坡间挡土墙失稳加固实践

介绍205国道高峪铺公铁立交桥失稳挡土墙的加固方法与效果。挡土墙采用“加筋喷射混凝土和预应力锚杆联合加固”方法,边坡采用“微型抗滑锚固桩”加固方法,现场试验表明,在预应力锚杆锚固段长度计算中,注浆体与土体的结合力计算偏于保守,应适当增加注浆体的效半径。在边坡加固中,首次采用“微型抗滑锚固桩”加固方法,参数选择和承载性能需进一步观测和考察。

Reinforcement Practice of Instability Retaining Wall Set on Soil Slope

The reinforcement process and result of instability retaining wall of Gaoyupu Crossroad on 205 national highway are described The reinforcement measure of "pre forced anchors with spray concrete and steel bar" is adopted in instability retaining wall reinforcement The "mini anti sliding reinforced piles" is applied to soil slope reinforcement It is shown by the spot practice that the stick force between cement plasma and soil is understated in the calculating process, the effective radius of cement plasma should be increased in some extent In the reinforcement of soil slope, the technique of "mini anti sliding reinforced piles" is first adopted in practice, so the propriety of parameters and the reinforcement effect should be further observed and examined