应用瞬态面波预测基桩承载力

Application of Transient Wave Test Technique in Estimating the Bearing Capacity of Foundation Pile

建立了桩周土的极限侧阻力标准值及极限端阻力标准值与剪切波速度的相关模型.应用瞬态面波测试技术可以快速检测周土剪切波速,从而可实现单桩承载力的无损检测.简述了瞬态面波检测桩周土剪切波速数据采集与处理的方法技术,针对目前数据采集时必须限制道间距在一个波长范围内存在问题,提出了瞬态面波采集时道间距不受限制的数据处理技术.

The interrelated model of the shear wave velocity with the normal value of ultimate lateral resistance(qsik)and ultimate end bearing resistance(qpk)of the soil around the pile is established.Using transient surface wave exploration,the shear wave velocity of soil around pile can be tested,and the bearing capacity of piles can be determined.The transient surface wave techniques for testing shear wave velocity are discussed in data acquisition and data process.The parper is directed against the problem that channel separation must be less than wavelength in data acquisition,and put forward the technique of data process of arbitrary channel separation.