CN111472251B

CN111472251B - Large-span steel structure connecting node adds solid connection structure

Info

Publication number: CN111472251B
Application number: CN202010316477.6A
Authority: CN
Inventors: 汤仁超; 邱甜甜; 李西华
Original assignee: Nanjing Sanhui Construction Engineering Co ltd
Current assignee: NANJING SANHUI CONSTRUCTION ENGINEERING Co.,Ltd.
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-03-19
Anticipated expiration: 2040-04-21
Also published as: CN111472251A

Abstract

The invention relates to a large-span steel structure connecting node reinforcing and connecting structure which comprises a bridge body, a mounting curved beam, a lifting beam, a reinforcing unit, a connecting unit and a buffer cable, wherein the mounting curved beam is symmetrically arranged at the front and back of the upper end of the bridge body, the connecting unit is uniformly arranged at the upper end of the bridge body from left to right, the lifting beam is arranged at the upper end of the connecting unit, the reinforcing unit is uniformly arranged at the lower end of the mounting curved beam from left to right along the track direction of the mounting curved beam, the reinforcing unit is connected with the lifting beam in a clamping manner, and the reinforcing units are connected through the buffer cable; according to the invention, the upper end and the lower end of the lifting beam are clamped, and the contact surface between the lifting beam and the connecting piece is eliminated through a plurality of structures, so that the clamping strength between the connecting piece and the lifting beam is high, and the problem of potential safety hazard caused by separation of the lifting beam and the connecting structure when the bridge body is stressed too violently is solved.

Description

Large-span steel structure connecting node adds solid connection structure

Technical Field

The invention relates to the technical field of steel structures, in particular to a large-span steel structure connecting node reinforcing and connecting structure.

Background

The bridge is generally a structure which is erected on rivers, lakes and seas and allows vehicles, pedestrians and the like to smoothly pass through. In order to adapt to the modern high-speed developed traffic industry, bridges are also extended to be constructed to span mountain stream, unfavorable geology or meet other traffic needs, so that the buildings are convenient to pass. The bridge generally comprises an upper structure, a lower structure, a support and an auxiliary structure, wherein the upper structure is also called a bridge span structure and is a main structure for spanning obstacles; the lower structure comprises a bridge abutment, a bridge pier and a foundation; the support is a force transmission device arranged at the supporting positions of the bridge span structure and the bridge pier or the bridge abutment; the auxiliary structures refer to bridge end butt straps, tapered revetments, diversion works and the like.

The superstructure of the bridge is generally formed by splicing a plurality of steel products and steel structure connecting pieces, and the steel structure connecting pieces often have the following problems: firstly, the lifting beam usually plays a role of lifting the bridge body upwards, but the common connecting structure only connects and fixes the lifting beam and the placing curved beam, and when the bridge body is stressed violently, the lifting beam can be separated from the connecting structure, so that potential safety hazards are caused; secondly, when fixed carry the straining beam, often can be because of coupling mechanism's deviation from top to bottom to make and carry the straining beam to have slight slope, make to settle bent beam except receiving decurrent pulling force, still can receive horizontal pulling force, thereby cause the potential safety hazard.

Disclosure of Invention

The invention aims to provide a large-span steel structure connecting joint reinforcing and connecting structure which has the functions of preventing a lifting beam from being separated and centering and fixing by clamping the lifting beam and solves the problems.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: a large-span steel structure connecting node reinforcing and connecting structure comprises a bridge body, a placing curved beam, a lifting beam, a reinforcing unit, a connecting unit and a buffer cable, wherein the placing curved beam is symmetrically arranged at the front and back of the upper end of the bridge body, the connecting unit is uniformly arranged at the upper end of the bridge body from left to right, the lifting beam is arranged at the upper end of the connecting unit, the reinforcing unit is uniformly arranged at the lower end of the placing curved beam from left to right along the track direction of the placing curved beam, the reinforcing unit is connected with the lifting beam in a clamping manner, and the reinforcing units are connected with each other through the buffer cable; the reinforcing unit fixedly connects the placing curved beam with the lifting beam, the connecting unit fixedly connects the bridge body with the lifting beam, and the buffer cable enables a single reinforcing unit to be dispersed to a plurality of reinforcing units to bear force together when bearing force;

