CN114108479A - Construction method for hoisting stiffening beam of large-tonnage suspension bridge by cooperation of multiple machines - Google Patents
Construction method for hoisting stiffening beam of large-tonnage suspension bridge by cooperation of multiple machines Download PDFInfo
- Publication number
- CN114108479A CN114108479A CN202111456488.5A CN202111456488A CN114108479A CN 114108479 A CN114108479 A CN 114108479A CN 202111456488 A CN202111456488 A CN 202111456488A CN 114108479 A CN114108479 A CN 114108479A
- Authority
- CN
- China
- Prior art keywords
- stiffening
- cable
- steel
- section
- girder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- 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
Abstract
The invention discloses a construction method for hoisting a large-tonnage suspension bridge stiffening girder by cooperation of multiple machines, which comprises the steps of firstly hoisting a stiffening girder section to a position right below a main cable installation position by a cable crane, then transferring the load of the stiffening girder section to a first sling by a second sling, hoisting a steel truss girder and installing the stiffening girder section, and then hoisting the stiffening girder section to the main cable installation position by a hoisting mechanism to complete the installation of the stiffening girder section.
Description
Technical Field
The invention relates to the field of suspension bridge hoisting and carrying equipment. More specifically, the invention relates to a construction method for hoisting a stiffening beam of a large-tonnage suspension bridge by cooperation of multiple machines.
Background
A stiffening beam of a suspension bridge is generally erected by adopting a cable crane, however, if the suspension bridge is a three-tower four-collapse suspension bridge, the design height of a part of beam sections is intersected with the design height of a main cable due to the height limitation of a main tower and the design of a double-layer channel of the beam, the capacity of the cable crane cannot meet the erection requirement under the condition, the first beam section in a span must be integrally hoisted with an adjacent beam section, the total weight of the integrally hoisted beam of a combined beam and a steel truss beam exceeds 1100t, the combined beam exceeds the rated hoisting load of all the existing single cable cranes in China, if a large-scale floating crane is used for installation, the matching hoisting capacity exceeds 1100t, the hoisting height exceeds 80m, two floating cranes are required to work simultaneously, the resources are not easily configured, the use cost is very high, and aiming at the technical difficulties, a new construction method is urgently needed to solve the technical problems.
Disclosure of Invention
The invention also aims to provide a construction method for hoisting the stiffening beam of the large-tonnage suspension bridge by the cooperation of multiple machines, which solves the problem that the span stiffening beam section is higher than the main cable and the hoisting height of the cable crane is insufficient by the mutual cooperation of the cable crane and the hoisting mechanism, avoids the adoption of large-scale equipment such as a large-scale floating crane, is convenient and economic to construct, fully utilizes the technical advantages of each equipment by the cooperative working mode of the cable crane and the hoisting mechanism, reduces the technical risk, improves the construction efficiency and ensures the construction progress.
To achieve these objects and other advantages in accordance with the present invention, there is provided a construction method for multi-machine cooperative hoisting of a stiffening girder for a large-tonnage suspension bridge, comprising the steps of:
s1, arranging a plurality of first suspension ropes at intervals along the length direction of the main cable, wherein one end of any first suspension rope is fixedly connected with the main cable, two cable cranes are fixed on the main cable at intervals along the length direction of the main cable, and a hydraulic winch is further arranged on any cable crane;
s2, transporting the first stiffening beam section to a position to be hung, connecting the first stiffening beam section with the lifting appliances of the two cable cranes, and synchronously starting the two cable cranes to lift the first stiffening beam section to be right below the main cable installation position;
s3, correspondingly arranging a plurality of second slings between the first stiffening beam section and the plurality of first slings positioned right above the first stiffening beam section, connecting one end of any second sling with the other end of the corresponding first sling, connecting the other end of any second sling with the first stiffening beam section, loosening the sling, and then relatively moving the two cable-carried cranes to the position right above the position to be lifted of the next stiffening beam section and fixing the two cable-carried cranes on the main cable;
s4, symmetrically installing four lifting mechanisms on the main cable, wherein any lifting mechanism is positioned right above the first stiffening beam section;
s5, transporting the steel truss girder to the position right below the first stiffening girder section, connecting the steel truss girder with a hydraulic winch of one cable crane, starting the hydraulic winch to lift the steel truss girder to the bottom of the first stiffening girder section, and connecting the steel truss girder with the first stiffening girder section;
