云南某学校滑坡抗滑桩变形原因分析

以云南某学校滑坡抗滑桩变形为例，分析了强风化基岩斜坡区滑坡抗滑桩锚固段岩土条件，通过计算桩侧岩体反力及横向容许承载力，发现横向容许承载力远小于荷载值。综合分析得出，抗滑桩变形过大的主要原因是锚固段嵌入深度不够，使滑面之下一定深度内岩土体横向承载力不足所致。

Cause Analysis of Anti-slide Piles Deformation of Landslide at the School in Yunnan

Taking the deformation of anti-slide piles at a school in Yunnan as the example, the geotechnical conditions of the anchorage section of anti-slide piles in the strongly weathered bedrock slope area were analyzed and, by calculating the rock reaction on the pile side and the lateral allowable bearing capacity, it was found that the lateral allowable bearing capacity is far less than the load value. It was concluded after the comprehensive analysis that the excessive deformation of anti-slide piles is mainly caused by inadequate lateral bearing capacity of rock-soil body within certain depth below the slide face as a result of insufficient embedded depth of anchorage section.