CN113622310A

CN113622310A - Method for transporting beam and frame beam suitable for small-radius curve section

Info

Publication number: CN113622310A
Application number: CN202110873107.7A
Authority: CN
Inventors: 赵立财; 卢建勋; 吕忠华; 黄海峰
Original assignee: China Railway 19th Bureau Group Co Ltd; Fifth Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
Current assignee: China Railway 19th Bureau Group Co Ltd; Fifth Engineering Co Ltd of China Railway 19th Bureau Group Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2021-11-09

Abstract

The present disclosure relates to a method of transporting a girder erection beam suitable for a small radius curve section, comprising the steps of: dividing a transportation path into a first road section, a second road section and a third road section in sequence according to road condition information of the transportation path between a pre-selected precast beam field and a road to be erected; enabling the transportation equipment loaded with the T-shaped beam to run in a reverse mode on the first road section; after the transportation equipment reaches the intersection of the first road section and the second road section, enabling the transportation equipment loaded with the T-shaped beam to drive in the forward direction of the second road section; when the transportation equipment reaches the intersection of the second road section and the third road section, the transportation equipment turns around; placing the T-beam on the transportation equipment, and enabling the transportation equipment loaded with the T-beam to drive in a reverse mode to a road with the beam to be erected in the third path section; the method for erecting the T-beam is selected according to the terrain information of the road where the T-beam is to be erected, and the T-beam is erected on the road where the T-beam is to be erected through the beam erecting equipment, so that the T-beam is smoothly and safely transported to the road where the T-beam is to be erected by the transporting equipment, the damage risk of the T-beam is avoided, and the construction safety of the T-beam is ensured.

Description

Method for transporting beam and frame beam suitable for small-radius curve section

Technical Field

The disclosure relates to the technical field of beam conveying, in particular to a beam conveying method suitable for a small-radius curve section.

Background

Along with the development of the basic construction of China, the construction of highways is changed day by day, and particularly, the construction of highways in mountain areas not only solves the traffic problem, but also drives the rapid development of economy along the line.

However, there are many small radius curve sections on the mountain section, and it is very difficult to transport T-beams and erect beams on the small radius curve sections. If the construction method is improper, accidents such as T-shaped beam damage and the like can be caused, so that the economic loss is serious, and even the construction period is seriously influenced.

Disclosure of Invention

To address the above technical problems, or at least partially solve the above technical problems, the present disclosure provides a method of transporting a girder in a small radius curve section.

The present disclosure provides a method for transporting a girder erection beam suitable for a small radius curve section, comprising the steps of:

dividing a transportation path between a pre-selected precast beam yard and a road to be erected into a first road section, a second road section and a third road section in sequence according to road condition information of the transportation path, wherein the first road section is close to the precast beam yard;

enabling the transportation equipment loaded with the T-shaped beam to run in a reverse mode on the first road section;

after the transportation equipment reaches the intersection of the first road section and the second road section, enabling the transportation equipment loaded with the T-shaped beam to drive in the forward direction of the second road section;

after the transportation equipment reaches the intersection of the second road section and the third road section, hoisting the T-shaped beam carried on the transportation equipment, and turning around the transportation equipment after the T-shaped beam is hoisted;

placing the T-beam on the transportation equipment, so that the transportation equipment loaded with the T-beam drives in reverse at the third path section to the road where the beam is to be erected;

and selecting a beam erecting method according to the topographic information at the road to be erected so as to erect the T beam on the road to be erected through beam erecting equipment.

According to an embodiment of the present disclosure, before the step of sequentially dividing the transportation path into a first section, a second section and a third section according to road condition information of the transportation path between the pre-selected precast beam yard and the road to be beam-erected, the method further includes:

selecting the transport equipment according to the weight of the T-beam;

and leveling and compacting the transportation passage, so that the gradient of the cross slope of the transportation passage is reduced to be the preset gradient of the cross slope, and the gradient of the longitudinal slope is reduced to be the preset gradient of the longitudinal slope.

