Novel loading method for segment assembly bridge girder erection machine load test

Abstract

The invention provides a novel loading method for a segment assembly bridge girder erection machine load test, and relates to the technical field of segment assembly bridge girder erection machine load test methods. The method comprises the following steps: step 1, uniformly suspending all segment blocks through a segment assembly bridge girder erection machine, reserving a lowering space for a lifting appliance of a hoisting crown block at a midspan position of a main frame of the segment assembly bridge girder erection machine, and placing a counterweight segment block on the ground below the lowering space; and 2, moving the lifting appliance to the position above the lowering space through the lifting crown block, lowering the lifting appliance to penetrate through the lowering space, lifting the counterweight segment block through the lifting appliance, and finishing loading of the segment assembly bridge girder erection machine main frame load test. By the adoption of the counterweight method, beam body damage caused by improper stowage of the segment blocks can be effectively eradicated, the risk that the counterweight slides down is prevented, when manpower and material resources are saved, unloading can be conducted in time if detection indexes are abnormal or unforeseen circumstances occur, and accidents caused by untimely unloading are avoided.

Description

Technical field [0001] The present invention relates to the technical field of bridging machine load test methods, and more particularly to the technical field involving the load test method of segment assembled bridge load test methods. Background technique [0002] After the segment assembled bridge is installed, you need to load the whole machine to verify the main frame strength, stiffness, and post-deformation, generally loaded weight is 1.1 times that of the suspension of the segment beam. Take a segment assembled bridge machine with a 50m cross, 15 segment blocks, and cross-range suspension weight of 1500T (typically 1400t-2000t inequality) as an example. In addition to hanging 15 segment beams, it is still necessary to load 1500T. * 0.1 = 150t with heavy blocks. [0003] The conventional loading method is as follows: The weight block generally uses a ton bag (ie, the sandbag) or the water bottle is placed on the segment block, and the weight block is 1T / , that is, 150 wi...

AI Technical Summary

Problems solved by technology

[0008] The present invention proposes a new loading method for the load test of segmental assembled bridge erecting machines, which solves the problem in the prior art that the weight blocks are loaded on the segmental blocks using ton bags or water bags

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