LU506300B1 - Steel box girder lifting and transporting frame system and construction method thereof - Google Patents
Steel box girder lifting and transporting frame system and construction method thereof Download PDFInfo
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- LU506300B1 LU506300B1 LU506300A LU506300A LU506300B1 LU 506300 B1 LU506300 B1 LU 506300B1 LU 506300 A LU506300 A LU 506300A LU 506300 A LU506300 A LU 506300A LU 506300 B1 LU506300 B1 LU 506300B1
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- girder
- steel box
- hoisting
- transporting
- pier
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 140
- 239000010959 steel Substances 0.000 title claims abstract description 140
- 238000010276 construction Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 106
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims description 23
- 238000003466 welding Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/52—Floating cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
Disclosed are a steel box girder lifting and transporting frame system and a construction method thereof. The steel box girder lifting and transporting frame system comprises a girder transporting track (1), a traction mechanism (2), a floating crane mechanism (3) and a girder hoisting mechanism (4); the girder transporting track (1) is on a slope of a shore side and extends along a direction of the slope to a first pier (52) arranged on the shore side; the traction mechanism (2) is on the girder transporting track (1) and close to the first pier (52); the floating crane mechanism (3) is used for hoisting a steel box girder (6) to the girder transporting track (1); and the girder hoisting mechanism (4) is located above a water surface and corresponds to a preset hoisting position. According to the steel box girder lifting and transporting frame system, the girder transporting track (1) is arranged on the slope of the shore side, so that the steel box girder (6) is hoisted to one end of the girder transporting track (1) close to the water surface through the floating crane mechanism (3), and then the steel box girder (6) is dragged to the preset hoisting position along the girder transporting track (1) through the traction mechanism (2) arranged on the girder transporting track (1), and the girder transporting track (1) extends from the water surface to the first pier (52), so that the steel box girder (6) can be transported to the pier to facilitate subsequent erection.
Description
BL-5816
STEEL BOX GIRDER LIFTING AND TRANSPORTING FRAME SYSTEM AND 4506300
CONSTRUCTION METHOD THEREOF
[0001] The present disclosure relates to the technical field of girder transportation and erection, and particularly to a steel box girder lifting and transporting frame system and a construction method thereof.
[0002] With the development of infrastructure in China, bridge construction is changing with each passing day, especially the construction of bridges in mountainous areas, which not only solves the traffic problem, but also drives the rapid development of economy along the way.
[0003] Due to the complex terrains in mountainous areas, there are a steep slope and other terrains on a slope of a shore side of a water surface, and when a bridge is erected above the water surface under this terrain condition, a pier for erecting a steel box girder is usually established on the slope of the shore side. However, when the water surface is in a dry season, a girder transporting ship cannot get close to the pier established on the shore side, so that a girder slab cannot be transported to a vicinity of the pier to facilitate hoisting the steel box girder transported below the pier for girder erection above a steep slope of a mountain side.
[0004] (I) Technical problem to be solved
[0005] The technical problem to be solved by the present disclosure is to solve the existing problem that a girder slab cannot be transported to a vicinity of a pier to facilitate hoisting a steel box girder transported below the pier for girder erection above a steep slope of a mountain side.
[0006] (II) Technical solution
[0007] In order to solve the above technical problem, an embodiment of the present disclosure provides a steel box girder lifting and transporting frame system, which comprises a girder transporting track, a traction mechanism, a floating crane mechanism and a girder hoisting mechanism, wherein:
[0008] the girder transporting track is on a slope of a shore side of a water surface and extends along a direction of the slope to a first pier arranged on the shore side; 1
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[0009] the traction mechanism is on the girder transporting track and close to the first pier; LU506300
[0010] the floating crane mechanism floats on the water surface, and is used for hoisting a steel box girder to one end of the girder transporting track far away from the first pier to enable the steel box girder to move to a preset hoisting position along the girder transporting track under the traction of the traction mechanism; and
[0011] the girder hoisting mechanism is located above the water surface and corresponds to the preset hoisting position, and is used for hoisting and erecting the steel box girder transported below the girder hoisting mechanism.