According to an embodiment of the present disclosure, after the step of flattening and compacting the transportation path, the method further comprises:

performing a transport test at a preselected bend of the transport way to detect whether the transport way is available for the transport apparatus to transport the T-beam;

when the rotation angle of the base bearings of the front wheel and the rear wheel of the transportation equipment is smaller than the maximum rotation angle, the transportation path is used for the transportation equipment to transport the T-shaped beam.

According to an embodiment of the present disclosure, the step of enabling the transportation device loaded with the T-beam to drive in reverse in the first road section comprises:

and arranging first chain block structures at positions of the T-shaped beam, which are close to two sides of the road of the transportation passage, so as to be fixed on the transportation equipment.

According to an embodiment of the present disclosure, after the step of providing the first chain block structure to the T-beam near both sides of the road of the transportation path to be fixed on the transportation device, the method further includes: and arranging second inverted chain structures at the positions, close to the head of the transportation equipment, of the T beam and at the positions, close to the tail of the transportation equipment, of the T beam so as to be fixed on the transportation equipment, so that the T beam carried on the transportation equipment is transported and reinforced.

According to one embodiment of the disclosure, a sleeper hanging device is arranged at the tail of the transportation equipment and comprises a locking piece and a sleeper, and the sleeper is fixed at the tail of the transportation equipment through the locking piece; and when the retaining member is opened, the sleeper can fall on the transportation path to limit the rear wheels of the transportation equipment.

According to an embodiment of the present disclosure, before the step of selecting the preset erection method according to the topographic information of the to-be-erected beam road, the method further includes: and widening and compacting the field around the to-be-erected beam road.

According to an embodiment of the present disclosure, the girder apparatus includes a first girder apparatus and a second girder apparatus, a load threshold of the first girder apparatus is greater than a load threshold of the second girder apparatus;

the to-be-erected beam road at least comprises a first span, a second span and a third span which are connected with one another, the first span is close to the transportation path, two ends of the first span are respectively provided with a first cover beam and a second cover beam, the first cover beam is close to the transportation path, and the first span is used for erecting four T-shaped beams;

the step of selecting the preset erection method according to the topographic information of the to-be-erected beam road comprises the following steps of:

moving the first girder apparatus onto the transportation path to one side of the second cap girder; positioning the second girder erection device at an end of the first capping beam remote from the second capping beam; hoisting two ends of the T-shaped beam through the first beam erecting equipment and the second beam erecting equipment respectively to erect the T-shaped beam in the middle of the first span;

moving the first girder erection device to an end of the second capping beam remote from the first capping beam, and moving the second girder erection device to an end of the first capping beam remote from the second capping beam; and hoisting two ends of the two T-shaped beams through the first beam erecting equipment and the second beam erecting equipment respectively so as to erect the two ends of the first span.

According to an embodiment of the present disclosure, the step of respectively hoisting two ends of two T-beams by the first and second girder erection apparatuses to erect both sides of the first span further includes: erecting a T-shaped beam on the second span;

transporting the T-beam for the third span onto the second span through three adjacent sheets of the T-beams of the second span.

According to an embodiment of the present disclosure, after the transporting the T-beam for the third span onto the second span by three adjacent sheets of the T-beam for the second span further comprises:

moving the first beam erecting equipment to the middle of the third span, and positioning the second beam erecting equipment at one end of the third span far away from the second span;

