软弱地基上的新型加筋土墙

New type of Stiffened Retaining Wall on Soft Subgrade

安全可靠、经济合理地解决软弱地基上的高填方支挡结构设计问题往往是一种挑战,该文结合工程实际介绍了一个在软弱地基上填土高度22m的新型加筋土墙的设计。软弱地基采用桩承加筋土垫层处理,新型加筋土墙为组合模块墙面土工格栅加筋结构。组合模块墙面克服了传统拼装薄墙面"鼓肚"变形和墙背结点处因应力集中拉筋容易断裂的缺点,文中介绍了组合模块墙面的稳定计算及计算实例。

It is a challenge sometimes safely,reliably,economically and reasonably to solve the design problem of high-filling and retaining wall structure on the soft subgrade. Combined with the engineering practice,the article introduces a design of 22-m high filling of new stiffened retaining wall on the soft subgrade. The soft subgrade is treated by the pile stiffened soil bedding course. The new stiffened retaining wall is the built-up module wall earth grid stiffened structure. The built-up module wall overcomes the disadvantages of the 'bulge belly' deformation on the traditional spliced thin wall and the easy-breaking because stress centrally to tie bar at the crunode at the back of wall. The article introduces the stabilizing calculation and the calculation example of the built-up module wall.