时间：2015年11月30日 上午10:00
地点：地坤楼409
报告人：Thomas Kang
主持人：肖岩 教授
题目：Development, Verification and Application of a New Unbonded Post-Tensioned Anchor for the In-situ Building Structures
Thomas Kang,，国立首尔大学(Seoul National University)建筑与建筑工程学院副教授。博士毕业于加利福尼亚大学洛杉矶分校，并获得韩国国立首尔大学与美国密歇根州立大学(Michigan State University)硕士学位。曾任美国俄克拉荷马大学(University of Oklahoma)土木工程助理教授。已发表论文著作70余篇，为American Concrete Institute(ACI)和Post-Tensioning Institute(PTI)协会会员。曾获ACI最有价值的论文奖和PTI最有价值技术论文奖。
报告内容简介：An unbonded post-tensioned (PT) anchor for a 15.2 mm diameter 7-wire strand was developed by Prof. Kang’s research team at Seoul National University based on finite element analysis and experimental verification. As part of the experimental verification of structural performance, static load tests and load transfer tests were conducted following the Korean Specifications, KCI-PS101. The static load tests and additional strand tensile tests confirmed that the developed anchor had a capacity more than nominal tensile strength of a 7-wire strand without any damage or deterioration. According to the result of load transfer tests, specimens with no additional reinforcing bars sustained at least 1.6 times the nominal tensile strength of the strand. This seminar will present such a performance verification process conducted through static load and load transfers tests, as well as the development process. The developed anchors were then used as fixed end anchorage in monolithically cast beam-column joints of special moment frames. Both roof level and inter-story level PT connection subassemblies were tested under reversed cyclic deformations. The test results showed that seismic performance of the connections with developed anchors was excellent in terms of every measurable seismic indicators.