[0012] According to one embodiment of the present disclosure, the steel box girder lifting and transporting frame system further comprises a girder transporting vehicle, the girder transporting vehicle is arranged on the girder transporting track and is connected with the traction mechanism to enable the floating crane mechanism to hoist the steel box girder to the girder transporting vehicle, and the girder transporting vehicle is dragged by the traction mechanism to move to the preset hoisting position along the girder transporting track.
[0013] According to one embodiment of the present disclosure, the steel box girder lifting and transporting frame system further comprises two traction mechanisms, wherein the two traction mechanisms are arranged at intervals along a direction perpendicular to length extension of the girder transporting track, and the two traction mechanisms are respectively connected with two sides of the girder transporting vehicle.
[0014] According to one embodiment of the present disclosure, the floating crane mechanism comprises a floating seat floating on the water surface and a floating crane assembly arranged on the floating seat, and the floating crane assembly is used for hoisting the steel box girder to the girder transporting track and is rotatable relative to the floating seat.
[0015] According to one embodiment of the present disclosure, the girder hoisting mechanism comprises a girder hoisting assembly and a travelling wheel arranged at a bottom of the girder hoisting assembly, and the girder hoisting assembly is used for hoisting the steel box girder for erection and moves to a position corresponding to the preset hoisting position through the travelling wheel.
[0016] In a second aspect, the embodiment of the present disclosure further provides a construction method, which comprises the following steps:
[0017] laying a girder transporting track on a slope of a shore side of a water surface; wherein, the girder transporting track extends along a direction of the slope to a first pier arranged on the shore side; 2
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[0018] transporting a steel box girder to the girder transporting track through a floating LU506300 crane mechanism;
[0019] dragging the steel box girder on the girder transporting track to a preset hoisting position through a traction mechanism;
[0020] hoisting and assembling the steel box girder dragged to the preset hoisting position through a girder hoisting mechanism; and
[0021] welding and fixing the assembled steel box girder by a stay cable to complete erection.
[0022] According to one embodiment of the present disclosure, before the step of laying the girder transporting track on the slope of the shore side, the construction method further comprises:
[0023] arranging a bracket on one side of the first pier far away from the water surface, and erecting a girder storage platform between the bracket and the first pier.
[0024] According to one embodiment of the present disclosure, the step of hoisting and assembling the steel box girder dragged to the preset hoisting position through the girder hoisting mechanism comprises:
[0025] hoisting a plurality of steel box girders to the girder storage platform above the first pier in sequence; and
[0026] hoisting the steel box girders through the girder hoisting mechanism and moving the steel box girders to a preset erection position along the girder storage platform for assembly respectively.
[0027] According to one embodiment of the present disclosure, after the step of hoisting and assembling the steel box girder dragged to the preset hoisting position through the girder hoisting mechanism, the girder transporting and erecting method further comprises:
[0028] connecting the steel box girder with other erected steel box girders adjacent to the steel box girder.
[0029] (III) Beneficial effects
[0030] Compared with the prior art, the technical solution above provided by the embodiment of the present disclosure has the following advantages:
[0031] the present disclosure provides the steel box girder lifting and transporting frame system and the construction method thereof, and the steel box girder lifting and transporting frame system comprises the girder transporting track, the traction mechanism, the floating crane mechanism and the girder hoisting mechanism; the girder transporting track is arranged on the slope of the shore side and extends along the direction of the slope to the first pier 3
BL-5816 arranged on the shore side; the traction mechanism is on the girder transporting track and LU506300 close to the first pier; the floating crane mechanism floats on the water surface, and is used for hoisting the steel box girder to one end of the girder transporting track far away from the first pier to enable the steel box girder to move to the preset hoisting position along the girder transporting track under the traction of the traction mechanism; and the girder hoisting mechanism is located above the water surface and corresponds to the preset hoisting position, and is used for hoisting and erecting the steel box girder transported below the girder hoisting mechanism. According to the steel box girder lifting and transporting frame system of the present disclosure, the girder transporting track is arranged on the steep slope, so that the steel box girder is hoisted to one end of the girder transporting track close to the water surface through the floating crane mechanism, and then the steel box girder is dragged to the preset hoisting position along the girder transporting track through the traction mechanism arranged on the girder transporting track, and the girder transporting track extends from the water surface to the first pier, so that the steel box girder can be transported to the vicinity of the first pier to facilitate subsequent erection.
