| 基于改性糯米灰浆的3种锚杆锚固性能对比研究 |
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| 引用本文： | 崔凯,王东华,谌文武,任晓峰,刘建,杨光.基于改性糯米灰浆的3种锚杆锚固性能对比研究[J].岩土力学,2018,39(2):498-506. |
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| 作者姓名： | 崔凯 王东华 谌文武 任晓峰 刘建 杨光 |
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| 作者单位： | 1. 兰州理工大学 甘肃省土木工程防灾减灾重点实验室，甘肃 兰州 730050； 2. 兰州大学 西部灾害与环境力学教育部重点实验室，甘肃 兰州 730000 |
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| 基金项目： | 国家自然科学基金项目（No. 41562015）；国家“十二五”科技支撑计划项目（No. 2014BAK16B02）；教育部长江学者创新团队支持计划项目（No. 2017IRT17-51）。 |
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| 摘 要： | 锚固浆液的类型及其与杆体、土体的兼容协调性问题是土遗址锚固领域的研究焦点。由糯米浆为胶凝主材和由黏土、粉煤灰为填充料组成的改性糯米灰浆与木锚杆、玻璃纤维增强塑料锚杆、钢筋锚杆组成了3种锚固系统。通过对3种锚固系统的原位锚固、拉拔试验和界面应力-应变监测，分析比较了3种锚固系统的破坏模式、极限荷载、荷载-位移特征，剖析了杆体-浆体界面应力分布传递规律和界面测点应变对荷载时步的响应程度。在初步分析其锚固机制的基础上，最终得出了此类基于改性糯米灰浆的3种锚固系统的锚固性能的优劣完全取决于杆体-浆体的受力机制、变形和强度特征所决定的力学兼容性的结论。该研究成果为以糯米浆为主材的改性浆液在土遗址锚固领域中的应用提供了依据和参考。
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| 关 键 词： | 改性糯米灰浆 土遗址 锚固性能 变形协调 力学兼容 |
| 收稿时间： | 2016-04-14 |
Comparative study of anchorage performance of three types of bolts fully grouted by modified glutinous rice mortar |
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| CUI Kai,WANG Dong-hua,CHEN Wen-wu,REN Xiao-feng,LIU Jian,YANG Guang.Comparative study of anchorage performance of three types of bolts fully grouted by modified glutinous rice mortar[J].Rock and Soil Mechanics,2018,39(2):498-506. |
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| Authors: | CUI Kai WANG Dong-hua CHEN Wen-wu REN Xiao-feng LIU Jian YANG Guang |
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| Institution: | 1. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province, Lanzhou University of Technology, Lanzhou, Gansu 730050, China; 2. Key Laboratory of Mechanics on Disaster and Environment in Western China of Ministry of Education, Lanzhou University, Lanzhou, Gansu 730000, China |
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| Abstract: | The type of anchorage slurry and its compatibility with blot and slurry are the research focus in the field of earthen sites’ anchorage. Glutinous rice soup was used as major cementing material modified by mixing with clay and fly ash. The experimental program examined three anchoring systems, i.e., wood, glass fiber reinforced plastic, and steel rebar, cemented by modified glutinous rice mortar. The test monitored the ultimate load, load-displacement characteristics, stress-strain on the blot-slurry interface, and the response extent of interfacial monitoring point strain on load step. The preliminary analysis of the mechanism of the anchorage concludes that the anchorage performance the system highly depends on the mechanical compatibility of blot-slurry, which is further determined by its force mechanism, deformation and strength characteristics ultimately. The research results provide a basis and reference for the application of modified mortar mainly made of glutinous rice soup in the field of earthen sites’ anchorage. |
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| Keywords: | modified glutinous rice mortar earthen sites anchorage performance deformation compatibility mechanical compatibility |
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