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Hollow slab beam hinge joint repair interval determining method and construction method thereof

A hollow slab girder and a technology to determine the method, applied in bridge maintenance, bridge, bridge reinforcement, etc., can solve the problems of hinge joint durability impact and unsatisfactory, reduce the risk of stress, reduce maintenance costs, and have excellent practical performance Effect

Active Publication Date: 2018-11-30
SHANGHAI ZHONGCEHANG TESTING & CONSULTING OF ENG CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the glue injection repair method fills the hinge joint cavity, the cost of epoxy glue and the total construction cost exceed 1 / 2, and the cracked bridge deck pavement longitudinal joint also has a certain impact on the durability of the hinge joint repaired by glue injection at the bottom of the beam. Insufficient, unable to meet the needs of rapid social development

Method used

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  • Hollow slab beam hinge joint repair interval determining method and construction method thereof
  • Hollow slab beam hinge joint repair interval determining method and construction method thereof
  • Hollow slab beam hinge joint repair interval determining method and construction method thereof

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Embodiment Construction

[0046] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0047] see figure 1 , figure 2 , image 3 , Figure 4 , a method for determining the repair interval of hinge joints in hollow slab beams. The hinged slab beam method is that only the shear force is transferred in the combined joints under the action of vertical loads, and the lateral distribution of mid-span loads follows the law of half-wave sine loads;

[0048] According to the mechanical characteristics of the hinged slab bridge, the shear force of the slab girder is the largest at the mid-span, and the closer to the fulcrum, the shear force tends to zero. The change of the shear force from the mid-span to the fulcrum conforms to the sinusoidal principle, and the calculated shear force satisfies the following conditions:

[0049] 1) The ...

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Abstract

The invention discloses a hollow slab beam hinge joint repair interval determining method and a construction method thereof. Design is novel, hinge joint repair range is determined effectively, durability of hinge joint structure is improved, maintenance cost is lowered, traffic interruption is not needed, and risk of hinge joint single-slab stress is lowered; the construction method combines hinge joint stress characteristics and adopts interval maintenance, so that epoxy glue utilization rate is high, maintenance cost is reduced, and reinforcing maintenance effect is ensured. Impact of bridge deck pavement and water seepage after secondary damage of a hinge joint on structural glue can be prevented, durability is improved, practicability is excellent, and the construction method is a great innovation scheme and has great market popularization prospect.

Description

technical field [0001] The invention relates to the technical field of bridge engineering, in particular to the determination of the hinge joint repair interval of hollow slab girders and the construction method for hinge joint repair thereof. Background technique [0002] In the superstructure of bridges currently in operation, concrete hollow slab girders are a relatively common structural form, and the parts connecting two slab girders are hinge joints. Due to the inherent defects in the design and construction process or the lack of support, under the natural environment and heavy traffic and vehicle load conditions, a large number of hollow slab girder bridges have defects, among which the damage of hinge joints is particularly prominent. Once the hinge joint is damaged, its ability to transmit shear force will be greatly reduced, and even the single plate will be stressed, which will change the force transmission system of the bridge structure and endanger the safety o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D22/00
CPCE01D22/00
Inventor 袁桂芳房驰罗杰楼王源仇建明
Owner SHANGHAI ZHONGCEHANG TESTING & CONSULTING OF ENG CO LTD
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