CN115198654A

CN115198654A - Construction method of steel structure bridge

Info

Publication number: CN115198654A
Application number: CN202210864472.6A
Authority: CN
Inventors: 王玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-07-21
Filing date: 2022-07-21
Publication date: 2022-10-18

Abstract

The invention relates to the technical field of bridge construction, in particular to a steel structure bridge construction method, which uses a steel structure bridge construction device and comprises a support frame, a guide unit and an installation unit; the invention can guide and position the bridge strut in multiple directions, so that the bridge strut can move vertically and downwards to be in accurate butt joint with the embedded part; according to the invention, the bolts are screwed into the positioning holes of the flange plates at the tops of the embedded parts through the screwing buckles, so that the assembly and the fixation between the bridge support and the embedded parts are completed, and manual auxiliary installation is not needed.

Description

Construction method of steel structure bridge

Technical Field

The invention relates to the technical field of bridge construction, in particular to a construction method of a steel structure bridge.

Background

In the bridge construction field, steel structure bridge is gradually approved by people, steel structure bridge has with low costs, structural performance is good, construction speed is fast, feel intensity advantage such as good, steel structure bridge is in construction earlier stage, need dig out the foundation ditch on ground, then install the built-in fitting in the foundation ditch, and then fix the bridge strut on the built-in fitting, can carry out firm support to the bottom of bridge through the bridge strut, in order to ensure steel structure bridge's use strength, and can improve steel structure bridge's life.

In the prior art, there are solutions related to bridge strut construction, for example: the Chinese patent with application number 201110413072.5 discloses a steel lattice column butt joint installation device and a construction method, firstly, a pile casing is buried in a foundation pile hole site and a base plate is installed, secondly, an adjusting frame support and an adjusting frame are sequentially placed on the base plate, then a cast-in-place pile reinforcement cage is placed in a middle hole of the base plate, then, a steel lattice column is installed in the reinforcement cage, then, a movable joint and the steel lattice column are installed, a steel beam is installed between the upper surface of the adjusting frame and an upper bracket of the movable joint, the movable joint is placed and fixed, and finally, the perpendicularity of the movable joint and the steel lattice column is detected.

The above-described prior art also has the following problems: 1. the steel reinforcement cage does not obtain spacing rocking easily or the swing at will when transferring, therefore the steel reinforcement cage can take place skew or slope to the opening part at its top takes place the skew thereupon, makes the unable quick placing in the steel reinforcement cage of steel lattice post, and the straightness that hangs down of steel lattice post and steel reinforcement cage receives the influence easily, and then influences the bearing strength in steel lattice post later stage.

2. Above-mentioned patent adopts the mode of lifting by crane to place steel lattice column and loose joint, and steel lattice column and loose joint are the active state transferring its bottom of in-process, can't realize quick accurate butt joint, consequently need the supplementary installation of workman, and the workman probably has the potential safety hazard in supplementary installation.

Disclosure of Invention

In order to solve the problems, the invention provides a steel structure bridge construction method, which uses a steel structure bridge construction device and comprises a support frame, a guide unit and an installation unit, wherein the support frame is of an annular structure.

The guide unit includes locating plate, pivot, guide bar, arc frame and fixed subassembly, wherein: a plurality of locating groups are evenly installed to the interior rampart circumference of support frame, and every locating group includes the locating plate that two symmetries were arranged, all rotates through first torsional spring between two locating plates of every locating group and is provided with the pivot, and it has the guide bar to slide to run through in the pivot, and the arc frame is installed to one side that the guide bar is close to support frame center department, and the inside wall even rotation of arc frame is provided with a plurality of balls, and the interior rampart of support frame still is provided with fixed subassembly.

The installation unit includes annular link, plugboard, annular support section of thick bamboo, linkage gear, drive motor, drive gear, lead screw and revolves the knot tightly, wherein: the top of support frame is rotated through the mounting bracket and is provided with annular link, circumference evenly sets up a plurality ofly on the annular link and the crisscross connecting hole of arranging of location group, it is provided with the plugboard all to slide in every connecting hole, one side top that the plugboard is close to annular link center department rotates and is provided with an annular support section of thick bamboo, linkage gear is installed at the top of an annular support section of thick bamboo, it is provided with the lead screw to run through screw-thread fit's mode on the plugboard, rotate between lead screw and the linkage gear and be connected, the bottom of lead screw is installed and is fastened soon, the plugboard top just is located one side that an annular support section of thick bamboo is close to annular link outer wall and installs driving motor through the motor cabinet, the output shaft pot head of driving motor is equipped with the drive gear that meshes with linkage gear mutually.

