临近水利枢纽工程的扶壁式挡墙在施工期和运营期的受力变形特性研究

Mechanics and Deformation Characteristic of Buttressed Retaining Wall of Adjacent Key Water-control Project during Construction and Operation

以江苏省沿江城际铁路工程和机厂河水利枢纽工程为例,运用有限差分软件FLAC,对城际铁路常州段桥梁基坑工程与水利枢纽工程的相互影响展开研究。分析了施工期的护岸钢筋混凝土扶壁式挡土墙变形和内力特征,以及水利枢纽蓄水和跌水期扶壁式翼墙变形。结果表明:在桥梁工程的施工期,扶壁式翼墙和基坑变形都较小,满足规范要求;但在跌水期,翼墙有发生滑移破坏的危险,应及时监测和加固。

Based on the interurban railway project along the river and Jichanghe key water-control project in Jiangsu province, the interactive influence of bridge foundation pit excavation and key water-control project of Changzhou Section of interurban railway is studied using FLAC software with finite difference method. The deformation and internal force of reinforced concrete buttressed retaining wall during construction and the deformation of buttressed wing wall of key water-control project during impound and recession period was analyzed. The results show that the deformation of foundation pit of the bridge and buttressed wing wall during construction was small and met the technical standard. However, there is danger of slippage at position of buttressed wing wall, and monitoring and reinforcement should be implemented timely during recession period.