CN104674668A - Method for hoisting construction girder sections through cables - Google Patents
Method for hoisting construction girder sections through cables Download PDFInfo
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- CN104674668A CN104674668A CN201510025192.6A CN201510025192A CN104674668A CN 104674668 A CN104674668 A CN 104674668A CN 201510025192 A CN201510025192 A CN 201510025192A CN 104674668 A CN104674668 A CN 104674668A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D11/00—Suspension or cable-stayed bridges
- E01D11/02—Suspension bridges
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to the field of bridge construction and discloses a method for hoisting construction girder sections through cables. The method includes the steps: erecting a first main cable, a second main cable and a plurality of booms; taking a region at the bottom of each boom to arrange a hoisting device below the first main cable and the second main cable; transporting a to-be-mounted girder section to a hoisting position, and adjusting the to-be-mounted girder section to be perpendicular to the mounting direction; selecting one mounting region with no to-be-mounted girder section, enabling the hoisting device to move above the current mounting region after longitudinally hoisting the to-be-mounted girder section to a position 1-2m above a bridge deck, horizontally rotating the to-be-mounted girder section by 90 degrees, placing the to-be-mounted girder section at a designed elevation, and fixing the to-be-mounted girder section to the current mounting region and the bridge deck to form a mounted section. By adoption of the method for hoisting construction girder sections through cables, manufacturing cost can be reduced, arrangement of a girder section hoisting platform in a main span is avoided, and normal operation of a river channel is guaranteed.
Description
Technical field
The present invention relates to field of bridge construction, be specifically related to a kind of method by cable-hoisting construction girder sections.
Background technology
The water surface when constructing a bridge, because below is water environment, to be transported to the below of waiting to set up point by girder sections usually through barge, then by deck unit erection gantry by girder vertical-lift to mounting points, install.
When suspension bridge is built in mountain area, due to the restriction of orographic condition, stiff girder cannot be transported to the below of waiting to set up point, usual needs are at the two group rope cable crane of the arranged outside of main push-towing rope, between main span, hoisting platform is set, first stiff girder to be installed is placed on hoisting platform, by cable crane, stiff girder to be installed is lifted by crane from hoisting platform again, longitudinally move to after below design attitude below mounted stiff girder, then stiff girder to be installed is connected with adjacent stiff girder sections by vertical-lift.
There is following defect in existing mounting method:
(1) need arrange stiff girder hoisting platform in main span during the suspension bridge construction of mountain area, when orographic condition is more severe, need to arrange large-scale steel structure platform, construction large-scale steel structure platform structure engineering quantity is larger; Cable crane is arranged in outside main push-towing rope, needs to arrange large-scale shoulder pole girder system lifting stiff girder, and the constructing structure engineering quantity of large-scale shoulder pole girder system is large, and construction cost is higher.
(2), when setting up stiff girder to be installed by two group cable rope loop wheel machine, the track cable of cable crane is arranged on the outside of main push-towing rope, needs the transverse width of bridge main tower to widen, and expands the agent structure of bridge, increases manufacturing cost.
(3) when adopting barging girder sections, need to take navigation channel, affect the current of river course.
Summary of the invention
For the defect existed in prior art, the object of the present invention is to provide a kind of method by cable-hoisting construction girder sections, can manufacturing cost be reduced, without the need to arranging girder sections hoisting platform in main span, ensureing the normal operation in river course.
For reaching above object, the technical scheme that the present invention takes is: a kind of method by cable-hoisting construction girder sections, comprises the following steps:
A, adopt existing method to set up the first main push-towing rope, the second main push-towing rope and some suspension rods on the suspension bridge being provided with the first access bridge, the second access bridge, between the first access bridge, the second access bridge, be disposed with the first king-tower, bridge floor and the second king-tower; Using the interval of the bottom of each suspension rod as between installing zone;
B, prefabricated first main rope and the second main rope, be installed between the first main push-towing rope and the second main push-towing rope by the first main rope, the second main rope;
C, arrange hanging apparatus in the below of the first main rope, the second main rope, the first main rope is connected with the second main rope by hanging apparatus; First access bridge is closed on the first king-tower place, the second access bridge close on the second king-tower place all as lifting site; Prefabricated some girder sections to be installed, girder sections to be installed is transported to lifting site, the direction adjusting girder sections to be installed is vertical with installation direction;
D, control hanging apparatus move to lifting site, choose between an installing zone not fixing girder sections to be installed, hanging apparatus hangs and gets girder sections to be installed, to promote above girder sections to bridge floor to be installed after 1 ~ 2m, longitudinally move to the top between current installing zone, after girder segment level half-twist to be installed, transfer to design elevation, by between girder sections to be installed and current installing zone, bridge floor fixes, formed and sections be installed;
E, judge, between all installing zones, whether girder sections to be installed has been installed, if so, terminate; Otherwise repeated execution of steps D.