When the steel structure bridge construction device is used for bridge construction, the steel structure bridge construction device comprises the following steps:

s1, digging out a foundation pit and placing an embedded part: firstly, digging a foundation pit at a specified position through external equipment, and then placing an embedded part in the foundation pit;

s2, placing bridge pillars: placing bolts in positioning holes in flange plates at the bottoms of the bridge struts, then placing the support frame on the outer side of the upper end of the foundation pit, then placing the bridge struts on the guide units and pressing downwards, guiding the bridge struts into the foundation pit through the guide units, and then butting the bridge struts with the embedded parts;

s3, assembling the bridge support and the embedded part: assembling the bridge support columns and the embedded parts through the mounting units, and limiting the bridge support columns through the guide units during the assembling;

s4, pouring concrete: and pouring concrete into the foundation pit, so that the bridge support and the embedded part are fixed in the foundation pit.

In some embodiments, the adjustable lighting device based on the monitoring application scenario of the embodiments of the present invention includes a fixing assembly, a limiting chute, a displacement plate, a threaded rod, a top-extending spring, a connecting plate, a supporting shaft, a telescopic plate, a connecting rope, and a clamping plate, wherein: a plurality of limiting chutes which are staggered with the positioning groups are uniformly arranged on the inner ring wall of the supporting frame in the circumferential direction, a displacement plate is arranged in the limiting chutes in a sliding manner, a threaded rod is arranged at the bottom of each limiting chute in a rotating manner, the upper side of the threaded rod passes through the supporting frame in a rotating manner, the threaded rod passes through the displacement plate in a threaded fit manner, a jacking spring is connected between the top of the threaded rod and the supporting frame, the jacking spring is sleeved outside the threaded rod, a plurality of clamping groups are uniformly arranged on the inner ring wall of the supporting frame in the circumferential direction, each clamping group comprises two connecting plates which are symmetrically arranged along the limiting chutes, rotate between two connecting plates of every joint group and be provided with the back shaft, the downside that the interior rampart of support frame just is located spacing spout rotates and is provided with the expansion plate, connect rope one end and install the one side that is close to support frame center department at the displacement plate, be connected between the top of the one side of connecting the other end of rope and expansion plate and keeping away from the displacement plate, and the middle part of connecting the rope is taken and is leaned on the top at the back shaft, one side that the support frame was kept away from to the expansion plate just is located the bottom of expansion plate and is installed the chucking board.

As a preferable technical scheme of the invention, the guide rod consists of a first guide rod and a second guide rod, the lower sides of the first guide rod and the second guide rod are rotatably connected through a pin shaft, mounting grooves are formed between the first guide rod and the second guide rod and above the pin shaft, and a magnetic block is arranged in each mounting groove.

According to a preferable technical scheme of the invention, cylindrical grooves are formed in the first guide rod and the second guide rod and above the magnetic block, a winding roller is rotatably arranged in the cylindrical groove of the first guide rod through a second torsion spring, a connecting column is rotatably arranged in the cylindrical groove of the second guide rod, and a rope is connected between the connecting column and the winding roller after the connecting column penetrates through the first guide rod and the second guide rod.

As a preferred technical scheme of the invention, one side of the positioning plate close to the rotating shaft is provided with an arc-shaped sliding groove, the arc-shaped sliding groove is positioned on one side of the rotating shaft close to the outer wall of the supporting frame, one side of the guide rod far away from the arc-shaped frame is symmetrically provided with a sliding groove, a linkage pin which is in sliding butt joint in the arc-shaped sliding groove is installed in the sliding groove, and a supporting spring is connected between the linkage pin and the inner wall of the sliding groove.

As a preferred technical scheme of the invention, the outer wall of the annular connecting frame is provided with an annular sliding groove, an annular plate is rotationally arranged in the annular sliding groove, the upper end of the annular plate is provided with an annular threaded disc, and the bottom of the plug board is provided with a threaded groove matched with the annular threaded disc.

As a preferred technical solution of the present invention, the outer wall of the lead screw is symmetrically provided with two guide chutes, the inner annular wall of the linkage gear is symmetrically provided with two sliding blocks, and the sliding blocks are in sliding butt joint in the guide chutes.

As a preferable technical scheme of the invention, the bottom of the support frame is uniformly provided with a plurality of gear shaping teeth in an adjustable mode along the circumferential direction, and one side of the gear shaping teeth, which is far away from the support frame, is of a conical structure.

The invention has the beneficial effects that: 1. the guide unit provided by the invention can guide the bridge support columns through the guide rods, and can limit the bridge support columns in multiple directions through the guide rods and the arc-shaped frame, so that the bridge support columns are in a vertical state, and the bridge support columns can move vertically and downwards to be in butt joint with the embedded parts conveniently; the installation unit provided by the invention can be accurately clamped and sleeved at the top of the bolt of the flange plate at the bottom of the bridge strut through the screwing buckle, and then the screwing buckle is driven by the lead screw to rotate while moving downwards so as to be convenient for screwing the bolt into the positioning hole of the flange plate at the top of the embedded part, thereby completing the assembly and fixation between the bridge strut and the embedded part, and being convenient and fast to operate and free of potential safety hazards.

