本文介绍了中原乙烯改扩建工程桩基方案的选择和试桩工程情况，对比分析和试验结果表明：引孔沉管灌注桩与打入式预制桩、螺旋钻孔压浆桩和钻孔灌注桩相比，更具优越性、合理性和经济性。 This paper introduces the selection of the pile foundation scheme and the trial pile construction of the Zhongyuan Ethylene Rehabilitation Project. The comparative analysis and test results show that: the borehole sinking cast-in-place piles and driven prefabricated piles, auger drilling bored piles and bored piles Compared with more superiority, rationality and economy.