结合工程实际,对凸榫的防滑机理、设计理论及凸榫构造对挡墙稳定性的影响程度进行了探讨.结果表明,增设凸榫可大幅度提高扶壁式挡墙的抗滑性能,但其对抗倾覆能力的提升影响甚微.另外,凸榫的高度对挡土墙抗滑移稳定性的影响最为敏感,设计中可在满足其他构造要求的条件下适当增大凸榫高度以提高其抗滑稳定性.%The anti-sliding function and design theory of tenon and the influence degree of tenon structure to the retaining wall's stability were introduced in connection with a practical project. The results show that adding tenon can improve the anti-sliding performance of buttressed retaining wall greatly, but it has little effect on the improvement of the anti-turnover ability. In addition, the height of tenon is more sensitive to the effects of anti-sliding stability of the retaining wall, so the designer can increase the height of tenon properly to improve its anti-sliding ability under the condition of meeting other structure requirements.
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