2. The first guide rod provided by the invention can guide the bridge support, and the second guide rod can limit the flange at the bottom of the bridge support, so that the flange at the bottom of the bridge support is always positioned at the center of the foundation pit in the downward movement process, and the bridge support and the embedded part can be accurately butted.

3. The fixing assembly provided by the invention is abutted against the inner wall of the upper side of the foundation pit through the plurality of clamping plates, can limit the supporting frame, and can finely adjust the position of the supporting frame so as to ensure the accuracy of butt joint of the bridge strut and the embedded part.

4. The support frame can provide upward supporting force for the support frame by inserting the gear shaping into the ground, can limit and fix the support frame, and avoids the influence on the construction efficiency caused by shaking of the support frame in the working process.

Drawings

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

FIG. 1 is a process flow diagram of the present invention.

Fig. 2 is an operating state diagram of the present invention.

Fig. 3 is a schematic perspective view of the present invention.

Fig. 4 is a top view of the present invention.

Fig. 5 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 4 in accordance with the present invention.

Fig. 6 is a schematic perspective view of the support frame and the guide unit of the present invention.

Fig. 7 is a sectional view taken along line B-B of fig. 4 in accordance with the present invention.

Fig. 8 is a perspective view of the rotating shaft, the guide bar and the arc frame of the present invention.

Fig. 9 is a partial enlarged view of the invention at D of fig. 8.

Fig. 10 is a partial enlarged view of the invention at S of fig. 6.

Fig. 11 is an initial state diagram of the securing assembly of the present invention.

Fig. 12 is a cut-away view of the mounting unit of the present invention.

Fig. 13 is a partial enlarged view at G of fig. 12 of the present invention.

Fig. 14 is a partial enlarged view of fig. 12 at E of the present invention.

In the figure: 1. a support frame; 11. gear shaping; 2. a guide unit; 21. positioning a plate; 211. an arc-shaped chute; 212. a linkage pin; 213. a support spring; 22. a rotating shaft; 23. a guide rod; 231. a first guide rod; 232. a second guide rod; 233. a magnetic block; 234. a winding roller; 235. connecting columns; 236. a rope; 24. an arc-shaped frame; 25. a fixing component; 251. a limiting chute; 252. a displacement plate; 253. a threaded rod; 254. a top extension spring; 255. a connecting plate; 256. a support shaft; 257. a retractable plate; 258. connecting ropes; 259. a chucking plate; 3. a mounting unit; 31. an annular connecting frame; 311. an annular plate; 312. an annular threaded disc; 32. a plugboard; 33. an annular support cylinder; 34. a linkage gear; 341. a sliding block; 35. a drive motor; 36. a drive gear; 37. a lead screw; 38. screwing and fastening; 5. a bridge strut; 6. and (6) embedding parts.

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. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

A construction method of a steel-structure bridge according to an embodiment of the present invention will be described below with reference to the accompanying drawings. Referring to fig. 2, 3, 4 and 5, a steel structure bridge construction method using a steel structure bridge construction apparatus includes a support frame 1, a guide unit 2 and a mounting unit 3, wherein the support frame 1 is an annular structure; the bottom of the support frame 1 is uniformly provided with a plurality of gear shaping teeth 11 in an adjustable mode along the circumferential direction of the support frame, and one side of each gear shaping tooth 11, which is far away from the support frame 1, is of a conical structure; when the support frame 1 is placed on the outer side of the upper end of a foundation pit, the gear shaping teeth 11 are adjusted to move downwards and are inserted into the ground, so that upward supporting force can be provided for the support frame 1 through the gear shaping teeth 11, the support frame 1 can be limited and fixed, and the support frame 1 is prevented from shaking in the working process to influence the construction efficiency; in addition, the support frame 1 is a splicing structure capable of being disassembled quickly, and after the bridge strut 5 and the embedded part 6 are assembled, the support frame 1 is disassembled so that the support frame 1 can be conveniently moved out of a foundation pit.

