CN214783194U - Mountain area superelevation is protected and is led to curve cast-in-place box girder sectional shelf-unit - Google Patents
Mountain area superelevation is protected and is led to curve cast-in-place box girder sectional shelf-unit Download PDFInfo
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- CN214783194U CN214783194U CN202022829541.9U CN202022829541U CN214783194U CN 214783194 U CN214783194 U CN 214783194U CN 202022829541 U CN202022829541 U CN 202022829541U CN 214783194 U CN214783194 U CN 214783194U
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Abstract
The application discloses curved cast-in-place case roof beam sectional shelf-unit is protected to mountain area superelevation leads to, mountain area superelevation protects to lead to curved cast-in-place case roof beam sectional shelf-unit includes: the device comprises upright post support assemblies fixedly arranged on the side faces of the piers, wherein the upright post support assemblies are perpendicular to tangent lines of curve sections between adjacent piers, Bailey beams are fixedly arranged at the upper ends of the upright post support assemblies vertically, distribution beams are fixedly arranged at the upper ends of the Bailey beams, and bowl buckle support assemblies are fixedly arranged at the upper ends of the distribution beams. The interval that lies in between the stand support of adjacent pier stud among the correlation technique of this application is isometric not, leads to installing the bailey roof beam on the stand support not long and short, can not utilize the bearing performance's of bailey roof beam problem completely.
Description
Technical Field
The application relates to the field of bridge construction, in particular to a mountain area ultrahigh fender curve cast-in-place box girder combined support.
Background
The cast-in-place beam is a common design form in bridge engineering and is mainly used for design of curve line shapes. Because the traditional disc buckle support requires the highest setting distance to be 24m according to the specification, a new support design form is required for setting the cast-in-place box girder support with the height exceeding 24m, and the normal traffic of vehicles is required to be ensured at the support according to the project traffic requirement. Chinese patent, CN110593110A discloses a box girder cast-in-place support suitable for curves and longitudinal and transverse slopes and a construction method thereof, and particularly discloses a box girder cast-in-place support suitable for curves and longitudinal and transverse slopes and a construction method thereof, wherein the box girder cast-in-place support comprises upright supports, bowl-buckle type full-space supports and other components, the upright supports are distributed along the extension curve of a bridge, the bowl-buckle type full-space supports comprise a plurality of unit supports, the unit supports are mutually lapped along the extension direction of the bridge, and the upper end and the lower end of each bowl-buckle type full-space support are respectively provided with an adjustable bracket for adjusting the height; the construction method comprises the following steps: s1: manufacturing a stand column bracket; s2: manufacturing a bowl buckle type full support; s3: manufacturing a ground surface supporting plate and connecting the soil-entering pipe piles; s4: burying the soil-entering pipe pile; s5: mounting a stand column bracket; s6: and (4) installing a pile top cross beam, a bailey truss and a distribution beam. S7: mounting a bowl buckle type full support; s8: mounting a top beam; s9: and (5) installing a base plate. Although the problem of support maintenance is solved in this patent, the interval that it is located between the stand support of adjacent pier stud is not isometric, therefore the bailey beam length of installing on the stand support is not the same, generally uses the bailey beam that satisfies the longest interval to install in unison to this condition, consequently to short interval part, the length overlength of bailey beam leads to can not utilize the bearing performance of bailey beam completely.
Aiming at the problems that in the prior art, the distance between upright post brackets positioned on adjacent piers is not equal, and for a short-distance part, the length of a Bailey beam is too long, so that the bearing performance of the Bailey beam cannot be completely utilized, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
The main aim of this application provides a mountain area superelevation is protected and is led to cast-in-place box girder sectional shelf-unit to the interval that is located between the stand support of adjacent pier stud among the solution correlation technique is not isometric, and to short interval part, the length overlength of bailey roof beam can not utilize the bearing capacity's of bailey roof beam problem completely.
In order to realize above-mentioned purpose, the application provides a curved cast-in-place box girder sectional shelf-unit is protected to mountain area superelevation, and mountain area superelevation is protected to curve cast-in-place box girder sectional shelf-unit includes: the device comprises upright post support assemblies fixedly arranged on the side faces of the piers, wherein the upright post support assemblies are perpendicular to tangent lines of curve sections between adjacent piers, Bailey beams are fixedly arranged at the upper ends of the upright post support assemblies vertically, distribution beams are fixedly arranged at the upper ends of the Bailey beams, and bowl buckle support assemblies are fixedly arranged at the upper ends of the distribution beams.
Further, the stand support assembly is perpendicular to a tangent line at the midpoint of the curve segment between adjacent piers.
