Lead University: Lehigh University
PI: James Ricles
Co-PIs: Spencer Quiel and Chinmoy Kolay
A small-scale structural dynamic testing laboratory is essential for enhancing graduate and undergraduate structural engineering education on the effects of natural hazards mitigation on civil infrastructure and developing mitigation measures to promote resiliency of this infrastructure. This laboratory would provide hands-on laboratory exercises, research training, and enable the development and validation of innovative testing methods and algorithms. The proposed project is to develop such a small-scale testing facility which will include a shake table, also called a seismic simulator, two dynamic servo-hydraulic actuators, and the hydraulic power supply system. The shake table will be constructed using the in-house knowledge and fabrication capabilities, while the dynamic actuators and servo hydraulic system will be acquired. The existing real-time integrated control architecture and the servo-hydraulic controllers available at the Natural Hazards Engineering Research Infrastructure (NHERI) Lehigh Real-Time Multi-Directional (RTMD) Experimental Facility (EF) housed in the Advanced Technology for Large Structural Systems (ATLSS) Engineering Research Center will be used to drive and control the shake table and the actuators. The proposed facility will enable various types of testing to be performed on structural systems and components subjected to natural hazards, including extreme earthquake and wind loads. These tests include shake table testing for seismic simulation; and force/displacement controlled dynamic testing, hybrid simulation, and real-time hybrid simulation for both seismic and extreme wind loads. The reduced scale equipment will enable it to be conveniently arranged for use, making it economical, while also reducing conjestion on the main laboratory floor.