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隧道掘进范围外的孤石对横琴超大断面海底盾构隧道结构受力影响研究
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摘要
文章针对横琴超大断面海底盾构隧道穿越孤石群,基于软弱土层中孤石尺寸和分布位置的随机性及其较高的强度,盾构隧道管片结构受力不明确这一难题。在数值模拟的基础上,分析了盾构隧道外侧孤石对管片受力的力学特征;通过数值模拟,得出了孤石大小、方位及距离对该盾构隧道结构受力的影响规律。
Aim to study the large section subsea shield tunnel Hengqin crossing huge boulders,based on the higher strength of boulders in the soft soil and the size and randomness of its location.Thus the shield tunnel's segment structural discontinuity becomes a tough problem.Based on the numerical simulation,analysis the force characteristic of the segements in condition of solitary stones aside of the tube;Numerical simulations obtained the mechanical characteristics of the structure result from solitary stone's size,orientation and the distance from the tunnel structure.
引文
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