CN108978472B - Maintenance method suitable for winter construction of hanging basket suspension casting box girder in strong wind area - Google Patents
Maintenance method suitable for winter construction of hanging basket suspension casting box girder in strong wind area Download PDFInfo
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- CN108978472B CN108978472B CN201810732392.9A CN201810732392A CN108978472B CN 108978472 B CN108978472 B CN 108978472B CN 201810732392 A CN201810732392 A CN 201810732392A CN 108978472 B CN108978472 B CN 108978472B
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- box girder
- vertical rod
- strong wind
- rubber bag
- hanging basket
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention discloses a maintenance method suitable for winter construction of a hanging basket suspension casting box girder in a strong wind area, wherein a template is arranged on the outer side edge of the box girder, and the method comprises the following steps: firstly, sealing the front end and the rear end of a closed box chamber of a box girder along the longitudinal direction of a bridge; step two, filling hot steam into the closed box chamber; and thirdly, paving a heat insulation material on the surface of the template, and paving a heat insulation layer on the top surface of the box girder. The invention has good heat preservation and moisture preservation maintenance effects, strong wind resistance and practicability for strong wind areas.
Description
Technical Field
The invention relates to the field of box girder maintenance. More particularly, the invention relates to a maintenance method suitable for winter construction of a hanging basket suspension casting box girder in a strong wind area.
Background
In the strong wind area, the hanging basket suspension box girder is cast for winter construction, the traditional method is to use steam curing after the sealing of a curing shed, the method has poor heat preservation and curing effects and poor wind resistance, and the serious safety accident is caused by the overturning risk in the strong wind area; meanwhile, construction load is increased, integral linear control of the box girder is not facilitated, and the design allowable load can be exceeded.
Disclosure of Invention
The invention provides a maintenance method suitable for winter construction of a hanging basket suspension casting box girder in a strong wind area, which has good heat preservation and maintenance effects, strong wind resistance and higher practicability.
In order to achieve the purpose, the invention provides a maintenance method suitable for winter construction of a hanging basket suspension casting box girder in a strong wind area, wherein a template is installed on the outer side edge of the box girder, and the maintenance method for the winter construction of the hanging basket suspension casting box girder comprises the following steps:
step one, sealing the front end and the rear end of a box girder;
step two, filling hot steam into the closed box chamber;
and thirdly, paving a heat insulation material on the surface of the template, and paving a heat insulation layer on the top surface of the box girder.
Preferably, the maintenance method is suitable for winter construction of the hanging basket suspension casting box girder in the strong wind area, and a plurality of through holes are formed in the top surface of the box girder along two side edges of the bridge in the longitudinal direction.
Preferably, the maintenance method suitable for winter construction of the hanging basket suspension casting box girder in the strong wind area is characterized in that the heat insulation layer is distributed along the longitudinal direction of the bridge and comprises the following steps:
the frame body is of a cuboid structure erected on the top surface of the box girder through a plurality of movable clamping devices, two side surfaces of the frame body along the transverse direction of the bridge are respectively and correspondingly sunken to form two pairs of sliding chutes, and the two pairs of sliding chutes are respectively arranged in a staggered manner along the vertical direction;
the two side plates are respectively arranged in the two pairs of sliding grooves in a sliding manner; one end of the side plate, which is far away from the frame body, is vertically and downwards connected with a telescopic rod, and the lower end of the side plate is detachably connected with a clamping structure;
the bottom of the frame body and the bottom of the side plate are both adhered with a rubber bag, and a layer of linen is adhered to the outer part of the rubber bag; a plurality of rubber blocks are bonded in the rubber bag along the height direction of the rubber bag, and two ends of each rubber block are respectively fixed on the upper surface and the lower surface of the rubber bag; the plurality of rubber blocks divide the inner space of the rubber bag into a plurality of relatively independent subspaces; and each rubber block is provided with a through hole so as to communicate the two adjacent subspaces; the rubber bag is provided with an inflation inlet for external inflation; and each subspace in the rubber bag is filled with phase change material particles, wherein the filling amount of the phase change material particles is 1/20 of the volume of the subspace after being inflated.
Preferably, the maintenance method suitable for winter construction of the hanging basket suspension casting box girder in the strong wind area comprises the following steps:
the T-shaped plate body is inversely and vertically welded at the bottom of the frame body;
the T-shaped plate body is clamped in the clamping groove and can move and not fall off; elastic rubber particles are filled in the T-shaped groove in the clamping groove except for the T-shaped plate body.
