CN209941511U - Supporting device for high-altitude folding of bridge steel box girder by section hoisting - Google Patents

Supporting device for high-altitude folding of bridge steel box girder by section hoisting Download PDF

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CN209941511U
CN209941511U CN201920551106.9U CN201920551106U CN209941511U CN 209941511 U CN209941511 U CN 209941511U CN 201920551106 U CN201920551106 U CN 201920551106U CN 209941511 U CN209941511 U CN 209941511U
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supporting
steel box
steel
web member
capping
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CN201920551106.9U
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刘金芳
曹波
周敬
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China Metallurgical Construction Engineering Group Co Ltd
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China Metallurgical Construction Engineering Group Co Ltd
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Abstract

The utility model discloses a supporting device for high-altitude folding of bridge steel box girder by section hoisting, which comprises a supporting platform, a capping beam and a supporting column, wherein the supporting device is formed by a plurality of supporting frames which are arranged in parallel in a line, each supporting frame is formed by four upright posts which are vertically arranged, a plurality of horizontal web members which are horizontally arranged and a plurality of diagonal web members, all the upright posts are arranged at certain intervals and positioned at four vertexes of a rectangle, the upper and lower layers of the horizontal web members respectively form a plurality of rectangular frames with the corresponding two upright posts, and the diagonal web members are arranged along the diagonal of the rectangular frames; the two capping beams are arranged at the top end of the supporting platform and are respectively positioned on the cross web members in the length direction of the supporting platform; the supporting columns are uniformly and symmetrically arranged on the upper surfaces of the two capping beams, the top ends of all the supporting columns on the same capping beam have a certain gradient, and the gradient is consistent with the gradient of the corresponding two sections of steel box girders to be installed. The device has the advantages of convenient assembly and disassembly, large bearing capacity and reusability, and can meet the requirements of different steel box girder installation heights.

