CN218322308U - Primary and secondary beam frame structure for wide-range bridge - Google Patents
Primary and secondary beam frame structure for wide-range bridge Download PDFInfo
- Publication number
- CN218322308U CN218322308U CN202221761392.XU CN202221761392U CN218322308U CN 218322308 U CN218322308 U CN 218322308U CN 202221761392 U CN202221761392 U CN 202221761392U CN 218322308 U CN218322308 U CN 218322308U
- Authority
- CN
- China
- Prior art keywords
- main beam
- steel
- box
- girder
- box girder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The application discloses primary and secondary girder frame structure for widening bridge by a wide margin includes: the anti-corrosion sealing device comprises a main beam structure, a plurality of I-steel cross beams, a plurality of I-steel outriggers and an anti-corrosion sealing assembly, wherein the I-steel cross beams, the I-steel outriggers and the anti-corrosion sealing assembly are welded on the main beam structure; the girder structure includes: the box girder is connected end to form a triangle, and the box girder is arranged on the longitudinal and transverse central axes of the enclosed triangle respectively. The bridge is mainly composed of a box girder, I-steel cross beams, I-steel outriggers, channel steel small longitudinal beams and angle steel inclined struts, wherein the box girder is divided into a plurality of sections according to transportation and hoisting capacity, the sections are spliced into an integral frame after being hoisted on site, the I-steel cross beams, the I-steel outriggers, the channel steel small longitudinal beams and the angle steel inclined struts are sequentially installed after the box girder is installed, and the bridge with the required width change can be obtained as required without increasing the width of a box room and the width of a cantilever. The structure has good overall economy, convenient transportation and construction and reliable quality.
Description
Technical Field
The application relates to the technical field of bridge engineering, in particular to a primary and secondary beam frame structure for a wide-amplitude bridge.
Background
The bridge is divided into a concrete structure bridge and a steel structure bridge, generally, the steel structure bridge has stronger adaptability to widening, and the bridge with a larger widening range generally adopts a steel box girder, and the widening is realized by adjusting the number of box chambers, the width of the box chambers and the width of a cantilever, as shown in fig. 1 to 2.
For example, when the bridge width of a 25m span steel box girder needs to be increased from 6m to 18m, the prior art mainly adjusts the number of box chambers and/or the width of the box chambers to increase 6 to 7m, and adjusts the cantilever width to increase 5 to 6m, so as to achieve the purpose of increasing 12m in total. The width increasing method shown in fig. 1 to 2 is to increase the number of single rows of boxes from two ends of the bridge to the center, and simultaneously increase the width of each row of boxes, thereby achieving the purpose of widening.
The broadening mode causes large steel consumption and poor economy; the requirements on transportation and hoisting are high. For example, CN202011188662.8 discloses a beam transporting vehicle, a beam transporting system, a steel box girder assembling system and a steel box girder assembling method in the prior art, the beam transporting device can be used for transporting steel box girders, but the device has a complex structure, high cost and large investment.
The photo of the construction site of the existing steel box girder is shown in fig. 2, and the existing steel box girder has a plurality of problems when being used for a bridge with a large width: the steel box girder is assembled and welded on site after being split and hoisted in sections, most welding work needs to be finished inside a closed box chamber, the operation space inside the box body is narrow, and the welding difficulty is high; especially when the height of steel box girder is only about 1m, operating personnel operates in this environment for a long time, is difficult to guarantee whole journey welding quality, and the welding cycle is long, and the efficiency of construction is lower.
SUMMERY OF THE UTILITY MODEL
The application provides a primary and secondary beam frame structure for a bridge with a large width, which is used for solving the problems of large steel consumption and poor economy existing in the prior art; the requirements on transportation and hoisting are high; the on-site welding workload is large, the welding operation space is narrow, the welding period is long, the welding quality is difficult to guarantee, the on-site splicing difficulty is large, and the construction efficiency is low.
