CN113863151A - Steel box tied arch bridge construction method - Google Patents
Steel box tied arch bridge construction method Download PDFInfo
- Publication number
- CN113863151A CN113863151A CN202111226882.XA CN202111226882A CN113863151A CN 113863151 A CN113863151 A CN 113863151A CN 202111226882 A CN202111226882 A CN 202111226882A CN 113863151 A CN113863151 A CN 113863151A
- Authority
- CN
- China
- Prior art keywords
- bridge
- prefabricated
- moving
- target position
- trunk line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 135
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 72
- 239000010959 steel Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 claims description 30
- 230000008569 process Effects 0.000 description 11
- 230000005484 gravity Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
-
- 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
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D4/00—Arch-type bridges
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The embodiment of the application discloses a construction method of a steel box tied arch bridge, relates to the field of railway bridge engineering, solves the problem that the construction site is limited when the bridge spans a railway bridge by pushing, saves construction cost and accelerates construction progress. The construction method of the steel box tied arch bridge comprises the following steps of firstly building an assembling platform beside a railway line, then prefabricating bridge parts on the assembling platform, and finally moving the prefabricated bridge parts to a target position of a pre-built bridge trunk line, wherein the trunk line of the pre-built bridge forms a certain included angle with the assembling platform. The construction method of the steel box tied arch bridge is used for building the steel box tied arch bridge.
Description
Technical Field
The application relates to but is not limited to the field of bridge engineering, in particular to a construction method of a steel box tied arch bridge.
Background
With the large-scale development of urban construction and the continuous improvement of traffic density networks, more and more highway bridges and railways are crossed, the construction of bridges across railways on roads must meet the requirements of rapid construction and relevant regulations of railway management departments, and in the project of crossing railways on large-span highway bridges, swivel construction and incremental launching construction are construction technologies which are widely applied.
The swivel construction is mainly suitable for T-shaped rigid frame bridges or cable-stayed bridges with larger span, and is mainly applied to construction projects with larger bridge scale. The construction method mainly aims at the research of the construction method of the steel box tied arch bridge, at present, the most widely applied construction technology of the steel box tied arch bridge at the present stage is pushing construction, the construction scheme is that after the beam body is prefabricated, a steel guide beam is installed in front of the beam body, then thrust is applied through a horizontal jack, the beam body is pushed out of a construction site in the front, and a railway under the bridge is spanned.
Although the existing pushing construction scheme can complete the construction of the steel box tied arch bridge, a plurality of fields such as assembling, pushing and the like need to be arranged along the highway, the positions of the fields cannot be selected at will, and the construction of the steel box tied arch bridge can conflict with the construction of a highway approach bridge. Therefore, the application provides a construction method of the steel box tied arch bridge.
Disclosure of Invention
The embodiment of the application provides a construction method of a steel box tied arch bridge, solves the problem that the construction site for crossing a railway bridge is limited by pushing, saves the construction cost and accelerates the construction progress.
In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:
the application provides a construction method of a steel box tied arch bridge, which comprises the following steps: firstly, building an assembly platform beside a railway line; prefabricating bridge parts on the assembling platform; finally, moving the prefabricated bridge component to a target position on a trunk line of the pre-constructed bridge; the pre-built bridge trunk line and the splicing platform form a certain included angle.
According to the construction method of the steel box tied arch bridge, the splicing platform is built beside the railway route, the trunk line of the pre-built bridge and the splicing platform form a certain included angle, the splicing platform is not located on the trunk line of the pre-built bridge, the bridge components are prefabricated on the splicing platform, and finally the prefabricated bridge components are moved to the target position of the trunk line of the pre-built bridge. Because the splicing platform is not built on the trunk line of the pre-built bridge, the normal operation of a railway is not influenced when the bridge components are prefabricated, the splicing platform can be built at any position on the railway line, the influence of the limitation of pushing a construction site by crossing the railway bridge is avoided, and meanwhile, the next bridge component is prefabricated on the splicing platform when the prefabricated bridge components are moved to the target position of the trunk line of the pre-built bridge, so that the engineering time is saved, the engineering cost is saved, and the construction progress is accelerated. Compared with the existing pushing construction scheme, the construction method of the steel box tied arch bridge provided by the embodiment of the application solves the problem that the pushing construction site for crossing the railway bridge is limited, saves the construction cost and accelerates the construction progress.
