Publication Abstract

Proceedings - Fourth International Conference - Piling and Deep Foundations, 1991, Stresa, Italy, (DFI)

38 Increased Project Economy by Field Montoring of Deep Soil Compaction
B. Lindberg; Hercules AB, Gothenburg, Sweden K.R. Massarsch Geo Engineering SA, Waterloo, Belgium

Deep vibratory compaction in granular soils can be an economical alternative to convention pile foundation. The feasibility of this method depends on the use of appropriate equipment, detailed geotechnical design and efficient project execution, taking into account the specific foundation requirements. In the paper, the factors influencing deep vibratory compaction are discussed. When foundations are to be provided in friction soils, the total and differential settlements are usually the most important design parameters. Therefore, the determination of the soil modulus in situ is essential for the assessment of the required degree of soil improvement. Two case histories are presented which show, the modulus can be increased by a factor of at least 2.5 to 5. The efficiency of project execution could be increased by field tests at the start of the projects and monitoring of compaction during project execution.

 article #478; publication #37 (IC-1991-IT)