On the basis of technique scheme, choosing described in step D between an installing zone not fixing girder sections to be installed, choosing order for from being positioned between middle installing zone between the installing zone being positioned at both sides.
On the basis of technique scheme, further comprising the steps of between steps A and step B: at the arranged outside first main rope anchor ingot of the first access bridge, the second access bridge arranged outside second main rope anchor ingot and turn to anchor ingot;
Prefabricated drag cable and the first hoisting rope, be connected one end of drag cable with rack winch, and the other end through after turning to anchor ingot, the second king-tower, the first king-tower, is fixed with the first main rope anchor ingot successively; Be connected with hoisting winding one end of first hoisting rope, the other end through after turning to anchor ingot, the second king-tower, the first king-tower, is fixed with the first main rope anchor ingot successively.
On the basis of technique scheme, in step B after prefabricated first main rope and the second main rope, before first main rope, the second main rope are installed on the first main push-towing rope and the second main push-towing rope, further comprising the steps of: the first cable saddle group is set at the top of the first king-tower, arrange the second cable saddle group at the top of the second king-tower, the first cable saddle group, the second cable saddle group include and set 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 technique scheme, described first main cable saddle comprises the first supporting traverse, and the second main cable saddle comprises the second supporting traverse, and the 3rd main cable saddle comprises the 3rd supporting traverse; Angle between the cross central line of the second supporting traverse and horizontal plane is 0.5 ° ~ 2.5 °, and the angle between the cross central line of the 3rd supporting traverse and horizontal plane is 2 ° ~ 4 °.
On the basis of technique scheme, described first main rope, the second main rope are installed between the first main push-towing rope and the second main push-towing rope and comprise the following steps: one end of the first main rope and the first main rope anchor ingot are fixed, the other end through after the first cable saddle group, the second cable saddle group, is vertically fixed on the second main rope anchor ingot successively; Fixed in one end of second main rope and the first main rope anchor ingot, the other end through after the first cable saddle group, the second cable saddle group, is vertically fixed on the second main rope anchor ingot successively.
On the basis of technique scheme, arrange hanging apparatus in the below of the first main rope, the second main rope described in step C to comprise the following steps: set gradually the first hoisting overhead travelling crane, the second hoisting rope and the first loop wheel machine in the bottom of the first main rope, set gradually the second hoisting overhead travelling crane, the 3rd hoisting rope and the second loop wheel machine in the bottom of the second main rope; In the bottom of the first loop wheel machine, the second loop wheel machine, rotatable shoulder pole girder system is installed, forms hanging apparatus.
On the basis of technique scheme, step D comprises the following steps: hanging apparatus is moved to lifting site, rotatable shoulder pole girder system is hung and is got girder sections to be installed, and the first hoisting overhead travelling crane, the second hoisting overhead travelling crane run and drive 1 ~ 2m above girder sections to be installed vertical shift to bridge floor;
By drag cable along vertical bridge to adjusting the top of installing between girder sections 24 to the first installing zone, after girder sections half-twist to be installed, after transferring girder sections to design elevation to be installed by the first hoisting rope, girder sections to be installed is fixed with corresponding suspension rod and bridge floor, is formed and sections is installed.
On the basis of technique scheme, the distance between described first main rope and the first main push-towing rope is 8.5m, and the distance between the second main rope and the second main push-towing rope is 8.5m; First main rope, the part of the second main rope between the first king-tower and the second king-tower are all horizontally disposed with.
Compared with prior art, the invention has the advantages that:
(1) method of cable-hoisting construction girder sections is passed through in the present invention, adopting cable crane to get beam from access bridge to set up, without the need to arranging stiff girder hoisting platform between main span, reducing the requirement to orographic condition, not only applicability is wide, and effectively reduces construction cost.