[0032] It should be understood that, the above general description and the following detailed description are exemplary and explanatory only, and cannot limit the present disclosure.
[0033] The drawings herein are incorporated into the specification and constitute a part of the specification, show the embodiments that conform to the present disclosure, and are used for explaining the principle of the present disclosure together with the specification.
[0034] In order to illustrate the embodiments of the present disclosure or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced hereinafter. Obviously, for those of ordinary skills in the art, other drawings may also be obtained according to these drawings without going through creative works.
[0035] FIG 1 is a schematic structural diagram of a pier arranged on a slope of a shore side in an embodiment of the present disclosure;
[0036] FIG 2 is a schematic structural diagram of a girder transporting and erecting device in the embodiment of the present disclosure; 4
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[0037] FIG 3 is a schematic structural diagram of a position of the girder transporting and LU506300 erecting device in a first flow of a girder transporting and erecting method in the embodiment of the present disclosure;
[0038] FIG 4 is a schematic structural diagram of a position of the girder transporting and erecting device in a second flow of the girder transporting and erecting method in the embodiment of the present disclosure;
[0039] FIG S is a schematic structural diagram of a position of the girder transporting and erecting device in a third flow of the girder transporting and erecting method in the embodiment of the present disclosure;
[0040] FIG 6 is a schematic structural diagram of a position of the girder transporting and erecting device in a fourth flow of the girder transporting and erecting method in the embodiment of the present disclosure;
[0041] FIG 7 is a schematic structural diagram of a position of the girder transporting and erecting device in a fifth flow of the girder transporting and erecting method in the embodiment of the present disclosure;
[0042] FIG 8 is a side view of the girder transporting and erecting device in the embodiment of the present disclosure; and
[0043] FIG 9 is a method flow chart of the girder transporting and erecting method in the embodiment of the present disclosure.
[0044] In the drawings, 1 refers to girder transporting track; 11 refers to stop block; 12 refers to concrete foundation; 2 refers to traction mechanism; 21 refers to girder transporting vehicle; 22 refers to winch; 3 refers to floating crane mechanism; 31 refers to floating crane assembly; 311 refers to floating crane truss; 312 refers to hoisting hook; 32 refers to floating seat; 33 refers to counterweight device; 4 refers to girder hoisting mechanism; 41 refers to girder hoisting assembly; 411 refers to girder hoisting truss; 412 refers to hoisting sling; 42 refers to travelling wheel; 5 refers to water surface; 51 refers to shore side; 52 refers to first pier; 53 refers to second pier; 6 refers to steel box girder; 7 refers to bracket; 71 refers to girder storage platform; 72 refers to binder; 73 refers to cross girder; 74 refers to longitudinal girder; 75 refers to moving track; 8 refers to steep slope; and 9 refers to stay cable.
[0045] In order to make objects, technical solutions, and advantages of embodiments of the present disclosure more clearly, a technical solution in the embodiments of the present disclosure will be described clearly and completely hereinafter. Obviously, the described
BL-5816 embodiments are some, but not all, embodiments of the present disclosure. Based on the LU506300 embodiments in the present disclosure, all other embodiments obtained by those of ordinary skills in the art without going through creative works fall within the scope of protection of the present disclosure.