s6, connecting the four lifting mechanisms with the steel truss girder, removing the plurality of second slings and synchronously starting the four lifting mechanisms to lift the first stiffening girder section to the installation position of the main cable, fixedly connecting the first stiffening girder section with the plurality of first slings directly above the first stiffening girder section, and completing the installation of the first stiffening girder section;
s7, transporting the second stiffening beam section to a position to be hung, connecting the second stiffening beam section with a hanger of a cable crane directly above the second stiffening beam section, and starting the cable crane to lift the second stiffening beam section to a position directly below the main cable installation position;
s8, correspondingly arranging a plurality of second slings between the second stiffening beam section and the plurality of first slings positioned right above the second stiffening beam section, connecting one end of any second sling with the other end of the first sling, connecting the other end of any second sling with the bottom of the second stiffening beam section, loosening the sling, moving the cable crane to a position to be lifted of the next stiffening beam section, and fixing the cable crane on the main cable;
s9, dismantling the four lifting mechanisms and the steel trusses, arranging the four lifting mechanisms right above the second stiffening girder section, installing the four lifting mechanisms on a main cable, and transporting the steel trusses to the position right below the second stiffening girder section;
s10, connecting the steel truss girder with a hydraulic winch of a cable crane adjacent to the second stiffening girder section, starting the hydraulic winch to lift the steel truss girder to the bottom of the second stiffening girder section, and connecting the steel truss girder with the second stiffening girder section;
s11, fixedly connecting the four lifting mechanisms with the steel truss girder, dismantling the plurality of second slings and synchronously starting the four lifting mechanisms so as to lift the second stiffening girder section to the installation position of the main cable, fixedly connecting the second stiffening girder section with the plurality of first slings directly above the second stiffening girder section, and completing the installation of the second stiffening girder section.
And S12, repeating the steps S7-S11, and sequentially installing the subsequent stiffening girder sections until all the stiffening girder sections are completely installed.
Preferably, a plurality of flanges are symmetrically and fixedly arranged at the top of the steel truss girder, and the steel truss girder is connected with the bottom of the stiffening girder section through the plurality of flanges.
Preferably, a plurality of inclined struts are arranged at intervals along the length direction of the steel truss girder, and two ends of any inclined strut are respectively connected with one side of the steel truss girder and the bottom of the stiffening girder section.
Preferably, any of the lifting mechanisms comprises:
the upper part of the cable clamp is clamped on the main cable;
the upper parts of the first steel plates are arranged in a manner of clinging to a pair of side surfaces of the lower part of the cable clamp, the upper part of the side surface of any first steel plate is arc-shaped, the lower part of the side surface of any first steel plate is rectangular, rotating shafts are respectively and fixedly arranged on the upper parts of the first steel plates, two ends of any rotating shaft respectively penetrate out of the corresponding first steel plate, the pair of rotating shafts are connected with bolt holes in the lower part of the cable clamp through bolts, and the arc-shaped upper parts of the side surfaces of the first steel plates are matched with the side surface of the lower part of the cable clamp;
the pair of second steel plates are symmetrically arranged below the pair of first steel plates, the structure of any second steel plate is the same as that of the first steel plate, a pair of notches with upward opening directions are symmetrically arranged at the upper part of any second steel plate along the length direction of the second steel plate, two ends of the lower part of any first steel plate are respectively and fixedly arranged in one of the notches of the pair of second steel plates, and the pair of first steel plates and the pair of second steel plates form a groined structure;
the two connecting rod groups are respectively arranged on the pair of first steel plates, each connecting rod group comprises two pairs of connecting rods which are symmetrically arranged on two sides of the corresponding first steel plate, each connecting rod is horizontally arranged, the inner side surface of each connecting rod is fixedly connected with the outer side surface of the corresponding first steel plate, and two ends of each connecting rod are respectively fixedly connected with the inner side surfaces of the two second steel plates;
and the top of the hydraulic jack of the cable type hydraulic lifting device is positioned between the pair of second steel plates and is connected with the rotating shaft on the pair of second steel plates through a bolt, and the lower anchor head of the cable type hydraulic lifting device is connected with the steel truss girder.
