针对盾构隧道横向刚度有效率取值及其影响因素,借助有限元软件建立三维壳弹簧模型,计算综合考虑错缝拼装与地层抗力作用下的横向刚度有效率,探讨不同错缝拼装角度和地层抗力系数对隧道横向刚度有效率的影响。结果表明：典型珠三角地区错缝拼装时的横向刚度有效率为0.75,较通缝拼装0.65增加了15%。横向刚度有效率随着错缝角度的增大而增大,当错缝角度超过45°时,刚度有效率的变化趋于稳定。横向刚度有效率随着地基反力系数的增大,呈现线性增长趋势。%In view of shield tunnel transverse effective stiffness value and its influencing factors, the finite element software is employed to establish a three-dimensional shell-spring model to calculate and analyze the transverse effective rigidity ratio in comprehensive consideration of staggered joint angle and strata resistance and to address the impact of staggered joint and soil stiffness on transverse effective rigidity ratio of shield tunnel. The results show that the transverse effective stiffness value in the typical pearl river delta region is 0. 75, which is 15% increase compared with 0. 65 for through joint assembling. The Transverse effective stiffness increases with the increase of the angle of staggered joint. When the staggered joint angle exceeds 45°, the change of the effective rigidity tends to be stable. The transverse effective stiffness tends to show linear growth with the increase of the coefficient of subgrade reaction force.
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