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Unbalanced load monitoring and overall stability judgment method in bridge cantilever construction

A technology for balancing loads and construction, which is applied in the field of unbalanced load monitoring and overall stability judgment in bridge cantilever method construction. Experiment with the effect of simple installation

Active Publication Date: 2018-10-26
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0005] The present invention provides a method for unbalanced load monitoring and overall stability judgment in bridge cantilever construction in order to solve the above-mentioned deficiencies of unbalanced load calculation and stability quantitative judgment in the construction process of the cantilever method

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  • Unbalanced load monitoring and overall stability judgment method in bridge cantilever construction
  • Unbalanced load monitoring and overall stability judgment method in bridge cantilever construction
  • Unbalanced load monitoring and overall stability judgment method in bridge cantilever construction

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Embodiment Construction

[0027] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0028] The invention provides a method for unbalanced load monitoring and overall stability judgment in bridge cantilever method construction.

[0029] Such as figure 1 As shown, in this method, the strain gauge 6 on the left temporary consolidation column and the strain gauge on the right temporary consolidation column are installed at the symmetrical positions on the same height of the left temporary consolidation column 4 and the right temporary consolidation column 5 8. Measure the axial strain of the temporary consolidation column; install the temperature sensor 7 on the left temporary consolidation column and the right Temperature sensor 9 on the temporary consolidation column; when the foundation of the constructed arm beam 3 is completed, contin...

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Abstract

The invention provides a method for unbalanced load monitoring and overall stability judgment in bridge cantilever method construction, belonging to the technical field of bridge construction. This method installs strain gauges and temperature sensors on temporary consolidation columns or piers of continuous rigid frame bridges, and uses the least square method to obtain the statistical relationship between strain and temperature according to the measurement results of temperature and strain under the condition of no construction load on the bridge. Then, the temperature influence correction is carried out on the strain measured in the construction stage to obtain the load strain, and on this basis, the load imbalance deviation during the construction process of the cantilever method is obtained. Judging the overall stability of the bridge based on the load imbalance deviation. The invention solves the problem of unbalanced load quantification in the cantilever method bridge construction process, and improves the safety of the bridge cantilever method construction.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a method for unbalanced load monitoring and overall stability judgment in bridge cantilever method construction. Background technique [0002] The cantilever construction method is an important construction method in the construction of prestressed concrete continuous girder bridges in modern bridges. Due to the particularity of cantilever construction, during the entire construction process of segmental cast-in-place, the load balance of the two cantilever ends is the key to site construction control. Symmetrical and balanced pouring is to reduce the moment, however, during the construction process, it is impossible to achieve absolute balance. "Technical Specifications for Construction of Highway Bridges and Culverts" (JTG / T F50-2011) Article 16.5.4, paragraph 1, page 141, states that cantilever pouring construction should be carried out symmetrically and balancedl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/10G01B5/30G01K1/02
CPCG01B5/30G01K1/02E01D21/105
Inventor 潘旦光程业付相球
Owner UNIV OF SCI & TECH BEIJING
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