Preferably, the maintenance method suitable for winter construction of the hanging basket suspension casting box girder in the strong wind area comprises the following steps:
the vertical rod is coaxially connected to the lower end of the telescopic rod;
the inclined plates are uniformly distributed around the lower end of the vertical rod in an annular manner; the inclined plate is obliquely arranged, the lower end of the inclined plate is fixed on the vertical rod, and the upper end of the inclined plate is separated from the vertical rod by a certain distance; a plurality of torsion springs are clamped in an accommodating space formed between the inclined plate and the vertical rod; the included angle of the torsion spring is just clamped in the included angle between the lower end of the inclined plate and the vertical rod, and two sides of the torsion spring are respectively fixed on the inclined plate and the vertical rod; the top ends of the inclined plates are fixed by an annular elastic component to form an annular spring; the swash plate outside sets up a dismantlement board along its length direction slidable, wherein, the swash plate with the one side of dismantling the board contact is inwards sunken along its length direction respectively and is formed a shape of falling protruding recess, outside protrusion and form a shape of protruding font draw runner, the slip card that the shape of protruding font draw runner does not fall is established in the shape of protruding font recess.
Preferably, the maintenance method is suitable for winter construction of the hanging basket cantilever casting box girder in the strong wind area, the rubber bags corresponding to the side plates protrude downwards along the longitudinal direction of the bridge and on one side close to the outer side of the bridge to form a strip-shaped bulge, the bulge is communicated with the inside of the rubber bags, and when the rubber bags are filled with gas, the bulge is filled to play a role in enclosure.
Preferably, the maintenance method is suitable for winter construction of the hanging basket suspension casting box girder in the strong wind area,
vertical pole, coaxial coupling in the telescopic link lower extreme specifically is:
the outer part of the telescopic rod is provided with an external thread;
the vertical rod is hollow, internal threads are arranged in the vertical rod, and the vertical rod are in threaded connection.
The invention at least comprises the following beneficial effects:
(1) the invention adopts the technology that the template at the outer side of the box girder and the top surface are provided with the heat-insulating layer, and the inside of the box girder is sealed by steam for curing, thereby solving the problem of curing construction of the hanging basket suspension casting box girder in winter.
(2) The invention avoids the risk of overturning due to the increase of load of the maintenance shed.
(3) The invention reduces the influence of wind load and is more beneficial to the integral linear control of the box girder.
(4) The invention has higher practicability for concrete maintenance in the areas with strong wind and non-severe cold in winter.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of the overall structure of the insulation of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
fig. 3 is a schematic structural view of the fastening structure of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials, if not otherwise specified, are commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
The invention provides a maintenance method suitable for winter construction of a hanging basket suspension casting box girder in a strong wind area, wherein a template is arranged on the outer side edge of the box girder, and the maintenance method comprises the following steps: firstly, sealing the front end and the rear end of a closed box chamber of a box girder along the longitudinal direction of a bridge, wherein the front end and the rear end can be sealed by plastic films; step two, filling hot steam into the closed box chamber, wherein the secondary hot steam comes from a hot boiler or other external hot steam sources; thirdly, paving a heat insulation material on the surface of the template, and paving a heat insulation layer on the top surface of the box girder; thus, the heat insulation effect is good.
In another embodiment, the insulating layer is distributed along a longitudinal direction of the bridge, and the insulating layer includes: the frame body 1 is a cuboid structure erected on the top surface of the box girder 2 through a plurality of movable clamping devices 7, two side surfaces of the frame body 1 along the transverse direction of the bridge are correspondingly sunken in to form two pairs of sliding chutes respectively, and the two pairs of sliding chutes are staggered along the vertical direction respectively; the two side plates are respectively arranged in the two pairs of sliding grooves in a sliding manner; one end of the side plate, which is far away from the frame body 1, is vertically and downwards connected with a telescopic rod 3, and the lower end of the side plate is detachably connected with a clamping structure 4; the bottom of the frame body 1 and the bottom of the side plate are both adhered with a rubber bag 5, and a layer of linen is adhered to the outer part of the rubber bag; a plurality of rubber blocks 6 are bonded in the rubber bag 5 along the height direction of the rubber bag, and two ends of each rubber block 6 are respectively fixed on the upper surface and the lower surface of the rubber bag 5; the plurality of rubber blocks 6 divide the inner space of the rubber bag 5 into a plurality of relatively independent subspaces; and each rubber block 6 is provided with a through hole so as to communicate two adjacent subspaces; the rubber bag 5 is provided with an inflation inlet for external inflation. This heat preservation can be adjusted along with the width of case roof beam, when the case roof beam broad, outwards pulls out two curb plates along the spout, then utilizes the regulation telescopic link, makes its height suitable to utilize the solid structure 4 of card to be fixed in on the case roof beam 2. And the rubber bag 5 has been set up here to filled the phase change material granule in it, good in outside sunshine, under the good condition of weather, can absorb energy storage energy, wait when evening the temperature reduction, released the heat again, just so can guarantee constant temperature as far as possible, the influence that the temperature caused to the construction is reduced as far as possible.
