A side precast yard beam erecting construction method

Abstract

The application provides a side precast field beam erecting construction method, and the specific steps are as follows: step one: erecting a gantry crane track support, erecting a first hole precast beam by using the gantry crane, and reinforcing and connecting the erected precast beam; step two: laying a transverse bridge direction walking track on the top surface of the erected precast beam, and erecting a beam stopping platform in the large mileage direction; step three: assembling a bridge erecting machine on the top surface of the erected precast beam, removing the gantry crane track support on the small mileage side, and performing a hole passing operation after the bridge erecting machine is assembled; in the application, the first hole precast beam is erected by using the gantry crane, and the rest of the precast beams are erected by using the bridge erecting machine, and the erection methods of the holes are basically the same. In the process of erecting the precast beam, the bridge surface beam carrying flat car follows the bridge direction track synchronously, the beam carrying flat car reversing mode of the application is simple to operate, fast and convenient to reverse, and the construction time is effectively saved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of precast beam erection construction, and particularly relates to a side precast yard beam erection construction method. BACKGROUND

[0002] The most commonly used method for precast beam erection is to use a beam transport truck in combination with a bridge erecting machine for construction. This method is more commonly used in relatively flat and open areas, and the technology is relatively mature, but it also has certain limitations.

[0003] Patent No. CN 110886233 A discloses a construction method for connecting T-beams of a bridge, which comprises the following steps: S1, placing a beam transport truck and transporting a beam, using a gantry crane to lift the beam by a bottom lifting method and horizontally moving the beam to above the beam transport trolley, and then stably lowering the beam to make the transverse diaphragms at the front and rear ends of the T-beam fall on the support beams of the truck; S2, erecting the beam; and S3, installing a beam equipment, laying a slide on the bent cap, installing a beam support on the slide, supporting the T-beam on the beam support, and using a jack to push the beam support to horizontally move the side beam from the middle of the bent cap to the left and right side beam positions. The application solves the technical problems of high safety risk, high cost and long construction period caused by the use of a large crane or newly constructed access for transportation under the condition that the height of the conventional T-beam is high and the construction area is narrow.

[0004] The characteristics of the beam transport truck make it impossible to perform turning operations in a narrow space. In mountainous areas with large terrain undulations, the site is limited and cannot provide sufficient safe transportation conditions for the truck. When the precast yard is set on one side of the bridge axis, the conventional beam erection method cannot be used for construction, and the problem can be solved by optimizing the beam erection method.

[0005] Therefore, the present application provides a side precast yard beam erection construction method, which saves construction cost, optimizes construction process and reduces construction safety risk. SUMMARY

[0006] In order to overcome the problem that the conventional beam erection method cannot be used for construction when the precast yard is set on one side of the bridge axis, the present application provides a side precast yard beam erection construction method, which saves construction cost, optimizes construction process and reduces construction safety risk.

[0007] The technical solution adopted by the present application is as follows:

[0008] A side precast yard beam erection construction method, the specific steps of which are as follows:

[0009] Step 1: erecting a gantry crane rail support, erecting a first-hole precast beam using the gantry crane, and reinforcing and connecting the erected precast beam;

[0010] Step two: laying a transverse bridge walking track on the top surface of the erected precast beam, and setting up a beam stopping platform in the large mileage direction;

[0011] Step three: assembling a bridge erecting machine on the top surface of the erected precast beam, and removing the gantry crane track support on the small mileage side; after the bridge erecting machine is assembled, the hole passing operation is performed;

[0012] Step four: moving the bridge erecting machine out of the transverse bridge walking track position;

[0013] Step five: lifting the precast beam by the gantry crane, and moving the beam carrying flat car along the transverse bridge walking track to the intersection with the longitudinal bridge walking track;

[0014] Step six: lifting the beam carrying flat car and the precast beam as a whole by the jack arranged on the beam carrying flat car, and turning the walking system on the beam carrying flat car by 90°, so that the beam carrying flat car walks in the large mileage direction;

