Identification of Elastic Modulus and Effective Pre-Stress Based on Inversion Theory

Zhao Ning Zhang

doi:10.4028/www.scientific.net/AMM.501-504.1328

Paper Titles

Influence Analysis of Train Speed on Vibration Responses of Footbridge
p.1310

Analysis on Security Appraisa of the Existing Reinforced Concrete Bridges
p.1314

Reasonable Elevation Calculation of Temporary Pier of Long-Span Steel Trussed Arch Bridges with Semi-Cantilever
p.1318

Procedure Inversion Effect Analysis of Final System Transformation of Prestressed Concrete Continuous Girder Bridge
p.1323

Identification of Elastic Modulus and Effective Pre-Stress Based on Inversion Theory
p.1328

Stone Arch Bridge Disease Detection and Evaluation
p.1332

Optimization of Prestress Reinforcement Design in Large-Span Prestressed Concrete Continuous Rigid Frame Bridges
p.1339

Effectiveness Evaluation on Prestressed Continuous Box Girder Bridge Strengthening with Prestressing
p.1343

Numerical Analysis on Dynamic Responses of the Reinforced Concrete Piers under Impact Loads of Mass Objects
p.1348

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 501-504Identification of Elastic Modulus and Effective...

Identification of Elastic Modulus and Effective Pre-Stress Based on Inversion Theory

Abstract:

Due to vehicle load, shrinkage, creep, temperature and other factors, the strength and stiffness degenerate increasingly for the pre-stressed concrete continuous beam bridge in service. The problem, such as cracking, excessive deflection in the mid-span caused by the deterioration of the elastic modulus and pre-stress, has a direct impact on the usability, durability and security. To solve the problem mentioned above, according to the monitored deflection of the bridge in service at different time, the elastic modulus and the effective pre-stress are evaluated by establishing the inversion analysis model based on the inversion theory.