CN116876350A - Bridge arch rib erection method and equipment - Google Patents

Abstract

The invention provides a bridge arch rib erection method and equipment, and relates to the technical field of bridge construction. When the arch rib erection method of the tingling bridge needs to carry out horizontal splicing on the arch rib, the two bridge deck cranes positioned on the midspan bridge deck of the bridge body are utilized to carry out horizontal splicing on the arch rib, so that the defect that the arch rib needs to be transported to the bridge body after horizontal splicing on a preset horizontal splicing site is avoided, the horizontal splicing transportation time of the arch rib is effectively shortened, and the construction efficiency is improved; after the horizontal splicing of the arch rib is completed, the lifting assembly connected with the arch rib in a driving manner and the arch leg at the end part of the arch rib can be erected through driving the bridge deck crane, the arch rib is driven to move upwards through the lifting assembly to complete the butt joint and closure of the arch rib and the arch leg, the process of synchronous control when the arch rib is subjected to vertical rotation operation is avoided through a vertical lifting manner, and meanwhile, the closure connection part of the arch rib and the arch leg is positioned at the end part of the lowest part of the arch rib, so that the construction efficiency, the construction quality and the construction safety coefficient of the whole erection and installation process of the arch rib are effectively promoted.

Description

Bridge arch rib erection method and equipment

Technical Field

The invention relates to the technical field of bridge construction, in particular to a bridge arch rib erection method and equipment.

Background

In bridge construction, the arch rib of bridge plays vital effect to the holistic structural stability of bridge, and the arch rib of bridge is arc structure, and is bulky, need hoist and mount respectively to the design position after assembling by sections, carries out fixed mounting again.

At present, the existing arch rib erection generally adopts a vertically-rotated installation scheme, namely, two sections of arch ribs which are horizontally spliced in advance are transported to the bridge deck of a bridge body, the arch ribs are connected through a vertically-rotated stay rope, and tension is output to the arch ribs, so that the arch ribs rotate around the connection supporting points of the arch ribs and arch legs, the rotation directions of the two sections of arch ribs are opposite, the two sections of arch ribs are folded at a high position, and the arch rib erection is completed.

Such arch rib installation scheme for the arch rib needs to crouch in advance to splice, occupies great crouch and splice the place, and on transporting the bridge again, whole process efficiency is lower, and to the installation scheme of erectting the commentaries on classics, erects to change the cable and be multiple spot anchor with the arch rib moreover and be connected, erects to change the cable force of cable and the perpendicular rotational speed degree of arch rib and carry out synchronous control comparatively difficultly, and the windfastness is relatively poor in the perpendicular in-process, and the joint of folding of two sections arch ribs is located the highest point of whole arch rib, and the control degree of difficulty of folding is higher, and efficiency of construction, construction quality and construction factor of safety are lower.

Disclosure of Invention

The invention solves the problem of how to improve the construction quality and the construction safety coefficient while ensuring the construction efficiency of the erection and installation of the arch rib.

To solve the above problems, in one aspect, the present invention provides a bridge arch rib erection method for completing erection of an arch rib of a bridge by a bridge arch rib erection apparatus, the bridge including a bridge body, an arch rib and an arch foot, the bridge arch rib erection apparatus including a bridge deck crane and a lifting assembly, the bridge arch rib erection method comprising:

driving two bridge deck cranes positioned at the midspan position of the bridge body to move oppositely along the length direction of the bridge body, and horizontally splicing the arch ribs between the two bridge deck cranes;

after the horizontal splicing of the arch ribs is completed, driving the bridge deck crane to erect the lifting assembly, wherein the lifting assembly is used for driving connection with the arch ribs after the horizontal splicing is completed;

driving the bridge deck crane to continuously move in opposite directions, and erecting and installing the arch springing at two ends of the arch rib in the length direction through the bridge deck crane;

after the erection of the arch springing is completed, the arch rib is driven to move upwards through the lifting assembly, and the arch rib after being lifted in place is folded and connected with the arch springing, so that the erection of the arch rib is completed.