hoisting one end of the T-beam on the second span by the first beam erecting device to move the T-beam to the third span, hoisting the one end of the T-beam by the second beam erecting device, and hoisting the other end of the T-beam by the first beam erecting device to erect the T-beam on the third span.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the present disclosure provides a method for transporting a girder erection beam suitable for a small radius curve section, comprising the steps of: dividing a transportation path into a first path, a second path and a third path in sequence according to road condition information of the transportation path between a pre-selected precast beam yard and a road to be erected, wherein the first path is close to the precast beam yard; enabling the transportation equipment loaded with the T-shaped beam to run in a reverse mode on the first road section; after the transportation equipment reaches the intersection of the first road section and the second road section, enabling the transportation equipment loaded with the T-shaped beam to drive in the forward direction of the second road section; after the transportation equipment reaches the intersection of the second road section and the third road section, hoisting the T-shaped beam carried on the transportation equipment, and turning the transportation equipment around after the T-shaped beam is hoisted; placing the T-beam on the transportation equipment, so that the transportation equipment loaded with the T-beam drives in a reverse mode to a road with the beam to be erected in the third path section; and selecting a beam erecting method according to the topographic information at the road to be erected so as to erect the T-beam on the road to be erected through the beam erecting equipment. That is, the present disclosure divides the precast beam yard to the different road sections according to the topographic conditions of the transportation path between the precast beam yard and the road to be erected, and then transports the T beam in different transportation modes in different road sections, thereby ensuring that the transportation device transports the T beam smoothly and safely to the road to be erected, and then selects a proper erection method according to the topographic conditions of the road to be erected, etc., thereby efficiently and safely erecting the T beam, avoiding the risk of damage to the T beam, and ensuring the construction safety of the T beam.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a flow chart of a method for transporting a girder in a small radius curve section according to an embodiment of the present disclosure;

FIG. 2 is a front view of the transport apparatus;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a schematic plan view of a transport pathway;

FIG. 5 is a schematic elevation view of the first erecting equipment;

FIG. 6 is a schematic view of a T-beam of a first span of a road to be framed;

FIG. 7 is a schematic view of a first girder erection apparatus and a second girder erection apparatus erecting a 1-2 girder, a 1-1 girder of a first span;

FIG. 8 is a schematic view of a first girder erection apparatus and a second girder erection apparatus erecting 1-3 girders, 1-4 girders of a first span;

fig. 9 is a schematic view of a first girder mounting apparatus and a second girder mounting apparatus mounting a T-beam of a second span.

Wherein, 1, transporting equipment; 11. carrying a beam vehicle; 12. carrying out gun carriage; 13. a first chassis; 14. a second chassis; 2. a T-beam; 21. a first chain block structure; 22. a second inverted chain structure; 23. a steel support; 24. a sleeper hanging device; 241. crossties; 25. a third inverted chain structure; 26. a fourth inverted chain structure; 3. a transportation pathway; 4. a girder erection device; 41. a first girder erection device; 42. a second girder erection device; 5. a road to be erected; 51. a first span; 511. an abutment; 512. a first capping beam; 52. a second span; 53. a third span; 6. and (7) roadbed.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Specifically, as shown in fig. 1, the present disclosure provides a method for transporting a girder erection beam suitable for a small radius curve section, comprising the steps of:

s101: dividing a transportation path into a first path, a second path and a third path in sequence according to road condition information of the transportation path between a pre-selected precast beam yard and a road to be erected, wherein the first path is close to the precast beam yard;

s102: enabling the transportation equipment loaded with the T-shaped beam to run in a reverse mode on the first road section;

s103: after the transportation equipment reaches the intersection of the first road section and the second road section, enabling the transportation equipment loaded with the T-shaped beam to drive in the forward direction of the second road section;

s104: after the transportation equipment reaches the intersection of the second road section and the third road section, hoisting the T-shaped beam carried on the transportation equipment, and turning the transportation equipment around after the T-shaped beam is hoisted;

s105: placing the T-beam on the transportation equipment, so that the transportation equipment loaded with the T-beam drives in a reverse mode to a road with the beam to be erected in the third path section;

s106: and selecting a beam erecting method according to the topographic information at the road to be erected so as to erect the T-beam on the road to be erected through the beam erecting equipment.

In step S101, the selected precast beam field should be flat and wide, so as to facilitate the fabrication of the T-beam. The precast beam yard in the embodiment is a Hu fixed interactive overpass precast beam yard, and the road to be erected is a four-bay bridge.

