CN104674668B - A kind of method by cable-hoisting construction girder section - Google Patents

A kind of method by cable-hoisting construction girder section Download PDF

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Publication number
CN104674668B
CN104674668B CN201510025192.6A CN201510025192A CN104674668B CN 104674668 B CN104674668 B CN 104674668B CN 201510025192 A CN201510025192 A CN 201510025192A CN 104674668 B CN104674668 B CN 104674668B
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China
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rope
main
girder section
main rope
hoisting
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CN104674668A (en
Inventor
潘东发
涂满明
胡汉舟
文武松
季跃华
李军堂
谢守杰
许佳平
周刚
代皓
段妙奇
张小川
张瑞霞
幸思佳
杜凤
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China Railway Major Bridge Engineering Group Co Ltd MBEC
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China Railway Major Bridge Engineering Group Co Ltd MBEC
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00Methods or apparatus specially adapted for erecting or assembling bridges
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01DCONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D11/00Suspension or cable-stayed bridges
    • E01D11/02Suspension bridges

Abstract

The invention discloses the method by cable-hoisting construction girder section, it is related to field of bridge construction, comprises the following steps:Set up the first main push-towing rope, second main push-towing rope and some suspension rods, using the interval interval as installing of the bottom of each suspension rod, in the first main rope, the lower section of second main rope sets hanging apparatus, girder section to be installed is transported to lifting site, the direction for adjusting girder section to be installed is vertical with installation direction, the installation for choosing a unlocked girder section to be installed is interval, hanging apparatus, which is hung, takes girder section to be installed, lifted above girder section to be installed vertical shift to bridge floor after 1~2m, run to the top for being currently installed on interval, after girder segment level to be installed is rotated by 90 °, transfer to designed elevation, by girder section to be installed with being currently installed on interval, bridge floor is fixed, section has been installed in formation.The present invention can reduce manufacturing cost, without setting girder section hoisting platform in main span, it is ensured that the normal operation in river course.

Description

A kind of method by cable-hoisting construction girder section
Technical field
The present invention relates to field of bridge construction, and in particular to a kind of method by cable-hoisting construction girder section.
Background technology
When being constructed a bridge on the water surface, because lower section is water environment, girder section is transported to the lower section for waiting to set up point usually through barge, then by deck unit erection gantry by girder vertical-lift to mount point, installed.
When suspension bridge is built in mountain area, due to the limitation of orographic condition, stiff girder can not be transported to the lower section for treating erection point, it is generally necessary to set double group rope cable cranes in the outside of main push-towing rope, hoisting platform is set between main span, first stiff girder to be installed is placed on hoisting platform, stiff girder to be installed is lifted by crane from hoisting platform by cable crane again, after being longitudinally moved to below along mounted stiff girder below design attitude, then stiff girder to be installed is connected by vertical-lift with adjacent girder segment of putting more energy into.
There is following defect in existing installation method:
(1) stiff girder hoisting platform need to be set during the suspension bridge construction of mountain area in main span, and when orographic condition is more severe, it is necessary to set large-scale steel structure platform, construction large-scale steel structure platform structure quantities is larger;Cable crane is arranged on the outside of main push-towing rope, it is necessary to set large-scale shoulder pole girder system to lift stiff girder, the constructing structure quantities of large-scale shoulder pole girder system is big, and construction cost is higher.
(2) when setting up stiff girder to be installed by double groups of cable rope loop wheel machines, the track cable of cable crane is arranged on the outside of main push-towing rope, it is necessary to which the transverse width of bridge main tower is widened, and expands the agent structure of bridge, increases manufacturing cost.
(3), it is necessary to take navigation channel when using barging girder section, the current of river course is influenceed.
The content of the invention
For defect present in prior art, it is an object of the invention to provide a kind of method by cable-hoisting construction girder section, manufacturing cost can be reduced, without setting girder section hoisting platform in main span, it is ensured that the normal operation in river course.
