摘要
针对城郊区域广泛分布的上覆深厚杂填土软土地基场地,引入真空预压施工方案。通过引孔、场地周边密封及膜面保护这3项技术改进,克服了表层深厚杂填土对真空预压的干扰,确保了真空预压的顺利实施。沉降、孔压、十字板及室内土工试验等监测检测数据表明加固效果显著,十字板强度平均提高达67%。该施工技术在本案例中取得了成功,可为类似工程所参考。
For the soft foundation covered with deep miscellaneous fill which is widely distributed in the suburban area, vacuum preloading construction technique is introduced. Adopting three improved construction technology including diversion hole, surrounding site sealing and diaphragm protection, the disturbance caused by deep miscellaneous fill is conquered,and vacuum preloading is implemented smoothly. The monitoring and testing data for the settlement,pore pressure,vane shear test and geotechnical laboratory test reveal that the strengthening effect is remarkable and the vane shear test strength increases by 67%. The construction technique achieves success in the engineering case,thus it may serve as reference for similar projects.
出处
《水运工程》
北大核心
2016年第3期155-158,共4页
Port & Waterway Engineering
关键词
深厚杂填土
软土地基
真空预压
施工技术改进
监测检测
deep miscellaneous fill
soft foundation
vacuum preloading
improved construction technology
monitoring and testing
