Testing Method And Platform For Remotely Collaborative Hybrid Dynamic Testing

In the field of Earthquake Engineering, structural experiments are still important means for understanding behaviors of structures and their components. As the scale and complexity of a modern structural experiment increase, existing structural laboratories, even those large-scale ones, are facing increasing difficulties to satisfy various types of demands of experiments with their limited resources. Therefore, it is academically significant and valuable for scientific application to establish an internet based network aiming at more efficient sharing of the resources and advance capability. Sponsored by the National Natural Science Foundation under the National Key Project"The modern method and system for remote pseudo dynamic testing of structures under earthquake simulation"(50338020), some studies on the method for remotely collaborative hybrid dynamic testing of substructures and structural elements have been carried out in this thesis. The main research achievements are summarized as followings:Based on the network communication platform NetSLab (Networked Structural laboratories) developed by the research group, the rational framework of a platform for remote pseudo dynamic testing applications of substructures and structural elements is proposed and a robust standardized platform entitled NetSLab-SDOF has been developed for remotely collaborative hybrid dynamic testing of single story structures with Visual Basic program language. It is composed of four modules, named as control center, physical tester, virtual tester, and remote observer. This platform not only allows different laboratories to jointly carry out a single structural experiment, but also allows remote users to visualize undergoing experiments synchronously and obtain testing results. Successful applications of several structural experiments, numerical simulation, and network testing have verified the validity and efficiency of this platform.Based on the conventional pseudo-dynamic testing concept, a method for remotely collaborative hybrid dynamic testing of substructures and structural elements using substructure technique is discussed and the equations of motion are derived. The control principle and numerically procedure are also described. The validation of the above method is verified by several cooperative hybrid dynamic testis of CFT column and bridge structure and virtual pseudo dynamic tests. Besides, the method and control principle for testing substructures in a single-story frame system under loading due to eccentric lateral responses of superstructure to earthquake motion is presented. Several validated simulation tests have been conducted successfully. Additionally, the method and control principle for testing substructures in a...