To achieve the above objectives, the present invention is adopted the technical scheme that:A kind of method by cable-hoisting construction girder section, comprises the following steps:
A, using existing method it is being provided with the first access bridge, setting up the first main push-towing rope, the second main push-towing rope and some suspension rods on the suspension bridge of the second access bridge, the first king-tower, bridge floor and the second king-tower is disposed between the first access bridge, the second access bridge;Using the interval interval as installing of the bottom of each suspension rod;
B, prefabricated first main rope and the second main rope, the first main rope, the second main rope are installed between the first main push-towing rope and the second main push-towing rope;
C, the lower section setting hanging apparatus in the first main rope, the second main rope, the first main rope are connected by hanging apparatus with the second main rope;First access bridge is closed at the first king-tower, the second access bridge closes on and lifting site is used as at the second king-tower;Prefabricated some girder sections to be installed, lifting site is transported to by girder section to be installed, and the direction for adjusting girder section to be installed is vertical with installation direction;
D, control hanging apparatus are run to lifting site, the installation for choosing a unlocked girder section to be installed is interval, hanging apparatus, which is hung, to be taken girder section to be installed, is lifted above girder section to be installed to bridge floor after 1~2m, it is longitudinally running to be currently installed on interval top, after girder segment level to be installed is rotated by 90 °, section has been installed in girder section to be installed by decentralization to designed elevation with being currently installed on interval fixation, formation;
E, judge it is all install interval whether girder section to be installed has been installed, if so, terminate;Otherwise step D is repeated.
In the installation interval that a unlocked girder section to be installed is chosen on the basis of above-mentioned technical proposal, described in step D, selection order is from interval to the installation positioned at both sides positioned at middle installation interval.
It is further comprising the steps of between step A and step B on the basis of above-mentioned technical proposal:The first main rope anchor ingot is set in the outside of the first access bridge, the second main rope anchor ingot is set in the outside of the second access bridge and anchor ingot is turned to;
Prefabricated hauling rope and the first hoisting rope, one end of hauling rope is connected with rack winch, and the other end is sequentially passed through after steering anchor ingot, the second king-tower, the first king-tower, is fixed with the first main rope anchor ingot;One end of first hoisting rope is connected with hoisting winding, the other end is sequentially passed through after steering anchor ingot, the second king-tower, the first king-tower, is fixed with the first main rope anchor ingot.
On the basis of above-mentioned technical proposal, in step B after prefabricated first main rope and the second main rope, the first main rope, the second main rope are installed on before the first main push-towing rope and the second main push-towing rope, it is further comprising the steps of:The first cable saddle group is set at the top of the first king-tower, the second cable saddle group is set at the top of the second king-tower, the first cable saddle group, the second cable saddle group include setting gradually the first main cable saddle, the second main cable saddle and the 3rd main cable saddle from main span to end bay direction.
On the basis of above-mentioned technical proposal, first main cable saddle includes the first support beam, and the second main cable saddle includes the second support beam, and the 3rd main cable saddle includes the 3rd support beam;Angle between the cross central line and horizontal plane of second support beam is 0.5 °~2.5 °, and the angle between the cross central line and horizontal plane of the 3rd support beam is 2 °~4 °.
On the basis of above-mentioned technical proposal, described first main rope, the second main rope are installed between the first main push-towing rope and the second main push-towing rope comprises the following steps:One end of first main rope is fixed with the first main rope anchor ingot, the other end is sequentially passed through after the first cable saddle group, the second cable saddle group, be vertically fixed on the second main rope anchor ingot;One end of second main rope is fixed with the first main rope anchor ingot, the other end is sequentially passed through after the first cable saddle group, the second cable saddle group, be vertically fixed on the second main rope anchor ingot.