In one possible implementation of the present application, the step of moving the prefabricated bridge parts to the target position on the trunk line of the pre-constructed bridge comprises two steps, a first step: firstly, moving the prefabricated bridge part to a main line of a prefabricated bridge; the second step is that: and moving the prefabricated bridge component to a target position along the trunk line of the pre-constructed bridge, and installing and fixing the prefabricated bridge component. The prefabricated bridge parts are directly moved to the target positions of the prefabricated bridges, along with the continuous change of the target positions of the prefabricated bridges, the bridge parts are continuously changed to the target positions of the prefabricated bridges, the moving routes are changed, a plurality of moving routes need to be built, and the construction cost and the construction difficulty are increased.
In one possible implementation of the present application, the bridge component includes a main beam, and the method includes: prefabricating a main beam on the assembly platform; firstly, moving a prefabricated main beam to a main line of a pre-built bridge; and moving the prefabricated main beam to a target position along the main line of the pre-constructed bridge, and installing and fixing the main beam.
In one possible implementation of the present application, the bridge component further includes a rib, and after the step of moving the prefabricated girder to a target position along the trunk line of the pre-constructed bridge and installing and fixing, the method includes: prefabricating arch ribs on the assembly platform; firstly, moving the prefabricated arch rib to a main line of a pre-built bridge; the prefabricated arch rib is moved to a target position along the trunk line of the prefabricated bridge and is fixedly installed with the girder, if the arch rib is not prefabricated on the assembly platform, the construction is directly carried out on the installed girder, because the construction needs more fields and materials, the normal operation of a railway can be influenced, and the construction is directly carried out on the girder, a train or a high-speed rail can pass through the girder from time to time, certain safety risks are increased, meanwhile, the bearing range of the girder needs to be considered, and certain difficulty is increased for construction projects.
In a possible implementation manner of the application, in the step of prefabricating the arch rib on the assembling platform, the temporary stay bar is built on the arch rib, so that the risk of damage to the arch rib due to gravity influence is avoided.
In one possible implementation manner of the present application, after the step of moving the prefabricated arch rib with the temporary stay to the trunk line of the pre-constructed bridge, and then moving the prefabricated arch rib to the target position along the trunk line of the pre-constructed bridge and installing and fixing the prefabricated arch rib with the girder, the steel box tied arch bridge construction method further includes: the temporary stay bars on the arch ribs are dismantled, the suspender is installed on the arch ribs, the temporary stay bars can only bear the influence of the gravity of the arch ribs for a certain time, the service life is limited, after the arch ribs with the temporary stay bars and the main beam are installed and fixed, the temporary stay bars are replaced by the permanent suspender, and the main beam bears the horizontal tension of arch springing, so that system conversion is realized.
In a possible implementation manner of the application, in the step of building the assembly platform beside the railway line, the assembly platform is built along the position where the trunk line of the pre-built bridge is parallel, and the built position is selected by the assembly platform to be parallel to the trunk line of the pre-built bridge, so that the total moving line from the bridge component to the target position of the trunk line of the pre-built bridge is minimum, and the construction cost is reduced.
In one possible implementation manner of the present application, the assembly platform includes a mobile support system, and the method includes: prefabricating bridge parts on the assembly platform; and moving the prefabricated bridge component to a target position on the trunk line of the pre-constructed bridge along the moving support system. The bridge component is moved to the target position on the trunk line of the pre-built bridge, if only with the help of manpower, large labor cost is needed, and time and labor are consumed, so that the mobile support system is built on the splicing platform, the prefabricated bridge component only needs little external force, or the driving piece is arranged to drive the mobile support system, the prefabricated bridge component moves to the target position on the trunk line of the pre-built bridge along the mobile support system, and the support system is arranged to improve the construction efficiency.
