数字散斑相关方法的建筑力学分析应用研究进展

 数字散斑相关方法，作为固体材料表面变形测量方法，是一种全场、无接触、高自动化和高精度的光学变形测量方法，与其他变形测量方法相比，具有灵敏度高，测量准确等一系列独特的优越性,在建筑工程变形测量及力学分析中得到较快的发展。本文阐述了数字散斑方法的基本原理，重点综述了数字散斑方法在混凝土、沥青材料、硅酸盐水泥、复合材料、负泊松比防爆材料等建筑材料以及混凝土结构、桥梁结构、岩土结构、木质结构等建筑结构力学行为测量与分析中的应用进展，总结并展望了数字散斑方法在未来建筑材料与结构在服役过程中有效监测的应用前景与发展趋势。随着数字散斑相关方法的测量精度与速度大幅提升，结合光纤技术与计算机模拟等方法，建筑材料与结构三维实体的微观力学行为有望实现全方位实时监测。

Application research progress of digital speckle correlation method in architectural mechanics analysis: A review

Digital speckle correlation method is a kind of integral, non-contacting, high-automation and high-precision optical deformation measurement method, which has its unique superior performance such as high sensitivity, easily identifying cracks and estimate accuracy, compared with other deformation measuring techniques. As a kind of deformation measurement method for solid material surface, it gets fast application in the deformation measurement for construction projects. In this paper, the basic principle of digital speckle correlation method is elaborated, and the application progress of digital speckle correlation method in mechanical behaviors measurement and analysis of building materials are summarized, including the concrete, asphalt material, Portland cement, composite materials, explosion-proof materials with negative Poisson's ratio, and architectural structures such as concrete structure, bridge structure, geotechnical structure and wooden structure The application prospect and development trend of digital speckle correlation method for building materials and architectural structures in service are generalized and predicted as well. With significant boost of the measuring accuracy and speed of digital speckle correlation method, it is envisioned that combined with the methods of optical fiber technology and computer simulation, micromechanics behaviors of three-dimensional solid of building materials and architectural structures can achieve dynamic real-time monitoring.