The application provides a primary and secondary girder frame structure for widening bridge by a wide margin includes: the structure comprises a main beam structure, a plurality of I-shaped steel cross beams and a plurality of I-shaped steel outriggers, wherein the I-shaped steel cross beams and the I-shaped steel outriggers are connected with the main beam structure;
the girder structure includes: the box type main beams are connected end to form a triangle, and the box type main beams are respectively arranged on the longitudinal and transverse central axes of the enclosed triangle;
a plurality of I-shaped steel cross beams are arranged in the main beam structure at intervals along the transverse direction of the main beam structure;
a plurality of I-shaped steel outriggers are arranged at the outer sides of two bevel edges of the main beam structure;
a channel steel small longitudinal beam and an angle steel inclined strut are arranged between any two adjacent I-shaped steel cross beams;
an angle steel inclined strut is arranged between any two adjacent I-shaped steel cantilever beams;
the box-type main beam is formed by welding and assembling a plurality of box-type main beam steel plates, a plurality of box-type main beam stiffening ribs, a plurality of box-type main beam diaphragm plates and a plurality of box-type main beam diaphragm stiffening ribs;
a plurality of box type main beam steel plates surround a rectangular box body; the box-type girder stiffening ribs are arranged on the inner side walls of the steel plates of the box-type girders; the box girder diaphragm plates are arranged in the rectangular box body at intervals and are respectively connected with the inner side walls of the steel plates of opposite side box girder; the box girder diaphragm stiffening rib sets up in each box girder diaphragm hole inboard.
Preferably, the method comprises the following steps: a plurality of box girder stiffeners; box girder stiffening ribs are arranged in the middle of each inner side wall of the box girder steel plate along a transverse central shaft of the box girder; the box girder stiffening ribs are inserted into mounting grooves formed in the periphery of the diaphragm plate of the box girder and are welded.
Preferably, the box girder comprises: the first main beam, the second main beam, the third main beam, the fourth main beam and the fifth main beam; the first main beam, the second main beam and the fifth main beam are connected end to end and form a triangle; the first end of the third main beam is connected with the midpoint of the second main beam; the second end of the third main beam is connected with the midpoint of the fifth main beam; the first end of the fourth main beam is connected with the midpoint of the first main beam; and the second end of the fourth main beam is connected with the joint of the second main beam and the fifth main beam.
Preferably, two ends of the I-shaped steel cross beam respectively abut against opposite side walls of the first main beam and the third main beam and are arranged at intervals.
Preferably, the I-steel outriggers are arranged on the outer side walls of the second main beam and the fifth main beam at intervals;
the small channel steel longitudinal beam is parallel to the first main beam, and two ends of the small channel steel longitudinal beam are respectively connected with the middle points of any two adjacent I-shaped steel cross beams.
Preferably, the first end of the angle steel inclined strut is connected with the intersection point of the first main beam and the I-shaped steel cross beam; and the second end of the angle steel inclined strut is connected with the intersection point of the third main beam and the I-shaped steel cross beam.
Preferably, the angle steel inclined strut is arranged on the outer side of the third main beam; the first end of the angle steel inclined strut is connected with the extending end of the I-shaped steel cantilever beam; the first end of the angle steel diagonal brace is connected with the connecting points of the I-shaped steel cantilever beam and the second main beam.
Preferably, the angle steel inclined strut is arranged on the outer side of the third main beam; the first end of the angle steel inclined strut is connected with the extending end of the I-shaped steel cantilever beam; the first end of the angle steel inclined strut is connected with the connecting point of the I-shaped steel cantilever beam and the fifth main beam.
Preferably, two ends of the I-shaped steel cross beam are respectively connected with opposite side walls of the third main beam and the second main beam.
The beneficial effect that this application can produce includes:
1) The utility model provides a primary and secondary girder frame construction for widening bridge by a wide margin, mainly by the box girder, the I-steel crossbeam, the I-steel outrigger, channel-section steel stringer and angle steel bracing are constituteed, the box girder divide into a plurality of sections according to transportation and hoist and mount ability, splice into whole frame after the on-the-spot hoist and mount, the I-steel crossbeam is installed in proper order after the installation of box girder is accomplished, the I-steel outrigger, channel-section steel stringer, the angle steel bracing, need not to increase the bridge that box room width and cantilever width can obtain required width as required. The structure has good overall economy, convenient transportation and construction and reliable quality.
