CAJ | 학술논문

在总结各种常规桥梁结构位移量测方法及其局限性的基础上，较为详细地介绍了PSD非接触式光学位移量测技术。它可以实时地量测桥梁结构的动态位移，获得最大挠度、各种振动特性、基频和衰减系数等重要参数。PSD测试系统由一台高速摄像仪和若干个带有LED发光元件的标靶组成。标靶安装在桥梁结构上，高速摄像仪在一定距离范围内实时捕捉标靶位移的变化。实际工程应用表明，PSD非接触式光学量测技术可有效地应用于桥梁结构的位移量测中。
재총결각충상규교량결구위이량측방법급기국한성적기출상，교위상세지개소료PSD비접촉식광학위이량측기술。타가이실시지량측교량결구적동태위이，획득최대뇨도、각충진동특성、기빈화쇠감계수등중요삼수。PSD측시계통유일태고속섭상의화약간개대유LED발광원건적표파조성。표파안장재교량결구상，고속섭상의재일정거리범위내실시포착표파위이적변화。실제공정응용표명，PSD비접촉식광학량측기술가유효지응용우교량결구적위이량측중。
Based on the summarization of many kinds of conventional bridge structure displacement measurement methods and their limitations,a new technology PSD (Position Sensitive Detector) with non-contact optical measurement system was introduced detailedly in this paper. The dynamic displacement of bridge structure can be measured in real time,and some valuable parameters can also be obtained,such as maximum deflections,vibration characteristics,fundamental frequencies and attenuation coefficients. PSD system is composed of a V-Cam and PSD targets with LED component. PSD targets can be mounted onto the specific test point of bridge structure. The displacement of target can be captured by V-Cam located within an allowable distance. The practical engineering application showed that PSD non-contact optical measurement system could be effectively used in bridge structure displacement measurement.