CN110820572A - Integrated assembly construction method for prefabricated pier and main beam based on cable-stayed bridge girder erection machine - Google Patents
Integrated assembly construction method for prefabricated pier and main beam based on cable-stayed bridge girder erection machine Download PDFInfo
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Abstract
The invention belongs to the field of bridge construction engineering, and particularly relates to a prefabricated pier and prefabricated girder integrated assembly construction method based on a cable-stayed bridge girder erection machine, which comprises the following steps of: the construction method comprises the steps of preparing components in a factory, assembling and fixing the bridge girder erection machine on a construction site and erecting a bridge on the construction site. The prefabricated bridge pier sections, the prefabricated cap beams and the prefabricated main beams are transported to be in place through the pulleys, the assembly of the prefabricated bridge pier sections at the front end of the bridge girder erection machine and the assembly of the prefabricated cap beams are firstly completed, then the front end support of the bridge girder erection machine is anchored at the top of the cap beams, the transportation and the erection of the prefabricated main beams are completed, and finally the integrated erection of the prefabricated main beams and the prefabricated bridge piers is completed. The bridge erecting machine is easy to install and simple and convenient to construct, the bridge erecting machine is reliably connected with a bridge, the technical problem that the transportation and hoisting of the prefabricated pier sections and the prefabricated main beams are difficult in the construction of the prefabricated high pier bridge in the complex mountain area environment is solved, the bridge construction speed can be accelerated, and the bridge erecting machine has remarkable economic benefits.
Description
Technical Field
The invention belongs to the field of bridge construction engineering, and particularly relates to a prefabricated pier and prefabricated main beam integrated assembling construction method based on a cable-stayed bridge girder erection machine, and further relates to the cable-stayed bridge girder erection machine. The invention is suitable for the integrated construction of the prefabricated bridge pier and the prefabricated main beam.
Background
Under the background of rapid development of the current society, the restriction of traffic can cause huge economic loss. Therefore, the problem encountered by bridge reconstruction performed on the key nodes of the urban road network is not the bridge itself, but how to reduce the influence on traffic. The rapid bridge construction technology is developed, and compared with the traditional bridge construction mode, the rapid bridge construction method has the advantages of good member factory processing quality durability, small construction safety risk, small dust emission and noise pollution, high construction speed, small influence on traffic and the like.
At present, the existing engineering for assembling the bridge piers by adopting the bridge prefabrication and assembly technology is mainly middle-low piers, the assembly sections are fewer, the construction sites are mostly in wider areas of construction sites, and the limitation of transportation and hoisting construction machinery is not required to be considered; under the condition of complex terrain such as mountainous areas, the bridge piers constructed are high, and equipment with high large-scale transportation and hoisting capacity is difficult to enter the construction site. Based on the above problems, it is necessary to provide an integrated assembling construction method for a prefabricated pier and a prefabricated main beam based on a cable-stayed bridge girder erection machine.
Disclosure of Invention
The invention aims to provide an integrated assembling construction method of a prefabricated pier and a prefabricated main beam based on a cable-stayed bridge girder erection machine, which can realize the rapid assembling construction of a prefabricated high pier bridge in a complex environment of a mountainous area; the invention also aims to provide a cable-stayed bridge girder erection machine.
The technical scheme provided by the invention for realizing the aim is as follows: an integrated assembly construction method of a prefabricated pier and a prefabricated main beam based on a cable-stayed bridge girder erection machine; the construction method is characterized in that the construction of the prefabricated bridge pier, the prefabricated cap beam and the prefabricated main beam is carried out by using a cable-stayed bridge girder erection machine according to the following steps: preparing a component in a factory, assembling and fixing a bridge girder erection machine on a construction site, and erecting a bridge on the construction site; the method specifically comprises the following steps:
1.1 preparing a cable-stayed bridge girder erection machine component: the system comprises a main truss, a cable tower, a stay cable, a high-strength steel bar, a bolt, an A pulley, a B pulley, a C pulley, a D pulley, a main lifting mechanism, upper I-shaped steel and lower I-shaped steel; the four pulleys are respectively provided with a main lifting mechanism in a matching way;
1.2 preparing a bridge member: prefabricating pier sections, prefabricated cap beams and prefabricated main beams.
