Inner Mongolia Traffic Design and Research Institute

Hohhot, China

Inner Mongolia Traffic Design and Research Institute

Hohhot, China
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Liu B.,Beijing Jiaotong University | Li Y.,Beijing Jiaotong University | Wang Q.,Inner Mongolia Traffic Design and Research Institute | Gao Y.,Inner Mongolia Traffic Design and Research Institute
Beijing Jiaotong Daxue Xuebao/Journal of Beijing Jiaotong University | Year: 2013

Because long-span buried corrugated steel arch bridge structure works under pressure of the backfill soil, internal force will have a large increase as the span increases, it is necessary to take strengthening measures for the corrugated plate arch ring structure. Based on a circular arch bridge with 16 m span, four three-dimensional finite element models considering soil-structure interaction, which are no strengthening scheme, arch foot strengthening, ring strengthening and two-direction strengthening in the ring and transverse directions with concrete composite ribs in arch ring, are established to compare the stress and deformation of the structures. Some conclusions can be made that long-span buried corrugated steel arch bridge structure has an uneven stress distribution. Structure performance can be improved significantly by concrete composite ribs in the arch foot, where has the maximum structural stress. It can be improved by ribs in the ring, too, but structure will have a poor integrity. Both the structural performance and integrity can be improved significantly by ribs in two-direction.


Wang Q.,Beijing Jiaotong University | Wang Q.,Inner Mongolia Traffic Design and Research Institute | Liu B.,Beijing Jiaotong University | Li Y.,Beijing Jiaotong University | Zhang M.,Beijing Jiaotong University
Beijing Jiaotong Daxue Xuebao/Journal of Beijing Jiaotong University | Year: 2012

The finite element model considering the soil-structure interaction has been built in order to analyze the rigidity and flexibility of the buried corrugated steel pipe culverts and its influence to the mechanical behaviors of the whole structure. By changing the waveform and the thickness of the corrugated steel plate under keeping other parameters constant condition, stresses and displacements of the pipe culverts and soil displacement distributions have been calculated and contrasted. The rigidity and flexibility of the pipe culvert, the characteristics of stresses, displacements of the pipe culverts and soil displacement distributions under different types of cross-section have been analyzed. The results show that the changes of the sectional characteristic parameters of the corrugated steel plates can lead to the changes of the rigidity and flexibility of the pipe culverts. The deformation of the pipe culvert is reduced with increasing the section stiffness of corrugated steel plate, but the earth pressure undertaken by the pipe and the stress of the pipe are also increased. So the section type of the corrugated steel plate should be rationally chosen by considering both stress and deformation of the structure.


Liu B.,Beijing Jiaotong University | Yang C.,Beijing Jiaotong University | Zhou K.,Inner Mongolia Traffic Design and Research Institute
Wuhan Ligong Daxue Xuebao (Jiaotong Kexue Yu Gongcheng Ban)/Journal of Wuhan University of Technology (Transportation Science and Engineering) | Year: 2012

The simplified two-dimension plane strain finite element model considering the soil-structure interaction is established according to parameters of a real bridge in Inner Mongolia. The variation law of the force and deformation of the bridge with ten different springing displacement conditions are calculated by imposing coercive displacements of the model. The analysis results show that horizontal displacement of the arch springing has much more impact on the bridge than vertical displacement and the deformation increased obviously and the stress of the arch ring turned to tension from compression. The uneven settlement of the springing has more negative impact than the uniform settlement. Especially, the deformation and the stress, both tension and compression, increased notably when the uneven horizontal and the vertical displacement occurred simultaneously. The support reactions are also varying with the springing displacement. The uneven springing displacement even resulted in a significant change of the direction of the reaction force. So, although the corrugated steel plate arch bridge has strong ability to adapt the deformations, it is necessary to take some control methods to avoid the springing displacement.

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