The length of the road to be erected is 30m, and the road to be erected needs 31T-beams which are commonly used T-beams according to the calculation of the commonly used specification and model of the T-beams, and the maximum hoisting weight of the T-beams is 75.2T.

In step S101, the transportation path is sequentially divided into a first section, a second section and a third section according to the traffic information of the transportation path, the first section is close to the precast beam yard, and the traffic information at this position can be divided according to whether the section contains a small radius curve and whether the transportation device is suitable for turning around. In this embodiment, the first road section, the second road section and the third road section all include small radius curve sections, the first road section and the second road section do not allow the transportation device to turn around, and at this time, step S102 is performed, and the transportation device carries the T beam to drive in reverse in the first road section; then, step S103 is carried out, and after the transportation equipment reaches the intersection of the first road section and the second road section, the transportation equipment carries the T beam to drive in the forward direction of the second road section; and S104, after the transportation equipment reaches the intersection of the second road section and the third road section, allowing the transportation equipment to turn around in the third road section, lifting the T beam carried on the transportation equipment, then turning around the transportation equipment, S105, placing the T beam on the transportation equipment after turning around, carrying the T beam by the transportation equipment to drive in a reverse mode at the third road section to the road where the T beam is to be erected, and S106, selecting a beam erecting method according to the terrain information of the road where the T beam is to be erected, so that the T beam is erected on the road where the T beam is to be erected by the beam erecting equipment.

Specifically, the beam transporting method of the present embodiment is mainly used for transporting and erecting beams to a four-bay bridge, as shown in fig. 4, since the beams are transported to the four-bay bridge through a filtered connecting line for beam erecting operation, the total length of a beam transporting route is 5812.4m, the total height difference reaches 196.5m, and since the transportation equipment cannot turn around at the branch point of a main line bridge and a ramp bridge, the transportation equipment starts from a precast beam yard to the intersection of the left-side bridge of the 3# bridge and the 1# bridge of the H-ramp on the fort, and the beam transporting vehicle runs in reverse, and the route length of the section is about 550m, that is, the length of the first route is about 550 m; the beam transporting vehicle is changed from reversing to forward running from the intersection of the main line bridge and the ramp bridge, the beam transporting vehicle runs forward to the position near the inlet of the four-bay tunnel, the length of the section of the path is about 3520m, namely the length of the second section of the path is about 3520 m; because the distance between the outlet of the four-bay tunnel and the bridge head of the four-bay bridge is only 35.5m, the turning of the transportation equipment cannot be finished, so the turning of the transportation equipment (the T beam is not turned) must be finished at the site at the inlet of the four-bay tunnel, and the specific method comprises the following steps: two 75T truck cranes are used for hoisting the T-beam, the transportation equipment is driven out and turned around, and then the T-beam is placed on the transportation equipment to complete the reinforcement. And after the transportation equipment finishes turning around, backing up the vehicle and entering a four-bay tunnel to finish the remaining transportation task of about 1742km, namely the length of the third path is about 1742 m.

In addition, in the transportation process, the transportation equipment runs at the lowest gear, the uniform speed and slow running of the transportation beam can be guaranteed in a downhill road section, the vehicle speed is controlled to be not more than 3km/h, emergency braking is strictly forbidden, the beam head leaping is prevented, a specially-assigned person is arranged to carry out whole-process tracking monitoring, and the road condition and the vehicle condition are observed at any time. The tray is all rotatable 20 degrees around the haulage equipment, and the angle degree is crossed to locomotive and back locomotive before can maximize adjustment when returning the curve through 30m radius, and can guarantee that the roof beam car crosses curved steadily. When passing through a 30m curve, the transportation equipment should run on the outer side of the curve to ensure enough turning space, and special people are configured to command the transportation equipment in front of and behind the transportation equipment. The construction site carries out transportation operation under the condition of traffic interruption, and accidents are prevented when other temporary vehicles pass.

