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

A short-line matching and prefabricated platform technology, which is applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve problems such as the inability to accurately and reliably detect and check the maximum uniform settlement difference

Active Publication Date: 2020-10-23
CCCC SHEC FOURTH ENG +1
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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 sol

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

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Embodiment Construction

[0034] The specific embodiments of the present invention will be further described in detail by describing the embodiments below with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0035] like Figure 1-3 As shown, the prefabricated pedestal 1 used for carrying box girders in the background technology has a pair of longitudinal track beams 5 symmetrical to the center line of the prefabricated pedestal in the middle of the bottom for support and guidance, and improves the prefabricated pedestal 1. part of the structural strength. The prefabricated pedestal 1 is sequentially provided with area 1 2 , area 2 3 and area 3 4 for carrying equal strength beams, matching beams and beams to be poured respectively from front to back. The maximum load analysis of each area is as follows:

[0036] The maximum load in area ...

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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...

Claims

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 谢德宽王文洋章文彬杨康
Owner CCCC SHEC FOURTH ENG
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