摘要
对某扇形大型深基坑工程,在扇形区采用了单排钻孔灌注桩与单排锚杆组合式围护结构和单排深层搅拌桩止水结构。在基坑开挖过程中,对深基坑围护桩进行了水平位移监测,重点监测了扇形区围护桩桩顶和桩身水平位移。监测结果显示,在未施加锚杆前,支护桩桩项水平位移较大;施加锚杆后,桩顶水平位移增加较少,在桩身弯距最大处桩身水平位移最大,并呈"鼓肚"状。结合监测数据,分析了支护桩水平位移结果的原因,并提出了运用该方案的一些建议。
In a large deep sector foundation pit project, an enclosure structure of single row bored pile combined with single row anchor and a sealing structure of deep mixing pile are used. Horizontal displacement of the enclosure structure is monitored when the foundation pit is excavated. The horizontal displacements of the top and body of fender piles are particularly monitored. It is shown that horizontal displacements of the top of fender piles without anchors are bigger than those with anchors. When anchors are set, the body of piles has the biggest horizontal displacements at its largest bending moment. The horizontal displacements of fender piles are analyzed based on monitoring data and some advice are given.
出处
《南通大学学报（自然科学版）》
CAS
2009年第4期54-58,共5页
Journal of Nantong University(Natural Science Edition)
基金
国家自然科学基金项目(50608038)
关键词
深基坑
桩锚支护
止水结构
深层搅拌桩
水平位移
deep foundation pit
pile-bolt supporting
water-proof structure
deep-mixing pile
horizontal displacements
