超长钻孔灌注桩基础群桩效应分析

摘要

Combining with the example of some large-scale bridge project, the paper establishes many finite elementary models, researches the pile group effect which influence the pile group foundation of the super-long bored pile, analyzes the pile distance and the pile numbers, and the result proves that the coefficient of the pile group effect is increasingly close to 1, when the pile distance is added gradually, the coefficient of the pile group effect is increasingly close to 1, when the pile numbers is reduced gradually.%结合某大型桥梁工程实例，建立了多个有限元模型，对影响超长钻孔灌注桩群桩基础的群桩效应进行了研究，着重分析了桩距和桩数两大因素。结果表明，桩距越大，群桩效应系数越接近于1；桩数越小，群桩效应系数越接近于1。