CAJ | 학술논문

为探讨地层分布的不均匀性和高水压问题对隧道衬砌结构受力的影响，文章结合纬三路大直径高水压越江盾构隧道工程，选取典型隧道断面，分别采用单环梁-弹簧模型、多环梁-弹簧模型及壳-弹簧模型对隧道处于不同地层条件下结构的横向受力规律进行了模拟研究，并对三种方法的模拟结果进行了对比分析。结果表明：（1）不考虑环间相互影响的单-环模型，隧道弯矩主要受地层抗力影响；（2）在单-环模型中，拼装角度对隧道弯矩等内力分布影响较小，对变形影响较大。错缝拼接时，相邻环影响不能忽略；（3）考虑环间剪切作用时，隧道的变形有所减小，即使在接头处其变形量也不大。
위탐토지층분포적불균균성화고수압문제대수도츤체결구수력적영향，문장결합위삼로대직경고수압월강순구수도공정，선취전형수도단면，분별채용단배량-탄황모형、다배량-탄황모형급각-탄황모형대수도처우불동지층조건하결구적횡향수력규률진행료모의연구，병대삼충방법적모의결과진행료대비분석。결과표명：（1）불고필배간상호영향적단-배모형，수도만구주요수지층항력영향；（2）재단-배모형중，병장각도대수도만구등내력분포영향교소，대변형영향교대。착봉병접시，상린배영향불능홀략；（3）고필배간전절작용시，수도적변형유소감소，즉사재접두처기변형량야불대。
In order to explore the impacts of non-uniformity of the stratigraphic distribution and high water pressure on the force borne by tunnel linings, the law of force borne by tunnel structures in the transverse direction under different geological conditions was studied using a typical section of the Weisan Road large-diameter river-crossing shield tunnel as an example. A single-ring beam/spring model, multi-ring beam/spring model and shell/spring model were adopted, respectively, and the simulation results of these three methods are analyzed and compared in this paper. The study results indicate that: 1) the bending moment of the tunnel is mainly affected by the stratum resistance based on the single-ring beam model without considering interaction between rings;2) the erecting angle has a slight effect on internal force distribution-like the bending moment-and a strong effect on deformation in the single-ring beam/spring model, and the effect of the adjacent ring can not be ignored while a staggered joint is adopted; and 3) the deformation of the tunnel is somewhat decreased if the shear action between rings is considered, even at the segment joints.