(2) method of cable-hoisting construction girder sections is passed through in the present invention, first main rope and the second main rope are between the first main push-towing rope and the second main push-towing rope, with the outside in prior art, main rope being arranged on main push-towing rope, need the width increasing king-tower top, or at the arranged outside temporary support structure of king-tower, expand the agent structure of bridge, increase manufacturing cost, construction cost is higher to be compared, and can reduce the construction cost of bridge.
(3) method of cable-hoisting construction girder sections is passed through in the present invention, comprise and stiff girder is rotated to vertical with installation direction, sections to be installed is driven to move between installing zone from the top of bridge floor by the first loop wheel machine and the second loop wheel machine, compared with running below bridge floor with sections to be installed in prior art, staff can observe the position in interval to be installed preferably, and then can sections more to be installed be placed in installing zone, the labour intensity of staff can be reduced, shorten the engineering time, improve installation accuracy.
(4) title of the present invention is by the method for cable-hoisting construction girder sections, comprise, by fortune beam dolly, girder sections to be installed is transported to lifting site, wait to set up below a little with by barge girder sections being transported in prior art, again by deck unit erection gantry by girder vertical-lift to mounting points, install, affect the current of river course to compare, can avoid taking river course, reduce construction cost.The second supporting traverse in the present invention, the 3rd supporting traverse tilt, and the first main rope and the second main rope can be avoided to collide with the first access bridge, the second access bridge in installation process, safer.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention centre suspension cord bridge;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the structural representation of the first cable saddle group in the embodiment of the present invention;
Fig. 4 is that in the embodiment of the present invention, shoulder pole girder system hangs the structural representation getting girder sections.
In figure: 1-first main rope anchor ingot, 2-first access bridge, 3-first king-tower, 4-first main push-towing rope, 5-first main rope, 6-drag cable, 7-hanging apparatus, 8-first hoisting rope, 9-second king-tower, 10-second access bridge, 11-has installed girder sections, 12-suspension rod, 13-turns to anchor ingot, 14-second main rope anchor ingot, 15-second main rope, 16-second main push-towing rope, 17-first main cable saddle, 18-second main cable saddle, 19-the 3rd main cable saddle, 20-first hoisting overhead travelling crane, 21-second hoisting overhead travelling crane, 22-second hoisting rope, 23 the 3rd hoisting ropes, 24-girder sections to be installed, the rotatable shoulder pole girder system of 25-.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
Shown in Figure 1, the embodiment of the present invention provides a kind of method by cable-hoisting construction girder sections, comprises the following steps:
S1: shown in Figure 1, existing method is adopted to set up the first main push-towing rope 4, second main push-towing rope 16 and some suspension rods 12 on the suspension bridge being provided with the first access bridge 2, second access bridge 10, the first king-tower 3, bridge floor and the second king-tower 9 is disposed with, using the interval bottom each suspension rod 12 as between installing zone between first access bridge 2, second access bridge 10.At the arranged outside first main rope anchor ingot 1 of the first access bridge 2, the second access bridge 10 arranged outside second main rope anchor ingot 14 and turn to anchor ingot 13.
S2: shown in Figure 2, prefabricated drag cable 6 and the first hoisting rope 8, be connected one end of drag cable 6 with rack winch, and the other end is fixed with the first main rope anchor ingot 1 successively after turning to anchor ingot 13, second king-tower 9, first king-tower 3; Be connected with hoisting winding one end of first hoisting rope 8, the other end is fixed with the first main rope anchor ingot 1 successively after turning to anchor ingot 13, second king-tower 9, first king-tower 3.
S3: the first cable saddle group is set at the top of the first king-tower 3, at the top of the second king-tower 9, the second cable saddle group is set, shown in Figure 3, first cable saddle group, the second cable saddle group include and set gradually the first main cable saddle 17, second main cable saddle 18 and the 3rd main cable saddle 19 from main span to end bay direction, first main cable saddle 17 comprises the first supporting traverse, second main cable saddle 18 comprises the second supporting traverse, and the 3rd main cable saddle 19 comprises the 3rd supporting traverse.