In another embodiment, as shown in fig. 2, the maintenance method suitable for winter construction of the hanging basket cantilever casting box girder in the strong wind area includes that the movable clamping device 7 includes: the T-shaped plate body 710 is inversely and vertically welded at the bottom of the frame body 1; the clamping groove 720 is fixed on the top surface of the box girder 2, and a T-shaped groove is formed in the clamping groove to accommodate the T-shaped plate body 710, so that the T-shaped plate body 710 can be clamped in the clamping groove 720 movably without falling; elastic rubber particles are filled in the T-shaped groove in the clamping groove 720 except for the T-shaped plate 710. Set up T type plate body 710 and card groove 720 to relative activity setting like this to elastic rubber granule is filled to the activity space of the two, when wind is big, can play fine cushioning effect, can absorb earlier and offset some energy, and the direct unstability that rocks of whole heat preservation of minimize wind-force.
In another embodiment, as shown in fig. 3, the maintaining method suitable for winter construction of the suspended-basket suspended-casting box girder in the strong wind area includes: a vertical rod 410 coaxially connected to the lower end of the telescopic rod 3; a plurality of inclined plates 420 uniformly distributed around the lower end of the vertical rod 410 in a ring shape; the inclined plate 420 is obliquely arranged, the lower end of the inclined plate is fixed on the vertical rod 410, and the upper end of the inclined plate is separated from the vertical rod 410 by a certain distance; a plurality of torsion springs 430 are clamped in the accommodating space formed between the inclined plate 420 and the vertical rod 410; the included angle of the torsion spring 430 is just clamped in the included angle between the lower end of the inclined plate and the vertical rod, and two sides of the torsion spring are respectively fixed on the inclined plate and the vertical rod; the top ends of the inclined plates 420 are fixed by an annular elastic component to form an annular spring; a disassembly plate 440 is slidably arranged on the outer side of the inclined plate along the length direction of the inclined plate, wherein one surface of the inclined plate, which is contacted with the disassembly plate, is inwards recessed along the length direction of the inclined plate to form an inverted convex groove, and outwards protruded to form a convex slide bar, and the convex slide bar is slidably clamped in the convex groove without falling off; a plurality of through holes are formed in the top surface of the box girder along two side edges of the longitudinal direction of the bridge; therefore, the clamping structure 4 can be effectively clamped and fixed at two sides of the box girder along the longitudinal direction of the bridge; and this card solid construction 4 can adapt to the perforating hole of multiple size, wherein, vertical pole, coaxial coupling in the telescopic link lower extreme specifically is: the outer part of the telescopic rod is provided with an external thread; the diameter of the through hole is slightly larger than the diameter of the vertical rod 410, the vertical rod is hollow, internal threads are arranged in the vertical rod, and the vertical rod are in threaded connection, so that detachable connection can be easily realized.
In another embodiment, in the maintenance method for winter construction of the hanging basket cantilever casting box girder in the strong wind area, the rubber bags corresponding to the side plates protrude downwards along the longitudinal direction of the bridge and on one side close to the outer side of the bridge to form a strip-shaped bulge, the strip-shaped bulge is communicated with the interior of the rubber bags, and when the rubber bags are filled with gas, the bulge is filled to play a role of enclosure.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (6)
1. A maintenance method suitable for winter construction of a hanging basket suspension casting box girder in a strong wind area is characterized by comprising the following steps of:
step one, sealing the front end and the rear end of a box girder;
step two, filling hot steam into the closed box chamber;
thirdly, paving a heat insulation material on the surface of the template, and paving a heat insulation layer on the top surface of the box girder;
the heat preservation distributes along the longitudinal direction of bridge, the heat preservation includes:
the frame body is of a cuboid structure erected on the top surface of the box girder through a plurality of movable clamping devices, two side surfaces of the frame body along the transverse direction of the bridge are respectively and correspondingly sunken to form two pairs of sliding chutes, and the two pairs of sliding chutes are respectively arranged in a staggered manner along the vertical direction;
the two side plates are respectively arranged in the two pairs of sliding grooves in a sliding manner; one end of the side plate, which is far away from the frame body, is vertically and downwards connected with a telescopic rod, and the lower end of the side plate is detachably connected with a clamping structure;
the bottom of the frame body and the bottom of the side plate are both adhered with a rubber bag, and a layer of linen is adhered to the outer part of the rubber bag; a plurality of rubber blocks are bonded in the rubber bag along the height direction of the rubber bag, and two ends of each rubber block are respectively fixed on the upper surface and the lower surface of the rubber bag; the plurality of rubber blocks divide the inner space of the rubber bag into a plurality of relatively independent subspaces; and each rubber block is provided with a through hole so as to communicate the two adjacent subspaces; the rubber bag is provided with an inflation inlet for external inflation;
and each subspace in the rubber bag is filled with phase change material particles, wherein the filling amount of the phase change material particles is 1/20 of the volume of the subspace after being inflated.
