1 AIT Asian Institute of Technology

Cam-Grip energy dissipating device for hybrid structural rocking wall

AuthorMay Thazin Khine
Call NumberAIT Thesis no.ST-16-04
Subject(s)Precast concrete construction

NoteA thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology
PublisherAsian Institute of Technology
Series StatementThesis ; no. ST-16-04
AbstractIn modern society, the seismic resistant design of structure targeting life safety and control the severity of damage in small or moderate earthquake are not enough. The new era design should resist a major level of earthquake without collapse but possibly with some structural and nonstructural damage. To meet this target, the structure should have enough ductility capacity to perform under inelastic range. In monolithic ductile connections, inelastic formation has been inevitably damage to structure. Later, alternative economical high-performance low-damage system which is known as hybrid system was developed. In this system post-tension tendon is used together with mild steel therefore post-tension tendon provide self-centering action and mild steel provide energy dissipation action. The general concept of a post-tensioned rocking system is to activate a “controlled rocking” motion between two structural members (beam-column, column-foundation or wall-foundation). The energy dissipating devices can be mainly used as two types: internal dissipaters or external dissipaters in rocking system. In this experiment, cam-grip energy dissipating device was used as external energy dissipaters in hybrid structural wooden wall test. Cam-grip energy dissipating device applies friction-gripping technique. Friction coefficient (the ratio of vertical to horizontal force) between cams and steel core is important in CFD and it is set as 0.2 to prevent any slippage between cams and steel core. As CFD device resists no compression force, no uplift force will be applied to the wall. Therefore, unlike other energy dissipating device, the CFD device always provide full self-centering behavior to the rocking wall system.
Year2016
Corresponding Series Added EntryAsian Institute of Technology. Thesis ; no. ST-16-04
TypeThesis
SchoolSchool of Engineering and Technology (SET)
DepartmentDepartment of Civil and Infrastucture Engineering (DCIE)
Academic Program/FoSStructural Engineering (STE) /Former Name = Structural Engineering and Construction (ST)
Chairperson(s)Punchet Thammarak;
Examination Committee(s)Pennung WarnitchaiThanakorn Pheeraphan;
Scholarship Donor(s)UNOCAL Myanmar Offshore Co.Ltd, Chevron;
DegreeThesis (M. Eng.) - Asian Institute of Technology, 2016


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