[0015] Step seven: walking the beam carrying flat car with the precast beam to the beam stopping platform, and then moving the bridge erecting machine to the front of the beam carrying flat car;

[0016] Step eight: after the bridge erecting machine is positioned, the beam carrying flat car walks in the longitudinal bridge direction, feeds the beam from the rear of the bridge erecting machine, and erects the precast beam;

[0017] Step nine: after the precast beam is erected in place and is supported and stabilized, the fifth to eighth steps are repeated to complete the erection of the precast beam for each span, and then the beam stopping platform and the gantry crane track support on the large mileage side are removed;

[0018] Step ten: when the precast beams for the remaining holes are erected, the beam carrying flat car walks to the intersection of the transverse and longitudinal bridge walking tracks, is lifted and turned, and then directly walks in the longitudinal bridge direction to the rear of the bridge erecting machine to perform the feeding operation and erect the precast beam, thereby completing the erection of the entire precast beam.

[0019] In step two, the beam stopping platform is set up at the large mileage direction end of the erected precast beam by using steel pipe piles and section steels.

[0020] The beam stopping platform comprises a bearing beam, steel pipe columns, flat links, inclined braces, distribution beams, platform tracks and guardrails, the steel pipe columns are multiple, the adjacent steel pipe columns are connected by the flat links and the inclined braces, the bearing beam is arranged at the upper end of the steel pipe columns, the distribution beams are arranged at the upper end of the bearing beam, the platform tracks are arranged on the distribution beams, and the guardrails are arranged around the distribution beams.

[0021] In step six, the walking system comprises walking wheels and a walking track, and the walking wheels move along the walking track.

[0022] The step two is characterized in that: the walking track of the beam transporting flat car is laid from the precast field to the top surface of the web of the erected precast beam in the cross-bridge direction, and the walking track of the beam transporting flat car is laid from the end of the beam stopping platform to the small mileage end of the erected precast beam in the along-bridge direction, a movable track with a length of 20 cm is reserved at the intersection of the cross-bridge and along-bridge walking tracks, and all the other tracks are fixed.

[0023] The movable track is connected with the fixed track near the intersection of the cross-bridge and along-bridge walking tracks through a connecting plate and a bolt.

[0024] The advancing direction of the bridge erecting route is the small mileage, and vice versa.

[0025] The bridge erecting machine comprises a bridge erecting machine body, a front support leg, a middle support leg, a rear support leg and a trolley, the front support leg, the middle support leg and the rear support leg are arranged at the lower end of the bridge erecting machine body, the trolley is two, and is arranged on the bridge erecting machine body and can move linearly on the bridge erecting machine body.

[0026] In the step four, the bridge erecting machine moves in the along-bridge direction through the front support leg, the middle support leg and the rear support leg.

[0027] The walking track of the beam transporting flat car is fixed on the top surface of the precast beam through embedded track fixing steel bars.

[0028] The beneficial effects of the present application are as follows:

[0029] The present application crosses a bridge pier through the erection of a gantry crane track support, erects a first hole precast beam by using the gantry crane, and erects a temporary beam stopping platform in the large mileage direction, so as to provide a platform for the beam transporting trolley to move and reverse direction smoothly from the rear of the bridge erecting machine.

[0030] The present application erects a beam stopping platform by using steel pipe piles and section steels at the large mileage direction end of the erected precast beam. The temporary beam stopping platform in the present application needs to have enough strength and rigidity to enable the beam transporting flat car to walk on the platform track of the beam stopping platform, the platform track ensures that the beam transporting flat car walks in the along-bridge direction without tilting, the limiting plate arranged near the end of the platform track ensures that the beam transporting flat car does not derail and always walks in the corresponding track.

