CN222975677U - Main and auxiliary truss combined steel truss bridge deck block assembly jig frame - Google Patents

Abstract

The utility model relates to a main and secondary trusses combined with steel truss bridge deck block assembly frame, wherein an intermediate column is provided in the middle of the frame, and transverse connecting plates are provided on both sides of the intermediate column; a transverse connecting plate is provided on the inner side of the side column, the transverse connecting plate is bolted to the splicing plate, the splicing plate is welded to the intermediate bridge deck block cross beam, the outer side of the side column is connected to the diagonal brace, and the splicing plate is welded to the side bridge deck block cross beam. Advantages: First, the synchronous assembly operation of the intermediate bridge deck block and the two side bridge deck blocks can be realized, the production efficiency can be improved, the site can be reasonably used, the number of columns can be reduced by one third, the steel consumption of the frame manufacturing can be reduced, and the manufacturing cost can be saved; second, the overall transverse pre-camber of the two bridge deck blocks can be accurately controlled and adjusted, so that the overall bridge line shape meets the design and requirements; third, the frame structure is simple, safe and stable, and has strong operability, which can meet the requirements of component accuracy and quality control under large-scale production conditions, especially under the conditions of tight construction period and heavy tasks, as well as the needs of mass production, and has high promotion value.

Description

Main and auxiliary truss combined steel truss bridge deck block assembly jig frame

Technical Field

The utility model relates to an application of a main and auxiliary girder combined steel girder bridge deck block assembly jig frame in a large-span highway and railway dual-purpose double-layer main and auxiliary girder combined steel girder bridge, belonging to the field of steel bridge manufacturing.

Background

CN219157425U, the name "a main and auxiliary truss combined steel truss cable-stayed bridge deck plate assembly jig frame", which comprises a plurality of equidistant parallel support longitudinal beams, wherein the central line of one support longitudinal beam in the middle is overlapped with the longitudinal base line of the bridge deck plate, two support longitudinal beams are arranged on the outer sides of the two outermost support longitudinal beams in an equidistant parallel manner, support plates are arranged at the top ends of the support longitudinal beams, the transverse connecting lines of the top ends of the support plates are curves with high middle and low two ends, the radian of the curves is consistent with the transverse pre-camber of the bridge deck plate, upright posts are arranged at the top ends of the support longitudinal beams, the distance between the upright posts is consistent with the distance between the bridge deck plate and the bridge deck plate, transverse connecting plates are arranged on the inner sides of the upright posts, and bolt hole groups are arranged on the transverse connecting plates and are matched with the bolt hole groups at the end parts of the bridge deck plate. The assembly jig frame is manufactured according to the assembly jig frame, two pairs of independent pre-assembly jig frames are required to be manufactured, the assembly jig frame is easily limited by manufacturing sites, and the transverse pre-camber of the whole bridge deck cannot be accurately controlled and adjusted, so that the bridge forming line shape is difficult to meet the design requirement.

Disclosure of Invention

The method has the advantages that the defects in the background technology are avoided, the assembly operation of the middle bridge deck block and the bridge deck blocks at two sides can be met, the transverse pre-camber of the bridge deck can be accurately controlled and regulated, the two bridge deck blocks can synchronously discharge tires, the manufacturing difficulty of the bridge deck blocks is reduced, the production efficiency is improved, the field is reasonably utilized, the steel material consumption of the jig frame is reduced, the manufacturing cost is saved, the overall stability of the jig frame is improved, the construction safety is ensured, and the requirements of component precision and quality control under the condition of mass production, especially under the condition of urgent construction period and heavy task, and the main truss and auxiliary truss combined steel truss bridge deck block assembly jig frame required by mass production can be met.

The design scheme is that the design purpose is achieved. The steel truss girder of the Chongqing temple Yangtze river bridge is of an inverted trapezoid cross section, a main truss and an auxiliary truss are combined, the structure is novel, a bolt welding combination connection mode is adopted, the connection relation of rod pieces is quite complex, the bridge deck of the upper layer highway comprises a middle bridge deck block, an upper chord top plate and two side bridge deck blocks, the upper chord is used as a part of the bridge deck, the matching precision requirement with the bridge deck is high, and the bridge deck block consists of an orthotropic steel bridge deck and a cross beam.

