CN110792040B - Hoisting method for hoisting T-shaped beam of separated bridge deck - Google Patents
Hoisting method for hoisting T-shaped beam of separated bridge deck Download PDFInfo
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- CN110792040B CN110792040B CN201911028522.1A CN201911028522A CN110792040B CN 110792040 B CN110792040 B CN 110792040B CN 201911028522 A CN201911028522 A CN 201911028522A CN 110792040 B CN110792040 B CN 110792040B
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- bridge
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- girder erection
- erection machine
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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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
Abstract
The invention discloses a transverse moving truss and a hoisting method for hoisting a T beam of a separate bridge deck slab, wherein the transverse moving truss comprises a first transverse moving device and a second transverse moving device, the first transverse moving device comprises two I-shaped first bottom beams which are arranged in parallel, and a plurality of first bearing beams are fixed between the first bottom beams; a first bridge girder erection machine track is arranged on the first bearing beam; an end stopper is further arranged at one end of the first bridge girder erection machine track; the second transverse moving device comprises two I-shaped second bottom beams which are arranged in parallel, and a plurality of second bearing beams are fixed between the second bottom beams; a second bridge girder erection machine track is arranged on the upper surface of each second bottom beam; an end stopper is further arranged at one end of the second bridge girder erection machine track; the rapid hoisting of the separated bridge deck T beam is completed under the condition of a single bridge girder erection machine through the steps of hoisting, datum point elevation measurement, transverse moving and the like, and the transverse moving amplitude of the bridge girder erection machine is rapidly and conveniently changed.
Description
Technical Field
The invention relates to the field of bridge engineering construction devices, in particular to a hoisting method for hoisting a T-shaped beam of a separate bridge deck.
Background
In the construction process of the highway, due to terrain limitation, a separation type bridge deck is often designed to separate the highway into an up-down lane and a down-down lane, and a distance is reserved between the two bridge decks. Therefore, the T-shaped beam is inconvenient to hoist.
At present, the projects at home and abroad generally adopt two methods:
case of only one bridge girder erection machine: A. and firstly carrying out single-width T-beam hoisting construction, and withdrawing the bridge girder erection machine after the construction is finished to carry out second-width T-beam bridging construction. The method wastes a large amount of time by hoisting the next span T beam from the concrete panel after the bridge deck reaches a certain strength due to waiting for the bridge deck concrete construction of the erected T beam and equal strength. B. Firstly, hoisting a span T beam of one bridge deck, and then returning the bridge girder erection machine to transfer to another span T beam for hoisting while the concrete construction of the span bridge deck is carried out, thereby repeating the steps. The method wastes a great deal of manpower for dismounting the front supporting leg of the bridge girder erection machine and wastes a great deal of time for transferring the empty load of the bridge girder erection machine to the other side.
Two bridge girder erection machines are available: the hoisting of the bridge deck T-beam on the two sides and the construction of the deck are simultaneously carried out, the method is quick, the time is saved, but a lot of financial resources are wasted when two bridge erecting machines are purchased, the construction cost is greatly increased, and the expected economic target cannot be achieved.
Disclosure of Invention
The invention discloses a hoisting method for hoisting a T-shaped beam of a separate bridge deck, which adopts a transverse truss, wherein the transverse truss comprises a first transverse device transversely arranged between two cover beams at the same position of two bridge decks and a second transverse device arranged on the bridge deck at the same position of the two bridge decks, the first transverse device comprises two I-shaped first bottom beams which are arranged in parallel and horizontally, and a plurality of first bearing beams vertical to the first bottom beams are fixed between the first bottom beams; the first bearing beam is tightly fixed on the lower surface of the upper flange of the first bottom beam; a first bridge girder erection machine track is arranged on the first bearing beam along the advancing direction of the first bottom beam; an end stopper is further arranged at one end of the first bridge girder erection machine track; the second transverse moving device comprises two I-shaped second bottom beams which are arranged in parallel, and a plurality of second bearing beams which are vertical to the second bottom beams are fixed between the second bottom beams; second bridge girder erection machine rails are arranged on the upper surface of the second bottom beam along the advancing direction; an end stopper is further arranged at one end of the second bridge girder erection machine track;
the hoisting method comprises the following steps:
step 1: combining a first transverse moving device and a second transverse moving device in a prefabricated site, and hoisting the first transverse moving device and the second transverse moving device in place by using hoisting equipment;
step 2: pouring a concrete platform, and after the concrete platform reaches the designed strength, simulating the construction situation to level the sleepers;
and step 3: installing and fixing a first transverse moving device and a second transverse moving device, marking a surveying and mapping reference point after the installation is finished, and performing first elevation measurement;
and 4, step 4: mounting the bridge crane, and performing second datum point elevation measurement after the bridge crane is mounted;
and 5: walking on the transverse truss by using an autonomous walking system of the support legs of the bridge girder erection machine, wherein the operation speed is carried out for three times from slow to fast, and the deformation of the reference points is respectively mapped to obtain the walking speed of the bridge girder erection machine;
step 6: under the condition of no load, a traveling system of the bridge girder erection machine is utilized to travel from the left bridge deck to the right bridge deck, and the pouring and the equal strength of the left bridge deck are simultaneously carried out;
and 7: mounting the T-beam of the right bridge deck after the bridge girder erection machine travels to the right bridge deck;
and 8: after the T-shaped beam of the right bridge deck is installed, the T-shaped beam is transferred to the left bridge deck through the cross sliding truss again, and the T-shaped beam and the beam transporting machine are connected into a whole and return to the poured left bridge deck;
and step 9: and (4) removing the transverse moving truss, and hoisting to the next span by means of a crane to continue construction.
Particularly, the first bridge girder erection machine track and the second bridge girder erection machine track are fixed by a plurality of track steel plates through fishtail clamping plates.
In particular, the length of the first bottom beam and the second bottom beam is larger than the width of the two bridge decks.
In particular, the spacing between the pedestals in step 2 is equal to the designed net spacing of the deck.
The invention has the beneficial effects that: compared with other schemes, the method is more economical and safe, has low labor intensity, is not influenced by weather, has short construction period, does not need to hoist the bridge girder erection machine, does not need to be dismounted again, solves the problem that the sliding cross beam is in place under the condition of no hoisting equipment, and realizes the quick and convenient transverse movement and amplitude variation of the bridge girder erection machine.
Drawings
FIG. 1 is a schematic view of a first traverse device.
Fig. 2 is a cross-sectional view taken along the line a-a in fig. 1.
FIG. 3 is a schematic view of a second traverse device.
FIG. 4 is a cross-sectional view of the plane B-B in FIG. 3.
Wherein, the first traverse device-1; a first bottom beam-11; a first load-bearing beam-12; a first bridge girder erection machine track-13; an end stop-14; a second traverse device-2; a second bottom beam-21; a second spandrel girder-22; a second bridge girder erection machine track-23.
Detailed Description
The invention will be further explained with reference to the drawings.
A hoisting method for hoisting a T-shaped beam of a separate bridge deck slab adopts a transverse truss, the transverse truss comprises a first transverse device 1 transversely arranged between capping beams at the same positions of two bridge decks and a second transverse device 2 arranged on the bridge deck slab at the same position of the two bridge decks, the first transverse device 1 comprises two I-shaped first bottom beams 11 which are arranged in parallel and horizontally, a plurality of first bearing beams 12 vertical to the first bottom beams 11 are fixed between the first bottom beams 11, and the first bearing beams are tightly fixed on the lower surfaces of the upper flanges of the first bottom beams so that a first bridge girder erection machine track 13 can normally support a bridge girder erection machine to walk; a first bridge girder erection machine track 13 is arranged on the first bearing beam 12 along the advancing direction of the first bottom beam 11; the first transverse moving device 1 is installed on a poured cover beam, the first bottom beam 11 is made of HEB600H section steel, the first bearing beam 12 is made of HEB300H section steel, the first bottom beam and the first bearing beam are integrally fixed through welding, and the welding distance of the HEB300H section steel is obtained through calculation according to a calculation model of Effel software; then, erecting a first bridge girder erection machine rail 13 on the upper surface of the first bearing beam 12, namely the HEB300H section steel, wherein the first bridge girder erection machine rail 13 is fixed by a fishtail clamping plate processed by a 10MM thick steel plate; an end stopper 14 is further arranged at one end of the first bridge girder erection machine track 13; the second traversing device 2 comprises two I-shaped second bottom beams 21 which are arranged in parallel, and a plurality of second bearing beams 22 which are vertical to the second bottom beams 21 are fixed between the second bottom beams 21; the upper surfaces of the second bottom beams 21 are provided with second bridge girder erection machine rails 23 along the advancing direction; an end stopper 14 is further arranged at one end of the second bridge girder erection machine track 23; the second traverse device 2 is installed on a poured bridge deck or a first bridge span abutment, the second bottom beam 21 is made of two HEB600H section steels, the second bearing beam 22 is made of an HEB300H section steel, the two sections are fixed into a whole by welding, the welding distance of the HEB300H section steel and the distance between the two second bottom beams 21 are calculated according to Effel software simulation, and the second bridge girder erection machine rail 23 is fixed on the upper surface of the second bottom beam 21 along the advancing direction by using a fishtail clamp plate 5.