the reinforcing unit comprises a clamping seat, a threaded column, a rotating hand wheel, an opening and closing frame, a clamping mechanism, a sliding block, a buffer plate and a fixing mechanism, wherein the clamping seat is uniformly arranged at the lower end of the curved beam from left to right along the track direction of the curved beam, sliding grooves are symmetrically formed in the left and right of the lower end of the clamping seat, the threaded column is arranged on the inner wall of the left end of each sliding groove through a bearing, the rotating hand wheel is arranged at the right end of the threaded column, the opening and closing frame is connected with the sliding grooves in a sliding mode, the opening and closing frame is connected with the threaded column in a threaded connection mode, the sliding block is arranged at the lower end of the clamping seat in a sliding fit mode, the buffer plate is arranged; screwing a rotating hand wheel to drive a threaded column to rotate, driving an opening and closing frame to be closed inwards through a screw nut structure formed by combining the threaded column and the opening and closing frame, clamping a lifting beam through an L-shaped structure by the opening and closing frame, fixing the outer wall of the lifting beam through a clamping mechanism, driving a buffer plate to extrude the lifting beam downwards through a sliding block, preventing a gap between the lifting beam and the inner wall of the lower end of the opening and closing frame, enabling the lifting beam not to impact the opening and closing frame when stressed, and reinforcing the joint of the opening and closing frame and the lifting beam through the outer wall of the opening and closing frame through a fixing mechanism;

fixture include slip post, centre gripping arc board, clamping spring, rubber pad and slip billet, open and shut the inner from last dead slot down evenly seted up of frame, the slip post is connected with the dead slot through the slip mode, slip post inner is provided with the centre gripping arc board, is connected through clamping spring between slip post outer end and the dead slot outer end inner wall, centre gripping arc board inner is provided with the rubber pad, the slip billet evenly sets up in the rubber pad inner along centre gripping arc board orbit direction. The clamping spring pushes the clamping arc plate to continuously apply force to the lifting beam, so that fixation of the lifting beam is reinforced, the rubber pad reduces a gap between the clamping arc plate and the lifting beam, and the sliding steel bar reduces friction between the rubber pad and the lifting beam.

The connecting unit comprises a connecting seat, a fixing plate, an auxiliary spring, a guide groove, a locking arc plate and a locking mechanism, the connecting seat is uniformly arranged at the upper end of the bridge body from left to right, the fixing plate is connected with the inner wall of the connecting seat in a sliding mode, the auxiliary spring is arranged at the lower end of the fixing plate, the guide groove is symmetrically formed in the front and back of the upper end of the connecting seat, the locking arc plate is symmetrically connected with the guide groove in a sliding fit mode, and the locking mechanism is arranged at the lower end of the locking arc plate; promote the dead arc board of lock of one end, drive the dead arc board of lock of the other end through locking mechanism and inwards feed together to make the dead arc board of lock will carry the fixed center joint of straining beam, auxiliary spring upwards promotes the fixed plate, eliminates the clearance between connecting seat and the straining beam.

As a preferable scheme of the present invention, the right end of the opening and closing frame is provided with a threaded through hole, the threaded through hole is connected with the threaded column in a threaded connection manner, and a thread turning direction of the threaded through hole on the left side of the sliding block is opposite to a thread turning direction of the threaded through hole on the right side of the sliding block. The screw thread turns to opposite screw thread through-hole and makes when the screw thread post rotates, the frame that opens and shuts carries out the action of opening and shutting.