The main truss and auxiliary truss combined steel truss bridge deck block assembly jig comprises side upright posts, wherein transverse connecting plates are arranged on the inner sides of the side upright posts, bolt hole groups are arranged on the transverse connecting plates and matched with splicing plate hole groups arranged on the end parts of side bridge deck block beams, the splicing plates are welded with the side bridge deck block beams and are bolted with the transverse connecting plates, and the outer sides of the side upright posts are connected with inclined struts; the middle part of the jig frame is provided with a middle upright post, two sides of the middle upright post are provided with transverse connecting plates, the transverse connecting plates are provided with bolt hole groups, the bolt hole groups are matched with splicing plate hole groups arranged on the end parts of side bridge deck blocks and middle bridge deck block beams, and the splicing plates are welded with the middle bridge deck block beams; the bridge deck bridge comprises a bridge deck block body and a bridge deck block body, wherein the bridge deck block body is arranged at the bottom of the bridge deck block body, the center line of the bridge deck block body is arranged at the center line of the bridge deck, the center line of the bridge deck is overlapped with the longitudinal base line of the bridge deck block body, dental plates are arranged at the top ends of the bridge deck, the heights of the dental plates can be adjusted up and down in clamping grooves at the top ends of the bridge deck, transverse connecting lines at the tops of the dental plates are curves with high middle ends and low ends, the radian of the curves is consistent with the transverse pre-camber of the bridge deck block body, 2 supporting points are additionally arranged at the bottom of the bridge deck block body at the middle except the two ends and the middle according to the span, the supporting points are positioned at the position with larger rigidity below a beam vertical stiffening rib, the transverse pre-camber is accurately adjusted and controlled, the heights of the dental plates at the two ends of the bridge deck block body are associated with the heights of the dental plates at the bottom of the bridge deck block body at the top, and the height difference is determined according to the numerical value obtained by the computer simulation pre-camber curve.

Further, the bases of the side stand columns, the middle stand column, the buttress and the diagonal bracing are bolted with the hardened ground through expansion bolts.

Further, the side stand column, the middle stand column and the buttress are welded with the base by adopting vertical H-shaped steel, and the longitudinal spacing is consistent with the bridge deck block beam spacing.

Further, longitudinal connecting channel steel is arranged between the side stand columns and the middle stand column, the position of the longitudinal connecting channel steel is 2/3 of the height of the vertical rod, and the connecting channel steel is welded with the stand columns;

Further, the lateral bridge deck blocks and the transverse base lines of the middle bridge deck blocks are on the same straight line, the longitudinal base lines of the lateral bridge deck blocks are parallel to the longitudinal base lines of the middle bridge deck blocks, and the intervals between the longitudinal base lines are equal.

Further, the beam unit adopts a hole making process of a rear hole method, so that matching precision with the chord member is ensured, a splice plate is arranged at the end part of the beam, and the splice plate is welded and fixed with the beam after the height adjustment of the beam is completed.

Compared with the prior art, the utility model has the advantages that the synchronous splicing operation of the middle bridge deck block and the bridge deck blocks at two sides can be realized, the production efficiency is improved, the field is reasonably utilized, the number of the stand columns is reduced by one third, the steel material consumption for manufacturing the jig frame is reduced, the manufacturing cost is saved, the integral transverse pre-camber of the two bridge deck blocks can be precisely controlled and adjusted, the integral bridge forming line shape can meet the design and the requirements, the jig frame is simple in structure, safe and stable, the operability is high, the requirements on component precision and quality control under the condition of mass production, especially under the condition of urgent construction period and heavy task, and the requirement on mass production can be met, and the popularization value is high.

Drawings

FIG. 1 is a schematic elevation view of a bridge deck block assembly jig.

Fig. 2 is a schematic plan layout of a bridge deck block assembly jig.

Fig. 3 is a schematic diagram of an assembled side column.

Fig. 4 is a schematic view of a fulcrum post assembly.

Fig. 5 is a schematic diagram of the center post assembly.

Fig. 6 is a schematic view of a vertical column connection assembly.

Detailed Description

Example 1 please refer to fig. 1-6. A main truss and auxiliary truss combined steel truss bridge deck block assembly jig frame is characterized in that a middle upright post 5 is arranged in the middle of the jig frame, transverse connecting plates 7 are arranged on two sides of the middle upright post 5, transverse connecting plates 7 are arranged on the inner sides of side upright posts 3, the transverse connecting plates 7 are connected with splice plates 8, the splice plates 8 are welded with a cross beam of the middle bridge deck block 2, the outer sides of the side upright posts 3 are connected with inclined struts 6, and the splice plates 8 are welded with a cross beam of the side bridge deck block 1. The transverse connection plate 7 is provided with a bolt hole group which is matched with a splice plate 8 hole group arranged on the end part of the bridge deck block body beam at the side. The bolt hole group is matched with the splice plate 8 hole group arranged on the end parts of the beam of the side bridge deck block 1 and the middle bridge deck block 2. The bottom of the beam of the side bridge deck block 1 and the bottom of the beam of the middle bridge deck block 2 are provided with buttresses 4, and the top center line of each buttress 4 at the center line position of the jig frame coincides with the longitudinal base line of the middle bridge deck block 2. The top of the buttress 4 is provided with a dental lamina 9, the elevation of the dental lamina 9 can be adjusted up and down in a clamping groove at the top of the buttress 4, and a transverse connecting line at the top of the dental lamina 9 is a curve with high middle and low two ends. The radian of the curve is consistent with the transverse pre-camber of the bridge deck block. The bottom of the middle bridge deck block 2 cross beam is additionally provided with 2 supporting points according to the span except the two ends and the middle part. And the supporting point is positioned below the vertical stiffening rib of the cross beam. The bottom of the two ends of the beam of the bridge deck block 1 at the side is provided with a buttress 4, the elevation of the dental lamina at the top of the buttress is related to the elevation of the dental lamina at the bottom of the bridge deck block in the middle, and the elevation difference is determined according to the numerical value obtained by computer simulation of the pre-camber curve.