The method also comprises the following steps before the transportation path is divided into a first path section, a second path section and a third path section in sequence according to the road condition information of the transportation path between the pre-selected precast beam field and the road to be erected: the transportation equipment is selected according to the weight of the T-beam, as shown in fig. 2 and fig. 3, the transportation equipment 1 specifically selects a girder transporting vehicle 11 and a gun carrier 12 to jointly carry the T-beam 2, wherein the girder transporting vehicle 11 adopts a 6 x 6 three-axle of 420 horsepower, the load of the girder transporting vehicle 11 is 100T, the gun carrier 12 is a 3-axis hydraulic power-assisted steering gun carrier, the transportation load of the gun carrier 12 is 60T, and the carrying capacity and the technical capacity of the girder transporting vehicle 11 and the gun carrier 12 meet the requirements when the T-beam 2 is jointly transported. The braking systems of the beam transporting vehicle 11 and the gun carrier 12 are air-break brakes, so that the braking system of the beam transporting vehicle 11 is effective and reliable. In addition, for loading the T-beam 2 on the transportation device 1, the T-beam 2 can be loaded by using a gantry crane of a precast beam yard.

Further, carry out flattening and compaction to the haulage way for the cross slope reduction of haulage way is predetermine the cross slope, and the longitudinal gradient reduces to predetermine the longitudinal gradient. The transportation path 3 is shown in fig. 4, the transportation path 3 has more small radius curve sections, the transportation path 3 has a whole distance 5812.4m, a total height difference reaches 196.5m, the maximum longitudinal slope gradient is-7%, three sections, each section of slope length exceeds 200m and comprises three small radius curve sections with the radius of 30m and one radius of 60m, the transportation path 3 is leveled and compacted, so that the transverse slope gradient of the transportation path 3 is reduced to a preset transverse slope gradient, and the longitudinal slope gradient is reduced to a preset longitudinal slope gradient. The specific operation method of the step comprises the following steps: the transportation path 3 usually comprises a roadbed and a bridge floor, calculation is carried out according to actual measurement data of the roadbed, then an excavator is adopted to level the roadbed, the leveling comprises manual fine leveling and compaction of a road roller, and then measurement team retest is carried out until the grade of a cross slope of the roadbed is completely adjusted to 0 and the grade of a longitudinal slope is adjusted to be below-4% after leveling, namely the grade of a preset cross slope is 0 and the grade of a preset longitudinal slope is below-4%. In addition, the bridge floor is leveled along the movement track of the tire by sand or sand bags, the T-shaped beam erected on the four-bay bridge is required to be welded after the main ribs are all welded, the transportation equipment can be used for getting on the bridge and cannot walk to the side beam, a 30mm thick steel plate is laid on the wet joint between the two spans, the transportation equipment is guaranteed to be stable and reliable when crossing the wet joint, and the erected steel bars on the beam surface are temporarily bent to avoid puncturing the tire.

Further, after flattening and compacting the transportation channel, the method further comprises the following steps: carrying out a transport test at a preselected bend of the transport path to detect whether the transport path is available for the transport equipment to transport the T-beam; specifically, when the rotation angles of the base bearings of the front wheel and the rear wheel of the transportation equipment are smaller than the maximum rotation angle, the transportation passage can be used for the transportation equipment to transport the T-beam; otherwise, it is not transportable.

During actual test, a curve section with the radius of 30m is selected for carrying out beam transporting test, and the T beam is replaced by a welding I-shaped steel with the length of 30m so as to ensure that the width of the road surface meets the beam transporting requirement. The following two points can be satisfied in the beam transporting experiment: the first point is as follows: the wheel-type track, namely after entering the curve, the front wheels of the transportation equipment drive to the outer side of the curve center line, and the rear wheels drive along the track of the front wheels, so that the connection line of the front wheel base and the rear wheel base is basically ensured to be consistent with the longitudinal line of the T-shaped beam. And a second point: in the transportation process, the rotating angles of the base bearings of the front wheel and the rear wheel do not reach the maximum angle, namely, sufficient allowance exists, so that the contact surface of the T beam and the base does not generate relative displacement or limit conditions, and the transportation safety of the T beam is guaranteed.

