THEORY and MODEL EXPERIMENT of SMART PRESTRESSED BEAM

  • Xu Weiwei Southeast University, Nanjing 210096, China
  • Lü Zhitao Southeast University, Nanjing 210096, China
  • Ding Hanshan Southeast University, Nanjing 210096, China
  • Liu Zhao Southeast University, Nanjing 210096, China
  • Cao Sanpeng Southeast University, Nanjing 210096, China

Abstract

Based on the high ratio of live load to dead load, this paper presents using smart prestressing in the beam, which can change the value of prestressing under different live load. According to the live load on the beam, the deformation and strain of smart prestressed beam can be controlled in the design range if the beam is collocated with suitable telescopic mechanisms, which can change the value of prestressing in the smart beam by means of propping up or drawing back telescopic mechanisms. The deformation of a steel beam model, which uses analog signals control system and regards mid-span deformation as its control aim, is analyzed to show the whole function course of prestressing in the beam under three typical locomotive loads. The result of experiment validated the feasibility of smart prestressing control theory.

Published
2011-08-01
How to Cite
WEIWEI, Xu et al. THEORY and MODEL EXPERIMENT of SMART PRESTRESSED BEAM. EACEF - International Conference of Civil Engineering, [S.l.], v. 1, p. 043, aug. 2011. Available at: <http://proceeding.eacef.com/ojs/index.php/EACEF/article/view/132>. Date accessed: 12 aug. 2020.