登录
注册
E-alert
登录
注册
E-alert
PREDICTION OF EXCESS PORE WATER PRESSURE RESULTED FROM STATIC PRESSED PILE AND TIME-DEPENDENT PILE ULTIMATE BEARING CAPACITY
-
摘要: 引入时间、深度参数，分析饱和软土中静压桩单桩引起的超静孔隙水压力，给出了超静孔隙水压力及其消散的准三维解析解。基于有效应力原理，从超静孔隙水压力的消散和桩周土的固结出发，结合桩土接触面的破坏形式，获得了考虑时间效应的单桩承载力的解析解，实现了对其任意时刻单桩承载力的预测。通过两个工程实例表明了计算方法的正确可行。Abstract: Time and depth are adopted to analyse excess pore water pressure caused by static pressed pile in soft clay, and a 3D analytical formula is achieved. Based on the effective stress principle and according to dissipation of excess pore water pressure, consolidation of the clay around the pile and failure mode of pile- soil interface, an analytical solution to predict time- dependent ultimate bearing capacity of the driven pile is obtained. Results from the presented analytical solution are in agreement with those of the site tests.
-
Key words:
- static pressed pile /
- excess pore water pressure /
- ultimate bearing capacity /
- time effect /
- interface
-
[2] Chow F C, Jardine R J, Nauroy J F, et al. Time-Related Increases in the Shaft Capacities of Driven Piles in Sand. Geotechnique, 1997,47(2):353～361 Chow F C, Jardine R J, Brucy F, et al. Effects of Time on Capacity of Pipe Piles in Dense Marine Sand. Journal of Geotechnical and Geoenvironmental Engineering, 1998,124(3):254～264 [3] Long J H, Kerrigan J A, Wysockey M H. Measured Time Effects for Axial Capacity of Driven Piling. Transportation Research Record. 1999:8～15 [4] Fleming W G K, W K Elson. Pile Engineering. 2nd Edition.New York:John Wiley Sons, 1992.118～122 [5] 宰金珉,宰金璋.高层建筑分析与设计.北京:中国建筑工业出版社,1993 [6] 叶为民,黄雨,唐益群,等.饱和软土中打入式预制桩单桩承载力的时效.岩土力学,2000,21(4):367～369 [7] 陈文,施建勇,龚友平,等.饱和软粘土中静压桩挤土效应的模拟实验研究.河海大学学报,1999(3):103～109 [8] 王伟.沉桩引起的超孔隙水压力的预测及其应用:[硕士学位论文].南京:南京工业大学,2002 [9] 王伟,宰金珉,王旭东.沉桩引起的三维超静孔隙水压力计算及其应用.岩土力学,2004,25(5):774～777 [10] 唐世栋.用有效应力原理分析桩基承载力的变化全过程:[博士学位论文].上海:同济大学,1990 [11] 王伟,宰金珉,王旭东.考虑时间效应的预制桩单桩承载力解析解.南京工业大学学报,2003,25(5):13～16 -
点击查看大图
计量
- 文章访问数: 140
- HTML全文浏览量: 5
- PDF下载量: 158
- 被引次数: 0
下载:
