CN215052133U - Steel case roof beam is alternately construction supporting structure from top to bottom - Google Patents

Steel case roof beam is alternately construction supporting structure from top to bottom Download PDF

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Publication number
CN215052133U
CN215052133U CN202120017861.6U CN202120017861U CN215052133U CN 215052133 U CN215052133 U CN 215052133U CN 202120017861 U CN202120017861 U CN 202120017861U CN 215052133 U CN215052133 U CN 215052133U
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China
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steel
box girder
steel box
parallel channel
supporting
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CN202120017861.6U
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吴树广
郗振东
赵付强
包迎春
高腾飞
苑广浩
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Road and Bridge International Co Ltd
China Communications Road and Bridge North China Engineering Co Ltd
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Road and Bridge International Co Ltd
China Communications Road and Bridge North China Engineering Co Ltd
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Abstract

The application discloses cross construction supporting structure about steel box girder, including first support module, bolster and second support module, first support module includes a plurality of first stands, a plurality of first parallel channel-section steel and a plurality of first bracing, a plurality of first parallel channel-section steel weld respectively between two adjacent first stands, a plurality of first bracing weld respectively in the junction between first parallel channel-section steel and first stand, the support I-steel is installed on the upper portion of bolster, the upper portion of supporting the I-steel is erect and is equipped with U type bottom steel box girder segment section, the distributive girder has been erect on the upper portion of U type bottom steel box girder segment, second support module includes a plurality of second stands, a plurality of second parallel channel-section steel and a plurality of second bracing, the upper portion of distributive girder is erect to a plurality of second stands. This scheme can realize installing bottom steel box girder earlier, installs upper steel box girder again, shortens construction cycle, improves the efficiency of construction.

