| 动荷载作用下边坡锚固系统合理设计探讨 |
| |
| 引用本文： | 王浩,陈峰,柳墩利,吴振祥,廖小平,刘庆元. 动荷载作用下边坡锚固系统合理设计探讨[J]. 防灾减灾工程学报, 2009, 29(6): 690-695,701 |
| |
| 作者姓名： | 王浩 陈峰 柳墩利 吴振祥 廖小平 刘庆元 |
| |
| 作者单位： | 福州大学环境与资源学院资源与城乡建设系,福州,350108;中国铁道科学研究院,北京,100081;福州大学环境与资源学院资源与城乡建设系,福州,350108;中铁西北科学研究院有限公司,兰州,730000;中铁西北科学研究院有限公司,兰州,730000 |
| |
| 基金项目： | 福建省青年人才创新基金项目，福州大学科技发展基金项目，福州大学人才基金项目 |
| |
| 摘 要： | 爆破、地震或列车振动等动荷载作用下,边坡锚固系统易产生锚筋松弛、夹具损伤、注浆体拉裂及界面粘结失效等情况,影响其预应力赋存状态、加固效果和耐久性。基于动荷载作用类型和锚固系统动力响应特征分析,提出了动载下不同地层内的锚固段合理结构设计方案和锚筋抗拉安全系数及锁定荷载的建议。动载下自由段(外锚固段)宜设计为全粘结型或增设多级反锚装置,形成岩土自锁锚固,以控制预应力损失和防止锚头或自由段破断造成突发性灾害;在水泥基灌浆体中掺入钢纤维或树脂纤维,可改善锚固体抗裂性能,提高其抗疲劳和抗冲击能力;建议优先采用防腐性能卓越的填充型环氧涂层钢绞线,以提高锚固体在动载破裂时的耐久性。
|
| 关 键 词： | 动荷载 边坡锚固系统 注浆材料 锚筋材料 |
Discuss on Reasonable Design of Slope Anchor System under Dynamic Loads |
| |
| WANG Hao,CHEN Feng,LIU Dun-li,WU Zhen-xiang,LIAO Xiao-ping,LIU Qing-yuan. Discuss on Reasonable Design of Slope Anchor System under Dynamic Loads[J]. Journal of Disaster Prevention and Mitigation Engineering, 2009, 29(6): 690-695,701 |
| |
| Authors: | WANG Hao CHEN Feng LIU Dun-li WU Zhen-xiang LIAO Xiao-ping LIU Qing-yuan |
| |
| Affiliation: | WANG Hao1,CHEN Feng1,LIU Dun-li2,WU Zhen-xiang1,LIAO Xiao-ping1,3,LIU Qing-yuan3(1.College of Environment and Resources,Fuzhou University,Fuzhou 350108,China,2.China Academy of Railway Sciences,Beijing 100081,3.Northwest Research Institute Co.,Ltd of China Railway Engineering Corporation,Lanzhou 730000,China) |
| |
| Abstract: | Under dynamic loads(such as blast, earthquake and train vibration),some adverse effects are produced on the slope anchor system including anchor bar relaxations,fixture damage,grout ripping and interface debonding,which can influence the occurrence of prestress,the reinforced impact and the durability of slope anchor system.Therefore based on the dynamic loads types and analysis on characteristics of dynamic response,the reasonable structure design of inner-anchoring section within different stratum under d... |
| |
| Keywords: | dynamic loads slope anchor system grouting material anchor bar material |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
