Some Experiences with Evaluation of the Load Carrying Capacity of Bridges Using in Situ Load Tests-Reference-Cited by-同舟云学术

Some Experiences with Evaluation of the Load Carrying Capacity of Bridges Using in Situ Load Tests

Published:2018 Issue: Volume: Page:
ISSN:2221-3783
Container-title:IABSE Conference, Copenhagen 2018: Engineering the Past, to Meet the Needs of the Future
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Author:

Schmidt Jacob Wittrup¹,Henriksen Arne²,Engelund Svend³

Affiliation:

1. The Technical University of Denmark, Lyngby

2. The Danish Road Directorate, Denmark

3. COWI A/S, Denmark

Abstract

The evaluation of the load carrying capacity of bridges is usually performed using a computational model and a number of codes that specify the relevant ma terial properties and loads. This approach ensures that the evaluation of the load carrying capacity is performed such that the bridge has an acceptable level of safety with respect to a number of adverse events such as collapse (ultimate limit state) and large deformations (serviceability limit state). However, experience indicate that redistribution of load effects, interaction between structural elements, the actual boundary conditions and other factors may provide a higher load carrying capacity than the one determined on the basis of the computational model. The Danish Road Directorate has in cooperation with The Danish Technical University and COWI A/S performed a number of in situ load tests of concrete bridges in order to determine the actual load carrying capacity of the short span concrete bridges (up to 12m). The paper presents the planning and the execution of the tests. Further, it is demonstrated how the results may be used in order to determine the actual load carrying capacity of a bridge.

Publisher

International Association for Bridge and Structural Engineering (IABSE)

Reference12 articles.

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4. ACI Committee 437. (2013). Code requirements for load testing of existing concrete structures (ACI 437.2 M‐13) and commentary (p. 24).Farmington Hills, MA: American Concrete Institute.

5. NRA. (2014). Load testing for bridge assessment. Dublin: National Roads Authority.