Referring to fig. 6, 7 and 8, the guide unit 2 includes a positioning plate 21, a rotation shaft 22, a guide rod 23, an arc-shaped frame 24 and a fixing assembly 25, wherein: a plurality of positioning groups are uniformly arranged on the inner annular wall of the support frame 1 in the circumferential direction, each positioning group comprises two positioning plates 21 which are symmetrically arranged, a rotating shaft 22 is arranged between the two positioning plates 21 of each positioning group in a rotating manner through a first torsion spring, a guide rod 23 penetrates through the rotating shaft 22 in a sliding manner, an arc-shaped sliding groove 211 is formed in one side, close to the rotating shaft 22, of each positioning plate 21, the arc-shaped sliding groove 211 is located in one side, close to the outer wall of the support frame 1, of the rotating shaft 22, a sliding groove is symmetrically formed in one side, far away from the arc-shaped frame 24, of each guide rod 23, a linkage pin 212 which is in sliding butt joint in the arc-shaped sliding groove 211 is arranged in the sliding groove in a sliding manner, a support spring 213 is connected between the linkage pin 212 and the inner wall of the sliding groove, and the support spring 213 always applies extrusion force to the linkage pin 212, wherein the extrusion force moves towards one side, far away from the center of the support frame 1; an arc-shaped frame 24 is installed on one side, close to the center of the support frame 1, of the guide rod 23, a plurality of balls are uniformly arranged on the inner side wall of the arc-shaped frame 24 in a rotating mode, friction between the guide rod 23 and the bridge support post 5 can be reduced through the balls, so that the bridge support post 5 can move downwards and rotate conveniently, the guide rod 23 is flush with the upper side wall and the lower side wall of the arc-shaped frame 24, when the guide rod 23 guides the bridge support post 5, the arc-shaped frame 24 can also guide the bridge support post 5 and cannot cause interference to the bridge support post 5 in the downward movement process, and a fixing assembly 25 is further arranged on the inner ring wall of the support frame 1; in an initial state, the first torsion spring always applies a torsional force to the rotating shaft 22, so that the guide rod 23 drives the arc-shaped frame 24 to rotate upwards under the action of the rotating shaft 22, the guide rod 23 drives the linkage pin 212 to abut against the lower side wall of the arc-shaped sliding groove 211, the guide rod 23 is in a horizontal state (as shown in fig. 6), and when the bridge strut 5 is placed on the guide rods 23, the guide rods 23 can simultaneously apply an upward supporting force to the bridge strut 5.

During operation, at first dig out the foundation ditch at the assigned position through outside equipment, place built-in fitting 6 in the foundation ditch again, all place the bolt in a plurality of locating holes of bridge pillar 5 bottom ring flange afterwards, then place support frame 1 in the upper end outside of foundation ditch, place bridge pillar 5 on a plurality of guide bars 23 and press down afterwards, guide bar 23 is close to the one side atress and the downwardly rotating of support frame 1 center department this moment, make a plurality of guide bars 23 be the slope state and support and lean on the edge at the foundation ditch, can lead bridge pillar 5 through the guide bar 23 that inclines, make bridge pillar 5 can vertically move down to the foundation ditch in and support at the top that leans on built-in fitting 6, after the ring flange of bridge pillar 5 bottom passes a plurality of guide bars 23, pivot 22 drives guide bar 23 and resets to the horizontal state under the effect of first torsional spring, this moment interlocking pin 212 is in relative quiescent condition, and the interlocking pin 212 drives guide bar 23 through support spring 213 and moves to one side that is close to bridge pillar 5, thereby guide bar 23 drives arc frame 24 and supports and leans on the arc frame 5 and the inboard bolt 5, make bridge pillar 5 and the multi-azimuth rotation of bridge pillar 5, thereby make the bridge pillar 5 and the butt joint bolt 5 and the multi-point of bridge pillar 5 and the multi-point rotation of bridge pillar 5.

Referring to fig. 7, 8 and 9, the guide rod 23 is composed of a first guide rod 231 and a second guide rod 232, the lower sides of the first guide rod 231 and the second guide rod 232 are rotatably connected through a pin shaft, mounting grooves are formed between the first guide rod 231 and the second guide rod 232 and above the pin shaft, and a magnetic block 233 is arranged in each mounting groove; cylindrical grooves are formed in the first guide rod 231 and the second guide rod 232 and above the magnetic block 233, a winding roller 234 is rotatably arranged in the cylindrical groove of the first guide rod 231 through a second torsion spring, a connecting column 235 is rotatably arranged in the cylindrical groove of the second guide rod 232, and a rope 236 is connected between the connecting column 235 and the winding roller 234 after penetrating through the first guide rod 231 and the second guide rod 232; the second torsional spring exerts the turning force to the winding roller 234 all the time for the winding roller 234 has anticlockwise rotation's torque all the time, thereby the winding roller 234 drives between second guide rod 232 and the first guide rod 231 counterbalance through rope 236 cooperation spliced pole 235, thereby it forms diversified support to form to the bottom of bridge strut 5 thereby a plurality of member bars of first guide rod 231 and second guide rod 232 (as shown in fig. 8), and then be convenient for lead bridge strut 5.

