Development of modal hysteretic model for the seismic response analysis of tall buildings with RC shear walls | |
| Author | Pandey, Sudan |
| Call Number | AIT Thesis no.ST-17-22 |
| Subject(s) | Tall buildings--Earthquake effects Shear wall Buildings, Reinforced concrete--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-17-22 |
| Abstract | Response spectrum method fails to approximate the inelastic demand for the structures having higher mode effects and different modes going to different level of nonlinearity. One of the modified approach for the standard RSA has been recently tested which is the combination of two main approach; UMRHA and Equivalent Linearization. In this study modal hysteretic behavior of high rise RC core wall buildings were studied and new modal hysteretic model to represent the modal nonlinear SDOF system was developed. The accuracy of proposed model was validated using different loading protocols and using UMRHA procedures to predict the building nonlinear responses. The comparison of flag shape model and modified flag shape model was done using both hysteretic model to predict total nonlinear response. It was found out that for the majority of ground motions shear wall doesn’t yield hence the flag shape hysteretic can be used to idealize modal SDOF system. Different equivalent linearization approaches were studied based on flag shape hysteresis system. Equivalent linear model was used to predict the total nonlinear response of a building. Finally, equivalent linear model for flag shape hysteresis was proposed based on crack strength reduction factor. Equivalent linear parameters were developed by two dimensional optimization in which both equivalent period and equivalent damping are determined based on optimizing the maximum force and displacement between nonlinear and linear system. Optimization objective was to get the minimum error between the nonlinear and equivalent linear responses for the combination of linear parameters, which were taken as optimum parameters. Equivalent linear parameters were developed for three sets of ground motion. |
| Year | 2017 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-17-22 |
| Type | Thesis |
| School | School of Engineering and Technology |
| 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; |
| Examination Committee(s) | Anwar, Naveed;Punchet Thammarak; |
| Scholarship Donor(s) | Thailand (HM King); |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2017 |