Study On Intelligent Compaction Control Technology Of Subgrade

Intelligent Compaction(IC) technology is an innovation of roller technology that can be used to improve quality control(QC) of the subgrade compaction process.Compaction is one of the important processes in road project construction, directly affect the quality and durability of the road. At present, the traditional compaction quality testing mainly relies on the field test of "sampling", belongs to the "dot" and "afterwards" control, difficult to implement the process control and comprehensive control, under voltage, leakage pressure and overpressure phenomenon, using sampling method to obtain the degree of compaction of indicators can’t reflect the compaction quality comprehensively. Therefore, the intelligent compaction control technology which adopts real-time, comprehensive quality monitoring and testing on the whole rolling compaction is a new approach to improve the quality of subgrade in the construction process.In the paper, on the basis of deep analysis on the research status of the intelligent compaction technology of the subgrade at home and abroad, combined with engineering practice and test data, first of all, on intelligent compaction test indexes and conventional problem of the correlation between the test indexes are studied, Analyzed the impact correlation of several main influencing factors, and the application of corresponding principle; Secondly, proposed three process control indicators of intelligent subgrade compaction technology, including the compaction degree, the compaction uniformity and the compaction stability. Discussed the specific meaning of the three indicators and their evaluation methods; finally, studied the compaction quality acceptance mode, put forward several patterns and characteristics, mainly researched the key elements of intelligent compaction control acceptance. Analyzed the characteristics of the acceptance standards and the key parameters need to control.The research points out the new ideas for the future optimization of highway subgrade filling quality acceptance criteria. It plays important practical roles in strengthening the subgrade construction process quality control.