CN101476294B - Mounting method for underbeam segment of large-stride steel box girder stayed-cable bridge - Google Patents
Mounting method for underbeam segment of large-stride steel box girder stayed-cable bridge Download PDFInfo
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- CN101476294B CN101476294B CN2009100582336A CN200910058233A CN101476294B CN 101476294 B CN101476294 B CN 101476294B CN 2009100582336 A CN2009100582336 A CN 2009100582336A CN 200910058233 A CN200910058233 A CN 200910058233A CN 101476294 B CN101476294 B CN 101476294B
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Abstract
The invention relates to a large span steel box girder cable-stayed bridge tower lower beam segment mounting method, belonging to the bridge construction steel box girder construction technology field. The construction method comprises the steps: (1) setting up a masts type crane lifting tower area steel box girder by means of the upper crossbeam of the cable tower and the construction wind; (2) mounting the bridge deck crane in on the tower area steel box girder and lifting the first standard beam segment immediately adjacent to the tower area steel box girder; (3) mounting the bridge deck crane symmetrically on the mounted first standard beam segment, and starting the standard beam segment symmetrical hanging on both the river side and the bank side. The method in the invention achieves the advantages of simple, practical, safe, reliable, economic, convenient less limited by the construction condition, solves the problems in present large span steel box girder cable-stayed bridge construction process.
Description
Technical field:
The invention belongs to bridge and build the steel box girder construction technical field, particularly be a kind of large-span steel box girder stayed-cable bridge tower lower beam segment mounting method.
Background technology:
Along with the continuous development of bridge design and building technology, the large-span steel box girder stayed-cable bridge is built more and more.But, in the process of construction of large-span steel box girder stayed-cable bridge, still exist many difficult problems of not capturing as yet.For example: how safety, economical, finish this problem of construction of large-span steel box girder stayed-cable bridge tower underbeam section apace, just never be well solved.Large-span steel box girder stayed-cable bridge tower lower beam segment mounting method in the past has: support loop wheel machine method and support crane barge method, but all there is tangible problem in these two kinds of methods.Support loop wheel machine method be king-post basis end face set up with the contour support of lower transverse beam after, amplitude variation type bridge floor loop wheel machine is placed in the top of support, the beam section that rises under the tower crane with amplitude variation type bridge floor loop wheel machine is positioned on the support, again by pulling the installation of finishing tower underbeam section in place.This method is installed extremely complexity of tower underbeam section process, needs design and makes the very big bridge floor loop wheel machine of luffing, and need the support of repeated disassembled and assembled bridge floor loop wheel machine in the process of this method of enforcement, and this makes that undoubtedly the construction period is longer, and construction cost is higher.Support crane barge method be king-post basis end face set up with the contour support of lower transverse beam after, the beam section that rises under the tower crane with large-scale floating crane is positioned on the support, again by pulling the installation of finishing tower underbeam section in place.Tower underbeam section is installed in this way, not only construction cost is very high, but also will be subjected to the restriction of job site condition: because large-scale floating crane is capable deeply generally bigger, this just requires near the waters the king-post basis that the enough depth of water must be arranged, otherwise this method just can't be implemented fully.
Summary of the invention:
The objective of the invention is for overcoming the problem of above-mentioned existence, a kind of large-span steel box girder stayed-cable bridge tower lower beam segment mounting method is provided.
The construction sequence of large-span steel box girder stayed-cable bridge tower lower beam segment mounting method of the present invention is:
The construction wind structure of using during (1) by Sarasota top rail and Sarasota construction is set up the masts type loop wheel machine and is played tower crane district steel case beam,
(2) the bridge floor loop wheel machine is installed on tower district steel case beam, the first segment standard beam section of lifting next-door neighbour tower district steel case beam,
(3) on mounted first segment standard beam section, install the bridge floor loop wheel machine symmetrically, the symmetry lifting of beginning middle of the river side and bank side standard beam section.