2) The application provides a primary and secondary beam frame construction for widening bridge by a wide margin, this structure uses the box girder to enclose for the girder and establishes into triangle-shaped after, carry out the welding of parts such as I-steel crossbeam, the I-steel outrigger, the little longeron of channel-section steel, angle steel bracing in the girder encloses the region, there is not the inside welded condition of closed box room, the welding operation space is great, be convenient for operate, and the welding back is through detecting, each welding seam grade, the quality all satisfies standard requirement, whole bridge mechanical strength reaches the requirement of current steel box girder.
Drawings
FIG. 1 is a schematic structural diagram of a steel box girder in a front view in the prior art;
FIG. 2 is a schematic plan view of the overall frame structure of the primary and secondary beams for a substantially wider bridge as provided herein;
FIG. 3 is a schematic plan view of a main beam frame structure provided herein;
FIG. 4 is a schematic sectional view of the box girder provided by the present application;
FIG. 5 is a schematic structural view of a sealing structure of the box girder provided by the present application;
fig. 6 is a schematic elevation structure view of a sealing structure of the box girder provided in the present application;
fig. 7 is a schematic cross-sectional structure view of an i-steel cross beam, an i-steel outrigger, and a channel steel small longitudinal beam provided by the present application, wherein a is the i-steel cross beam or the i-steel outrigger; b is a small channel steel longitudinal beam;
fig. 8 is a schematic cross-sectional view of the box-type main beam provided by the present application;
illustration of the drawings:
10. a box girder; 11. an I-beam cross beam; 12. h-shaped steel cantilever beams; 13. a small channel steel longitudinal beam; 14. angle steel diagonal bracing; 30. a box girder steel plate; 31. box-type main beam stiffening ribs; 32. a box-type main beam diaphragm plate; 33. stiffening ribs for transverse partition plates of box-shaped main beams; 34. a box-type main beam sealing cover plate; 50. a box girder annular reinforced steel plate; 51. a box-type main beam sealing gasket; 52. a box-type main beam sealing cover plate handle; 53. box-type main beam sealing cover plate bolts; 111. a first main beam; 112. a second main beam; 113. a third main beam; 114. a fourth main beam; 115. and a fifth main beam.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The technical features that are not used for solving the technical problems of the present application are all arranged or installed according to the common methods in the prior art, and will not be described herein.
Referring to fig. 2 to 8, the primary and secondary beam frame structure for a bridge with a large width provided by the present application includes: the structure of the main beam comprises a main beam structure, a plurality of I-shaped steel cross beams 11 and a plurality of I-shaped steel outriggers 12, wherein the I-shaped steel cross beams and the I-shaped steel outriggers are welded on the main beam structure;
the girder structure includes: the multi-section box-type main beams 10 are connected end to form a triangle, and the box-type main beams 10 are respectively arranged on the longitudinal and transverse central axes of the enclosed triangle;
a plurality of I-shaped steel cross beams 11 are arranged in the main beam structure at intervals along the transverse direction of the main beam structure;
a plurality of I-steel outriggers 12 are arranged outside two bevel edges of the main beam structure;
a small channel steel longitudinal beam 13 and an angle steel inclined strut 14 are arranged between any two adjacent I-shaped steel cross beams 11;
an angle steel inclined strut 14 is arranged between any two adjacent I-shaped steel cantilever beams 12;
the box-type main beam 10 is formed by welding and assembling a plurality of box-type main beam steel plates 30, a plurality of box-type main beam stiffening ribs 31, a plurality of box-type main beam diaphragm plates 32 and a plurality of box-type main beam diaphragm plate stiffening ribs 33;
a plurality of box-type main beam steel plates 30 are enclosed into a rectangular box body; box girder stiffening ribs 31 are arranged on the inner side walls of the box girder steel plates 30; the box girder diaphragm plates 32 are arranged in the rectangular box body at intervals and are respectively connected with the inner side walls of the opposite side box girder steel plates 30; box girder diaphragm stiffening ribs 33 are disposed inside the holes of each box girder diaphragm 32.
