CN212714580U - Cast-in-place box girder cantilever - Google Patents
Cast-in-place box girder cantilever Download PDFInfo
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- CN212714580U CN212714580U CN202020927746.8U CN202020927746U CN212714580U CN 212714580 U CN212714580 U CN 212714580U CN 202020927746 U CN202020927746 U CN 202020927746U CN 212714580 U CN212714580 U CN 212714580U
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Abstract
The application discloses cast-in-place box girder cantilever crane. Cast-in-place box girder cantilever support includes the support body, the spandrel girder, the adjustable support piece of vertical length, slant adjustable support piece of length and tripod, first top is installed on the upper portion of support body and is held in the palm, the spandrel girder is installed on the upper portion of first top and is held in the palm, first distribution roof beam and second distribution roof beam are installed on the upper portion of spandrel girder, the adjustable support piece of vertical length is installed respectively in the upper portion of first distribution roof beam and second distribution roof beam, install the transverse connection pole between the adjustable support piece of vertical length, slant adjustable support piece of length is installed in the lateral part of second distribution roof beam, the tripod is installed in the upper portion of spandrel girder, the lateral. The problem of among the prior art, easy unstability, economic nature are poor and limit web template support stability is poor when cantilever support receives great yawing force is solved to this application.
Description
Technical Field
The application relates to the technical field of bridge engineering construction, in particular to a cast-in-place box girder cantilever support.
Background
The cast-in-place box girder is a common design structure in engineering construction, the cast-in-place box girder is constructed by a full framing method commonly, upper load is transmitted to a ground foundation through the support bearing,
the typical cast-in-place beam section generally comprises a top plate, a bottom plate, a side web and a cantilever, the installation of the cantilever and a side web bracket is the key for the success of beam construction, the conventional method is to arrange the bracket under the projection of the cantilever and then use a strut perpendicular to the web to connect with the cantilever to form an integral stress system, and the process has the following defects:
1. the cantilever support is easy to be unstable under larger lateral stress to cause safety accidents;
2. the projected ground of the cantilever needs to be subjected to substrate replacement and filling treatment and concrete pouring, and the cantilever support is arranged at the bottom of the foundation and the bottom of the cantilever, so that material waste is caused, and the economical efficiency is poor.
3. The stability of the side web template is difficult to guarantee and is easy to deform or even collapse.
SUMMERY OF THE UTILITY MODEL
The main aim at of this application provides a cast-in-place box girder cantilever support to easy unstability, poor and the poor problem of side web template support stability when cantilever support receives great yawing force among the solution correlation technique.
In order to achieve the above object, in a first aspect, the present application provides a cast-in-place box girder cantilever support, comprising a support body, a load-bearing beam, a vertical length-adjustable support, an inclined length-adjustable support and a tripod, wherein the upper part of the bracket body is provided with a first jacking, the bearing beam is arranged on the upper part of the first jacking, a first distribution beam and a second distribution beam are arranged at the upper part of the bearing beam, the vertical length-adjustable supporting pieces are respectively arranged at the upper parts of the first distribution beam and the second distribution beam, a transverse connecting rod is arranged between the vertical length-adjustable supporting pieces, the oblique length-adjustable supporting pieces are arranged at the side parts of the second distribution beams, the tripod is mounted on the upper part of the load-bearing beam, and the side part of the tripod is connected with the side of the second distribution beam, which faces away from the first distribution beam.
The utility model discloses an in one embodiment, the support body includes a plurality of first montants, a plurality of horizontal pole and a plurality of bracing, the horizontal pole passes through right angle fastener and installs in adjacent two between the first montant, the bracing pass through rotatory fastener install in the horizontal pole with between the first montant.
In an embodiment of the present invention, the first supporting member includes a first threaded rod, a first hand wheel, and a first bearing block, the first threaded rod is threadedly mounted on the upper portion of the first vertical rod, the first hand wheel is mounted on the outer side of the first threaded rod, and the first bearing block is mounted on the upper portion of the first threaded rod.
In an embodiment of the present invention, the bearing beam, the first distribution beam and the second distribution beam are all configured as H-section steel.
In an embodiment of the present invention, a distance between the first distribution beam and the center of the bearing beam is smaller than a distance between the second distribution beam and the center of the bearing beam.
In an embodiment of the present invention, the vertical length-adjustable supporting member includes a second vertical rod, a second threaded rod, a second hand wheel and a second bearing block, the second threaded rod is threadedly installed on the upper portion of the second vertical rod, the second hand wheel is installed on the side portion of the second threaded rod, and the second bearing block is installed on the upper portion of the second threaded rod.
In an embodiment of the present invention, the transverse connecting rod is installed between the second vertical rods through a right-angled fastener.
In an embodiment of the present invention, the support member with adjustable slant length includes a slant rod, a third threaded rod, a third hand wheel and a third bearing block, the third threaded rod is threadedly installed on the end of the slant rod, the third hand wheel is installed on the side of the third threaded rod, and the third bearing block is installed on the end of the third threaded rod.
The utility model discloses an in the embodiment, first carrier block second carrier block and third carrier block all set up to the channel-section steel.