In one possible implementation manner of the present application, the mobile rack system includes a transverse mobile rack system perpendicular to the trunk line of the pre-constructed bridge and a longitudinal mobile rack system coinciding with the trunk line of the pre-constructed bridge, and the transverse mobile rack system and the longitudinal mobile rack system intersect on the trunk line of the pre-constructed bridge, so that the step of moving the prefabricated bridge component to the target position on the trunk line of the pre-constructed bridge along the mobile rack system is divided into two steps, and the prefabricated bridge component is moved to the trunk line of the pre-constructed bridge along the transverse mobile rack system; and then moving the prefabricated bridge component to a target position along the trunk line of the pre-constructed bridge, installing and fixing the prefabricated bridge component, wherein the movable support system comprises a transverse movable support system perpendicular to the trunk line of the pre-constructed bridge and a longitudinal movable support system superposed with the trunk line of the pre-constructed bridge, the transverse movable support system and the longitudinal movable support system are intersected on the trunk line of the pre-constructed bridge, so that the bridge component on the assembling platform can directly reach the target position of the pre-constructed bridge along the transverse movable support system and the longitudinal movable support system, the transverse movable support system and the longitudinal movable support system are intersected on the trunk line of the pre-constructed bridge, and the bridge component on the transverse movable support system is seamlessly switched into the longitudinal movable support system, so that time and labor are saved, and the construction efficiency is improved.
In one possible implementation manner of the present application, the step of prefabricating the bridge component on the erection platform further includes: safety protection measures are arranged on the periphery of the prefabricated bridge part, and the safety protection measures are arranged, so that the bridge floor falling objects are prevented from influencing the safety of the railway in the construction process.
In one possible implementation of the present application, after the step of moving the prefabricated bridge components to a target position on a trunk line of the pre-constructed bridge, the steel box tied arch bridge construction method further includes: and (4) dismantling the assembly platform, wherein the assembly platform is dismantled after the construction is finished in order to protect the environment and avoid the generation of construction waste.
In a possible implementation manner of the application, in the step of building the assembly platforms beside the railway line, the number of the built assembly platforms is multiple, under the condition that a trunk line of the pre-built bridge is long, the number of the built assembly platforms can be multiple, and each assembly platform works simultaneously, so that the construction time is shortened, and the construction cost is reduced.
In one possible implementation of the present application, the bridge components include a first bridge component, a second bridge component, and a third bridge component, and the method includes: building an assembly platform beside a railway line; prefabricating a first bridge part on the assembling platform; moving the prefabricated first bridge component to a first target position on a trunk line of a pre-constructed bridge, and prefabricating a second bridge component on the assembling platform; moving the prefabricated second bridge component to a second target position on a trunk line of the pre-constructed bridge, and prefabricating a third bridge component on the assembling platform; the prefabricated third bridge member is moved to a third target position on the trunk line of the pre-constructed bridge, the first target position and the second target position are located on two sides of the third target position, and the assembling platform can be erected at corresponding positions parallel to the middle parts of a part of the trunk line, so that the construction time is shortened, and the construction efficiency is improved.
Drawings
FIG. 1 is a schematic view of a tied arch bridge of a steel box in an embodiment of the present application;
FIG. 2 is a schematic view of a steel box tied arch bridge construction method according to an embodiment of the present application;
FIG. 3 is a second schematic view of the construction method of the steel box tied arch bridge in the embodiment of the present application;
FIG. 4 is a third schematic view of a steel box tied arch bridge construction method in the embodiment of the application;
FIG. 5 is a fourth schematic view of the construction method of the steel box tied arch bridge in the embodiment of the present application;
FIG. 6 is a fifth schematic view of a steel box tied arch bridge construction method according to the embodiment of the present application;
FIG. 7 is a sixth schematic view of a construction method of a steel box tied arch bridge according to an embodiment of the present application;
FIG. 8 is a seventh schematic view of a steel box tied arch bridge construction method in the embodiment of the present application;
FIG. 9 is an eighth schematic view of a steel box tied arch bridge construction method according to the embodiment of the present application;
FIG. 10 is a ninth schematic view of a steel box tied arch bridge construction method according to the embodiment of the present application;
FIG. 11 is a ten-step schematic illustration of a construction method of a steel box tied arch bridge according to an embodiment of the present application;
FIG. 12 is an eleventh schematic view illustrating a method for constructing a steel box tied arch bridge according to an embodiment of the present application;
FIG. 13 is a flow chart of a construction method of a steel box tied arch bridge according to an embodiment of the present application;
FIG. 14 is a second flowchart of a method for constructing a tied arch bridge with steel boxes according to an embodiment of the present application;
FIG. 15 is a third flowchart of a construction method of a steel box tied arch bridge according to an embodiment of the present application;
FIG. 16 is a fourth flowchart of the construction method of the steel box tied arch bridge in the embodiment of the present application;
FIG. 17 is a fifth flowchart of a construction method of a steel box tied arch bridge according to an embodiment of the present application;
FIG. 18 is a sixth flowchart of a construction method of a steel box tied arch bridge according to the embodiment of the present application;
FIG. 19 is a seventh flowchart of a construction method of a steel box tied arch bridge according to the embodiment of the present application;
fig. 20 is an eighth flowchart of a construction method of a steel box tied arch bridge in the embodiment of the present application.