[0031] The present application is in the prefabricated beam of the beam surface of the erected completed girder erection bridge machine, and the beam transfer car is used again through the laying transverse and longitudinal walking track to realize the feeding from the prefabricated field to the bridge girder machine. In the present application, the beam transfer car can change the driving direction through the movable track and the jack. The gantry crane lifts the prefabricated beam and places it on the beam transfer car, starts the beam transfer car, and makes the beam transfer car move to the transverse and longitudinal track intersection through the transverse walking track, and then uses the jack to lift the prefabricated beam and the beam transfer car as a whole, and then turns the beam transfer car walking wheel by 90° and places it on the bridge surface of the longitudinal walking track. The whole reversing mode is simple, fast and convenient, and effectively saves the construction time. BRIEF DESCRIPTION OF DRAWINGS

[0032] The present application will be further described in detail below with reference to the drawings.

[0033] Figure 1 The plane layout of the present application is shown.

[0034] Figure 2 The longitudinal and transverse section of the beam platform is shown.

[0035] Figure 3 The transverse bridge direction of the gantry crane installation first span (first hole) T-shaped prefabricated beam is shown.

[0036] Figure 4 The construction of the girder erection machine after the completion of the present application is shown.

[0037] Figure 5 The hole passing construction of the girder erection machine in the present application is shown.

[0038] Figure 6 The girder erection machine in the present application is shown after the completion of the hole passing operation.

[0039] Figure 7 The girder erection machine in the present application is shown outside the track area.

[0040] Figure 8 The prefabricated beam is transported to the bridge surface of the prefabricated beam in the present application.

[0041] Figure 9 The feeding beam operation preparation in the present application is shown.

[0042] Figure 10 The feeding beam operation construction in the present application is shown.

[0043] Figure 11 The girder erection machine lifting beam operation construction in the present application is shown.

[0044] Figure 12 The prefabricated beam is erected through the girder erection machine in the present application.

[0045] In the drawings, reference signs are:

[0046] 1, gantry crane track; 2, transverse bridge walking track; 3, beam erection platform; 4, bridge girder erection machine; 5, gantry crane track support; 6, gantry crane; 7, beam transport flat car;

[0047] 301, load-bearing beam; 302, steel pipe stand column; 303, flat link; 304, inclined brace; 305, distribution beam; 306, track; 307, guardrail;

[0048] 401, front leg of bridge girder erection machine; 402, middle leg of bridge girder erection machine; 403, rear leg of bridge girder erection machine; 404, overhead traveling crane. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0050] Various structural schematic diagrams according to the disclosed embodiments of the present application are shown in the drawings. These diagrams are not drawn to scale, in which some details are enlarged for the purpose of clear expression, and some details can be omitted. The shapes of various regions, layers and their relative size and positional relationship shown in the diagrams are only exemplary, and in actuality, there can be deviations due to manufacturing tolerances or technical limitations, and regions / layers with different shapes, sizes and relative positions can be additionally designed by those skilled in the art according to actual needs.

[0051] Embodiment 1

[0052] In order to overcome the problem that the conventional girder erection method cannot be used for construction when the prefabrication yard is arranged on one side of the bridge axis, the present application provides a side prefabrication yard girder erection construction method as shown in Figures 1-12 The present application saves construction cost, optimizes construction process and reduces construction safety risk.

[0053] A side prefabrication yard girder erection construction method, the specific steps are:

[0054] Step one: erecting a gantry crane track support 5, using a gantry crane 6 to erect a first hole prefabricated beam, and reinforcing and connecting the erected prefabricated beam;

[0055] Step two: laying a transverse bridge walking track 2 on the top surface of the erected prefabricated beam, and erecting a beam erection platform 3 in the large mileage direction;

[0056] Step three: assemble the bridge erecting machine 4 on the top surface of the erected precast beam, remove the gantry crane track support 5 at the small mileage side, and perform the hole passing operation after the completion of the assembly of the bridge erecting machine 4;

[0057] Step four: move the bridge erecting machine 4 transversely out of the position of the transverse bridge walking track 2;

[0058] Step five: use the gantry crane 6 to lift the precast beam to the beam transporting flat car 7, and move the beam transporting flat car 7 along the transverse bridge walking track 2 to the intersection with the longitudinal bridge walking track;

