The maintenance method suitable for the winter construction of hanging basket and cast box girder in strong wind area

A box girder and regional technology, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of unfavorable overall linear control of box girder, increased construction load, poor thermal insulation and maintenance effect, etc. The effect of the influence of wind loads

Active Publication Date: 2020-03-31
CHINA COMM 2ND NAVIGATIONAL BUREAU 2ND ENG
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In strong wind areas, the hanging basket and hanging box girders are poured in winter. The traditional method is to use the curing shed to seal and then steam curing. This method has poor thermal insulation and maintenance effects, and poor wind resistance performance. Especially in strong wind areas, there is a risk of overturning, resulting in major safety accidents; at the same time The construction load is increased, which is not conducive to the overall linear control of the box girder, and may exceed the design allowable load

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  • The maintenance method suitable for the winter construction of hanging basket and cast box girder in strong wind area
  • The maintenance method suitable for the winter construction of hanging basket and cast box girder in strong wind area
  • The maintenance method suitable for the winter construction of hanging basket and cast box girder in strong wind area

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Embodiment Construction

[0033] The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it with reference to the text of the description.

[0034] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified. The reagents and materials, unless otherwise specified, can be obtained from commercial sources; in the description of the present invention, The terms "horizontal", "vertical", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", The orientation or positional relationship indicated by "inner" and "outer" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have The specific orientatio...

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Abstract

The invention discloses a maintenance method suitable for cantilever cast-in-place box girder construction in strong wind area in winter. The outside edge of the box girder is provided with a formwork; the method comprises the following steps: 1, sealing front and back ends of a sealing room of a box girder in the longitudal direction of the bridge; 2, injecting hot steam into that enclosed box; 3, that surface of the formwork is paved with heat preservation material, and a heat preservation layer is pave on the top surface of the box girder. The invention has the advantages of good heat preservation, moisture preservation and curing effect, strong wind resistance, and more practicability for strong wind areas.

Description

Technical field [0001] The invention relates to the field of box girder maintenance. More specifically, the present invention relates to a maintenance method suitable for winter construction of a hanging basket suspension cast box girder in a strong wind area. Background technique [0002] In the strong wind area, the hanging basket suspension box girder is poured in winter. The traditional method is steam curing after the curing shed is sealed. This method has poor thermal insulation and maintenance effect and poor wind resistance, especially in strong wind areas, which may cause overturning risks and cause major safety accidents; at the same time; Increased construction load is not conducive to the overall linear control of the box girder, and may exceed the design allowable load. Summary of the invention [0003] The invention provides a maintenance method suitable for winter construction of a hanging basket suspended cast box girder in a strong wind area, which has good therm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 周和清枚龙王坤向钱均谭吉豪
Owner CHINA COMM 2ND NAVIGATIONAL BUREAU 2ND ENG
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