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排水粉喷桩是将常规粉喷桩与塑料排水板两种不同加固软土地基工法相结合起来,充分利用各自的优点,变不利为有利,从而达到更有效、经济、快速加固软土地基的一种新工法。为使该工法得以应用推广,通过现场的沉降、水平位移、载荷试验等测试,结果表明该工法在加大粉喷桩桩间距(2.2m)的情况下,其复合地基沉降量、承载力均能达到常规粉喷桩(桩间距1.5m)复合地基的处理效果。因此该新工法是一种比传统粉喷桩工法更为经济、实用和有效的软土地基处理方法。
Drainage powder injection pile is the conventional powder spray pile and plastic drainage board two different methods of reinforcing soft groundwork combined to make full use of their advantages, become unfavorable for the benefit, so as to achieve more effective, economical and rapid reinforcement of soft ground A new method. In order to promote the application of the method, the tests of settlement, horizontal displacement and load test in the field show that the settlement and the bearing capacity of the composite foundation under the condition of increasing the spacing of the DJM pile (2.2m) Can reach the conventional DJM pile (pile spacing 1.5m) composite foundation treatment effect. Therefore, the new method is a more economical, practical and effective method of soft soil foundation treatment than the traditional DJM method.