As a preferable scheme of the present invention, the fixing mechanism includes a fixed half ring, a rotating shaft, a locking plate, a matching plate and a rotating plate, the fixed half ring is disposed at a left end of the opening and closing frame located at the left side of the sliding block, the rotating shaft is disposed between inner walls of upper and lower ends of the fixed half ring through a bearing, the rotating half ring is disposed on an outer wall of the rotating shaft, the locking plate is disposed at a right end of the fixed half ring, the matching plate is disposed at a left end of the rotating half ring, and the rotating plate is disposed. Drive through the axis of rotation and rotate another frame of opening and shutting of semi-ring joint, there is the clearance at the stationary half ring and the rotation semi-ring other end to when locking plate and cooperation board are died through the bolt lock, powerful locking can be applyed to the frame of opening and shutting to stationary half ring and rotation semi-ring, and the rotor plate passes through rotatable structure, makes when locking plate and cooperation board are not fixed well, preferentially passes through bolt fastening rotor plate and locking plate, thereby fixes the hole site of locking plate and cooperation board.

In a preferred embodiment of the present invention, the locking plate, the mating plate and the rotating plate have bolt holes at right ends thereof.

As a preferred scheme of the present invention, the locking mechanism includes a rack plate, a rotating gear, an engaging gear and a fixing hole, the rack plate is disposed at the lower end of the locking arc plate, the rotating gear is disposed on the inner wall of the rear end of the guide groove located at the rear side through a bearing, the rotating gear is connected with the rack plate through an engaging manner, the engaging gear is disposed at the rear end of the rotating gear, the engaging gears are connected through an engaging manner, and the fixing hole is disposed at the outer end of the locking arc plate. When the locking arc plate at one end is pushed, the meshing gear is driven to rotate through the meshing of the rack plate and the rotary gear, the meshing gear drives the other meshing gear to rotate in the opposite direction through a meshing mode, and therefore the locking arc plate at the other end is driven to simultaneously feed inwards through the rotary gear and the rack plate.

The invention has the beneficial effects that:

1. according to the invention, the upper end and the lower end of the lifting beam are clamped, and the contact surface between the lifting beam and the connecting piece is eliminated through a plurality of structures, so that the clamping strength between the connecting piece and the lifting beam is high, and the problem of potential safety hazard caused by the separation of the lifting beam and the connecting structure when the bridge body is stressed too violently is solved; according to the invention, through the structural design of the self-centering clamping lifting beam at the upper end and the lower end, the lifting beam is straightly arranged between the bridge body and the placing curved beam, and the problem that the placing curved beam can receive horizontal pulling force besides the downward pulling force due to the inclination of the lifting beam is solved.

2. According to the invention, the rotating semi-ring is driven by the rotating shaft to be clamped with the other opening and closing frame, and a gap exists between the other ends of the fixed semi-ring and the rotating semi-ring, so that when the locking plate and the matching plate are locked by the bolt, the fixed semi-ring and the rotating semi-ring can strongly lock the opening and closing frame, and the rotating plate can preferentially fix the rotating plate and the locking plate by the bolt through a rotatable structure when the locking plate and the matching plate are not fixed well, thereby fixing hole positions of the locking plate and the matching plate. .

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of the present invention

FIG. 2 is a schematic view showing the structure of a reinforcing unit according to the present invention

FIG. 3 is a sectional view taken along line A-A of FIG. 2 according to the present invention

FIG. 4 is a schematic view showing a part of the structure of the connection unit of the present invention

FIG. 5 is a sectional view taken along line B-B of FIG. 4 according to the present invention

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the specific drawings.

As shown in fig. 1 to 5, the large-span steel structure connection node reinforcing and connecting structure comprises a bridge body 1, a placing curved beam 2, a lifting beam 3, a reinforcing unit 4, a connecting unit 5 and a buffer cable 6, wherein the placing curved beam 2 is symmetrically arranged at the front and back of the upper end of the bridge body 1, the connecting unit 5 is uniformly arranged at the upper end of the bridge body 1 from left to right, the lifting beam 3 is arranged at the upper end of the connecting unit 5, the reinforcing unit 4 is uniformly arranged at the lower end of the placing curved beam 2 from left to right along the track direction of the placing curved beam 2, the reinforcing unit 4 is connected with the lifting beam 3 in a clamping manner, and the reinforcing units 4 are connected with each other through the buffer cable 6; the reinforcing units 4 are used for fixedly connecting the placing curved beam 2 with the lifting beam 3, the connecting units 5 are used for fixedly connecting the bridge body 1 with the lifting beam 3, and the buffer cables 6 enable the single reinforcing unit 4 to be dispersed to the plurality of reinforcing units 4 when being stressed, so that the plurality of reinforcing units 4 share the stress together;