Description

Steel case roof beam is alternately construction supporting structure from top to bottom
Technical Field
The application relates to the technical field of bridge engineering, in particular to a steel box girder up-down crossing construction support structure.
Background
Along with the rapid development of urban roads, especially urban bridges, driven by the development of urban economic construction in China, the urban bridges are often designed to be overlapped in a crossed manner by an upper layer and a lower layer due to terrain limitation, especially at multidirectional plane intersections, so as to reduce the difficulty and cost of land acquisition and removal.
The bridge cross design brings a series of construction problems, for example, the upper layer and the lower layer are both steel box girders (namely the steel box girders) or the lower layer is the steel box girders and the upper layer is in a steel structure box girder form, the cross design meets the urban traffic and land acquisition limitation and brings great construction difficulty, and particularly in municipal engineering construction, the bridge cross design has extremely severe requirements on construction period.
The traditional construction method is to construct a high layer firstly and then construct a low layer, and the construction sequence of work is determined from top to bottom, and the construction method has the following defects: firstly, in general, the upper clearance height and the lower clearance height of the upper intersection and the lower intersection of the steel box girder are slightly larger than 5m, if the bridge deck is wider or the construction site is limited, after the upper layer construction is finished, due to the two-layer design clearance limitation, the lower layer steel box girder support and the girder body are difficult to erect (the crane jib conflicts with the upper layer finished steel box girder); secondly, firstly, erecting a high-rise steel beam support, after the whole welding construction of the high-rise steel box girder is completed, dismantling the high-rise support and re-erecting a steel pipe support of the low-rise steel box girder, and repeatedly erecting and dismantling the support, wherein the construction period is long, the efficiency is low, and a sufficiently long construction period is required as a basis.
In the face of the demand of rapid development of urban construction and urgent travel of urban residents, how to ensure that the construction of the steel structure bridge which is crossed up and down is completed safely and efficiently in the shortest construction time becomes a problem which must be faced and solved by bridge builders.
SUMMERY OF THE UTILITY MODEL
The main aim at of this application provides a steel box girder alternately construction supporting structure from top to bottom to in solving the correlation technique, adopt earlier upper strata construction, the construction of back lower floor, the difficulty is erect to lower floor steel box girder, construction cycle length, the problem of inefficiency.
In order to realize the above-mentioned purpose, the application provides a steel box girder is cross construction supporting structure from top to bottom, including first support module, pad roof beam and second support module.
First support module is provided with a plurality of, first support module includes a plurality of first stands, a plurality of first parallel connection channel-section steel and a plurality of first bracing, and is a plurality of first parallel connection channel-section steel welds respectively in adjacent two between the first stand, and is a plurality of first bracing weld respectively in first parallel connection channel-section steel with the splice between the first stand.
The cushion beam is arranged on the upper portions of the first support modules, the supporting I-shaped steel is arranged on the upper portions of the cushion beams, U-shaped bottom layer steel box girder sections are erected on the upper portions of the supporting I-shaped steel, and the distribution beams are erected on the upper portions of the U-shaped bottom layer steel box girder sections.
The second support module is provided with a plurality of, the second support module includes a plurality of second stands, a plurality of second parallel channel-section steel and a plurality of second bracing, and is a plurality of the second stand erects in the upper portion of distribution beam, a plurality of the second parallel channel-section steel welds respectively between two adjacent second stands, and a plurality of the second bracing weld respectively in the second parallel channel-section steel with the welding department between the second stand.
Preferably, still include the concrete foundation layer, the upper portion of concrete foundation layer is provided with pre-buried steel sheet, pre-buried steel sheet welding has the split heads muscle, the split heads muscle stretches into the inside of concrete foundation layer, it is a plurality of first stand all weld in the upper portion of pre-buried steel sheet.
Preferably, the number of the first upright columns is at least four, and the first upright columns are all made of steel pipes.
Preferably, the first parallel channel steels and the first inclined struts are 14a channel steels.
Preferably, a plurality of the pad beams are all arranged into double I40a I-shaped steel.
Preferably, the support I-steel is provided with a plurality of, and is a plurality of support I-steel for the filler beam is the equidistance setting, and is a plurality of the height of support I-steel all is 25cm-35cm, and is a plurality of support I-steel is I20I-steel.
Preferably, the distribution beam is provided as a double I40a I-beam, and the distribution beam is pressed on the top surface of the steel box girder web of the U-shaped bottom layer steel box girder segment in a full length mode.
Preferably, the lower part of the distribution beam is provided with a reinforcing rod, and the lower wall of the reinforcing rod is tightly attached to the upper wall of the U-shaped bottom layer steel box girder segment.
Preferably, the number of the second upright columns is four, and the second upright columns are all made of steel pipes.
Preferably, the second parallel channel steels and the second inclined struts are 14a channel steels.
In the embodiment of the application, a support structure for up-and-down cross construction of a steel box girder is provided, a first support module supports a bottom steel box girder segment, a pad beam, an I-shaped steel and a distribution beam are mounted on the bottom steel box girder segment, a second support module is mounted on the upper portion of the distribution beam, and an upper steel box girder is mounted on the upper portion of the second support module.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic cross-sectional front view of a construction support structure for steel box girders crossing up and down according to an embodiment of the application;