When the bridge strut 5 works, when the bridge strut 5 abuts against the first guide rod 231, the first guide rod 231 and the second guide rod 232 are driven to rotate downwards at one side close to the center of the support frame 1, at the moment, the joint of the first guide rod 231 and the second guide rod 232 abuts against the edge of a foundation pit, then, the bridge strut 5 is continuously pressed downwards, the flange at the bottom of the bridge strut 5 applies extrusion force to the second guide rod 232, the second guide rod 232 is stressed to rotate downwards and abuts against the inner wall of the foundation pit, and therefore the flange at the bottom of the bridge strut 5 can be limited through the second guide rod 232 (as shown in fig. 7), so that the flange at the bottom of the bridge strut 5 is always located at the center of the foundation pit in the downward movement process, and the bridge strut 5 is in butt joint with the embedded part 6; after the bridge strut 5 abuts against the embedded part 6, the flange plate at the bottom of the bridge strut 5 is not in contact with the second guide rod 232 any more, at the moment, the winding roller 234 withdraws the rope 236 under the action of the second torsion spring, so that the second guide rod 232 rotates upwards and recovers to be an integral rod piece with the first guide rod 231, at the moment, the magnetic block 233 on the first guide rod 231 is attracted to the magnetic block 233 on the second guide rod 232, the connection between the first guide rod 231 and the second guide rod 232 is ensured to be more stable, and the first guide rod 231 and the second guide rod 232 are convenient to limit the bridge strut 5.

Referring to fig. 10 and 11, the fixing assembly 25 includes a limit chute 251, a displacement plate 252, a threaded rod 253, a top extension spring 254, a connection plate 255, a support shaft 256, a telescopic plate 257, a connection rope 258, and a chucking plate 259, wherein: a plurality of limiting sliding grooves 251 which are distributed in a staggered manner with the positioning groups are uniformly formed in the circumferential direction of the inner ring wall of the support frame 1, a displacement plate 252 is arranged in the limiting sliding grooves 251 in a sliding manner, a threaded rod 253 is arranged at the bottom of the limiting sliding grooves 251 in a rotating manner, the upper side of the threaded rod 253 penetrates through the support frame 1 in a rotating manner, the threaded rod 253 penetrates through the displacement plate 252 in a threaded fit manner, a top extension spring 254 is connected between the top of the threaded rod 253 and the support frame 1, the top extension spring 254 is sleeved outside the threaded rod 253, a plurality of clamping groups are uniformly arranged in the circumferential direction of the inner ring wall of the support frame 1, each clamping group comprises two connecting plates 255 symmetrically arranged along the limiting sliding grooves 251, a support shaft 256 is arranged between the two connecting plates 255 in each clamping group in a rotating manner, a telescopic plate 257 is arranged on the inner ring wall of the support frame 1 and is arranged on the lower side of the limiting sliding grooves 251 in a rotating manner, the telescopic plate 257 can contract under the external force, the elastic action of the telescopic plate 257 without the external force, one end of the telescopic plate 258 is arranged on one side of the displacement plate 252 close to the center of the support frame 1, the telescopic plate 257, the other end of the connecting rope 258 is connected with the top of the telescopic plate 259, and the telescopic plate 257 far away from the telescopic plate 257 of the telescopic plate 257; in an initial state, the displacement plate 252 is located at the bottom of the limiting sliding groove 251, at this time, the displacement plate 252 drives the retractable plate 257 and the ground to keep a certain angle through the connecting rope 258, at this time, the retractable plate 257 is in a retracted state, and a certain distance is kept between the clamping plate 259 and the ground (as shown in fig. 11); it should be noted that the top extension spring 254 always applies an upward top extension force to the threaded rod 253, so that the friction force of the threaded fit between the threaded rod 253 and the support frame 1 can be increased, and further the threaded rod 253 is prevented from rotating randomly, so that the displacement plate 252 can be prevented from sliding along the limiting sliding groove 251 at will, and further the states of the expansion plate 257 and the clamping plate 259 are locked.

During operation, after the support frame 1 is placed at a designated position, the threaded rod 253 is rotated, the threaded rod 253 rotates and simultaneously drives the displacement plate 252 to slide upwards along the limiting sliding groove 251, so that the connecting rope 258 loses the tensile force of the displacement plate 252, the telescopic plate 257 loses the tensile force of the connecting rope 258 and extends, and then the telescopic plate 257 drives the clamping plate 259 to abut against the inner wall of the upper side of a foundation pit under the action of gravity, so that the support frame 1 can be limited through the plurality of clamping plates 259, the position of the support frame 1 can be finely adjusted, and then the support frame 1 is inserted into the ground through the inserted teeth 11 to limit and fix the support frame 1, so that the accuracy of the butt joint of the bridge strut 5 and the embedded part 6 is ensured; after the bridge strut 5 and the embedded part 6 are butted, the threaded rod 253 is rotated reversely, so that the displacement plate 252 moves downwards and drives the telescopic plate 257 and the clamping plate 259 to return to the initial state through the connecting rope 258.

