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原文传递 DESIGN AND RELIABILITY ASSESSMENT OF DATA ACQUISITION SYSTEM FOR LOUISIANA ACCELERATED LOADING DEVICE.

题名：	DESIGN AND RELIABILITY ASSESSMENT OF DATA ACQUISITION SYSTEM FOR LOUISIANA ACCELERATED LOADING DEVICE.
作者：	Mohammad-LN; Puppala-AJ; Kathavate-S
关键词：	ACCELERATED-LOADING-DEVICES; ACCELERATED-LOAD-TESTING; PAVEMENT-TESTS; DATA-ACQUISITION-SYSTEMS; MONITORING-; SIMULATED-TRAFFIC-LOADING; ENVIRONMENTAL-FACTORS; DATA-MANAGEMENT; DATA-REDUCTION; GRAPHICAL-PRESENTATION; VALIDATION-; SENSORS-; LOADING-SYSTEMS; TEST-RESULTS; REPEATABILITY-
摘要：	The Louisiana Transportation Research Center has purchased an accelerated loading device that is capable of conducting full-scale simulated and accelerated load testing of pavements. A sophisticated data acquisition system was developed for monitoring various types of sensors installed in pavements that help in understanding pavement materials responses associated with simulated traffic loading and environmental factors. In addition, this system is capable of performing such tasks as data management, data reduction, and graphical presentation. Performance validation tests were conducted on an instrumented pavement site to evaluate the developed system. Two types of sensors (H-gauge, T-type thermocouple) and three types of loading system (passenger vehicle, falling weight deflectometer, and Dynaflect) were used in this study. Test results demonstrated the excellent capabilities of the data acquisition system. Results were highly repeatable and proved that the system was capable of monitoring traffic loading. The influences of loading mechanisms such as vehicle loading, impulsive loading, and other forms of loading on the longitudinal strains developed in pavement layers were compared.
总页数：	Transportation Research Record. 1994. (1435) pp16-26 (14 Fig., 1 Tab., 5 Ref.)
报告类型：	科技报告