Damage Evaluation and Limit States of Rocking Concrete Walls with Energy Dissipaters

ABSTRACT

In recent earthquakes in Japan, it was difficult for some reinforced concrete buildings to maintain their functionality after earthquakes due to damage to nonstructural RC walls. Currently, society expects quick recovery, if not uninterrupted functionality, of buildings after earthquakes. In this paper, four hybrid rocking wall specimens, along with rocking wall and RC wall were tested to quantify the damage level and limit states based on the 2015 AIJ guidelines. The behaviour of hybrid rocking walls was modelled with amulti-spring model. As aresult, limit states of analyzed walls were successfully classified in agood agreement with experimental results.

KEYWORDS:

• Unbonded post-tensioned precast concrete wall
• self-centring
• damage evaluation
• limit state
• multi-spring model

Acknowledgments

The research was supported by Collaborative Research Project of Materials and Structures Laboratory and World Research Hub Initiative of Institute of Innovative Research, TIT and also Grant–in–Aid from MEXT (PI: S.Kono). The authors express their special thanks to graduate students at the Tokyo Institute of Technology, Prof. Ohmura and his students at Tokyo City University for their help in the experimental work.