[0046] As shown in FIG 1 to FIG 8, the present disclosure provides a steel box girder lifting and transporting frame system, and the steel box girder lifting and transporting frame system comprises a girder transporting track 1, a traction mechanism 2, a floating crane mechanism 3 and a girder hoisting mechanism 4. The girder transporting track 1 is arranged on a shore side 51 of a water surface 5, and the shore side 51 may also refer to a beach of a lake, a river, or the like herein. The girder transporting track 1 extends along a direction of a slope of the shore side 51 to a first pier 52 arranged on the shore side 51. The traction mechanism 2 is on the girder transporting track 1 and close to the first pier 52. The floating crane mechanism 3 floats on the water surface 5, and is used for hoisting a steel box girder 6 to one end of the girder transporting track 1 close to the water surface 5, so that the steel box girder 6 moves to a preset hoisting position along the girder transporting track 1 under the traction of the traction mechanism 2. The girder hoisting mechanism 4 is located above the water surface 5 and corresponds to the preset hoisting position, and is used for hoisting and erecting the steel box girder 6 transported below the girder hoisting mechanism 4. According to the steel box girder lifting and transporting frame system of the present disclosure, the girder transporting track 1 is arranged on the shore side 51 of the water surface 5, so that the steel box girder 6 is hoisted to one end of the girder transporting track 1 close to the water surface 5 through the floating crane mechanism 3, and then the steel box girder 6 is dragged to the preset hoisting position along the girder transporting track 1 through the traction mechanism 2 arranged on the girder transporting track 1, one end of the girder transporting tack 1 far away from the water surface 5 is provided with a stop block 11 for blocking the steel box girder 6, and a bottom of the girder transporting track 1 is provided with a concrete foundation 12 for supporting the girder transporting track 1. Moreover, the girder transporting track extends from the water surface 5 to the first pier 52, so that the steel box girder 6 can be transported to the first pier 52 to facilitate subsequent erection between a pier 0# (which is namely a second pier 53) and a pier 1# (which is namely the first pier 52) above a steep slope 8 of a mountain side.
[0047] Specifically, as shown in FIG 1, the girder transporting track 1 is arranged on the shore side 51 of the water surface 5 and extends along the direction of the slope of the shore side 51 to the first pier 52 arranged on the shore side 51. Because a ship for transporting the 6
BL-5816 steel box girder 6 may be unable to be close to the first pier 52 arranged on the slope of the LU506300 shore side in both a dry season and a wet season, it is necessary to transport the steel box girder 6 to the first pier 52 or a vicinity of the first pier 52 through the girder transporting track 1 for subsequent erection at this time. Therefore, in this embodiment, the girder transporting track 1 is set to extend to the first pier 52 along the shore side 51, so that the girder transporting ship may be close to one side of the girder transporting track 1 far away from the first pier 52, so as to place the steel box girder 6 on the girder transporting track 1 and then transport the steel box girder to any preset hoisting position on the first pier 52 or the vicinity of the first pier 52 along the girder transporting track 1. The preset hoisting position refers to a preset erection position above the water surface 5 herein, for example, the steel box girder 6 needs to be erected in a certain position, and the girder hoisting mechanism 4 may be arranged in a vicinity of the certain position at this time, so that the steel box girder 6 directly below the certain position is hoisted for erection.
[0048] As shown in FIG 2, the traction mechanism 2 is on the girder transporting track 1 and close to the first pier 52, so that the steel box girder 6 is hoisted to one end of the girder transporting track 1 close to the water surface 5 by the floating crane mechanism 3, thus moving the steel box girder 6 to the preset hoisting position along the girder transporting track 1 under the traction of the traction mechanism 2 for subsequent erection.
[0049] As shown in FIG 8, a transverse support 73 is arranged above the bracket 7, a longitudinal girder 74 is arranged on the transverse support 73, and a moving track 75 is formed on the longitudinal girder 74 for the girder hoisting mechanism 4 to move on.
[0050] As shown in FIG 1 to FIG 2, the erection of the steel box girder in this embodiment is specifically described by taking the erection of the steel box girder from the pier O# (the second pier 53) to the pier 1# (the first pier 52) and from the pier 1# to a pier 2# as an example: as shown in FIG 1, the pier 0# to the pier 1# are located on the steep slope 8 of the slope of the shore side 51, and the pier 1# to the pier 2# are located in a beach area.
