关键词: 岩土工程, 重力式挡土墙, 可靠度, 优化设计

Abstract: The traditional gravity retaining wall design didn’t take the randomness of design variable into account, which couldn’t achieve a unified effect of economy and safety. The gravity retaining wall design based on the reliability was introduced, which took the randomness of each design variable into account. The proposed design took the cross-sectional area of gravity retaining wall as the object function, and took the anti-slides, anti-tilts reliability and the section structure request as constraint condition. A general mathematical solver LINGO was adopted to optimize the design of the gravity retaining wall. Finally, the obtained results of section size not only met the requirements of bearing capacity, but also met the reliability requirements. Comparing with the traditional design, the proposed design gets both safety and economy benefit, which brings more benefit for the construction of the project.

Key words: geotechnical engineering;gravity retaining wall, reliability, optimum design