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| 基坑土钉拉力现场试验研究 | |
| 引用本文： | 吴超凡,邱占林,杨为民,李铁军.基坑土钉拉力现场试验研究[J].工业建筑,2012,42(6):112-116. |
| 作者姓名： | 吴超凡 邱占林 杨为民 李铁军 |
| 作者单位： | 1. 龙岩学院资源工程系,福建龙岩364012 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008 2. 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州,221008 3. 国土资源部新构造运动与地质灾害重点实验室,北京100081 中国地质科学院地质力学研究所,北京100081 4. 龙岩学院资源工程系,福建龙岩,364012 |
| 基金项目： | 国家“十二五”科技支撑计划课题资助项目，福建省自然科学基金项目，2010年度福建省教育厅A类科技项目 |
| 摘 要： | 通过对国际烟草大厦深基坑土钉支护内力的现场测试,对土钉拉力的分布变化规律开展研究。现场测试结果表明:土钉在基坑边坡的中部承受拉力最大,上、下部受力较小,其最大拉力作用点出现在近面层2.0 m处,与基坑边坡潜在滑动面趋于一致。土钉承受拉力具有开挖效应和时间效应,随时间增长土钉拉力增加,基坑每一步开挖,已设置土钉的拉力都有大幅提高,至开挖结束一段时间后,土钉拉力趋于稳定。因而,基坑开挖后应立即进行土钉支护,以充分发挥土钉的加筋作用。 |
| 关 键 词： | 土钉挡墙 深基坑 支护 拉力试验 |
RESEARCH ON THE TENSILE FIELD-TESTING OF THE SOIL NAILING RETAINING WALL IN DEEP EXCAVATION |
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| Wu Chaofan,Qiu Zhanlin,Yang Weimin,Li Tiejun.RESEARCH ON THE TENSILE FIELD-TESTING OF THE SOIL NAILING RETAINING WALL IN DEEP EXCAVATION[J].Industrial Construction,2012,42(6):112-116. | |
| Authors: | Wu Chaofan Qiu Zhanlin Yang Weimin Li Tiejun |
| Affiliation: | 1(1.School of Resource Engineering,Longyan University,Longyan 364012,China;2.State Key Laboratory of Geomechanics and Deep Underground Engineering,China University of Mining and Technology,Xuzhou 221008,China; 3.Key Laboratory of Neotectonic Movement & Geohazard,Ministry of Land and Resources,Beijing 100081,China; 4.Institute of Geomechanics,Chinese Academy of Geological Sciences,Beijing 100081,China) |
| Abstract: | By the site test of soil nailing tensile force in the soil nailing retaining wall of the International Tobacco Building in Longyang of Fujian,the distribution of soil nailing tensile fore was researched.The investigated results showed that the maximum tensile force of soil nails appeared at the middle part,the smaller tensile force appeared at the top part and the bottom part of retaining wall.The maximum tensile force emerged at the distance of 2 meters from the surface of retaining wall,which was in accordance with potential slip surface.The tensile force of soil nails had time effect,increasing with time flowing and excavating,and gradually tended to stable at a period of time after finishing excavation.In orde to put into full play of the soil nailing retaining wall,the soil nails should be constructed as quickly as possible. |
| Keywords: | soil nailing retaining wall deep excavation supporting tensile testing |
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