Due to an influence of water storage on the water surface, a lowest water level is 143.3 m and a highest water level is 173.3 m in a construction area of the water surface, so that the transporting ship cannot get close to the pier 1# even in the wet season. In order to hoist the steel box girder from the pier O# to the pier 1# and from the pier 1# to the pier 2# even at the lowest water level, without introducing a super-large floating crane and erecting a super-long tall support, the steel box girder 6 may be transported by the inclined girder transporting track 1 in this embodiment, and then the steel box girder 6 is hoisted by the girder hoisting mechanism 4 arranged on a bridge floor for erection. Specifically, a foundation of the girder 7
BL-5816 transporting track 1 is enlarged with two concrete strips with a width of 2 m, a double-track LU506300 and a wedge-shaped girder transporting vehicle are arranged above the strip-shaped foundation as a girder transporting vehicle 21, and the girder transporting vehicle 21 may move on the girder transporting track 1 under the traction of the traction mechanism 2. A length of the girder transporting vehicle 21 should be greater than a length of the steel box girder 6, and a wedge-shaped angle of the wedge-shaped girder transporting vehicle 21 is the same as a maximum slope gradient of the girder transporting track 1. After the girder transporting vehicle 21 is placed on the girder transporting track 1, the anti-slip stop block is arranged to prevent the girder transporting vehicle from slipping in an ascending process.
[0051] For example, in this embodiment, the traction mechanism 2 is specifically a winch 22, two winches 22 are provided, the two winches 22 are arranged at intervals along a direction perpendicular to length extension of the girder transporting track 1, and the two winches 22 are respectively connected with two sides of the girder transporting vehicle 21 and strokes of the two winches 22 are synchronized, so that the two sides of the girder transporting vehicle 21 may move in a balanced way under the common traction of the two winches 22 to prevent one-sided rollover. Selection of a model of the winch 22 is specifically made according to a calculation basis that the heaviest steel box girder 6 is started with a static friction force on the steepest part of the girder transporting track 1, more than three times the surplus coefficient should be kept for calculating a traction force, and selection of a wire rope and a travelling wheel set of the winch 22 should meet requirements of corresponding hoisting specifications. In addition, the winch 22 is fixed by driving an
I-shaped steel anchor, anchor roots are dug around the winch 22, and I-shaped 20 profile steel with a length of three meters is driven into each anchor root and poured with concrete. An anchorage safety factor of each winch 22 calculated according to a bottom layer characteristic is greater than 5.
[0052] As shown in FIG 1 and FIG 2, the pier 0# to the pier 1# are located on the steep slope 8 of the mountain side, and eight girders need to be stored (referring to FIG 1 for details). Because the steel box girder 6 cannot be transported from the pier 0# to the pier 1#, the girder can only cross over the pier 1# through the girder hoisting mechanism 4 to be stored on a girder storage platform 71 erected above the pier 1#. Therefore, the girder hoisting mechanism 4 comprises a girder hoisting assembly 41 and a travelling wheel 42 arranged at a bottom of the girder hoisting assembly 41, and the girder hoisting assembly 41 may comprise a girder hoisting truss 411 and a hoisting sling 412. The girder hoisting assembly 41 is used for hoisting the steel box girder 6 for erection and moves to a position 8
BL-5816 corresponding to the preset hoisting position through the travelling wheel 42, so that the steel LU506300 box girder 6 may be hoisted higher than a top of the pier 1# by the girder hoisting assembly 41, and the steel box girder 6 may cross over the top of the pier 1# through a jib lubbing mechanism of the girder hoisting assembly 41, so as to be placed on the girder storage platform 71 between the pier 0# and the pier 1#, and then slidably placed in a preset position.