Furthermore, the stand support component comprises a plurality of steel pipe stand columns fixedly arranged on the side faces of the pier columns and first bearing beams fixedly arranged at the upper ends of the steel pipe stand columns, the first bearing beams are perpendicular to the tangent line of the middle point of the curve section between the adjacent pier columns, and the Bailey beams are vertically and fixedly arranged on the first bearing beams.
Furthermore, the lower end of the steel pipe upright post is fixedly arranged on a bearing platform of the pier stud.
Furthermore, the stand support assemblies positioned on two sides of the pier stud are fixedly connected through a second bearing beam.
Furthermore, the second bearing beam is fixedly connected with the first bearing beam through a third bearing beam which is obliquely arranged.
Further, transversely be provided with the locating part between steel pipe stand and the adjacent pier stud, the first end of locating part with steel pipe stand fixed connection, the second end is contradicted with the pier stud and is connected.
Furthermore, the upper end of the steel pipe upright post is welded with a limiting steel bar, and the first bearing beam is welded with the limiting steel bar.
Further, the bowl is detained the bracket component and is detained the scaffold including the bowl, the back-off channel-section steel on the scaffold is detained to the bowl, square timber has been laid to the upper end of channel-section steel, bamboo offset plate has been laid to square timber upper end to form the bowl form face.
Furthermore, the distance between the steel pipe columns is 270cm, and the steel pipe columns are provided with anchor ears, channel steel parallel connection and diagonal bracing welding connection.
According to another aspect of the application, a method for erecting a mountain area ultrahigh traffic curve cast-in-place box girder combined support is provided, which comprises the following steps:
acquiring a curve section of a box girder between adjacent pier columns, and acquiring a tangent line of the curve section;
erecting upright post bracket assemblies perpendicular to the tangent lines at two ends of the tangent lines;
a Bailey beam is erected on the upright post bracket assembly and is perpendicular to the upright post bracket assembly;
and erecting a distribution beam on the Bailey beam, and erecting a bowl buckle support assembly on the distribution beam.
Further, the tangent line is a tangent line taking the midpoint of the curve segment as a tangent point.
In the embodiment of the application, through the upright post bracket component fixedly arranged on the side surface of the pier stud, the upright post bracket component is vertical to the tangent line of the curve section between the adjacent pier studs, a Bailey beam is vertically and fixedly arranged at the upper end of the upright post bracket component, a distribution beam is fixedly arranged at the upper end of the Bailey beam, a bowl buckle bracket component is fixedly arranged at the upper end of the distribution beam, the positions of the upright post bracket assemblies can be determined according to the linearity of the curve section between the adjacent piers, so that the two upright post bracket assemblies of the adjacent piers are at equal intervals, multiple groups of Bailey beams with the same length can be arranged on the upright post bracket component, thereby realizing the technical effect of fully utilizing the bearing capacity of the Bailey beams, thereby solving the problems that the space between the upright post brackets of adjacent pier studs is not equal in the related technology, and for the short-distance part, the length of the Bailey beam is too long, so that the bearing performance of the Bailey beam cannot be fully utilized.
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 diagram of a top view configuration according to an embodiment of the present application;
FIG. 2 is another schematic top view of an embodiment according to the present application;
FIG. 3 is a schematic side view of an embodiment according to the present application;
FIG. 4 is a schematic front view of an embodiment according to the present application;
the bearing platform comprises a bearing platform 1, a column support assembly 2, a steel pipe column 21, a first bearing beam 22, a pier column 3, a third bearing beam 4, a second bearing beam 5, a distribution beam 6, a Bailey beam 7, a bowl-buckled scaffold 9, an inverted U-steel 10, a bamboo plywood 11 and a square timber 12.
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.
In this application, the terms "upper", "lower", "inside", 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.
Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can 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.
As shown in fig. 1 to 4, an embodiment of the present application provides a cast-in-place box girder composite support with an ultrahigh fender curve in a mountainous area, where the cast-in-place box girder composite support with the ultrahigh fender curve in the mountainous area includes: the vertical column support assembly 2 is fixedly arranged on the side face of each pier column 3, the vertical column support assembly 2 is perpendicular to a tangent line of a curve section between every two adjacent pier columns 3, a Bailey beam 7 is fixedly arranged at the upper end of the vertical column support assembly 2, a distribution beam 6 is fixedly arranged at the upper end of the Bailey beam 7, and a bowl buckle support assembly (not shown in figure 1) is fixedly arranged at the upper end of the distribution beam 6.