respectively erecting lower I-shaped steel at the front end and the rear end of the bridge in the longitudinal direction along the built bridge section, assembling a main truss on the lower I-shaped steel, and fixing a rear anchor point and a cable tower fulcrum on the built bridge section through a high-strength steel bar and a bolt; then four groups of upper I-beams are arranged on the main truss, each group of upper I-beams are connected with the main truss in a sliding way and can move longitudinally along the main truss, a cable tower is arranged on the main truss, and the cable tower is fixedly connected with the main truss by using a stay cable; the pulley A, the pulley B, the pulley C and the pulley D which are respectively matched with the main lifting mechanism are sequentially arranged on the four groups of upper I-beams from the front end, the pulley A and the pulley B are positioned in front of the cable tower, and the pulley C and the pulley D are positioned behind the cable tower; the four pulleys can longitudinally slide and can also transversely slide on the upper I-shaped steel. When the first span of construction, can draw the installation of bridge girder erection machine to one side and fix and construct on the road bed, no longer give unnecessary details.
3.1 assembling prefabricated bridge pier segments: adopt fortune roof beam car to transport prefabricated pier segment to the roof beam front end, the B coaster passes through the main truss and removes to the roof beam front end, transfers main hoist mechanism to hoist prefabricated pier segment back, moves forward to the pier position, transfers prefabricated pier segment to assemble the construction, repeats other segment constructions of pier of this step completion.
3.2, prefabricated cap beam installation construction: hoisting the prefabricated cap beam after the construction of the pier sections is finished, wherein the construction method of assembling the prefabricated cap beam with the prefabricated pier sections in the step 3.1 is the same; and repeating the steps until the construction of all lower structures of the bridge is completed, and then putting down the front support point to support and anchor on the prefabricated cap beam to prepare for the construction of the prefabricated main beam.
3.3 girder installation construction: the girder transporting vehicle transports the prefabricated girder to a hoisting position, firstly, the prefabricated girder is hoisted by the C pulley and the D pulley and slowly moves forwards, after the front end of the prefabricated girder is sent to the other side of the cable tower, the B pulley is hoisted, the C pulley temporarily stops working, idles to the vicinity of the D pulley and hoists again, and the D pulley stops working; at the moment, the prefabricated main beam is hoisted by the pulley B and the pulley C together to move forwards continuously, when the pulley C moves to the cable tower, the pulley A replaces the pulley B, the pulley B idles to the cable tower to replace the pulley C, the pulley C quits working, and the prefabricated main beam is hoisted to the designed position by the pulley A and the pulley B and then falls to the beam; the hoisting position is ensured to be accurate.
And (3) after the integrated construction of the prefabricated main beam and the prefabricated bridge pier of the span is completed, moving the bridge girder erection machine forwards to the next span and repeating the step 3, and completing the construction of the whole fully prefabricated assembled bridge span by span.
The utility model provides a cable-stayed bridge girder erection machine, includes main truss, cable tower, suspension cable and the supporting coaster that has main hoist mechanism, its characterized in that: the steel plate also comprises lower I-shaped steel and upper I-shaped steel; the pulleys are four sets; lower I-beams are transversely arranged at the front end and the rear end of a roadbed or a built bridge section along a bridge, a main truss is arranged on the lower I-beam, four groups of upper I-beams are dispersedly arranged on the main truss, the upper I-beams are in sliding connection with the main truss and can move longitudinally along the main truss, cable towers are arranged on the main truss and between the second group of upper I-beams and the third group of upper I-beams, and the cable towers are fixedly connected with the main truss through stay cables; the rear anchor point and the cable tower fulcrum are fixed on the built bridge section through high-strength steel bars and bolts, and pulleys are respectively installed on four groups of upper I-shaped steel on the front and the rear of the cable tower.
The front end of the text refers to the advancing direction of the bridge.
The prefabricated pier sections, the prefabricated cap beams and the prefabricated main beams are transported to be in place through the pulleys, the assembly of the prefabricated pier sections at the front end of the bridge girder erection machine and the assembly of the prefabricated cap beams are firstly completed, then the front end support of the bridge girder erection machine is anchored at the top of the cap beams, the transportation and the erection of the prefabricated main beams are completed, and finally the integrated erection of the prefabricated main beams and the prefabricated piers is completed.