Further, in the process of transporting the T-beam, the T-beam carried on the transporting device needs to be transported and reinforced, and the transporting and reinforcing method includes: as shown in fig. 2 and 3, a first inverted chain structure 21 and a second inverted chain structure 22 are provided at positions of the T-beam 2 near both sides of the road of the transportation path to be fixed on the first chassis 13 of the transportation apparatus 1, thereby preventing the T-beam 2 from overturning; the position of the T beam 2 close to the head of the transportation equipment 1 and the position of the T beam 2 close to the tail of the transportation equipment 1 are respectively provided with a third chain block structure 25 and a fourth chain block structure to be fixed on the second chassis 14 of the transportation equipment 1, so that the head fleeing phenomenon of the T beam 2 is prevented. Both the first inverted chain structure 21 and the second inverted chain structure 22 can be chain blocks. In addition, both ends of the T-beam 2 are also fixed by steel supports 23.

In addition, as shown in fig. 2, a sleeper hanging device 24 is arranged at the tail of the transportation device 1, the sleeper hanging device 24 comprises a locking piece and a sleeper 241, and the sleeper 241 is fixed at the tail of the transportation device 1 through the locking piece; and sleeper 241 can drop on the transportation way when retaining member is opened to it is spacing to carry out the back wheel to transportation equipment 1, prevents that transportation equipment 1 from taking place the back swift current. The crosstie 241 may be specifically a crosstie.

Before the preset erection method is selected according to the topographic information of the road with the beam to be erected, the method further comprises the following steps: and widening and compacting the field around the to-be-erected beam road. Specifically, after the girder erection equipment completes the model selection, drivers and all parties of truck cranes with abundant experience need to take steps on the bridgehead site, the underpass and the underbridge truck crane working site of the road on which the girder is to be erected, dig out and widen the turning positions of the underpass with insufficient width, fill and widen a plurality of sites under the bridge, roll tightly by a road roller, and ensure that the girder erection equipment has enough driving space and enough working site space at the turning positions of the underpass.

According to the hoisting weight, the structural characteristics, the external dimension, the hoisting height and the field hoisting conditions of the batch of T-beams, as shown in FIG. 5, the beam erecting equipment is calculated to carry out the hoisting and positioning work of the T-beams by adopting a hoisting construction method of double-crane hoisting of 1 350T automobile type crane and 1 260T automobile type crane. The 350t truck crane (three SAC3500, configured with Y-type super-lifting device) has working parameters of main arm extension length of 50.5m, 100t counterweight hanging, super-lifting device adding, working radius within 18m, and rated lifting capacity of 54.5 t. The 260t truck crane (creep QAY260) has working parameters of extending main arm length of 44.9m, hanging 43t counterweight, working radius within 9m and rated lifting capacity of 56.7 t. The T-beam is hoisted and bound by two 22 m-long phi 56(6 multiplied by 37+1) -1870 steel wire ropes which are bound in a double big pocket for loading and unloading and hoisting in place, arc-shaped tiles are padded at the edges of the steel wire ropes and the T-beam, and the binding point is within 1m of the two beam ends of the T-beam.

As shown in fig. 7, the girder installation 4 includes a first girder installation 41 and a second girder installation 42, wherein the first girder installation 41 is the above-mentioned 350t truck crane, and the second girder installation 42 is the above-mentioned 260t truck crane.

As shown in fig. 4 and 6, the to-be-bridged road 5 comprises at least a first span 51 and a second span 52 which are connected with each other, the first span 51 is close to the transportation path 3, and the to-be-bridged road 5 can comprise a third span 53, a fourth span or even more. Two ends of the first span 51 are respectively provided with an abutment 511 and a first cover beam 512, the abutment 511 is close to the transportation passage 3, and the first span 51 is used for erecting four T-shaped beams 2; the hoisting sequence of the T beam 2 of the 1 st span is as follows: 1-2 beam → 1-1 beam → 1-3 beam → 1-4 beam. The arrangement and numbering of the T-beam 2 of the first span is shown in figure 6.

