@article {bnh-5163, title = {Monitoring the dynamic behaviour of the Merlynston Creek Bridge using interferometric radar sensors and finite element modeling}, journal = {International Journal of Applied Mechanics}, volume = {9}, year = {2017}, month = {02/2017}, abstract = {

Bridges play an important role in economic development and bring important social benefits. The development of innovative bridge monitoring techniques will enable road authorities to optimize operational and maintenance activities for bridges. However, monitoring the dynamic behavior of a bridge requires a comprehensive understanding of the interaction between the bridge and traffic loading which has not been fully achieved so far. In the present study, an integrated bridge health monitoring framework is developed using advanced 3D Finite Element modeling in conjunction with Weight-in-motion (WIM) technology and interferometric radar sensors (IBIS-S). The realistic traffic loads imposed on the bridge will be obtained through calibration and validation of traffic loading prediction model using real-time bridge dynamic behavior captured by IBIS-S and WIM data. Using the Merlynston Creek Bridge in Melbourne, Australia as a case study, it demonstrated that the proposed bridge monitoring framework can both efficiently and accurately capture the real-time dynamic behavior of the bridge under traffic loading as well as the dynamic characteristics of the bridge. The outcomes from this research could potentially enhance the durability of bridges which is an important component of the sustainability of transport infrastructure.

}, doi = {https://doi.org/10.1142/S175882511750003X}, url = {https://www.worldscientific.com/doi/abs/10.1142/S175882511750003X}, author = {Bidur Kafle and Lihai Zhang and Priyan Mendis and Nilupa Herath and Maizuar Maizuar and Colin Duffield and Russell G Thompson} } @article {bnh-3454, title = {Overturning of precast RC columns in conditions of moderate ground shaking}, journal = {Earthquakes and Structures}, volume = {8}, year = {2015}, month = {2015}, pages = {1-18}, chapter = {1}, abstract = {

A simple method of assessing the risk of overturning of precast reinforced concrete columns is presented in this paper. The displacement-based methodology introduced herein is distinguished from conventional force-based codified methods of aseismic design of structures. As evidenced by results from field tests precast reinforced concrete columns can be displaced to a generous limit without sustaining damage and then fully recover from most of the displacement afterwards. Realistic predictions of the displacement demand of such (rocking) system in conjunction with the displacement capacity estimates enable fragility curves for overturning to be constructed. The interesting observation from the developed fragility curves is that the probability of failure of the precast soft-storey column decreases with increasing size of the column importantly illustrating the "size effect" phenomenon.

}, doi = {10.12989/eas.2015.8.1.001}, url = {http://www.koreascience.or.kr/article/ArticleFullRecord.jsp?cn=TPTPJW_2015_v8n1_1}, author = {Bidur Kafle and Nelson Lam and Elisa Lumantarna and Emad F Gad and John Wilson} }