[0059] Step six: use the jacks arranged on the beam transporting flat car 7 to lift the beam transporting flat car 7 and the precast beam as a whole, and adjust the walking system on the beam transporting flat car 7 by 90°, so that the beam transporting flat car walks in the direction of the large mileage;

[0060] Step seven: the beam transporting flat car 7 carries the precast beam to walk towards the beam stopping platform 3, and then the bridge erecting machine 4 is moved transversely to the front of the beam transporting flat car 7;

[0061] Step eight: after the bridge erecting machine 4 is positioned, the beam transporting flat car 7 walks in the longitudinal direction of the bridge, feeds the beam from the rear of the bridge erecting machine 4, and erects the precast beam;

[0062] Step nine: after the precast beam is erected in place and is supported and stabilized, the fifth to eighth steps are repeated to complete the erection of the precast beam for each span, and then the beam stopping platform 3 and the gantry crane track support 5 at the large mileage side are removed;

[0063] Step ten: when the precast beams for the remaining holes are erected, the beam transporting flat car 7 walks to the intersection of the transverse and longitudinal bridge walking tracks, is directly adjusted to walk in the longitudinal direction of the bridge after being lifted and turned, is positioned behind the bridge erecting machine 4, performs the feeding operation, and erects the precast beam, so that the erection of the entire precast beam is completed.

[0064] In the embodiment, as shown in Figure 1 for the convenience of description, several pier columns are numbered, 6# pier, 7# pier, 8# pier, 9# pier column, and the 6# pier is in the direction of the small mileage.

[0065] In the present application, the gantry crane track support 5 is provided with the gantry crane track 1, and the gantry crane 6 moves along the gantry crane track 1. In the present application, the first hole of the precast beam is erected by the gantry crane 6, and the remaining precast beams are erected by the bridge erecting machine 4, and the erection methods of the holes are basically the same. In the process of erecting the precast beam, the longitudinal walking track on the bridge deck is synchronously followed.

[0066] The specific construction process of the present application is as follows:

[0067] First, as shown in Figure 3 , the present application first uses the gantry crane 6 to erect the precast beam between the 8# pier and the 7# pier;

[0068] Second, as shown in Figure 4As shown, a temporary beam erection platform 3 is erected at the large mileage side, and an assembling bridge machine 4 is assembled on the top surface of the beam erection platform 3 and the prefabricated beam that has been erected, and the track support 5 of the gantry crane at the small mileage side is removed;

[0069] Third, as shown in Figure 5 As shown, after the assembling of the bridge machine 4 is completed, the bridge machine 4 walks at least 15 m in the large mileage direction;

[0070] Fourth, as shown in Figure 6 As shown, the crown block 404 of the bridge machine 4 is walked to the vicinity of the 7# pier, and the rear crown block 404 is anchored by using the prefabricated beam erected on the 7# pier and the 8# pier, and then the hole is continuously passed to the next prefabricated beam erection position;

[0071] Fifth, as shown in Figure 7 As shown, the bridge machine 4 is transversely moved to the other span, that is, the front end of the bridge machine 4 is located on the 6# pier;

[0072] Sixth, as shown in Figure 8 As shown, then the prefabricated beam is lifted from the prefabricated field to the beam transport flat car 7 by using the gantry crane 6, and the beam transport flat car 7 walks to the middle beam position;

[0073] Seventh, as shown in Figure 9 As shown, the beam transport flat car 7 and the prefabricated beam are lifted as a whole by using the jack, the walking system of the beam transport flat car 7 is turned by 90°, so that the beam transport flat car 7 is transferred from the transverse bridge to the track on the longitudinal bridge, and the beam transport flat car 7 can walk along the longitudinal bridge;

[0074] Eighth, as shown in Figure 10 As shown, the beam transport flat car 7 walks on the beam erection platform 3 with the prefabricated beam, then the bridge machine 4 is transversely moved from the right span to the left span, so that the front end of the bridge machine 4 is located on the 6# pier, in the present application, the pier column at the left end is the left span, and the pier column at the right end is the right span;

