水泥搅拌桩的低应变测试

针对水泥搅拌桩具有桩体强度较低和桩中心空洞的特点，应用基桩的低应变动测技术，通过水泥土取芯强度与弹性波传播速度的对应关系，传感器与激振点的相对位置变化对测试参数影响情况的研究，探索了低应变动测方法新的应用领域，为水泥搅拌桩的成桩质量检测积累了一定的经验。

LOW STRAIN DYNAMIC TESTING OF CEMENT MIXING PILES

For the cement mixing piles with low strength and a hole in the center, the low strain dynamic testing technique is applied.The testing parameters influenced by the relative position between transmitter and vibrational excitation point are investigated.The relation between pile strength and the velocity of elastic wave is studied. This work opens up a new field of the application of the low strain dynamic testing and accumulates the experience of the piles testing.