Strain measurement of a space structure bridge
-
Published:2005
A. Calderon, 2005. "Strain measurement of a space structure bridge", Bridge Management 5: Inspection, maintenance, assessment and repair: Proceedings of the 5th International Conference on Bridge Management, organized by the University of Surrey, 11–13 April 2005, G.A.R. Parke, P. Disney
Download citation file:
Two 65 metre span space structure bridges were built in 1990. The design load for the structures was in accordance with the then current standard was the HS-20. However; at present the design loads required in accordance to current standards are the T3-S3 and the T3-S2-R4. The difference between the HS-20 and these loads is about 16 and 40 metric tons respectively. With the increased loads it was obvious that the bridge would require reinforcing. In order to obtain suitable reinforcement a new mathematical models of the bridges were needed. However, this new model would assume by nature that elements were working as if they were new elements. In order to take into account the age of the structural members, strain measurements were carried out to determine how the bridges were behaving under new loads and how the structures were deteriorating with timer The aim of this paper is to show the results of the strain measurement under both static and dynamic loads.
Introduction
Instrumentation
Load Tests
Static Load Test
Dynamic Load Test
Mathematical Model
