朱丽红^*， 黄勇， 王瑞和

（  中国石油大学（华东）石油工程学院；  ）

摘要： 高压水射流辅助沉桩技术的关键是水射流的破土能力，而水射流的破土能力有与喷头的结构密切相关。从高压胶管输送来的水射流被喷头重新分配，直接影响水射流对土的冲击力，因此，本文针对旋转射流喷头进行结构设计，借助数值模拟对喷头进行优化，借助实验对喷头进行优选。结果表明：无侧喷孔多喷头水射流样机为射流辅助沉桩最佳喷头结构。
关键词： 桩基；水射流；喷头结构

ZHU Lihong^1,*， HUANG Yong^2,， WANG Ruihe^3,

（  1、School of petroleum engineering China university of petroleum,Qingdao, 266580；       2、School of petroleum engineering, China university of petrolem, Qingdao, 266580；       3、Schoool of petroleum engingeering, China university of petroleum, Qingdao, 266580；  ）

Abstract： The key of high pressure water jet assisted sinking pile technology is water jet breaking capacity, and water jet ground breaking ability is closely related to the structure of the nozzle. The water jet from the high pressure hose is to be re distributed, which directly affects the impact of the water jet on the soil. In this paper, the structure design of the rotary jet nozzle is designed, and the optimization of the nozzle is optimized by numerical simulation. The results show that the optimal nozzle structure of the jet assisted sinking pile is the jet nozzle of the non-side jet nozzle.
Keywords： pile foundation; water jet; nozzle structure