The invention at least comprises the following beneficial effects: the invention utilizes the matching construction of the lifting mechanism, the steel truss girder and the cable crane, solves the difficult problem that the span-in stiffening girder section is higher than the main cable and the lifting height of the cable crane is not enough, avoids the adoption of large-scale equipment such as a large-scale floating crane and the like, is convenient and economic to construct, fully utilizes the technical advantages of each equipment through the cooperative working mode of the cable crane and the lifting mechanism, reduces the technical risk, improves the construction efficiency and ensures the construction progress.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic illustration of a first stiffening beam section installation process according to the present invention;
FIG. 2 is a schematic view of a first stiffened beam section of the present invention installed;
FIG. 3 is a schematic illustration of a second stiffening beam section installation process according to the present invention;
FIG. 4 is a schematic view of a second stiffening beam section of the present invention installed;
FIG. 5 is a schematic side view of the construction of the brace, first stiffening beam section and steel truss of the present invention;
FIG. 6 is a schematic view of the lifting mechanism of the present invention;
FIG. 7 is a schematic structural view of the cord clip of the present invention;
FIG. 8 is a front view schematically illustrating the structure of the first and second steel plates according to the present invention;
fig. 9 is a side view schematically showing the structure of the first and second steel plates according to the present invention.
The specification reference numbers indicate: 1. the main rope, 2, the cable crane, 3, the hydraulic winch, 4, the hoisting mechanism, 5, the first sling, 6, the second sling, 7, the first stiffening beam section, 8, the second stiffening beam section, 9, the steel truss, 10, the inclined strut, 11, the steel wire rope, 12, the flange, 13, the cable clamp, 14, the first steel plate, 15, the second steel plate, 16, the rotating shaft, 17, the connecting rod, 18, the hydraulic jack, 19, the lower anchor head, 20, the bearing steel wire rope, 21, the hoist.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It should be noted that in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-4, the construction method of the stiffening beam segment includes the following steps, wherein the stiffening beam segment is gradually installed from the midspan to two sides from the midspan, and the other side is installed after the stiffening beam segment on one side is installed;
step one, a main cable 1 is composed of two single cables arranged in parallel, a plurality of first slings 5 are symmetrically arranged on the two single cables, a catwalk is arranged below the main cable 1, the catwalk is a temporary construction sidewalk erected below the main cable 1 when a suspension bridge is constructed and parallel to a line of the main cable 1, and is an overhead scaffold for construction work of constructors, the constructors can control two cable cranes 2 with hydraulic winches 3 to move to a hanging beam station on the catwalk, then fixedly install the cable cranes 2 on the main cable 1, and then lower hangers 21 on the cable cranes 2, wherein two hangers 21 are arranged on any cable crane 2, and the first stiffening beam section 7 can be lifted by using the two cable cranes 2, so that the requirement of lifting weight of a span section can be met, and the first stiffening beam section 7 is the span section;
step two, after the first stiffening beam section 7 is transported to a position to be hoisted by a beam transporting ship, workers on the beam transporting ship connect the periphery of the first stiffening beam section 7 with four lifting appliances 21, and then synchronously start two cable cranes 2 to lift the first stiffening beam to a position below the installation position of the main cable 1;
thirdly, after the first stiffening beam section 7 is hung below the installation position of the main cable 1, workers on the catwalk correspondingly arrange a plurality of second slings 6 between the first stiffening beam section 7 and a plurality of first slings 5 above the first stiffening beam section, and two ends of the plurality of second slings 6 are respectively connected with the corresponding first slings 5 and the first stiffening beam section 7, so that the load of the first stiffening beam section 7 is transferred to the plurality of first slings 5, the four slings 21 are loosened, and the two cable cranes 2 are controlled to respectively move to the next beam station relatively and are fixedly installed on the main cable 1;
step four, the number of the lifting mechanisms 4 is four, and workers on the catwalk symmetrically install the four lifting mechanisms 4 on the main cable 1 in a mode that the two lifting mechanisms 4 are arranged on a single cable;
step five, after the steel truss girder 9 is transported to the position right below the first stiffening girder section 7 through a barge, a worker on the catwalk puts down a steel wire rope 11 on one of the hydraulic winches 3, after the worker on the barge connects and fixes the steel wire rope 11 with the steel truss girder 9, the worker on the catwalk starts the hydraulic winches 3 to lift the steel truss girder 9 to the bottom of the first stiffening girder section 7, then connects and fixes the top of the steel truss girder 9 with the bottom of the first stiffening girder through bolts, and then loosens the steel wire rope 11;