the reinforcing unit 4 comprises a clamping seat 41, a threaded column 42, a rotating hand wheel 43, an opening and closing frame 44, a clamping mechanism 45, a sliding block 46, a buffer plate 47 and a fixing mechanism 48, wherein the clamping seat 41 is uniformly arranged at the lower end of the curved beam 2 from left to right along the track direction of the curved beam 2, sliding grooves are symmetrically formed in the left and right of the lower end of the clamping seat 41, the threaded column 42 is arranged on the inner wall of the left end of each sliding groove through a bearing, the rotating hand wheel 43 is arranged at the right end of the threaded column 42, the opening and closing frame 44 is connected with the sliding grooves in a sliding mode, the opening and closing frame 44 is connected with the threaded column 42 in a threaded connection mode, the sliding block 46 is arranged at the lower end of the clamping seat 41 in a sliding fit mode, the buffer plate 47 is arranged at the lower end; screwing the rotating hand wheel 43 to drive the threaded column 42 to rotate, driving the opening and closing frame 44 to be closed inwards through a screw nut structure formed by combining the threaded column 42 and the opening and closing frame 44, enabling the opening and closing frame 44 to be clamped with the lifting beam 3 through an L-shaped structure, fixing the outer wall of the lifting beam 3 through the clamping mechanism 45, driving the buffer plate 47 through the sliding block 46 to extrude the lifting beam 3 downwards, and therefore a gap is prevented between the lifting beam 3 and the inner wall of the lower end of the opening and closing frame 44, the lifting beam 3 cannot impact the opening and closing frame 44 when stressed, and the fixing mechanism 48 reinforces the clamping position of the opening and closing frame 44 and the lifting beam 3 from the outer wall of the opening and closing frame 44.

The clamping mechanism 45 comprises a sliding column 451, a clamping arc plate 452, a clamping spring 453, a rubber pad 454 and a sliding steel bar 455, an empty groove is uniformly formed in the inner end of the opening and closing frame 44 from top to bottom, the sliding column 451 is connected with the empty groove in a sliding mode, the clamping arc plate 452 is arranged at the inner end of the sliding column 451, the outer end of the sliding column 451 is connected with the inner wall of the outer end of the empty groove through the clamping spring 453, the rubber pad 454 is arranged at the inner end of the clamping arc plate 452, and the sliding steel bar 455 is uniformly arranged at the inner end of the rubber pad 454 along the track direction. The clamping spring 453 pushes the clamping arc plate 452 to continuously apply force to the lifting beam 3, thereby reinforcing the fixation of the lifting beam 3, the rubber pad 454 reduces the gap between the clamping arc plate 452 and the lifting beam 3, and the sliding steel bar 455 reduces the friction between the rubber pad 454 and the lifting beam 3.

The connecting unit 5 comprises a connecting seat 51, a fixing plate 52, an auxiliary spring 53, a guide groove 54, a locking arc plate 55 and a locking mechanism 56, wherein the connecting seat 51 is uniformly arranged at the upper end of the bridge body 1 from left to right, the fixing plate 52 is connected with the inner wall of the connecting seat 51 in a sliding mode, the auxiliary spring 53 is arranged at the lower end of the fixing plate 52, the guide grooves 54 are symmetrically arranged at the front and back of the upper end of the connecting seat 51, the locking arc plate 55 is symmetrically connected with the guide groove 54 in a sliding fit mode, and the locking mechanism 56 is arranged at the lower end of the locking arc plate 55; the dead-locking arc plate 55 at one end is pushed, the dead-locking arc plate 55 at the other end is driven to feed inwards together through the dead-locking mechanism 56, so that the dead-locking arc plate 55 centers the lifting beam 3 and is clamped, the fixing plate 52 is pushed upwards by the auxiliary spring 53, and the gap between the connecting seat 51 and the lifting beam 3 is eliminated.