The utility model has the advantages that: the length of the bearing beam is set to be larger than the transverse total length of the box girder, the first distribution beam and the second distribution beam are arranged on the upper portion of the bearing beam, and the flange plate of the box girder can be supported by the vertical length adjustable supporting piece, so that the problem that a support is directly arranged on the ground projected by a cantilever between the conventional suspension beams is avoided, the hardening treatment on the ground of the projected part of the cantilever is further avoided, raw materials of a support body are saved, and the cantilever is convenient to construct and assemble;
through the lateral part installation slant length adjustable support piece at the second distribution roof beam, and increase the lateral force of second distribution roof beam through the tripod, utilize slant length adjustable support piece to support the lateral part of box girder edge web, realize the stable support of opposite side web, avoid the edge web to warp and collapse, increase the ability of bearing the lateral stress, reduced the too big probability that takes place the accident of lateral stress, it is whole more stable.
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 view of a prior art bracket body supporting a box girder;
FIG. 2 is a schematic structural diagram of a cantilever support of a cast-in-place box girder provided according to an embodiment of the application;
FIG. 3 is a schematic cross-sectional view of a first jacking portion according to an embodiment of the present application;
FIG. 4 is an enlarged schematic view at A of FIG. 1 provided in accordance with an embodiment of the present application;
FIG. 5 is a schematic cross-sectional view of a vertical length adjustable support provided in accordance with an embodiment of the present application;
fig. 6 is a schematic cross-sectional view of an adjustable diagonal length support according to an embodiment of the present application.
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
Please refer to fig. 1, which is a schematic diagram of a bracket body supporting a box girder in the prior art.
Referring to fig. 2-6, the present invention provides a technical solution: a cast-in-place box girder cantilever support comprises a support body 100, a bearing beam 200, a vertical length adjustable support 300, an oblique length adjustable support 400 and a tripod 500, wherein a first top support 110 is installed on the upper portion of the support body 100, the bearing beam 200 is installed on the upper portion of the first top support 110, a first distribution beam 210 and a second distribution beam 220 are installed on the upper portion of the bearing beam 200, the distance from the first distribution beam 210 to the center of the bearing beam 200 is smaller than the distance from the second distribution beam 220 to the center of the bearing beam 200, the vertical length adjustable support 300 is respectively installed on the upper portions of the first distribution beam 210 and the second distribution beam 220, a transverse connecting rod 600 is installed between the vertical length adjustable supports 300, the oblique length adjustable support 400 is installed on the side portion of the second distribution beam 220, the tripod 500 is installed on the upper portion of the bearing beam 200, the tripod 500 is formed by welding of cylindrical rods, the side portion of the tripod 500 is connected with, the load beam 200, the first distribution beam 210 and the second distribution beam 220 are all provided as H-section steel.
Referring to fig. 2, in the present embodiment, the bracket body 100 includes a plurality of first vertical bars 120, a plurality of cross bars 130 and a plurality of diagonal braces 140, the cross bars 130 are mounted between two adjacent first vertical bars 120 through right-angle fasteners, and the diagonal braces 140 are mounted between the cross bars 130 and the first vertical bars 120 through rotating fasteners.
Referring to fig. 2 and 3, in the present embodiment, the first jacking 110 includes a first threaded rod 111, a first hand wheel 112 and a first bearing block 113, the first threaded rod 111 is installed on the upper portion of the first vertical rod 120 in a threaded manner, the first hand wheel 112 is installed on the outer side of the first threaded rod 111, the first bearing block 113 is installed on the upper portion of the first threaded rod 111, the first bearing block 113 is a channel steel, and when in specific use, the first hand wheel 112 rotates the first threaded rod 111, so that the height of the first bearing block 113 can be adjusted.
Referring to fig. 2, 4 and 5, in the present embodiment, the vertical length-adjustable supporting member 300 includes a second vertical rod 310, a second threaded rod 320, a second hand wheel 330 and a second bearing block 340, the second threaded rod 320 is threadedly mounted on the upper portion of the second vertical rod 310, the second hand wheel 330 is mounted on the side portion of the second threaded rod 320, the second bearing block 340 is mounted on the upper portion of the second threaded rod 320, the second bearing block 340 is configured as a channel steel, and the transverse connecting rod 600 is mounted between the second vertical rods 310 through a right-angle fastener.
Referring to fig. 2, 4 and 6, in the present embodiment, the support 400 with adjustable slant length includes a slant rod 410, a third threaded rod 420, a third hand wheel 430 and a third bearing block 440, the third threaded rod 420 is threadedly mounted on an end of the slant rod 410, the third hand wheel 430 is mounted on a side of the third threaded rod 420, the third bearing block 440 is mounted on an end of the third threaded rod 420, and the third bearing block 440 is configured as a channel steel.
