明代九孔石拱桥

—— 蒲塘桥修保护技术研究

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中图分类号：U445.72 文献标志码：ADOI：10.19490/j.cnki.issn2096-698X.2025.04.087-099

Abstract：Putang Bridge is a typical stone arch bridge fromthe Ming Dynasty.After years use，the bridge body has developed various damages and conditions，and research on adaptive conservation techniques that meet both aesthetic preservation and structural safety requirements is urgently needed. To ensure its scientific preservation， this paper combines a variety modern technologies to construct the framework for the repair and protection Putang Bridge. Through on-site investigation and the use 3D scanning technology， a point cloud model Putang Bridge was established. The types and areas damages Putang Bridge were mapped in detail，and the causes deterioration examined; Nondestructive testing using rebound methods， X-ray fluorescence spectroscopy（XRF）， and X- ray diffraction（XRD） was employed to analyze the strength and composition the bridge's materials.A finite element model was developed according to the form， structure and material properties to conduct a component importance analysis and load impact assessment.Finally，by integrating the results the field survey， finite element analysis， and a comparative evaluation the protective effects three water repellents on the stone materials Putang Bridge，adaptive conservation strategies were proposed. The research outcome can provide reference for the protection ancient brick and stone arch bridges.

Keywords： stone arch bridge;3D scanning;material characteristics;component importance; conservation technologies

1研究背景

蒲塘桥始建于明代（1386—1644年），2013年入选全国重点文物保护单位。（剩余10547字）