黄土边坡框架锚杆结构的加固研究

STUDY ON GRILLAGE SUPPORTING STRUCTURE WITH ANCHOR BARS ON LOESS SLOPE REINFORCEMENT

将框架锚杆结构用于黄土边坡支护是一种新型的边坡防护加固方法。本文合理选取了该支护结构的土压力、框架和锚杆的设计计算模型,着重强调了横梁和立柱的计算单元,并指出梁、柱不仅承担坡体直接作用于梁截面上的均布荷载,而且还承担相邻挡土板传递来的三角形(或梯形)土压力荷载,是二者的叠加。此外,还对锚杆轴力的计算进行了改进。最后对某一黄土边坡进行了完整设计和稳定性分析,说明该设计方法既安全可靠又具有较好的经济性和适用性。

The grillage supporting structure with anchor bars applied to loess slope is a new type of slope protection and reinforcement method. In this paper, the rational calculation models of the soil pressure, the grillage supporting structure and anchor bars are selected, and calculation elements of horizontal beams and vertical columns are em- phasized. It also points out that beams and columns not only bear the uniform load in the beam cross section, but also bear the triangular or trapezoidal load passed from adjacent retaining plate. It is the superposition of the two components. Finally, a loess slope is designed and analyzed. The results show that this method is both safe and reli- able and has a better economic applicability.