摘要
在自然环境的反复作用下,土遗址表层持续劣化并产生宏观病害,致使土遗址本体的稳定性存在隐患,合理评价土遗址的安全性为文物界所关注。以西北地区阿拉善盟定远营城墙为研究对象,定性分析城墙各段病害,测定城墙土样的基本物理指标和力学性能,运用ABAQUS软件进行数值模拟,对比分析自然状态和降雨条件下的城墙稳定性,发现随含水率提高城墙存在失稳的危险。在宏观劣化现象分析基础上,运用X射线衍射仪和扫描电镜技术对城墙内外部夯土的成分和微观结构进行研究,探讨城墙劣化的机理。对土遗址稳定性和微观劣化的分析方法揭示了残存土遗址的真实状态,有助于土遗址的保护和修复,避免土遗址修复方案的盲目性。
Under the repeated action of natural agents, the surface layer soil of a historical site eroded continuously, resulting in accumulated damage and further the instability of the site with hidden dangers. Therefore, reasonable evaluation of the ruins safety is of concern to cultural relics for protection. Taking the ancient wall of Dingyuanying in Alashan, Inner Mongolia, Northwest China, being built in 1730, as the study site, a qualitative analysis of the diseases in each section of the wall was carried out and the major physical indexes and mechanical properties of the collected soil samples were measured. The stability of the wall under the condition of natural state and rainfall was simulated and the data were analyzed with the ABAQUS software. Based on the macroscopic deterioration observed, the composition and microstructure of the rammed earth inside and outside the wall were studied by using X-ray diffractometer and scanning electron microscope. The mechanism of ruins deterioration was discussed. The analyses of the stability and micro deterioration of the wall ruins revealed the real state of the remaining earthen sites, which is helpful to the protection and restoration of such earthen sites, and avoids the aimless restoration of similar relics.
作者
岳建伟
李嘉乐
王思远
陈颖
邢旋旋
杨雪
YUE Jian-wei;LI Jia-le;WANG Si-yuan;CHEN Ying;XING Xuan-xuan;YANG Xue(School of Civil Engineering and Architecture,Henan University,Kaifeng 475004,China)
出处
《科学技术与工程》
北大核心
2021年第10期4159-4166,共8页
Science Technology and Engineering
基金
河南省科技厅基础与前沿研究项目(162300410012)
河南省教育厅科学技术研究重点项目(13A560048,14B560019)。
关键词
土遗址
微观结构
数值模拟
稳定性分析
遗址修复
earthen sites
microstructure
numerical simulation
stability analysis
ruins restoration