Reference numerals
1-a railway; 2-assembling the platform; 21-moving the gantry system; 211-laterally moving the gantry system; 212-longitudinally moving the gantry system; 3-bridge parts; 31-a first bridge component; 32-a second bridge component; 33-a third bridge component; 311-main beam; 312-ribs; 3121-temporary braces; 3122-a boom; 4-pre-constructing a trunk line of the bridge; 41-target position; 411-first target position; 412-a second target position; 413-third target position.
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, specific technical solutions of the present application will be described in further detail below with reference to the accompanying drawings in the embodiments of the present application. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.
In the embodiments of the present application, the terms "first" and "second" 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 embodiments of the present application, "a plurality" means two or more unless otherwise specified.
In addition, in the embodiments of the present application, directional terms such as "upper", "lower", "left", and "right" are defined with respect to the schematically-placed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and may be changed accordingly according to changes in the orientation in which the components are placed in the drawings.
In the embodiments of the present application, unless otherwise explicitly specified or limited, the term "connected" is to be understood broadly, for example, "connected" may be a fixed connection, a detachable connection, or an integral body; may be directly connected or indirectly connected through an intermediate.
In the embodiments of the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.
Referring to fig. 1, with the large-scale development of urban construction and the continuous improvement of traffic density networks, more and more highway bridges are crossed with railways 1, the construction of bridges across railways on roads must meet the requirements of rapid construction and relevant regulations of railway management departments, and the construction of steel box tied arch bridge structures is more and more frequent in the project of large-span highway bridges across railways.
Referring to fig. 1 and 2, the steel box tie structure comprises a bridge component 3 and a bridge pier, wherein the bridge component 3 comprises a girder 311 and arch ribs 312 for vehicle running, due to the action of gravity, the arch ribs 312 move downwards, so that a series of suspenders 3122 are mounted on the steel box tie, the suspenders 3122 are stressed by the arch ribs 312 and are also stressed by the tension generated by the gravity of the girder 311, the suspenders 3122 realize tension-compression balance, and the whole steel box tie structure realizes the balance of the forces.
The steel box tie structure is generally divided into segments according to the individual arch ribs 312, and for example, a three-segment steel box tie structure is taken as an example, and as shown in fig. 2, for convenience of description, the positions of the three segments are briefly described, in fig. 2, the left side of the trunk line is taken as a first target position 411, the bridge member 3 corresponding to the first target position 411 is referred to as a first bridge member 31, the right side of the trunk line is taken as a second target position 412, the bridge member 3 corresponding to the second target position 412 is referred to as a second bridge member 32, a third target position 413 is located between the first target position 411 and the second target position 412, a third bridge member 33 corresponding to the third target position 413 is referred to as a third bridge member 33, and the first target position 411, the second target position 412 and the third target position 413 constitute a part target position 41 on the trunk line.
As shown in fig. 3, a splicing platform 2 is built beside a railway 1, the splicing platform 2 comprises a movable support system 21, and the splicing platform 2 is used for prefabricating a bridge component 3; the prefabricated bridge parts 3 are moved along the mobile shelving system 21 to a target location 41 on the trunk line 4 of the pre-built bridge (if reference numeral 41 is not shown in the figure, the location of reference numeral 41 is the same as 4). The bridge component 3 is moved to the target position 41 on the trunk line 4 of the pre-built bridge, if only with the help of manpower, large labor cost is needed, and time and labor are consumed, so that the mobile support system 21 is built on the assembling platform 2, the prefabricated bridge component 3 only needs little external force, or a driving piece is arranged to drive the mobile support system 21, the prefabricated bridge component 3 is moved to the target position 41 on the trunk line 4 of the pre-built bridge along the mobile support system 21, and the support system is arranged to improve the construction efficiency.
