| 冻土中木桩荷载传递的时间效应分析 |
| |
| 引用本文： | 舒春生,吴亚平,马巍,孙建忠,彭万巍. 冻土中木桩荷载传递的时间效应分析[J]. 兰州交通大学学报, 2006, 25(1): 17-19 |
| |
| 作者姓名： | 舒春生 吴亚平 马巍 孙建忠 彭万巍 |
| |
| 作者单位： | 兰州交通大学土木工程学院 甘肃兰州730070(舒春生，吴亚平，孙建忠)，中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室 甘肃兰州730000(马巍，彭万巍) |
| |
| 基金项目： | 中国科学院资助项目，国家重点实验室基金 |
| |
| 摘 要： | 给出了冻土中木桩桩土相对位移的计算方法,并根据约束样条法拟合出来的应变曲线来推求桩侧单位冻结应力,同时分析了桩土相对位移和桩侧单位冻结应力随时间的变化规律,而桩端阻应力由电阻应变式土压力计直接测出.由于冻土具有蠕变特性,重点分析了时间效应对荷载传递的影响,对提出冻土中木桩的荷载传递函数模型以及进一步揭示冻土区的桩土作用机理将起到一些重要的作用.
|
| 关 键 词： | 冻土 木桩 位移 应力 荷载传递 |
| 文章编号： | 1001-4373(2006)01-0017-03 |
| 收稿时间： | 2005-10-17 |
| 修稿时间： | 2005-10-17 |
Effect of Time on the Load-transfer of Lumber Piles in Frozen Soil |
| |
| Shu Chunsheng,Wu Yaping,Ma Wei,Sun Jianzhong,Peng Wanwei. Effect of Time on the Load-transfer of Lumber Piles in Frozen Soil[J]. Journal of Lanzhou Jiaotong University, 2006, 25(1): 17-19 |
| |
| Authors: | Shu Chunsheng Wu Yaping Ma Wei Sun Jianzhong Peng Wanwei |
| |
| Affiliation: | 1. School of Civil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; 2. State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Researeh Institute, Chinese Academy of Sciences, Lanzhou 730000, China |
| |
| Abstract: | The method of relative displacement calculation is put forward and the friction stress based on repaired strain curve is figured out. On the other hand, the rule of relative displacement and the friction stress varied with time is analysed, and the bottom-retain-stress is measured by press box. Because of the characteristic of creep, the effect of time on load-transfer is specially analysed, which will play an important role to put the fuctional modleof load-transferand and to open out the theory of pile and soil in frozen soil. |
| |
| Keywords: | frozen soil lumber pile displacement stress load-transfer |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
