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针对顶进推力的计算方法仍然不明确的问题,从盾构开挖隧道的整个过程入手,考虑了盾构机前进过程中的各种阻力,运用数学方法,总结推导出顶进推力的计算公式。并且利用abaqus软件,进行数值模拟,来验证计算的结果。同时与南京地铁线盾构施工的实际情况相结合,模型计算值与实测值基本吻合,地表沉降较小,验证了计算公式的有效性。
In view of the problem that the calculation method of heading thrust is still not clear, starting with the whole process of shield tunneling, considering all kinds of resistance in the process of shield tunneling, mathematical formulas are deduced to derive the formula of heading thrust . And abaqus software, numerical simulation to verify the results of the calculation. At the same time, combined with the actual situation of Nanjing Metro Line shield construction, the calculated values agree well with the measured values, and the settlement of the ground surface is small, which verifies the validity of the formula.