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隧道暗洞地基承载力容许值的修正非常重要,但目前隧道的相关规范中没有明确的修正公式。为解决隧道暗洞地基承载力容许值修正的问题,在分析对比JTG D63—2007《公路桥涵地基与基础设计规范》和GB 50007—2011《建筑地基基础设计规范》中的地基承载力修正公式计算结果的基础上,根据隧道的结构特点,对已有公式进行修正和改进,建立适用于隧道暗洞的地基承载力容许值修正公式,为以后类似工程的设计和研究提供借鉴与参考。
Correction of the allowable value of bearing capacity of tunnel hidden tunnel foundation is very important, but there is no clear correction formula in the relevant norms of tunnel at present. In order to solve the problem of the allowable value correction of the bearing capacity of underground tunnels in tunnels, this paper analyzes and compares the formulas for calculating the bearing capacity of foundation in JTG D63-2007 “code for design of foundation and foundation of highway bridges and culverts” and GB 50007-2011 Based on the results, the existing formulas are modified and improved according to the structural characteristics of the tunnel, and the formulas for calculating the allowable values of the bearing capacity of foundation for tunnels are established, which can provide reference and reference for the design and research of similar projects in the future.