|
|
|
| Study on anchorage performance of micro-sized flexible anchors in sandstone grottoes |
| PEI Qiangqiang1，2，3，4，BAI Yushu1，CUI Kai1，LIU Hong2，3，4，CUI Huiping2，3，4，LI Li5
|
| (1. Key Laboratory of Disaster Prevention and Mitigation in Civil Engineering of Gansu Province，Lanzhou University of Technology，Lanzhou，Gansu 730050，China；2. Dunhuang Academy，Dunhuang，Gansu 736200，China；3. National Ancient Mural Protection Engineering Technology Research Center，Dunhuang，Gansu 736200，China；4. Research Center for Conservation of Cultural Relics of Dunhuang，Dunhuang，Gansu 736200，China；5. Chinese Academy of Cultural Heritage，Beijing 100029，China)
|
|
|
|
|
Abstract Aiming at the characteristics of rich cultural information，prominent deformation and high sensitivity to disturbance for grotto roof，the micro-sized flexible anchors with little disturbance and high concealment can meet the strong tensile resistance to flexible deformation and plastic state of anchorage system. In order to reveal the effectiveness and scientificity of micro-sized anchorage technology used in rock mass of flat roof of sandstone grottoes，as well as to evaluate the anchorage performance of different series of anchors under various operating conditions，GFRP and NPR anchors with a diameter of 8 mm were selected and implanted with different apertures，the strain gauge was laid at the rod body-paste interface，and then the field pull-out test was conducted in cyclic loading mode. The results show that micro-diameter GFRP and NPR anchors have good anchoring performance and interface deformation coordination，and GFRP anchors have better ductility and shear resistance. What?s more，the anchoring effect performs best when the ratio of the diameter of the anchor span to that of the anchor rod reaches 2–2.25 times. The research provides a basis and reference for the application of micro-sized flexible anchors in the reinforcement engineering of rock mass of sandstone grottoes roof.
|
|
|
|
|
|
| [1] 李文军，王逢睿. 中国石窟岩体病害治理技术[M]. 兰州：兰州大学出版社，2006：1–4.(LI Wengjun，WANG Fengrui. Treatment technology on rock damages of Chinese Grottoes[M]. Lanzhou：Lanzhou University Press，2006：1–4.(in Chinese))
[2] 李最雄. 丝绸之路古遗址保护[J]. 中国文化遗产，2004，(3)：118–122. (LI Zuixiong. Protection of ancient ruins of the Silk Road[J]. Chinese Cultural Heritage，2004，(3)：118–122.(in Chinese))
[3] 李最雄，郭青林. 古遗址保护与加固技术发展现状与展望[C]// 2009—2010岩石力学与岩石工程学科发展报告. 北京：中国科学出版社，2010：179–183.(LI Zuixiong，GUO Qinglin. Development status and prospect of ancient site protection and reinforcement technology[C]// 2009—2010 Report on Advances in Rock Mechanics and Rock Engineering. Beijing：Science and Technology of China Press，2010：179–183.(in Chinese))
[4] 董广强. 锚筋固危崖 穿洞引水患——麦积山石窟维修加固与渗水治理工程[J]. 中国文化遗产，2016，13(2)：70–74.(DONG Guangqiang. Reinforcement and water seepage treatment for the Maijishan Grottoes[J]. China Cultural Heritage，2016，13(2)：70–74.(in Chinese))
