CN101509229B - Shelf beam support -free construction method for edge span beam section of large-span steel case beam stayed-cable bridge - Google Patents
Shelf beam support -free construction method for edge span beam section of large-span steel case beam stayed-cable bridge Download PDFInfo
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- CN101509229B CN101509229B CN200910058765XA CN200910058765A CN101509229B CN 101509229 B CN101509229 B CN 101509229B CN 200910058765X A CN200910058765X A CN 200910058765XA CN 200910058765 A CN200910058765 A CN 200910058765A CN 101509229 B CN101509229 B CN 101509229B
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Abstract
The invention relates to a method for constructing a large-span steel box girder cable-stayed bridge side span girder section without shelf beam frame. The method comprises the steps as follows: a small falsework is set up at the top of an auxiliary pier; a steel box girder section at the top of the auxiliary pier is hoisted and is arranged at the small falsework and behind the top of the auxiliary pier; a part of the small falsework at the side of the river center is dismounted; the steel box girder section close to the auxiliary pier at the side of the river center is hoisted, and the installation and cable installation are finished; the steel box girder section at the top of the auxiliary pier is positioned, and corresponding connection and installation are finished; the construction for hoisting the side span standard steel box girder section between the auxiliary pier and a junction pier is finished; a front falsework and a back falsework are set up at the top of the junction pier; and the construction for hoisting the steel box girder section at the top of the junction pier and the steel box girder section close to the side of the river center close to the junction pier is finished. The construction method is simple, practical, safe and reliable and is restricted by the field environment condition less, and compared with the method for installing the large-span steel box girder cable-stayed bridge side span girder section, the construction method has very good economic performance.
Description
Technical field:
The invention belongs to bridge and build the steel box girder construction technical field, particularly be that a kind of large-span steel box girder stayed-cable bridge end bay beam section does not have the method for putting boom support construction.
Background technology:
Along with the continuous development of bridge design and building technology, the large-span steel box girder stayed-cable bridge of building is more and more.In the work progress of large-span steel box girder stayed-cable bridge, owing to be subjected to the restriction of site operation ambient conditions, the lifting construction of end bay steel case beam beam section adopts usually: 1. in the end bay scope, set up put boom support after with large-tonnage crane barge lifting end bay steel case beam beam section to the middle of the river side of putting boom support, traction or pushing tow move in placely one by one again, finish the installation of the end bay steel case beam beam section of putting on the boom support successively and hang rope according to main span steel case beam beam section installation situation then.2. lift this two piers pier top steel box girder beam section with the large-tonnage crane barge after auxiliary pier and boundary Dun Chu set up support, the steel case beam beam section between two piers then adopts the lifting of bridge floor loop wheel machine.These two kinds of methods all must be used the large-tonnage crane barge, and the admission fee of large-tonnage crane barge and usage charges are all very high.If finish the construction of the end bay beam section of large-span steel box girder stayed-cable bridge with above-mentioned two kinds of methods, only spend in construction cost on the crane barge just more than 5,000,000 yuan, and because the row of large-tonnage crane barge is deeply generally bigger, this just requires near the waters the end bay that the enough depth of water must be arranged, otherwise above two kinds of methods just can't be implemented fully.If finish the construction of end bay beam section with 1. described methods, except that the crane barge use cost, also have between pier over one hundred meter put boom support and need set up, this will increase by 500～1,000 ten thousand yuan again and set up the cost of putting boom support and the duration about 3 months.How safety, economical, finish this problem of construction of large-span steel box girder stayed-cable bridge end bay beam section apace, never be well solved.
Summary of the invention:
The objective of the invention is for overcoming the problem of above-mentioned existence, provide a kind of large-span steel box girder stayed-cable bridge end bay beam section not have and put the method that boom support is constructed.
Technical scheme of the present invention is achieved in that
Large-span steel box girder stayed-cable bridge end bay beam section of the present invention does not have the method for putting the boom support construction, and its construction sequence is as follows:
(1) set up small-sized falsework at auxiliary pier Dun Ding, lifting auxiliary pier pier top steel box girder beam section also places on the small-sized falsework and auxiliary pier Dun Ding place,
(2) middle of the river side part of the small-sized falsework of dismounting, the steel case beam beam section of lifting middle of the river side next-door neighbour auxiliary pier is also finished and is installed and hang rope,
It is (3) auxiliary pier pier top steel box girder beam section is in place and finish corresponding connection and installation,
(4) finish the lifting construction of the end bay standard steel case beam beam section between auxiliary pier and boundary pier,
(5) set up falsework at boundary Dun Dunding, finish the lifting construction of the steel case beam beam section of boundary pier pier top steel box girder beam section and middle of the river side next-door neighbour boundary pier.