The utility model provides a cast-in-place box girder cantilever's mounting method in addition specifically includes following step:
s1: installing the support body 100 on the foundation after the treatment is finished, adjusting the elevation through the first jacking 110, installing a bearing beam 200 on the first jacking 110, wherein the bearing beam 200 needs to be transversely arranged relative to the box girder, and the length of the bearing beam 200 is greater than the transverse total length of the box girder;
s2: installing a first distribution beam 210 and a second distribution beam 220 on the upper part of the bearing beam 200, and installing a tripod 500 on the side part of the second distribution beam 220, wherein the first distribution beam 210 and the second distribution beam 220 are required to be within the projection range of the cantilever of the box girder;
s3: the length of adjustable support piece 300 of adjustment vertical length and the adjustable support piece 400 of slant length, then install the flange board square timber on adjustable support piece 300 of vertical length, install the side web square timber on adjustable support piece 400 of slant length, utilize flange board square timber and the common installation of side web square timber to support the mould at last, utilize to support the mould and can support the cantilever of case roof beam.
The structure principle is as follows: the length of the bearing beam 200 is set to be larger than the transverse total length of the box beam, the first distribution beam 210 and the second distribution beam 220 are arranged on the upper portion of the bearing beam 200, the flange plate of the box beam can be supported by the vertical length adjustable supporting piece 300, the problem that a support is directly arranged on the ground of cantilever projection between the existing suspension beams is avoided, hardening treatment on the ground of the cantilever projection position is further avoided, raw materials of the support body 100 are saved, and construction and assembly are facilitated; through installing slant length adjustable support 400 at the lateral part of second distribution beam 220, and increase the lateral force of second distribution beam 220 through tripod 500, utilize slant length adjustable support 400 to support the lateral part of box girder edge web, realize the stable support of opposite side web, avoid the deformation of edge web to collapse, increase the ability that bears the lateral stress, reduced the too big emergence accident of lateral stress's probability, whole more stable.
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 (9)
1. A cast-in-place box girder cantilever bracket is characterized by comprising
The support comprises a support body, wherein a first jacking is arranged at the upper part of the support body;
the bearing beam is arranged on the upper part of the first jacking, and a first distribution beam and a second distribution beam are arranged on the upper part of the bearing beam;
the vertical length adjustable supporting pieces are respectively installed on the upper parts of the first distribution beam and the second distribution beam, and a transverse connecting rod is installed between the vertical length adjustable supporting pieces;
an adjustable diagonal length support mounted to a side of the second distribution beam;
a tripod mounted to an upper portion of said spandrel beam, a side portion of said tripod being connected to a side of said second distribution beam facing away from said first distribution beam.
2. A cast-in-place box girder cantilever according to claim 1, wherein the support body comprises a plurality of first vertical rods, a plurality of cross rods and a plurality of diagonal braces, the cross rods are installed between two adjacent first vertical rods through right angle fasteners, and the diagonal braces are installed between the cross rods and the first vertical rods through rotating fasteners.
3. The cast-in-place box girder cantilever bracket of claim 2, wherein the first jacking comprises a first threaded rod, a first hand wheel and a first bearing block, the first threaded rod is threadedly mounted on the upper portion of the first vertical rod, the first hand wheel is mounted on the outer side of the first threaded rod, and the first bearing block is mounted on the upper portion of the first threaded rod.
4. A cast in situ box girder outrigger as claimed in claim 1, wherein the load bearing beam, the first distribution beam and the second distribution beam are all provided as H-section steel.
5. A cast in situ box beam outrigger as claimed in claim 1, wherein the distance of the first distribution beam from the center of the load beam is less than the distance of the second distribution beam from the center of the load beam.
6. A cast-in-place box girder cantilever according to claim 3, wherein the vertical length adjustable support member comprises a second vertical rod, a second threaded rod, a second hand wheel and a second bearing block, the second threaded rod is threadedly mounted on the upper portion of the second vertical rod, the second hand wheel is mounted on the side portion of the second threaded rod, and the second bearing block is mounted on the upper portion of the second threaded rod.
7. A cast-in-place box beam outrigger as claimed in claim 6, wherein the transverse connecting rod is mounted between the second vertical rods by right angle fasteners.
8. The cast-in-place box beam cantilever according to claim 6, wherein, the diagonal length adjustable support member comprises a diagonal rod, a third threaded rod, a third hand wheel and a third bearing block, the third threaded rod is threadedly mounted on the end of the diagonal rod, the third hand wheel is mounted on the side of the third threaded rod, and the third bearing block is mounted on the end of the third threaded rod.
9. A cast-in-place box beam outrigger of claim 8, wherein the first bearing block, the second bearing block and the third bearing block are all configured as channel steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020927746.8U CN212714580U (en) | 2020-05-27 | 2020-05-27 | Cast-in-place box girder cantilever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020927746.8U CN212714580U (en) | 2020-05-27 | 2020-05-27 | Cast-in-place box girder cantilever |
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| Publication Number | Publication Date |
|---|---|
| CN212714580U true CN212714580U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020927746.8U Active CN212714580U (en) | 2020-05-27 | 2020-05-27 | Cast-in-place box girder cantilever |
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| CN (1) | CN212714580U (en) |
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- 2020-05-27 CN CN202020927746.8U patent/CN212714580U/en active Active
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