[0053] As shown in FIG 2, the floating crane mechanism 3 comprises a floating seat 32 floating on the water surface, and a floating crane assembly 31 and a counterweight device 33 which are arranged on the floating seat 32. The floating crane assembly 31 comprises a floating crane truss 311 and a hoisting hook 312, and the floating crane assembly 31 is used for hoisting the steel box girder 6 to the girder transporting track 1 and is rotatable relative to the floating seat 32, so that the floating crane assembly 31 may hoist the steel box girder 6 and then rotate above the girder transporting track 1 to place the steel box girder 6 on the girder transporting vehicle 21 on the girder transporting track 1. The girder transporting vehicle 21 is dragged by the winch 22 to move along the girder transporting track 1 to the first pier 52, the steel box girder 6 is hoisted by the girder hoisting mechanism 4 above the first pier 52 to cross over the top of the pier 1# to be placed on the girder storage platform 71 between the pier 0# and the pier 1#, and then the stored steel box girders 6 are erected in sequence to complete the erection of the steel box girders 6 from the pier O# to the pier 1#. In addition, a bracket 7 is arranged on a left side of the pier 1#, the girder storage platform 71 is arranged above the bracket 7 and the first pier 52, and the girder storage platform 71 is arranged across a space between the pier 0# and the pier 1#.
[0054] With reference to FIG 1, eight steel box girders 6 need to be arranged from the pier 0# to the pier 1#, which are namely steel box girders 6 numbered O to V as shown in FIG 1.
Therefore, the above process may be repeated for eight times to hoist and store the eight steel box girders, so that the steel box girders 6 are erected between the pier 0# and the pier 1#, and fixed by stay cables 9 after erection.
[0055] As shown in FIG 9, the present disclosure further provides a girder transporting and erecting method, which comprises the following steps:
[0056] S101: laying a girder transporting track on a slope of a shore side of a water surface; wherein, the girder transporting track extends along an extension direction of the shore side to a first pier arranged on the shore side;
[0057] S102: transporting a steel box girder to the girder transporting track through a floating crane mechanism; 9
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[0058] S103: dragging the steel box girder on the girder transporting track to a preset LU506300 hoisting position through a traction mechanism;
[0059] S104: hoisting and assembling the steel box girder dragged to the preset hoisting position through a girder hoisting mechanism; and
[0060] S105: welding and fixing the assembled steel box girder by a stay cable to complete erection.
[0061] Specifically, for the construction of the girder transporting track, in order to reduce an engineering quantity, a slope gradient of the girder transporting track is set according to a slope gradient of a water level fluctuation area (that is, a slope gradient of the shore side) on the premise of ensuring that a minimum thickness of foundation concrete of the girder transporting track is not less than 2 m. When a water level falls, an elevation of a beach of the shore side is measured first, a reasonable comprehensive slope gradient is selected based on a principle of burying a low part and excavating a high part, and there should not be too many points of gradient change. After a foundation of the girder transporting track is excavated, a bearing capacity of the foundation should be measured on site, and a minimum bearing capacity should be not less than 150 Kpa. If the bearing capacity is too small, a construction method of replacement filling, silt displacement or pine pile driving may be used. Before pouring of the girder transporting track, a formwork erection elevation is fixed after a strategic lofting test is qualified, a track steel plate is pre-embedded according to a pulling line of lofting elevation, and a track fixing pre-embedded plate is pre-embedded in foundations with different slope gradients on two sides of a slope point part, so as to fix a broken track end. Before mounting, the girder transporting track is set out by survey, a center line of the track is set out at an interval of 5 m within the same cross-section, and a cross-section of the point of gradient change is set out in an encrypted way. When the girder transporting track is mounted, it is necessary not only to ensure straightness of a single track, but also to ensure that a distance deviation of four tracks is not greater than 5 mm and an elevation difference is less than 3 mm.
[0062] Further, before the step of laying the girder transporting track on the shore side, the girder transporting and erecting method further comprises: arranging a bracket on one side of the pier far away from the water surface, and erecting a girder storage platform between the bracket and the pier for storing the steel box girder hoisted by the girder hoisting mechanism.
[0063] Further, the step of hoisting the steel box girder in the preset hoisting position above the pier through the girder hoisting mechanism for erection comprises: hoisting a plurality of steel box girders to the girder storage platform above the pier in sequence; and hoisting the
BL-5816 steel box girders through the girder hoisting mechanism and moving the steel box girders to a LUS06500 preset erection position along the girder storage platform for erection respectively.