FIG. 2 is an enlarged schematic view of a pad beam part structure of a steel box beam up-down crossing construction support structure provided according to an embodiment of the application;
fig. 3 is a schematic structural section view of a concrete foundation layer part of a steel box girder up-down crossing construction support structure provided according to an embodiment of the application.
In the figure: 100. a first rack module; 110. a first upright post; 120. a first parallel channel steel; 130. A first diagonal brace; 200. a bolster; 210. supporting the I-shaped steel; 220. u-shaped bottom steel box girder segments; 230. a distribution beam; 231. a reinforcing bar; 300. a second rack module; 310. a second upright post; 320. a second parallel channel steel; 330. a second diagonal brace; 400. a concrete foundation layer; 410. pre-burying a steel plate; 420. a horse stool rib.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1 to 3, the present application provides a steel box girder up-down crossing construction bracket structure, which includes a first bracket module 100, a pad girder 200, and a second bracket module 300.
Referring to fig. 1, a plurality of first bracket modules 100 are provided, each first bracket module 100 includes a plurality of first vertical columns 110, a plurality of first parallel channel beams 120 and a plurality of first inclined struts 130, when the first vertical columns 110 are specifically arranged, at least four first vertical columns 110 are provided, each first vertical column 110 is arranged as a steel pipe, each steel pipe is arranged as a phi 426 × 8mm steel pipe, each first parallel channel beam 120 is welded between two adjacent first vertical columns 110, each first inclined strut 130 is welded at a welding position between each first parallel channel beam 120 and each first inclined strut 130, when the first bracket modules are specifically arranged, each first parallel channel beam 120 and each first inclined strut 130 are arranged as a 14a channel beam, and the whole structure achieves a good and stable supporting effect.
Referring to fig. 1 and 2, a pad beam 200 is installed on the upper portions of a plurality of first support modules 100, when the pad beam is specifically installed, a plurality of pad beams 200 are all set to be double-spliced I40a I-beams, supporting I-beams 210 are installed on the upper portions of the pad beams 200 through welding, when the pad beam is specifically installed, a plurality of supporting I-beams 210 are arranged, the supporting I-beams 210 are equidistantly arranged relative to the pad beam 200, the height of the supporting I-beams 210 is 25cm-35cm, the height of the supporting I-beams 210 is I20I-beams, the supporting I-beams 210 have a good supporting effect, and when the pad beam is subsequently disassembled, the pad beam is cut off from the welding position, and then the disassembly can be completed, a U-shaped bottom layer steel box beam section 220 is erected on the upper portion of the supporting I-beams 210, and a distribution beam 230 is erected on the upper portion of the U-shaped bottom layer steel box beam section 220.
In this embodiment, the distribution beam 230 is configured as a double-spliced I40a I-beam, the distribution beam 230 is generally pressed on the top surface of the steel box girder web of the U-shaped bottom layer steel box girder segment 220, the lower portion of the distribution beam 230 is provided with the reinforcing rod 231, the reinforcing rod 231 is configured as a circular upright or an I-beam, so that the stress is more uniform, and the lower wall of the reinforcing rod 231 is tightly attached to the upper wall of the U-shaped bottom layer steel box girder segment 220.
Referring to fig. 1, a plurality of second support modules 300 are provided, each second support module 300 includes a plurality of second upright posts 310, a plurality of second parallel channel beams 320 and a plurality of second diagonal braces 330, when specifically setting up, the number of second upright posts 310 is four, the second upright posts 310 are all set to be steel pipes, the second upright posts 310 are erected on the upper portion of the distribution beam 230, the second parallel channel beams 320 are respectively welded between two adjacent second upright posts 310, the second diagonal braces 330 are respectively welded at the welding positions between the second parallel channel beams 320 and the second upright posts 310, and when specifically setting up, the second parallel channel beams 320 and the second diagonal braces 330 are all set to be 14a channel beams.
Referring to fig. 1 and 3, the concrete foundation layer 400 further includes an embedded steel plate 410 disposed on the upper portion of the concrete foundation layer 400, a split heads bar 420 is welded to the embedded steel plate 410, the split heads bar 420 extends into the concrete foundation layer 400, the first columns 110 are all welded to the upper portion of the embedded steel plate 410, and the embedded steel plate 410 is used to support the first columns 110 well.
Specifically, this steel box girder alternately constructs the structural principle of supporting structure from top to bottom: when the steel box girder is used, the vertical crossing area (orthographic projection crossing area) of the upper layer steel box girder and the lower layer steel box girder is determined, the C25 concrete foundation is poured after the foundation detection is qualified, the steel plate 410 is embedded in the position, corresponding to the steel pipe upright post, of the concrete foundation, and the split heads 420 are welded at the bottom of the embedded steel plate 410 and penetrate into the concrete core, so that the embedded steel plate 410 is fixed;
welding the first support module 100, wherein the first upright post 110, the first inclined support 130 and the first parallel channel steel 120 are connected one by one on the ground according to 6m-9m subsections to form a whole, the first support module 100 and the embedded steel plate 410 are fixed by full welding to ensure the stability of the first support module, then the first support module 100 is continuously installed to the designed height, and the first support modules 100 are connected into a whole by welding;
after the first support module 100 is installed to a designed height, a top longitudinal and transverse pad beam 200 is installed, and supporting I-shaped steel 210 is vertically and uniformly arranged on the longitudinal and transverse pad beam 200;