[0075] Ninth, as shown in Figure 11 As shown, after the bridge machine 4 is in place, the beam transport flat car 7 walks in the small mileage direction, the prefabricated beam is fed from the rear of the bridge machine 4, the hole between the 7# pier and the 6# pier is erected, and the prefabricated beam is erected;

[0076] Tenth, as shown in Figure 12 As shown, after the prefabricated beam between the 7# pier and the 6# pier is erected, the fifth to the eighth are repeated, and the prefabricated beam erection of the hole is completed.

[0077] Eleventh, after completion, the temporary beam erection platform 3 is removed, and the prefabricated beam erection of other holes on the bridge line is sequentially completed by the bridge machine 4.

[0078] In the present invention, the prefabricated beam is a T-shaped prefabricated beam. In this application, the temporary beam stopping platform 3 is detachable. When the length of the prefabricated beam deck that has been erected is insufficient, the temporary beam stopping platform 3 is set up to ensure that the prefabricated beam transported by the beam transport flat car 7 in the prefabrication yard is turned 90 degrees on the transverse track and enters the forward track. The length of the prefabricated beam deck that has been erected plus the temporary beam stopping platform 3 is sufficient, ensuring that the beam transport flat car 7 can effectively feed the beam to the rear of the bridge erection machine 4, ensuring the smooth construction of the subsequent bridge erection machine 4.

[0079] The entire reversing method of the present invention is simple to operate, quick and convenient, and effectively saves construction time. The present invention saves construction costs, optimizes construction technology, and reduces construction safety risks.

[0080] Example 2:

[0081] Based on Example 1, in this embodiment, preferably, in the step 2, a beam stopping platform 3 is constructed using steel pipe piles and steel sections at the end of the erected prefabricated beam in the direction of large mileage.

[0082] Preferably, the beam stopping platform 3 includes a load-bearing beam 301, a steel pipe column 302, a flat joint 303, a diagonal brace 304, a distribution beam 305, a platform track 306 and a guardrail 307. There are multiple steel pipe columns 302, and adjacent steel pipe columns 302 are connected by flat joints 303 and diagonal braces 304; the load-bearing beam 301 is arranged at the upper end of the steel pipe column 302, and the distribution beam 305 is arranged at the upper end of the load-bearing beam 301; the platform track 306 is arranged on the distribution beam 305; and the guardrail 307 is arranged around the distribution beam 305.

[0083] like Figure 2 As shown in the figure, the left figure is a front view of the beam stopping platform, and the right figure is a side view. The temporary beam stopping platform 3 in the present invention must have sufficient strength and rigidity to allow the beam transport flat car 7 carrying the precast beam to travel on the platform track 306 of the beam stopping platform 3. The platform track 306 ensures that the beam transport flat car 7 travels along the direction of the bridge without tilting. A limit plate is provided near the end of the platform track 306 to ensure that the beam transport flat car 7 does not derail and ensures that the beam transport flat car 7 always travels within the corresponding track.

[0084] Preferably, in step 6, the walking system includes walking wheels and walking tracks, and the walking wheels move along the walking tracks. In the present invention, the walking system is a prior art and will not be further described in the present invention.

[0085] Preferably, in step two, the beam transport flat car 7 is laid on the bridge transverse walking track 2 to the top surface of the erected precast beam, and the beam transport flat car 7 is laid on the bridge longitudinal walking track to the erected precast beam at the small mileage end, a movable track of 20 cm long is reserved at the intersection of the bridge transverse and longitudinal walking tracks, and the rest of the tracks are fixed.

[0086] Preferably, the movable track is connected with the fixed track near the intersection of the bridge transverse and longitudinal walking tracks by a connecting plate and a bolt.

[0087] Preferably, the forward direction of the bridge erection route is the small mileage, and vice versa.