The utility model provides a structure uses box girder structure as major structure, and used girder structure size need not to change, only needs to change the change that girder structure interior angle degree can satisfy bridge width, the standardized processing preparation of box girder of being convenient for, and the box girder adopts the bolt concatenation after the segmentation fortune is to on-the-spot hoist and mount after mill's processing, can effectively reduce on-the-spot welding work load, and the degree of difficulty is reduced in the assembly transportation, and the equipment concatenation degree of difficulty reduces. After the box girder is spliced, all members connected with the box girder are welded with the box girder, and an operator can stand in the area enclosed by the girder structure to normally stand for welding, so that the welding quality can be effectively ensured, and the overall mechanical performance of the structure can be improved.
And (3) calculating the inner vertex angle of the triangle by taking the width of the bridge deck as the flat side of the triangle surrounded by the box-type main beams 10, adjusting the included angle degrees of the second main beam 112 and the fifth main beam 115 according to the inner vertex angle degrees, and adaptively adjusting the lengths of the second main beam 112 and the fifth main beam 115, thereby realizing the effective support of the widened bridge deck. The utility model provides a structure only needs to change girder structure interior angle degree and box girder 10's hypotenuse length can satisfy the change of bridge width, can realize adjusting according to the bridge floor width.
Preferably, the method comprises the following steps: an anti-corrosion seal assembly; a manhole is arranged on the box-type main beam diaphragm 32; anticorrosive seal assembly sets up respectively on the tip manhole of box girder 10 to dismantle with the tip manhole of box girder 10 and connect anticorrosive seal assembly and include: a box girder annular reinforcing steel plate 50, a box girder sealing washer 51, a box girder sealing cover plate handle 52, a box girder sealing cover plate bolt 53 and a box girder sealing cover plate 34; box girder sealing cover plates 34 are respectively arranged at two ends of the box girder 10; a box girder seal cover 34 is installed on the manhole of the box girder diaphragm 32.
Preferably, the box girder annular reinforced steel plate 50 is welded on the outer side wall of the manhole of the box girder diaphragm 32 at the end part; a box girder sealing washer 51 is arranged on the outer side wall of the box girder annular reinforced steel plate 50; the outer side wall of the box type girder sealing washer 51 is provided with a box type girder sealing cover plate 34, and the box type girder sealing cover plate 34 is detachably connected with the box type girder diaphragm 32.
The setting of sealed apron can make the box girder inside completely cut off with the outside air, can prevent effectively that the box girder is inside to be corroded, avoids later stage operation in-process to carry out the maintenance in narrow and small incasement portion.
Preferably, the method comprises the following steps: a plurality of box-type main beam stiffeners 31; box girder stiffening ribs 31 are arranged in the middle of each inner side wall of the box girder steel plate 30 along the transverse central axis of the box girder 10; the box-type girder stiffening ribs 31 are inserted into mounting grooves formed on the periphery of the box-type girder diaphragm 32 and are welded.
According to the arrangement, the overall stress strength of the box girder 10 can be enhanced by utilizing the structure of the box girder diaphragm 32 and the box girder stiffening ribs 31, and a primary girder frame structure and a secondary girder frame structure meeting the mechanical property requirements can be obtained under the condition of not increasing the width of the box girder frame structure.
In a specific embodiment, the i-steel cross beam 11 and the i-steel cantilever beam 12 are in an i-steel structure; the preferred dimensions are wing width 360mm, wing thickness 16mm, web height 1144mm, web thickness 12mm; the small channel steel longitudinal beam 13 is of a channel steel structure; preferably 28 channel steel in size;
preferably, the box girder 10 comprises: a first main beam 111, a second main beam 112, a third main beam 113, a fourth main beam 114, a fifth main beam 115; the first main beam 111, the second main beam 112 and the fifth main beam 115 are connected end to end and enclose a triangle; a first end of the third main beam 113 is connected to a midpoint of the second main beam 112; the second end of the third main beam 113 is connected to the midpoint of the fifth main beam 115; the first end of the fourth main beam 114 is connected with the midpoint of the first main beam 111; the second end of the fourth main beam 114 is connected to the point of connection of the second and fifth main beams 112, 115.
