Box type bridge static loading test rack

Abstract

The invention discloses a box type bridge static loading test rack. The box type bridge static loading test rack comprises two box type lower transverse beams and two box type main beams; connecting end racks are arranged at the two ends of the two box type main beams; the connecting end racks are connected with the main beams through bolts; main beam pull rod fixing bases are arranged at the two ends of the main beams; lower transverse bean pull rod fixing bases are arranged at the two ends of the lower transverse beams; a double-ended thread pull rod penetrates through between the main beam pull rod fixing bases and the lower transverse bean pull rod fixing bases; the maximum distance between the main beams and the lower transverse beams is limited through nuts at the two ends of the double-ended thread pull rod; five loading beams which are vertical to the directions of the main beams are further arranged on the lower end faces of the main beams; and the length of the loading beams is not less than the distance between the outer box plates of the two main beams. The box type bridge static loading test rack has the advantages of simple structure, light self weight, small steel material consumption amount and low manufacturing cost on the premise of meeting test requirements.

Description

technical field [0001] The invention relates to bridge detection equipment, in particular to a static load test frame for concrete prefabricated box bridges. Background technique [0002] Box-shaped prefabricated bridges used for high-speed railways must undergo static load tests to check their manufacturing quality and performance parameters. According to the requirements of static load test specifications, a 32-meter-long box-shaped girder needs two rows of loads, each with 5 loading points. There are a total of 10 loading points in the row, and the maximum loading force of each loading point is 140 tons, so the static load of the entire box girder is 1400 tons. This static load test needs to be completed on a special test frame. CN201122142Y discloses a prestressed concrete pretensioned box girder static load test pedestal, which can meet the static load test requirements of box-type prefabricated bridges, but the device needs to set a huge reinforced concrete foundation ...

AI Technical Summary

Problems solved by technology

CN201122142Y discloses a prestressed concrete pretensioned box girder static load test pedestal, which can meet the static load test requirements of box-type prefabricated bridges, but the device needs to set a huge reinforced concrete foundation beam underground, so when a After the construction of the beam factory, the foundation beams built were also abandoned, which not only wasted resources, but also damaged the ecological environment

CN201110804Y discloses a multifunctional test frame, which is mainly composed of main beam, upper beam, lower beam, tie beam, pad beam, tie rod, support and oil top, and the test frame can be moved and repeated between beam factories However, this kind of test frame has a large self-weight and consumes more steel, which brings a lot of inconvenience to on-site lifting and assembly.

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