Referring to fig. 4, the moving rack system 21 may include a transverse moving rack system 211 perpendicular to the trunk line 4 of the pre-constructed bridge and a longitudinal moving rack system 212 overlapped with the trunk line 4 of the pre-constructed bridge, the transverse moving rack system 211 and the longitudinal moving rack system 212 being intersected on the trunk line 4 of the pre-constructed bridge, so that the step of moving the prefabricated bridge part 3 along the moving rack system 21 to the target position 41 on the trunk line 4 of the pre-constructed bridge is divided into two steps, the prefabricated bridge part 3 is moved along the transverse moving rack system 211 to the trunk line 4 of the pre-constructed bridge; then the prefabricated bridge parts 3 are moved to the target position 41 along the main trunk line 4 of the pre-constructed bridge and are installed and fixed, the movable support system 21 comprises a transverse movable support system 211 perpendicular to the main trunk line 4 of the pre-constructed bridge and a longitudinal movable support system 212 superposed with the main trunk line 4 of the pre-constructed bridge, the transverse movable support system 211 and the longitudinal movable support system 212 are intersected on the main trunk line 4 of the pre-constructed bridge, so that the bridge parts 3 on the splicing platform 2 can directly reach the target position 41 of the pre-constructed bridge along the transverse movable support system 211 and the longitudinal movable support system 212, the transverse movable support system 211 and the longitudinal movable support system 212 are intersected on the main trunk line 4 of the pre-constructed bridge, and the bridge parts 3 on the transverse movable support system 211 enter the longitudinal movable support system 212 for seamless switching, time and labor are saved, and the construction efficiency is improved.
It should be specifically noted that the purpose of the transverse moving frame system 211 and the longitudinal moving frame system 212 is to enable the bridge component 3 to be driven to a predetermined position in a time-saving and labor-saving manner, so the transverse moving frame system 211 and the longitudinal moving frame system 212 may be in a gear transmission manner, a belt transmission manner or a chain transmission manner, and the driving device may be a motor, an air cylinder or the like, which is not limited thereto.
Referring to fig. 4, 5 and 6, the first bridge member 31 may be prefabricated on the erection platform 2, the first bridge member 31 is translated along the traverse support system 211 to the third target position 413 of the trunk line, the first bridge member 31 is then moved to the first target position 411 by the longitudinal support system 212, the transportation of the first bridge member 31 is completed by the traverse support system 211 and the longitudinal support system 212, and referring to fig. 7, 8 and 9, the second bridge member 32 is translated along the traverse support system 211 to the second target position 412 of the trunk line, the second bridge member 32 is then moved to the second target position 412 by the longitudinal support system 212, and the transportation of the second bridge member 32 is completed by the traverse support system 211 and the longitudinal support system 212 in the same manner.
As shown in fig. 10, 11 and 12, immediately after the third bridge member 33 is prefabricated on the erection platform 2, the third bridge member 33 is simply moved to the third target position 413 by the traverse moving system. The first bridge part 31, the second bridge part 32 and the third bridge part 33 all move to preset positions to finish fixed installation, one part of the steel box tied arch bridge is built, and the operation is repeated, so that the building of the steel box tied arch bridge is finished.
In particular, for a more time-saving and labor-saving movement, a pushing nose girder may be mounted on the bridge member 3. In order to solve the problem that the bridge member 3 cannot shift a slight angle during the movement of the bridge member 3 because the first target position 411, the second target position 412 and the third target position 413 on the trunk line may be seamlessly connected, the present application provides a preferred technical solution, in the same way, after the first bridge member 31 is moved to the first target position 411, the second bridge member 32 is moved to the second target position 412, the second bridge member 412 is moved to a small distance, such as 20cm, in the direction of the first target position 411, when the third bridge member 33 is moved to the third target position 413, all things are ready to be installed and fixed, the first bridge member 31 is moved to the first target position 411, the second bridge member 32 is moved to the second target position 412, and the third bridge member 33 is installed and fixed, the difficulty of construction is reduced.
In order to solve the problem that the construction site is limited in the prior art, the application provides a steel box tied arch bridge construction method, and the method refers to fig. 13 and mainly comprises the following steps:
step S1: building an assembly platform beside a railway line;
step S2: prefabricating bridge parts on the assembly platform;
step S3: moving the prefabricated bridge component to a target position on a trunk line of a pre-constructed bridge; the pre-built bridge trunk line and the splicing platform form a certain included angle.