The construction sequence of above-mentioned large-span steel box girder stayed-cable bridge tower lower beam segment mounting method is:
A, on the Sarasota lower transverse beam, set up small-sized falsework and steel case beam movement track be installed thereon,
B, the masts type loop wheel machine of tower district steel case beam lifting is installed on Sarasota top rail and above construction wind structure thereof, between king-post,
C, with the masts type loop wheel machine rise on the steel case beam movement track of tower crane district steel case beam to the small-sized falsework successively and movement in place,
D, the bridge floor loop wheel machine is installed on the tower district of installation steel case beam,
E, usefulness is the bridge floor loop wheel machine lifting middle of the river side first segment standard beam section of installation in position, and installation in position is also finished the extension rope,
F, dismounting bridge floor loop wheel machine and commutation are installed on the tower district steel case beam,
G, lifting bank side first segment standard beam section is in place and finish the extension rope,
H, the bridge floor loop wheel machine is run on the bank side first segment standard beam section,
I, in the middle of a river bridge floor loop wheel machine, the symmetry lifting construction of beginning middle of the river side and bank side standard beam section be installed on the side first segment standard beam section.
The Sarasota top rail of the mast of above-mentioned installation masts type loop wheel machine is the top rail of cable stayed bridge king-tower.
Above-mentioned construction wind structure is a Steel Space Truss, on construction wind structure the dorsal funciculus tackle pulley is arranged.Construction wind structure not only can increase the stability of the above body of the tower of Sarasota top rail in construction, and it can also be used to install the dorsal funciculus tackle pulley that tower district steel case beam lifts by crane the masts type loop wheel machine of usefulness.
Above-mentioned masts type loop wheel machine is by mast, bearing, the dorsal funciculus tackle pulley, the dorsal funciculus hoist engine, the dorsal funciculus steel cable, the lifting tackle pulley, play sling, lifting hoist engine and lifting steel cable are formed, bearing is embedded on the Sarasota top rail, be hinged with the lower end pin of mast, the upper end of mast is connected with the lifting tackle pulley with the dorsal funciculus tackle pulley respectively, dorsal funciculus hoist engine and lifting hoist engine are separately fixed on the operation platform, the dorsal funciculus tackle pulley is connected with the dorsal funciculus hoist engine by the dorsal funciculus steel cable, the lifting tackle pulley is connected with the lifting hoist engine by the lifting steel cable, plays the lower end that sling is installed in the lifting tackle pulley.
Above-mentioned mast is the mast of bridge floor loop wheel machine or is installed in steel mast on the Sarasota top rail.
The tower underbeam section mounting method of large-span steel box girder stayed-cable bridge of the present invention is simple and practical, safe and reliable, economical convenient and be subjected to the construction condition restriction little.Solved the difficult problem in the present large-span steel box girder stayed-cable bridge process of construction.
Description of drawings:
Fig. 1 is one of the construction lateral view that plays the tower crane beam section of the tower underbeam section mounting method of a kind of large-span steel box girder stayed-cable bridge of the present invention.
Fig. 2 is one of the construction front view that plays the tower crane beam section of the tower underbeam section mounting method of a kind of large-span steel box girder stayed-cable bridge of the present invention.
Fig. 3 be a kind of large-span steel box girder stayed-cable bridge of the present invention tower underbeam section mounting method the construction lateral view that plays the tower crane beam section two.
Fig. 4 be a kind of large-span steel box girder stayed-cable bridge of the present invention tower underbeam section mounting method the construction front view that plays the tower crane beam section two.
Fig. 5 be a kind of large-span steel box girder stayed-cable bridge of the present invention tower underbeam section mounting method the construction lateral view that plays the tower crane beam section three.
Fig. 6 be a kind of large-span steel box girder stayed-cable bridge of the present invention tower underbeam section mounting method the construction front view that plays the tower crane beam section three.
Fig. 7 is one of the construction lateral view of installation code beam section of the tower underbeam section mounting method of a kind of large-span steel box girder stayed-cable bridge of the present invention.
Fig. 8 is one of the construction front view of installation code beam section of the tower underbeam section mounting method of a kind of large-span steel box girder stayed-cable bridge of the present invention.
Fig. 9 be a kind of large-span steel box girder stayed-cable bridge of the present invention tower underbeam section mounting method installation code beam section the construction lateral view two.