On the basis of above-mentioned technical proposal, hanging apparatus is set to comprise the following steps in the lower section of the first main rope, the second main rope described in step C:The first hoisting overhead travelling crane, the second hoisting rope and the first loop wheel machine are set gradually in the bottom of the first main rope, the second hoisting overhead travelling crane, the 3rd hoisting rope and the second loop wheel machine are set gradually in the bottom of the second main rope;Rotatable shoulder pole girder system is installed in the bottom of the first loop wheel machine, the second loop wheel machine, hanging apparatus is formed.
On the basis of above-mentioned technical proposal, step D comprises the following steps:Hanging apparatus is run to lifting site, rotatable shoulder pole girder system, which is hung, takes girder section to be installed, the first hoisting overhead travelling crane, the second hoisting overhead travelling crane run and drive 1~2m above girder section to be installed vertical shift to bridge floor;
Girder section 24 to the first is installed to adjustment along vertical bridge by hauling rope interval top is installed, after girder section to be installed is rotated by 90 °, transferred by the first hoisting rope after girder section to be installed to designed elevation, girder section to be installed is fixed with corresponding suspension rod and bridge floor, section has been installed in formation.
On the basis of above-mentioned technical proposal, the distance between described first main rope and the first main push-towing rope are 8.5m, and the distance between the second main rope and the second main push-towing rope are 8.5m;The part that first main rope, the second main rope are located between the first king-tower and the second king-tower is horizontally disposed with.
Compared with prior art, the advantage of the invention is that:
(1) by the method for cable-hoisting construction girder section in the present invention, take beam to be set up from access bridge using cable crane, without setting stiff girder hoisting platform between main span, reduce the requirement to orographic condition, not only applicability is wide, and effectively reduces construction cost.
(2) by the method for cable-hoisting construction girder section in the present invention, first main rope and the second main rope are located between the first main push-towing rope and the second main push-towing rope, outside with main rope to be arranged on to main push-towing rope in the prior art, need to increase the width at the top of king-tower, or temporary support structure is set in the outside of king-tower, the agent structure of bridge is expanded, increases manufacturing cost, construction cost is higher to be compared, and can reduce the construction cost of bridge.
(3) by the method for cable-hoisting construction girder section in the present invention, including stiff girder is rotated to vertical with installation direction, section to be installed is driven to be run from the top of bridge floor by the first loop wheel machine and the second loop wheel machine interval to installing, compared with being run with section to be installed in the prior art below bridge floor, staff can preferably observe interval position to be installed, and then it is interval interior section to be installed accurately can be placed into installation, the labor intensity of staff can be reduced, shorten the engineering time, improve installation accuracy.
(4) method that title of the invention passes through cable-hoisting construction girder section, including by transport beam dolly by girder section to be installed be transported to lifting site, with girder section is transported to the lower section for treating erection point by barge in the prior art, again by deck unit erection gantry by girder vertical-lift to mount point, installed, influence the current of river course is compared, and can be avoided taking river course, be reduced construction cost.The second support beam, the 3rd support beam in the present invention are tilted, and the first main rope and the second main rope can be avoided to be collided in installation process with the first access bridge, the second access bridge, relatively safety.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment of the present invention centre suspension cord bridge;
Fig. 2 is Fig. 1 top view;
Fig. 3 is the structural representation of the first cable saddle group in the embodiment of the present invention;
Fig. 4 hangs the structural representation for taking girder section for shoulder pole girder system in the embodiment of the present invention.