According to the construction method of the steel box tied arch bridge, as shown in fig. 11, the assembly platform 2 is built beside the railway 1, the trunk line 4 of the pre-constructed bridge forms a certain included angle with the assembly platform 2, the assembly platform 2 is not located on the trunk line 4 of the pre-constructed bridge, the bridge component 3 is prefabricated on the assembly platform 2, and finally the prefabricated bridge component 3 is moved to the target position 41 of the trunk line 4 of the pre-constructed bridge. Because the splicing platform 2 is not built on the trunk line 4 of the pre-built bridge, the normal operation of the railway 1 is not influenced when the bridge components 3 are prefabricated, the splicing platform 2 can be built at any position on the route of the railway 1 without being influenced by the limitation of the bridge pushing construction site crossing the railway 1, and meanwhile, the next bridge component 3 is prefabricated on the splicing platform 2 when the prefabricated bridge component 3 is moved to the target position 41 of the trunk line 4 of the pre-built bridge, so that the engineering time is saved, the engineering cost is saved, and the construction progress is accelerated. Compared with the existing pushing construction scheme, the construction method of the steel box tied arch bridge provided by the embodiment of the application solves the problem that the pushing construction site for crossing the railway bridge is limited, saves the construction cost and accelerates the construction progress.
It should be added to explain that, as shown in fig. 12, a splicing platform 2 is built beside a railway 1, a trunk line of a pre-built bridge forms a certain included angle with the splicing platform 2, because of the included angle, one end of the splicing platform 2 is closer to the trunk line of the pre-built bridge, on one hand, the building of the splicing platform 2 is needed, on the other hand, preparation work such as building a pier for supporting a bridge component 3 on the trunk line 4 of the pre-built bridge is needed, and on one hand, one end of the splicing platform 2 is too close to the pre-built bridge, which causes a construction site to be too small, which is not beneficial to construction, so that the splicing platform 2 is built at a position parallel to the trunk line 4 of the pre-built bridge, so that any position on the same axis on the splicing platform 2 is the same as the position of the trunk line 4 of the pre-built bridge, and the parallel arrangement of the splicing platform 2 is also convenient for people to construct, and reduces construction cost.
In some embodiments of the application, some safety protection measures can be set at the periphery of the bridge component 3 when the bridge component 3 is prefabricated, in the construction process in the later stage, a constructor may need to perform some operations on the bridge component 3 or some construction materials may be stacked on the bridge component 3, some protection measures are set at the periphery of the bridge component 3, the constructor is prevented from falling down carelessly or in the construction process, bridge floor falling objects fall onto a running line of the railway 1, and the running risk of the railway 1 is increased.
Specifically, the safety protection measures can be bridge anti-collision fences, wood piers or anti-throwing nets, the safety protection measures can be prefabricated on the splicing platform 2 together with the bridge parts 3, and the safety protection measures can also be built on the periphery of the bridge parts 3 after the bridge parts 3 are prefabricated.
In some other embodiments of the present application, referring to fig. 14, moving the prefabricated bridge parts to the target positions on the trunk line of the pre-constructed bridge in step S3 is divided into two steps:
step S31: moving the prefabricated bridge part to a main line of a pre-constructed bridge;
step S32: and moving the prefabricated bridge parts to a target position along the trunk line of the pre-constructed bridge, and installing and fixing the prefabricated bridge parts.
As shown in fig. 12, the prefabricated bridge component 3 is directly moved to the target position 41 of the prefabricated bridge, and along with the continuous change of the target position 41 of the prefabricated bridge, the bridge component 3 is continuously changed from the target position 41 of the prefabricated bridge, and the movement route is changed, so that a plurality of movement routes need to be constructed, and the construction cost and the construction difficulty are increased, so that the construction method is divided into two steps, wherein the coaxiality of the bridge component 3 is ensured on the main line on which the prefabricated bridge component 3 is moved, and then the prefabricated bridge component 3 is moved to the target position 41, only two routes need to be constructed in the construction process, one route is a route from the splicing platform 2 to the main line 4 of the prefabricated bridge, and the other route is completed by two steps along the main line of the prefabricated bridge, so that the construction cost and the construction difficulty for constructing a plurality of routes are reduced.
