Quantitative assessment of dissipated energy from the structural component under seismic ground motions for mid rise building | |
| Author | Poudel, Jhabindra |
| Call Number | AIT Thesis no.ST-21-10 |
| Subject(s) | Earthquake resistant design Buildings--Earthquake effects |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-21-10 |
| Abstract | Earthquake gives impulse at the base of the building during shaking. Buildings tend to move along with it, supplying input energy into the building. To save the building from collapse it can be designed in such a way that the real properties of the materials can be utilized so that the buildings can survive from the several cycles of inelastic behavior. Instead of using base shear and maximum displacement as an equivalent design parameter for FBD and DBD, another new method called the energy-based design (EBD) method is evolved as it uses HE as a design parameter. The advantage of EBD over the conventional code-based design is that it implicitly considers the frequency content and duration of ground motions. The main concept of EBD is that the energy dissipation capacity should be greater than the energy supplied (demand) to the structural members. The 13th story mid-rise building with a dual structural system was selected for the study. A linear finite element model was developed in ETABS, The RSA was conducted for the SLE response spectrum, and a code-based design was done to evaluate the preliminary member sizes and reinforcement details. The nonlinear model was developed in Perform 3D by following LATBSDC 2020 and NLTHA was conducted for 11 sets of horizontal ground motions. The input energy was evaluated from Perform 3D; the distribution of HE among the story and the structural components (beam, column, shear wall & link beam) and story-wise distribution are studied in this thesis. Analysis results revealed that beam is the most dominant in dissipation of energy which is followed by the shear wall, coupling beam & column has very low dissipation. HE of beams was correlated with the deformation and concluded that it is strongly correlated with the deformation of beam elements. The quantitative assessment of HE illustrates that it can be a good damage indicator. |
| Year | 2021 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-21-10 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Pennung Warnitchai;Anwar, Naveed (Co-Chairperson); |
| Examination Committee(s) | Thanakorn Pheeraphan;Punchet Thammarak; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship;CSI Fellowship, Self-Financing; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2021 |