摘要
衬砌裂缝是公路隧道施工中常见的病害之一。结合三公菁隧道各项监控量测数据和隧道实际地质情况,对裂缝产生的各种原因及其发展变化从力学角度进行正、反演分析和归纳。讨论了隧道设计规范的适用范围,并与实测及反演方法进行比较,同时提出了合理的设计施工方案。实例分析了某断面二次衬砌内力状况,并进行强度校核以解释其裂缝成因。经综合分析及力学计算,存在较大偏压是隧道衬砌产生裂缝的主要原因。最后,提出了综合处理隧道裂缝的具体措施,方案实施后,其效果令人满意。
Phenomenon of lining cracks is one of the familiar diseases during highway tunnel construction. Based on the monitoring data and actual geological situations of Sangongjing tunnel, causes of cracks and their development are generalized by means of direct and back analysis from the viewpoint of mechanics. The application range of tunnel design norm is discussed and compared with the method of site monitoring or back analysis; meanwhile, the reasonable design and construction projects are suggested. Then, the internal force condition of the second liner lying in a certain section is analyzed as an example, which is checked up as an intensity index, aiming to explain the cracks. Result of synthetically analyzing and mechanical computation turns out that the unsymmetrical load is the main cause of the cracks in tunnel lining. Finally, synthetically disposal measures proposed in this paper show the effect is satisfactory after it being enforced.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第18期3311-3315,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
上海市重点建设学科项目
关键词
隧道工程
裂缝
监测
成因
反分析
tunneling engineering
cracks
monitoring
cause offormation back analysis
作者简介
潘洪科（1971-），男，1993年毕业于南方冶金学院建设系采矿工程专业，现为同济大学地下建筑与工程系博士研究生，主要从事岩土、隧道与地下工程方面的研究工作。E-mail：panhk_sh@126．com。