step six, connecting four lifting mechanisms 4 with a steel truss girder 9 by a worker on the catwalk, then removing a second sling 6 connected with a first stiffening girder section 7, starting the lifting mechanisms 4 to drive the steel truss girder 9 to move upwards so that the first stiffening girder section 7 moves upwards to the installation position of the first stiffening girder section on the main cable 1, then fixedly connecting the first stiffening girder section 7 with a plurality of first slings 5 positioned right above the first stiffening girder section by the worker, and completing installation of the first stiffening girder section 7, namely completing installation of the span middle girder section;
step seven, after the second stiffening beam section 8 is transported to the position to be hoisted by the beam transporting ship, a worker on the beam transporting ship connects the second stiffening beam section 8 with a hanger 21 of the cable crane 2 right above the second stiffening beam section, and the cable crane 2 is started to lift the second stiffening beam section 8 to be right below the installation position of the main cable 1;
step eight, a synchronous step three, transferring the load of the second stiffening beam section 8 to the first sling 5 by arranging a second sling 6, then loosening the sling 21, moving the cable crane 2 to the position to be hoisted of the next beam section, and fixing the cable crane on the main cable 1;
step nine, moving the beam transporting ship to be under the first stiffening beam section 7, firstly removing the steel trusses 9 from the first stiffening beam section 7 by workers on the catwalk, lowering the steel trusses 9 onto the beam transporting ship through hydraulic winches 3 on adjacent cable-carrying cranes 2, then removing the four lifting mechanisms 4, similarly lowering the steel trusses onto the beam transporting ship through the hydraulic winches 3, then moving the beam transporting ship to be under the second stiffening beam section 8, lifting the four lifting mechanisms 4 onto the main cable 1 through the hydraulic winches 3, installing the lifting mechanisms 4 and the steel trusses 9 on the main cable 1 through the workers on the catwalk, lifting or lowering the lifting mechanisms 4 and the steel trusses 9 through the hydraulic winches 3, placing the lifting mechanisms 4 and the steel trusses 9 through the beam transporting ship, fully utilizing the existing equipment on a construction site, needing no additional lifting equipment, and reducing construction cost;
step ten, a synchronous step five, namely lifting the steel truss girder 9 to the bottom of the second stiffening girder section 8 through the hydraulic winch 3 adjacent to the second stiffening girder section 8, and connecting the steel truss girder with the bottom of the second stiffening girder section 8;
eleven, synchronously lifting the steel truss girder 9 through four lifting mechanisms 4, so as to drive the second stiffening girder section 8 to the installation position of the second stiffening girder section on the main cable 1, fixedly connecting the second stiffening girder section 8 with a plurality of first slings 5 positioned right above the second stiffening girder section, and completing the installation of the second stiffening girder section 8;
step twelve, repeating the step seven to the step eleven, and sequentially installing the subsequent stiffening girder sections until all the stiffening girder sections are completely installed;
in the technical scheme, for the installation of the stiffening girder section, the lifting mechanism 4 and the steel truss girder 9 are utilized and are matched with the cable crane 2 for construction, the difficult problems that the span-in stiffening girder section is higher than the main cable 1 and the lifting height of the cable crane 2 is not enough are solved, large-scale equipment such as a large-scale floating crane is avoided, the construction is convenient and economic, the technical advantages of the equipment are fully utilized, the technical risk is reduced, the construction efficiency is improved, and the construction progress is ensured.
In another technical scheme, a plurality of flanges 12 are symmetrically and fixedly arranged on the top of the steel truss girder 9, and the steel truss girder 9 is connected with the bottom of the stiffening girder section through the plurality of flanges 12.
In this technical scheme, when hydraulic winch 3 promoted steel longeron 9 to the bottom of stiffening girder section, the staff that is located on the catwalk passed stiffening girder section and flange 12 with the bolt in proper order and is connected flange 12 and stiffening girder section through the nut, in order to be in the same place steel longeron 9 and stiffening girder connection, be convenient for stiffening girder section and steel longeron 9's connection and dismantlement through bolted connection, flange 12 sets up between steel longeron 9 and stiffening girder section, when can preventing that steel longeron 9 and stiffening girder section from being connected, it leads to stiffening girder section bottom impaired to produce the friction between steel longeron 9 and the stiffening girder section, thereby influence the aesthetic property of bridge.
