摘要
地铁车站近距离下穿热力管网风险极大,过度沉降常常导致管线变形损坏甚至引发安全事故,属于重大安全隐患.因此,研究暗挖施工对热力管网的影响,了解管线的变形及受力特性,对于生产安全的管控尤其重要.以北京地铁八号线中国美术馆站CRD单层暗挖段为依托,利用FLAC 3D模拟主动控制后热力管网的变形和受力,然后参照施工后现状,利用监测数据进行应力校核,并对预测值和实测值之间的差异作出分析.模型中对各种主要影响因素考虑得较为全面,可为类似工程提供参考.
It is high risk where subway tunnel down through heat pipe network at close range since its excessive subsidence often leads to pipe deformation, damage and even safety accidents and then is concluded as a major safety hazard. Therefore, the vital task for safety control is to research the effects of excavation on heating pipe network and understand deformation stress characteristics of pipelines. Based on the CRD single underground section at National Art Museum of China station in Beijing metro line No. 8, using FLAC 3D to simulate deformation and stress of heat pipe network with active control measures, then compared with the post-excavation situation and checked its stress by monitoring data, finally the differences between the predicted values and the measured are analysed. In addition, these measures exist general reference value derived from the model and evaluation method comprehensively considered various dominant factors.
作者
刘军
张豫湘
韦立明
董淑棉
Liu Jun Zhang Yuxiang Wei Liming Dong Shumian(School of Civil and Traffic Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044 Beijing Tede Thermal Technology Development Co. , Ltd. , Beijing 100028 Beijing Heating Project Design Co. , Ltd. , Beijing 100028)
出处
《北京建筑大学学报》
2017年第1期16-22,共7页
Journal of Beijing University of Civil Engineering and Architecture
基金
北京市属高等院校创新团队建设与教师职业发展计划项目(IDHT20130512)
关键词
CRD法
热力管网
数值模拟
变形
穿越
CRD method
heat pipeline network
numerical simulation
crossing