Above-mentioned construction sequence (1) is behind the lifting construction of finishing Sarasota bank side standard steel case beam beam section, set up small-sized falsework at auxiliary pier Dun Ding, park in place with fortune beam Ship Transportation auxiliary pier pier top steel box girder beam section to auxiliary pier middle of the river side, the amplitude variation type bridge floor loop wheel machine luffing lifting auxiliary pier pier top steel box girder beam section that makes progress is surpassed small-sized falsework end face absolute altitude until its bottom surface absolute altitude, the downward luffing of amplitude variation type bridge floor loop wheel machine is positioned over auxiliary pier pier top steel box girder beam section on the small-sized falsework, traction of auxiliary pier pier top steel box girder beam section or pushing tow are moved to auxiliary pier Dun Ding place.
Above-mentioned construction sequence (2) is to move on the small-sized falsework and after auxiliary pier Dun Ding puts in place in auxiliary pier pier top steel box girder beam section, remove the middle of the river side part of small-sized falsework, steel case beam beam section to auxiliary pier middle of the river side with fortune beam Ship Transportation middle of the river side next-door neighbour auxiliary pier is parked in place, adjust the angle of amplitude variation type bridge floor loop wheel machine mast, the steel case beam beam section of lifting middle of the river side next-door neighbour auxiliary pier is also finished and being connected and hanging rope of Sarasota bank side standard steel case beam beam section.
Above-mentioned construction sequence (3) is after the installation of the steel case beam beam section of finishing middle of the river side next-door neighbour auxiliary pier and hanging rope, amplitude variation type bridge floor loop wheel machine is run on the steel case beam beam section of middle of the river side next-door neighbour auxiliary pier, adjust the angle of amplitude variation type bridge floor loop wheel machine mast, lifting is placed on the auxiliary pier pier top steel box girder beam section at small-sized falsework and auxiliary pier Dun Ding place and finishes intersegmental being connected of steel case beam beam that auxiliary pier pier top steel box girder beam section and middle of the river side are close to auxiliary pier.
Above-mentioned construction sequence (5) is behind the lifting construction of finishing end bay standard steel case beam beam section, before boundary Dun Dunding sets up, back falsework, the front end that supports rear end and back falsework of preceding falsework is used to horizontally rotate and is hinged, bottom the diagonal brace of preceding falsework, set and horizontally rotate hinge, horizontally rotate under rotating to cut with scissors to reach and horizontally rotate hinge, falsework is positioned at the direction across bridge position before making, park in place with fortune beam Ship Transportation boundary pier pier top steel box girder beam section in the pier middle of the river, boundary side, the end face absolute altitude that surpasses the back falsework with amplitude variation type bridge floor loop wheel machine lifting boundary pier pier top steel box girder beam section until its bottom surface absolute altitude, horizontally rotate under rotating to cut with scissors to reach and horizontally rotate hinge, falsework is positioned at along bridge to the position before making, with the downward luffing of amplitude variation type bridge floor loop wheel machine, boundary pier pier top steel box girder beam section is positioned on preceding falsework and the back falsework, traction or pushing tow move boundary pier pier top steel box girder beam Duan Zhihou falsework and boundary Dun Dunding, horizontally rotating under preceding falsework middle of the river side fore-end of dismounting or the rotation to cut with scissors to reach to horizontally rotate to cut with scissors makes preceding falsework be positioned at the direction across bridge position, the lifting that is close to the steel case beam beam section of boundary pier for middle of the river side provides enough operating spaces, be close to the steel case beam beam section of boundary pier and park in place with fortune beam Ship Transportation middle of the river side, be close to the steel case beam beam section of boundary pier and finish installation and the extension rope with amplitude variation type bridge floor loop wheel machine lifting middle of the river side, amplitude variation type bridge floor loop wheel machine is run on the steel case beam beam section of side next-door neighbour boundary, middle of the river pier, lifting is placed on the falsework of back and the boundary pier pier top steel box girder beam section of boundary Dun Dunding, finishes intersegmental being connected of steel case beam beam that boundary pier pier top steel box girder beam section and middle of the river side are close to the boundary pier.
