|
|
|
| CALCULATION METHOD STUDY OF ADDITIONAL STRESS OF HIGH FILLING CHANNELS OF THE NORTH WATER TRANSFER PROJECT |
| ZHANG Yu，YU Fei，CHEN Shanxiong，DAI Zhangjun，XIONG Shudan |
(State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，
Chinese Academy of Sciences，Wuhan，Hubei 430071，China) |
|
|
|
|
Abstract Due to the section form of the high filling channels has a great influence on the additional stress of filling body and foundation. A mechanism that the real additional stress below the theoretical value of each soil layer at the center line of high filling channel?s filling body was uncovered through the ANSYS FEM，after a calculation model with a variable section form was established. The additional stress correction coefficient of the filling body and additional stress ratio of the foundation in the high filling channels were proposed. The effects of the filling body?s slope ratio and high aspect ratio to its additional stress correction coefficient and the slope ratio，high aspect ratio and relative depth to the foundation?s additional stress ratio were both clarified. And a calculation method for the additional stress of the filling body and the foundation of the high filling channels was established accordingly. The study result shows that，it could easily and accurately calculated out the additional stress of each filled soil and the additional stress of different depths in the foundation at the center line of the channels by the calculation method，which only needed to know the slope ratio，top width， filling height，and specific weight of the filling body. And it has an important guiding significance to calculate the settlement process for the high filling channels in the North Water Transfer Project.
|
|
|
|
|
|
| [1] 周汉荣. 土力学与地基基础[M]. 武汉：武汉工业大学出版社，1996：28–30.(ZHOU Hanrong. Soil mechanics and foundation engineering[M]. Wuhan：Wuhan University of Technology Press，1996：28–30.(in Chinese))
[2] 刘毓氚，左广洲，陈福全. 加筋垫层应力扩散特性试验研究[J]. 岩土力学，2007，28(5)：903–908. (LIU Yuchuan，ZUO Guangzhou，CHEN Fuquan. Numerical research on stress distribution of geosynthetic reinforcement layer[J]. Rock and Soil Mechanics，2007，28(5)：903–908.(in Chinese))
[3] 陈义军，刘长武，徐 进. 山区公路斜坡填筑路堤应力形变特征及影响因素分析[J]. 岩土力学，2009，30(4)：1 051–1 056.(CHEN Yijun，LIU Changwu，XU Jin. Analysis of deformation stress feature and influential factors about road-dike on ramp in mountainous region expressway[J]. Rock and Soil Mechanics，2009，30(4)：1 051–1 056. (in Chinese))
[4] 王志亮，高 峰，殷宗泽. 考虑侧向变形的路堤沉降一维法计算修正系数研究[J]. 岩土力学，2005，26(5)：763–768.(WANG Zhiliang，GAO Feng，YIN Zongze. Study on modified factors for 1-D calculation of embankment settlement considering soil lateral deformation[J]. Rock and Soil Mechanics，2005，26(5)：763–768.(in Chinese))
[5] 陈仁朋，贾 宁，陈云敏. 桩承式加筋路堤受力机制及沉降分析[J]. 岩石力学与工程学报，2005，24(23)：4 358–4 367.(CHEN Renpeng，JIA Ning，CHEN Yunmin. Mechanism and settlement analysis of pile- supported and geogrid-reinforced embankments[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(23)：4 358–4 367.(in Chinese))
[6] 景宏君，苏如荣，丁 宁. 坝式高路堤应力分区研究[J]. 公路工程，2008，33(3)：21–24.(JING Hongjun，SU Rurong，DING Ning. Study of compaction degree zoning of earth dam-high fill embankment[J]. Highway Engineering，2008，33(3)：21–24.(in Chinese))
[7] 何兆益，周虎鑫. 高填方路堤填筑体沉降的三维有限元分析[J]. 重庆交通学院学报，2000，19(3)：58–62.(HE Zhaoyi，ZHOU Huxin. 3D finite element analysis of subsidence on high embankment[J]. Journal of Chongqing Jiaotong Institute，2000，19(3)：58–62.(in Chinese))
[8] CLOUGH R W，WOODWARD R J. Analysis of embankment stresses and deformation[J]. Journal of Soil Mechanics and Foundation Division，1967，93(4)：529–549.
[9] KULHAWY F H，DUNCAN J M. Stresses and movements in Oroville dam[J]. Journal of Soil Mechanics and Foundation Division，1972，98(7)：653–665.
[10] 殷宗泽. 高土石坝的应力与变形[J]. 岩土工程学报，2009，31(1)：1–14.(YIN Zongze. Stress and deformation of high earth and rock-fill dams[J]. Chinese Journal of Geotechnical Engineering，2009，31(1)：1–14.(in Chinese))
[11] 杨锡武，张永兴. 公路高填方涵洞土压力变化规律及计算方法研究[J]. 土木工程学报，2005，38(9)：119–124.(YANG Xiwu，ZHANG Yongxing. A study on the earth pressure theory for high fill culverts[J]. China Civil Engineering Journal，2005，38(9)：119–124.(in Chinese))
[12] 蒋关鲁，王力伟，杭红星. 路桥交界处地基附加应力修正计算方法[J]. 岩土工程学报，2013，35(2)：208–218.(JIANG Guanlu，WANG Liwei，HANG Hongxing. The modified additional stress calculation method of bridge approach foundation under the subgrade load[J]. Chinese Journal of Geotechnical Engineering，2013，35(2)：208–218.(in Chinese)) |
|
|
|
2015, Vol. 34 
