摘要
斯托克曼商业中心位于圣彼得堡市中心,其地基土层为流塑状淤泥质软土,且地下水位较高。钻孔灌注基础桩施工时,采用具有环保优点的旋挖钻机全套管跟进钻孔施工工艺,总结套管安装、成孔、清孔、钢筋笼吊装、水下混凝土浇筑等施工措施。结合地质条件,在半硬质、硬质黏土中钻进不使用护筒、部分桩采用一半高度护筒加泥浆护壁。全护筒旋挖钻机钻孔施工技术工期短,保证了软土条件下施工安全,成孔及成桩质量高。
Stockmann Nevsky Center locates in the center of St. Petersburg, and the foundation is in plastic soft soil with rather high underground water level. During construction of bored piles, the engineers adopt environment-friendly construction technology of rotary drilling rig with full casing. Construction technologies of casing installation, holes forming, holes cleaning, reinforcement cage hoisting and pouring of underground concrete are introduced. According to geological conditions, holes can be made without casing or with half height casing and protect wall with slurry. The construction technology of rotary drilling rig with full casing can ensure construction safety in soft soil and quality of pile hole with short construction time.
出处
《施工技术》
CAS
北大核心
2010年第1期22-24,32,共4页
Construction Technology
关键词
基础工程
灌注桩
流塑性软土
旋挖钻机
施工技术
foundation engineering
bored pile
plastic soft soil
rotary drilling rig
construction technology
