CN113818356A - Cable-stayed bridge tower area steel plate beam and bridge deck installation method - Google Patents
Cable-stayed bridge tower area steel plate beam and bridge deck installation method Download PDFInfo
- Publication number
- CN113818356A CN113818356A CN202111242609.6A CN202111242609A CN113818356A CN 113818356 A CN113818356 A CN 113818356A CN 202111242609 A CN202111242609 A CN 202111242609A CN 113818356 A CN113818356 A CN 113818356A
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- steel beam
- installing
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- bridge deck
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 96
- 239000010959 steel Substances 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000009434 installation Methods 0.000 title abstract description 17
- 238000010276 construction Methods 0.000 claims abstract description 34
- 239000004567 concrete Substances 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 5
- 239000011374 ultra-high-performance concrete Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
-
- 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
- E01D11/04—Cable-stayed bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
Abstract
The invention discloses a method for installing a steel plate girder and a bridge deck in a tower area of a cable-stayed bridge, belonging to the technical field of bridge construction, and the method for installing the steel plate girder and the bridge deck in the tower area of the cable-stayed bridge comprises the following steps: step 1, installing a sliding track on a construction support in a tower area of a cable-stayed bridge, wherein the sliding track is used for guiding the sliding of a steel beam rod piece; step 2, hoisting a steel beam rod piece to a first area on the sliding track, and dragging the steel beam rod piece in the first area out of the first area by using a dragging device; step 3, hoisting the next steel beam rod piece to the first area of the sliding track, and connecting the adjacent steel beam rod pieces with each other; step 4, dragging the mutually connected steel beam rods out of the first area by using a dragging device, and installing a hoisting bridge deck between the adjacent steel beam rods; and 5, repeating the step 3 and the step 4 until all the steel beam rods and the bridge deck are installed at the preset positions. The alternate installation of the steel beam rod and the bridge deck is realized, and the construction cost is reduced.
Description
Technical Field
The invention belongs to the technical field of bridge construction, and particularly relates to a method for installing a steel plate beam and a bridge deck in a tower area of a cable-stayed bridge.
Background
The cable-stayed bridge is a bridge with a bridge deck system which is bent and pressed and a support system which is pulled, is a combined system structure consisting of a beam, a tower and a cable, and has the characteristics of large span, beautiful shape and the like.
At present, the construction technology of cable-stayed bridges at home and abroad is very mature, the whole sections or rods of steel beams are generally hoisted to designated positions by large-scale tower cranes for assembly in a tower area, and then the bridge decks are installed in place.
However, the construction site of the grand bridge with the main piers on the gorge hillside is narrow, the steel beams cannot be assembled into a whole section to be hoisted in the construction site near the main piers, and if a large tower crane is adopted to hoist the members or the bridge deck in place, the equipment investment cost is high.
Disclosure of Invention
The invention aims to provide a method for installing a steel plate girder and a bridge deck in a tower area of a cable-stayed bridge, which is used for reducing the investment cost required by equipment.
In order to achieve the above purpose, the invention provides the following technical scheme:
a method for installing a steel plate girder and a bridge deck in a tower area of a cable-stayed bridge comprises the following steps:
and 5, repeating the step 3 and the step 4 until all the steel beam rods and the bridge deck are installed at the preset positions.
In step 1, the sliding track is arranged at the bottom of a steel beam rod, and the steel beam rod consists of a plurality of steel beam rod pieces.
The sliding surface of the sliding rail is an MGE plate.
And 3, splicing adjacent steel beam rods through high-strength bolts.
And the steel beam rod piece is hoisted by a wall attachment crane.
The dragging device is fixed on the sliding track.
The step 5 is followed by:
and 6, pouring the joints of the bridge deck slab by using concrete.
