埋地钢管失效的几种主要类型

杜绝机译,请审阅。埋地钢管失效的几种主要类型Some main failure types of buried steel pipeline地表下沉曲线Surface subsidence curves人为地下活动过程中地表建筑物的移动和附加变形The movement and additional deformation of surface buildings during human underground activities人为地下隧道施工引起地表变形示意图Schematic diagram of the surface deformation caused by man-made underground tunnel construction常见管道试验研究Research on the common pipeline tests研究技术路线流程图The flow chart of technological route 地表变形对钢管线结构的影响及其保护研究Research on the influence of surface deformation on steel pipeline structure and the protection土体与钢管线协同作用有限元模型的建立及验证The establishment and verification of finite-element model of the synergies by soil and pipelines数值计算理论基础Theoretical basis for numerical calculation物体上的外部载荷和内部作用力The external load and internal force on the object 某一增量步中的首次迭代The first iteration in an incremental step第二种迭代The second kind of iterationFLEXION-TORSION作用机理FLEXION-TORSION mechanismAXIAL作用机理AXIAL mechanism与物理试验相匹配的单管加载模型The single-tube loading model matched with the physical tests深圳地铁一期三维开挖有限元模型The finite element model of the 3D excavation of Shenzhen Metro first stage管隧0°空间夹角模型0° space angle model between pipeline and tunnel模拟与试验的对比分析Comparison analysis between simulation and tests不同管道内压的影响The influence of the internal pressure of different pipeline钢管注水加压示意图The schematic diagram of water injection compression on steel pipeline注水加压钢管弯曲试验装置图The set-up for bending test of steel pipeline with water injection compressed不同内压钢管线的竖向位移变形曲线The vertical deformation curve of the steel pipelines with different internal pressures钢管线最大位移和最大应力与不同内压之间的关系曲线The curve of the maximum displacement and maximum stress vs the different internal pressure of the pipelines