| 英文摘要 |
Post-tensioned structural systems combine the properties of pretressed strands and anticipated energy dissipating devices. It is a key feature that the high-strength strands enable the structural systems to self-center after earthquakes. Added energy dissipating devices in the beam-to-column joint can produce hysteretic energy dissipating effects in the structures. Therefore, utilizing the properties of self-centering and hysteretic energy dissipation, it could result in reduced transient and residual displacements during and after an earthquake. This structural system has excellent ability of deformation, but it inherently possesses lower hysteretic dissipating energy. This characteristic probably results in more significant vibration than tranditional structural system during shake happens. Also, when a structure is subjected to lateral force, openings between beams and columns are be created and elongate the structure’s dimension. The openings not only potentially destroy the compatibility of deformation but also decrease service function for traditional RC slab. Based on those reasons the research project attempts to propose feasible energy dissipating devices and solutions for construction and design problems of RC slab. This year, which is the second stage, some issues are focused on developing of the energy dissipating devices in the post-tensioned beam-to-column joints based on research results of the first stage. The devices using in post-tensioned RC, steel CFT and RCS moment resisting frames are included.. In addition to the experimental investigations, analytical approaches were employed to grasp the earthquake responses of the structural components and systems. Experimental results confirm the post-tensioned beam-to-column joints have probability of re-centing and large space of progressing hysteretic energy dissipating. |
本站僅提供期刊文獻檢索。