The concrete is coarse aggregate reactive powder concrete.
step a, pre-burying bracket pendants during pier column construction;
b, assembling two triangular supports on the back field;
c, respectively installing one triangular support at two sides of the pier stud, and installing a parallel connection between the construction support and the pier stud;
and d, connecting the tops of the triangular supports on the two sides by adopting the fine-pitch deformed steel bars to form an integrated structure, wherein the fine-pitch deformed steel bars and the two triangular supports form the construction support, and a dragging device is arranged on the construction support.
The triangular support is of a triangular truss structure.
Compared with the prior art, in the method for installing the steel plate girder and the bridge deck in the tower area of the cable-stayed bridge, the steel beam members and the bridge deck are alternately installed by transporting the steel beam members and the bridge deck to the construction support in the tower area of the cable-stayed bridge in a grading manner, so that the construction cost is prevented from being increased by using a large tower crane.
Drawings
FIG. 1 is a first installation schematic diagram of a method for installing a steel plate girder and a bridge deck in a tower area of a cable-stayed bridge according to the present invention;
FIG. 2 is a further installation schematic of FIG. 1;
FIG. 3 is a further installation schematic of FIG. 2;
FIG. 4 is a further installation schematic of FIG. 3;
FIG. 5 is a further installation schematic of FIG. 4;
FIG. 6 is a further installation schematic of FIG. 5;
FIG. 7 is a further installation schematic of FIG. 6;
FIG. 8 is a further installation schematic of FIG. 7;
FIG. 9 is a further installation schematic of FIG. 8;
fig. 10 is an enlarged view of fig. 1 at a.
Reference numerals: 1. a sliding track; 11. a first counter-force seat; 12. a second counter-force seat; 2. a steel beam member; 3. a main pier; 4. constructing a support; 5. a first region; 6. a pulling device.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
Referring to fig. 1 to 10, there are shown schematic installation diagrams of the method for installing the steel plate girder and the bridge deck in the tower area of the cable-stayed bridge according to the present invention. The method for installing the steel plate girder and the bridge deck in the tower area of the cable-stayed bridge comprises the following steps:
And 3, hoisting the next steel beam rod piece 2 to the first area 5 of the sliding track 1, and connecting the adjacent steel beam rod pieces 2 with each other, wherein the adjacent steel beam rod pieces 2 are spliced through high-strength bolts.
and 5, repeating the step 3 and the step 4 until all the steel beam rods 2 and the bridge deck are installed at preset positions.
The following description will be made of an assembly example of five steel beam members 2, each of which is composed of LZ1, LZ0, L0, LB0 and LB 1.
The method comprises the following steps: as shown in fig. 1, a first-segment (LZ1) steel plate beam rod is hoisted by using a wall attachment crane, after splicing is completed by using high bolts, a corresponding bridge deck is hoisted, and finally a connecting and dragging device is installed.
Step two: as shown in fig. 2, the first segment is pulled using a pulling device to reserve a position sufficient to assemble the second segment;
step three: as shown in fig. 3, a second segment (LZ0) steel plate beam rod is hoisted by using a wall attachment crane, and after splicing is completed by using a high bolt, a corresponding bridge deck is hoisted;
step four: as shown in fig. 4, the first two segments are pulled using a pulling device to reserve a position sufficient to assemble the third segment;
step five: as shown in fig. 5, a wall-attached crane is used for hoisting a third section (L0) steel plate beam 5, and after splicing by adopting high bolts, corresponding bridge decks are hoisted;
step six: as shown in fig. 6, the first three segments are pulled using a pulling device to reserve a position sufficient to assemble the fourth segment;
step seven: as shown in fig. 7, a fourth segment (LB0) steel plate beam rod is hoisted by using a wall attachment crane, and after splicing by using high bolts, the corresponding bridge deck is hoisted;
step eight: as shown in fig. 8, the first four segments are pulled using a pulling device to reserve a position sufficient to assemble the fifth segment;
step nine: as shown in fig. 9, a fifth segment (LB1) steel plate beam rod is hoisted by using a wall attachment crane, and after splicing by using high bolts, the corresponding bridge deck is hoisted;
step ten: and pouring a UHPC wet joint, and after the strength meets the requirement, tensioning the first stay cable to complete the installation of the steel plate girder and the bridge deck in the tower area. UHPC is coarse aggregate active powder concrete.