Figure 10 be a kind of large-span steel box girder stayed-cable bridge of the present invention tower underbeam section mounting method installation code beam section the construction front view two.
Figure 11 is the symmetry lifting construction lateral view of case beam of the tower underbeam section mounting method of a kind of large-span steel box girder stayed-cable bridge of the present invention.
Figure 12 is the symmetry lifting construction front view of case beam of the tower underbeam section mounting method of a kind of large-span steel box girder stayed-cable bridge of the present invention.
The specific embodiment:
The Jing Yue Changjiang River Highway Bridge is the controlled engineering that Suizhou to Yueyang speedway is crossed over the Changjiang river in Hubei Province's " six vertical five horizontal rings " skeleton highway network planning.Main bridge is the two asymmetric hybrid beam cable stayed bridges of rope face of main span 816m double tower.Bridge north main bridge (100m+298m)+816m/2 be in light weight, wind resistance good, Plate of Flat Steel Box Girder handsome in appearance, stride longitudinal section in the main bridge and be positioned at radius R=34650m, length of tangent line T=408.18m, vow circular curve that northern main bridge deck profile grade is 0.356% apart from E=2.4m.Bridge master bridge bridge floor is two-way six-lane, bridge floor effective width 33.5m.
Bridge floor steel case beam is the bilateral box structure of separate type, and the centre connects with gooseneck.Steel case beam is made up of bridge floor top board, base plate, endosternum, outer web, diaphragm, tuyere, anchoring structure etc.The high 3.8m of profile in the steel case beam centerline, overall with is that (contain Bu Suo district and tuyere 2 * 2.5m), be 36.5m in Sarasota place deck-siding constriction to 38.5m, and bridge deck are established 2% two-way horizontal wall inscription, standard beam segment length 15m, maximum lifting weight 317.5t.North tower side is totally 57 girder steel sections, 3 sections in tower district, 26 companies of end bay side socket section, 1 termination sections, 1 end bay closure sections, 26 companies of main span side socket section.
Be subjected to the condition restriction of construction area, large-scale floating crane can't arrive, the main bridge in Jing Yue Changjiang River Highway Bridge north is with the tower underbeam section mounting method of a kind of large-span steel box girder stayed-cable bridge of the present invention, with masts type loop wheel machine and amplitude variation type bridge floor loop wheel machine and small-sized falsework, finish the construction of steel case beam beam section under the northern main bridge tower.
Embodiment 1:
Shown in Fig. 1～12, the construction sequence of the tower underbeam section mounting method of large-span steel box girder stayed-cable bridge of the present invention is:
The construction wind structure of using during (1) by Sarasota top rail 1 and Sarasota construction 2 is set up 3 tower crane districts of masts type loop wheel machine steel case beam 4,9,24,
(2) bridge floor loop wheel machine 5,19 is installed on tower district steel case beam 4,9,24, the first segment standard beam section 6,20 of lifting next-door neighbour tower district steel case beam 4,24,
(3) on mounted first segment standard beam section 6,20, install bridge floor loop wheel machine 5,19 symmetrically, the symmetry lifting of beginning middle of the river side and bank side standard beam section 21,22.
The construction sequence of above-mentioned large-span steel box girder stayed-cable bridge tower lower beam segment mounting method is:
A, on Sarasota lower transverse beam 7, set up small-sized falsework 23 and steel case beam movement track 8 be installed thereon,
B, the masts type loop wheel machine 3 of tower district steel case beam 4,9,24, lifting is installed on Sarasota top rail 1 and above construction wind structure 2 thereof, between king-post,
C, with masts type loop wheel machine 3 rise on the steel case beam movement track 8 of tower crane district steel case beam 4,9,24 to the small-sized falsework 23 successively and movement in place,
D, bridge floor loop wheel machine 5 is installed on the tower district of installation steel case beam 4,9,24,
E, usefulness is the bridge floor loop wheel machine 5 lifting middle of the river side first segment standard beam sections 6 of installation in position, and installation in position is also finished the extension rope,
F, dismounting bridge floor loop wheel machine 5 and commutation are installed on the tower district steel case beam 4,9,24,
G, lifting bank side first segment standard beam section 20 are in place and finish the extension rope,
H, bridge floor loop wheel machine 5 is run on the bank side first segment standard beam section 20,
I, in the middle of a river bridge floor loop wheel machine 19, the symmetry lifting construction of beginning middle of the river side and bank side standard beam section 21,22 be installed on the side first segment standard beam section 6.
