T型地连墙结构m法计算中的问题和改进

Problems and improvement on calculation of T type underground continuous wall by m method

采用传统m法计算单锚T型地连墙结构内力时,墙前土体反力往往会超过被动土压力,因而需通过多次迭代计算,不断调整土体m值,直至满足要求,计算过程繁琐。结合工程实例,基于传统m法,考虑土体变形对m值的影响,提出采用分段m法计算T型地连墙结构,有效解决了传统m法计算中存在的问题,并在唐山港曹妃甸港区文丰通用杂货码头工程设计中得到成功应用。

When using traditional m method to calculate the internal force of single anchor T type underground continuous wall, the soil reaction force in front of wall tends to exceed the passive earth pressure. Therefore, several times of iterative computation are required to constantly adjust the value m of soil until it meets the requirements, and the process of calculation is cumbersome. Combined with practical work, based on the traditional m method, this paper considers the effect of soil deformation on the value m, and the segmentation m method is proposed to calculate the T type underground continuous wall. It has effectively solved the problem of traditional m method in calculation, and has been successfully applied in engineering design of general cargo terminal in Caofeidian port area of Tangshan port.