In the prior art, the bridge girder erection machine is only used for completing the construction of the prefabricated main girder, and the invention realizes that the prefabricated bridge pier, the prefabricated cap beam and the prefabricated main girder are all constructed by using the cable-stayed bridge girder erection machine. The bridge erecting machine is easy to install and simple and convenient to construct, the bridge erecting machine is reliably connected with a bridge, the technical problem that the transport and hoisting of the prefabricated pier sections and the prefabricated main beams are difficult in the construction of high-pier bridges in complex mountain areas is solved, the bridge construction speed can be accelerated, and the bridge erecting machine has remarkable economic benefits.
Drawings
FIG. 1 is an isometric view of the present invention;
FIG. 2 is a schematic elevation view of the present invention;
FIG. 3 is a side view of FIG. 1;
FIG. 4 is a hoisting diagram of a prefabricated bridge pier;
FIG. 5 is a diagram of the prefabricated bridge pier in place assembly;
FIG. 6 is a drawing of a D pulley and a C pulley hoisting precast beam;
FIG. 7 is a drawing of a prefabricated beam hoisted by a tackle D and a tackle B;
FIG. 8 is a diagram of a precast beam hoisted by a tackle C and a tackle B;
FIG. 9 is a front view of the precast beam;
FIG. 10 is a drawing of a precast beam hoisted by the pulley C and the pulley A;
FIG. 11 is a diagram of a precast beam hoisted by the tackle B and the tackle A;
FIG. 12 is a view of the precast beam as it moves forward;
fig. 13 is a precast beam installation diagram.
In the figure: the bridge structure comprises the following components, by weight, 1-prefabricated bridge pier, 2-prefabricated cap beam, 3-prefabricated main beam, 4-high-strength steel bar, 5-bolt, 6-bridge girder erection machine main truss, 7-cable tower, 8-stay cable, 9-A pulley, 10-B pulley, 11-C pulley, 12-D pulley, 13-rear anchor point, 14-cable tower fulcrum, 15-front fulcrum, 16-upper I-shaped steel, 17-lower I-shaped steel, 18-main lifting hook, 19-prefabricated bridge pier segment and 20-built bridge girder segment.
Detailed Description
A method embodiment; an integrated assembly construction method of a prefabricated pier and a prefabricated main beam based on a cable-stayed bridge girder erection machine; in this embodiment, a construction process of a simply supported 40m prefabricated T beam (i.e., a prefabricated main beam) is taken as an example, a prefabricated pier segment is 2.0m high, and a T beam is 2.5m high. The method comprises the following steps:
1.1 preparing a cable-stayed bridge girder erection machine component: the system comprises a main truss 6, a cable tower 7, a stay cable 8, a high-strength steel bar 4, a bolt 5, an A pulley 9, a B pulley 10, a C pulley 11, a D pulley 12, a main lifting mechanism 18, an upper I-shaped steel 16 and a lower I-shaped steel 17; the four pulleys are respectively provided with a main lifting mechanism in a matching way, and the models of the four pulleys are the same;
1.2 preparing a bridge member: prefabricated pier segments 19, prefabricated cap girders 2 and prefabricated T girders 3, and other installation tools.
see fig. 1-4; respectively erecting lower I-shaped steel 17 at the front end and the rear end of the bridge in the longitudinal direction along the built bridge section 20, assembling a main truss 6 on the lower I-shaped steel, and fixing a rear anchor point 13 and a cable tower fulcrum 14 on the built prefabricated T-shaped beam 3 through a high-strength steel bar 4 and a bolt 5; the high-strength steel bar 4 and the bolt 5 ensure that the bridge girder erection machine is reliably connected with the prefabricated T-shaped beam 3 which is built; then four groups of upper I-beams 16 are arranged on the main truss 6, the upper I-beams 16 of each group are in sliding connection with the main truss 6 and can move longitudinally along the main truss 6, cable towers 7 are arranged on the main truss 6 and between the second group of upper I-beams 16 and the third group of upper I-beams 16, the cable towers 7 are 5m away from the front end of the beam, and the cable towers 7 are fixedly connected with the main truss 6 by stay cables 8; sequentially mounting an A pulley 9, a B pulley 10, a C pulley 11 and a D pulley 12 which are respectively matched with a main lifting mechanism 18 on four groups of upper I-shaped steel from the front end of a beam, wherein the A pulley and the B pulley are positioned in front of a cable tower, and the C pulley and the D pulley are positioned behind the cable tower; the upper I-beam 16 provided with the pulleys longitudinally slides along the main truss 6, so that the four pulleys can longitudinally slide along the main truss 6 along with the upper I-beam 16 and can also transversely slide on the upper I-beam 16; the lower I-shaped steel 17 is slightly larger than the bridge width, so that enough construction space is ensured in the transverse direction.