It is simple and practical, safe and reliable that large-span steel box girder stayed-cable bridge end bay beam section of the present invention does not have the method for putting the boom support construction, is subjected to the field environmental condition restriction little.With the mounting method of existing large-span steel box girder stayed-cable bridge end bay beam section comparatively speaking, can save surplus the large-scale floating crane cost of use 500 ten thousand yuan and set up cost 500～1,000 ten thousand yuan of putting boom support, about 3 months reductions of erection time, have excellent economy.
Description of drawings:
Fig. 1 is the end bay steel case beam beam section construction rough package drawing that large-span steel box girder stayed-cable bridge end bay beam section does not have the method for putting the boom support construction.
Fig. 2 is one of lifting construction lateral view of the large-span steel box girder stayed-cable bridge end bay beam section auxiliary pier pier top steel box girder beam section of not having the method for putting boom support construction.
Fig. 3 be the large-span steel box girder stayed-cable bridge end bay beam section auxiliary pier pier top steel box girder beam section of not having the method for putting boom support construction the lifting construction lateral view two.
Fig. 4 be the large-span steel box girder stayed-cable bridge end bay beam section auxiliary pier pier top steel box girder beam section of not having the method for putting boom support construction the lifting construction lateral view three.
Fig. 5 is one of the lifting construction lateral view of the steel case beam beam section of the large-span steel box girder stayed-cable bridge end bay beam section middle of the river side next-door neighbour auxiliary pier that do not have the method for putting boom support construction.
Fig. 6 be the large-span steel box girder stayed-cable bridge end bay beam section middle of the river side next-door neighbour auxiliary pier that do not have the method for putting boom support construction steel case beam beam section the lifting construction lateral view two.
Fig. 7 is the construction lateral view that large-span steel box girder stayed-cable bridge end bay beam section does not have the adjustment auxiliary pier pier top steel box girder beam fragment position of the method for putting the boom support construction.
Fig. 8 is that large-span steel box girder stayed-cable bridge end bay beam section does not have the auxiliary pier of the method for putting the boom support construction and the lifting construction lateral view of the end bay standard steel case beam beam section between the pier of boundary.
Fig. 9 is one of lifting construction lateral view of the large-span steel box girder stayed-cable bridge end bay beam section boundary pier pier top steel box girder beam section of not having the method for putting boom support construction.
Figure 10 be the large-span steel box girder stayed-cable bridge end bay beam section boundary pier pier top steel box girder beam section of not having the method for putting boom support construction the lifting construction lateral view two.
Figure 11 be the large-span steel box girder stayed-cable bridge end bay beam section boundary pier pier top steel box girder beam section of not having the method for putting boom support construction the lifting construction lateral view three.
Figure 12 is the lifting construction lateral view of the steel case beam beam section of large-span steel box girder stayed-cable bridge end bay beam section side next-door neighbour boundary, the middle of the river pier that do not have the method for putting boom support construction.
Figure 13 is the construction lateral view that large-span steel box girder stayed-cable bridge end bay beam section does not have the adjustment boundary pier pier top steel box girder beam fragment position of the method for putting the boom support construction.
The specific embodiment:
The Jing Yue Changjiang River Highway Bridge is that Suizhou to Yueyang speedway is crossed over the controlled engineering in 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, and the bridge floor effective width is 33.5m.Bridge floor steel case beam is the bilateral box structure of separate type, and the centre connects with gooseneck.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 Sarasota side is totally 57 girder steel sections, 3 sections in tower district, 26 companies of northern Sarasota bank side socket section, 1 termination sections, 1 end bay closure sections, 26 companies of northern Sarasota river side socket section.Be subjected to the condition restriction of construction area, large-scale floating crane can't arrive, Jing Yue Changjiang River Highway Bridge end bay steel case beam beam section does not have the method for putting the boom support construction with large-span steel box girder stayed-cable bridge end bay beam section of the present invention, cooperates the construction of finishing end bay steel case beam beam section with amplitude variation type bridge floor loop wheel machine.
Embodiment 1:
As shown in Figure 1, large-span steel box girder stayed-cable bridge end bay beam section of the present invention does not have the method for putting the boom support construction, and its construction sequence is as follows:
(1) set up small-sized falsework 2 at auxiliary pier 1 Dun Ding place, lifting auxiliary pier 1 pier top steel box girder beam section 4 also places on the small-sized falsework 2 and auxiliary pier 1 Dun Ding place,
(2) middle of the river side part 14 of the small-sized falsework 2 of dismounting, the steel case beam beam section 5 of lifting middle of the river side next-door neighbour auxiliary pier 1 is also finished and is installed and hang rope,
It is (3) auxiliary pier 1 pier top steel box girder beam section 4 is in place and finish corresponding connection and installation,
(4) finish the lifting construction of auxiliary pier 1 and the end bay standard steel case beam beam section 7 of boundary pier 6,
(5) set up forward and backward falsework 9,15 at place, Dun6Dun top, boundary, finish the lifting construction of the steel case beam beam section 11 of boundary pier 6 pier top steel box girder beam sections 10 and middle of the river side next-door neighbour boundary pier 6.
