井阻随深度和时间变化的竖井地基固结解析解

郭霄; 谢康和; 吕文晓; 邓岳保

doi:10.11779/CJGE201506004

井阻随深度和时间变化的竖井地基固结解析解 English Version

1. 浙江大学滨海和城市岩土工程研究中心, 浙江杭州 310058；
2. 浙江省交通规划设计研究院, 浙江杭州 310006； 3. 杭州科技职业技术学院, 浙江杭州 311402；
4. 宁波大学岩土工程研究所, 浙江宁波 315211

基金项目: 国家自然科学基金项目（51179170, 51278453, 51308309）

详细信息

作者简介:
郭霄(1979– ), 男, 博士研究生, 高级工程师, 主要道路工程研究及设计。E-mail: 52968791@qq.com

中图分类号: TU43
计量
- 文章访问数: 0287
- HTML全文浏览量: 0
- PDF下载量: 0356
出版历程
- 收稿日期: 2014-05-18
- 发布日期: 2015-06-18

Analytical solutions for consolidation by vertical drains with variation of well resistance with depth and time

1. Research Center of Coastal and Urban Geotechnical Engineering, Zhejiang University, Hangzhou 310058, China;
2. Zhejiang Provincial Plan Design and Research Institute of Communications, Hangzhou 310006, China;
3. Hangzhou Polytechnic, Hangzhou 311402, China;
4. Institute of Geotechnical Engineering, Ningbo University, Ningbo 315211, China

摘要

摘要: 基于Deng 等关于井阻随深度线性增大和随时间指数增大的假设, 推导了这一假设条件下满足等应变径向固结基本方程及一切求解条件的竖井地基固结解析解。通过与现有常井阻固结解析解对比, 验证了本文解的正确性。利用本文解析解, 计算对比了不同井阻变化率（即参数A₂ 和A₃值）的平均孔压和平均固结度, 分析了不同时间因子、深度条件下, 井阻随深度和时间的变化对竖井地基固结特性的影响。结果表明：井阻随深度和时间增大将使竖井地基固结速率减小, 甚至使竖井加速地基固结的能力逐渐消失。
- 竖井地基 /
- 解析解 /
- 井阻 /
- 固结
Abstract: A new rigorous analytical solution is deduced from the equivalent strain governing equation for the consolidation by vertical drains on the basis of the assumption proposed by Deng et al (2013), that is, the well resistance increasing linearly with depth and exponentially with time. The solution is verified through the comparison with the results got from the existing analytical solution, in which the well resistance remains constant. Based on the new solution, the average excess pore water pressure and average degree of consolidation are compared with different rates of change of the well resistance (described by coefficient A₂ and A₃), and the influences of the depth and time-dependent well resistance on the rate of the consolidation by vertical drains are analyzed. It shows that the increase of the well resistance with depth and time will slow down the rate of the consolidation, and even make the ability of accelerating consolidation of vertical drains lose gradually.
- vertical drain /
- analytical solution /
- well resistance /
- consolidation

HTML全文

参考文献(13)

[1]	BARRON R A. Consolidation of fine-grained soils by drain wells[J]. Transaction ASCE, 1948, 113: 718–42.
[2]	YOSHIKUNI H, NAKANODO H. Consolidation of soils by vertical drains with finite permeability[J]. Soils and Foundations, 1974, 14(2): 35–46.
[3]	HANSBO S. Consolidation of fine-grained soils by prefabricated drains[C]// Proceeding 10th interjection conference on Soil Mechanics and Foundation Engineering. Rotterdam, 1981: 677–82.
[4]	谢康和, 曾国熙. 等应变条件下的砂井地基固结解析理论 [J]. 岩土工程学报, 1989, 11(2): 3–17. (XIE Kang-he, ZENG Guo-xi. Consolidation theories for drain walls under equal strain condition[J]. Chinese Journal of Geotechnical Engineering, 1989, 11(2): 3–17. (in Chinese))
[5]	CHAI J C, MIURA N, SAKAJO S, et al. Behavior of vertical drain improved subsoil under embankment loading[J]. Soils and Foundations, 1995, 35(4): 49–61.
[6]	BERGADO D T, MANIVANNAN T, BALASUBRAMANIAM A S. Proposed criteria for discharge capacity of prefabricated vertical drains[J]. Geotextiles and Geomembranes, 1996, 14(9): 481–505.
[7]	CHAI J C, MIURA N. Investigation of factors affecting vertical drain behavior[J]. Jouranl Geotechnical and Geoenvirometal Engineering, 1999, 125(3): 216–226.
[8]	MIURA N, CHAI J C. Discharge capacity of prefabricated vertical drains confined in clay[J]. Geosynthetics International, 2000, 7(2): 119–135.
[9]	CHAI J C, MIURA N, NOMURA T. Effect of hydraulic radius on long-term drainage capacity of geosynthetics drains[J]. Geotexttiles and Geomembranes, 2004, 22: 3–16.
[10]	BO M W. Discharge capacity of prefabricated vertical drain and their field measurements[J]. Geotextiles and Geomembranes, 2004, 22: 37–48.
[11]	KIM R, HONG S J, LEE M J, LEE W. Time dependent well resistance factor of PVD[J]. Marine Georesources & Geotechnology, 2011, 29(2): 131–144.
[12]	DENG Y B, XIE K H, LU M M. Consolidation by vertical drains when the discharge capacity varies with depth and time[J]. Computers and Geotechnics, 2013, 48: 1–8.
[13]	DENG Y B, XIE K H, LU M M, et al. Consolidation by prefabricated vertical drains considering the time dependent well resistance[J]. Geotextiles and Geomembranes, 2013, 36: 20–26.

施引文献(15)

期刊类型引用(7)

1.	徐长节，管凌霄，童立红，丁海滨. 列车荷载下高铁路基累积沉降研究综述. 华东交通大学学报. 2025(02): 1-14 . 百度学术
2.	董俊利，冷伍明，张期树，徐方，李亚峰. 新型预应力路基动力变形特性试验研究. 土木工程学报. 2024(12): 118-131 . 百度学术
3.	任连伟，李梁，王自强，邹友峰，顿志林，王树仁. 采空区场地高速铁路路基动力加载系统研发与模型试验. 煤炭学报. 2024(12): 4752-4767 . 百度学术
4.	薛凯仁，夏靖洪，刘开富. 循环荷载下桩网复合地基受力变形模型试验研究. 浙江理工大学学报(自然科学版). 2023(01): 157-166 . 百度学术
5.	王亚威. 箱式路基端承式复合地基静动力性能室内模型试验研究. 铁道建筑. 2023(10): 107-111 . 百度学术
6.	周鹏飞. X型截面现浇混凝土桩在软土上的公路施工性能. 安徽建筑. 2023(12): 150-151+174 . 百度学术
7.	陈贤可，刘海涛，吴健，刘开富. 循环荷载下桩网复合地基中桩的承载特性分析. 水利规划与设计. 2022(08): 123-127 . 百度学术