Design of viscoelastic cladding damper system for 5 Story, 2D steel moment frame | |
| Author | Gyeltshen, Sonam |
| Call Number | AIT Caps. Proj. no.CIE-18-03 |
| Subject(s) | Steel framing (Building) Viscoelastic materials Earthquake resistant design Damping (Mechanics) |
| Note | A capstone project report submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Engineering Civil And Infrastructure Engineering |
| Publisher | Asian Institute of Technology |
| Series Statement | Caps. Proj. ; no. CIE-18-03 |
| Abstract | As per conventional building codes and current practices, the architectural/cladding panels are considered as masses in the design and their interaction with structural frame is neglected. However, cladding panels are found to add lateral stiffness and improve overall response of the building to wind and earthquakes. Moreover, current buildings use separate bracing sys- tems to reduce inter-story drift and displacement but they make arrangement of architectural components difficult by occupying space. The cladding panels are isolated from structural frame in current practices to avoid damages to them during earthquake since their collapse isa threat to pedestrians' lives and panel replacement is expensive. Therefore, the study proposed to consider cladding-frame interaction and design accordingly. An Energy Dissipating Cladding System (EDCS) is proposed where it functions both as bracing and a source of seismic energy dissipation without demanding any inelastic action from structural members. The EDCS proposed in the study has two major components: precast concrete panel and viscoelastic damper (VED). The stiffness of VED contribute in bracing with the stiffness of precast concrete panel and at the same time, VED is also the energy dissipater. The study numerically investigated the possibility of retrofitting a building by comparing seismic response and member forces of the building with different number of EDCS installed and the diagonally braced VED. The study also looked into design of an optimal VED stiffness based on structural demand to control drift within I % so that the risk of damages to conventional cladding connections could be minimized. Moreover, the study investigated the sensitivity of designed optimal VED stiffness incorporated into EDCS and hysteresis loops of few selective VEDs in the frame. |
| Year | 2018 |
| Corresponding Series Added Entry | Asian Institute of Technology. Caps. Proj. ; no. CIE-18-03 |
| Type | Capstone Project |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Civil and Infrastructure Engineering (CIE) |
| Chairperson(s) | Hathairat Maneetes; |
| Examination Committee(s) | Punchet Thammarak ;Tian Boon Soh; |
| Degree | Capstone Project (B.Sc.)-Asian Institute of Technology, 2018 |