[0088] Preferably, the bridge erecting machine 4 comprises a bridge erecting machine body, a bridge erecting machine front leg 401, a bridge erecting machine middle leg 402, a bridge erecting machine rear leg 403 and a crown block 404, the bridge erecting machine front leg 401, the bridge erecting machine middle leg 402 and the bridge erecting machine rear leg 403 are arranged at the lower end of the bridge erecting machine body, and the two crown blocks 404 are arranged on the bridge erecting machine body and can move linearly on the bridge erecting machine body.

[0089] Preferably, in step four, the bridge erecting machine 4 moves in the bridge longitudinal direction through the bridge erecting machine front leg 401, the bridge erecting machine middle leg 402 and the bridge erecting machine rear leg 403.

[0090] In the present application, the bridge erecting machine front leg 401, the bridge erecting machine middle leg 402 and the bridge erecting machine rear leg 403 are supported at different positions, so that the bridge erecting machine body moves in the bridge longitudinal direction.

[0091] The walking track of the beam transport flat car 7 is fixed on the top surface of the precast beam by embedding a track fixing steel bar in the top surface of the precast beam.

[0092] In the present application, the walking track of the beam transport flat car 7 is fixed on the top surface of the precast beam by the embedded track fixing steel bar, which ensures that the walking track of the beam transport flat car 7 follows the erection of the precast beam and ensures smooth construction.

[0093] In the present application, the first hole of the precast beam is erected by the gantry crane 6, and the rest of the precast beams are erected by the bridge erecting machine 4, and the erection methods of each hole are basically the same. During the erection of the precast beam, the bridge longitudinal walking track 5 on the bridge deck is followed synchronously.

[0094] The main construction process of the present application is as follows:

[0095] Step one: erecting the gantry crane track support 5, erecting the first hole precast beam by the gantry crane 5, as shown in Figure 1 , between the 8# pier and the 7# pier, and welding and reinforcing the connection of the erected precast beam;

[0096] To ensure the stability of the erected precast beam;

[0097] Step two: laying the transverse bridge walking track on the top surface of the erected precast beam, and setting up a temporary beam-stopping platform 3 in the large mileage direction of the bridge erection line, Figure 4 as shown in the figure;

[0098] Step three: assembling the bridge erection machine 4 on the surface of the erected beam, and removing the gantry crane track support 5 on the small mileage side; after the assembly of the bridge erection machine 4 is completed, the hole passing operation is performed; the hole passing operation is a mature technology, and will not be further described herein.

[0099] Step four: moving the bridge erection machine 4 out of the position of the transverse bridge walking track 2;

[0100] Step five: lifting the precast beam to the beam carrying flat car 7 by using the gantry crane 6; moving the beam carrying flat car 7 along the transverse bridge walking track 2 to the intersection with the longitudinal bridge walking track;

[0101] Step six: lifting the beam carrying flat car 7 and the precast beam as a whole by using the jacks arranged on the beam carrying flat car 7,

[0102] and turning the walking system on the beam carrying flat car 7 by 90°, so that the beam carrying flat car walks in the large mileage direction; step seven: walking the beam carrying flat car 7 with the precast beam to the beam-stopping platform 3, and then moving the bridge erection machine 4 to the front of the beam carrying flat car 7;

[0103] Step eight: after the bridge erection machine 4 is positioned, the beam carrying flat car 7 walks in the longitudinal bridge direction, feeds the beam from the rear of the bridge erection machine 4, and erects the precast beam;

[0104] Step nine: after the precast beam is erected in place and supported and stabilized, the fifth to eighth steps are repeated to complete the erection of the five-hole precast beam, and then the beam-stopping platform 3 and the gantry crane track support 5 on the large mileage side are removed.

[0105] Step ten: when the precast beams of the other holes are erected, the beam carrying flat car 7 walks to the intersection of the transverse and longitudinal bridge walking tracks, is directly lifted and turned to walk in the longitudinal bridge direction after the turning, and performs the beam feeding operation, and the bridge erection machine 4 also does not need to be moved to the other side in advance.

