Development of a simplified pseudodynamic testing method | |
| Author | Ika Bali |
| Call Number | AIT Thesis no. ST-97-15 |
| Subject(s) | Structural dynamics Structural dynamics |
| Note | A Thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ST-97-15 |
| Abstract | In most of the previous works, pseudodynamic tests were conducted using automatically controlled sophisticated equipment which were very costly. Consequently, this method can not easily be implemented in many structural laboratories in developing countries due to the unavailability of such equipment and the high cost involved. A simplified pseudodynamic testing method was proposed here to cope with such limitations. The characteristic features of this method involve the use of manual-driven hydraulic actuator, a technician as a part of testing system, and a small scaled model. In each step of this method, the displacement response to the dynamic excitation of a model was analytically computed based on the directly measured restoring force, specified inertia and viscous damping characteristics of a model. The displacement was quasi-statically imposed on the model by a manual hydraulic actuator. In order to check the performance and accuracy of this method, a pseudodynamic test is carried out on an elastic cantilever steel specimen. The accuracy was verified by comparing the test results with the accurate numerical integration results. Although it still had certain errors due to the effect of gaps between the hole and the pin of the adapters, the test result showed a good correlation between the target displacement and the analytical displacement in force vibration phase. By using a small displacement correction at affected steps, this effect could be significantly compensated. Three reinforced concrete models of a Hanshin expressway pier which was destroyed by 1995 Kobe earthquake were conducted to demonstrate that this method could be used as an effective tool to investigate the seismic performance of actual structures. These test results showed that this method could be applied to simulate the seismic response of the models although the possibility of personal errors might still exist. |
| Year | 1997 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ST-97-15 |
| 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 Wamitchai;Pennung Wamitchai; |
| Examination Committee(s) | Worsak Kanok-Nukulchai;Gupta, Satyendra P.;Noppadol Phien-Wej; |
| Scholarship Donor(s) | Okumenisches Studienwerk e.V. (OSW), Germany;Christian University of Indonesia, Indonesia; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 1997 |