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| 应用沉降速率推算剩余沉降及卸载时间 | |
| 引用本文： | 张长生,张伯友,刘国楠,魏勇作.应用沉降速率推算剩余沉降及卸载时间[J].地球科学与环境学报,2005,27(4):28-32. |
| 作者姓名： | 张长生 张伯友 刘国楠 魏勇作 |
| 作者单位： | 1. 中国科学院,广州地球化学研究所,广州,510640;中国科学院研究生院,北京,100039 2. 中国科学院,广州地球化学研究所,广州,510640 3. 铁道部科学研究院,深圳研究设计院,广东,深圳,518034 |
| 摘 要： | 在地基处理工程中工后沉降和沉降速率是卸载的重要标准，次固结沉降可以估算在一定范围内，工后沉降满足要求与否则主要由剩余主固结沉降控制。基于砂进固结理论和Asaoka方法可以推算出在堆载预压任意时间的沉降速率，运用沉降速率和剩余主固结沉降的关系，就可以推算出任意时间的主固结剩余沉降及卸载时间。在深圳—香港西部通道填海及地基处理工程中，此方法应用效果较好。 |
| 关 键 词： | 沉降速率 软粘土 地基处理 剩余沉降 工后沉降 卸载时间 |
| 文章编号： | 1672-6561（2005）04-0028-05 |
| 收稿时间： | 2005-01-14 |
| 修稿时间： | 2005年1月14日 |
Application of Settlement-Velocity to Calculate Residual Settlement and Unloading Time |
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| ZHANG Chang-sheng,ZHANG Bo-you,LIU Guo-nan,WEI Yong-zuo.Application of Settlement-Velocity to Calculate Residual Settlement and Unloading Time[J].Journal of Earth Sciences and Environment,2005,27(4):28-32. | |
| Authors: | ZHANG Chang-sheng ZHANG Bo-you LIU Guo-nan WEI Yong-zuo |
| Institution: | 1. Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; 2. Graduate School, Chinese Academy of Sciences, Beijing 100039, China; 3. Shenzhen Branch, China Academy of Railway Sciences, Shenzhen 518034, Guangdong, China |
| Abstract: | The settlement-velocity and post construction settlement including residual settlement and secondary consolidation settlement are very important unloading standard in foundation soil treatment project.The secondary consolidation settlement can be estimated within range,and the post construction settlement is mainly controlled by residual settlement.In Asaoka method,the settlement-velocity can be calculated in preloading anytime.By applying the relationship between settlement-velocity and residual settlement,the residual settlement and unloading time can also be computed.The relationship between settlement-velocity's logarithm and preloading time is linearity,thus the unloading time can be confirmed by the graph.The method is very effective in Shenzhen-Hongkong West Passage fill seafront and foundation soil treatment project,and may have preferable application value. |
| Keywords: | Settlement-velocity soft clay foundation soil treatment residual settlement post construction settlement unloading time |
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