Compared with the prior art, the bridge arch rib erection method has the beneficial effects that: when the arch rib needs to be horizontally spliced, firstly, the two bridge deck cranes positioned on the midspan bridge deck of the bridge body after the bridge body is folded, namely, the two bridge deck cranes are converged on the midspan bridge deck after the bridge body is folded, the two bridge deck cranes move in opposite directions, and simultaneously, the horizontal splicing of the arch rib is carried out between the two bridge deck cranes while the two bridge deck cranes move in opposite directions, the bridge deck space of the bridge body is utilized to complete the horizontal splicing of the arch rib, and the subsequent process of erection and installation can be carried out after the horizontal splicing is completed, so that the defect that the arch rib needs to be transported to the bridge body after the horizontal splicing of the arch rib is carried out in a preset horizontal splicing field is avoided, the horizontal splicing transportation time of the arch rib is effectively shortened, and the construction efficiency is improved; secondly, after the horizontal splicing of the arch ribs is completed, a lifting assembly connected with the arch ribs in a driving way can be erected by driving the bridge deck crane, so that the subsequent lifting operation of the arch ribs is facilitated, after the erection of the lifting assembly is completed, the bridge deck crane continues to move, arch feet can be respectively erected at the two ends of the bridge deck in the length direction of the arch ribs, so that the subsequent lifting of the arch ribs is facilitated, and the bridge deck crane is in butt joint folding connection with the arch ribs to complete the installation and erection of the arch ribs; finally, after the erection and installation of the arch rib are completed, the arch rib can be driven to move upwards through the lifting assembly, the arch rib gradually moves upwards, the end part of the arch rib is gradually close to the end part of the arch rib, the arch rib is folded and connected with the arch rib until the arch rib moves upwards to be aligned with the arch rib, the erection and installation of the arch rib can be completed, the direction and the lifting speed of the lifting force output by the lifting assembly on the arch rib can be kept unchanged in the upward lifting process of the arch rib, the process of synchronous control during the vertical rotation operation of the arch rib is avoided, the control of the whole lifting process is simpler, the lifting direction is kept unchanged, the stability of the arch rib in the lifting process is guaranteed, the safety of the lifting process is improved, meanwhile, the folding connection position of the arch rib and the arch rib is located at the end part of the lowest part of the arch rib, the folding position is lower, the butt joint folding process is convenient to control in the folding process, the butt joint precision and the folding stability are higher, and the construction efficiency, construction quality and safety coefficient of the whole erection and installation process of the arch rib are effectively improved.

Optionally, the bridge arch rib erection device further comprises an arch rib bracket, wherein the arch rib is formed by sequentially connecting a plurality of arch rib sections;

driving two bridge deck cranes located at the bridge body midspan position to move oppositely along the length direction of the bridge body, and horizontally splicing the arch ribs between the two bridge deck cranes, wherein the bridge deck crane comprises:

driving the bridge deck cranes to erect and install a plurality of arch rib brackets at intervals between the two bridge deck cranes;

after the erection and installation of one arch rib bracket are completed, erecting and installing the arch rib sections on the arch rib bracket, and after the erection and installation of the arch rib sections on the adjacent arch rib brackets are completed, connecting the adjacent two arch rib sections;

and when the erection and installation of all the arch rib brackets are completed, all the arch rib sections are sequentially connected to form the arch ribs.

Optionally, the lifting assembly includes a tower crane and a lifting assembly, and the step of erecting the lifting assembly by the bridge deck crane specifically includes:

driving the bridge deck crane to erect and install the tower crane on one side of the bridge body in the width direction;

after the tower crane is erected, the bridge deck crane is driven to continuously move and erect and install the arch springes, the tower crane is driven to erect and install one side of the width direction of the bridge body, and the lifting assembly is used for being in driving connection with the arch ribs so as to drive the arch ribs to move upwards.

Optionally, the lifting assembly includes pylon and drive assembly, drives the tower crane erects in one side of the bridge width direction and installs the lifting assembly specifically includes:

driving the tower crane to erect and install the tower on one side of the bridge body in the width direction, and attaching and installing the tower crane on the tower;

the tower crane is driven to install the driving assembly on the tower frame, and the driving assembly is in driving connection with the arch rib so as to drive the arch rib to move upwards.