Referring to fig. 3, 12, 13 and 14, the mounting unit 3 includes an annular connecting frame 31, an inserting plate 32, an annular supporting cylinder 33, a linkage gear 34, a transmission motor 35, a driving gear 36, a lead screw 37 and a tightening buckle 38, wherein: the top of the support frame 1 is rotatably provided with an annular connecting frame 31 through a mounting frame, a plurality of connecting holes which are distributed in a staggered manner with the positioning group are uniformly formed in the annular connecting frame 31 in the circumferential direction, an inserting plate 32 is arranged in each connecting hole in a sliding manner, the outer wall of the annular connecting frame 31 is provided with an annular sliding groove, an annular plate 311 is rotatably arranged in the annular sliding groove, the upper end of the annular plate 311 is provided with an annular threaded disc 312, and the bottom of the inserting plate 32 is provided with a threaded groove matched with the annular threaded disc 312; an annular supporting cylinder 33 is rotatably arranged at the top of one side of the insertion plate 32 close to the center of the annular connecting frame 31, a linkage gear 34 is mounted at the top of the annular supporting cylinder 33, a lead screw 37 is arranged on the insertion plate 32 in a penetrating manner in a threaded fit manner, the lead screw 37 is rotatably connected with the linkage gear 34, two guide sliding grooves are symmetrically formed in the outer wall of the lead screw 37, two sliding blocks 341 are symmetrically arranged on the inner annular wall of the linkage gear 34, and the sliding blocks 341 are in sliding butt joint in the guide sliding grooves; in the rotation process of the linkage gear 34, the linkage gear 34 drives the screw rod 37 to rotate through the matching between the sliding block 341 and the sliding chute, the screw rod 37 can conveniently move up and down along the sliding block 341, the bottom of the screw rod 37 is provided with a screwing buckle 38, one side of the top of the insertion plate 32, which is positioned at the outer wall of the annular support cylinder 33 and close to the annular connecting frame 31, is provided with a transmission motor 35 through a motor base, and the upper end of an output shaft of the transmission motor 35 is sleeved with a driving gear 36 meshed with the linkage gear 34; in this embodiment, the annular connecting frame 31, the annular plate 311 and the annular threaded disc 312 are all splicing structures which can be rapidly disassembled and matched with the supporting frame 1, so as to be rapidly removed from the foundation pit; in addition, an expansion spring rod (not shown in the figure) is connected between the bottom of the screw 37 and the top of the tightening buckle 38, the tightening buckle 38 cannot be accurately clamped on the top of the bolt of the flange plate at the bottom of the bridge strut 5 during the downward movement, and the tightening buckle 38 can still rotate during the downward movement, so that the position of the tightening buckle 38 can be adjusted in a rotating manner, the tightening buckle 38 can be moved out of the way through the expansion spring rod, the phenomenon that the tightening buckle 38 is not clamped on the top of the bolt of the flange plate at the bottom of the bridge strut 5 and is clamped is avoided, and the accurate clamping of the tightening buckle 38 on the top of the bolt can be ensured.

During operation, after the bridge strut 5 and the embedded part 6 are in butt joint, the annular connecting frame 31 is rotated, the annular connecting frame 31 drives the plugboard 32 to rotate to the position above the bolts of the flange plate at the bottom of the bridge strut 5, so that the plugboard 32 corresponds to the bolts, then the annular threaded disc 312 is rotated through the annular plate 311, the annular threaded disc 312 drives the plugboard 32 to move towards one side close to the center of the support frame 1 during rotation, the annular support cylinder 33, the transmission motor 35 and the lead screw 37 move along with the plugboard 32, so that the axis of the lead screw 37 coincides with the axis of the bolts of the flange plate at the bottom of the bridge strut 5, then the transmission motor 35 is opened, the transmission motor 35 drives the drive gear 36 to rotate, the drive gear 36 drives the lead screw 37 to rotate through the linkage gear 34, the lead screw 37 rotates and moves downwards under the action of the plugboard 32, so that the lead screw 37 drives the screwing buckle 38 to be clamped at the top of the flange plate at the bottom of the bridge strut 5, and then the lead screw 37 drives the bolts to be screwed into the positioning hole of the flange plate at the top of the embedded part 6, so as to complete the assembly and the fixation between the bridge strut 5 and the embedded part 6; after the bridge strut 5 and the embedded part 6 are fixed, the transmission motor 35 drives the driving gear 36 to rotate reversely, and the driving gear 36 drives the screw rod 37 to rotate reversely and reset upwards through the linkage gear 34, so that the support frame 1 can be moved out of the foundation pit.

Referring to fig. 1, when the steel structure bridge construction device is used for bridge construction, the steel structure bridge construction device comprises the following steps:

s1, digging out a foundation pit, and placing an embedded part 6: firstly, digging a foundation pit at a designated position through external equipment, and then placing an embedded part 6 in the foundation pit.

