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| 桥台后路堤多级加载下黏弹性饱和成层软土地基一维固结分析 | |
| 引用本文： | 刘萌成,朱洪州,彭卫兵.桥台后路堤多级加载下黏弹性饱和成层软土地基一维固结分析[J].中南大学学报(自然科学版),2011,42(4). |
| 作者姓名： | 刘萌成 朱洪州 彭卫兵 |
| 作者单位： | 1. 浙江工业大学建筑工程学院,浙江杭州,310014;重庆交通大学土木建筑学院,重庆,400074 2. 重庆交通大学土木建筑学院,重庆,400074 3. 浙江工业大学建筑工程学院,浙江杭州,310014 |
| 基金项目： | 浙江省自然科学基金，重庆交通大学山区道路建设与维护技术重庆市重点实验室开放基金 |
| 摘 要： | 将桥台后路堤荷载简化为横截面梯形分布的半无限条形荷载,基于Boussinesq弹性力学解答推导得到桥台后软土地基内竖向附加应力计算公式,由此考虑初始孔隙水压力非均匀分布特性.结合桥台后路堤多级加载的Laplace变换递推公式,运用Laplace变换及其逆变换方法求解Terzaghi固结与Kelvin黏弹性应力应变联合微分方程,获得桥台后路堤多级加载条件下黏弹性饱和成层软土地基固结变形解答.算例分析结果表明:该解答具有合理性和可靠性,计算结果可为桥台后软土地基沉降分析提供参考. |
| 关 键 词： | 黏弹性成层地基 固结分析 桥台后路堤荷载 多级加载 |
One-dimensional consolidation analysis of viscoelastic saturated layered soft soils under multi-stage loading of bridge approach embankment |
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| LIU Meng-cheng,ZHU Hong-zhou,PENG Wei-bing.One-dimensional consolidation analysis of viscoelastic saturated layered soft soils under multi-stage loading of bridge approach embankment[J].Journal of Central South University:Science and Technology,2011,42(4). | |
| Authors: | LIU Meng-cheng ZHU Hong-zhou PENG Wei-bing |
| Institution: | LIU Meng-cheng1,2,ZHU Hong-zhou2,PENG Wei-bing1 (1.College of Civil Engineering and Architecture,Zhejiang University of Technology,Hangzhou 310014,China,2.School of Civil Engineering Architecture and Construction,Chongqing Jiaotong University,Chongqing 400074,China) |
| Abstract: | By simplifying the bridge-approach embankment load into a trapezoidal semi-infinite strip load,the formulation of the vertical additional stress in the soft soils was derived from the Boussinesq's solution in the elastic mechanics and was applied to describe the non-uniform distribution of the initial pore water pressures.In combination with the recursive formulation of the Laplace transform under the multi-stage loading of bridge approach embankment,the one-dimensional consolidation solution of the viscoel... |
| Keywords: | viscoelastic layered soft soils consolidation analysis bridge approach embankment load multi-stage loading |
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