摘要
上海某海塘位于隧道上方,由于渗透破坏和堤身土流失等原因,造成坡面塌陷,栅栏板悬空、错断,亟需进行维修加固。为保障施工安全,采用FLAC3D数值模拟的方法计算海塘维修加固施工对于下部隧道位移的影响。计算过程分为抛石施工、高压旋喷桩施工两个阶段,计算结果表明工程实施对于隧道的影响在可控范围内。
A seawall in shanghai is located above the tunnel.Because of the seepage failure and seawall soil erosion,the slope is collapsed and the barrier board is suspended in air and is broken.It is urgently to maintain and reinforce the seawall.In order to insure the construction safety,FLAC3D numerical modeling method is used to calculate the influence of seawall reinforcement and maintenance on the lower tunnel displacement.The calculation is divided into two processes of riprap construction and high-pressure jet grouting pile construction.The calculation result shows that the influence of engineering practice on the tunnel is controllable.
出处
《城市道桥与防洪》
2021年第6期296-298,308,M0024,共5页
Urban Roads Bridges & Flood Control
关键词
海塘加固
数值模拟
隧道变形
seawall reinforcement
numerical modeling
tunnel deformation
