公路挡土墙抗倾覆稳定性设计方法.pdf

40 4 () Vol.40 No.4 2009 8 Journal of Central South University (Science and Technology) Aug. 2009 1, 21 (1. 410076 2. 413000) U417.11 A 1672−7207(2009)04−1154−05 Design method of toppling stability of highway retaining wall ZENG Ge1, 2, ZHOU Zhi-gang2 (1. Changsha University of Science and Technology, Changsha 410076, China; 2. Hunan City University, Yiyang 413000, China) Abstract: By mechanic analysis, toppling damage pattern of retaining wall was put forward, a new definition of toppling stability coefficient was given, the calculating formula of toppling stability coefficient was presented, and a new design method about retaining wall toppling stability was established. The results show that the toppling stability coefficient has a definite relationship with the ultimate bearing capability of foundation, that is, the former increases with the latter. Compared with the current specifications, the toppling stability coefficient obtained in the new method is smaller. The traditional design of toppling stability can not attain the anticipatory value of secure store. It is the main reason why the majority of retaining walls are damaged by toppling. The toppling stability design can be checked applying the new method in engineering practice, and it is essential to revise the design when necessary. Key words: road engineering; retaining wall; toppling