山东建筑大学学报2025，Vol.40Issue(5)：22-28,7.DOI:10.12077/sdjz.2025.05.004
中墙诱使综合管廊双peck沉降规律及敏感性分析
Settlement regularity and sensitivity analysis of double Peck curve in shallow buried and covered cut comprehensive pipe gallery
摘要
Abstract
The central wall is a commonly employed method to enhance construction safety of underground utility tunnels,as it can effectively reduce the settlement of the tunnel crown.In this study,a finite element model was developed based on an underground pipe gallery project in Beijing to investigate the spatiotemporal distribution of settlement on the tunnel lining and the overying soil layers.Using the linear fitting analysis,the influence of the central wall on settlement patterns was quantitatively evaluated.The results indicate that under the influence of the central wall,the crown settlement profiles of the left and right tunnel chambers both follow a single Peck curve,symmetrically distributed about the wall axis.Over the time,the settlement patterns gradually shift toward a double Peck curve,with the location of maximum settlement migrating from the excavation face center to the centers of the left and right chambers.For fine sandy soil,the adding of a central wall causes the vertical settlement within 1.10 meters above the tunnel crown to exhibit a double Peck curve.In the range of 1.10 m to 1.55 meters,significant settlement occurs near the arch shoulder,while other positions show minimal variation,with a maximum differences ont exceeding 2 mm.Beyond 1.55 metres,the soil settlement returns to a single Peck curve distribution.An orthogonal sensitivity of geotechnical parameters revealed that the extent of the double Peck curve zone is most sensitive to cohesion,followed by internal friction angle,while Poisson's ratio and Young's modulusrelatively low and similar sensitivity.关键词
综合管廊/沉降规律/双Peck曲线/敏感性分析Key words
comprehensive pipe gallery/settlement regularity/double Peck curve/sensitivity analysis分类
建筑与水利引用本文复制引用
宋辰宁,赵文彬,范润祥,陈云娟,张国昊..中墙诱使综合管廊双peck沉降规律及敏感性分析[J].山东建筑大学学报,2025,40(5):22-28,7.基金项目
国家自然科学基金面上项目(42172310) （42172310）
