明代石拱桥永昌桥的加固修缮技术研究  

Research on strengthening techniques for Yongchang Bridge, a stone arch bridge built in the Ming Dynasty

作　　者：张时琦 淳庆[1] ZHANG Shiqi;CHUN Qing(School of Architecture,Southeast University,Nanjing 210096,China)

机构地区：[1]东南大学建筑学院

出　　处：《文物保护与考古科学》2019年第6期54-61,共8页Sciences of Conservation and Archaeology

基　　金：国家自然科学基金重点项目资助(51138002)

摘　　要：为明晰明代石拱桥的结构性能,并提出适宜的加固修缮方法,以典型的明代石拱桥永昌桥为例进行研究。首先对其进行精确测绘,获得其准确可靠的几何信息;然后对其建筑形制、构造工艺及残损状况进行研究,为结构性能分析提供依据;接着利用ANSYS软件建立永昌桥主体结构的有限元模型,进行包括荷载影响分析、重要度分析和裂缝分析的结构性能研究;最后基于现状分析和结构性能研究,通过对比拱背套钢筋混凝土拱加固法和拱背粘贴碳纤维布加固法对石拱桥的结构性能的影响,提出了明代石拱桥永昌桥的加固修缮方法。研究成果可为同类型石拱桥的加固修缮提供参考。In order to evaluate the structural performance of stone arch bridges built in the Ming Dynasty and to suggest appropriate strengthening techniques, we studied Yongchang Bridge, an example of typical Ming stone arch bridges. First, the bridge was surveyed in detail to obtain its geometrical dimensions. Next, the architectural forms, configurations and damage were studied to provide bases for analysis. Then, the software of ANSYS was used to establish a finite element model of this bridge, to study the influence of loading, importance of structural elements and crack distribution. Finally, based on the analysis of actual status and structural performance, we proposed and compared two strengthening methods-the concrete strengthening method and the carbon fibre reinforced polymer(CFRP) strengthening method for the stone arch of this bridge in order to obtain an adaptive strengthening method for Yongchang Bridge. These results could be referred to in efforts to conserve similar ancient stone arch bridges.

关 键 词：石拱桥 建筑形制 结构性能 拱券加固 保护技术 

分 类 号：TU363[建筑科学—结构工程]