3.1 assembling prefabricated bridge pier segments: see fig. 4 and 5; firstly, a girder transporting vehicle is adopted to transport the prefabricated pier segment 19 to the front end of a girder, the B pulley 10 moves to the front end of the girder through the main truss 6, the main lifting mechanism 18 is lowered to lift the prefabricated pier segment 19, then the prefabricated pier segment 19 moves forwards to the designed position of the pier 1, the prefabricated pier segment 19 is lowered to carry out splicing construction, and the steps are repeated to finish construction of other prefabricated pier segments.
3.2, prefabricated cap beam installation construction: hoisting the prefabricated cap beam 2 after the prefabricated pier sections are constructed, wherein the construction method for splicing the prefabricated cap beam 2 and the prefabricated pier sections in the step 3.1 is the same; repeating the steps until the construction of all lower structures of the bridge is completed, putting down the front pivot 15, and supporting and anchoring the front pivot on the prefabricated cap beam 2 to prepare for the construction of the main beam; at the moment, the stress system of the cable-stayed bridge girder erection machine is changed, and the original cable is converted into the main truss as the main stress rod piece. The rear anchor point 13, the cable tower pivot 14 and the front pivot 15 support the bridge girder erection machine on the prefabricated main girder 3.
3.3 girder installation construction: because the cable tower 7 is fixed to the main girder 6, the trolley cannot freely move longitudinally throughout the main girder 6. The procedure of girder installation construction is as follows: the girder transporting vehicle transports the prefabricated girder 3 to a hoisting position, see fig. 6, 7 and 8; firstly, hoisting a prefabricated main beam 3 through a C pulley 11 and a D pulley 12, slowly moving forwards, after the front end of the prefabricated main beam 3 is sent to the other side of the cable tower, hoisting a B pulley 10, temporarily withdrawing the C pulley 11 from working, idling the C pulley 11 to the vicinity of the D pulley 12 for re-hoisting, and withdrawing the D pulley 12 from working; see fig. 9, 10 and 11; at this time, the prefabricated main beam 3 is hoisted by the pulley B10 and the pulley C11 together to move forward continuously, when the pulley C11 moves to be close to the cable tower 7, the pulley A9 replaces the pulley B10, the pulley B10 temporarily quits working, the pulley B idles to be close to the cable tower 7 to replace the pulley C11, and the pulley C11 quits working, which is shown in fig. 12 and 13; hoisting the prefabricated main beam 3 to a design position by the pulley A9 and the pulley B10, and then placing the beam in place for installation; namely, the construction of the prefabricated main beam is completed by the alternate work of the four pulleys.
After the integrated construction of the prefabricated girder 3 and the prefabricated bridge pier 1 of the span is finished, the bridge girder erection machine is moved forwards to the next span, the step 3 is repeated, the prefabricated girder 3 in the subsequent construction can be transversely moved through the lower I-shaped steel 17 during hoisting, and the construction of the whole fully prefabricated assembled bridge is finished span by span.
A bridge girder erection machine embodiment; as shown in fig. 1, 2 and 3: the invention provides a cable-stayed bridge girder erection machine, which comprises a main truss 6, a cable tower 7, a stay cable 8, a pulley matched with a main lifting mechanism, lower I-shaped steel 17 and upper I-shaped steel 16, wherein the main truss is fixed on the cable tower through a bolt; the pulleys are four sets; lower I-beams 17 are transversely arranged at the front end and the rear end of a built bridge section 20 in the longitudinal direction of the bridge, a main truss 6 is arranged on the lower I-beams, four groups of upper I-beams 16 are dispersedly arranged on the main truss 6, the upper I-beams 16 are in sliding connection with the main truss 7 and can move longitudinally along the main truss 6, cable towers 7 are arranged on the main truss 6 and between the second group of upper I-beams 16 and the third group of upper I-beams 16, and the cable towers 7 are fixedly connected with the main truss 6 through stay cables 8; the rear anchor points 13 and the cable tower supporting points 14 are fixed on the built bridge sections 20 through high-strength steel bars 4 and bolts 5, pulleys are respectively installed on four groups of upper I-shaped steel 16 in front of and behind the cable tower 7, and each pulley is transversely connected with the corresponding upper I-shaped steel 16 in a sliding manner. A pulley 9 is arranged on the first group of upper I-beams, a pulley 10 is arranged on the second group of upper I-beams, a pulley 11C is arranged on the third group of upper I-beams, and a pulley 12D is arranged on the fourth group of upper I-beams.
