北山168窟顶板加固工程及施工过程跟踪监测分析  

Beishan Cave 168 roof reinforcement project and construction process tracking monitoring analysis

作　　者：刘珂源 蒋思维 冯太彬 陈卉丽 文加松 陶志刚[1,2] LIU Keyuan;JIANG Siwei;FENG Taibin;CHEN Huili;WEN Jiasong;TAO Zhigang(State Key Laboratory for Geomechanics&Deep Underground Engineering,China University of Mining&Technology(Beijing),Beijing 100083,P.R.China;School of Mechanics&Civil Engineering,China University of Mining&Technology(Beijing),Beijing 100083,P.R.China;Academy of Dazu Rock Carvings,Chongqing 402360,P.R.China;Bejing Guo Dian Water Resources&Electric Power Engineering Co.,Ltd.,Beijing100024,P.R.China)

机构地区：[1]中国矿业大学(北京)隧道工程灾变防控与智能建养全国重点实验室,北京100083 [2]中国矿业大学(北京)力学与土木工程学院,北京100083 [3]大足石刻研究院,重庆402360 [4]北京国电水利电力工程有限公司,北京100024

出　　处：《重庆大学学报》2024年第10期61-85,共25页Journal of Chongqing University

基　　金：重庆市科研机构绩效激励引导专项项目(cstc2021jxjl00005)。

摘　　要：大足石刻北山168窟在1000多年的卸荷作用下,洞窟内顶部裂隙纵横交错,存在着严重的结构稳定性问题。加固工程实施前洞窟顶板使用钢板、钢管等材料临时支撑以维护文物安全。但裂隙仍有延伸发展的趋势,且临时支撑钢板未做好防护措施,表面锈蚀严重,168窟仍时刻面临失稳坍塌的危险,急需进行抢险加固治理保护。由于该工程属于文保类项目,要求在施工过程中不能够对本体造成较大扰动,所以需要对其整个施工过程进行跟踪监测。基于此,本文首先利用数值模拟的手段对在现有钢板支护下石窟的变形机理进行分析,根据其分析结果对监测点位进行布设,并根据监测数据对整个施工过程石窟的稳定性进行监测,进行工程治理评价,该监测结果可为类似大型平顶石窟破碎顶板的监测及保护工程提供参考。After more than 1000 years of unloading effects,the roof of Beishan Cave 168 at Dazu Rock Carvings is riddled with intersecting cracks,posing significant structural stability problems.At present,the cave roof is temporarily supported by materials like steel plates and pipes,but cracks continue to spread,and the steel plates are severely corroded,leaving the cave at risk of instability and collapse.Emergency reinforcement and protection are urgently needed.Due to the cultural importance of the site,the reinforcement process must minimize disturbance,necessitating continuous monitoring throughout construction.This paper uses numerical simulation to analyze the deformation mechanism under existing support conditions,guiding the placement of monitoring points.Monitoring data from the entire construction process are analyzed to evaluate the engineering treatment.The results provide valuable insights for monitoring and protecting similar structured grotto roofs.

关 键 词：平顶石窟 监测 数值模拟 加固工程 

分 类 号：TU87[建筑科学]