Angle between the cross central line of the second supporting traverse and horizontal plane is 0.5 ° ~ 2.5 ° (in the present embodiment, angle the best between the cross central line of the second supporting traverse and horizontal plane is 1.5), angle between the cross central line of the 3rd supporting traverse and horizontal plane is 2 ° ~ 4 ° (in the present embodiment, the angle the best between the cross central line of the 3rd supporting traverse and horizontal plane is 3 °).
S3: prefabricated first main rope 5 and the second main rope 15, fixes one end of the first main rope 5 and the first main rope anchor ingot 1, and the other end through after the first cable saddle group, the second cable saddle group, is vertically fixed on the second main rope anchor ingot 14 successively; One end of second main rope 15 and the first main rope anchor ingot 1 are fixed, the other end is successively through after the first cable saddle group, the second cable saddle group, be vertically fixed on the second main rope anchor ingot 14, first main rope 5, second main rope 15 is between the first main push-towing rope 4 and the second main push-towing rope 16, and be parallel to each other, distance between first main rope 5 and the first main push-towing rope 4 is 8.5m, and the distance between the second main rope 15 and the second main push-towing rope 16 is 8.5m.The part of the first main rope 5, second main rope 15 between the first king-tower 3 and the second king-tower 9 is all horizontally disposed with.
S4: shown in Figure 4, sets gradually the first hoisting overhead travelling crane 20, second hoisting rope 22 and the first loop wheel machine in the bottom of the first main rope 5, set gradually the second hoisting overhead travelling crane 21, the 3rd hoisting rope 23 and the second loop wheel machine in the bottom of the second main rope 15.In the bottom of the first loop wheel machine, the second loop wheel machine, rotatable shoulder pole girder system 25 is installed, forms hanging apparatus 7.
Rotatable shoulder pole girder system 25 comprises bracing frame, and the inside of bracing frame is provided with axis of rotation, and the bottom of axis of rotation is disposed with universal hinge and erecting by overhang.
S5: prefabricated some girder sections 24 to be installed, the top of each girder sections 24 to be installed is provided with the hanger for being connected with erecting by overhang, the 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 all as lifting site.By fortune beam dolly, girder sections 24 to be installed is transported to lifting site, the placement direction of girder sections 24 to be installed is vertical with installation direction.
S6: control hanging apparatus 7 and move to lifting site, hung by rotatable shoulder pole girder system 25 and get girder sections 24, first hoisting overhead travelling crane 20, second hoisting overhead travelling crane 21 to be installed and run and drive 1 ~ 2m above girder sections 24 to be installed vertical shift to bridge floor.
S7: installing from being positioned between middle installing zone to the order between the installing zone being positioned at both sides, choosing between an installing zone, as between current installing zone, controlling the first loop wheel machine, the second loop wheel machine runs, drive girder sections 24 to be installed to move between current installing zone.By drag cable 6 along vertical bridge to adjusting the top of installing between girder sections 24 to current installing zone, after girder sections 24 to be installed is horizontally rotated 90 °, after transferring girder sections 24 to design elevation to be installed by the first hoisting rope 8, by fixing between girder sections 24 to be installed and current installing zone, formed and sections 11 has been installed.
S8: judge whether installed girder sections 24 to be installed between all installing zones, if so, stops installing; If not, between repeated execution of steps S6 ~ S7 to all installing zones, girder sections 24 to be installed is all installed.
The present invention is not limited to above-mentioned embodiment, and for those skilled in the art, under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications are also considered as within protection scope of the present invention.The content be not described in detail in this manual belongs to the known prior art of professional and technical personnel in the field.
Claims (9)
1., by a method for cable-hoisting construction girder sections, it is characterized in that, comprise the following steps:
A, adopt existing method to set up the first main push-towing rope (4), the second main push-towing rope (16) and some suspension rods (12) on the suspension bridge being provided with the first access bridge (2), the second access bridge (10), between the first access bridge (2), the second access bridge (10), be disposed with the first king-tower (3), bridge floor and the second king-tower (9); Using the interval of the bottom of each suspension rod (12) as between installing zone;
B, prefabricated first main rope (5) and the second main rope (15), be installed between the first main push-towing rope (4) and the second main push-towing rope (16) by the first main rope (5), the second main rope (15);
C, arrange hanging apparatus (7) in the below of the first main rope (5), the second main rope (15), the first main rope (5) is connected with the second main rope (15) by hanging apparatus (7); 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 all as lifting site; Prefabricated some girder sections (24) to be installed, girder sections (24) to be installed is transported to lifting site, the direction adjusting girder sections (24) to be installed is vertical with installation direction;
D, control hanging apparatus (7) move to lifting site, choose between an installing zone not fixing girder sections (24) to be installed, hanging apparatus (7) hangs and gets girder sections (24) to be installed, to promote above girder sections (24) to bridge floor to be installed after 1 ~ 2m, longitudinally move to the top between current installing zone, after girder sections (24) to be installed is horizontally rotated 90 °, transfer to design elevation, by between girder sections (24) to be installed and current installing zone, bridge floor fixes, formed and sections (11) be installed;
E, judge whether girder sections (24) to be installed has been installed, if so, terminate between all installing zones; Otherwise repeated execution of steps D.
2. the method by cable-hoisting construction girder sections as claimed in claim 1, it is characterized in that, choosing described in step D between an installing zone not fixing girder sections (24) to be installed, choosing order for from being positioned between middle installing zone between the installing zone being positioned at both sides.
3. the method by cable-hoisting construction girder sections as claimed in claim 1, it is characterized in that, further comprising the steps of between steps A and step B: at arranged outside first main rope anchor ingot (1) of the first access bridge (2), the second access bridge (10) arranged outside second main rope anchor ingot (14) and turn to anchor ingot (13);
Prefabricated drag cable (6) and the first hoisting rope (8), one end of drag cable (6) is connected with rack winch, the other end, successively through after turning to anchor ingot (13), the second king-tower (9), the first king-tower (3), is fixed with the first main rope anchor ingot (1); One end of first hoisting rope (8) is connected with hoisting winding, the other end, successively through after turning to anchor ingot (13), the second king-tower (9), the first king-tower (3), is fixed with the first main rope anchor ingot (1).
4. the method by cable-hoisting construction girder sections as claimed in claim 1, it is characterized in that: in step B after prefabricated first main rope (5) and the second main rope (15), by the first main rope (5), before second main rope (15) is installed on the first main push-towing rope (4) and the second main push-towing rope (16), further comprising the steps of: 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, first cable saddle group, second cable saddle group includes and sets gradually the first main cable saddle (17) from main span to end bay direction, second main cable saddle (18) and the 3rd main cable saddle (19).
5. the method by cable-hoisting construction girder sections as claimed in claim 4, it is characterized in that: described first main cable saddle (17) comprises the first supporting traverse, second main cable saddle (18) comprises the second supporting traverse, and the 3rd main cable saddle (19) comprises the 3rd supporting traverse; Angle between the cross central line of the second supporting traverse and horizontal plane is 0.5 ° ~ 2.5 °, and the angle between the cross central line of the 3rd supporting traverse and horizontal plane is 2 ° ~ 4 °.
6. the method by cable-hoisting construction girder sections as claimed in claim 5, it is characterized 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) and comprise the following steps: one end of the first main rope (5) and the first main rope anchor ingot (1) are fixed, the other end through after the first cable saddle group, the second cable saddle group, is vertically fixed on the second main rope anchor ingot (14) successively; Fixed in one end of second main rope (15) and the first main rope anchor ingot (1), the other end through after the first cable saddle group, the second cable saddle group, is vertically fixed on the second main rope anchor ingot (14) successively.
7. the method by cable-hoisting construction girder sections according to any one of claim 1 ~ 6, it is characterized in that: described in step C, hanging apparatus (7) is set in the below of the first main rope (5), the second main rope (15) and comprises the following steps: set gradually the first hoisting overhead travelling crane (20), the second hoisting rope (22) and the first loop wheel machine in the bottom of the first main rope (5), set gradually the second hoisting overhead travelling crane (21), the 3rd hoisting rope (23) and the second loop wheel machine in the bottom of the second main rope (15); In the bottom of the first loop wheel machine, the second loop wheel machine, rotatable shoulder pole girder system (25) is installed, forms hanging apparatus (7).
8. the method by cable-hoisting construction girder sections as described in any of claims 7, it is characterized in that, step D comprises the following steps: hanging apparatus (7) is moved to lifting site, rotatable shoulder pole girder system (25) is hung and is got girder sections (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 sections (24) to be installed vertical shift to bridge floor;
By drag cable (6) along vertical bridge to adjusting the top of installing between girder sections 24 to the first installing zone, after girder sections (24) half-twist to be installed, after transferring girder sections (24) to design elevation to be installed by the first hoisting rope (8), girder sections (24) to be installed is fixed with corresponding suspension rod (12) and bridge floor, is formed and sections (11) has been installed.
9. the method by cable-hoisting construction girder sections as described in any of claims 7, it is characterized in that: the distance between described first main rope (5) and the first main push-towing rope (4) is 8.5m, and the distance between the second main rope (15) and the second main push-towing rope (16) is 8.5m; The part that first main rope (5), the second main rope (15) are positioned between the first king-tower (3) and the second king-tower (9) is all horizontally disposed with.
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| CN201510025192.6A CN104674668B (en) | 2015-01-19 | 2015-01-19 | A kind of method by cable-hoisting construction girder section |
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| CN105839537A (en) * | 2016-04-11 | 2016-08-10 | 中交第四公路工程局有限公司 | Construction method for hoisting stiffening girder of suspension bridge by adopting girdle-carrying traveling of deck erection gantry |
| CN106012841A (en) * | 2016-05-16 | 2016-10-12 | 中交路桥华南工程有限公司 | Cable crane and installation method thereof |
| CN106120535A (en) * | 2016-07-28 | 2016-11-16 | 广西大学 | Interior from anchor suspension bridge |
| CN107022958A (en) * | 2017-06-02 | 2017-08-08 | 广西路桥工程集团有限公司 | The method in cable-stayed bridge across girder is installed using cable crane |
| CN107100090A (en) * | 2017-05-23 | 2017-08-29 | 王燏斌 | A kind of Bridge Erector and its construction method for suspension bridge |
| CN108118622A (en) * | 2018-02-06 | 2018-06-05 | 中交二公局第二工程有限公司 | A kind of steel-concrete composite beam cable-stayed bridge main cable and girder construction cable crane system |
| CN109083009A (en) * | 2018-06-26 | 2018-12-25 | 四川公路桥梁建设集团有限公司 | Construction method for transferring bridge deck slab by using multi-hoisting-point cable crane in mountainous area with limited site |
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| CN109914259A (en) * | 2019-04-09 | 2019-06-21 | 中铁十八局集团第二工程有限公司 | The limited steel truss of hoisting platform encircles hanging method |
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| CN111188273A (en) * | 2019-12-31 | 2020-05-22 | 湖北省路桥集团有限公司 | Large-section steel truss girder erection system of large-span steel-concrete composite bridge and construction method |
| CN111535146A (en) * | 2020-04-30 | 2020-08-14 | 中交二公局第二工程有限公司 | Method for installing steel truss girder of suspension bridge |
| CN111977522A (en) * | 2020-08-02 | 2020-11-24 | 中交第四公路工程局有限公司 | Ground reeving and lifting installation method for cable crane crown block |
| CN112709137A (en) * | 2020-12-15 | 2021-04-27 | 中国水利水电第八工程局有限公司 | Hoisting construction method for stiffening beam of suspension bridge |
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| CN109914259A (en) * | 2019-04-09 | 2019-06-21 | 中铁十八局集团第二工程有限公司 | The limited steel truss of hoisting platform encircles hanging method |
| CN110878526A (en) * | 2019-11-07 | 2020-03-13 | 中铁大桥局集团有限公司 | Construction method for erecting stiffening beam by utilizing movable cable clamp |
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| CN111535146A (en) * | 2020-04-30 | 2020-08-14 | 中交二公局第二工程有限公司 | Method for installing steel truss girder of suspension bridge |
| CN111535146B (en) * | 2020-04-30 | 2021-11-02 | 中交二公局第二工程有限公司 | Method for installing steel truss girder of suspension bridge |
| CN111977522A (en) * | 2020-08-02 | 2020-11-24 | 中交第四公路工程局有限公司 | Ground reeving and lifting installation method for cable crane crown block |
| CN111977522B (en) * | 2020-08-02 | 2022-04-26 | 中交第四公路工程局有限公司 | Ground reeving and lifting installation method for cable crane crown block |
| CN112709137A (en) * | 2020-12-15 | 2021-04-27 | 中国水利水电第八工程局有限公司 | Hoisting construction method for stiffening beam of suspension bridge |
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