Adopt above-mentioned girder connected mode, can utilize fourth girder 114, the third girder 113 to strengthen the bulk strength of enclosing the triangle girder, provide reliable support for the triangle-shaped behind the grow contained angle simultaneously.
Preferably, two ends of the i-steel beam 11 abut against opposite sidewalls of the first main beam 111 and the third main beam 113, respectively, and are spaced apart from each other.
Preferably, the i-steel outriggers 12 are arranged on the outer side walls of the second main beam 112 and the fifth main beam 115 at intervals.
Preferably, the small channel steel longitudinal beam 13 is parallel to the first main beam 111, and two ends of the small channel steel longitudinal beam 13 are respectively connected to midpoints of any two adjacent i-shaped steel cross beams 11.
Preferably, the first end of the angle steel inclined strut 14 is connected with the intersection point of the first main beam 111 and the i-steel cross beam 11; and the second end of the angle steel inclined strut 14 is connected with the intersection point of the third main beam 113 and the I-shaped steel cross beam 11. The whole stability of the frame structure can be enhanced according to the arrangement.
Preferably, the angle braces 14 are arranged at intervals. In this arrangement, the first end of an angle brace 14 is arranged for a free space.
In one embodiment, the angle brace 14 includes: the first I-beam and the second I-beam are connected in a midpoint cross mode; two ends of the first I-shaped steel and the second I-shaped steel are respectively a first end and a second end of the angle steel inclined strut 14.
Preferably, the angle steel diagonal brace 14 is arranged outside the third main beam 113; the first end of the angle steel inclined strut 14 is connected with the extending end of the I-shaped steel cantilever beam 12; the first end of the angle steel inclined strut 14 is connected with the connecting point of the I-shaped steel cantilever beam 12 and the second main beam 112. The arrangement can improve the overall stability of the second main beam 112 and the outriggers 12.
Preferably, the angle steel diagonal brace 14 is arranged outside the third main beam 113; the first end of the angle steel inclined strut 14 is connected with the extending end of the I-shaped steel cantilever beam 12; the first end of the angle steel inclined strut 14 is connected with the connecting point of the I-shaped steel cantilever beam 12 and the fifth main beam 115. The overall stability of the fifth main beam 115 and the outriggers 12 can be improved according to the arrangement.
Preferably, two ends of the i-steel beam 11 are connected to opposite sidewalls of the third main beam 113 and the second main beam 112, respectively.
Preferably, two ends of the i-steel beam 11 are connected to opposite sidewalls of the third main beam 113 and the fifth main beam 115, respectively.
The arrangement can enhance the connection strength of the third main beam 113, the second main beam 112, the third main beam 113 and the fifth main beam 115.
In a specific embodiment, the i-beam 11 can be replaced by channel steel, square steel pipe, etc.; the channel steel small longitudinal beam 13 can be replaced by I-shaped steel or angle steel; the angle steel inclined strut 14 can be replaced by I-shaped steel or channel steel; the box-type main beams 10 can be spliced into frames with any shapes as required;
the wide-width bridge provides a primary and secondary beam frame structure which is good in economical efficiency, convenient to transport and construct and reliable in quality, and solves a plurality of problems existing when the traditional steel box girder is used for a bridge with a large width.
Another aspect of the present application further provides an assembling method of the above structure, including the following steps:
step S1: the section of the box-type main beam 10 is processed and manufactured in a factory, when the section is processed and manufactured, an annular reinforcing steel plate is welded on a diaphragm plate at the position of a sealing cover plate, and meanwhile, related components of the sealing device are placed in the corresponding positions of the section in advance.
Step S2: the box-type main beams 10 are spliced into an integral frame after being hoisted on site;
and step S3: an I-shaped steel beam 11 and an I-shaped steel cantilever beam 12 are sequentially arranged on the box-type main beam 10;
and step S4: a small channel steel longitudinal beam 13 and an angle steel inclined strut 14 are arranged between the I-shaped steel cross beams 11;
step S5: an angle steel inclined strut 14 is arranged between the I-shaped steel outriggers 12;
step S6: and an anti-corrosion sealing assembly is arranged on a manhole arranged at the end part of the box type main beam 10, and is detachably connected with the manhole at the end part of the box type main beam 10.
Preferably, an anti-corrosion sealing device is arranged, a sealing washer is arranged on the annular reinforcing steel plate, and a sealing cover plate is arranged on the sealing washer; the sealing cover plate is connected with the transverse partition plate through a sealing cover plate bolt, and a cover plate handle is arranged on the sealing cover plate.
Examples
The parts used in the following examples are all commercially available products.
Example 1
I-shaped steel cross beams 11 and I-shaped steel outriggers 12 are sequentially arranged on a box-type main beam 10, small channel steel longitudinal beams 13 and angle steel inclined struts 14 are arranged between the I-shaped steel cross beams 11, and the angle steel inclined struts 14 are arranged between the I-shaped steel outriggers 12. The box-type main beam 10 is formed by welding and assembling a box-type main beam steel plate 30, a box-type main beam stiffening rib 3131, a box-type main beam diaphragm 32 and a box-type main beam diaphragm stiffening rib 33; the end part of the box girder 10 is provided with an anti-corrosion sealing device, an annular reinforced steel plate 50 is welded on the diaphragm plate 32, a sealing washer 51 is arranged on the annular reinforced steel plate 50, a sealing cover plate 34 is arranged on the sealing washer 51, the sealing cover plate 34 is connected with the diaphragm plate 32 through a sealing cover plate bolt 53, and a cover plate handle 52 is arranged on the sealing cover plate 34.
The structure assembling method comprises the following steps:
step S1: the section of the box-type main beam 10 is processed and manufactured in a factory, when the section is processed and manufactured, an annular reinforcing steel plate is welded on a diaphragm plate at the position of a sealing cover plate, and meanwhile, related components of the sealing device are placed in the corresponding position of the section in advance.
Step S2: the box-type main beams 10 are spliced into an integral frame after being hoisted on site;
and step S3: an I-shaped steel cross beam 11 and an I-shaped steel cantilever beam 12 are sequentially arranged on the box-shaped main beam 10;
and step S4: a channel steel small longitudinal beam 13 and an angle steel inclined strut 14 are arranged between the I-shaped steel cross beams 11;
step S5: an angle steel inclined strut 14 is arranged between the I-shaped steel cantilever beams 12;
step S6: an anti-corrosion sealing device is arranged at the end part of the box-type main beam 10, a sealing washer is arranged on the annular reinforcing steel plate, and a sealing cover plate is arranged on the sealing washer; the sealing cover plate is connected with the diaphragm plate through a sealing cover plate bolt, and a cover plate handle is arranged on the sealing cover plate.
Through calculation, the bearing strength of the obtained structure in normal operation meets the requirement, and the crowd load in the normal operation process can reach 4.5kN/m 2 . Can completely replace the prior steel box girder structure for normal use. At present, the structure is constructed and ready to be finished and put into operation.
The method and the structure provided by the application are applied to a certain project in a new area of the violin. The project finishes the ultrasonic detection of the weld joint of the structure in 9 months in 2020, the detection report is numbered as MGCS2020-0739, and the detection conclusion is as follows: the evaluation is carried out according to the GB/T11345-2013 ultrasonic detection technology, detection level and evaluation of welding line non-inertia detection, and the acceptance criteria are met. And the other welding seams are not found to have unacceptable defects. Meets the requirements of JTG/TF50-2011 'Highway, bridge and culvert construction technical specification' and design, and has qualified quality.
Therefore, by adopting the structure and the method provided by the application, the requirement of engineering acceptance can be met, the quality is qualified, and meanwhile, the load strength is the same as that of the steel box girder structure of the existing structure, which indicates that the structure provided by the application can completely replace the existing steel box girder for normal use.
