六和塔保养维修悬臂脚手架的模型试验研究

Model Test Study on the Preventive Maintenance with Cantilever Scaffold of the Pagoda of Six Harmonies

六和塔为国保级文物单位,距今最近的一次维修于上世纪90年代,现需重新对六和塔进行保养性维修,维修的同时要保证游客仍能正常参观。本次保养性维修采用新型索吊桁架悬挑脚手架,现对该脚手架采用数值模拟和1∶1模型试验进行加载测试,以验证其完成六和塔保养性维修工作的适用性。将数值模拟和模型试验的结果进行对比研究,在对两者的受荷性能进行对比分析后,得出该脚手架的杆件中产生的应力小于结构的临界荷载强度,应变及整体变形均符合国家规范的要求,因此该脚手架能够顺利的应用于该工程中,为开展六和塔的保养性维修工作提供可靠的技术支持。

Pagoda of Six Harmonies is a protected unit of cultural relics in China whose last maintenance dates back to the 1990s.Now Pagoda of Six Harmonies needs to do some preventive maintenance which required protecting the visitors' normal visit.This time a new type of suspension truss cantilever scaffold is used in the engineering.Numerical simulation and 1:1 model load test are employed to prove the serviceability of applying the suspension truss cantilever scaffold to maintain the Pagoda of Six Harmonies.The result of the numerical simulation and the model test is used to comparative study.Comparing the loading performance shows the stress of the members smaller than the structure's critical load intensity.In the meanwhile,the strain and deformation conform to the national standard.Therefore,the scaffold can be applied to the engineering successfully.This paper provides a reliable technical support for the preventive maintenance of the pagoda of Six Harmonies.