[0106] In the present application, the forward direction of the line is the large mileage, and vice versa; the pier column on the left of the forward direction is the left side, and the pier column on the right is the right side. In the present application, the precast yard is located on the left side of the line, and the walking track of the beam carrying flat car 7 is laid on the left side, so the beam carrying flat car 7 is first moved to the left side, and the bridge erection machine 4 needs to be moved to the right side to avoid the movement of the beam carrying flat car 7.

[0107] In the present invention, the bridge-erecting machine 4 is first moved to another position to make room for the beam transporting flat car 7, so that the beam transporting flat car 7 can move toward the beam stopping platform 3 until it can be staggered with the position of the bridge-erecting machine 4, and then the bridge-erecting machine 4 is moved to the front of the beam transporting flat car 7, and the beam transporting flat car 7 moves forward to feed the beam, thereby realizing the erection of prefabricated beams.

[0108] The present invention provides a side prefabrication yard beam erection construction method, which is to set up a gantry crane track bracket 5, span a bridge pier, use the gantry crane 6 to erect the first hole prefabricated beam, and set up a temporary beam parking platform for a beam transport flat car 3 in the mileage direction; assemble the bridge erection machine 4 on the erection beam surface, and then use the laid track to convert the direction of the beam transport flat car running track to realize the transportation of the beam transport flat car 7 from the prefabrication yard to the bridge deck bridge erection machine 4 to feed the beam. The beam transport flat car 7 has flexible steering operation and can change the direction of the flat car by changing the track direction and the cylinder jack; after the prefabricated T-beam is cast and tensioned and meets the erection conditions, the gantry crane 6 lifts the beam from the beam storage area and places it on the beam transport flat car 7, starts the beam transport flat car 7 to move the T-beam horizontally to the cross intersection of the horizontal and forward directions of the walking track of the bridge deck beam transport, and then uses the vehicle-mounted jack to lift the T-beam and flat car as a whole, and then turns the flat car running wheel 90 degrees and places it on the walking track of the bridge deck beam transport in the forward direction. The entire reversing process simply involves connecting the movable rails at the intersection of the transverse and longitudinal tracks at different locations using connecting plates and bolts, completing the transition of the beam transport flat car 7 from the transverse bridge track 2 to the longitudinal bridge track. The steerable beam transport flat car 7 is prior art and will not be further described in this invention. The steering of the beam transport flat car 7 can be achieved by setting and positioning the movable rails at the intersection of the transverse and longitudinal tracks according to the desired angle to ensure smooth reversal.

[0109] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0110] It should also be understood that the terms used in the present specification are only for the purpose of describing particular embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise.

[0111] The above examples are only illustrative of the present application and do not constitute a limitation to the protection scope of the present application, and any design identical or similar to the present application falls within the protection scope of the present application. The device structure and method steps not described in detail in the present application are prior art, and will not be further described in the present application.

