Seismic behavior of semi-precast concrete shear walls

Karimi Zindashti, Golnesa
Successful performance of well-designed and constructed precast concrete elements in earthquake resistant structures, has led to widespread use of these kind of elements all around the world. Fast construction, high quality of precast concrete units and high durability are just a few advantages of these elements to be favored over cast-in-situ structures by engineers, and thus to cause seeking the ways to minimize their disadvantages. The main disadvantage of precast concrete elements in construction is the difficult detailing of the connection between the structural elements in order to ensure the integrity of the structure. Combination of precast components with other construction materials, particularly cast-in-place concrete (hybrid system) is one of the systems overcoming mentioned problem. In this study double wall (sandwich wall panel), as a hybrid system, which consists of two precast reinforced concrete layers encasing a cast-in-place concrete layer, and its seismic behavior as a shear wall have been studied. Four double walls, consisting two rectangular, one U-shaped, and one T-shaped section walls, were already tested as full scale specimens subjected to cyclic horizontal load in Middle East Technical University (2013). A series of spread-sheets were developed in order to construct the moment-curvature relation of the critical section of the walls. Accordingly, response of each element was calculated and compared with the results derived from the experimental program. After verifying a good agreement between the experimental observations and the analytical model, the performance of walls were evaluated according to ASCE/SEI-41, Eurocode 8, and Turkish Earthquake Code 2007. Afterwards, seismic analysis, design and detailing of a mid-rise double wall-incorporated building were performed and finally, the performance of the building was assessed according to TEC2007.


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Citation Formats
G. Karimi Zindashti, “Seismic behavior of semi-precast concrete shear walls,” M.S. - Master of Science, Middle East Technical University, 2016.