As shown in fig. 1 to 4, the upright support assembly 2 is perpendicular to a tangent line at a midpoint of a curved section between adjacent pillars 3, so that the entire support structure is more stable.
As shown in fig. 1 to 4, the column support assembly 2 includes a plurality of steel tube columns 21 fixed on the side surfaces of the piers 3 and a first bearing beam 22 fixed on the upper ends of the steel tube columns 21, the first bearing beam 22 is perpendicular to the tangent line of the midpoint of the curve segment between adjacent piers 3, and the beret beam 7 is perpendicularly fixed on the first bearing beam 22. The upright post bracket assemblies 2 positioned at two sides of the pier stud 3 are fixedly connected through a second bearing beam 5, and the second bearing beam 5 is fixedly connected with the first bearing beam 22 through a third bearing beam 4 which is obliquely arranged, so that the upright post bracket assemblies 2 at two sides of the pier stud 3 are connected into a whole.
The lower end of the steel pipe upright post 21 is fixedly arranged on the bearing platform 1 of the pier stud 3, the advantage of designing the bearing platform 1 is fully utilized, the steel pipe upright post 21 is arranged on the top surface of the existing bearing platform 1, the stress bearing capacity and the economy are improved, and the space for erecting a support is saved. The steel tube upright posts 21 are made of phi 609 multiplied by 16mm steel tubes, 5 steel tubes are arranged in a row at a distance of 270cm, the steel tube upright posts 21 are made of standard sizing sections made by professional manufacturers, the maximum section is 6m, and flanges are arranged at two ends of the steel tube upright posts. The steel pipe pile is provided with a hoop which is connected with a [20a channel steel parallel connection and an inclined strut in a welding way. The parallel connection form adopts a zigzag shape, and a simple platform is erected on the parallel connection to serve as an operation platform for lengthening the steel pipe upright post 21.
The first bearing beam 22 and the second bearing beam 5 both adopt double-limb I36a I-steel as bearing cross beams. The Bailey beams 7 are double-row single-layer non-reinforced Bailey beams 7, the distance between the two Bailey beams 7 at the outer side is 45cm, and the distance between the Bailey beams 7 in the middle group is 90 cm. The transverse connection of the Bailey beams 7 is respectively fixed by 45 and 90 flower stands, so that transverse instability is prevented. The center distance between the two groups of the Bailey beams 7 is 180cm, and the two adjacent groups of the Bailey beams 7 are bolted through L10 angle steel scissor supports, so that the overall structure stability of the Bailey beams 7 is ensured.
The distribution beams 6 are I14I-shaped steel, the distance between the middle cross beams is 4 multiplied by 60cm, the distance between the other positions is 90cm, and the distance between the distribution beams 6 at the transition section at the top of the pier stud 3 is 60cm due to the large arc of the ramp bridge.
As shown in fig. 1 to 4, a limiting member is transversely disposed between the steel tube column 21 and the adjacent pier column 3, a first end of the limiting member is fixedly connected to the steel tube column 21, and a second end of the limiting member is connected to the pier column 3 in an abutting manner. The limiting piece is used for connecting the steel tube upright post 21 and the pier stud 3, so that the lateral force is borne, and the stability of the support is improved. Spacing reinforcing bar, first spandrel girder 22 and spacing reinforcing bar welding improve first spandrel girder 22's structural stability in the welding of steel pipe stand 21 upper end.
As shown in fig. 1 to 4, the bowl buckle bracket assembly includes a bowl buckle type scaffold 9, a reverse channel steel 10 is arranged on the bowl buckle type scaffold 9, a square timber 12 is laid on the upper end of the channel steel, a bamboo plywood 11 is laid on the upper end of the square timber 12, and a bowl-shaped surface is formed.
The bowl-fastener type scaffold 9 comprises steel pipes: specification of steel pipe
Is supported on an I14I-shaped steel distribution beam 6. Longitudinal spacing: the middle transverse partition beam of the box girder span is arranged in a dense mode, the distance is 60cm, and the rest is 90 cm. Transverse spacing: is 90cm, indulges under the mound side case roof beam flange board, transverse spacing is 60cm to and the horizontal pole: follow supreme every 120cm from down and set up one, sweep the floor the pole: pole setting bottom is indulged and is transversely set up steel pipe fastener formula and sweep ground pole, bracing: 5 groups of cross braces are arranged on the vertical rods in a single longitudinal row, one row is arranged every 4 rows, 5 rows are provided in total, wherein the included angle between the diagonal brace of the middle diaphragm beam encryption section in the box girder span and the horizontal direction is 40 degrees, and the included angle between the diagonal brace and the other parts is 48 degrees; 3 groups of the cross braces are arranged on the transverse single-row upright rods, and 7 rows are arranged in each 3 rows.
The top support of the bottom die bowl buckle support is longitudinally provided with an inverted buckle [10 channel steel, square timbers 12 with the length of 10 multiplied by 10cm are transversely paved on the upper part of the bottom die bowl buckle support at the interval of 30cm, and then a bamboo plywood 11 with the thickness of 1.5cm is paved to form a template system. In order to prevent slurry leakage, a double-sided adhesive tape with the thickness of 5 mm is pasted between seams of the template. The reverse buckle [10 channel steel is provided with a clamping steel bar to fix the position of the square timber 12.
In order to control the line type of the cast-in-place box girder, the wing plate template and the side mould are manufactured by longitudinally and transversely arranging double layers of square wood 12 of 10 multiplied by 10cm and processing a bamboo plywood 11 with the thickness of 1.5cm, a bowl-buckled scaffold 9 is adopted below the square wood 12 for supporting, and scaffold steel pipes are supported on an I14 distribution girder 6.
According to another aspect of the application, a method for erecting a mountain area ultrahigh traffic curve cast-in-place box girder combined support is provided, which comprises the following steps:
acquiring a curve section of the box girder between the adjacent pier studs 3, and acquiring a tangent of the curve section, wherein the tangent is a tangent taking the midpoint of the curve section as a tangent point;
erecting upright post bracket assemblies 2 vertical to the tangent lines at two ends of the tangent lines;
a Bailey beam 7 is erected on the upright post bracket assembly 2, and the Bailey beam 7 is vertical to the upright post bracket assembly 2;
a distribution beam 6 is arranged on the Bailey beam 7, and a bowl buckle support assembly is arranged on the distribution beam 6.
In the process of erecting the upright post bracket component 2, the steel pipe upright posts 21 are installed firstly, the steel pipe upright posts 21 are formed by splicing phi 609 multiplied by 16mm standard steel pipe sections, and two ends of each steel pipe section are provided with flanges. The lengths of the segments are 1m, 3m and 6m, and the segments are matched according to the height of the pier stud 3. The flange plate at the bottom of the steel pipe section and the concrete expanding foundation are adopted
The expansion bolts are connected, and the bolts are anchored into the foundation by not less than 20 cm.
The steel pipe joints are connected by adopting flange plates, the thickness of the welding seams of the flange plates is not less than that of the base metal, 16 stiffening plates with the size of 70mm multiplied by 200mm are arranged at the joints of the steel pipes at equal intervals for strengthening, and the flange plates are connected by adopting 16 10.9-grade M20 high-strength bolts. After the steel pipe upright posts 21 are installed, the elevation of the top of the post is measured accurately, and the heights of the tops of the steel pipes in the same connection are consistent. The deviation of the plane position of the steel pipe is controlled within 3cm, and the verticality is controlled within 1 percent.
After the construction of the steel tube upright posts 21 is finished, the construction of the hoops, the flat connection and the pile top bearing beams among the steel tube upright posts 21 is immediately carried out. The steel pipe upright posts 21 are connected with each other by adopting a tower crane and a truck crane to be matched with a [20a channel steel horizontal connection mode and an anchor ear installed on the steel pipe upright posts 21 in a welding mode. Firstly, the measurement lofting of the position of the hoop and the parallel connection are carried out on the steel tube upright post 21. And (3) a technician actually measures the parallel connection length between piles, discharges materials in a back field, and synchronously carries out hoop installation and processing of an inclined strut and a pile top bearing beam.
The parallel connection and the inclined strut are suspended by a truck crane, and after the parallel connection and the inclined strut are in place, an electric welder welds the parallel connection and the inclined strut. And field technicians check the quality of the welding seam in time and erect the bearing beam after the welding seam is qualified. And (3) mounting the truck crane after suspending the bearing beam to a measurement lofting position, mounting a bearing beam limiting device on a flange plate at the top of the steel pipe upright post 21 by a worker, and welding the bearing beam with the limiting device.
And then the Bailey beams 7 are installed and limited, and all parts of the Bailey beams 7 are transported to the bridge site by a transport vehicle and are assembled on site. The Bailey pieces are spliced according to groups, one Bailey piece is spliced every time, and the Bailey pieces are connected through a support frame.
A group of 12 m-span double-row Bailey beams 7 weigh about 2.2t and are arranged on a bearing cross beam by adopting an automobile hanger. The bailey beam 7 is at 90 ° to the load bearing beam. And (4) carrying out measurement lofting on the 2I36a bearing beam to determine the accurate position of the Bailey truss. And meanwhile, arranging a rubber gasket, and then hoisting the Bailey beam 7 in place. The Bailey beam 7 limiting device is formed by welding [10 channel steel.
