better than cross-bracing connections. Therefore, it is recommended to the construction industry to adopt this kind of design together with the detailing which consists of double layer of wire fabric at the connections. As a conclusion, the anchorage bracing connection has better seismic performance as compared to cross-bracing connection under lateral cyclic loading.
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