The right end of the opening and closing frame 44 is provided with a threaded through hole, the threaded through hole is connected with the threaded column 42 in a threaded connection mode, and the thread turning direction of the threaded through hole on the left side of the sliding block 46 is opposite to the thread turning direction of the threaded through hole on the right side of the sliding block 46. The threaded through holes with opposite threads allow the opening and closing frame 44 to open and close when the threaded post 42 is rotated.

The fixing mechanism 48 comprises a fixed half ring 481, a rotating half ring 482, a rotating shaft 483, a locking plate 484, a matching plate 485 and a rotating plate 486, wherein the fixed half ring 481 is arranged at the left end of an opening and closing frame 44 positioned at the left side of a sliding block 46, the rotating shaft 483 is arranged between the inner walls of the upper end and the lower end of the fixed half ring 481 through a bearing, the rotating half ring 482 is arranged on the outer wall of the rotating shaft 483, the locking plate 484 is arranged at the right end of the fixed half ring 481, the matching plate 485 is arranged at the left end of the rotating half ring 482, and the rotating. The rotating half ring 482 is driven to be clamped with the other opening and closing frame 44 through the rotating shaft 483, a gap exists between the other ends of the fixed half ring 481 and the rotating half ring 482, so that when the locking plate 484 and the matching plate 485 are locked through bolts, the fixed half ring 481 and the rotating half ring 482 can strongly lock the opening and closing frame 44, and the rotating plate 486 can fix the rotating plate 486 and the locking plate 484 through bolts preferentially through a rotatable structure when the locking plate 484 and the matching plate 485 are not fixed well, so that hole positions of the locking plate 484 and the matching plate 485 are fixed.

Bolt holes are formed in the right ends of the locking plate 484, the matching plate 485 and the rotating plate 486.

The locking mechanism 56 comprises a rack plate 561, a rotating gear 562, a meshing gear 563 and a fixing hole 564, wherein the rack plate 561 is arranged at the lower end of a locking arc plate 55, the rotating gear 562 is arranged on the inner wall of the rear end of the guide groove 54 at the rear side through a bearing, the rotating gear 562 is connected with the rack plate 561 in a meshing mode, the meshing gear 563 is arranged at the rear end of the rotating gear 562, the meshing gear 563 is connected with the meshing gear 563 in a meshing mode, and the fixing hole 564 is formed in the outer end of the locking arc plate 55. The meshing gear 563 is driven to rotate by the meshing of the rack plate 561 and the rotary gear 562, and the meshing gear 563 drives the other meshing gear 563 to rotate in the opposite direction by the meshing method, so that the locking arc plate 55 at the other end is driven to simultaneously feed inwards by the rotary gear 562 and the rack plate 561.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a large-span steel construction connected node adds solid connection structure, includes the pontic (1), settles curved roof beam (2), carries and draws roof beam (3), consolidates unit (4), linkage unit (5) and buffer cable (6), its characterized in that: the upper end of the bridge body (1) is symmetrically provided with mounting curved beams (2) in a front-back manner, the upper end of the bridge body (1) is uniformly provided with connecting units (5) from left to right, the upper end of each connecting unit (5) is provided with a lifting beam (3), reinforcing units (4) are uniformly arranged at the lower ends of the mounting curved beams (2) from left to right along the track direction of the mounting curved beams (2), the reinforcing units (4) are connected with the lifting beams (3) in a clamping manner, and the reinforcing units (4) are connected with each other through buffer cables (6);