In another technical solution, as shown in fig. 5, a plurality of braces 10 are arranged at intervals along the length direction of the steel truss 9, and both ends of any brace 10 are respectively connected with one side of the steel truss 9 and the bottom of the stiffening beam section.
In this technical scheme, a plurality of bracing 10 sets up in the inboard of steel longeron 9, and the both ends of arbitrary bracing 10 are connected with steel longeron 9 and stiffening girder section through the bolt respectively, and the steadiness when stiffening girder section and steel longeron 9 are connected can further be improved to bracing 10, improves high altitude construction's security.
In another solution, as shown in fig. 6-9, any of the lifting mechanisms 4 comprises:
a cable clamp 13, the upper part of which is clamped on the main cable 1;
the upper parts of the first steel plates 14 are tightly attached to a pair of side surfaces of the lower part of the cable clamp 13, the upper part of the side surface of any one first steel plate 14 is in a circular arc shape, the lower part of the side surface of any one first steel plate 14 is in a rectangular shape, rotating shafts 16 are respectively and fixedly arranged on the upper parts of the first steel plates 14, two ends of any one rotating shaft 16 respectively penetrate out of the corresponding first steel plate 14, the rotating shafts 16 are connected with bolt holes in the lower part of the cable clamp 13 through bolts, and the circular arc shape in the upper part of the side surface of the first steel plate 14 is matched with the side surface of the lower part of the cable clamp 13;
a pair of second steel plates 15 symmetrically arranged below the pair of first steel plates 14, wherein the structure of any second steel plate 15 is the same as that of the first steel plate 14, a pair of notches with upward opening directions are symmetrically arranged on the upper part of any second steel plate 15 along the length direction of the second steel plate, two ends of the lower part of any first steel plate 14 are respectively and fixedly arranged in one notch of the pair of second steel plates 15, and the pair of first steel plates 14 and the pair of second steel plates 15 form a groined structure;
the two connecting rod 17 groups are respectively arranged on the pair of first steel plates 14, any connecting rod 17 group comprises two pairs of connecting rods 17 which are symmetrically arranged on two sides of the corresponding first steel plate 14, any connecting rod 17 is horizontally arranged, the inner side surface of the connecting rod 17 is fixedly connected with the outer side surface of the corresponding first steel plate 14, and two ends of any connecting rod 17 are respectively fixedly connected with the inner side surfaces of the two second steel plates 15;
the top of a hydraulic jack 18 of the hydraulic lifting device is positioned between the pair of second steel plates 15 and is connected with a rotating shaft 16 on the pair of second steel plates 15 through a bolt, and a lower anchor head 19 of the hydraulic lifting device is connected with the steel truss girder 9.
In the technical scheme, a cable clamp 13 is used for installing a lifting mechanism 4 on a main cable 1, a rotating shaft 16 at the upper part of a pair of first steel plates 14 is connected with the lower part of the cable clamp 13 through a bolt, a pair of second steel plates 15 arranged in parallel are arranged below the pair of first steel plates 14, any second steel plate 15 is respectively and vertically arranged with the pair of first steel plates 14, the lower parts of the pair of first steel plates 14 are inserted into gaps on the pair of second steel plates 15 to form a groined structure with the pair of second steel plates 15, two sides of the lower part of any first steel plate 14 are respectively provided with two horizontally arranged connecting rods 17, the inner side surface of any connecting rod 17 is fixedly connected with the corresponding outer side surface of the first steel plate 14, two ends are respectively and fixedly connected with the inner side surfaces of the two second steel plates 15, the connecting rods 17 are used for reinforcing the stability of connection between the first steel plates 14 and the second steel plates 15, the upper part of the cable type hydraulic lifting device is connected with the rotating shaft 16 on the pair of second steel plates 15 through a bolt, lower anchor head 19 of lower part is connected with steel longeron 9 for promote steel longeron 9, the axis of rotation 16 that sets up on the first steel sheet 14 can drive first steel sheet 14 and carry out the rotation about in the horizontal direction, and steel cable formula hydraulic lifting device is connected with first steel sheet 14 through second steel sheet 15, namely steel cable formula hydraulic lifting device also can carry out the rotation about along with the axis of rotation 16 on the first steel sheet 14, axis of rotation 16 can drive steel cable formula hydraulic lifting device and rotate around on the second steel sheet 15 of the same reason, axis of rotation 16 on first steel sheet 14 and the second steel sheet 15 makes steel cable formula hydraulic lifting device realize freely rotating in X to and Y to, thereby make when promoting steel longeron 9, even steel longeron 9 rocks can not make steel cable formula hydraulic lifting device produce great rocking yet, it is safer during hoist and mount.
