|主題||SHEAR RESISTANCE OF VARIOUS CONNECTION USED FOR PRECAST CONCRETE LOAD-BEARING SHEAR WALL PANELS|
|筆頭著者||Sami H. RIZKALLA|
|連名者1||Reynaud L. SERRETTE|
|連名者2||J. S. HEUVEL|
Because of the little possibility to have an earthquake in the north American area, precast high-rise structures have become very popular due to the high quality control of the prefabricated panels that can be achieved in the manufacturing plant and the savings in construction time. The precast concrete panels are assembled and tied together at the construction site with a minimum of interference from the weather conditions. The precast concrete panels are assembled and tied together at the construction site with a minimum of interference from the weather conditions. The behavior of connections used in wall panel construction greatly influences the structural integrity of the entire structure. This paper discusses the results of two phases of experimental work undertaken to examine the behavior of six connection configurations that are typically used for precast concrete load-bearing shear wall panels. The first phase (1) included four types of connections: a reinforcement and dry-packed connections with two types of mechanical shear connectors, in addition to the continuity bars. The second phase (2) included two different types of the dry-packed multiple shear key configurations. All the connections were subjected to monotonic shear load up to failure. The results of the experimental program ware used to calibrate a mathematical model introduced to predict the strength of these connections.
The behavior of the various connections typically used for precast concrete shear wall panels is determined. Based on the test results, it was found that the behavior is mainly dependent on the following basic parameters: (1) The tensile strength of the weaker material within the connection. (2) The bond strength of the dry pack grout. (3) The load level normal to the connection. (4) Dowel action of the continuity bars and the shear strength of the mechanical shear connectors. (5) The presence of the multiple shear keys. The proposed mathematical model introduced for the plain surface dry-pack connections was found to be in good agreement with the measured values.