In summary, in the method for installing the steel plate girder and the bridge deck in the tower area of the cable-stayed bridge provided by the invention, the steel beam members and the bridge deck are transported to the construction support in the tower area of the cable-stayed bridge in a grading manner, the steel beam members and the bridge deck complete the assembly of the members on the construction support, and the members are dragged to the designed position section by using the dragging device, so that the alternate installation of the steel beam members and the bridge deck is realized, and the increase of construction cost due to the use of a large tower crane is avoided.
Further, in another embodiment of the method for installing a steel plate girder and a bridge deck in a tower area of a cable-stayed bridge according to the present invention, after the step 5, the method further includes: and 6, pouring the joints of the bridge deck slab by using concrete.
In the above steps, the installation of the bridge deck is completed after concrete is poured into the joints of the bridge deck, and the concrete can be coarse aggregate reactive powder concrete (UHPC).
Finally, coarse aggregate reactive powder concrete can be used for pouring the bottom plate bolt and the auxiliary structure at the beam of the main pier 3 to complete final construction.
Further, in another embodiment of the method for installing a steel plate girder and a bridge deck in a tower area of a cable-stayed bridge according to the present invention, before the step 1, the method further includes:
step a, pre-burying bracket pendants during pier column construction;
b, assembling two triangular supports on the back field;
c, respectively installing one triangular support at two sides of the pier stud, and installing a parallel connection between the construction support and the pier stud;
and d, connecting the tops of the triangular supports on the two sides by adopting the fine-pitch deformed steel bars to form an integrated structure, wherein the fine-pitch deformed steel bars and the two triangular supports form the construction support, and a dragging device is arranged on the construction support.
In the above embodiment, the bracket hanger is specifically a beam support, the beam support is an overhanging structure on the side surface of the column, and the cantilever end and the beam hanging end have local structures, so as to meet the requirement of bearing force. The beam support is used for connecting the cantilever beam and the hanging beam and transferring load from the hanging beam.
The triangular support is supported by the beam support. The top of the triangular supports on two sides are connected by the fine-rolled deformed steel bar to form an integrated structure, so that the tops of the triangular supports on two sides can be mutually offset when being pulled, and the overall stability of the construction support is ensured.
The construction support is of a triangular truss structure.
Through mutual installation of the bracket hanging piece and the construction support, stable support of later construction is ensured.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The meaning of "a number" is one or more unless specifically limited otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A method for installing a steel plate girder and a bridge deck in a tower area of a cable-stayed bridge is characterized by comprising the following steps:
step 1, installing a sliding track on a construction support in a tower area of a cable-stayed bridge, wherein the sliding track is used for guiding the sliding of a steel beam rod piece;
step 2, hoisting a steel beam rod piece to a first area on the sliding track, and dragging the steel beam rod piece in the first area out of the first area by using a dragging device;
step 3, hoisting the next steel beam rod piece to the first area of the sliding track, and connecting the adjacent steel beam rod pieces with each other;
step 4, hoisting the bridge deck to be installed between the adjacent steel beam rods, and dragging the mutually connected steel beam rods out of the first area by using a dragging device;
and 5, repeating the step 3 and the step 4 until all the steel beam rods and the bridge deck are installed at the preset positions.
2. The method for installing the steel plate girder and the bridge deck slab in the tower area of the cable-stayed bridge according to claim 1, wherein the sliding rails are arranged at the bottom of a steel beam rod in step 1, and the steel beam rod is composed of a plurality of steel beam rod members.
3. The method for installing a steel plate girder and a bridge deck slab in a tower area of a cable-stayed bridge according to claim 1, wherein the sliding surface of the sliding rail is an MGE plate.
4. The method for installing the steel plate girder and the bridge deck slab in the tower area of the cable-stayed bridge according to claim 1, wherein in the step 3, the adjacent steel beam members are spliced through high-strength bolts.