The hoisting method comprises the following steps:
step 1: combining a first transverse moving device 1 and a second transverse moving device 2 in a prefabricated site, and hoisting the first transverse moving device 1 and the second transverse moving device 2 in place by using hoisting equipment;
step 2: pouring a concrete platform, and after the concrete platform reaches the designed strength, simulating the construction situation to level the sleepers;
and step 3: installing and fixing a first transverse moving device 1 and a second transverse moving device 2, marking a surveying and mapping reference point after the installation is finished, and performing first elevation measurement;
and 4, step 4: mounting the bridge crane, and performing second datum point elevation measurement after the bridge crane is mounted;
and 5: walking on the transverse truss by using an autonomous walking system of the support legs of the bridge girder erection machine, wherein the operation speed is carried out for three times from slow to fast, and the deformation of the reference points is respectively mapped to obtain the walking speed of the bridge girder erection machine;
step 6: under the condition of no load, a traveling system of the bridge girder erection machine is utilized to travel from the left bridge deck to the right bridge deck, and the pouring and the equal strength of the left bridge deck are simultaneously carried out;
and 7: mounting the T-beam of the right bridge deck after the bridge girder erection machine travels to the right bridge deck;
and 8: after the T-shaped beam of the right bridge deck is installed, the T-shaped beam is transferred to the left bridge deck through the cross sliding truss again, and the T-shaped beam and the beam transporting machine are connected into a whole and return to the poured left bridge deck;
and step 9: and (4) removing the transverse moving truss, and hoisting to the next span by means of a crane to continue construction.
The first bridge girder erection machine track 13 and the second bridge girder erection machine track 23 are fixed by a plurality of track steel plates through a fishtail clamping plate 5, and the fishtail clamping plate is processed by a steel plate with the thickness of 10 MM.
The lengths of the first bottom beam 11 and the second bottom beam 21 are greater than the widths of the two bridge decks, so that the bridge girder erection machine is continuous in the walking process, and the rigidity of the track meets the requirement; if the length of the section steel is not enough, a connecting device is additionally arranged, and the position of the interface is required to be avoided from the overhead transverse moving position.
In the whole processing process, double-side welding is guaranteed, welding seams are full, and the mounting position of the end stopper 14 is reserved on a track of the bridge girder erection machine according to the T-beam erection method so as to control the walking position of the bridge girder erection machine.
As a preferred embodiment, the spacing between the pedestals in step 2 is equal to the designed net spacing of the deck.
In actual construction, after the transverse moving truss is installed on the bridge deck slab, installation and acceptance of the T-beam support and the upper cushion stone are carried out, T-beam hoisting of the left bridge deck slab is carried out after acceptance, transverse moving of the bridge girder erection machine is carried out after T-beam hoisting of the left bridge deck slab is completed, and transverse moving is carried out at the selected optimal speed. And after moving to the right bridge deck plate, mounting the right T-shaped beam in the same order as the left bridge deck plate. And after the installation is finished, the transverse truss is transferred to the left bridge deck slab again through the transverse truss, the transverse truss and the beam transporting machine are connected into a whole and return to the left bridge deck slab which is poured, then the transverse truss is dismantled, and the transverse truss is hoisted to the next span to continue construction.
The hoisting method is successfully applied to a certain highway project of Morocco laba, has good application effect and is confirmed by supervision and owners. The method can be applied to the construction of other single or multiple bridge deck T beams and box beams. The problem that the sliding cross beam is in place under the condition of no hoisting equipment is solved, and the transverse moving amplitude of the bridge girder erection machine is rapidly and conveniently changed.