[0064] Further, after the step of hoisting the steel box girder transported to the preset hoisting position through the girder hoisting mechanism for erection, the girder transporting and erecting method further comprises: connecting the steel box girder with other erected steel box girders adjacent to the steel box girder.
[0065] Further, after the step of connecting the steel box girder with other erected steel box girders adjacent to the steel box girder, the girder transporting and erecting method further comprises: fixing the steel box girder by the stay cable.
[0066] As shown in FIG 3 to FIG 7, nine steel box girders need to be erected from a pier 1# (the first pier 52 referred to in the above embodiment) to a pier 2#, which are namely steel box girders numbered D to N as shown in FIG. 1. A specific erection process of all steel box girders (a total of 15 steel box girders numbered H to V) is as follows.
[0067] First flow: as shown in FIG 3 and FIG 4, the girder transporting track and the bracket on the left side of the pier 1# are erected first, then the steel box girders numbered I to
L are hoisted to the girder transporting vehicle by the floating crane mechanism and transported directly below the girder hoisting mechanism on a bridge floor under the traction of the traction mechanism by the girder transporting vehicle, the steel box girders are slowly hoisted by the girder hoisting mechanism, and then the steel box girders are erected in sequence, connected together and fixed by the stay cables.
[0068] Second flow: as shown in FIG 5, the steel box girders numbered V to O are hoisted to the girder transporting vehicle in sequence by the floating crane mechanism and transported to the top of the girder transporting track, which is namely the pier 1#, under the traction of the traction mechanism by the girder transporting vehicle, and the steel box girders numbered V to O are hoisted to a top of the pier 1# in sequence by the girder hoisting mechanism on the bridge floor at this time and moved in place on the bracket for erection.
[0069] Third flow: as shown in FIG 6, the steel box girder numbered N is hoisted to the top of the pier 1# by the girder hoisting mechanism on the bridge floor for pre-deflection.
[0070] Fourth flow: as shown in FIG 7, the girder hoisting mechanism is provided with a jib lubbing mechanism and is capable of hoisting the steel box girder numbered M for erection, and then the steel box girder numbered N is dragged for closure construction.
[0071] Fifth flow: as shown in FIG 7, subsequent mounting is carried out by the girder hoisting mechanism on the bridge floor for closure construction. 11
BL-5816
[0072] It should be noted that relational terms, such as “first” and “second”, and the like, LU506300 used herein are only intended to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that any such actual relationship or sequence exists between these entities or operations. Furthermore, the terms "comprise", "include", or any other variation thereof, are intended to cover a non-exclusive inclusion, so that a process, a method, an article, or equipment that comprises a list of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article, or equipment. In a case without further limitations, an element defined by the phrase "comprising one..." does not preclude the presence of additional identical elements in the process, method, article, or equipment that includes the element.
[0073] The foregoing descriptions are only specific embodiments of the present disclosure, such that those skilled in the art can understand or realize the present disclosure. Many modifications to these embodiments will be obvious to those skilled in the art, and general principles defined herein may be realized in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments shown herein, but should comply with the widest scope consistent with the principles and novel features disclosed herein. 12
Claims (9)
1. A steel box girder lifting and transporting frame system, characterized in that, comprising a girder transporting track (1), a traction mechanism (2), a floating crane mechanism (3) and a girder hoisting mechanism (4), wherein: the girder transporting track (1) is on a slope of a shore side (51) of a water surface (5) and extends along an inclined direction of the slope to a first pier (52) arranged on the shore side (51); the traction mechanism (2) is on the girder transporting track (1) and close to the first pier (52); the floating crane mechanism (3) floats on the water surface (5), and is used for hoisting a steel box girder (6) to one end of the girder transporting track (1) far away from the first pier (52) to enable the steel box girder (6) to move to a preset hoisting position along the girder transporting track (1) under the traction of the traction mechanism (2); and the girder hoisting mechanism (4) is located above the water surface (5) and corresponds to the preset hoisting position, and is used for hoisting and erecting the steel box girder (6) transported below the girder hoisting mechanism (4).