Optionally, the drive assembly includes driving piece and carries the cable, the driving piece is installed on the pylon, carry the both ends of cable respectively with the arch rib with the driving piece is connected, the driving piece is used for passing through carry the cable drive the arch rib moves up.

Optionally, one arch rib corresponds to at least two lifting assemblies, and the lifting assemblies are arranged at intervals along the length direction of the arch rib and are all positioned on the same side in the width direction of the arch rib.

Optionally, the bridge arch rib erection device further includes a horizontal stay cable, after the arch leg erection is completed, before the arch rib is driven to move upwards by the lifting assembly, the bridge arch rib erection method further includes: and dismantling the bridge deck crane, and simultaneously installing the horizontal inhaul cable on the arch rib.

Optionally, the bridge further includes a folding section structure, and folding and connecting the raised arch rib and the arch springing in place specifically includes: and the folding section structure is arranged between the end part of the arch rib and the end part of the arch leg, and the corner and the displacement of the folding position are adjusted through the horizontal stay rope, so that the folding section structure is respectively connected with the arch rib and the arch leg.

Optionally, the bridge further includes a boom, and after the raised arch rib is folded and connected with the arch springing, the bridge arch rib erection method further includes:

a plurality of hanging rods are vertically arranged between the arch rib and the bridge body and between the arch leg and the bridge body, one end of each hanging rod is connected with the bridge body, and the other end of each hanging rod is connected with the arch rib or the arch leg;

during installation of the boom, the lifting assembly is removed.

On the other hand, the invention also provides bridge arch rib erection equipment which is applied to the bridge arch rib erection method and comprises a bridge deck crane and a lifting assembly.

Compared with the prior art, the bridge arch rib erection equipment has the same beneficial effects as the bridge arch rib erection method, and the beneficial effects are not repeated here.

Drawings

FIG. 1 is a schematic flow chart of a method for erecting a bridge arch rib according to an embodiment of the present invention;

FIG. 2 is a schematic view of a horizontal assembly of arch ribs on a bridge in an embodiment of the invention;

FIG. 3 is a schematic diagram showing the completion of horizontal splicing of arch ribs on a bridge body in an embodiment of the present invention;

FIG. 4 is a schematic view of the installation of a lifting assembly and the erection of the footing in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of the installation of a horizontal cable in an embodiment of the present invention;

FIG. 6 is a schematic view showing the lifting and folding of the arch rib and the installation of the hanger rod in the embodiment of the present invention;

FIG. 7 is a schematic view of an erected and installed arch rib according to an embodiment of the present invention.

Reference numerals illustrate:

1-bridge; 2-bridge deck crane; 3-arch ribs; 4-lifting assembly; 41-tower crane; 42-a lifting assembly; 421-tower; 422-drive assembly; 5-arch feet; 6-arch rib brackets; 7-horizontal guy ropes; 8-folding section structure; 9-suspender.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the coordinate system XY provided herein, the forward direction of the X axis represents the front, the reverse direction of the X axis represents the rear, the forward direction of the Y axis represents the upper, and the reverse direction of the Y axis represents the lower.

In one aspect, an embodiment of the present invention provides a bridge arch rib erection method for completing erection of an arch rib 3 of a bridge by a bridge arch rib erection apparatus, the bridge including a bridge body 1, the arch rib 3 and an arch foot 5, the bridge arch rib erection apparatus including a bridge deck crane 2 and a lifting assembly 4, the bridge arch rib erection method including: driving two bridge deck cranes 2 which are close to each other to move oppositely along the length direction of the bridge body 1, and horizontally splicing arch ribs 3 between the two bridge deck cranes 2; after the horizontal splicing of the arch ribs 3 is completed, driving the bridge deck crane 2 to erect a lifting assembly 4, wherein the lifting assembly 4 is used for being in driving connection with the arch ribs 3; driving the bridge deck crane 2 to continue to move, and erecting and installing arch feet 5 at two ends of the arch rib 3 in the length direction through the bridge deck crane 2; after the erection and installation of the arch springing 5 are completed, the arch rib 3 is driven to move upwards by the lifting assembly 4, and the arch rib 3 which is lifted in place is folded and connected with the arch springing 5, so that the erection of the arch rib 3 is completed.

