| Title |
Shear Strength of Vertical Joints in Precast Concrete Panel with Shear Key |
| Authors |
Lee, Sang-Sup ; Park, Keum-Sung ; Bae, Kyu-Woong |
| DOI |
https://doi.org/10.5659/JAIK_SC.2019.35.9.151 |
| Keywords |
Shear Key; Loop Rebar; Lacer Rebar; Vertical Joint; Precast Concrete Panel |
| Abstract |
A concrete core is used widely as lateral stability systems in high-rise modular buildings. As an alternative to traditional cast in-situ core, the
precast concrete(PC) method can accelerate the construction of reinforced concrete cores. A core composed of precast elements differs from a
in-situ core in having connections between the precast elements. The typical vertical connection between PC panels is consisted of shear
keys, loop bars, lacer bars and grout. In this study, the effect of vertical connection components on shear strength is investigated
experimentally. The test results show that the contribution to the shear strength is greater in order of grout strength, shear keys, lacer bars
and loop bars. In addition, the numerical models to estimate the shear strength according to two crack patterns in the vertical joint of the
PC panels are derived. The feasibility of the numerical models is evaluated by comparing the estimated shear strength and the test results. |