Study On The Impact Of Tunnel Construction On The Adjacent Traffic Structures

In the tunnel construction process, Blasting would have an impact to close to built structures. After the Tunnel excavation, piling and transportation of the temporary spoil will have some impact on the bridge structure. Study on the stress wave of blasting generated by the law, reduce the temporary spoil piled up, the impact of transportation on the bridge structure. Thereby, which will be guidance of reference for similar projects.This paper as the tunnel excavation blasting of Chongqing Nanshan for the project background, compared with the Computer numerical simulation and field testing techniques, focus on analysis to study tunneling blasting effects of vibration for the bridge pile structure, And spoil heaps contained, Slag carriers around the bridge pile settlement.After the above analysis, and draw some conclusions:1、The tunnel excavation blasting, stress wave propagation is affected by the resistance factor of the rock and soil media, and initiation point and the structure of the relative position of factors.2、Reasonable protection calculation program, after Tunnel excavation, temporary spoil heap load around the bridge pile settlement is very small,And the comparison error of the test value is small, Slag carriers through the bridge pile adjacent areas, the effect on the vibration and stability of the bridge is Little.3、Reasonable choice for the calculation of the constitutive model Compared with The numerical calculation simulation results and test small numerical is very small, Thus, proving that the numerical simulation is a reliable.