As shown in fig. 6 and 7, the method of erecting the 1-1 beam and the 1-2 beam of the first span 51 includes: the two ends of the 1-2 beam are respectively lifted by the first girder erection equipment 41 and the second girder erection equipment 42 to be erected on the first span 51, and then the two ends of the 1-1 beam are lifted to be erected on the first span 51, the first girder erection equipment 41 is positioned on the transportation path 3 and positioned at one side of the first capping beam 512, i.e., the front side of the first capping beam 512 as shown in fig. 7, and the second girder erection equipment 42 is positioned at one end of the bridge abutment 511 away from the first capping beam 512, i.e., the left side of the bridge abutment 511 as shown in fig. 7.

Specifically, as shown in fig. 7, for the 1-2 beam and 1-1 beam hoisting of the first span 51: the 1-2 beams and the 1-1 beams are transported to the front of the head of the first beam erecting device 41 along the transportation path 3, after the first beam erecting device 41 lifts one end of the gun carriage 12, the beam transporting vehicle 11 backs up slowly, one end of the 1-1 beam lifted by the first beam erecting device 41 is matched with the beam transporting vehicle 11 to back up to the load range of the second beam erecting device 42, and finally the 1-1 beam and the 1-2 beam are hoisted in place in sequence through the double-crane hoisting of the first beam erecting device 41 and the second beam erecting device 42.

As shown in fig. 8, the method for erecting the 1-3 beams and 1-4 beams of the first span 51 includes: the two ends of the 1-3 beams and the 1-4 beams are respectively lifted by the first girder erection equipment 41 and the second girder erection equipment 42 to be erected on the first span 51, the first girder erection equipment 41 is positioned at one end of the first capping beam 512 far away from the bridge abutment 511, and the second girder erection equipment 42 is positioned at one end of the bridge abutment 511 far away from the first capping beam 512, namely, on the roadbed 6. Due to the limitation of the rear slope of the first capping beam 512, the crane erecting position is 15m away from the first capping beam 512, so that the first beam erecting device 41 is required to be erected behind the first capping beam 512, and the second beam erecting device 42 is required to be erected at the bridge head. The beam transporting vehicle 11 goes up the bridge by using two adjacent T beams 2, after the first beam erecting equipment 41 hoists one ends of the 1-3 beams and the 1-4 beams, the beam transporting vehicle 11 slowly backs to a proper position, the second beam erecting equipment 42 hoists one ends of the 1-3 beams and the 1-4 beams, and finally the 1-3T beams and the 1-4T beams are hoisted in place in sequence by the double-crane hoisting of the first beam erecting equipment 41 and the second beam erecting equipment 42.

As shown in fig. 9, after the first span 51 and the second span 52 are erected, the third span 53 is erected before the girder erection, specifically, the third span 53 is erected, or the third span is transported to the second span 52 by the transport equipment through three adjacent T-beams of the second span 52. First beam erecting equipment 41 lifts one end of a gun carrier 12, a beam transporting vehicle 11 needs to move backwards along with a T beam 2, at the moment, the gun carrier 12 needs to be dragged out, great risks exist in measures such as dragging by using a loader, and in order to solve the problem, the gun carrier and the beam transporting vehicle (except for a first span) transport an upper bridge from three adjacent T beams of the last span so that the beam erecting equipment can smoothly lift a beam, after two ends of the T beams are lifted, the beam transporting vehicle is driven out to a bridge head and is rewound along the running route of the gun carrier to drag the gun carrier out, and the phenomenon that other machines are reused to drag the gun carrier to increase bridge deck load and construction risks in the T beam lifting process is avoided.