Comparative example
Through calculation, the bearing strength of the existing steel box girder structure in normal operation meets the requirement, and the crowd load in the normal operation process can reach 4.5kN/m 2 However, the existing steel box girder is easy to have weld fatigue in the operation period, and the structural durability is influenced.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. A primary and secondary beam frame structure for a substantially widening bridge, comprising: the structure comprises a main beam structure, a plurality of I-shaped steel cross beams (11) and a plurality of I-shaped steel outriggers (12), wherein the I-shaped steel cross beams are connected with the main beam structure;
the girder structure includes: the box-type main beam structure comprises a plurality of sections of box-type main beams (10), wherein the box-type main beams (10) are connected end to form a triangle, and the box-type main beams (10) are respectively arranged on the longitudinal and transverse central axes of the enclosed triangle;
a plurality of I-shaped steel cross beams (11) are arranged in the main beam structure at intervals along the transverse direction of the main beam structure;
a plurality of I-shaped steel outriggers (12) are arranged at the outer sides of two bevel edges of the main beam structure;
a channel steel small longitudinal beam (13) and an angle steel inclined strut (14) are arranged between any two adjacent I-shaped steel cross beams (11);
an angle steel inclined strut (14) is arranged between any two adjacent I-shaped steel cantilever beams (12);
the box-type main beam (10) is formed by welding and assembling a plurality of box-type main beam steel plates (30), a plurality of box-type main beam stiffening ribs (31), a plurality of box-type main beam diaphragm plates (32) and a plurality of box-type main beam diaphragm plate stiffening ribs (33);
a plurality of box-type main beam steel plates (30) are enclosed into a rectangular box body; box girder stiffening ribs (31) are arranged on the inner side walls of the box girder steel plates (30); the box girder transverse clapboards (32) are arranged in the rectangular box body at intervals and are respectively connected with the inner side walls of opposite side box girder steel plates (30); the box girder diaphragm stiffening ribs (33) are arranged at the inner sides of the holes of the respective box girder diaphragms (32).
2. The primary and secondary beam frame structure for substantially wider bridges of claim 1, comprising: a plurality of box-type main beam stiffeners (31); box girder stiffening ribs (31) are arranged in the middle of each inner side wall of the box girder steel plate (30) along a transverse central shaft of the box girder (10); the box-type girder stiffening ribs (31) are inserted into the mounting grooves formed on the periphery of the box-type girder diaphragm plate (32) and are welded.
3. Primary and secondary beam frame structure for substantially broadened bridges according to claim 1, wherein said box girder (10) comprises: a first main beam (111), a second main beam (112), a third main beam (113), a fourth main beam (114) and a fifth main beam (115); the first main beam (111), the second main beam (112) and the fifth main beam (115) are connected end to end and enclose a triangle; the first end of the third main beam (113) is connected with the midpoint of the second main beam (112); the second end of the third main beam (113) is connected with the midpoint of the fifth main beam (115); the first end of the fourth main beam (114) is connected with the midpoint of the first main beam (111); the second end of the fourth main beam (114) is connected with the connection points of the second main beam (112) and the fifth main beam (115).
4. The primary and secondary girder frame structure for a greatly widened bridge according to claim 1, wherein both ends of said i-beam (11) abut against opposite sidewalls of said first (111) and third (113) girders, respectively, and are spaced apart therefrom.
5. The main and secondary beam frame structure for the bridge with the wide amplitude as recited in claim 4, characterized in that the I-steel outriggers (12) are arranged on the outer side wall of the second main beam (112) and the fifth main beam (115) at intervals;
the small channel steel longitudinal beam (13) is parallel to the first main beam (111), and two ends of the small channel steel longitudinal beam (13) are respectively connected with the middle points of any two adjacent I-shaped steel cross beams (11).
6. The primary and secondary beam frame structure for a substantially wider bridge according to claim 1, wherein the first end of the angle steel diagonal brace (14) is connected with the intersection of the first main beam (111) and the i-beam cross beam (11); the second end of the angle steel inclined strut (14) is connected with the intersection point of the third main beam (113) and the I-shaped steel cross beam (11).