It should be noted that the schematic diagrams in fig. 3 to fig. 7 are all partial schematic diagrams, and the structural distribution in the other partial schematic diagrams and the schematic diagrams in the figures are symmetrical with each other about the dividing line.

In the present embodiment, the horizontal splicing of the arch rib 3 means that the arch rib 3 is erected and spliced on the support structure along the length direction of the arch rib 3.

In the embodiment, when the rib 3 needs to be horizontally spliced, as shown in fig. 2 and step S1, two bridge deck cranes 2 positioned on the midspan bridge deck of the bridge body 1 after the closure construction of the bridge body 1 are utilized to horizontally splice the rib 3, namely, the two bridge deck cranes 2 are converged on the midspan bridge deck after the closure of the bridge body 1, then the two bridge deck cranes 2 move in opposite directions, and when the two bridge deck cranes 2 move in opposite directions, the rib 3 is horizontally spliced between the two bridge deck cranes 2, the bridge deck space of the bridge body 1 is utilized to finish the rib 3, and the subsequent process of erection and installation can be performed after the horizontal splicing is completed, so that the defect that the rib 3 needs to be transported to the bridge body 1 after the horizontal splicing is performed in a preset horizontal splicing place is avoided, the horizontal splicing transportation time of the rib 3 is effectively shortened, and the construction efficiency is improved; as shown in fig. 3, fig. 4, step S2 and step S3, after the horizontal splicing of the arch rib 3 is completed, a lifting assembly 4 in driving connection with the arch rib 3 can be erected by driving the bridge deck crane 2, so that the subsequent lifting operation of the arch rib 3 is facilitated, and after the erection of the lifting assembly 4 is completed, the bridge deck crane 2 continues to move, and arch feet 5 can be respectively erected at two ends of the bridge deck, which are positioned in the length direction of the arch rib 3, so that the subsequent arch rib 3 is conveniently lifted and then is in butt joint folding connection with the arch rib 3, so as to complete the installation and erection of the arch rib 3; as shown in fig. 6 and step S4, after the erection and installation of the arch rib 5 are completed, the lifting assembly 4 can drive the arch rib 3 to move upwards, the arch rib 3 gradually moves upwards, the end of the arch rib 3 gradually approaches the end of the arch rib 5, until the arch rib 3 moves upwards to be aligned with the arch rib 5, the arch rib 3 is folded and connected with the arch rib 5, the erection and installation of the arch rib 3 can be completed, in the upward lifting process of the arch rib 3, the direction and the lifting speed of the lifting force output by the lifting assembly 4 on the arch rib 3 can be kept unchanged, the process of synchronous control during the vertical rotation operation of the arch rib 3 is avoided, the control of the whole lifting process is simpler, the lifting direction is kept unchanged, the stability in the lifting process of the arch rib 3 is guaranteed, the safety of the lifting process is improved, meanwhile, the folding connection position of the arch rib 3 and the folding connection of the arch rib 5 is located at the end of the lowest position of the arch rib 3, the folding process is convenient to control in the folding process, the butt joint precision and the stability are higher, the construction efficiency, the erection quality and the safety coefficient of the whole installation and the construction process of the arch rib 3 are effectively lifted.

In this embodiment, the bridge body 1 is formed by connecting steel trusses, in the construction process of the steel trusses, the bridge deck crane 2 is moved relatively from two ends of the bridge body 1, the steel trusses are paved in the moving process, and finally, the junction is realized at the junction of the bridge body 1, while the bridge arch rib erection method of the invention utilizes the characteristics that the bridge deck crane 2 is finally positioned on the bridge deck of the bridge body 1, realizes the paving of the steel trusses of the bridge body 1 and the connection of the horizontal splicing of the arch ribs 3, and improves the overall construction efficiency. Of course, in other embodiments of the present invention, the bridge deck crane 2 may be moved to the midspan deck of the bridge body 1, and then the rib 3 may be laid down.