The working principle of the steel cable type hydraulic lifting device for lifting the steel truss girder 9 is as follows: the hydraulic jack 18 is hollow, an upper clamping mechanism is arranged at the upper end of a jack piston, a lower clamping mechanism is arranged at the lower part of a cylinder body, a bearing steel cable 20 is worn between the upper clamping mechanism and the lower clamping mechanism, a lower anchor head 19 is arranged at the lower end of the steel cable, when the lower anchor head 19 is connected with the steel truss beam 9 and then the steel truss beam 9 is lifted, a hydraulic pump station provides pressure oil for the jack to push the piston to move upwards, an upper clamping top arranged at the top end of the piston clamps the bearing steel stranded wire to enable the steel truss beam 9 to move upwards along with the upper clamping top, the lower clamping mechanism clamps the bearing steel stranded wire to ensure that the steel truss beam 9 stays at a new position safely and reliably in the retraction process of the piston, the upper clamping mechanism arranged at the upper end of the piston releases the bearing steel stranded wire, and the return stroke of the piston is ready for lifting of a next stroke.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (4)
1. A construction method for hoisting a stiffening beam of a large-tonnage suspension bridge by cooperation of multiple machines is characterized by comprising the following steps:
s1, arranging a plurality of first suspension ropes at intervals along the length direction of the main cable, wherein one end of any first suspension rope is fixedly connected with the main cable, two cable cranes are fixed on the main cable at intervals along the length direction of the main cable, and a hydraulic winch is further arranged on any cable crane;
s2, transporting the first stiffening beam section to a position to be hung, connecting the first stiffening beam section with the lifting appliances of the two cable cranes, and synchronously starting the two cable cranes to lift the first stiffening beam section to be right below the main cable installation position;
s3, correspondingly arranging a plurality of second slings between the first stiffening beam section and the plurality of first slings positioned right above the first stiffening beam section, connecting one end of any second sling with the other end of the corresponding first sling, connecting the other end of any second sling with the first stiffening beam section, loosening the sling, and then relatively moving the two cable-carried cranes to the position right above the position to be lifted of the next stiffening beam section and fixing the two cable-carried cranes on the main cable;
s4, symmetrically installing four lifting mechanisms on the main cable, wherein any lifting mechanism is positioned right above the first stiffening beam section;
s5, transporting the steel truss girder to the position right below the first stiffening girder section, connecting the steel truss girder with a hydraulic winch of one cable crane, starting the hydraulic winch to lift the steel truss girder to the bottom of the first stiffening girder section, and connecting the steel truss girder with the first stiffening girder section;
s6, connecting the four lifting mechanisms with the steel truss girder, removing the plurality of second slings and synchronously starting the four lifting mechanisms to lift the first stiffening girder section to the installation position of the main cable, fixedly connecting the first stiffening girder section with the plurality of first slings directly above the first stiffening girder section, and completing the installation of the first stiffening girder section;
s7, transporting the second stiffening beam section to a position to be hung, connecting the second stiffening beam section with a hanger of a cable crane directly above the second stiffening beam section, and starting the cable crane to lift the second stiffening beam section to a position directly below the main cable installation position;
s8, correspondingly arranging a plurality of second slings between the second stiffening beam section and the plurality of first slings positioned right above the second stiffening beam section, connecting one end of any second sling with the other end of the first sling, connecting the other end of any second sling with the bottom of the second stiffening beam section, loosening the sling, moving the cable crane to a position to be lifted of the next stiffening beam section, and fixing the cable crane on the main cable;
s9, dismantling the four lifting mechanisms and the steel trusses, arranging the four lifting mechanisms right above the second stiffening girder section, installing the four lifting mechanisms on a main cable, and transporting the steel trusses to the position right below the second stiffening girder section;
s10, connecting the steel truss girder with a hydraulic winch of a cable crane adjacent to the second stiffening girder section, starting the hydraulic winch to lift the steel truss girder to the bottom of the second stiffening girder section, and connecting the steel truss girder with the second stiffening girder section;
s11, fixedly connecting the four lifting mechanisms with the steel truss girder, dismantling the plurality of second slings and synchronously starting the four lifting mechanisms so as to lift the second stiffening girder section to the installation position of the main cable, fixedly connecting the second stiffening girder section with the plurality of first slings directly above the second stiffening girder section, and completing the installation of the second stiffening girder section.