The Sarasota top rail 1 of the mast of above-mentioned installation masts type loop wheel machine 3 is top rails of cable stayed bridge king-tower.
Above-mentioned construction wind structure 2 is Steel Space Truss, on construction wind structure 2 dorsal funciculus tackle pulley 12 is arranged.Construction wind structure 2 not only can increase the stability of Sarasota top rail 1 above body of the tower in construction, and it can also be used to install the dorsal funciculus tackle pulley 12 that tower district steel case beam 4,9,24 lifts by crane the masts type loop wheel machine 3 of usefulness.
Above-mentioned masts type loop wheel machine 3 is by mast 14, bearing 15, dorsal funciculus tackle pulley 12, dorsal funciculus hoist engine 16, dorsal funciculus steel cable 13, lifting tackle pulley 17, play sling 25, lifting hoist engine 18 and lifting steel cable 10 are formed, bearing 15 is embedded on the Sarasota top rail 1, be hinged with the lower end pin of mast 14, the upper end of mast 14 is connected with lifting tackle pulley 17 with dorsal funciculus tackle pulley 12 respectively, dorsal funciculus hoist engine 16 and lifting hoist engine 18 are separately fixed on the operation platform 11, dorsal funciculus tackle pulley 12 is connected with dorsal funciculus hoist engine 16 by dorsal funciculus steel cable 13, lifting tackle pulley 17 is connected with lifting hoist engine 18 by lifting steel cable 10, plays the lower end that sling 25 is installed in lifting tackle pulley 17.
Above-mentioned mast 14 is masts of bridge floor loop wheel machine 5,19.
Embodiment 2:
Remove: E, usefulness is the bridge floor loop wheel machine 5 lifting bank side first segment standard beam sections 20 of installation in position, installation in position is also finished the extension rope, G, lifting middle of the river side first segment standard beam section 20 are in place and finish the extension rope, H, bridge floor loop wheel machine 5 is run on the middle of the river side first segment standard beam section 6, I, bridge floor loop wheel machine 19 is installed on bank side first segment standard beam section 20, outside the symmetry lifting construction of beginning middle of the river side and bank side standard beam section 21,22, all the other are all identical with embodiment 1.
Embodiment 3:
Except that: mast 14 was mounted in steel mast on the Sarasota top rail 1, all the other were all identical with embodiment 1.
Embodiment 4:
Remove: D, at the tower district of installation steel case beam 4,9, bridge floor loop wheel machine 19 is installed on 24, E, bridge floor loop wheel machine 19 lifting middle of the river side first segment standard beam sections 6 with installation in position, installation in position is also finished the extension rope, F, remove bridge floor loop wheel machine 19 and commutate and be installed on tower district steel case beam 4,9, on 24, G, lifting bank side first segment standard beam section 20 is in place and finish the extension rope, H, bridge floor loop wheel machine 19 is run on the bank side first segment standard beam section 20, I, bridge floor loop wheel machine 5 is installed on the side first segment standard beam section 6 in the middle of a river, beginning middle of the river side and bank side standard beam section 21, outside 22 the symmetry lifting construction, all the other are all identical with embodiment 1.
Embodiment 5:
Remove: E, usefulness is the bridge floor loop wheel machine 19 lifting bank side first segment standard beam sections 20 of installation in position, installation in position is also finished the extension rope, G, lifting middle of the river side first segment standard beam section 20 are in place and finish the extension rope, H, bridge floor loop wheel machine 19 is run on the middle of the river side first segment standard beam section 6, I, bridge floor loop wheel machine 5 is installed on bank side first segment standard beam section 20, outside the symmetry lifting construction of beginning middle of the river side and bank side standard beam section 21,22, all the other are all identical with embodiment 1.