S2, placing bridge pillars 5: all place the bolt in a plurality of locating holes of 5 bottom ring flanges of bridge strut, place support frame 1 in the upper end outside of foundation ditch again, then support and lean on the upside inner wall at the foundation ditch through chucking plate 259, so that a plurality of chucking plates 259 can adjust the position of support frame 1, place bridge strut 5 on a plurality of guide bars 23 and press down afterwards, lead bridge strut 5 through guide bar 23, make the vertical downstream of bridge strut 5 support the top of leaning on in the foundation ditch and leaning on built-in fitting 6, then carry out diversified spacing to bridge strut 5 through arc frame 24, make the vertical downstream of bridge strut 5 and dock with built-in fitting 6, rotate bridge strut 5 afterwards, make a plurality of bolts on bridge strut 5 all support and lean on in the locating hole of the 6 top ring flanges of built-in fitting, thereby can confirm that bridge strut 5 and built-in fitting 6 accomplish the butt joint.

S3, assembling the bridge support 5 and the embedded part 6: after the bridge strut 5 and the embedded part 6 are butted, the arc-shaped frame 24 is driven by the guide rod 23 to limit the bridge strut 5 in multiple directions, so that the bridge strut 5 is in a vertical state, the position of the insertion plate 32 is adjusted by rotating the annular connecting frame 31, then the insertion plate 32 drives the screw 37 to move to the position above the bolt of the flange plate at the bottom of the bridge strut 5, then the transmission motor 35 is turned on, the transmission motor 35 drives the screw 37 to rotate by matching the driving gear 36 and the linkage gear 34, the screw 37 rotates and moves downwards under the action of the insertion plate 32, so that the screw 37 drives the screwing buckle 38 to be clamped at the top of the bolt of the flange plate at the bottom of the bridge strut 5, and then the screw 37 drives the bolt to be screwed into the positioning hole of the flange plate at the top of the embedded part 6 by the screwing buckle 38, so that the assembly and the fixation between the bridge strut 5 and the embedded part 6 are completed.

S4, pouring concrete: after the bridge strut 5 and the embedded part 6 are assembled, the transmission motor 35 drives the screw rod 37 to rotate reversely and reset upwards through the driving gear 36 and the linkage gear 34, so that the support frame 1 is moved out of the foundation pit, then the clamping plate 259 is reset, and concrete is poured into the foundation pit, so that the bridge strut 5 and the embedded part 6 are fixed in the foundation pit.

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. A steel structure bridge construction method uses a steel structure bridge construction device, and is characterized by comprising the following steps:

the supporting frame (1), the supporting frame (1) is of an annular structure;

guiding unit (2), guiding unit (2) include locating plate (21), pivot (22), guide bar (23), arc frame (24) and fixed subassembly (25), wherein: a plurality of positioning groups are uniformly arranged on the inner annular wall of the support frame (1) in the circumferential direction, each positioning group comprises two positioning plates (21) which are symmetrically arranged, a rotating shaft (22) is arranged between the two positioning plates (21) of each positioning group in a rotating manner through a first torsion spring, a guide rod (23) penetrates through the rotating shaft (22) in a sliding manner, an arc-shaped frame (24) is arranged on one side, close to the center of the support frame (1), of the guide rod (23), a plurality of balls are uniformly arranged on the inner side wall of the arc-shaped frame (24) in a rotating manner, and a fixing assembly (25) is further arranged on the inner annular wall of the support frame (1);

installation element (3), installation element (3) include annular link (31), plugboard (32), annular support section of thick bamboo (33), linked gear (34), driving motor (35), drive gear (36), lead screw (37) and screw and detain (38), wherein: the top of the support frame (1) is rotatably provided with an annular connecting frame (31) through a mounting frame, a plurality of connecting holes which are staggered with the positioning group are uniformly formed in the annular connecting frame (31) in the circumferential direction, an inserting plate (32) is arranged in each connecting hole in a sliding mode, the top of one side, close to the center of the annular connecting frame (31), of the inserting plate (32) is rotatably provided with an annular supporting cylinder (33), a linkage gear (34) is installed at the top of the annular supporting cylinder (33), a lead screw (37) penetrates through the inserting plate (32) in a threaded fit mode, the lead screw (37) is rotatably connected with the linkage gear (34), a screwing buckle (38) is installed at the bottom of the lead screw (37), a transmission motor (35) is installed at the top of the inserting plate (32) and on one side, close to the outer wall of the annular supporting cylinder (33), through a motor seat, and a driving gear (36) meshed with the linkage gear (34) is sleeved at the upper end of an output shaft of the transmission motor (35);

s1, digging out a foundation pit and placing an embedded part: firstly, digging a foundation pit at a designated position through external equipment, and then placing an embedded part (4) in the foundation pit;

s2, placing bridge pillars: placing bolts in positioning holes in flange plates at the bottoms of bridge struts (5), then placing a support frame (1) on the outer side of the upper end of a foundation pit, placing the bridge struts (5) on a guide unit (2) and pressing downwards, guiding the bridge struts (5) into the foundation pit through the guide unit (2), and then butting the bridge struts (5) with embedded parts (4);

s3, assembling the bridge support and the embedded part: assembling the bridge support columns (5) and the embedded parts (4) through the mounting units (3), and limiting the bridge support columns (5) through the guide units (2) in the process;

s4, pouring concrete: and pouring concrete into the foundation pit, so that the bridge strut (5) and the embedded part (4) are fixed in the foundation pit.