Optionally, the bridge arch rib erection device further comprises an arch rib bracket 6, wherein the arch rib 3 is formed by sequentially connecting a plurality of arch rib sections; two bridge deck cranes 2 positioned at the midspan position of the bridge body 1 are driven to move oppositely along the length direction of the bridge body 1, and an arch rib 3 is horizontally spliced between the two bridge deck cranes 2, and the bridge deck crane comprises: a plurality of arch rib brackets 6 are erected and installed between two bridge deck cranes 2 at intervals by driving the bridge deck cranes 2; after the erection and installation of one arch rib bracket 6 are completed, erecting and installing arch rib sections on the arch rib bracket 6, and after the erection and installation of the arch rib sections on the adjacent arch rib brackets 6 are completed, connecting the adjacent two arch rib sections; all arch rib sections are connected in sequence to form the arch rib 3 at the same time when all arch rib brackets 6 are erected and installed.

In this embodiment, as shown in fig. 1, in order to facilitate transportation of the arch rib 3, the arch rib 3 is divided into a plurality of arch rib segments that can be connected to each other, and in order to facilitate horizontal splicing of the arch rib 3, the bridge arch rib erection device is further provided with arch rib supports 6, when horizontal splicing of the arch rib 3 is performed, the bridge deck crane 2 firstly erects one arch rib support 6 on the bridge deck, and erects the arch rib segments on the arch rib supports 6, and then continues to move back to back along the length direction of the bridge body 1 by a preset distance, erects one arch rib support 6, erects another arch rib segment on the arch rib support 6, connects this arch rib segment with the previous arch rib segment, and then continues to move back to back, and installation of the arch rib support 6 and erection of the arch rib segment and connection with the previous arch rib segment are repeated, so that the horizontal splicing of the whole arch rib 3 is realized, and the plurality of the arch rib supports 6 arranged at intervals along the length direction of the bridge body 1 can not only provide support for the segment erection of the arch rib 3, but also can provide stable lifting for the arch rib 3, and stable lifting the following arch rib 3, and stable lifting of the arch rib assembly is convenient.

In this embodiment, the installation of the first rib bracket 6 and the erection of the first rib segment are completed by the two bridge cranes 2 together, and then the two bridge cranes 2 perform symmetrical movement with respect to the first rib bracket 6, and continue to install the rib bracket 6 and the erection of the rib segment.

In this embodiment, as shown in fig. 3, since the entire arch rib 3 has an upwardly convex arc structure, the height of the arch rib bracket 6 is reduced from the middle of the arch rib 3 to the two end assemblies.

In the erection and installation of the arch bar 5, the arch bar 5 may be erected and installed using the same arch bar brackets as the arch bar brackets 6 and the same arch bar segments as the arch bar segments.

In this embodiment, after the rib 3 is lifted and folded, the rib bracket 6 and the arch leg bracket may be removed.

Optionally, the lifting assembly 4 includes a tower crane 41 and a lifting component 42, and the erecting of the lifting assembly 4 by the bridge crane 2 specifically includes: driving the bridge deck crane 2 to erect and install a tower crane 41 on one side of the bridge body 1 in the width direction; after the tower crane 41 is erected, the bridge deck crane 2 is driven to move continuously and the installation arch foot 5 is erected, the tower crane 41 is driven to erect and install the lifting assembly 42 on one side of the width direction of the bridge body 1, and the lifting assembly 42 is used for being in driving connection with the arch rib 3 so as to drive the arch rib 3 to move upwards.

In this embodiment, as shown in fig. 3 and 4, in order to facilitate the overall erection and installation of the lifting assembly 4, a tower crane 41 and a lifting assembly 42 are provided to form the lifting assembly 4, the tower crane 41 is erected and installed on one side of the bridge body 1 in the width direction by the bridge deck crane 2, after the tower crane 41 is erected and lifted up in height, the bridge deck crane 2 can respectively erect and install the arch feet 5 at two ends of the arch rib 3 in the length direction, meanwhile, the tower crane 41 can be driven to erect and install the lifting assembly 42 on one side of the bridge body 1 in the width direction, so that the lifting assembly 42 is in driving connection with the arch rib 3 to complete the upward movement of the arch rib 3, the erection and installation of the lifting assembly 42 are completed while the erection and installation of the arch feet 5 are ensured, the construction time is saved, and the construction efficiency is effectively improved.

In the present embodiment, as shown in fig. 3, the bottom of the tower crane 41 is supported on a temporary steel pipe pile on one side in the width direction of the bridge 1.

