Abstract: Dynamic centrifuge modeling has become a generally domestic and international acknowledgement of advancement and effectiveness in geotechnical earthquake engineering. However, its realization of superiority is inseparable from reliable measurement techniques. The common failure forms of node-oriented measurement techniques in dynamic centrifuge modeling are summarized, including discussing three types of conventional node-oriented transducers for pore water pressure, acceleration and displacement to increase reliability of test results by optimizing design and improving measurement. Via separable configuration, the emergency capability and controllability of pore pressure transducer are enhanced while the saturation quality and rate of porous stone using new technique of vacuum deionized-water saturation are advanced. The workability of accelerometer with utilization of core element increased rises using a type of separable configuration; and a rubber cover seal technique is established to reduce probability of settlement and inclination during seismic loading. A combined measurement technique of accelerometer and displacement transducer is proposed, be able to gain high accuracy of internal lateral soil displacement variation with better flexibility of placement.

Key words: dynamic centrifuge test, measurement technique, transducer, reliability, improvement method