Landslides induced by engineering construction are very common in reality; it is necessary to clarify the causes of landslide failure to avoid similar accidents. A landslide induced by highway construction is taken as a case. Field observations, data collection, and analyses were used to investigate the deformation and causes of the landslide. The failed slope is mostly comprised of gravel soil, there were some shear cracks on both sides of the slope before sliding, and most tensile cracks were connected with shear cracks after sliding. The cut slope of this highway was designed to be protected by prestressed anchor sheet piles. However, in the construction process, the slope in front of the antipiles was removed when the piles were constructed without any anchor cables, which led to the shear damage of a row of anti-slide piles with a 15-meter-long cantilever. Moreover, continuous rainfall over several days aggravated the landslide damage because of increase of the self-weight and degradation of the mechanical parameters of the slope materials. The mechanical and simulation analyses both show that the resistance provided by the cantilever piles was not enough to prevent the force behind the piles. The irrational construction process and rainfall caused the slope failure.

中文翻译：

---

公路抗滑桩开挖边坡的破坏分析

工程建设引起的滑坡在现实中非常普遍。有必要弄清滑坡破坏的原因，以免发生类似事故。以高速公路建设引起的滑坡为例。现场观察，数据收集和分析用于调查滑坡的变形和成因。破坏的斜坡主要由砾石土组成，在滑动之前，斜坡的两侧都有一些剪切裂缝，而大多数拉伸裂缝与滑动之后的剪切裂缝有关。该公路的切坡设计为采用预应力锚固板桩进行保护。但是，在建造过程中，当建造桩时没有任何锚索时，抗桩桩前方的坡度就被移除了，导致一排15米长悬臂的抗滑桩的剪切损伤。此外，由于自重增加和边坡材料的机械参数降低，连续几天降雨持续加剧了滑坡的破坏。力学分析和仿真分析均表明，悬臂桩提供的阻力不足以防止桩后的力。不合理的施工过程和降雨造成了边坡的破坏。力学和仿真分析均表明，悬臂桩提供的阻力不足以防止桩后的力。不合理的施工过程和降雨造成了边坡的破坏。力学和仿真分析均表明，悬臂桩提供的阻力不足以防止桩后的力。不合理的施工过程和降雨造成了边坡的破坏。