深基坑支护技术在盐北河闸站工程中的应用

Application of deep foundation support technology in Yanbei river sluice station engineering

深基坑工程的设计与施工既要保证整个支护结构在施工过程中的安全,又要控制支护结构及其周围土体的变形,保证周围环境的安全。盐北河闸站工程紧邻恒峰工具股份有限公司厂房,不具备大开挖施工条件,且基坑开挖需重点进行沉降变形控制,故采用钻孔灌注桩+止水帷幕结合内支撑的围护结构。该结构既能挡土又能防水,具有刚度大、变形小的特点。

As is known to all,deep foundation engineering design and construction should both guarantee the safety of the support structure and control the support structure and surrounding soil body deformation so as to guarantee the security of surrounding environment. Yanbei river sluice station engineering is nearby the workshop of Hengfeng Instrument Company,which does not possess large-scale excavation construction conditions and needs subsidence deformation control in foundation excavation. Therefore,it adopts the enclosure structure ob bored pile ＋ waterproofing curtain combining with internal support,which achieves the earth-retaining and water-proofing effects,and has the characteristics of large rigidity and small deformation as well.