And S12, repeating the steps S7-S11, and sequentially installing the subsequent stiffening girder sections until all the stiffening girder sections are completely installed.
2. The construction method for multi-machine cooperative hoisting of a stiffening girder of a large-tonnage suspension bridge as recited in claim 1, wherein a plurality of flanges are symmetrically and fixedly arranged on the top of the steel truss girder, and the steel truss girder is connected with the bottom of the stiffening girder section through the plurality of flanges.
3. A construction method for multi-machine cooperative hoisting of a stiffening girder of a large-tonnage suspension bridge as defined in claim 1, wherein a plurality of diagonal braces are provided at intervals along the length direction of the steel truss, and both ends of any one of the diagonal braces are respectively connected with one side of the steel truss and the bottom of the stiffening girder section.
4. A construction method for multi-machine cooperative hoisting of a stiffening beam of a large-tonnage suspension bridge as recited in claim 1, wherein any one of the hoisting mechanisms comprises:
the upper part of the cable clamp is clamped on the main cable;
the upper parts of the first steel plates are arranged in a manner of clinging to a pair of side surfaces of the lower part of the cable clamp, the upper part of the side surface of any first steel plate is arc-shaped, the lower part of the side surface of any first steel plate is rectangular, rotating shafts are respectively and fixedly arranged on the upper parts of the first steel plates, two ends of any rotating shaft respectively penetrate out of the corresponding first steel plate, the pair of rotating shafts are connected with bolt holes in the lower part of the cable clamp through bolts, and the arc-shaped upper parts of the side surfaces of the first steel plates are matched with the side surface of the lower part of the cable clamp;
the pair of second steel plates are symmetrically arranged below the pair of first steel plates, the structure of any second steel plate is the same as that of the first steel plate, a pair of notches with upward opening directions are symmetrically arranged at the upper part of any second steel plate along the length direction of the second steel plate, two ends of the lower part of any first steel plate are respectively and fixedly arranged in one of the notches of the pair of second steel plates, and the pair of first steel plates and the pair of second steel plates form a groined structure;
the two connecting rod groups are respectively arranged on the pair of first steel plates, each connecting rod group comprises two pairs of connecting rods which are symmetrically arranged on two sides of the corresponding first steel plate, each connecting rod is horizontally arranged, the inner side surface of each connecting rod is fixedly connected with the outer side surface of the corresponding first steel plate, and two ends of each connecting rod are respectively fixedly connected with the inner side surfaces of the two second steel plates;
and the top of the hydraulic jack of the cable type hydraulic lifting device is positioned between the pair of second steel plates and is connected with the rotating shaft on the pair of second steel plates through a bolt, and the lower anchor head of the cable type hydraulic lifting device is connected with the steel truss girder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111456488.5A CN114108479B (en) | 2021-12-01 | 2021-12-01 | Construction method for multi-machine collaborative hoisting of stiffening beam of large-tonnage suspension bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111456488.5A CN114108479B (en) | 2021-12-01 | 2021-12-01 | Construction method for multi-machine collaborative hoisting of stiffening beam of large-tonnage suspension bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114108479A true CN114108479A (en) | 2022-03-01 |
| CN114108479B CN114108479B (en) | 2023-04-25 |
Family
ID=80369444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111456488.5A Active CN114108479B (en) | 2021-12-01 | 2021-12-01 | Construction method for multi-machine collaborative hoisting of stiffening beam of large-tonnage suspension bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114108479B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532753A (en) * | 2014-12-31 | 2015-04-22 | 中交二公局第二工程有限公司 | Lifting device suitable for lifting and installing suspension bridge stiffening girders |