Optionally, the lifting assembly 42 includes a tower 421 and a driving assembly 422, and the driving tower 41 is erected on one side of the bridge body 1 in the width direction to install the lifting assembly 42 specifically includes: the driving tower crane 41 is provided with a tower 421 erected on one side in the width direction of the bridge body 1, and the tower crane 41 is attached to the tower 421; the drive tower 41 mounts a drive assembly 422 on the tower 421 and drivingly connects the drive assembly 422 with the rib 3 to drive the rib 3 upward.

As shown in fig. 3 and 4, in order to ensure the stability of the lifting assembly 4 and the lifting stability of the arch rib 3, in this embodiment, the tower 421 and the driving assembly 422 are provided to form the lifting assembly 42, and after the tower 421 is installed on one side of the tower crane 41 in the width direction of the bridge body 1, the tower crane 41 is attached to the tower 421, so that the structural stability of the tower crane 41 and the tower 421 is effectively improved, and the driving assembly 422 can be installed on the tower 421 through the tower crane 41, so that the driving assembly 422 is conveniently connected with the arch rib 3 in a driving manner, and the arch rib 3 is conveniently stably lifted.

In this embodiment, as shown in fig. 3, the bottom of the tower 421 is fixed to a temporary pier distribution beam on one side of the bridge 1 in the width direction, and the temporary pier is located below the bridge 1.

Optionally, the driving assembly 422 includes a driving member and a lifting cable, the driving member is mounted on the tower 421, two ends of the lifting cable are respectively connected with the arch rib 3 and the driving member, and the driving member is used for driving the arch rib 3 to move upwards through the lifting cable.

In this embodiment, the driving assembly 422 is composed of a driving element and a lifting rope, wherein the driving element is mounted on the tower 421, two ends of the lifting rope are respectively connected with the arch rib 3 and the driving element, and the driving element can complete the upward movement of the arch rib 3 through the lifting rope.

In this embodiment, the driving member is composed of a jack and a reaction frame, and the lifting cable is tensioned by the output thrust of the jack, so that the lifting cable lifts the arch rib 3. In other embodiments of the present invention, the driving member may be a winch, where the winch is connected to one end of the lifting cable, and the lifting cable is shortened by outputting a rotational force to lift the arch rib 3.

Alternatively, one rib 3 corresponds to at least two lifting assemblies 4, and the lifting assemblies 4 are spaced apart along the length direction of the rib 3 and are located on one side of the rib 3 in the width direction.

As shown in fig. 4, in order to ensure that the distribution of the lifting force in the lifting process of the arch rib 3 is uniform and stable, in this embodiment, at least two lifting assemblies 4 are provided for lifting one arch rib 3, and the lifting assemblies 4 can be arranged at intervals along the length direction of the arch rib 3 and are all located on the same side of the arch rib 3, so that when the arch rib 3 is lifted, the lifting assemblies 4 output different lifting forces according to different positions, so that the overall stable lifting of the arch rib 3 is realized, and the lifting stability of the arch rib 3 is ensured.

Optionally, the bridge arch rib erection device further comprises a horizontal stay cable 7, after the arch foot 5 is erected and installed, before the arch rib 3 is driven to move upwards by the lifting assembly 4, the bridge arch rib erection method further comprises the following steps: the bridge deck crane 2 is removed, and a horizontal stay rope 7 is installed on the arch rib 3.

As shown in fig. 5, in this embodiment, the bridge arch rib erection device is further provided with a horizontal stay cable 7, after erection and installation of the arch foot 5 are completed, before the driving arch rib 3 ascends, the bridge deck crane 2 is dismantled, meanwhile, the horizontal stay cable 7 is installed on the arch rib 3, the horizontal stay cable 7 is horizontally arranged, two ends of the horizontal stay cable 7 are respectively connected with two parts of the arch rib 3 along the length direction, so that the structural overall stability of the arch rib 3 is effectively improved, the arch rib 3 is conveniently and subsequently lifted through the lifting assembly 4, and the stability of the arch rib 3 in the lifting process is improved.