Shown in Fig. 2～4, above-mentioned construction sequence (1) is behind the lifting construction of finishing Sarasota bank side standard steel case beam beam section 12, set up small-sized falsework 2 at auxiliary pier 1 Dun Ding, park in place with fortune beam ship 13 transportation auxiliary piers 1 pier top steel box girder beam section 4 to auxiliary pier 1 middle of the river side, with amplitude variation type bridge floor loop wheel machine 3 upwards luffing lifting auxiliary pier 1 pier top steel box girder beam section 4 surpass small-sized falsework 2 end face absolute altitudes until its bottom surface absolute altitude, amplitude variation type bridge floor loop wheel machine 3 downward luffings are positioned over auxiliary pier 1 pier top steel box girder beam section 4 on the small-sized falsework 2, move on the small-sized falsework 24 tractions of auxiliary pier 1 pier top steel box girder beam section and auxiliary pier 1 Dun Ding place.
Shown in Fig. 5～6, above-mentioned construction sequence (2) is after auxiliary pier 1 pier top steel box girder beam section 4 moves to auxiliary pier 1 Dun Ding and puts in place, remove the middle of the river side part 14 of small-sized falsework 2, steel case beam beam section 5 to auxiliary pier 1 middle of the river side with fortune beam ship 13 transportation middle of the river side next-door neighbour auxiliary piers 1 is parked in place, adjust the angle of amplitude variation type bridge floor loop wheel machine 3 masts, the steel case beam beam section 5 of lifting middle of the river side next-door neighbour auxiliary pier 1 is also finished and being connected and hanging rope of Sarasota bank side standard steel case beam beam section 12.
As shown in Figure 7, above-mentioned construction sequence (3) is after the installation of the steel case beam beam section 5 of finishing middle of the river side next-door neighbour auxiliary pier 1 and hanging rope, amplitude variation type bridge floor loop wheel machine 3 is run on the steel case beam beam section 5 of middle of the river side next-door neighbour auxiliary pier 1, adjust the angle of amplitude variation type bridge floor loop wheel machine 3 masts, lifting is placed on the small-sized falsework 2 and the auxiliary pier 1 pier top steel box girder beam section 4 at auxiliary pier 1 Dun Ding place and finishing being connected of 5 of steel case beam beam sections that auxiliary pier 1 pier top steel box girder beam section 4 and middle of the river side are close to auxiliary pier 1.
As shown in Figure 8, above-mentioned construction sequence (4) is the lifting construction in the end bay standard steel case beam beam section 7 of finishing 6 on auxiliary pier 1 and boundary pier.
Shown in Fig. 9～13, above-mentioned construction sequence (5) is behind the lifting construction of finishing end bay standard steel case beam beam section 7, before set up on Dun6Dun top in boundary, back falsework 9,15, before the front end that supports rear end and back falsework 15 of falsework 9 use to horizontally rotate and cut with scissors 16 and be connected, bottom the diagonal brace of preceding falsework 9, set and horizontally rotate hinge 8, rotate horizontally rotate down hinge 8 and on horizontally rotate and cut with scissors 16, falsework 9 is positioned at the direction across bridge position before making, park in place with fortune beam ship 13 transportation boundary pier 6 pier top steel box girder beam sections 10 in boundary pier 6 middle of the river sides, the end face absolute altitude that surpasses back falsework 15 with amplitude variation type bridge floor loop wheel machine 3 lifting boundary pier 6 pier top steel box girder beam sections 10 until its bottom surface absolute altitude, rotate horizontally rotate down hinge 8 and on horizontally rotate and cut with scissors 16, falsework 9 is positioned at the direction across bridge position before making, with amplitude variation type bridge floor loop wheel machine 3 downward luffings, pier 6 pier top steel box girder beam sections 10 in boundary are positioned on preceding falsework 9 and the back falsework 15, draw mobile boundary pier 6 pier top steel box girder beam sections 10 and to the falsework 15 of back, reach boundary Dun6Dun top, the middle of the river side fore-end of falsework 9 before removing, the lifting that is close to the steel case beam beam section 11 of boundary pier 6 for middle of the river side provides enough operating spaces, be close to the steel case beam beam section 11 of boundary pier 6 and park in place with fortune beam ship 13 transportation middle of the river sides, be close to the steel case beam beam section 11 of boundary pier 6 and finish installation and the extension rope with amplitude variation type bridge floor loop wheel machine 3 lifting middle of the river sides, amplitude variation type bridge floor loop wheel machine 3 is run on the steel case beam beam section 11 of side next-door neighbour boundary, middle of the river pier 6, lifting is placed on the falsework 15 of back and the boundary pier 6 pier top steel box girder beam sections 10 on boundary Dun6Dun top, finishes being connected of 11 of steel case beam beam sections that boundary pier 6 pier top steel box girder beam sections 10 and middle of the river side are close to boundary pier 6.