2. The steel box girder lifting and transporting frame system according to claim 1, characterized in that, the steel box girder lifting and transporting frame system further comprises a girder transporting vehicle (21), the girder transporting vehicle (21) is arranged on the girder transporting track (1) and is connected with the traction mechanism (2) to enable the floating crane mechanism (3) to hoist the steel box girder (6) to the girder transporting vehicle (21), and the girder transporting vehicle (21) is dragged by the traction mechanism (2) to move to the preset hoisting position along the girder transporting track (1).
3. The steel box girder lifting and transporting frame system according to claim 2, characterized in that, further comprising two traction mechanisms (2), wherein the two traction mechanisms (2) are arranged at intervals along a direction perpendicular to length extension of the girder transporting track (1), and the two traction mechanisms (2) are respectively connected with two sides of the girder transporting vehicle (21). 13
BL-5816
4. The steel box girder lifting and transporting frame system according to claim 1, LU506300 characterized in that, the floating crane mechanism (3) comprises a floating seat (31) floating on the water surface (5) and a floating crane assembly (31) arranged on the floating seat (32), and the floating crane assembly (31) is used for hoisting the steel box girder (6) to the girder transporting track (1) and is rotatable relative to the floating seat (32).
5. The steel box girder lifting and transporting frame system according to claim 1, characterized in that, the girder hoisting mechanism (4) comprises a girder hoisting assembly (41) and a travelling wheel (42) arranged at a bottom of the girder hoisting assembly (41), and the girder hoisting assembly (41) is used for hoisting the steel box girder (6) for erection and moves to a position corresponding to the preset hoisting position through the travelling wheel (42).
6. A construction method for a steel box girder lifting and transporting frame using the steel box girder lifting and transporting frame system according to any one of claims 1 to 5, characterized in that, comprising the following steps: laying a girder transporting track on a slope of a shore side of a water surface; wherein the girder transporting track extends along a direction of the slope to a first pier arranged on the shore side; transporting a steel box girder to the girder transporting track through a floating crane mechanism; dragging the steel box girder on the girder transporting track to a preset hoisting position through a traction mechanism; hoisting and assembling the steel box girder dragged to the preset hoisting position through a girder hoisting mechanism; and welding and fixing the assembled steel box girder by a stay cable to complete erection.
7. The construction method according to claim 6, characterized in that, before the step of laying the girder transporting track on the slope of the shore side, the method further comprises: arranging a bracket on one side of the first pier far away from the water surface, and erecting a girder storage platform between the bracket and the first pier. 14
BL-5816
8. The construction method according to claim 7, characterized in that, the step of LUS06500 hoisting and assembling the steel box girder dragged to the preset hoisting position through the girder hoisting mechanism comprises: hoisting a plurality of steel box girders to the girder storage platform above the first pier in sequence; and hoisting the steel box girders through the girder hoisting mechanism and moving the steel box girders to a preset erection position along the girder storage platform for frame assembly respectively.
9. The construction method according to claim 6, characterized in that, after the step of hoisting and assembling the steel box girder dragged to the preset hoisting position through the girder hoisting mechanism, the method further comprises: connecting the steel box girder with other erected steel box girders adjacent to the steel box girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU506300A LU506300B1 (en) | 2024-02-02 | 2024-02-02 | Steel box girder lifting and transporting frame system and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU506300A LU506300B1 (en) | 2024-02-02 | 2024-02-02 | Steel box girder lifting and transporting frame system and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU506300B1 true LU506300B1 (en) | 2024-08-02 |
Family
ID=92174878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU506300A LU506300B1 (en) | 2024-02-02 | 2024-02-02 | Steel box girder lifting and transporting frame system and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU506300B1 (en) |
-
2024
- 2024-02-02 LU LU506300A patent/LU506300B1/en active IP Right Grant
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Effective date: 20240802 |