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Method for imbalance load monitoring and integral stability judgment 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: 2017-05-31
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

Method used

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  • Method for imbalance load monitoring and integral stability judgment in bridge cantilever construction
  • Method for imbalance load monitoring and integral stability judgment in bridge cantilever construction
  • Method for imbalance load monitoring and integral stability judgment 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 belongs to the technical field of bridge construction and provides a method for imbalance load monitoring and integral stability judgment in bridge cantilever construction. The method includes: mounting strain meters and temperature sensors on piers of continuous rigid frame bridges or temporary solidification columns; adopting a least square method for obtaining a strain and temperature statistical relation according to temperature and strain measurement results obtained under the condition that the bridges are free of construction loads; subjecting strain measured at a construction stage to temperature influence correction to obtain load strain, and obtaining load imbalance offset in a cantilever construction process on the basis of the load strain; judging integral stability of the bridges according to the load imbalance offset. The problem of imbalance load quantification in a bridge cantilever construction process is solved, and safety in bridge cantilever construction is improved.

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...

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Application Information

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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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