Optionally, the bridge further includes a folding section structure 8, and folding and connecting the raised arch rib 3 and the arch foot 5 specifically includes: the folding section structure 8 is arranged between the end part of the arch rib 3 and the end part of the arch foot 5, and the corner and the displacement of the folding position are adjusted through the horizontal stay rope 7, so that the folding section structure 8 is respectively connected with the arch rib 3 and the arch foot 5.

As shown in fig. 6, in this embodiment, in order to facilitate the folding of the arch rib 3 and the arch leg 5, a folding section structure 8 is further provided, where the folding section structure 8 is located between the end of the raised arch rib 3 and the end of the arch leg 5, and the adjustment of the corner and displacement of the end of the arch rib 3 at the folding position can be achieved by stretching the horizontal stay cable 7, so that the folding section structure 8 can be connected with the end of the arch leg 5 and the end of the arch rib 3, and the stable connection between the arch rib 3 and the arch leg 5 is achieved.

Optionally, the bridge further comprises a hanging rod 9, and after the raised arch rib 3 is folded and connected with the arch foot 5, the bridge arch rib erection method further comprises the following steps: a plurality of hanging rods 9 are vertically arranged between the arch rib 3 and the bridge body 1 and between the arch leg 5 and the bridge body 1, one end of each hanging rod 9 is connected with the bridge body 1, and the other end of each hanging rod 9 is connected with the arch rib 3 or the arch leg 5; during installation of the boom 9, the lifting assembly 4 is removed.

In this embodiment, as shown in fig. 6 and 7, in order to ensure the overall structural stability of the folded rib 3 and the arch leg 5, the bridge is further provided with a hanging rod 9, after the rib 3 and the arch leg 5 are folded and connected, a plurality of hanging rods 9 are vertically arranged between the rib 3 and the bridge body 1 and between the arch leg 5 and the bridge body 1, one end of the hanging rod 9 is connected with the bridge body 1, and the other end is connected with the rib 3 or the arch leg 5, so that the rib 3 and the bridge body 1 and the arch leg 5 are stably connected into a whole, and the overall structural stability of the folded rib 3 and the arch leg 5 is effectively improved.

In addition, in the installation process of the suspender 9, the lifting assembly 4 can be removed, and after the suspender 9 is installed, the suspender 9 is also installed, and the whole erection and installation process of the arch rib 3 is completed.

In another aspect, an embodiment of the present invention provides a bridge arch rib erection apparatus, which is applied to the bridge arch rib erection method, and the bridge arch rib erection apparatus includes a bridge deck crane 2 and a lifting assembly 4.

As shown in fig. 1 to 7, the technical effects of the bridge rib erection device in this embodiment are similar to those of the bridge rib erection method described above, and will not be described again.

Although the invention is disclosed above, the scope of the invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications will fall within the scope of the invention.

Claims (10)

1. Bridge arch rib erection method, characterized by being used for completing the erection of an arch rib (3) of a bridge by bridge arch rib erection equipment, wherein the bridge comprises a bridge body (1), the arch rib (3) and arch legs (5), the bridge arch rib erection equipment comprises a bridge deck crane (2) and a lifting assembly (4), and the bridge arch rib erection method comprises the following steps:

driving two bridge deck cranes (2) positioned at the midspan position of the bridge body (1) to move oppositely along the length direction of the bridge body (1), and horizontally splicing the arch ribs (3) between the two bridge deck cranes (2);

after the horizontal splicing of the arch ribs (3) is completed, the bridge deck crane (2) is driven to erect the lifting assembly (4), and the lifting assembly (4) is used for being in driving connection with the arch ribs (3) after the horizontal splicing is completed;

the bridge deck crane (2) is driven to continuously move in opposite directions, and arch legs (5) are erected and installed at two ends of the arch rib (3) in the length direction through the bridge deck crane (2);

after the erection and installation of the arch springing (5) are completed, the arch rib (3) is driven to move upwards through the lifting assembly (4), and the arch rib (3) lifted in place is folded and connected with the arch springing (5), so that the erection of the arch rib (3) is completed.

