摘要
从运动学和动力学角度 ,分析应力波在混凝土中的传播规律 :时空关系、波幅衰减、频散作用以及反射波与声波透射的特点 ,结合工程实践 ,总结大直径水下灌注桩低应变检测的工作要点 ,指出综合、合理运用反射波法与声波透射法 ,可以较准确地评价桩身完整性 ,提高检测结果的可靠性 图 6 ,参
From the point of kinematics and dynamics,the author analyses the propagation rules of stress waves in concrete,namely time-space relations,wave amplitude attenuation,dispersion effect and characteristics of transmission of reflected waves and acoustic waves.Combining with engineering practices,the author also concluded the main points of low strain detection of integrity of longdiameter underwater cast-in-situ piles,and pointed out that comprehensive and relational utilization of reflected waves method and acoustic wave transmission method can accurately evaluated the integrity of pile shaft and then improve the reliability of detection.6figs.,3refs.
出处
《湘潭矿业学院学报》
EI
2000年第1期32-36,共5页
Journal of Xiangtan Mining Institute
关键词
大直径桩
水下灌注桩
完整性
低应变检测
long-diameter pile,underwater cast-in-situ pile,reflected wave method,acoustic wave transmission method,low strain detectionSynopsis of the first author Wang Qiren,male,born in 1962,lecturer,geophysics prosection.