2. The maintenance method suitable for the winter construction of the hanging basket suspension casting box girder in the strong wind area as claimed in claim 1, wherein a plurality of through holes are formed in the top surface of the box girder along two side edges of the longitudinal direction of the bridge.
3. The maintenance method suitable for the winter construction of the hanging basket suspension casting box girder in the strong wind area as claimed in claim 1,
the movable clamping device comprises:
the T-shaped plate body is inversely and vertically welded at the bottom of the frame body;
the T-shaped plate body is clamped in the clamping groove and can move and not fall off; elastic rubber particles are filled in the T-shaped groove in the clamping groove except for the T-shaped plate body.
4. The maintenance method suitable for the winter construction of the suspended-basket suspended-casting box girder in the strong wind area as claimed in claim 1, wherein the clamping structure comprises:
the vertical rod is coaxially connected to the lower end of the telescopic rod;
the inclined plates are uniformly distributed around the lower end of the vertical rod in an annular manner; the inclined plate is obliquely arranged, the lower end of the inclined plate is fixed on the vertical rod, and the upper end of the inclined plate is separated from the vertical rod by a certain distance; a plurality of torsion springs are clamped in an accommodating space formed between the inclined plate and the vertical rod; the included angle of the torsion spring is just clamped in the included angle between the lower end of the inclined plate and the vertical rod, and two sides of the torsion spring are respectively fixed on the inclined plate and the vertical rod; the top ends of the inclined plates are fixed by an annular elastic component to form an annular spring; the swash plate outside sets up a dismantlement board along its length direction slidable, wherein, the swash plate with the one side of dismantling the board contact is inwards sunken along its length direction respectively and is formed a shape of falling protruding recess, outside protrusion and form a shape of protruding font draw runner, the slip card that the shape of protruding font draw runner does not fall is established in the shape of protruding font recess.
5. The curing method for winter construction of hanging basket type cantilever box girder in strong wind area as claimed in claim 1, wherein the rubber bag corresponding to said side plate is protruded downward along the longitudinal direction of the bridge and near the outer side of the bridge to form an elongated protrusion communicating with the inside of said rubber bag, and when said rubber bag is filled with gas, the protrusion is filled to perform the function of enclosure.
6. The maintenance method suitable for winter construction of the hanging basket cantilever casting box girder in the strong wind area as claimed in claim 4, wherein the vertical rod is coaxially connected to the lower end of the telescopic rod, and specifically comprises:
the outer part of the telescopic rod is provided with an external thread;
the vertical rod is hollow, internal threads are arranged in the vertical rod, and the vertical rod are in threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810732392.9A CN108978472B (en) | 2018-07-05 | 2018-07-05 | Maintenance method suitable for winter construction of hanging basket suspension casting box girder in strong wind area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810732392.9A CN108978472B (en) | 2018-07-05 | 2018-07-05 | Maintenance method suitable for winter construction of hanging basket suspension casting box girder in strong wind area |
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| Publication Number | Publication Date |
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| CN108978472A CN108978472A (en) | 2018-12-11 |
| CN108978472B true CN108978472B (en) | 2020-03-31 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4207827A (en) * | 1976-08-20 | 1980-06-17 | Michel Gondouin | System, tooling and method of construction of cryogenic tanks for LNG tankers and for LNG storage |
| CN202293015U (en) * | 2011-11-09 | 2012-07-04 | 中铁二十二局集团有限公司 | Steam curing cover of box girder |
| CN103266772B (en) * | 2013-05-20 | 2015-07-22 | 山东恒建工程监理咨询有限公司 | Curing method used for highway engineering construction concrete in winter |
| KR101956696B1 (en) * | 2016-12-06 | 2019-03-12 | 홍주이엔씨(주) | The mould for fslm girder having variable bottom mould |
| CN107160551A (en) * | 2017-06-28 | 2017-09-15 | 中国电建集团贵阳勘测设计研究院有限公司 | Construction method for prefabricating box girder concrete in cold area in winter |
| CN207525629U (en) * | 2017-11-16 | 2018-06-22 | 中铁四局集团第四工程有限公司 | A kind of moisturizing is kept out the wind, and protection type is multi-functional to block maintenance plate |
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