the reinforcing unit (4) comprises a clamping seat (41), a threaded column (42), a rotating hand wheel (43), an opening and closing frame (44), a clamping mechanism (45), a sliding block (46), a buffer plate (47) and a fixing mechanism (48), the clamping seat (41) is uniformly arranged at the lower end of the curved beam (2) from left to right along the track direction of the curved beam (2), sliding grooves are symmetrically formed in the left and right of the lower end of the clamping seat (41), the threaded column (42) is arranged on the inner wall of the left end of the sliding groove through a bearing, a rotating hand wheel (43) is arranged at the right end of the threaded column (42), the opening and closing frame (44) is connected with the sliding grooves in a sliding mode, the opening and closing frame (44) is connected with the threaded column (42) in a threaded connection mode, the sliding block (46) is arranged at the lower end of the clamping seat (41) in a sliding fit mode, the lower end of the sliding block (46) is provided with a buffer plate (47), and the fixing mechanism (48) is arranged at the left end;

the clamping mechanism (45) comprises a sliding column (451), a clamping arc plate (452), a clamping spring (453), a rubber pad (454) and a sliding steel bar (455), empty grooves are uniformly formed in the inner end of the opening and closing frame (44) from top to bottom, the sliding column (451) is connected with the empty grooves in a sliding mode, the clamping arc plate (452) is arranged at the inner end of the sliding column (451), the outer end of the sliding column (451) is connected with the inner wall of the outer end of the empty grooves through the clamping spring (453), the rubber pad (454) is arranged at the inner end of the clamping arc plate (452), and the sliding steel bar (455) is uniformly arranged at the inner end of the rubber pad (454) along the track direction of the clamping arc;

the connecting unit (5) include connecting seat (51), fixed plate (52), auxiliary spring (53), guide way (54), the dead arc board of lock (55) and locking mechanism (56), connecting seat (51) turns right from a left side and evenly sets up in pontic (1) upper end, fixed plate (52) are connected with connecting seat (51) inner wall through the slip mode, fixed plate (52) lower extreme is provided with auxiliary spring (53), guide way (54) have been seted up to connecting seat (51) upper end longitudinal symmetry, the dead arc board of lock (55) bilateral symmetry is connected with guide way (54) through the sliding fit mode, the dead arc board of lock (55) lower extreme is provided with locking mechanism (56).

2. The large-span steel structure connecting node reinforcing connection structure of claim 1, wherein: the right end of the opening and closing frame (44) is provided with a threaded through hole, the threaded through hole is connected with the threaded column (42) in a threaded connection mode, and the thread turning direction of the threaded through hole on the left side of the sliding block (46) is opposite to the thread turning direction of the threaded through hole on the right side of the sliding block (46).

3. The large-span steel structure connecting node reinforcing connection structure of claim 1, wherein: fixed establishment (48) including fixed semi-ring (481), rotate semi-ring (482), axis of rotation (483), lockplate (484), cooperation board (485) and rotating plate (486), fixed semi-ring (481) sets up and is being located the left frame (44) left end that opens and shuts of sliding block (46), be provided with axis of rotation (483) through the bearing between the both ends inner wall about fixed semi-ring (481), it sets up on axis of rotation (483) outer wall to rotate semi-ring (482), fixed semi-ring (481) right-hand member is provided with lockplate (484), it is provided with cooperation board (485) to rotate semi-ring (482) left end, cooperation board (485) rear end is provided with rotating plate (486) through the bearing.

4. The large-span steel structure connecting node reinforcing connection structure of claim 3, wherein: bolt holes are formed in the right ends of the locking plate (484), the matching plate (485) and the rotating plate (486).

5. The large-span steel structure connecting node reinforcing connection structure of claim 1, wherein: locking mechanism (56) including rack plate (561), rotating gear (562), meshing gear (563) and fixed orifices (564), rack plate (561) set up at locking arc board (55) lower extreme, be located and be provided with rotating gear (562) through the bearing on guide way (54) rear end inner wall of rear side, rotating gear (562) are connected with rack plate (561) through the meshing mode, rotating gear (562) rear end is provided with meshing gear (563), be connected through the meshing mode between meshing gear (563), fixed orifices (564) have been seted up to locking arc board (55) outer end.