5. The method for installing the steel plate girder and the bridge deck slab in the tower area of the cable-stayed bridge according to claim 1, wherein the steel beam rod is hoisted by a wall attachment crane.
6. The method for installing the steel plate girder and the bridge deck slab in the tower area of the cable-stayed bridge according to claim 1, wherein the towing device is fixed on the sliding track.
7. The method for installing the steel plate girder and the bridge deck slab in the tower area of the cable-stayed bridge according to claim 1, wherein the step 5 is followed by the steps of:
and 6, pouring the joints of the bridge deck slab by using concrete.
8. The method for installing a steel plate girder and a bridge deck slab in a tower area of a cable-stayed bridge according to claim 7, wherein the concrete is coarse aggregate reactive powder concrete.
9. The method for installing the steel plate girder and the bridge deck slab in the tower area of the cable-stayed bridge according to claim 1, wherein the method further comprises the following steps before the step 1:
step a, pre-burying bracket pendants during pier column construction;
b, assembling two triangular supports on the back field;
c, respectively installing one triangular support at two sides of the pier stud, and installing a parallel connection between the construction support and the pier stud;
and d, connecting the tops of the triangular supports on the two sides by adopting the fine-pitch deformed steel bars to form an integrated structure, wherein the fine-pitch deformed steel bars and the two triangular supports form the construction support, and a dragging device is arranged on the construction support.
10. The method for installing a steel plate girder and a bridge deck slab in a tower area of a cable-stayed bridge according to claim 1, wherein the triangular bracket has a triangular truss structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111242609.6A CN113818356A (en) | 2021-10-25 | 2021-10-25 | Cable-stayed bridge tower area steel plate beam and bridge deck installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111242609.6A CN113818356A (en) | 2021-10-25 | 2021-10-25 | Cable-stayed bridge tower area steel plate beam and bridge deck installation method |
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| Publication Number | Publication Date |
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| CN113818356A true CN113818356A (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111242609.6A Pending CN113818356A (en) | 2021-10-25 | 2021-10-25 | Cable-stayed bridge tower area steel plate beam and bridge deck installation method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100775053B1 (en) * | 2007-04-23 | 2007-11-08 | 매일종합건설(주) | The original seat concrete ballast method of construction and its structure for which existence steel girder was utilized |
| CN101210415A (en) * | 2007-12-20 | 2008-07-02 | 中铁大桥局股份有限公司 | Method for mounting bridge main tower cross beam top steel box girder segment |
| KR20090000443A (en) * | 2007-06-28 | 2009-01-07 | 대림산업 주식회사 | Pulley block passing-device for pws cable installation in suspension bridges |
| CN102535343A (en) * | 2012-02-02 | 2012-07-04 | 中铁大桥局股份有限公司 | Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge |
| CN112342928A (en) * | 2020-11-20 | 2021-02-09 | 中铁九桥工程有限公司 | Method for installing cable-stayed bridge of ultrahigh main tower in mountainous area |
-
2021
- 2021-10-25 CN CN202111242609.6A patent/CN113818356A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100775053B1 (en) * | 2007-04-23 | 2007-11-08 | 매일종합건설(주) | The original seat concrete ballast method of construction and its structure for which existence steel girder was utilized |
| KR20090000443A (en) * | 2007-06-28 | 2009-01-07 | 대림산업 주식회사 | Pulley block passing-device for pws cable installation in suspension bridges |
| CN101210415A (en) * | 2007-12-20 | 2008-07-02 | 中铁大桥局股份有限公司 | Method for mounting bridge main tower cross beam top steel box girder segment |
| CN102535343A (en) * | 2012-02-02 | 2012-07-04 | 中铁大桥局股份有限公司 | Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge |
| CN112342928A (en) * | 2020-11-20 | 2021-02-09 | 中铁九桥工程有限公司 | Method for installing cable-stayed bridge of ultrahigh main tower in mountainous area |
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Application publication date: 20211221 |