| CN105332511A (en) * | 2015-11-16 | 2016-02-17 | 上海建工二建集团有限公司 | Huge concrete filled steel tubular column core grouting pouring and tamping device and method |
| CN108004924A (en) * | 2017-11-29 | 2018-05-08 | 中交路桥华南工程有限公司 | The folding method of the middle span of the double hybrid steel in rope face of double tower-mixed steel-concrete composite beam cable-stayed bridge |
| CN208328901U (en) * | 2018-05-03 | 2019-01-04 | 王永志 | A kind of civil engineering reinforcement stake |
| CN109339341A (en) * | 2018-11-30 | 2019-02-15 | 长江大学 | The GFRP pipe concrete coupled column of ribbed stiffener is set in a kind of |
| CN109680616A (en) * | 2019-01-09 | 2019-04-26 | 中交第二航务工程局有限公司 | A liter construction method for equipment hoisting girder is held using deck unit erection gantry collaboration |
| CN109989397A (en) * | 2019-03-19 | 2019-07-09 | 李兆灿 | A kind of square combination formula cement-soil composite pile and its forming method |
-
2021
- 2021-12-01 CN CN202111456488.5A patent/CN114108479B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104532753A (en) * | 2014-12-31 | 2015-04-22 | 中交二公局第二工程有限公司 | Lifting device suitable for lifting and installing suspension bridge stiffening girders |
| CN105332511A (en) * | 2015-11-16 | 2016-02-17 | 上海建工二建集团有限公司 | Huge concrete filled steel tubular column core grouting pouring and tamping device and method |
| CN108004924A (en) * | 2017-11-29 | 2018-05-08 | 中交路桥华南工程有限公司 | The folding method of the middle span of the double hybrid steel in rope face of double tower-mixed steel-concrete composite beam cable-stayed bridge |
| CN208328901U (en) * | 2018-05-03 | 2019-01-04 | 王永志 | A kind of civil engineering reinforcement stake |
| CN109339341A (en) * | 2018-11-30 | 2019-02-15 | 长江大学 | The GFRP pipe concrete coupled column of ribbed stiffener is set in a kind of |
| CN109680616A (en) * | 2019-01-09 | 2019-04-26 | 中交第二航务工程局有限公司 | A liter construction method for equipment hoisting girder is held using deck unit erection gantry collaboration |
| CN109989397A (en) * | 2019-03-19 | 2019-07-09 | 李兆灿 | A kind of square combination formula cement-soil composite pile and its forming method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114108479B (en) | 2023-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101537976B (en) | Dual-tower-mast giant self-lifting crane and following-carrying lifting method thereof | |
| CN113966435A (en) | Wind driven generator mounting and dismounting device and construction method using same | |
| CN201376848Y (en) | Large-scale double-tower automatic-elevation hoisting equipment | |
| CN110685433A (en) | Chimney construction device and construction method applying hydraulic lifting and rollover technology | |
| CN114182647B (en) | Construction method for lifting and turning weak arch | |
| CN115538792A (en) | Residential building machine installation construction method and structure | |
| CN213836318U (en) | Bridge floor wet joint hangs mould structure | |
| CN218434629U (en) | Lifting frame for tower type pier construction | |
| CN114108479B (en) | Construction method for multi-machine collaborative hoisting of stiffening beam of large-tonnage suspension bridge | |
| CN113585860B (en) | Method for assembling and disassembling double-arm holding pole | |
| CN216403632U (en) | Split type cable carries loop wheel machine | |
| CN111236629A (en) | Guyed flexible steel platform formwork for super high-rise building and lifting method | |
| CN211496634U (en) | Main tower integral hoisting system | |
| CN210888045U (en) | Assembled lifting die | |
| CN210886924U (en) | Maintenance platform in retractable double-cable-plane cable-stayed bridge tower stay cable area | |
| CN210505201U (en) | Equipment for hoisting reinforcing steel bars in batches | |
| CN215717067U (en) | Construction platform suitable for concrete composite shear wall structure | |
| CN215564411U (en) | Sliding construction device for high-rise cylindrical building | |
| CN218860148U (en) | Special holding pole and lifting system for hoisting shaft of Yangtze river large-span tower | |
| CN218320410U (en) | Lifting and jacking integrated self-climbing crane | |
| CN218758804U (en) | Guide rail frame dismouting auxiliary device | |
| CN220664643U (en) | T-shaped beam steel reinforcement framework lifting appliance | |
| CN214087427U (en) | Mounting structure of large-tonnage bridge deck crane on high-support small platform | |
| CN214144772U (en) | Self-elevating elevator shaft concrete spreader with hoisting weight | |
| CN216613703U (en) | Hanger device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |