Quantitative Study On Low-strain Dynamic Analysis Of Pile Integrity

To build an expressway in areas where sandy soil liquefaction exists, we have to, first and foremost, settle the problem of engineering safety against earthquake. In other words sandy soil liquefaction has to be eliminated to protect tan structures from earthquake damages. Dynamic compaction has been an effective method for the soft ground in civil works engineering. However, in highway construction this method has not been much used.The present paper, based on practice of dynamic compaction to eliminate sandy soil liquefaction on Shi-An expressway, is presenting a penetrated analysis of working properties and mechanism of consolidation of dynamic compaction. Some construction co-efficient have also been presented for reference in highway construction. Meanwhile, in combination with the flat board static load tests, a simple and easy-to-look analysis model has been proposed for composite ground of macadam (fly-ash)The present paper concludes that dynamic compaction for treatment of sandy soil liquefaction is an effective approach...