土工格栅加筋与排水板联合处理软土地基的弹塑性有限元分析研究
Elasto-plastic Finite Element Analysis of Geogrid Reinforced and Plastic Board-Drained Foundation
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- DOI:
- 作者:
- 宋飞, 闫澍旺
SONG Fei, YAN Shu-wang
- 作者单位:
- 天津大学岩土工程研究所, 天津 300072
Research Institute of Geotechnical Engineering, Tianjin University, Tianjin 300072, China
- 关键词:
- PLAXIS程序;比奥固结理论;土工格栅加筋;塑料排水板;软土路基
PLAXIS software;Biot's consolidation theory;geogrid reinforcement;plastic drain board;soft soil foundation
- 摘要:
- 根据岩土工程的比奥固结理论,采用弹塑性有限元方法分析研究了塑料排水板和土工格栅加筋加固软土地基的效果和机理。分析结果表明,加筋结合排水板处理软土路基能够加速路基的固结,缩短软土层的压缩排水时间,提高路基的抗剪强度,减少路堤的沉降、不均匀沉降和侧向位移,提高路堤的整体稳定性。二者相互配合,可大大缩短工期。
The effectiveness and mechanism of soft soil foundation treatment with geogrid reinforced and plastic board-drained foundation are analyzed by employing the PLAXIS software in combination with Biot's consolidation theory. The results show that the geogrid reinforcement cooperated by plastic drain boards can quicken the consolidation rate of soft soil foundation, increase the shearing strength of soft soil, reduce the embankment's settlement, uneven settlement and horizontal displacement. Therefore, the treatment technique can improve the integrated stability of embankment and greatly shorten the construction period.2005,1(1): 34-39 收稿日期：2004-7-27分类号：TU471.8作者简介：宋飞(1980-)男,陕西汉中人,天津大学岩土工程硕士,主要从事岩土工程数据值分析方面的研究工作.参考文献：
[1] 钱家欢,殷宗泽.土工原理与计算(第2版)[M].北京:中国水利水电出版社,1996.
[2] 宋飞,赵立鹏,闫澍旺.弹塑性有限元法确定土工格栅加筋路堤的沉降及承载力[J].勘察科学技术,2003,(6):16-20.
[3] 刘汉龙,吴维军,高玉峰.土工织物加固堤防非线性有限元分析[J].岩土力学,2003,24(1):79-82.
[4] 单炜,王平,张爱民.应用塑料排水板加固软土地基效果的理论分析[J].东北林业大学学报.2002,30(6):66-68.
[5] 朱湘,黄晓明,邓学均.土工格栅加筋路堤机理研究[J].公路交通科技,2002,17(1):1-4.
[6] 《土工合成材料应用手册》编写委员会.士工合成材料工程应用手册[M].北京:中国建筑工业出版社,1994.
[7] 宋二祥.土工结构安全系数的有限元计算[J].岩土工程学报,1997,19(2):1-7.