公路工程

复合岩层边坡稳定性一直是土木工程建设者所关注的热点问题。文章以软硬岩互层式复合岩层边坡为研究对象,对其变形破坏机理、破坏模式进行了研究,并分析了边坡稳定性影响因素;采用大型通用有限元软件ABAQUS对垄茶高速公路典型复合岩层边坡进行了稳定性分析计算;最后针对复合岩层边坡特点,提出了"基脚挡墙、深层锚固、浅层防护"的加固方案。研究结果表明,软硬岩互层式复合岩层边坡变形破坏模式可分为滑移—拉裂—剪断破坏、平面旋转式的滑移—拉裂破坏、弯曲—倾倒破坏及块体滑移破坏四种类型;影响边坡稳定性的因素主要包括结构面、地层岩层、水及风化作用;复合岩层边坡综合加固方案能有效地提高边坡的稳定性,确保边坡在运营过程中的稳定性。文章的结论对以后类似工程的建设具有较好的指导意义和应用价值。

The stability of composite slope has always been the hot spot for civil engineering. In this paper,the failure mechanism,failure mode and stability influence factors of composite slope which with soft rock and hard rock is researched. Adopted large general finite element software ABAQUS,the stability of composite rock slop is calculated. At last,according to the characteristic of composite rock slope,the reinforcement plan is put forwarded. The research results show that the failure mode can be divided into categories. The stability influences mainly include structural plane,stratigraphic strata,water and weathering. Comprehensive reinforcement scheme of composite rock slope can improve the stability effectively and the safety can be ensured. The conclusion of this paper can provide guidance for the construction of similar engineering.