摘要
结合韩江新城污水处理厂粗格栅及进水泵房工程中的沉井施工实践,针对深厚砂质土层及地下水丰富的地质条件下沉井下沉较为困难的问题,提出了拉森钢板桩及水泥搅拌桩组合支护方式,对关键技术进行阐述,并通过验算沉井下沉系数确保能够在依靠自重的情况下顺利下沉。该工程施工安全、质量可靠,可为类似工程提供施工参考,具有普遍的技术价值和指导意义。
Combined with the construction practice of open caisson in coarse grille and inlet pump house project of Hanjiang New City sewage treatment plant, aiming at the difficult problem of caisson sinking under the geological condition of deep sandy soil layer and abundant groundwater, the combined support mode of Larsen steel sheet pile and cement mixing pile is introduced, and the key technologies are described, and by checking the sinking coefficient of caisson to ensure that it can sink smoothly under the condition of self-weight.The construction of the project is safe and reliable, it can provide a construction model for similar projects, it has universal technical value and guiding significance.
作者
吴元昌
张顺吉
李化吉
WU Yuan-chang;ZHANG Shun-ji;LI Hua-ji(China First Metallurgical Group Co.,Ltd.,Wuhan 430081,China)
出处
《四川建材》
2023年第2期69-71,74,共4页
Sichuan Building Materials
关键词
砂质土层
沉井施工
组合支护方式
下沉系数
sandy soil
open caisson construction
combined support
subsidence coefficient
