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A platform for research: civil engineering, architecture and urbanism
Evaluation of a concrete continuous beam bridge using load test
This paper presents the details of a static and dynamic load test on a long-span prestressed concrete continuous beam bridge. Based on the results of the field load test, the following conclusions can be drawn. According to the results of the static test of the bridge, the measured data show that the intensity of the bridge satisfies the requirement of design. The values of redundant strain represent less than 10 % of the measured strain. It shows that bridge deformation is in the elastic scope. The largest measured deflection of the bridge was only 15 mm, which is 1/6667 of the single span length and less than the prescribed deflection in norms. It indicates that the vertical rigidity agrees with the design requirement. Comparing Table 4 with Table 5, we can learn that actual measured inherent frequency of the first several orders of the bridge is bigger than the corresponding computed values. It shows that actual flexural stiffness is bigger than the computed stiffness and the bridge stiffness satisfies the design requirement. The dynamic and static load tests on this long-span prestressed concrete continuous beam bridge show that the stiffness, the intensity and the dynamic properties of the tested bridge are all in good agreement with the requirement of the design, and the bridge is in excellent condition.
Evaluation of a concrete continuous beam bridge using load test
This paper presents the details of a static and dynamic load test on a long-span prestressed concrete continuous beam bridge. Based on the results of the field load test, the following conclusions can be drawn. According to the results of the static test of the bridge, the measured data show that the intensity of the bridge satisfies the requirement of design. The values of redundant strain represent less than 10 % of the measured strain. It shows that bridge deformation is in the elastic scope. The largest measured deflection of the bridge was only 15 mm, which is 1/6667 of the single span length and less than the prescribed deflection in norms. It indicates that the vertical rigidity agrees with the design requirement. Comparing Table 4 with Table 5, we can learn that actual measured inherent frequency of the first several orders of the bridge is bigger than the corresponding computed values. It shows that actual flexural stiffness is bigger than the computed stiffness and the bridge stiffness satisfies the design requirement. The dynamic and static load tests on this long-span prestressed concrete continuous beam bridge show that the stiffness, the intensity and the dynamic properties of the tested bridge are all in good agreement with the requirement of the design, and the bridge is in excellent condition.
Evaluation of a concrete continuous beam bridge using load test
Beurteilung einer Betonträgerbrücke mittels Belastungstest
2007
8 Seiten, 13 Bilder, 5 Tabellen, 5 Quellen
Conference paper
Storage medium
English
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