针对杭州地区某工程场地内3种差异明显的中风化持力层,设计了3种不同的工程试桩类型,在6根试桩施工过程中,从入岩界面的判断、岩样的判定、钻杆进尺速度和入岩总时间几个关键环节分别制定操作性较强的控制标准,从项目实际运作情况看,桩基安全性、进度、造价和管理科学合理.%Three pile testing programs, for different length of pile,different pile bearing layers and the status of rock-socketed piles,are designed,aim at three significant different medium weathered siltstone pile bearing layers on a construction site in Hangzhou. In the construction of six test pile in different bearing layers, we developed a strong operational control standards judging from some key aspects like the judgments of rock embedding interface and rock samples.speed of drill pipe and total time of rock embedding. Based on the actual operation of the project,the pile safety,construction schedule,cost and management are scientific and rational.
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