2. The construction method of the steel structure bridge according to claim 1, characterized in that: fixed subassembly (25) include spacing spout (251), displacement board (252), threaded rod (253), top extension spring (254), connecting plate (255), back shaft (256), expansion plate (257), connect rope (258) and chucking board (259), wherein: a plurality of limiting sliding grooves (251) which are staggered with the positioning groups are uniformly formed in the circumferential direction of the inner ring wall of the support frame (1), a displacement plate (252) is arranged in the limiting sliding grooves (251) in a sliding manner, a threaded rod (253) is rotatably arranged at the bottom of the limiting sliding grooves (251), the upper side of the threaded rod (253) rotatably penetrates through the support frame (1), the threaded rod (253) penetrates through the displacement plate (252) in a threaded fit manner, a jacking spring (254) is connected between the top of the threaded rod (253) and the support frame (1), the jacking spring (254) is sleeved outside the threaded rod (253), a plurality of clamping groups are uniformly arranged in the circumferential direction of the inner ring wall of the support frame (1), every joint group all includes two connecting plates (255) that set up along spacing spout (251) symmetry, it is provided with back shaft (256) to rotate between two connecting plates (255) in every joint group, the interior rampart of support frame (1) just is located the downside rotation of spacing spout (251) and is provided with expansion plate (257), connect rope (258) one end and install in one side that displacement plate (252) are close to support frame (1) center department, the other end of connecting rope (258) is connected between the top of one side of displacement plate (252) is kept away from with expansion plate (257), and the middle part of connecting rope (258) is taken and is leaned on the top at back shaft (256), one side of support frame (1) is kept away from in expansion plate (257) and is located the top of expansion plate (257), expansion plate (257) are kept away from one side of support frame (1) and are located expansion plate (257) The bottom is provided with a clamping plate (259).

3. The construction method of the steel structure bridge according to claim 1, characterized in that: guide bar (23) comprise first guide bar (231) and second guide bar (232), rotate through the round pin axle between the downside of first guide bar (231) and second guide bar (232) and be connected, and the mounting groove has all been seted up between first guide bar (231) and second guide bar (232) and to be located the top of round pin axle, all is provided with magnetic path (233) in every mounting groove.

4. The construction method of the steel structure bridge according to claim 3, characterized in that: the inside of first guide bar (231) and second guide bar (232) and the top that is located magnetic path (233) have all seted up the post groove, the post inslot of first guide bar (231) is provided with through the rotation of second torsional spring and is coiled roller (234), the post inslot rotation of second guide bar (232) is provided with spliced pole (235), even be connected with rope (236) after passing first guide bar (231) and second guide bar (232) between spliced pole (235) and coiling roller (234).

5. The construction method of the steel structure bridge according to claim 1, wherein: arc spout (211) have been seted up to one side that locating plate (21) are close to pivot (22), and arc spout (211) are located pivot (22) and are close to one side of support frame (1) outer wall, and the sliding tray has been seted up to one side symmetry that arc frame (24) were kept away from in guide bar (23), and slidable mounting has the linkage round pin (212) of slip butt joint in arc spout (211) in the sliding tray, and is connected with supporting spring (213) between the inner wall of linkage round pin (212) and sliding tray.

6. The construction method of the steel structure bridge according to claim 1, wherein: the outer wall of the annular connecting frame (31) is provided with an annular sliding groove, an annular plate (311) is rotationally arranged in the annular sliding groove, the upper end of the annular plate (311) is provided with an annular threaded disc (312), and the bottom of the plug board (32) is provided with a threaded groove matched with the annular threaded disc (312).

7. The construction method of the steel structure bridge according to claim 1, characterized in that: two guide sliding grooves are symmetrically formed in the outer wall of the lead screw (37), two sliding blocks (341) are symmetrically arranged on the inner annular wall of the linkage gear (34), and the sliding blocks (341) are in sliding butt joint in the guide sliding grooves.

8. The construction method of the steel structure bridge according to claim 1, wherein: the bottom of support frame (1) is through adjustable mode and evenly be provided with a plurality of gear shaping (11) along its circumference, and one side of keeping away from support frame (1) of gear shaping (11) is the toper structure.