Claims (4)
1. A hoisting method for hoisting a T-shaped beam of a separate bridge deck is characterized in that a transverse truss is adopted, the transverse truss comprises a first transverse device (1) transversely arranged between two cover beams at the same position of two bridge decks and a second transverse device (2) arranged on the bridge deck at the same position of the two bridge decks, the first transverse device (1) comprises two I-shaped first bottom beams (11) which are arranged in parallel and horizontally, a plurality of first bearing beams (12) vertical to the first bottom beams (11) are fixed between the first bottom beams (11), and the first bearing beams (12) are tightly fixed on the lower surfaces of the upper flanges of the first bottom beams (11); a first bridge girder erection machine track (13) is arranged on the first bearing beam (12) along the advancing direction of the first bottom beam (11); one end of the first bridge girder erection machine track (13) is also provided with an end stopper (14); the second transverse moving device (2) comprises two I-shaped second bottom beams (21) which are arranged in parallel, and a plurality of second bearing beams (22) which are vertical to the second bottom beams (21) are fixed between the second bottom beams (21); the upper surfaces of the second bottom beams (21) are provided with second bridge girder erection machine rails (23) along the advancing direction; one end of the second bridge girder erection machine track (23) is also provided with an end stopper (14);
the hoisting method comprises the following steps:
step 1: combining a first transverse moving device (1) and a second transverse moving device (2) in a prefabricated site, and hoisting the first transverse moving device (1) and the second transverse moving device (2) in place by using hoisting equipment;
step 2: pouring a concrete platform, and after the concrete platform reaches the designed strength, simulating the construction situation to level the sleepers;
and step 3: installing and fixing a first transverse moving device (1) and a second transverse moving device (2), marking a surveying and mapping reference point after the installation is finished, and performing first elevation measurement;
and 4, step 4: mounting the bridge crane, and performing second datum point elevation measurement after the bridge crane is mounted;
and 5: walking on the transverse truss by using an autonomous walking system of the support legs of the bridge girder erection machine, wherein the operation speed is carried out for three times from slow to fast, and the deformation of the reference points is respectively mapped to obtain the walking speed of the bridge girder erection machine;
step 6: under the condition of no load, a traveling system of the bridge girder erection machine is utilized to travel from the left bridge deck to the right bridge deck, and the pouring and the equal strength of the left bridge deck are simultaneously carried out;
and 7: mounting the T-beam of the right bridge deck after the bridge girder erection machine travels to the right bridge deck;
and 8: after the T-shaped beam of the right bridge deck is installed, the T-shaped beam is transferred to the left bridge deck through the cross sliding truss again, and the T-shaped beam and the beam transporting machine are connected into a whole and return to the poured left bridge deck;
and step 9: and (4) removing the transverse moving truss, and hoisting to the next span by means of a crane to continue construction.
2. The hoisting method for hoisting the T-beam of the split bridge deck as recited in claim 1, wherein the first bridge girder erection machine rail (13) and the second bridge girder erection machine rail (23) are fixed by a plurality of rail steel plates through a fishtail clamp plate (5).
3. Hoisting method for the hoisting of a split bridge deck T-beam according to claim 1, characterized in that the length of the first bottom beam (11) and the second bottom beam (21) is greater than two deck widths.
4. The hoisting method for hoisting the T-beam of the split bridge deck as claimed in claim 1, wherein the spacing between the pedestals in step 2 is equal to the designed clear spacing of the deck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028522.1A CN110792040B (en) | 2019-10-28 | 2019-10-28 | Hoisting method for hoisting T-shaped beam of separated bridge deck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028522.1A CN110792040B (en) | 2019-10-28 | 2019-10-28 | Hoisting method for hoisting T-shaped beam of separated bridge deck |
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| Publication Number | Publication Date |
|---|---|
| CN110792040A CN110792040A (en) | 2020-02-14 |
| CN110792040B true CN110792040B (en) | 2021-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911028522.1A Active CN110792040B (en) | 2019-10-28 | 2019-10-28 | Hoisting method for hoisting T-shaped beam of separated bridge deck |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202766978U (en) * | 2012-07-13 | 2013-03-06 | 徐州徐工铁路装备有限公司 | Lateral moving track device for road bridge erection machine |
| CN204263964U (en) * | 2014-11-04 | 2015-04-15 | 中铁二十四局集团有限公司 | A kind of anti-electric waterproof board of low clearance grade separation feeding beam catenary position |
| CN109235292B (en) * | 2018-10-18 | 2020-04-07 | 石家庄铁道大学 | Railway bridge beam replacing process |
| CN109629422B (en) * | 2018-11-28 | 2021-03-23 | 中交第二航务工程局有限公司 | Novel transverse moving and amplitude-passing method of bridge girder erection machine |
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