钢筋混凝土钻孔灌注桩桩端桩侧后压浆技术

结合工程实例，介绍了钢筋混凝土钻孔灌注桩桩端桩侧后压浆技术的原理及应用，该技术是采用通过桩身预埋铁管，用高压力强行将水泥浆压入桩底桩侧土层中，在桩身质量达到规范要求的前提下大幅度提桩端及桩侧土层承载力，从而提高单桩群桩承载力和刚度。并对试桩进行了静载试验，得出了一系列试验数据，从而证明钻孔灌注桩桩端桩侧后压浆技术的可行性。

The post-pressure grouting technology in pile tip and pile lateral of reinforced concrete bored cast-in place piles

Combined with the actual construction the principle and application of post pressure grouting technology in pile tip and pile lateral of reinforced concrete bored cast in place piles are introduced. This technology enhance the bearing capacity of pile tip and pile lateral through pre embedding steel tube in piles and grouting the concrete in the earth of tip and lateral by high pressure. This technology enhances the bearing capacity and rigidity of single pile and pile group, too. A serial experimental datum is obtained through static load test. The datum prove the feasibility of this technology.