Scholarly record
DYNAMIC EFFECTS ON THE EXISTING BUILDINGS DUE TO SIMULTANEOUS IMPACT PILE DRIVING BY TWO DIESEL HAMMERS
Abstract
Pile driving technology remains the most widespread method in Arkhangelsk where the presence of soft soils is an engineering-geological feature. There are situations when pile driving by hammer can be safe for existing buildings. Using two hammers allows to accelerate foundation works but it can damage the adjoining buildings. The monitoring of pile driving by two diesel impact hammers was carried out at one of the sites in the city. Vibration parameters were measured with triaxial accelerometer CMG-5 with continuous recording of the data by logger GSR-24 which made it possible to fulfill a detailed analysis of the pile-sinking process. The intensity of propagating ground vibrations induced by pile driving depends on the penetration of the driven pile. Relation of the time between successive impact of the diesel hammer on pile driving resistance of soil is detected. If one of the hammers starts to work a few minutes later than the first diesel hammer superposition of waves propagating ground vibrations induced by pile driving will be episodical but not frequent. Recommendations for collaboration of hammers for pile driving are given
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