A rear anchor point 13, a cable tower fulcrum 14 and a front fulcrum 15 are arranged below the main truss 6, and the bridge girder erection machine is supported on the built bridge section 20 through the rear anchor point 13 and the cable tower fulcrum 14 and is supported on the prefabricated cap girder 2 at the front end through the front fulcrum 15.
Claims (4)
1. An integrated assembly construction method of a prefabricated pier and a prefabricated main beam based on a cable-stayed bridge girder erection machine; the construction method is characterized in that the construction of the prefabricated pier (1), the prefabricated cap beam (2) and the prefabricated main beam (3) is carried out by using a cable-stayed bridge girder erection machine according to the following steps: the construction method comprises the steps of preparing components in a factory, assembling and fixing the bridge girder erection machine on a construction site and erecting a bridge on the construction site.
2. The integrated assembling construction method of the prefabricated pier and the prefabricated girder based on the cable-stayed bridge girder erection machine according to claim 1; the method is characterized in that:
step 1, preparing a component in a factory;
1.1 preparing a cable-stayed bridge girder erection machine component: the device comprises a main truss (6), a cable tower (7), a stay cable (8), a high-strength steel bar (4), a bolt (5), an A pulley (9), a B pulley (10), a C pulley (11), a D pulley (12), a main lifting mechanism (18), upper I-shaped steel (16) and lower I-shaped steel (17); the four pulleys are respectively provided with a main lifting mechanism in a matching way;
1.2 preparing a bridge member: prefabricating pier sections (19), prefabricated cap beams (2) and prefabricated main beams (3);
step 2, assembling and fixing a bridge girder erection machine on a construction site;
respectively erecting lower I-shaped steel (17) at the front end and the rear end of a bridge in the longitudinal direction along the built bridge section (20), assembling a main truss (6) on the lower I-shaped steel (17), and fixing a rear anchor point (13) and a cable tower fulcrum (14) on the built bridge section (3) through a high-strength steel bar (4) and a bolt (5); then four groups of upper I-beams (16) are arranged on the main truss (6), the upper I-beams (16) of each group are in sliding connection with the main truss (6) and can move longitudinally along the main truss (6), cable towers (7) are arranged on the main truss (6) and between the second group of upper I-beams and the third group of upper I-beams (16), and the cable towers (7) are fixedly connected with the main truss (6) by stay cables (8); a pulley (9), a B pulley (10), a C pulley (11) and a D pulley (12) which are respectively provided with a main lifting mechanism (18) are sequentially arranged on the four groups of upper I-shaped steel (16) from the front end; the A pulley (9) and the B pulley (10) are positioned in front of the cable tower (7), and the C pulley (11) and the D pulley (12) are positioned behind the cable tower (7); the four pulleys can longitudinally slide and can also transversely slide on the upper I-shaped steel (16);
step 3, erecting a bridge on a construction site;
3.1 assembling prefabricated bridge pier segments: the prefabricated pier sections (19) are conveyed to the front end of a beam by a beam conveying vehicle, a B pulley (10) moves to the front end of the beam through a main truss (6), a main lifting mechanism (18) is lowered to lift the prefabricated pier sections (19), the prefabricated pier sections (19) are moved forwards to the position of a pier (1), the prefabricated pier sections (19) are lowered to carry out splicing construction, and the steps are repeated to finish construction of other pier sections;
3.2, prefabricated cap beam installation construction: hoisting the prefabricated cap beam (2) after the construction of the pier sections is finished, wherein the construction method of assembling the prefabricated cap beam (2) and the prefabricated pier sections in the step 3.1 is the same; repeating the steps until all lower structures of the bridge are constructed, putting down the front pivot (15) to support and anchor on the prefabricated cap beam (2) to prepare for the construction of the prefabricated main beam (3);
3.3 girder installation construction: the girder transporting vehicle transports the prefabricated girder (3) to a hoisting position, firstly, the prefabricated girder (3) is hoisted through a C pulley (11) and a D pulley (12) and moves forwards slowly, after the front end of the prefabricated girder (3) is sent to the other side of the cable tower, a B pulley (10) is hoisted, the C pulley (11) temporarily quits working, idles to the vicinity of the D pulley (12) and hoists again, and the D pulley (12) quits working; at the moment, the prefabricated main beam (3) is hoisted by the pulley B (10) and the pulley C (11) together to move forwards continuously, when the pulley C (11) moves to a cable tower, the pulley A (9) replaces the pulley B (10), the pulley B (10) idles to the cable tower to replace the pulley C (11), the pulley C (11) quits working, and the prefabricated main beam (3) is hoisted to a designed position by the pulley A (9) and the pulley B (10) and then falls; the hoisting position is ensured to be accurate.