And then laying the distribution beams 6, and installing the I10 distribution beams 6 by adopting a tower crane and a truck crane, wherein the arrangement distance of the I10 cross beams is 120 cm. After the distribution beam 6 is completely laid, the distribution beam is longitudinally used at the top of the distribution beam 6 in the hole of the upper coil buckle bracket upright rod
The reinforcing bar carries out welded fastening, and evenly arrange 5, prevent that I10 distributive girder 6 from taking place to topple, carries out the setting up of bowl knot bracket component again at last.
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 curved cast-in-place case roof beam sectional shelf-unit that leads to is protected to mountain area superelevation which characterized in that includes: the device comprises upright post support assemblies fixedly arranged on the side faces of the piers, wherein the upright post support assemblies are perpendicular to tangent lines of curve sections between adjacent piers, Bailey beams are fixedly arranged at the upper ends of the upright post support assemblies vertically, distribution beams are fixedly arranged at the upper ends of the Bailey beams, and bowl buckle support assemblies are fixedly arranged at the upper ends of the distribution beams.
2. The mountain area ultrahigh-protection-through-curve cast-in-place box girder composite bracket as claimed in claim 1, wherein the upright post bracket assembly is perpendicular to a tangent line of a midpoint of a curve section between adjacent piers.
3. The mountain area ultrahigh-protection-curve cast-in-place box girder composite bracket as claimed in claim 2, wherein the column bracket assembly comprises a plurality of steel pipe columns fixedly arranged on the side surfaces of the pier columns and a first bearing beam fixedly arranged at the upper ends of the steel pipe columns, the first bearing beam is perpendicular to a tangent line of a midpoint of a curve section between adjacent pier columns, and the Bailey beam is vertically and fixedly arranged on the first bearing beam.
4. The mountain area ultrahigh traffic curve cast-in-place box girder combined bracket as claimed in claim 3, wherein the lower end of the steel pipe upright is fixedly arranged on a bearing platform of a pier.
5. The mountain area ultrahigh-pass-protection curve cast-in-place box girder combined support is characterized in that the upright post support assemblies positioned on two sides of the pier are fixedly connected through the second bearing beam.
6. The mountain area ultrahigh-protection-curve cast-in-place box girder composite bracket as claimed in claim 5, wherein the second bearing beam is fixedly connected with the first bearing beam through a third bearing beam which is obliquely arranged.
7. The cast-in-place box girder composite bracket with an ultrahigh keep-alive curve in the mountainous area as claimed in claim 3, wherein a limiting member is transversely arranged between the steel pipe upright and the adjacent pier stud, a first end of the limiting member is fixedly connected with the steel pipe upright, and a second end of the limiting member is connected with the pier stud in an abutting manner.
8. The mountain area ultrahigh-protection-curve cast-in-place box girder combined bracket as claimed in claim 1, wherein the bowl buckle bracket assembly comprises a bowl buckle type scaffold, a channel steel is reversely buckled on the bowl buckle type scaffold, a square timber is laid at the upper end of the channel steel, a bamboo plywood is laid at the upper end of the square timber, and a bowl-shaped surface is formed.
9. The mountain area ultrahigh traffic curve cast-in-place box girder composite bracket as claimed in claim 3, wherein limiting steel bars are welded to the upper ends of the steel pipe columns, and the first bearing beam is welded to the limiting steel bars.
10. The mountain area ultrahigh traffic-guaranteeing curve cast-in-place box girder composite bracket as claimed in claim 9, wherein the distance between the steel pipe columns is 270cm, and the steel pipe columns are provided with hoops, channel steel parallel connection and diagonal braces for welding connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022829541.9U CN214783194U (en) | 2020-11-30 | 2020-11-30 | Mountain area superelevation is protected and is led to curve cast-in-place box girder sectional shelf-unit |
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| CN202022829541.9U CN214783194U (en) | 2020-11-30 | 2020-11-30 | Mountain area superelevation is protected and is led to curve cast-in-place box girder sectional shelf-unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112411343A (en) * | 2020-11-30 | 2021-02-26 | 中交路桥建设有限公司 | Mountain area ultrahigh traffic-guaranteeing curve cast-in-place box girder combined support and erection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411343A (en) * | 2020-11-30 | 2021-02-26 | 中交路桥建设有限公司 | Mountain area ultrahigh traffic-guaranteeing curve cast-in-place box girder combined support and erection method |
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