In figure:1- the first main rope anchor ingots, the access bridges of 2- first, the king-towers of 3- first, the main push-towing ropes of 4- first, the main ropes of 5- first, 6- hauling ropes, 7- hanging apparatus, the hoisting ropes of 8- first, the king-towers of 9- second, the access bridges of 10- second, 11- has installed girder section, 12- suspension rods, 13- turns to anchor ingot, 14- the second main rope anchor ingots, the main ropes of 15- second, the main push-towing ropes of 16- second, the main cable saddles of 17- first, the main cable saddles of 18- second, the main cable saddles of 19- the 3rd, the hoisting overhead travelling cranes of 20- first, the hoisting overhead travelling cranes of 21- second, the hoisting ropes of 22- second, 23 the 3rd hoisting ropes, 24- girder sections to be installed, the rotatable shoulder pole girder systems of 25-.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
Shown in Figure 1, the embodiment of the present invention provides a kind of method by cable-hoisting construction girder section, comprises the following steps:
S1:It is shown in Figure 1, it is being provided with the first access bridge 2 using existing method, setting up the first main push-towing rope 4, the second main push-towing rope 16 and some suspension rods 12 on the suspension bridge of the second access bridge 10, the first king-tower 3, bridge floor and the second king-tower 9 are disposed between first access bridge 2, the second access bridge 10, using the interval interval as installing of each bottom of suspension rod 12.First main rope anchor ingot 1 is set in the outside of the first access bridge 2, the second main rope anchor ingot 14 is set in the outside of the second access bridge 10 and anchor ingot 13 is turned to.
S2:Shown in Figure 2, one end of hauling rope 6 is connected by the prefabricated hoisting rope 8 of hauling rope 6 and first with rack winch, and the other end is fixed after sequentially passing through steering anchor ingot 13, the second king-tower 9, the first king-tower 3 with the first main rope anchor ingot 1;One end of first hoisting rope 8 is connected with hoisting winding, the other end is fixed after sequentially passing through steering anchor ingot 13, the second king-tower 9, the first king-tower 3 with the first main rope anchor ingot 1.
S3:At the top of the first king-tower 3, the first cable saddle group is set, at the top of the second king-tower 9, the second cable saddle group is set, it is shown in Figure 3, first cable saddle group, the second cable saddle group include setting gradually the first main cable saddle 17, the second main cable saddle 18 and the 3rd main cable saddle 19 from main span to end bay direction, first main cable saddle 17 includes the first support beam, second main cable saddle 18 includes the second support beam, and the 3rd main cable saddle 19 includes the 3rd support beam.
Angle between the cross central line and horizontal plane of second support beam is 0.5 °~2.5 ° (in the present embodiment, angle between the cross central line and horizontal plane of second support beam is most preferably 1.5), angle between the cross central line and horizontal plane of 3rd support beam is 2 °~4 ° (in the present embodiment, most preferably 3 ° of the angle between the cross central line and horizontal plane of the 3rd support beam).
S3:The prefabricated main rope 15 of first main rope 5 and second, one end of the first main rope 5 is fixed with the first main rope anchor ingot 1, and the other end is sequentially passed through after the first cable saddle group, the second cable saddle group, is vertically fixed on the second main rope anchor ingot 14;One end of second main rope 15 is fixed with the first main rope anchor ingot 1, the other end is sequentially passed through after the first cable saddle group, the second cable saddle group, it is vertically fixed on the second main rope anchor ingot 14, first main rope 5, the second main rope 15 are located between the first main push-towing rope 4 and the second main push-towing rope 16, and be parallel to each other, the distance between first main rope 5 and the first main push-towing rope 4 are 8.5m, and the distance between the second main rope 15 and the second main push-towing rope 16 are 8.5m.The part that first main rope 5, the second main rope 15 are located between the first king-tower 3 and the second king-tower 9 is horizontally disposed with.
S4:It is shown in Figure 4, the first hoisting overhead travelling crane 20, the second hoisting rope 22 and the first loop wheel machine are set gradually in the bottom of the first main rope 5, the second hoisting overhead travelling crane 21, the 3rd hoisting rope 23 and the second loop wheel machine are set gradually in the bottom of the second main rope 15.Rotatable shoulder pole girder system 25 is installed in the bottom of the first loop wheel machine, the second loop wheel machine, hanging apparatus 7 is formed.
Rotatable shoulder pole girder system 25 includes support frame, and support frame is internally provided with rotary shaft, and the bottom of rotary shaft is disposed with universal hinge and erecting by overhang.