Description

Supporting device for high-altitude folding of bridge steel box girder by section hoisting
Technical Field
The utility model relates to an engineering steel construction technical field of building, bridge construction, concretely relates to strutting arrangement that bridge steel case roof beam segmentation hoist and mount high altitude was foldd.
Background
In municipal traffic bridge engineering, an interval with large bridge pier span generally adopts a steel box girder structure, the section of the steel box girder in the form is large, the transverse length and the longitudinal length are large, and the construction method of manufacturing, assembling on site and integrally hoisting a segmented and amplitude-divided unit module in a factory is usually adopted, but sometimes the construction method of integrally hoisting the steel box girder in a segmented and amplitude-divided manner and assembling at high altitude needs to be considered for the reasons of controlling engineering cost and reducing mechanical cost or the reason that no field assembling field exists in some municipal road reconstruction projects. In the field of building and bridge construction, hoisting operation generally needs to involve the use of measure supports, and the traditional method is to set up a steel pipe scaffold on the ground, use a finished scaffold or adopt a traditional temporary integral steel support. The steel pipe scaffold is erected, a large amount of manpower and material resources are consumed, the loading and unloading time is long, the efficiency is low, and the acceptance procedure is complex; the finished scaffold is convenient to install and detach, but the bearing capacity of the finished scaffold is too small to meet the construction requirements, and obviously cannot meet the requirements of large hoisting operation projects; the whole steel shotcrete of tradition interim, the component size is huge, and transportation loading, unloading, on-the-spot secondary transport and installation are comparatively inconvenient, generally for accomplishing concrete engineering project customization, hardly recycles moreover, cause very big waste, and economic nature is relatively poor.
Disclosure of Invention
The aforesaid that exists to prior art is not enough, the utility model aims at providing just that easy dismounting, bearing capacity are big, repeatedly usable's supporting device that bridge steel case roof beam segmentation hoist and mount high altitude folds.
The technical scheme of the utility model is realized like this:
supporting device that bridge steel box girder segmentation hoist and mount high altitude was foldd, including supporting platform, capping beam and support column, supporting platform is by a plurality of support frames and becomes one row side by side, and every support frame comprises the horizontal web member and a plurality of oblique web member that four stands of vertical setting, a plurality of levels set up, and all stand interval certain distances set up and lie in four summits of rectangle, and every horizontal web member is located between the adjacent coexistence post and is equidistant setting formation laminated structure on the direction of height of stand, and upper and lower two-layer horizontal web member becomes a plurality of rectangle frames with the coexistence post that corresponds respectively, oblique web member sets up along the diagonal of rectangle frame.
The two capping beams are arranged at the top end of the supporting platform and are respectively positioned on the cross web members in the length direction of the supporting platform; the support column is a plurality of, and even symmetry sets up two capping beam upper surfaces and is located the top of all support columns on same capping beam and has a grade, the grade is unanimous with the grade of two sections steel case roof beams of waiting to install that correspond.
Furthermore, the capping beam is an H-shaped steel beam arranged horizontally, the lower flange plate of the H-shaped steel beam is fixed with the supporting platform, and the supporting columns are fixed on the upper surface of the upper flange plate of the H-shaped steel beam.
Furthermore, two sides of the H-shaped steel beam web plate corresponding to the fixed positions of the support columns and the H-shaped steel beams are provided with three groups of stiffening plates to strengthen the support strength of the H-shaped steel beams.
Furthermore, the upright posts of the support frame are made of round steel columns, and the transverse web members and the inclined web members are supported by angle steels; each upright post is composed of a plurality of sections of round steel posts, two ends of each section of round steel post are respectively provided with a flange, and two adjacent sections of round steel posts penetrate through the two corresponding flanges through threaded fasteners to be connected and fixed; the both ends of horizontal web member and oblique web member are equipped with all and are equipped with the connecting hole, and four apex angles that lie in same rectangle frame simultaneously are equipped with the connecting plate, the connecting plate is equipped with the connecting hole that horizontal web member and oblique web member connecting hole correspond with the ring flange fixed connection that corresponds on the connecting plate, then through threaded fastener with horizontal web member and oblique web member respectively with connecting plate fixed connection.
Furthermore, the support columns are eight, and four and pairwise symmetrical support columns are arranged on each capping beam.
Furthermore, a jack is respectively placed on the capping beams on the left side and the right side of the folding seam of the two sections of steel box girders to be installed corresponding to the two capping beams, and when the height of the folding seam of the two sections of steel box girders to be installed is uneven, the folding seam can be aligned by adjusting the jack.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a bolted connection is fixed, dismantles and simple to operate, and the bearing capacity is big, repeatedly usable to supporting platform's demand that highly satisfies different steel box girder mounting heights is adjusted to the accessible.
Drawings
Fig. 1-the structure of the present invention is schematically illustrated.
Figure 2-front view of the present invention.
Fig. 3-the structure diagram of the utility model in use.