Specifically, referring to fig. 12, the bridge component 3 includes the girder 31 and the rib 312, and if the bridge component 3 is moved to the target position 41 of the trunk line 4 of the pre-constructed bridge as a whole, the whole prefabrication process is large and the construction difficulty is high, so that the present application proposes a preferable technical solution, referring to fig. 15 and 16, the bridge component is prefabricated on the erection platform in step S2 as step S21: prefabricating a main beam on the assembly platform; the bridge component 3 and the arch rib 312 are prefabricated separately, so that the construction difficulty is reduced, the prefabricated girder 311 is moved to the target position 41 of the trunk line 4 of the prefabricated bridge, the prefabricated girder is divided into a step S311 and a step S321, and the girder is moved to the trunk line of the prefabricated bridge; and then moving the pre-constructed bridge along the trunk line of the pre-constructed bridge to the trunk line position of the pre-constructed bridge for installation and fixation. The construction difficulty will be low. There are two kinds of construction methods to install arch rib 312 on girder 31, one is that directly build arch rib 312 on fixed mounting's girder 311, but simple and convenient nevertheless because the place and the material that the construction needs are more, can influence the normal operation of railway 1, and directly construct on girder 31, train or high-speed railway can pass occasionally under girder 31, has increased certain safe risk, still need consider the weighing range of girder 31 simultaneously, has increased certain degree of difficulty for the construction project. The other way is to prefabricate the arch rib 312 on the existing assembly platform 2, move the arch rib 312 to the target position 41 of the main trunk of the pre-constructed bridge, and also divide the arch rib into step S312 and step S322, and move the arch rib to the main trunk of the pre-constructed bridge; and then moving the pre-constructed bridge along the trunk line of the pre-constructed bridge to the target position of the trunk line of the pre-constructed bridge and installing and fixing the girder 311. The splicing platform 2 and the movable support system 21 do not need to be built again, so that the construction cost is reduced, and the risk is reduced.
In other embodiments of the present application, referring to fig. 11 and 17, during the moving and installing process, the arch rib 312 is not uniformly stressed due to a certain radian, and the phenomenon that the arch rib 312 may be damaged due to the influence of gravity is likely to occur, step S23 should be added after the step of prefabricating the arch rib on the assembly platform in step S22 to build a temporary supporting rod on the arch rib, and build a temporary supporting rod 3121 on the arch rib 312, so that on one hand, the gravity generated by the arch rib 312 can be overcome during the moving and installing process of the arch rib 312, on the other hand, after the installation and fixation of the arch rib 312 and the main beam 311 is completed, and during the ending operation, the temporary supporting rod 3121 is subjected to both the pressure from the arch rib 312 and the pulling force from the main beam 311, so as to achieve a tension and compression balance, and temporarily replace the function of the tie rod 3122, thereby reducing the risk of damage to the arch rib 312. It should be added that, as shown in fig. 11, 12 and 18, the temporary bracing members 3121 can only temporarily replace the tie bars 3122, and the service life of the temporary bracing members 3121 is short, so that after the prefabricated arch rib with the temporary bracing members is moved to the target position along the trunk line of the pre-constructed bridge and is installed and fixed with the main girder 311 in step S322; a step S33 of removing the temporary stay bars on the arch ribs and installing the suspension rods on the arch ribs is required to be added, so that the main beam 311 and the suspension rods 3122 form a whole, the temporary stay bars 3121 are replaced with the permanent suspension rods 3122, and the main beam bears the horizontal tension of the arch springing, thereby realizing system conversion. The safety of use is improved.
Specifically, referring to fig. 11, after the temporary brace on the arch rib is removed and the boom is installed on the arch rib in step S33, a support system is installed on the girder 311 and the trunk line 4 of the pre-constructed bridge, so as to complete the construction of the steel box tied arch bridge.
It should be added that, referring to fig. 12, the assembly platforms 2 are built beside the road, the number of the assembly platforms 2 is not limited to one, and the number of the assembly platforms 2 is not limited, and a plurality of the assembly platforms can be built. If the trunk line 4 of the pre-built bridge is longer, only one assembly platform 2 is built, along with the fact that the target position 41 is farther away from the assembly platform 2, the moving distance of the bridge components 3 is farther away, the coaxiality of the bridge components 3 is not easy to guarantee, only one assembly platform 2 is built, the speed of prefabricating the bridge components 3 is slower, the construction time is prolonged, a plurality of assembly platforms 2 are built, the plurality of assembly platforms 2 are constructed simultaneously, the construction period can be shortened, and the construction cost is reduced.
In some embodiments of the present application, referring to fig. 12 and 19, in order to protect the environment and avoid the generation of construction waste, after the step S3 is completed integrally, a step S4 needs to be added to dismantle the assembly platform and try to restore the environment between the non-constructed assembly platforms 2, so that the construction waste is not degraded to some extent, and the occurrence of phenomena such as hardening of the ground is avoided.