S5:Prefabricated some girder sections 24 to be installed, the top of each girder section 24 to be installed is provided with the hanger for being connected with erecting by overhang, the first access bridge 2 is closed at the first king-tower 3, the second access bridge 10 closes on and lifting site is used as at the second king-tower 9.Lifting site is transported to by transporting beam dolly by girder section 24 to be installed, the placement direction of girder section 24 to be installed is vertical with installation direction.
S6:Control the operation of hanging apparatus 7 to lifting site, hung by rotatable shoulder pole girder system 25 and take girder section 24 to be installed, the first hoisting overhead travelling crane 20, the second hoisting overhead travelling crane 21 run and drive 1~2m above the vertical shift of girder section 24 to be installed to bridge floor.
S7:Install from positioned at the middle interval order interval to the installation positioned at both sides of installation, choose one and install interval, as being currently installed on interval, the first loop wheel machine of control, the operation of the second loop wheel machine drive girder section 24 to be installed to run to being currently installed on interval.Girder section 24 is installed to the top for being currently installed on interval along vertical bridge to adjustment by hauling rope 6, girder section 24 to be installed is horizontally rotated after 90 °, transferred by the first hoisting rope 8 after girder section 24 to be installed to designed elevation, section 11 has been installed into girder section 24 to be installed with being currently installed on interval fixation, formation.
S8:Judge whether all installation intervals have installed girder section 24 to be installed, if so, stopping installing;Girder section 24 to be installed is respectively mounted to all installation intervals if it is not, repeating step S6~S7.
The present invention is not limited to the above-described embodiments, for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, and these improvements and modifications are also considered as within protection scope of the present invention.The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.

Claims (9)

1. a kind of method by cable-hoisting construction girder section, it is characterised in that comprise the following steps:
A, using existing method it is being provided with the first access bridge (2), setting up the first main push-towing rope (4), the second main push-towing rope (16) and some suspension rods (12) on the suspension bridge of the second access bridge (10), the first king-tower (3), bridge floor and the second king-tower (9) is disposed between the first access bridge (2), the second access bridge (10);Using the interval interval as installing of the bottom of each suspension rod (12);
B, prefabricated first main rope (5) and the second main rope (15), the first main rope (5), the second main rope (15) are installed between the first main push-towing rope (4) and the second main push-towing rope (16);
C, the lower section setting hanging apparatus (7) in the first main rope (5), the second main rope (15), the first main rope (5) are connected by hanging apparatus (7) with the second main rope (15);First access bridge (2) is closed on the first king-tower (3) place, the second access bridge (10) close on the second king-tower (9) place be used as lifting site;Prefabricated some girder sections (24) to be installed, lifting site is transported to by girder section (24) to be installed, and the direction for adjusting girder section (24) to be installed is vertical with installation direction;
D, control hanging apparatus (7) operation to lifting site, the installation for choosing a unlocked girder section (24) to be installed is interval, hanging apparatus (7), which is hung, to be taken girder section (24) to be installed, is lifted above girder section (24) to be installed to bridge floor after 1~2m, it is longitudinally running to be currently installed on interval top, girder section (24) to be installed is horizontally rotated after 90 °, transfer to designed elevation, girder section (24) to be installed section (11) has been installed into being currently installed on interval fixation, formation;
E, judge it is all install interval whether girder section (24) to be installed has been installed, if so, terminate;Otherwise step D is repeated.
2. the method as claimed in claim 1 by cable-hoisting construction girder section, it is characterized in that, in the installation interval that a unlocked girder section (24) to be installed is chosen described in step D, selection order is from interval to the installation positioned at both sides positioned at middle installation interval.