after the first support module 100 is installed, U-shaped bottom layer steel box girder segments 220 are symmetrically erected in a left-right mode in stages, all the segments are welded after installation is completed, a distribution beam 230 is transversely placed and welded on the U-shaped bottom layer steel box girder segments 220 in a full length mode, the distribution beam 230 is in a full length mode and covers the top surface of a steel box girder web plate, stress is uniform, at the moment, in order to guarantee the safety and stability of the low layer steel box girder structure and avoid the deformation of the U-shaped web plate structure, a round upright post or I-shaped steel is welded on the vertical face of the web plate under the distribution beam 230 in a tight fit mode for structural reinforcement, the lower portion of the round upright post or I-shaped steel post is tightly attached to the steel box girder bottom plate, the top portion of the bottom plate of the steel box girder is tightly attached to a top flange plate, then I-shaped steel with the same type is adopted for transversely connecting a reinforcement structure, and the U-shaped web plate of the steel box girder forms a square integral stress structure;
erecting a second support module 300 on the double-spliced I40a I-steel distribution beam, wherein the installation steps of the second support module 300 are the same as those of the first support module 300, and erecting and welding top-layer steel box girder sections after the installation is finished;
forming an upper layer of support, a lower layer of support and a steel box girder, directly cutting the supporting I-steel 210 by a cutting machine after the upper layer of steel box girder is integrally welded, removing the second support module 300 and the distribution girder 230 after force is removed, removing the I-steel processed in the web plate of the lower layer of steel box girder, and then removing the lower layer of upright post support, wherein the removing sequence of the integral support is opposite to the erection and erection sequence.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a steel box girder alternately construction support structure from top to bottom which characterized in that includes:
the first support module is provided with a plurality of first support modules, each first support module comprises a plurality of first stand columns, a plurality of first parallel channel steel and a plurality of first inclined struts, the plurality of first parallel channel steel are respectively welded between two adjacent first stand columns, and the plurality of first inclined struts are respectively welded at the welding positions between the first parallel channel steel and the first stand columns;
the cushion beam is arranged on the upper parts of the first support modules, the upper part of the cushion beam is provided with a supporting I-shaped steel, the upper part of the supporting I-shaped steel is provided with a U-shaped bottom layer steel box girder section, and the upper part of the U-shaped bottom layer steel box girder section is provided with a distribution beam;
the second support module is provided with a plurality of, the second support module includes a plurality of second stands, a plurality of second parallel channel-section steel and a plurality of second bracing, and is a plurality of the second stand erects in the upper portion of distributive girder, it is a plurality of the second parallel channel-section steel welds respectively in adjacent two between the second stand, and is a plurality of the second bracing weld respectively in the second parallel channel-section steel with the welding department between the second stand.
2. The up-down crossing construction support structure of the steel box girder as claimed in claim 1, further comprising a concrete foundation layer, wherein an embedded steel plate is arranged on the upper portion of the concrete foundation layer, split heads are welded on the embedded steel plate, the split heads stretch into the concrete foundation layer, and the first columns are all welded on the upper portion of the embedded steel plate.
3. The up-down crossing construction bracket structure of a steel box girder according to claim 1, wherein the number of the first columns is at least four, and a plurality of the first columns are all made of steel pipes.
4. The up-down crossing construction bracket structure of a steel box girder according to claim 1, wherein a plurality of the first parallel channel steels and a plurality of the first diagonal braces are all provided as 14a channel steels.
5. The up-down crossing construction bracket structure of a steel box girder as claimed in claim 1, wherein a plurality of the pad girders are all configured as double-spliced I40a I-steel.
6. The up-down crossing construction bracket structure of a steel box girder as claimed in claim 1, wherein the supporting h-beams are provided in plurality, a plurality of the supporting h-beams are equidistantly arranged with respect to the pad girder, the height of the plurality of the supporting h-beams is 25cm-35cm, and the plurality of the supporting h-beams are I20 h-beams.
7. The steel box girder up-down crossing construction bracket structure as claimed in claim 1, wherein the distribution beam is provided as a double I40a I-steel, and the distribution beam is pressed on the top surface of the steel box girder web of the U-shaped bottom layer steel box girder segment by its entire length.
8. The steel box girder up-down crossing construction bracket structure as claimed in claim 7, wherein a reinforcing bar is installed at a lower portion of the distribution beam, and a lower wall of the reinforcing bar is closely attached to an upper wall of the U-shaped underlying steel box girder segment.
9. The up-down crossing construction bracket structure of a steel box girder according to claim 1, wherein four second columns are provided, and the second columns are all provided as steel pipes.
10. The up-down crossing construction bracket structure of a steel box girder as claimed in claim 1, wherein a plurality of the second parallel channel steels and a plurality of the second diagonal braces are all provided as 14a channel steels.
CN202120017861.6U 2021-01-05 2021-01-05 Steel case roof beam is alternately construction supporting structure from top to bottom Active CN215052133U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120017861.6U CN215052133U (en) 2021-01-05 2021-01-05 Steel case roof beam is alternately construction supporting structure from top to bottom

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Application Number Priority Date Filing Date Title
CN202120017861.6U CN215052133U (en) 2021-01-05 2021-01-05 Steel case roof beam is alternately construction supporting structure from top to bottom

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112726415A (en) * 2021-01-05 2021-04-30 中交路桥建设有限公司 Steel box girder up-and-down crossing construction support structure and construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112726415A (en) * 2021-01-05 2021-04-30 中交路桥建设有限公司 Steel box girder up-and-down crossing construction support structure and construction method

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