CN214737300U - Transverse wide-interval double-hanging-rod connecting structure for arch bridge without cross braces - Google Patents

Abstract

The utility model relates to a non-cross-brace arch bridge is with two hanger rod connection structures of horizontal wide interval belongs to bridge technical field, specifically includes that the bottom of arch rib is provided with two articulated ear seats, the upper end of two hanger rods articulates on two articulated ear seats respectively, the lower extreme of two hanger rods is fixed and connected on the tie beam, the hanger rod adopts the whole bundle of extrusion formula anchor steel strand wires of taking the ball pivot; the arch rib is the uncovered box structure of rectangle that is formed by four steel sheet welding, and the middle part of this box is provided with longitudinal baffle, and longitudinal baffle separates into two cavities with the steel case, installs a horizontal backup pad in every cavity respectively, is provided with the manhole in the horizontal backup pad, is provided with the fixed slot in the tie beam, and the top and the bottom of fixed slot all are fixed with the connecting plate, are fixed with two connecting pipes between the connecting plate, and the jib cartridge is in the connecting pipe, and the bottom of jib is provided with spacing arch, and spacing protruding card is in the below of fixed slot bottom connecting plate, the utility model discloses simple structure, convenient to use, stable in structure is reliable.

Description

Transverse wide-interval double-hanging-rod connecting structure for arch bridge without cross braces

Technical Field

The utility model relates to a no stull arch bridge is with two davit connection structure of horizontal wide interval belongs to bridge technical field.

Background

The hanger rods of the tied arch bridge commonly adopted in the current engineering mainly comprise a vertical hanger rod system and a Nielsen hanger rod system. The hanger rods of the vertical hanger rod system are vertical hanger rods, the hanger rods of the Nielson hanger rod system are obliquely arranged, the reasonable arch axes of the two arch bridges are parabolas, the stress performance is better under the action of full-hole uniform load, and the arch ribs and the tie bars mainly bear axial force. The design control working condition of the arch bridge is vertical live-load half-hole loading, the bending moment ratio of the arch rib and the tie bar is larger, and meanwhile, the vertical displacement of the tie bar and the beam end corner reach the maximum value. However, the existing arch bridge has complex design, poor torsional strength and poor stability.

SUMMERY OF THE UTILITY MODEL

For solving the technical problem that prior art exists, the utility model provides a simple structure, convenient to use, reliable and stable in structure's no stull arch bridge is with two davit connection structure of horizontal wide interval.

In order to achieve the purpose, the technical scheme adopted by the utility model is a transverse wide-spacing double-hanging-rod connecting structure for a non-cross-brace arch bridge, which comprises a tie beam, an arch rib and hanging rods, wherein the bottom of the arch rib is provided with two hinged lug seats, the upper ends of the two hanging rods are respectively hinged on the two hinged lug seats, the lower ends of the two hanging rods are fixedly connected on the tie beam, and the hanging rods adopt a whole bundle of extrusion type anchoring steel stranded wires with spherical hinges; the arch rib is the open box structure of rectangle that is formed by four steel sheet welding, and the middle part of this box is provided with longitudinal baffle, longitudinal baffle separates into two cavities, every with the steel case install a horizontal backup pad in the cavity respectively, be provided with the manhole in the horizontal backup pad, be provided with the fixed slot in the tie beam, the top and the bottom of fixed slot all are fixed with the connecting plate, be fixed with two connecting pipes between the connecting plate, the jib cartridge is in the connecting pipe, and the bottom of jib is provided with spacing arch, spacing arch card is in the below of fixed slot bottom connecting plate.

Preferably, the arch rib sagittal ratio is 1:6, the arch height is 30 m, the arch axis is a quadratic parabola, and the arch rib is a flat section with the height-to-width ratio of about 1: 1.6.

Preferably, a plurality of reinforcing ribs are fixed on the inner walls of the four steel plates of the arch rib, fixing clamping grooves for placing the reinforcing ribs are formed in the periphery of the transverse supporting plate, and the reinforcing ribs and the transverse supporting plate are fixed in a welding mode.