Wherein: 1-upright column; 2-capping the beam; 3-a support column; 4-a jack; 5-a stiffening plate; 6-a transverse web member; 7-diagonal web members; 8-steel box girders to be installed.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, fig. 2 and fig. 3, strutting arrangement that bridge steel box girder segmentation hoist and mount high altitude was foldd, strutting arrangement includes supporting platform, capping beam 2 and support column 3, supporting platform is by a plurality of support frames and is lined up into one, and every support frame comprises the cross web member 6 and a plurality of oblique web member 7 of the stand 1, a plurality of level setting of four vertical settings, and all stand 1 intervals certain distance sets up and is located four summits of rectangle, and every cross web member 6 is located between the adjacent two stands 1 and is equidistant to set up on the direction of height of stand 1 and form laminated structure, and upper and lower two-layer cross web member 6 forms a plurality of rectangle frames with the coexistence post 1 that corresponds respectively, diagonal setting along the rectangle frame of oblique web member 7.
The two capping beams 2 are arranged at the top end of the supporting platform and are respectively positioned on the cross web members 6 in the length direction of the supporting platform; the support columns 3 are a plurality of, and the top of all the support columns 3 on two capping beams are uniformly and symmetrically arranged on the upper surfaces of the two capping beams and located on the same capping beam has a certain gradient, and the gradient is consistent with the gradient of the corresponding two sections of steel box girders 8 to be installed.
The capping beam 2 is an H-shaped steel beam arranged horizontally, a lower flange plate of the H-shaped steel beam is fixed with the supporting platform, and the supporting column is fixed on the upper surface of an upper flange plate of the H-shaped steel beam.
And two sides of the H-shaped steel beam web plate corresponding to the fixed positions of the support columns 3 and the H-shaped steel beams are provided with three groups of stiffening plates 5 for strengthening the support strength of the H-shaped steel beams.
The supporting frame is characterized in that the upright columns 1 of the supporting frame are made of round steel columns, the cross web members 6 and the oblique web members 7 are supported by angle steel, each upright column is composed of a plurality of sections of round steel columns, two ends of each section of round steel column are respectively provided with a flange, two adjacent sections of round steel columns penetrate through the two corresponding flanges through bolts to be connected and fixed, two ends of each cross web member and each oblique web member are respectively provided with a connecting hole, four vertex angles located on the same rectangular frame are provided with connecting plates, the connecting plates are fixedly connected with the corresponding flanges, the connecting plates are provided with connecting holes corresponding to the connecting holes of the cross web members and the oblique web members, and then the cross web members and the oblique web members are respectively and fixedly connected with the connecting plates through the bolts, the length, the width and the height of each rectangular frame are set to be 1 ~ 2m, the mounting requirements.
The support columns 3 are eight, and four support columns are arranged on each capping beam in a pairwise symmetrical mode. The support column can be square steel pipe, circular steel tube etc. and the lower extreme welding of all support columns is at the coplanar at the capping beam upper surface, and the high setting of support column is different for the top of all support columns is certain slope, treats when two sections that the installation steel box girder is placed behind the support column, also is corresponding slope.
And when the heights of the folding seams of the two steel box girders to be installed are uneven, the folding seams can be aligned by adjusting the jacks 4. The jack is light and small lifting equipment which takes a rigid jacking piece as a working device and jacks a heavy object through a top bracket or a bottom supporting claw within a small stroke. The jack is used as an auxiliary tool, when the height of a folding seam of the two sections of steel box girders to be installed is uneven, the folding seam is aligned by adjusting the working height of the jack, and therefore welding is facilitated. The jack can influence the installation gradient of the steel box girder, and only needs to be controlled within an error range.
After a supporting platform, a capping beam and a supporting column of the supporting device are built on the ground, the built supporting device is hoisted to a position below a folding seam of two steel box girders to be installed by using a truck crane and is fixed, then the two steel box girders to be installed are hoisted in sequence, one end of each steel box girder to be installed is placed on a pier, the other end of each steel box girder is placed on the supporting column of a supporting unit, so that the length of the edge of a bottom plate of the steel box girder to be installed, which extends out of the supporting unit, is equal, and meanwhile, the folding seam of the two steel box girders to be installed is equally divided into the supporting device; secondly, respectively placing a jack on the capping beams on the left side and the right side of the folding seam of the two sections of steel box girders to be installed, and aligning the folding seams by adjusting the jacks when the heights of the folding seams of the two sections of steel box girders to be installed are different; and finally, adjusting the welding distance of the two sections of steel box girders, and sequentially welding the bottom plate, the top plate and the two side webs of the two sections of steel box girders to be installed after the welding distance is adjusted in place.
Finally, it should be noted that the above-mentioned embodiments of the present invention are only examples for illustrating the present invention, and are not limitations to the embodiments of the present invention. Variations and modifications in other variations will occur to those skilled in the art upon reading the foregoing description. Not all embodiments are exhaustive. All obvious changes or variations which are introduced by the technical solution of the present invention are still within the scope of the present invention.

