Measuring and checking method based on segmental box girder stub matching prefabricated pedestal foundation

Abstract

The invention discloses a measuring and checking method based on a segmental box girder stub matching prefabricated pedestal foundation. The method comprises the steps of 1, burying measuring points in a prefabricated pedestal, 2, setting an electronic level, 3, carrying out a first loading test, and carrying out an overall uniform loading test on each region on each prefabricated pedestal to eliminate non-elastic deformation, 4, carrying out a second loading test, carrying out full loading on the region I and the region II, respectively loading the region III according to the two conditions of the total weight of the template and the full loading weight after pouring, and simulating the load condition of a prefabricated construction process to measure the settlement amount before and after pouring of the to-be-poured beam, and 5, calculating the maximum differential settlement difference of the prefabricated pedestal through data analysis, and judging whether the maximum differentialsettlement difference meets the construction requirement or not. According to the method, the maximum differential settlement difference is difficult to detect and check, the reliability is insufficient, and the interference of non-elasticity on a measurement result can be avoided.

Description

technical field [0001] The invention relates to a method for measuring and checking a prefabricated pedestal foundation based on segmental box girder short lines matching. Background technique [0002] In recent years, in the field of bridges, segmental box girders have begun to be prefabricated using the short-line matching method in a factory-like assembly line. The beam body is carried by the prefabricated pedestal and flows on the line. On some assembly lines, in order to save time, when matching, the box girder with the best strength will not be used as the matching beam, but the box girder with a certain strength will be used as the matching beam. In the area of ​​the rear box girder, the box girder is placed in this area for a period of time, so that its strength can be further improved through maintenance, and it has reached the strength requirement that it can be hoisted away from the prefabricated pedestal. This box girder is called an equal strength beam in this p...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for measuring and checking the prefabricated pedestal foundation based on the segmental box girder short line matching, so as to solve the problem that the existing technology cannot accurately and reliably detect and check the maximum uniform settlement difference of the prefabricated pedestal foundation on the water bearing line

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