Preferably, a first reinforcing steel plate and a second reinforcing steel plate are further fixed in the bottom steel plate of the arch rib, the first reinforcing steel plate and the second reinforcing steel plate are vertically arranged, and the connecting position of the first reinforcing steel plate and the second reinforcing steel plate corresponds to the position of the hinge lug seat.

Preferably, reinforcing rib plates are arranged on the periphery of the connecting pipe and are arranged along the length direction of the connecting pipe.

Compared with the prior art, the utility model discloses following technological effect has: the utility model adopts a double-hanging-rod flexible system which is arranged transversely in parallel, the upper end of the hanging rod is connected with the steel box arch in a pin hinge way, and the lower end of the hanging rod is anchored with the tie beam in an anchor box way; the double-suspender system (with the transverse distance of 1.5 m) not only strengthens the torsional rigidity of the bridge deck system, but also reduces the size and stress concentration of the anchorage device, and is beneficial to the future cable replacement engineering. The hanger rod adopts a whole bundle of extrusion type anchoring steel stranded wires with spherical hinges, and the problems of fatigue and fracture caused by large rotation angle of the short hanger rod are solved.

The arch rib adopts two parallel open steel boxes with equal cross sections and has no hinged arch, and continuous longitudinal stiffening ribs are arranged in the box arch and participate in structural stress together with the panel. The arch rib has concise lines, beautiful shape and transparent visual field, and provides convenience for modeling by combining local abstract elements; the structure is stressed clearly, and the force transmission path is clear and smooth. The arch rib sagittal-span ratio is 1:6, the arch height is 30 m, and the arch axis adopts a quadratic parabola. The arch rib adopts a flat section with the height-to-width ratio of about 1:1.6, the transverse bending and torsional rigidity of the arch rib is increased, and the transverse stability of a structural system without a cross brace is well solved. The single arch rib adopts different plate thicknesses to adapt to the change of section stress, saves steel and is economical and reasonable.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the middle arch rib of the present invention.

Fig. 3 is a schematic structural view of the middle tie beam of the present invention.

Fig. 4 is a sectional view taken along line a-a of fig. 3.

Fig. 5 is a sectional view taken along line B-B in fig. 3.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 5, a transverse wide-space double-hanging-rod connecting structure for a non-cross-strut arch bridge comprises a tie beam 1, arch ribs 2 and hanging rods 3, wherein the bottom of each arch rib 2 is provided with two hinge lug seats 4, the upper ends of the two hanging rods 3 are respectively hinged on the two hinge lug seats 4, the lower ends of the two hanging rods 3 are fixedly connected to the tie beam 1, and the hanging rods 3 adopt a whole bundle of extrusion type anchoring steel stranded wires with spherical hinges; arch rib 2 is the uncovered box structure of rectangle that is formed by four steel sheet welding, the middle part of this box is provided with longitudinal baffle 5, longitudinal baffle 5 separates into two cavities with the steel case, install a horizontal backup pad 6 in every cavity respectively, be provided with manhole 7 on the horizontal backup pad 6, be provided with fixed slot 8 in the tie beam 1, the top and the bottom of fixed slot 8 all are fixed with connecting plate 9, be fixed with two connecting pipes 10 between the connecting plate 9, 3 cartridges of jib are in connecting pipe 10, and the bottom of jib 3 is provided with spacing arch 11, spacing arch 11 card is in the below of fixed slot bottom connecting plate 9.