Claims (5)
1. large-span steel box girder stayed-cable bridge tower lower beam segment mounting method is characterized in that construction sequence is:
The construction wind structure of using during (1) by Sarasota top rail (1) and Sarasota construction (2) is set up masts type loop wheel machine (3) and is played tower crane district steel case beam (4,9,24);
(2) go up installation bridge floor loop wheel machine (5,19), the first segment standard beam section (6,20) of lifting next-door neighbour's tower district's steel case beam (4,24) at tower district steel case beam (4,9,24);
(3) on mounted first segment standard beam section (6,20), install bridge floor loop wheel machine (5,19) symmetrically, the symmetry lifting of beginning middle of the river side and bank side standard beam section (21,22);
Concrete construction sequence is:
A, on Sarasota lower transverse beam (7), set up small-sized falsework (23) and steel case beam movement track (8) is installed thereon;
B, go up, install between king-post the masts type loop wheel machine (3) of tower district's steel case beam (4,9,24) lifting at Sarasota top rail (1) and above construction wind structure (2) thereof;
C, play successively with masts type loop wheel machine (3) that the steel case beam movement track (8) of tower crane district steel case beam (4,9,24) to the small-sized falsework (23) gone up and movement is in place;
D, bridge floor loop wheel machine (5) go up to be installed at the tower district of installation steel case beam (4,9,24);
E, usefulness is bridge floor loop wheel machine (5) the lifting middle of the river side first segment standard beam section (6) of installation in position, and installation in position is also finished the extension rope;
F, dismounting bridge floor loop wheel machine (5) and commutation are installed on the tower district steel case beam (4,9,24);
G, lifting bank side first segment standard beam section (20) is in place and finish the extension rope;
H, bridge floor loop wheel machine (5) is run on the bank side first segment standard beam section (20);
I, side first segment standard beam section (6) go up to be installed bridge floor loop wheel machine (19) in the middle of a river, the symmetry lifting construction of beginning middle of the river side and bank side standard beam section (21,22).
2. large-span steel box girder stayed-cable bridge tower lower beam segment mounting method according to claim 1, the Sarasota top rail (1) that it is characterized in that installing the mast of masts type loop wheel machine (3) is the top rail of cable stayed bridge king-tower.
3. large-span steel box girder stayed-cable bridge tower lower beam segment mounting method according to claim 1, the wind structure (2) that it is characterized in that constructing is a Steel Space Truss, on construction wind structure (2) dorsal funciculus tackle pulley (12) is arranged.
4. large-span steel box girder stayed-cable bridge tower lower beam segment mounting method according to claim 1 and 2, it is characterized in that masts type loop wheel machine (3) is by mast (14), bearing (15), dorsal funciculus tackle pulley (12), dorsal funciculus hoist engine (16), dorsal funciculus steel cable (13), lifting tackle pulley (17), play sling (25), lifting hoist engine (18) and lifting steel cable (10) are formed, bearing (15) is embedded on the Sarasota top rail (1), be hinged with the lower end pin of mast (14), the upper end of mast (14) is connected with lifting tackle pulley (17) with dorsal funciculus tackle pulley (12) respectively, dorsal funciculus hoist engine (16) and lifting hoist engine (18) are separately fixed on the operation platform (11), dorsal funciculus tackle pulley (12) is connected with dorsal funciculus hoist engine (16) by dorsal funciculus steel cable (13), lifting tackle pulley (17) is connected with lifting hoist engine (18) by lifting steel cable (10), plays the lower end that sling (25) is installed in lifting tackle pulley (17).
5. large-span steel box girder stayed-cable bridge tower lower beam segment mounting method according to claim 4 is characterized in that mast (14) is the mast of bridge floor loop wheel machine (5,19) or is installed in steel mast on the Sarasota top rail (1).
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| CN2009100582336A CN101476294B (en) | 2009-01-22 | 2009-01-22 | Mounting method for underbeam segment of large-stride steel box girder stayed-cable bridge |
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| CN101476294B true CN101476294B (en) | 2010-10-27 |
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