辽宁工程技术大学学报(自然科学版)
遼寧工程技術大學學報(自然科學版)
료녕공정기술대학학보(자연과학판)
JOURNAL OF LIAONING TECHNICAL UNIVERSITY(NATURAL SCIENCE)
2013年
7期
943-946
,共4页
黄欣%贾宝新%李祁%聂颖%罗浩
黃訢%賈寶新%李祁%聶穎%囉浩
황흔%가보신%리기%섭영%라호
地铁盾构%分岔隧道%数值模拟%应力集中%三维模型%FLAC3D%应力监测%管片单元
地鐵盾構%分岔隧道%數值模擬%應力集中%三維模型%FLAC3D%應力鑑測%管片單元
지철순구%분차수도%수치모의%응력집중%삼유모형%FLAC3D%응력감측%관편단원
subway shield%forked tunnels%numerical simulation%stress concentration%three-dimensional model%FLAC3D%stress monitoring%segment unit
为研究地铁盾构分岔隧道问题,采用 FLAC3D 三维模拟技术以原始隧道经过简化得到计算分析三维模型,分析了不同分岔角度下的应力、变形问题。研究结果表明:分岔隧道的应力、变形随分岔隧道夹角的增大而减小,应力叠加越来越小,当分叉角度较大时,应力集中峰值开始分岔变为两个峰值;通过与现场监测结果对比,现场监测值与数值模拟结果吻合。
為研究地鐵盾構分岔隧道問題,採用 FLAC3D 三維模擬技術以原始隧道經過簡化得到計算分析三維模型,分析瞭不同分岔角度下的應力、變形問題。研究結果錶明:分岔隧道的應力、變形隨分岔隧道夾角的增大而減小,應力疊加越來越小,噹分扠角度較大時,應力集中峰值開始分岔變為兩箇峰值;通過與現場鑑測結果對比,現場鑑測值與數值模擬結果吻閤。
위연구지철순구분차수도문제,채용 FLAC3D 삼유모의기술이원시수도경과간화득도계산분석삼유모형,분석료불동분차각도하적응력、변형문제。연구결과표명:분차수도적응력、변형수분차수도협각적증대이감소,응력첩가월래월소,당분차각도교대시,응력집중봉치개시분차변위량개봉치;통과여현장감측결과대비,현장감측치여수치모의결과문합。
In order to study the problem of shielded subway forked tunnel, the original tunnel was simplified for the 3D model to analyze the stress and deformation of different bifurcation angle by using the FLAC3D 3D simulation technology. The research results show that the stress and deformation of different forked tunnels are reduced with the bifurcation angle increasing, and the stress superposition is getting smaller and smaller. When the bifurcation angle is large enough, the peak of stress concentration begins to branch into two peaks. By comparing with the field monitoring results, the field monitoring values are agreed with the numerical simulation results.