مطالعه ي رفتار ماسه ي بندرانزلي به كمك نتايج آزمايش هاي تانك شفاف و ميز لرزه

A GLASS TANK AND A VIBRATION TABLE

In recent years , the Auzali har bor has been developed as the most important port at the northern border of IR.AN. Geot echnical investigations play an imp ort ant role in the design and construc tion of oflshore and onshore projects. Due to th e existence of loose saturated sandiu the Anzali sub surface deposits , any earthquake occurrences may lead to liqu efaction. The consequence of this may cause damage to struct ures, due to loss of bearing capacity, set tlement and lateral spreading . For observa tion of Anzali sand behavior , a transparent chamber was built, including a glass tank, a vibration table system and a hydraulic platform . By ntilizing this apparatus, one is able to study and observe the different conditions for static and dynamic liquefaction phenomenain sa nd which has been poured into the glass tank . Equivalent accelerations, ranging from 0.15g to O.35g, with amplitudes of 0.6 to a.9cm, were imp osedou th e sand with different sets of density in the chamber . According to the developed excesspore water pressure and instability condit ions not edduring the test procedures ; few criteria for liquefacti on and iustabili ty have been coucluded.