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The curved ramp bridge after the dumping of the excavated earth: (a) photo of the bridge and the earth heap; (b) the plan view of the bridge and the earth heap.
Source publication
The surrounding surcharge has an adverse impact on the service performance of buildings and bridges, and it can endanger their structural safety, especially in soft soil areas. As one case study, the inclination accident of an expressway ramp bridge and its rectification are investigated in this study. Through the three-dimensional (3D) finite elem...
Citations
... The reinforcement was found to meet the load-bearing requirements and stabilize under strong seismic conditions. Shen [20] initially removed the additional loads causing tilting and then employed lateral pushing methods to correct the displacement of some bridge piers and expansion joints that exceeded displacement limits. Hu [21], based on bridge pier displacement monitoring and subgrade settlement observation data, established a relationship curve between pier displacement and settlement. ...
... The shear normal stiffness of the contact surface is approximately the same and can be calculated according to Equations (18)- (20), where E is the modulus of elasticity, is Poisson's ratio, and and are the shear modulus and bulk modulus of the abandoned dreg body around the anti-slide pile. ∆ is the minimum size of the mesh in the normal direction of the contact surface. ...
In highway reconstruction and expansion projects, the impact of the abandoned dreg body produced by the original highway on the new bridge project cannot be ignored. If the abandoned dregs are not handled properly, they will cause great threat to the operation of the new highway as well as to the safety of the surrounding environment and personnel. In this paper, based on a South China highway reconstruction and expansion project, a model of the abandoned dreg body, bridge pile and anti-slide pile is established with the help of finite difference software FLAC3D 5.0. The calculation results show that compared with burying the anti-slide pile, slope cutting is more effective for improving the stability of the abandoned dreg body. Under the action of vertical force intensity, the displacement of the top of the pile increases continuously, and the maximum bending moment of the pile body increases firstly and then decreases. The pile displacement and bending moment of the bridge pile increase significantly in the storm condition compared with the normal condition. In addition, the abandoned dreg body hazard prevention and control technical measures are studied. The impacts of different locations of anti-slide pile burial on bridge piles are analyzed and compared, and it is determined that the optimal location of anti-slide pile burial is the middle of the secondary slope.
