多功能探头静力触探原位测试在跨海大桥建设中的应用

通过将带有测倾斜度、测孔压功能的静力触探技术应用于跨海大桥地基勘察的工程实例,阐述了海上静探施工的操作重点和多功能静力触探测试成果的应用,并与普通探头测试深度数据、钻探分层和桩基载荷试验成果进行了对比、验证。发现依靠带测倾斜度和孔压的探头对地基土分层和深度的校正均起到很大作用,同时通过将静力触探技术应用于海域勘察,可以更直观地估算桩基承载力,判断地基土的工程地质性质。

Application of In-Situ Cone Penetration Test in Sea-Crossing Bridge Construction by Using Multi-Purpose Probe Head

The cone penetration test technology with inclination and pore water pressure measurement functions is applied in the sea-crossing bridge construction subsurface investigation, the offshore CPT operation and also test results are analyzed and compared with the normal probe head CPT data, stratification and pile load tests. It is found helpful for dividing soil layers and correcting the soil layer depths though using probe head equipped with inclination and pore water pressure measurement function, and it is much intuitive to estimate pile foundation bearing capacity or judge the engineering geological properties of the foundation soil though using CPT in offshore exploration.