A RESEARCH ABOUT REINFORCED CONCRETE DRILL-HOLE PILE TESTING IN XI'AN CITY

This article for basis with a construction engineering abundant of prognosticate data reinforced concrete drill-hole pile static loading test in Xi'an City, neither to analyse and evaluate the bored pile quality and the pile integrity; nor certaine those parameter such as the ultimate bearing capacity,the around pile shaft ultimate resistance and the the end bearing capacity of pile etc. This pile testing result has been certained the around pile shaft ultimate resistance each layer soil and the ultimate bearing capacity layer that 《Technical code for building pile foundation 》 (JGJ94-94) investigate the suggestions about 10%~60% and 50% with the yeotechnical engineering reconnaissance report investigate the suggestions。But this reinforced concrete drill-hole pile testing under the conditions carry mainly from the around pile shaft ultimate resistance, the end bearing capacity of pile don't develop all, only developped about 20% ~60%. Throuth this testing result of analytical research, This building the long of the reinforced concrete drill-hole pile not only can reduce 5 meters from Original design, but also economize a great deal of funds, save work a period again, obtain well performance.