3. The utility model provides a cable-stayed bridge girder erection machine, includes main truss, cable tower, suspension cable and the supporting coaster that has main hoist mechanism, its characterized in that: the steel plate also comprises a lower I-shaped steel (17) and an upper I-shaped steel (16); the pulleys are four sets; lower I-shaped steel (17) is arranged at the front end and the rear end of a built bridge section (20) in the longitudinal direction along the bridge in the transverse direction, a main truss (6) is arranged on the lower I-shaped steel (17), four groups of upper I-shaped steel (16) are dispersedly arranged on the main truss (6), the upper I-shaped steel (16) is in sliding connection with the main truss (7) and can move longitudinally along the main truss (6), cable towers (7) are arranged on the main truss (6) and between the second group of upper I-shaped steel (16) and the third group of upper I-shaped steel (16), and the cable towers (7) are fixedly connected with the main truss (6) through stay cables (8); the rear anchor points (13) and the cable tower supporting points (14) are fixed on the built bridge sections (20) through high-strength steel bars (4) and bolts (5), pulleys are respectively installed on four groups of upper I-shaped steel (16) in front of and behind the cable tower (7), and each pulley is in transverse sliding connection with the corresponding upper I-shaped steel (16).
4. A cable-stayed bridge girder erection machine according to claim 3, wherein: a rear anchor point (13), a cable tower fulcrum (14) and a front fulcrum (15) are arranged below the main truss, and the bridge girder erection machine is supported on the built bridge section (20) through the rear anchor point (13) and the cable tower fulcrum (14) and is supported on the prefabricated cap beam (2) at the front end through the front fulcrum (15).
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| CN111472277A (en) * | 2020-03-31 | 2020-07-31 | 石家庄铁道大学 | Assembled pier transporting and erecting integrated machine and assembled pier transporting and erecting method based on same |
| CN111472274A (en) * | 2020-03-18 | 2020-07-31 | 王文洋 | Device for adjusting folding line shape of segmental prefabricated assembled bridge |
| CN114592433A (en) * | 2022-03-07 | 2022-06-07 | 中铁广州工程局集团有限公司 | Segmental beam dragging and sliding device and method for passing pier and storing beam |
| CN115478486A (en) * | 2022-11-03 | 2022-12-16 | 四川交通职业技术学院 | Erecting method of pier-beam integrated construction bridge girder erection machine |
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| CN110093863A (en) * | 2019-05-31 | 2019-08-06 | 浙江省交通规划设计研究院有限公司 | A kind of double face integration Bridge Erector being not provided with front leg strut |
| CN110344334A (en) * | 2019-07-31 | 2019-10-18 | 河南省交通规划设计研究院股份有限公司 | Steel reinforced concrete combined bridge construction method is done using two bridgings of dorsal funciculus formula Bridge Erector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111472274A (en) * | 2020-03-18 | 2020-07-31 | 王文洋 | Device for adjusting folding line shape of segmental prefabricated assembled bridge |
| CN111472277A (en) * | 2020-03-31 | 2020-07-31 | 石家庄铁道大学 | Assembled pier transporting and erecting integrated machine and assembled pier transporting and erecting method based on same |
| CN114592433A (en) * | 2022-03-07 | 2022-06-07 | 中铁广州工程局集团有限公司 | Segmental beam dragging and sliding device and method for passing pier and storing beam |
| CN114592433B (en) * | 2022-03-07 | 2024-03-08 | 中铁广州工程局集团有限公司 | Segmental beam dragging and sliding device and pier-passing beam storage method |
| CN115478486A (en) * | 2022-11-03 | 2022-12-16 | 四川交通职业技术学院 | Erecting method of pier-beam integrated construction bridge girder erection machine |
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Application publication date: 20200221 |