The implementation measures are that in order to ensure the implementation effect of the technology, the following measures are adopted for control:

1) The base is bolted with the ground by adopting an M20 expansion bolt, and the ground bearing capacity is not less than 40KPa;

2) After the beam is positioned, measures such as clamping and fixing of a kalant are adopted to prevent toppling;

3) In order to ensure stable and safe structure, the upright posts are longitudinally connected by using channel steel 10, and a safety mark is arranged at the top of each upright post to avoid collision;

4) Setting a permanent level control point on the stable ground outside the jig frame, and periodically monitoring the settlement condition of the jig frame, wherein the height difference of the supporting points of the single block jig frame is not more than 1.5mm, and the whole jig frame is not more than 3mm;

5) The beam elevation is adjusted by moving the dental plate up and down, and after the beam elevation is checked to be qualified, the beam elevation is welded with the jig frame, so that the beam linearity and stability are ensured.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

It should be understood that, although the foregoing embodiments have described the design concept of the present utility model in more detail, these descriptions are merely descriptive of the design concept of the present utility model, and not restrictive of the design concept, and any combination, addition or modification not exceeding the design concept of the present utility model falls within the scope of the present utility model.

Claims (9)

1. A main truss and auxiliary truss combined steel truss bridge deck block assembly jig frame is characterized in that a middle upright post (5) is arranged in the middle of the jig frame, transverse connecting plates (7) are arranged on two sides of the middle upright post (5), transverse connecting plates (7) are arranged on the inner sides of side upright posts (3), the transverse connecting plates (7) are connected with splice plates (8), the splice plates (8) are welded with cross beams of the middle bridge deck block (2), the outer sides of the side upright posts (3) are connected with inclined struts (6), and the splice plates (8) are welded with cross beams of the side bridge deck block (1).

2. The main and auxiliary girder combined steel truss bridge deck block assembly jig frame according to claim 1, wherein bolt hole groups are arranged on the transverse connecting plates (7) and matched with splice plate (8) hole groups arranged on the end parts of side bridge deck block beams.

3. The main and auxiliary truss combined steel truss bridge deck block assembly jig frame according to claim 2, wherein the bolt hole groups are matched with splice plate (8) hole groups arranged on the end parts of the cross beams of the side bridge deck blocks (1) and the middle bridge deck block (2).

4. The main and auxiliary truss combined steel truss bridge deck block assembly jig frame according to claim 1, wherein the side bridge deck blocks (1) and the middle bridge deck block (2) are arranged at the bottoms of the cross beams, the center line of the top of the buttress (4) at the center line of the jig frame is coincident with the longitudinal base line of the middle bridge deck block (2).

5. The assembly jig frame for the bridge deck blocks of the main and auxiliary trusses combined with the steel trusses according to claim 1, wherein dental plates (9) are arranged at the top ends of the buttresses (4), the heights of the dental plates (9) can be adjusted up and down in clamping grooves at the tops of the buttresses (4), and transverse connecting lines at the top ends of the dental plates (9) are curves with high middle parts and low two ends.

6. The main and auxiliary girder combined steel truss bridge deck block assembly jig frame according to claim 5, wherein the radian of the curve is consistent with the transverse pre-camber of the bridge deck block.

7. The main and auxiliary truss combined steel truss bridge deck block assembly jig frame according to claim 1, wherein the bottom of the cross beam of the middle bridge deck block (2) is additionally provided with 2 supporting points according to the span except the two ends and the middle part.

8. The main and auxiliary girder combined steel truss bridge deck block assembly jig frame according to claim 7, wherein the supporting point is located below the beam vertical stiffening rib.

9. The main and auxiliary truss combined steel truss bridge deck block assembly jig frame according to claim 1, wherein buttresses (4) are arranged at the bottoms of two ends of a cross beam of the side bridge deck block (1), the heights of dental plates at the tops of the buttresses are related to the heights of dental plates at the bottoms of the middle bridge deck blocks, and the height difference is determined according to the numerical value obtained by computer simulation of a pre-camber curve.