3. the method as claimed in claim 1 by cable-hoisting construction girder section, it is characterised in that further comprising the steps of between step A and step B:The first main rope anchor ingot (1) is set in the outside of the first access bridge (2), the second main rope anchor ingot (14) is set in the outside of the second access bridge (10) and anchor ingot (13) is turned to;
Prefabricated hauling rope (6) and the first hoisting rope (8), one end of hauling rope (6) is connected with rack winch, the other end is sequentially passed through after steering anchor ingot (13), the second king-tower (9), the first king-tower (3), fixed with the first main rope anchor ingot (1);One end of first hoisting rope (8) is connected with hoisting winding, the other end is sequentially passed through after steering anchor ingot (13), the second king-tower (9), the first king-tower (3), it is fixed with the first main rope anchor ingot (1).
4. the method as claimed in claim 1 by cable-hoisting construction girder section, it is characterised in that:In step B after prefabricated first main rope (5) and the second main rope (15), first main rope (5), the second main rope (15) are installed on before the first main push-towing rope (4) and the second main push-towing rope (16), it is further comprising the steps of:At the top of the first king-tower (3), the first cable saddle group is set, second cable saddle group is set at the top of the second king-tower (9), and the first cable saddle group, the second cable saddle group include setting gradually the first main cable saddle (17), the second main cable saddle (18) and the 3rd main cable saddle (19) from main span to end bay direction.
5. the method as claimed in claim 4 by cable-hoisting construction girder section, it is characterised in that:First main cable saddle (17) includes the first support beam, and the second main cable saddle (18) includes the second support beam, and the 3rd main cable saddle (19) includes the 3rd support beam;Angle between the cross central line and horizontal plane of second support beam is 0.5 °~2.5 °, and the angle between the cross central line and horizontal plane of the 3rd support beam is 2 °~4 °.
6. the method as claimed in claim 5 by cable-hoisting construction girder section, it is characterised in that:Described first main rope (5), the second main rope (15) are installed between the first main push-towing rope (4) and the second main push-towing rope (16) comprises the following steps:One end of first main rope (5) and the first main rope anchor ingot (1) is fixed, and the other end is sequentially passed through after the first cable saddle group, the second cable saddle group, is vertically fixed on the second main rope anchor ingot (14);One end of second main rope (15) and the first main rope anchor ingot (1) is fixed, and the other end is sequentially passed through after the first cable saddle group, the second cable saddle group, is vertically fixed on the second main rope anchor ingot (14).
7. such as the method according to any one of claims 1 to 6 by cable-hoisting construction girder section, it is characterised in that:Hanging apparatus (7) is set to comprise the following steps in the lower section of the first main rope (5), the second main rope (15) described in step C:The first hoisting overhead travelling crane (20), the second hoisting rope (22) and the first loop wheel machine are set gradually in the bottom of the first main rope (5), the second hoisting overhead travelling crane (21), the 3rd hoisting rope (23) and the second loop wheel machine are set gradually in the bottom of the second main rope (15);Rotatable shoulder pole girder system (25) is installed in the bottom of the first loop wheel machine, the second loop wheel machine, hanging apparatus (7) is formed.
8. the method as described in any of claims 7 by cable-hoisting construction girder section, it is characterised in that step D comprises the following steps:By hanging apparatus (7) operation to lifting site, rotatable shoulder pole girder system (25), which is hung, takes girder section (24) to be installed, and the first hoisting overhead travelling crane (20), the second hoisting overhead travelling crane (21) run and drive 1~2m above girder section (24) vertical shift to be installed to bridge floor;
Girder section 24 to the first is installed to adjustment along vertical bridge by hauling rope (6) interval top is installed, after girder section (24) to be installed is rotated by 90 °, transferred by the first hoisting rope (8) after girder section (24) to be installed to designed elevation, girder section (24) to be installed is fixed with corresponding suspension rod (12) and bridge floor, section (11) has been installed in formation.
9. the method as described in any of claims 7 by cable-hoisting construction girder section, it is characterised in that:The distance between first main rope (5) and the first main push-towing rope (4) are 8.5m, and the distance between the second main rope (15) and the second main push-towing rope (16) are 8.5m;The part that first main rope (5), the second main rope (15) are located between the first king-tower (3) and the second king-tower (9) is horizontally disposed with.
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