文献类型：期刊文献

英文题名：Three-Dimensional Printing Experiments and Particle-Based Meshless Numerical Investigations on the Failure Modes of Tunnel-Lining Structures Containing Fissures

作者：Yu, Shuyang[1,2];Chen, Zhongqing[1];Li, Yifei[3];Li, Wei[2];Zhang, Bufan[2]

机构：[1]Shaoxing Univ, Key Lab Rock Mech & Geohazards Zhejiang Prov, Shaoxing 312000, Peoples R China;[2]Nantong Univ, Sch Transportat & Civil Engn, Nantong 226019, Peoples R China;[3]Huzhou Univ, Dept Mech Engn, Huzhou 313002, Peoples R China

年份：2025

卷号：15

期号：12

外文期刊名：BUILDINGS

收录：SCI-EXPANDED(收录号：WOS:001516181200001)、、EI(收录号：20252618679512)、Scopus(收录号：2-s2.0-105009163991)、WOS

基金：This work is supported by the Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province (IBGDP-2023-02) and the Zhejiang Provincial Natural Science Foundation of China under Grant No. LY22D020001.

语种：英文

外文关键词：tunnel-lining structures; crack propagation; 3D printing; numerical simulation

外文摘要：The presence of fissures poses significant threats to tunnel-lining structures, and the interaction between tunnels and linings under complex stress conditions remains poorly understood. This study investigated the failure modes of tunnel-lining structures with prefabricated fissures via 3D-printed samples, uniaxial compression experiments using DIC technology for full-field strain monitoring, and a particle-based meshless (SPH) numerical method to simulate tunnel-fissure interactions. The results show that under uniaxial compression, three crack types (main, upper/lower side cracks) initiate from the tunnel, while only wing cracks form at pre-existing fissures; wing crack initiation suppresses upper-side cracks, whereas more lining cracks (upper, middle, lower, corner, bottom) emerge without fissure-induced propagation. Fissure orientation (beta) and inclination (alpha) significantly affect crack distributions: beta = 90 degrees induces maximum stress concentration and asymmetric deformation, while alpha >= 45 degrees promotes wing crack initiation and reduces lining crack density. Along with our findings, we offer design recommendations to prioritize fissure orientation in tunnel engineering and expand SPH applications for predicting crack propagation in underground structures with complex fissures.