An innovative direct analysis method based approach for the stability control of indirectly supported structures

摘要

This paper adopts the idea of structural control therefore; a controllable support system has been designed, fabricated, and installed in a dedicated test structure for stability and structural response control under symmetric loads. Firstly, a brief computational technique based on Direct Analysis Method is presented, highlighting stability control of additionally supported structure. Then, the paper gathers analytical data that includes numerical values, obtained from ANSYS finite element analysis. Subsequently, the paper presents the validation of the proposed technique by experimental investigation of three dimensional model of the under-slung beam, arranged of the main element reflecting behaviour of beam-column and controlling supporting system by means of stays and controllable length of the strut. Detailed design and analysis of the controllable system are carried out with the respect to control stability and obtain rational extreme bending moments distribution. Finally, paper closes with the assessment of the stability and structural control yielded by the proposed computational technique and structural solution, through their comparison with the obtained experimental results and analytical data - it is shown that both the quality and reliability of the proposal are good.