Quantitative assessment of dissipated energy from structural components under seismic ground motions for a low-rise RC framed building | |
| Author | Neupane, Basanta |
| Call Number | AIT Thesis no.ST-21-20 |
| Subject(s) | Reinforced concrete construction Energy dissipation Structural frames Earthquake resistant design |
| 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-21-20 |
| Abstract | Earthquake imparts energy into the structure during vibration. Buildings tend to move in forwarding and backward motion along with it, supplying input energy into the system. To protect the structure from collapse and remain functional immediately after such hazardous events it should be designed in such a way that the inherited properties of the materials are utilized so that the structure survives several cycles of inelastic deformation. Instead of using responses like base shear and peak displacement as an equivalent design parameter for force-based design and displacement-based design, a new design method termed the energy-based design (EBD) method has evolved which uses hysteretic energy as a design parameter in design. The benefit of EBD over the traditional 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 for a structure to remain stable during ground shaking. A five-story low-rise RC framed building with a moment-resisting frame structural system was selected for this 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 performed for preliminary member sizing and reinforcement details. A nonlinear model was developed in PERFORM 3D following LATBSDC 2020 guidelines and NLTHA was conducted for seven pairs of seismic horizontal ground motions. The input energy was calculated using PERFORM 3D; the distribution of HE among the story and the structural components (beam, column) and story-wise distribution isstudied explicitly in this research. Analysis results revealed that the beam is the most dominant in energy dissipation followed by the column. HE of beams and columns were correlated with deformations separately and concluded that they are strongly correlated. The quantitative assessment of HE illustrates that it can be a useful damage indicator. |
| Year | 2021 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-21-20 |
| 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) | Punchet Thammarak;Raktipong Sahamitmongkol; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2021 |