As shown in fig. 9, when erecting spans other than the first span, the third span will be described as an example: the hoisting sequence of the third span 53 is as follows: 3-4 beams, 3-5 beams, 3-3 beams, 3-2 beams and 3-1 beams. First frame rail apparatus 41 is located in the middle of third span 52, and second frame rail apparatus 42 is located at the end of third span 53 remote from first span 51; the first girder apparatus 41 is used to hoist one end of the T-beam transported to the second bay 52 and move to the third bay 52, the second girder apparatus 42 hoists one end of the T-beam, and the first girder apparatus 41 hoists the other end of the T-beam to erect the T-beam on the third bay 53.

The second girder apparatus 42 stands on the right side of the third span 53 as shown in fig. 9, and the first girder apparatus 41 stands in the midspan (within the T-beam) of the third span and is located on the front side of the third span 53. The explanation here is given with 3-4 beams as an example: after the first girder erection equipment 41 lifts one end of the 3-4 girders on the gun carrier 12, the girder transporting vehicle 11 backs up the 3-4 girders slowly again, the first girder erection equipment 41 lifts the 3-4 girders to match with the girder transporting vehicle 11 and backs up to a rope changing point P far away from the second span 52, the second girder erection equipment 42 hangs one end of the 3-4 girders lifted by the first girder erection equipment 41, the first girder erection equipment 41 moves the lifting point to the girder transporting vehicle 11 and lifts the other end of the T-girder 2, finally the T-girder 2 is lifted by the first girder erection equipment 41 and the second girder erection equipment 42, and the 3-4 girders, the 3-5 girders, the 3-3 girders, the 3-2 girders and the 3-1 girders are lifted in place in sequence according to the same method.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method of transporting a girder erection beam suitable for a small radius curve section, comprising the steps of:

2. The method for girder erection suitable for a section of small radius curve of claim 1, wherein said step of dividing the transportation path into the first section, the second section and the third section in turn according to the road condition information of the transportation path between the pre-selected precast beam yard and the road to be erected further comprises:

selecting the transport equipment according to the weight of the T-beam;

3. The method of claim 2, wherein after the step of flattening and compacting the transportation path, the method further comprises:

4. The method of transporting a girder erection beam for a small radius curve section as claimed in claim 1, wherein the step of making the transportation equipment loaded with T-beam before the first section is driven in reverse includes:

5. The method of claim 4, wherein after the step of providing a first chainfall structure to secure to the transportation apparatus at a location on the T-beam adjacent to both sides of the roadway of the transportation path, the method further comprises: and arranging second inverted chain structures at the positions, close to the head of the transportation equipment, of the T beam and at the positions, close to the tail of the transportation equipment, of the T beam so as to be fixed on the transportation equipment, so that the T beam carried on the transportation equipment is transported and reinforced.

6. The method for transporting a girder frame beam suitable for a small radius curve section according to claim 1, wherein a sleeper hanger is provided at a rear portion of the transporting apparatus, the sleeper hanger includes locking members and a sleeper, and the sleeper is fixed at the rear portion of the transporting apparatus by the locking members; and when the retaining member is opened, the sleeper can fall on the transportation path to limit the rear wheels of the transportation equipment.

7. The method for erecting a girder for transporting a girder for a small radius curve section according to claim 1, wherein the step of selecting a preset erecting method according to topographic information of the road on which the girder is to be erected is preceded by the method further comprising: and widening and compacting the field around the to-be-erected beam road.

8. The method for transporting a girder according to any one of claims 1 to 7, wherein the girder installation includes a first girder installation and a second girder installation, and a loading threshold of the first girder installation is greater than a loading threshold of the second girder installation;

9. The method for transporting a girder erection beam suitable for a small radius curve section of claim 8, wherein the step of hoisting both ends of two T-beams to be erected at both sides of the first span by the first and second girder erection devices, respectively, further comprises: erecting a T-shaped beam on the second span;

10. The method of transporting a girder erection beam for a small radius curve section as claimed in claim 9, wherein after said transporting the T-beam for the third span to the second span by three adjacent T-beams of the second span further comprises: