프리플렉션 방식을 이용한 가설교량 정적 거동 연구

초록

Purpose: This study verified that the static behavior of a preflex type temporary bridge using the results of a numerical analysis method and load test of a full-scale specimen. Method: Based on the preliminary design by exact solution and numerical analysis method, preflex type specimen 1 and reinforced cross-section specimen 2 were manufactured and loading tests were performed. Result: The deflections of prestressing girders confirmed its integrity with a behavior of 97.7 to 100.0% compared to the theoretical deflection, the deflections of the 4 point loading test was 105 to 106.0% of the deflection of the exact solution and specimen 1 was found to have 6.0 to 34.5% more capacity of nominal stress than specimen 2. Conclusion: Compared to reinforced cross-section girder bridges, preflex type temporary bridges have a capacity of nominal stress. Therefore, preflex type temporary bridges have been proven to enhance engineering design efficiency.

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