[5] 姜怀英，黄克忠，冯丽娟. 克孜尔千佛洞一、二工段的维修与保护[J]. 文物保护与考古科学，1991，3(2)：35–42.(JIANG Huaiying，HUANG Kezhong，FENG Lijuan. Maintenance and Protection of Sections 1 and 2 of Kizil Thousand Buddha Caves[J]. Sciences of Conservation and Archaeology，1991，3(2)：35–42.(in Chinese))
[6] 樊锦诗，李传珠. 锚索新技术在榆林窟岩体加固工程上的应用[J]. 敦煌研究，2000，63(1)：119–122.(FAN Jinshi，LI Chuanzhu. The application of new technology of anchor cable in Yulin Grottoes rock reinforcement[J]. Dunhuang Research，2000，63(1)：119–122.(in Chinese))
[7] 王亨通. 炳灵寺石窟加固工程评价[J]. 丝绸之路，2000，(5)：29–32.(WANG Hengtong. Evaluation of the reinforcing project in Bingling Temple[J]. The Silk Road，2000，(5)：29–32.(in Chinese))
[8] 杨刚亮. 龙门石窟保护修复工程综述与探讨[J]. 石窟寺研究，2012：363–380.(YANG Gangliang. Review and discussion on the conservation and restoration project of Longmen Grottoes[J]. Studies of the Cave Temples，2012：363–380.(in Chinese))
[9] 新疆重点文物保护项目领导小组执行办公室. 克孜尔尕哈石窟抢险加固工程[N]. 中国文物报，2013–08–23.(Executive office of Leading Group of Key Cultural Relics Protection Projects in Xinjinag. Rescue and reinforcement project of Kizilgaha Grottoes[N]. China Cultural Relics News，2013–08–23.(in Chinese))
[10] 秋仁东，石玉成，徐舜华，等. 预应力锚索加固石窟岩体的地震动力响应研究[J]. 西北地震学报，2007，29(1)：49–54.(QIU Rendong，SHI Yucheng，XU Shunhua，et al. Study on dynamical response of grotto rock reinforced by prestress anchor cable under the seismic load[J]. North Western Seismological Journal，2007，29(1)：49–54.(in Chinese))
[11] 王 捷，王逢睿，杨 涛. 不同材质锚杆体加固石窟围岩的适用性研究[J]. 山西建筑，2013，39(19)：42–45.(WANG Jie，WANG Fengrui，YANG Tao. Applicability study on the strengthening of dangerous rock bodies of grottoes using anchors of different materials[J]. Shanxi Architecture，2013，39(19)：42–45.(in Chinese))
[12] 满 君，谌文武，孙光吉. 濒危薄型窟顶石窟加固新技术的应用研究[J]. 敦煌研究，2009，(6)：21–25.(MAN Jun，CHEN Wenwu，SUN Guangji. Study on the new reinforcement measure used for reinforcing folium on the top of grottoes[J]. Dunhuang Research，2009，(6)：21–25.(in Chinese))
[13] 范 潇，闫宏彬，孟令松，等. 云冈石窟第3窟后室顶板加固治理与监测[J]. 文物保护与考古科学，2021，33(2)：1–6.(FAN Xiao，YAN Hongbin，MENG Linsong，et al. Reinforce governance and monitoring of the roof of the rear chamber of the third cave of Yungang Grottoes[J]. Sciences of Conservation and Archaeology，2021，33(2)：1–6.(in Chinese))
[14] 汪万福，马赞峰，李最雄，等. 空鼓病害壁画灌浆加固技术研究[J].文物保护与考古科学，2006，18(1)：52–59.(WANG Wanfu，MA Zanfeng，LI Zuixiong，et al. Consolidating of detached murals through grouting techniques[J]. Sciences of Conservation and Archaeology，2006，18(1)：52–59.(in Chinese))
[15] 李鑫杰. 砂岩石窟窟顶浅层剥落病害治理微型锚杆技术室内实验研究[硕士学位论文][D]. 南昌：东华理工大学，2016.(LI Xinjie. Study of peeling disease treatment on the roof of sandstone grottoes by micro-anchor bolt technique[M. S. Thesis][D]. Nanchang：East China University of Technology，2016.(in Chinese))
[16] 柴新军，何春锋，李爱飞，等. 孔径对微型木锚杆加固石窟剥落病害抗拔力影响试验[J]. 桂林理工大学学报，2018，38(1)：100–105. (CHAI Xinjun，HE Chunfeng，LI Aifei，et al. Experiment on the effect of hole size on the pullout resistance of miniature wood anchors for reinforcing spalling disease in grottoes[J]. Journal of Guilin University of Technology，2018，38(1)：100–105.(in Chinese))