7. The primary and secondary beam frame structure for substantially wider bridges of claim 6, wherein said angle iron sprags (14) are provided outside the third girder (113); the first end of the angle steel inclined strut (14) is connected with the extending end of the I-shaped steel cantilever beam (12); the first end of the angle steel inclined strut (14) is connected with the connecting points of the I-shaped steel cantilever beam (12) and the second main beam (112).
8. Primary and secondary beam frame structure for substantially widened bridge according to claim 7, wherein said angle iron sprag (14) is provided outside the third main beam (113); the first end of the angle steel inclined strut (14) is connected with the extending end of the I-shaped steel cantilever beam (12); the first end of the angle steel inclined strut (14) is connected with the connecting point of the I-shaped steel cantilever beam (12) and the fifth main beam (115).
9. The primary and secondary girder framework structure for a substantially widened bridge according to claim 1, wherein both ends of the i-steel cross beam (11) are connected with opposite sidewalls of the third and second girders (113 and 112), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221761392.XU CN218322308U (en) | 2022-07-08 | 2022-07-08 | Primary and secondary beam frame structure for wide-range bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221761392.XU CN218322308U (en) | 2022-07-08 | 2022-07-08 | Primary and secondary beam frame structure for wide-range bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218322308U true CN218322308U (en) | 2023-01-17 |
Family
ID=84871176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221761392.XU Active CN218322308U (en) | 2022-07-08 | 2022-07-08 | Primary and secondary beam frame structure for wide-range bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218322308U (en) |
-
2022
- 2022-07-08 CN CN202221761392.XU patent/CN218322308U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113152283B (en) | Construction method of large-crotch-diameter supporting system of small box girder type hidden cover beam prefabricated on road and bridge | |
| KR101118608B1 (en) | Phi truss structure | |
| CN109339250B (en) | Node reinforced spliced steel pipe concrete connection structure and construction method thereof | |
| US20120255255A1 (en) | Aluminium alloy truss structure | |
| CN212771967U (en) | Rapid Assembly formula steel pipe lattice mound | |
| CN111255138B (en) | Construction method of continuous multi-span large-span high-altitude aluminum alloy latticed shell structure | |
| KR102065697B1 (en) | Joint structure of circular steel tube truss construction | |
| RU208873U1 (en) | BEAM OF THE CABLE REST | |
| CN111364362A (en) | Bridge construction process adopting all-welded integral node steel pipe truss chord member prefabricated unit | |
| CN111042318B (en) | Single-layer aluminum alloy latticed shell box type modular assembly joint and construction process thereof | |
| CN218322308U (en) | Primary and secondary beam frame structure for wide-range bridge | |
| CN111119336A (en) | Y-shaped vertical face intersection conversion node formed by welding box-type steel pipes and application | |
| CN114016608A (en) | Assembly type beam-column strong shaft connecting joint and construction method thereof | |
| CN211228890U (en) | Novel steel-concrete-FRP combined structure | |
| CN110700422B (en) | DK type space intersection node formed by welding box type steel pipes and application | |
| CN115094740A (en) | Primary and secondary beam frame structure for bridge with wide width and assembling method thereof | |
| CN111945569A (en) | Small-angle inclined steel arch tower support-free in-situ assembly type asymmetric tensioning assembly construction method | |
| CN216428562U (en) | Assembled beam column weak axis connected node | |
| CN111172856A (en) | Half-through type longitudinal block prefabricated box girder | |
| CN114717944B (en) | Erection method of inverted trapezoid-section steel truss bridge | |
| CN214219348U (en) | Combined high-strength concrete bridge plate girder | |
| CN111456454A (en) | Steel net rack construction method | |
| CN111042323A (en) | X-shaped vertical face intersection node formed by welding box-type steel pipes and application | |
| CN217651595U (en) | End structure of frame box type beam | |
| CN217679832U (en) | Assembly type shear wall structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |