Study on the Mechanical Properties and Monitoring of Castable Polyurethane Elastomeric Bearings

Abstract:

As bridge structures have advanced, the demand for higher bearing capacity has increased. Castable Polyurethane Elastomeric Bearings have gained attention due to their strong load-bearing capacity and straightforward manufacturing process. This paper focuses on the development of a polyurethane seismic isolation bearing and examines its microscopic and mechanical properties. Additionally, a flexible strain sensor was created using polyurethane as the polymer substrate and multi-walled carbon nanotubes (MWCNT) as the conductive particles. The sensor's force-electric sensing behavior was systematically analyzed, and its effectiveness in monitoring the deformation of laminated isolation bearings was verified.

• Periodical: Key Engineering Materials (Volume 1008)
• Pages: 3-8
• DOI: https://doi.org/10.4028/p-1fCPWI
• Online since: March 2025
• Authors: Xiao Tao Yu*, Yong Yuan
• Keywords: Castable Polyurethane Elastomeric Bearings, Civil Engineering, Flexible Strain Sensor

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