输水管道施工及运营对广州东环高速高架结构的影响分析  

Influence of construction and operation of water pipe on Donghuan highway viaduct structure in Guangzhou City

作　　者：张洪彬[1,2] 周新民 吴永志 刘添俊[2] 安关峰[2] 

机构地区：[1]中南大学土木工程学院,长沙410075 [2]广州市市政集团有限公司广州510060 [3]广州市河涌管理处,广州510642

出　　处：《给水排水》2014年第6期100-104,共5页Water & Wastewater Engineering

基　　金：2011年广州市水务科研与技术推广项目;广东省国际合作项目(2012B050300005)

摘　　要：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临近东环高速处节点在施工过程中以及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而造成周边构筑物变形特性的影响进行了分析。研究表明,工程临近东环高速处在施工期间造成的东环高速最大沉降值为4.11mm,出现在紧挨管道一侧的桥墩底部处;运营期间即使当管道内为满水状态时,造成东环高速结构的最大水平及竖向位移仅为0.12mm及0.24mm,不会造成结构性损害。此外,土质流失松弛导致的基础强度降低并未对东环高速结构的安全造成明显影响,但应防范由此引发管道不均匀的水平及竖向位移。Based on the practical condition of combined water supply project of three rivers in the north water system construction in Guangzhou City, the deformation characteristic of Donghuan highway viaduct structure nearby the water pipe was analyzed in three kinds of conditions including the construction pro- gress of water pipe, the flow variation during the operation period, and the strength reduction of foundation under water pipe. Research showed that the maximum settlement of Donghuan highway viaduct structure during the construction progress of water pipe was 4. llmm, which wass located at the bottom of bridge pier near the water pipe. During operation period, even if the pipe was full of water, the maximum horizontal and vertical displacement of Donghuan highway viaduct structure was just 0.12 mm and 0. 24 mm. As a result, the structural damage would not happen at this situa- tion. In addition, the strength reduction of pipe foundation caused by soil erosion did not obviously influence the safety of Donghuan highway viaduct structure, but uneven horizontal and vertical displacement of water pipe caused by soil erosion should be prevented.

关 键 词：输水管道 施工 运营 周边构筑物 变形 MIDAS-GTS 位移 

分 类 号：TU991.36[建筑科学—市政工程]