The 2-rise span ratio of the middle arch rib of the utility model adopts 1:6, the arch height is 30 m, the arch axis adopts a quadratic parabola, and the arch rib adopts a flat section with the height-width ratio of about 1: 1.6. The transverse bending and torsional rigidity of the arch rib is increased, and the transverse stability of a structural system without a transverse support is well solved. The single arch rib adopts different plate thicknesses to adapt to the change of section stress, saves steel and is economical and reasonable. A plurality of reinforcing rib ribs 12 are fixed on the inner walls of the four steel plates of the arch rib 2, fixing clamping grooves 13 for placing the reinforcing rib ribs are arranged around the transverse supporting plate 6, and the reinforcing rib ribs 12 are welded and fixed with the transverse supporting plate 6. The steel plate and the transverse supporting plate jointly participate in structural stress, and the arch rib has concise lines, beautiful shape and transparent visual field, thereby providing convenience for combining local abstract element modeling; the structure is stressed clearly, and the force transmission path is clear and smooth. Still be fixed with first reinforcing steel plate 14 and second reinforcing steel plate 15 in the bottom steel sheet of arch rib 2, first reinforcing steel plate 14 and second reinforcing steel plate 15 are arranged perpendicularly, and the hookup location of first reinforcing steel plate 14 and second reinforcing steel plate 15 is corresponding with the position of articulated ear seat 4, strengthens the intensity that the ear seat can be strengthened to first reinforcing steel plate 14 and second reinforcing steel plate 15, guarantees that the structure is reliable stable. The periphery of the connecting pipe 10 is provided with reinforcing rib plates 16, and the reinforcing rib plates 16 are arranged along the length direction of the connecting pipe 10. The reinforcing rib plate is mainly used for improving the strength of the connecting pipe and improving the structural stability.

The foregoing is considered as illustrative and not restrictive, and any modifications, equivalents, and improvements made within the spirit and principles of the invention are intended to be included within the scope of the invention.

Claims (5)

1. The utility model provides a no stull arch bridge is with two jib connection structure of horizontal wide interval, includes tie beam, arch rib and jib, its characterized in that: the bottom of the arch rib is provided with two hinged lug seats, the upper ends of the two suspenders are respectively hinged on the two hinged lug seats, the lower ends of the two suspenders are fixedly connected to the tie beam, and the suspenders adopt a whole bundle of extrusion type anchoring steel stranded wires with spherical hinges; the arch rib is the open box structure of rectangle that is formed by four steel sheet welding, and the middle part of this box is provided with longitudinal baffle, longitudinal baffle separates into two cavities, every with the steel case install a horizontal backup pad in the cavity respectively, be provided with the manhole in the horizontal backup pad, be provided with the fixed slot in the tie beam, the top and the bottom of fixed slot all are fixed with the connecting plate, be fixed with two connecting pipes between the connecting plate, the jib cartridge is in the connecting pipe, and the bottom of jib is provided with spacing arch, spacing arch card is in the below of fixed slot bottom connecting plate.

2. The transverse wide-spacing double-hanging-rod connecting structure for the arch bridge without the transverse support as claimed in claim 1, wherein: the arch rib aspect ratio is 1:6, the arch height is 30 m, the arch axis is a quadratic parabola, and the arch rib is a flat section with the height-to-span ratio of about 1: 1.6.

3. The transverse wide-spacing double-hanging-rod connecting structure for the arch bridge without the transverse support as claimed in claim 1, wherein: the inner walls of the four steel plates of the arch rib are respectively fixed with a plurality of reinforcing rib ribs, the periphery of the transverse supporting plate is provided with a fixing clamping groove for placing the reinforcing rib ribs, and the reinforcing rib ribs and the transverse supporting plate are welded and fixed.

4. The transverse wide-spacing double-hanging-rod connecting structure for the arch bridge without the transverse support as claimed in claim 1, wherein: still be fixed with first reinforced steel board and second reinforced steel board in the bottom steel sheet of arch rib, first reinforced steel board and second reinforced steel board are arranged perpendicularly, and the hookup location of first reinforced steel board and second reinforced steel board corresponds with the position of articulated ear seat.

5. The transverse wide-spacing double-hanging-rod connecting structure for the arch bridge without the transverse support as claimed in claim 1, wherein: and reinforcing rib plates are arranged around the connecting pipe and are arranged along the length direction of the connecting pipe.

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