[17] 方 云，邓长青，李宏松. 石质文物风化病害防治的环境地质问题[J]. 现代地质，2001，15(4)：458–461.(FANG Yun，DENG Changqing，LI Hongsong. Environment geological problems in prevention and cure of weathering diseases of carved stone relics[J]. Geoscience，2001，15(4)：458–461.(in Chinese))
[18] 王彦武，韩增阳，郭青林，等. 甘肃庆阳北石窟寺水环境特征研究[J]. 西北大学学报：自然科学版，2021，51(3)：360–369.(WANG Yanwu，HAN Zengyang，GUO Qinglin，et al. Research on the characteristics of water environment in Beishiku Temple，Qingyang City，Gansu Province[J]. Journal of Northwest University：Natural Science，2021，51(3)：360–369.(in Chinese))
[19] 张景科，张理想，郭青林，等. 庆阳北石窟寺砂岩表层风化特征与地层岩性的关系研究[J]. 西北大学学报：自然科学版，2021，51(3)：344–352.(ZHANG Jinke，ZHANG Lixiang，GUO Qinglin，et al. The relationship between weathering characteristics of the sandstone surface and lithology of the North Grottoes at Qingyang[J]. Journal of Northwest University：Natural Science，2021，51(3)：344–352.(in Chinese))
[20] 中华人民共和国国家标准编写组. GB 50086—2015岩土锚杆与喷射混凝土支护工程技术规范[S]. 北京：中国计划出版社，2015.(The National Standards Compilation Group of People?s Republic of China. GB 50086—2015 Technical code for engineering of ground anchorages and shotcrete support[S]. Beijing：China Planning Press，2015.(in Chinese))
[21] 张景科，谌文武，和法国，等. 土遗址加固中 GFRP 锚杆锚固性能现场试验研究[J]. 工程地质学报，2014，22(5)：804–810.(ZHANG Jingke，CHEN Wenwu，HE Faguo，et al. Field experimental study on anchorage performance of GFRP at conservation earthen sites[J]. Journal of Engineering Geology，2014，22(5)：804–810.(in Chinese))
[22] 郭青林，裴强强，李志强，等. 岩土质遗址玻璃纤维锚杆锚固技术工艺改进现场试验研究[C]// 2017年全国锚固与注浆技术学术研讨会论文集. 北京：施工技术杂志社，2017：133–138.(GUO Qinglin，PEI Qiangqiang，LI Zhiqiang，et al. A study of field test on the improvement of anchorage technology of glass-fiber anchor in rocky soil site[C]// Proceedings of the 2017 National Symposium on Anchorage and Grouting Technology. Beijing：Construction Technology Magazine，2017：133–138.(in Chinese))
[23] 崔 凯，王东华，谌文武，等. 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.(CUI Kai，WANG Donghua，CHEN Wenwu，et al. 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.(in Chinese))
[24] 张景科，陈鹏飞，谌文武，等. 夯土–水硬石灰与石英砂浆液–木锚杆锚固系统性能[J]. 土木建筑与环境工程，2015，37(3)：86–93. (ZHANG Jinke，CHEN Pengfei，CHEN Wenwu，et al. Anchor performance of wood bolt fully grouted by natural hydraulic lime and quartz sand slurry[J]. Journal of Civil，Architectural and Environmental Engineering，2015，37(3)：86–93.(in Chinese))
[25] 陶志刚，郭爱鹏，何满潮，等. 微观NPR锚杆静力学特性及其工程应用研究[J]. 岩土力学，2022，43(3)：808–818.(TAO Zhigang，GUO Aipeng，HE Manchao，et al. Research on static characteristics of micro NPR bolt and its engineering applicability[J]. Rock and Soil Mechanics，2022，43(3)：808–818.(in Chinese)) |
| [1] |
HUANG Man1, 2, WANG Yuhao1, 2, TAO Zhigang3, HONG Chenjie1, 2*, WENG Hanqian3, ZHANG Guangtao1, 2, ZHANG Haijiang1, 2. Size effect on anchorage resistance of Quasi-NPR bolt[J]. , 2026, 45(5): 1477-1488. |
|
|
|
|
2023, Vol. 42 