Claims

1. A method for erecting beams in a side prefabrication yard, characterized by: The specific steps are: Step 1: Setting up a gantry crane track support (5), using a gantry crane (6) to set up the first hole of prefabricated beams, and reinforcing and connecting the set up prefabricated beams; Step 2: laying a transverse bridge direction running track (2) on the top surface of the erected precast beam, and setting up a beam stopping platform (3) in the direction of large mileage; in said step 2, laying the transverse bridge direction running track (2) from the precast yard to the top surface of the web of the erected precast beam, laying the beam transport flat car (7) along the bridge direction running track from the end of the beam stopping platform (3) to the end of the erected precast beam with small mileage, leaving a 20cm long movable track at the intersection of the transverse and along bridge direction running tracks, and fixing all other tracks; the movable track and the fixed track near the intersection of the transverse and along directions are connected by connecting plates and bolts; Step 3: Assemble the bridge erection machine (4) on the top surface of the prefabricated beam that has been erected, remove the gantry crane track bracket (5) on the small mileage side, and perform the through-hole operation after the bridge erection machine (4) is assembled; Step 4: The bridge erection machine (4) moves laterally out of the cross bridge to the position of the walking track (2); Step 5: Use the gantry crane (6) to lift the prefabricated beam to the beam transport flat car (7), and move the beam transport flat car (7) along the transverse bridge running track (2) to the intersection with the longitudinal bridge running track; Step 6: Use the jack provided on the beam transport flat car (7) to lift the beam transport flat car (7) and the prefabricated beam as a whole, and turn the traveling system on the beam transport flat car (7) 90 degrees to make the beam transport flat car move in the direction of greater mileage; Step 7: The beam transport flat car (7) carries the prefabricated beam to the beam parking platform (3), and then the bridge erection machine (4) moves horizontally to the front of the beam transport flat car (7); Step 8: After the bridge erection machine (4) is in place, the beam transporting flat car (7) moves along the bridge direction, feeds beams from the rear of the bridge erection machine (4), and erects prefabricated beams; Step 9: After the precast beam is erected and supported stably, repeat steps 5 to 8 to complete the erection of the precast beams of the hole one by one, and then remove the beam stop platform (3) and the gantry crane track bracket (5) on the long mileage side; Step 10: When the remaining prefabricated beams are erected, the beam transport flat car (7) moves to the intersection of the horizontal and longitudinal travel tracks, lifts and turns, and then moves directly to the rear of the bridge erection machine (4) along the bridge direction to carry out the beam feeding operation and erect the prefabricated beams, thereby completing the erection of the entire prefabricated beams; During the erection of precast beams, the walking tracks along the bridge deck follow synchronously.

2. A method for erecting beams in a side prefabrication yard according to claim 1, characterized in that: In the second step, a beam stopping platform (3) is constructed at the end of the erected prefabricated beam in the direction of long mileage using steel pipe piles and steel sections.

3. The method for erecting beams in a side prefabrication yard according to claim 2, characterized in that: The beam stopping platform (3) comprises a load-bearing beam (301), a steel pipe column (302), a flat joint (303), a diagonal brace (304), a distribution beam (305), a platform track (306) and a guardrail (307). There are multiple steel pipe columns (302), and adjacent steel pipe columns (302) are connected by flat joints (303) and diagonal braces (304). The load-bearing beam (301) is arranged at the upper end of the steel pipe column (302), and the distribution beam (305) is arranged at the upper end of the load-bearing beam (301). The platform track (306) is arranged on the distribution beam (305); and the guardrail (307) is arranged around the distribution beam (305).

4. The method for erecting beams in a side prefabrication yard according to claim 1, characterized in that: In step six, the walking system includes walking wheels and walking tracks, and the walking wheels move along the walking tracks.

5. The method for erecting beams in a side prefabrication yard according to claim 1, characterized in that: The forward direction of the bridge route is a short distance, and the reverse direction is a long distance.

6. The method for erecting beams in a side prefabrication yard according to claim 1, characterized in that: The bridge erection machine (4) comprises a bridge erection machine body, a front leg (401) of the bridge erection machine, a middle leg (402) of the bridge erection machine, a rear leg (403) of the bridge erection machine and an overhead crane (404). The front leg (401), the middle leg (402) and the rear leg (403) of the bridge erection machine are arranged at the lower end of the bridge erection machine body. There are two overhead cranes (404), both of which are arranged on the bridge erection machine body and can move linearly on the bridge erection machine body.

7. The method for erecting beams in a side prefabrication yard according to claim 1, characterized in that: In the step 4, the bridge-building machine (4) moves in the direction of the bridge through the front supporting legs (401), the middle supporting legs (402) and the rear supporting legs (403).

8. The method for erecting beams in a side prefabrication yard according to claim 1, characterized in that: The traveling track of the beam transport flat car (7) is fixed on the top surface of the prefabricated beam by pre-embedding track fixing steel bars on the top surface of the prefabricated beam.

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