整体式桥台桥梁台后土压力的季节性变化研究

整体式桥台桥梁台后土压力的季节性变化研究 English Version

摘要: 建立了整体式桥台与土共同作用的有限元模型 ,计算分析了季节性温度变化下台后土压力的分布曲线。以三跨连续混凝土板桥为工程实例 ,提出并验证台后设置EPS压缩层和置换轻填土两种方案 ,同时配合台后土体加筋 ,为整体式桥台设计提供理论依据
- 季节性温度变化 /
- 整体式桥台 /
- 土压力 /
- 有限元分析 /
- EPS材料
Abstract: In this paper,a FEM model for calculating earth pressures behind the abutment with considering the interaction of the earth and the abutment is established, the distribution curves of earth pressures behind the abutment under seasonal fluctuation of temperature are analyzed. With a practical example of a three span continuous concrete bans,two method are proposed and verified:a compressible inclusion of resilient EPS material is used or the EPS block geofoam is used as lightweight fill ,with geosynthetic as reinforcement (geogrid, geotextile or metallic elements). It offers a theoretical basis for design of the abutments.
- circular temperature loads /
- integral abutment bridge /
- earth pressure /
- FEM method /
- EPS(expanded polystyrene) material