<p>The first timber bridge for vehicles in Korea, a single-span, arched truss bridge 30m in length, was constructed in 2012. The bridge was designed and constructed as a part of national research projects for the development large timber structures funded by the Korea Forest Research Institute. This paper introduces the development process of the timber structures in Korea as well as design, construction of the first vehicular timber bridge. In-situ truck load tests are performed along with multiple-year monitoring project for performance assessment. Both loading tests and long-term monitoring data show that the construction of the bridge agrees with initial baseline model and it still holds a sold soundness until 6 years after its birth.</p>
As the application of electric resistance welded (ERW) pipes in deep-water increases, accurate structural performance assessment satisfying the limit state, which is collapse performance, is necessary. Advantages of ERW pipes are effective productivity coming from continuous manufacturing process, but it is hard to track change in mechanical properties during manufacturing. In this study, the ERW pipe manufacturing process was simulated as a three-dimensional finite element method, and the collapse analysis was performed by reflecting the results of the ERW pipe manufacturing process. The results showed that adjustment of ERW pipe manufacturing process had a significant effect on enhancement of collapse performance.
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