2. A bridge arch rib erection method according to claim 1, wherein the bridge arch rib erection device further comprises an arch rib bracket (6), the arch rib (3) being formed by a plurality of arch rib segments connected in sequence;

driving two bridge deck cranes (2) located at the midspan position of the bridge body (1) to move oppositely along the length direction of the bridge body (1), and horizontally splicing the arch ribs (3) between the two bridge deck cranes (2), wherein the bridge deck crane comprises:

driving the bridge deck cranes (2) to erect a plurality of arch rib brackets (6) at intervals between the two bridge deck cranes (2);

after the erection and installation of one arch rib support (6) are completed, erecting and installing the arch rib sections on the arch rib support (6), and after the erection and installation of the arch rib sections on the adjacent arch rib supports (6) are completed, connecting the adjacent two arch rib sections;

and all arch rib sections are sequentially connected to form the arch rib (3) while all arch rib supports (6) are erected and installed.

3. Bridge arch rib erection method according to claim 1, wherein the lifting assembly (4) comprises a tower crane (41) and a lifting assembly (42), the erection of the lifting assembly (4) by the deck crane (2) specifically comprising:

driving the bridge deck crane (2) to erect and install the tower crane (41) on one side of the bridge body (1) in the width direction;

after the tower crane (41) is erected, the bridge deck crane (2) is driven to move continuously and erect and install the arch springing (5), the tower crane (41) is driven to erect and install one side of the width direction of the bridge body (1) and the lifting assembly (42), and the lifting assembly (42) is used for being in driving connection with the arch rib (3) so as to drive the arch rib (3) to move upwards.

4. A bridge arch rib erection method according to claim 3, wherein the lifting assembly (42) comprises a tower (421) and a driving assembly (422), and driving the tower crane (41) to erect and install the lifting assembly (42) on one side of the bridge body (1) in the width direction comprises:

driving the tower crane (41) to erect and mount the tower (421) on one side of the bridge body (1) in the width direction, and attaching and mounting the tower crane (41) on the tower (421);

the tower crane (41) is driven to install the driving component (422) on the tower (421), and the driving component (422) is in driving connection with the arch rib (3) so as to drive the arch rib (3) to move upwards.

5. A bridge arch rib erection method according to claim 4, wherein the driving assembly (422) comprises a driving member and a lifting cable, the driving member is mounted on the tower (421), two ends of the lifting cable are respectively connected with the arch rib (3) and the driving member, and the driving member is used for driving the arch rib (3) to move upwards through the lifting cable.

6. A bridge arch rib erection method according to any one of claims 1 to 5, wherein one arch rib (3) corresponds to at least two lifting assemblies (4), and the lifting assemblies (4) are arranged at intervals along the length direction of the arch rib (3) and are all located on the same side in the width direction of the arch rib (3).

7. A bridge arch rib erection method according to any one of claims 1-5, wherein the bridge arch rib erection device further comprises a horizontal guy (7), and wherein after erection of the arch foot (5) the bridge arch rib (3) is driven upwards by the lifting assembly (4), the bridge arch rib erection method further comprises: and dismantling the bridge deck crane (2) and simultaneously installing the horizontal stay cable (7) on the arch rib (3).

8. Bridge arch rib erection method according to claim 7, characterized in that the bridge further comprises a closing section structure (8), the closing connection of the raised arch rib (3) with the arch foot (5) specifically comprises: and the folding section structure (8) is arranged between the end part of the arch rib (3) and the end part of the arch leg (5), and the corner and the displacement of the folding position are adjusted through the horizontal stay cable (7), so that the folding section structure (8) is respectively connected with the arch rib (3) and the arch leg (5).

9. A bridge arch rib erection method according to any one of claims 1 to 5, wherein the bridge further comprises a boom (9), and wherein after the raised arch rib (3) is brought into close connection with the footing (5), the bridge arch rib erection method further comprises:

a plurality of hanging rods (9) are vertically arranged between the arch rib (3) and the bridge body (1) and between the arch leg (5) and the bridge body (1), one end of each hanging rod (9) is connected with the bridge body (1), and the other end of each hanging rod (9) is connected with the arch rib (3) or the arch leg (5);

-removing the lifting assembly (4) during installation of the boom (9).

10. A bridge rib erection apparatus, applied to a bridge rib erection method as claimed in any one of claims 1 to 9, comprising a bridge deck crane (2) and a lifting assembly (4).