PDA动力测桩技术在打桩监测中的应用

The Application of PDA Dynamic Pile Testing Technology during Pile Driving Monitoring

在对某电厂的工程试打桩的基桩高应变动测过程中,针对地质条件复杂、地层岩性的不均一以及打桩方法的不合理等情况,利用PDA对打桩过程中的拉压应力、锤击能量及初打极限承载力进行了监测,分析了监测结果,总结了监测经验。

The article set forth the monitoring method and content during pile driving with the Pile Driving Analyzer (PDA) . During the high strain dynamic testing of foundation piles on engineering pile driving testing for a power plant, according to complicated geological condition, uneven soil strata and unreasonable pile driving method and son on ,the tension stresses and compression stresses and hammer's energy and the ultimate capacities at the time of driving were monitored by PDA. I analyzed monitoring results and summarized monitoring experience.