广州市三涌补水工程运营对广深铁路等邻近构筑物的影响  

Influence of Guangzhou Three-river Water Replenishing Project on Guangzhou- Shenzhen Railway and Other Neighboring Structures

作　　者：周新民 张洪彬[2] 刘添俊[2] 安关峰[2] 吴永志 

机构地区：[1]广州市河涌管理处,广东广州510000 [2]广州市市政集团有限公司,广东广州510060

出　　处：《城市道桥与防洪》2013年第10期172-175,4,共4页Urban Roads Bridges & Flood Control

基　　金：广东省国际合作项目(2012B050300005)

摘　　要：该文结合广州市北部水系建设沙河涌等三条河涌联合补水工程的实际情况,对该工程长距离输水管道穿越广深铁路等邻近构筑物处节点在运营期间管内输水流量变化、管道渗漏导致下方基础强度降低等情况下造成周边构筑物的变形特性的影响进行了分析。研究表明,随着管道内充水高度的增加,广深铁路等邻近结构的水平及竖向位移均在增加,但是即使当管道内充满水时,造成邻近结构的水平及竖向位移也仅为0.14 mm及0.83 mm,远不会对结构造成结构性损害;管道下卧粉质粘土层流失松弛导致的强度降低并未对邻近的广深铁路等构筑物造成破坏性影响。Combined with the practical condition of a three-river water replenishing project of water system construction in the north of Guangzhou, the article analyzes the influence on the deformation characteristic of the neighboring structures caused by the strength reduction of the lower foundation resulted from the flow variation and leakage of the long-distance conveying water pipeline crossing Guangzhou- Shenzhen Railway and other neighboring structures under the operation. The study result shows that the horizontal and vertical displacements of Guangzhou-Shenzhen Railway and other structures nearby are all increased with the increment of water filling height in pipeline. But even if the full water in pipeline, the caused horizontal and vertical displacements of the structure nearby are only 0.14mm and 0.83mm, which is never to cause the structural damage. In addition, the strength reduction of pipeline caused by the horizontal silty clay layer?soil erosion and relaxation does not obviously influence the safety of Guangzhou-Shenzhen Railway and other structures nearby.

关 键 词：输水管道 周边环境 MIDAS—GTS 位移 

分 类 号：TU990.3[建筑科学—市政工程]