摘要
芜湖地区地下工程涉及的土层主要是含水饱和的淤泥质地层。软弱土层土体强度低、土层含水量高,因此在土钉支护中降水和止水的作用尤为明显,而根据基坑等级选择合适勘察手段和方法也非常重要。在软土中土钉的计算中,除了《规程》中的方法外,还可以把土钉看作锚杆,并根据设计确定的土钉长度计算土钉外土体整体滑动稳定性。土钉布置在下部可提高土体的承载力,同时应适当缩小土钉的间距,应用复合型土钉,将多项技术措施结合来达到良好的技术经济效果。
The stratum of pit in Wuhu area are mainly of saturated mucky soil. Its strength is low with high water content, so the operating means and measures for geological investigation are important according to the class of the pits, the soil nailing wall can draw down the level of underwater line and prevent the flow of water. Beside the computation method in the ＂Rules＂, it can take soil nailing as rock anchor, the length of soil nailing as the parameter in computation of stability of landslide, increase the strength of soil by fixing the soil nailing in the underside of the pits or reduce the space between two soil nailings. With the multiple soil-nailing, we will acquire the better technological and economical effects.
出处
《芜湖职业技术学院学报》
2006年第1期48-50,共3页
Journal of Wuhu Institute of Technology
关键词
土钉支护
软弱土层
复合土钉
施工
pit bracing
soft soil
multiple soil-nailing
construction.