Embodiment 2:
Shown in Fig. 1～13, large-span steel box girder stayed-cable bridge end bay beam section of the present invention does not have the method for putting the boom support construction, except that construction sequence (1) is auxiliary pier 1 pier top steel box girder beam section 4 pushing tows to be moved on the small-sized falsework 2 and auxiliary pier 1 Dun Ding place, construction sequence (5) are that pushing tow moves boundary pier 6 pier top steel box girder beam sections 10 to the falsework 15 of back and boundary Dun6Dun pushes up, all the other are all identical with embodiment 1.
Embodiment 3: large-span steel box girder stayed-cable bridge end bay beam section of the present invention does not have the method for putting the boom support construction, remove construction sequence (5) and be rotate horizontally rotate down hinge 8 and on horizontally rotate hinge 16 and make preceding falsework 9 be positioned at the direction across bridge position, for the lifting of the steel case beam beam section 11 of middle of the river side next-door neighbour boundary pier 6 provides outside the enough operating space, all the other are all identical with embodiment 1.
Embodiment 4: large-span steel box girder stayed-cable bridge end bay beam section of the present invention does not have the method for putting the boom support construction, remove construction sequence (5) and be rotate horizontally rotate down hinge 8 and on horizontally rotate hinge 16 and make preceding falsework 9 be positioned at the direction across bridge position, for the lifting of the steel case beam beam section 11 of middle of the river side next-door neighbour boundary pier 6 provides outside the enough operating space, all the other are all identical with embodiment 2.
Claims (4)
1. a large-span steel box girder stayed-cable bridge end bay beam section does not have the method for putting the boom support construction, it is characterized in that its construction sequence is as follows:
1. set up small-sized falsework (2) at auxiliary pier (1) Dun Ding, lifting auxiliary pier (1) pier top steel box girder beam section (4) also places small-sized falsework (2) to go up and auxiliary pier (1) Dun Ding place,
2. remove the middle of the river side part (14) of small-sized falsework (2), the steel case beam beam section (5) of lifting middle of the river side next-door neighbour's auxiliary pier (1) is also finished and installed and hang rope, and is 3. that auxiliary pier (1) pier top steel box girder beam section (4) is in place and finish corresponding connection and installation,
4. finish the lifting construction of the end bay standard steel case beam beam section (7) between auxiliary pier (1) and boundary pier (6),
5. set up forward and backward falsework (9,15) at boundary pier (6) Dun Ding, finish the lifting construction of the steel case beam beam section (11) of boundary pier (6) pier top steel box girder beam section (10) and middle of the river side next-door neighbour's boundary pier (6),
5. construction sequence is behind the lifting construction of finishing end bay standard steel case beam beam section (7), before boundary pier (6) Dun Ding sets up, back falsework (9,15), before falsework (9) support the rear end and afterwards the front end of falsework (15) use and horizontally rotate hinge (16) and be connected, bottom the diagonal brace of preceding falsework (9), set and horizontally rotate hinge (8), rotate and to horizontally rotate hinge (8) down and reach and horizontally rotate hinge (16), make preceding falsework (9) be positioned at the direction across bridge position, park in place with fortune beam ship (13) transportation boundary pier (6) pier top steel box girder beam section (10) in boundary pier (6) middle of the river side, the end face absolute altitude that surpasses back falsework (15) with amplitude variation type bridge floor loop wheel machine (3) lifting boundary pier (6) pier top steel box girder beam section (10) until its bottom surface absolute altitude, rotate and to horizontally rotate hinge (8) down and reach and horizontally rotate hinge (16), preceding falsework (9) is positioned at along bridge to the position, with the downward luffing of amplitude variation type bridge floor loop wheel machine (3), boundary pier (6) pier top steel box girder beam section (10) is positioned on preceding falsework (9) and the back falsework (15), traction or pushing tow move boundary pier (6) pier top steel box girder beam section (10) to back falsework (15) and go up and boundary pier (6) Dun Ding, falsework (9) middle of the river side fore-end or rotate horizontally rotates hinge (8) down and reaches and horizontally rotate hinge (16) and make preceding falsework (9) be positioned at the direction across bridge position before removing, be close to the steel case beam beam section (11) of boundary pier (6) and park in place with fortune beam ship (13) transportation middle of the river side, be close to the steel case beam beam section (11) of boundary pier (6) and finish installation and the extension rope with amplitude variation type bridge floor loop wheel machine (3) lifting middle of the river side, amplitude variation type bridge floor loop wheel machine (3) is run on the steel case beam beam section (11) of middle of the river side next-door neighbour's boundary pier (6), lifting is placed on that back falsework (15) is gone up and boundary pier (6) the pier top steel box girder beam section (10) of boundary pier (6) Dun Ding, finishes being connected between the steel case beam beam section (11) that boundary pier (6) pier top steel box girder beam section (10) and middle of the river side be close to boundary pier (6).
2. large-span steel box girder stayed-cable bridge end bay beam section according to claim 1 does not have the method for putting the boom support construction, it is characterized in that 1. construction sequence is behind the lifting construction of finishing Sarasota bank side standard steel case beam beam section (12), Dun Ding sets up small-sized falsework (2) at auxiliary pier (1), park in place with fortune beam ship (13) transportation auxiliary pier (1) pier top steel box girder beam section (4) to auxiliary pier (1) middle of the river side, with amplitude variation type bridge floor loop wheel machine (3) upwards luffing lifting auxiliary pier (1) pier top steel box girder beam section (4) surpass small-sized falsework (2) end face absolute altitude until its bottom surface absolute altitude, the downward luffing of amplitude variation type bridge floor loop wheel machine (3) is positioned over auxiliary pier (1) pier top steel box girder beam section (4) on the small-sized falsework (2), auxiliary pier (1) pier top steel box girder beam section (4) traction or pushing tow are moved to last and auxiliary pier (1) the Dun Ding place of small-sized falsework (2).
3. large-span steel box girder stayed-cable bridge end bay beam section according to claim 1 does not have the method for putting the boom support construction, it is characterized in that 2. construction sequence is to move to after small-sized falsework (2) is gone up and auxiliary pier (1) Dun Ding puts in place in auxiliary pier (1) pier top steel box girder beam section (4), remove the middle of the river side part (14) of small-sized falsework (2), steel case beam beam section (5) to auxiliary pier (1) middle of the river side with fortune beam ship (13) transportation middle of the river side next-door neighbour's auxiliary pier (1) is parked in place, adjust the angle of amplitude variation type bridge floor loop wheel machine (3) mast, the steel case beam beam section (5) of lifting middle of the river side next-door neighbour's auxiliary pier (1) is also finished and being connected and hanging rope of Sarasota bank side standard steel case beam beam section (12).
4. large-span steel box girder stayed-cable bridge end bay beam section according to claim 1 does not have the method for putting the boom support construction, it is characterized in that 3. construction sequence is after the installation and extension rope of the steel case beam beam section (5) of finishing middle of the river side next-door neighbour's auxiliary pier (1), amplitude variation type bridge floor loop wheel machine (3) is run on the steel case beam beam section (5) of middle of the river side next-door neighbour's auxiliary pier (1), adjust the angle of amplitude variation type bridge floor loop wheel machine (3) mast, lifting is placed on that small-sized falsework (2) is gone up and auxiliary pier (1) the pier top steel box girder beam section (4) at auxiliary pier (1) Dun Ding place and finishing being connected between the steel case beam beam section (5) that auxiliary pier (1) pier top steel box girder beam section (4) and middle of the river side be close to auxiliary pier (1).
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| CN200910058765XA CN101509229B (en) | 2009-03-31 | 2009-03-31 | Shelf beam support -free construction method for edge span beam section of large-span steel case beam stayed-cable bridge |
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| CN200910058765XA CN101509229B (en) | 2009-03-31 | 2009-03-31 | Shelf beam support -free construction method for edge span beam section of large-span steel case beam stayed-cable bridge |
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