Claims (6)

1. The supporting device for high-altitude folding of the bridge steel box girder in the segmented hoisting process is characterized by comprising a supporting platform, a capping beam and supporting columns, wherein the supporting platform is formed by arranging a plurality of supporting frames in a row in parallel, each supporting frame consists of four vertically arranged stand columns, a plurality of horizontally arranged cross web members and a plurality of diagonal web members, all the stand columns are arranged at certain intervals and positioned at four vertexes of a rectangle, each cross web member is arranged between two adjacent stand columns and arranged at equal intervals in the height direction of the stand columns to form a layered structure, the upper and lower layers of cross web members respectively form a plurality of rectangular frames with the two corresponding stand columns, and the diagonal web members are arranged along the diagonal lines of the rectangular frames;
the two capping beams are arranged at the top end of the supporting platform and are respectively positioned on the cross web members in the length direction of the supporting platform; the support column is a plurality of, and even symmetry sets up two capping beam upper surfaces and is located the top of all support columns on same capping beam and has a grade, the grade is unanimous with the grade of two sections steel case roof beams of waiting to install that correspond.
2. The supporting device for sectional hoisting and high-altitude folding of the bridge steel box girder according to claim 1, wherein the capping beam is a horizontally arranged H-shaped steel beam, a lower flange plate of the H-shaped steel beam is fixed with the supporting platform, and the supporting column is fixed on the upper surface of an upper flange plate of the H-shaped steel beam.
3. The supporting device for bridge steel box girder segmental hoisting high-altitude folding according to claim 2, wherein three groups of stiffening plates are arranged on two sides of the web plate of the H-shaped steel girder corresponding to the fixing positions of the supporting columns and the H-shaped steel girder, so as to reinforce the supporting strength of the H-shaped steel girder.
4. The supporting device for bridge steel box girder segmental hoisting high-altitude folding according to claim 1, wherein the upright post of the supporting frame is made of a round steel column, and the transverse web member and the inclined web member are supported by angle steel; each upright post is composed of a plurality of sections of round steel posts, two ends of each section of round steel post are respectively provided with a flange, and two adjacent sections of round steel posts penetrate through the two corresponding flanges through threaded fasteners to be connected and fixed; the both ends of horizontal web member and oblique web member are equipped with all and are equipped with the connecting hole, and four apex angles that lie in same rectangle frame simultaneously are equipped with the connecting plate, the connecting plate is equipped with the connecting hole that horizontal web member and oblique web member connecting hole correspond with the ring flange fixed connection that corresponds on the connecting plate, then through threaded fastener with horizontal web member and oblique web member respectively with connecting plate fixed connection.
5. The supporting device for bridge steel box girder segmental hoisting high-altitude folding according to claim 1, wherein the number of the supporting columns is eight, and four supporting columns are respectively arranged on each capping beam and are arranged symmetrically in pairs.
6. The supporting device for high-altitude folding of the bridge steel box girder through segmented hoisting according to claim 1, wherein a jack is respectively arranged on the capping beams on the left side and the right side of the folding seam of the two steel box girders to be installed, which correspond to the two capping beams, and when the height of the folding seam of the two steel box girders to be installed is not equal, the folding seam is aligned by adjusting the jacks.
CN201920551106.9U 2019-04-22 2019-04-22 Supporting device for high-altitude folding of bridge steel box girder by section hoisting Active CN209941511U (en)

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CN201920551106.9U CN209941511U (en) 2019-04-22 2019-04-22 Supporting device for high-altitude folding of bridge steel box girder by section hoisting

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Application Number Priority Date Filing Date Title
CN201920551106.9U CN209941511U (en) 2019-04-22 2019-04-22 Supporting device for high-altitude folding of bridge steel box girder by section hoisting

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111254804A (en) * 2020-02-18 2020-06-09 中交路桥建设有限公司 Construction method of steel box girder bridge of overpass highway
CN111593675A (en) * 2020-06-12 2020-08-28 重庆渝高科技产业(集团)股份有限公司 Supporting assembly of box girder and construction method of box girder
CN113463523A (en) * 2021-08-13 2021-10-01 中建八局第二建设有限公司 Stable support frame assembly for expressway steel box girder construction and construction method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111254804A (en) * 2020-02-18 2020-06-09 中交路桥建设有限公司 Construction method of steel box girder bridge of overpass highway
CN111593675A (en) * 2020-06-12 2020-08-28 重庆渝高科技产业(集团)股份有限公司 Supporting assembly of box girder and construction method of box girder
CN113463523A (en) * 2021-08-13 2021-10-01 中建八局第二建设有限公司 Stable support frame assembly for expressway steel box girder construction and construction method thereof

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