The minimum clear distance between the intersection bridge pile foundation and the shield tunnel is only 0.8 m.In order to analyze the influence of tunnel construction on the bridge,firstly simulates the tunnel construction process,and then checks the bridge ac-cording to the simulation results and control values.The results show that:①the settlement and horizontal displacement of pile foundation are within the control value range,which can meet the Specifications for Design of Foundation of Highway Bridges and Culverts:JTG 3363-2019[1]requirements;②Pile foundation settlement has little influence on beam shear force and mid-span bending moment,but great influ-ence on end negative bending moment.Secondly,under the condition of controlled settlement 10 mm,the bending resistance,shear capacity and crack width of the beam meet the Specifications for Design of Reinforced Concrete and Prestressed Concrete Highway Bridges and Cul-ver:JTJ 023-85[2]requirements;③The pile foundation is calculated by hollowing out the soil on one side,the flexural bearing capacity and crack width meet the Literature[2]requirements.
shield tunnelintersection bridgepile foundation settlementcontrol value
NETL
NSTL
维普
万方数据
