[1]朱才辉,郭炳煊.古建筑台基水害探测分析及防渗措施[J].自然灾害学报,2018,(02):059-67.[doi:10.13577/j.jnd.2018.0207]
 ZHU Caihui,GUO Bingxuan.Water hazard detection and waterproof measures in the foundation of ancient building[J].,2018,(02):059-67.[doi:10.13577/j.jnd.2018.0207]
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古建筑台基水害探测分析及防渗措施
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《自然灾害学报》[ISSN:/CN:23-1324/X]

卷:
期数:
2018年02期
页码:
059-67
栏目:
出版日期:
2018-04-28

文章信息/Info

Title:
Water hazard detection and waterproof measures in the foundation of ancient building
作者:
朱才辉 郭炳煊
西安理工大学 岩土工程研究所, 陕西 西安 710048
Author(s):
ZHU Caihui GUO Bingxuan
Institute of Geotechnical Engineering, Xi’an University of Technology, Xi’an 710048, China
关键词:
古建筑台基水害探测地质雷达土电阻率防渗措施
Keywords:
foundation of ancient building (FAB)water hazard detectionground penetrating radarsoil electrical resistivitywaterproof measures
分类号:
TU398+.9;X43
DOI:
10.13577/j.jnd.2018.0207
摘要:
为研究某古建筑台基内部的水害时-空分布特征及其形成机理,采用微型土壤水分计(TDR)、土壤电阻率(SER)和地质雷达(GPR)等方法,针对台基水分场开展了系统的原位监测研究,基于电磁波理论、电阻率理论,深入分析了台基水害根源、降雨后水分场空间分布特征和水分迁移规律,提出了相应的防治水害措施。研究表明,古建筑台基的内外部水分场分布不均,台基底部饱和度高于台基上部,降雨期间台基上部受降雨入渗影响较大,且其水分有向台基外墙、劵门拱圈及地基下部迁移和渗漏的趋势;揭示了台基顶部防渗层年久失效、内部夯土发生湿陷软化形成渗漏通道的深层病害问题;通过更换防渗层、局部超细水泥或PS溶液灌浆、改变台基顶部排水坡度和采取强制排水措施等方法,能够降低台基内的含水率和增强其稳定性。
Abstract:
To investigate the spatial-temporal distribution and formation mechanism of the water hazard in the foundation of ancient building (FAB), the mini time domain reflection system (TDR), soil electrical resistivity (SER) and ground penetrating radar (GPR) methods are employed to test the moisture field. The causation of water hazard, spatial-temporal distribution and migration of water after the rainfall are analyzed in depth based on the electromagnetic wave theory and SER theory, and the waterproof measures of ABB are also proposed. The test results show that the water in the FAB is unevenly distributed, the saturation degree of rammed soil in the bottom of the FAB is higher than that of the top of the FAB. The rainfall has a greater influence on the top of the FAB than the bottom of the FAB, and the water has an tendency to migrate from the top of the FAB to the external wall, the arch of the city-gate and rammed soil foundation. The deep diseases such as long years disrepair of impervious layer and the leakage passage induced by softening of collapsible compacted loess are revealed. The water content in the FAB is reduced and its stability can be improved by using the following waterproof measures:replacing the impervious layer, grouting in local rammed soil with superfine cement or PS filtration, changing the drainage slope of the top of the foundation and taking enforcement drainage measures.

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备注/Memo

备注/Memo:
收稿日期:2017-04-25;改回日期:2017-08-18。
基金项目:国家自然科学基金项目(51678484);陕西省黄土力学与工程重点实验室科研计划项目(16JS073)
作者简介:朱才辉(1983-),男,副教授,博士,主要从事黄土力学与工程、原位监测技术等方面的研究工作.E-mail:zhucaihui123@163.com
更新日期/Last Update: 1900-01-01