After step S3 is completed, it is indicated that the steel box tied-arch bridge has been built, but it does not mean that the steel box tied-arch bridge can be put into operation, and various tests, such as dynamic and static load tests, need to be performed on the steel box tied-arch bridge, and the steel box tied-arch bridge can be put into operation only after all tests are qualified.
In other embodiments provided by the present application, as shown in fig. 12 and 20, the bridge component 3 is divided into a main beam 311 and an arch rib 312 according to composition, the steel box tied arch bridge construction method is divided into four steps, the bridge component 3 may also be divided into different target positions 41 according to different orientations, including a first bridge component 31, a second bridge component 32 and a third bridge component 33, and the steel box tied arch bridge construction method is divided into five steps, including:
step S1: building an assembly platform beside a railway line;
step S2: prefabricating a first bridge part on the assembling platform;
step S3: moving the prefabricated bridge component to a first target position on a trunk line of a pre-constructed bridge, and prefabricating a second bridge component on the assembling platform;
step S4: moving the prefabricated bridge component to a second target position on a trunk line of the pre-constructed bridge, and prefabricating a third bridge component on the assembling platform;
step S5: and moving the prefabricated bridge part to a third target position on the trunk line of the pre-constructed bridge.
Referring to fig. 11, in the process that the prefabricated bridge part 3 moves to the target position 41 of the trunk line 4 of the pre-constructed bridge, the next bridge part 3 is prefabricated on the splicing platform 2, and thus, the construction period is reduced, and the construction cost is reduced.
It should be added that, referring to fig. 12, the third target position 413 is located between the first target position 411 and the second target position 412, the assembly platform 2 can be set up at a position corresponding to the lateral system of the third target position 413, when the third bridge is moved, the third bridge can be moved to the third target position 413 only by the lateral movement support system 211, and the longitudinal movement support system 212 is not needed, so that the construction period is shortened.
Specifically, as shown in fig. 12, the first, second and third positions in the figure are relative to the main trunk line 4 of the pre-constructed bridge, a plurality of first, second and third target positions 413 may be divided on the main trunk line 4 of the pre-constructed bridge, and the modules may be constructed simultaneously, or the fourth and fifth target positions may be provided, which is not limited thereto.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.
Claims (13)
1. A construction method of a steel box tied arch bridge is characterized by comprising the following steps:
building an assembly platform beside a railway line;
prefabricating bridge parts on the splicing platform;
moving the prefabricated bridge component to a target position on a trunk line of the pre-constructed bridge;
the pre-built bridge trunk line and the splicing platform form a certain included angle.
2. The steel box tied arch bridge construction method according to claim 1,
the step of moving the prefabricated bridge parts to a target position on a trunk line of the pre-constructed bridge includes:
firstly, moving the prefabricated bridge part to a main line of the prefabricated bridge;
and moving the prefabricated bridge component to a target position along the trunk line of the pre-constructed bridge, and installing and fixing the bridge component.
3. The steel box tied arch bridge construction method according to claim 2,
the bridge component comprises a main beam, and the method comprises the following steps:
prefabricating the main beam on the assembling platform;
firstly, moving the prefabricated main beam to a main line of the pre-built bridge;
and moving the prefabricated main beam to a target position along the main line of the pre-constructed bridge, and installing and fixing the main beam.
4. The steel box tied arch bridge construction method according to claim 3,
the bridge component further comprises a rib, and after the step of moving the prefabricated girder to a target position along the trunk line of the pre-constructed bridge and installing and fixing, the method comprises the following steps:
prefabricating the arch rib on the splicing platform;
firstly, moving the prefabricated arch rib to a main line of the prefabricated bridge;
and moving the prefabricated arch rib to a target position along the trunk line of the pre-constructed bridge, and installing and fixing the prefabricated arch rib and the main beam.
5. The steel box tied arch bridge construction method according to claim 4, wherein in the step of prefabricating the arch rib on the erection platform, a temporary stay is built on the arch rib.
6. The steel box tied arch bridge construction method according to claim 5,
after the step of moving the prefabricated arch rib with the temporary stay bar to the main line of the pre-constructed bridge, moving the prefabricated arch rib to a target position along the main line of the pre-constructed bridge, and installing and fixing the prefabricated arch rib with the main beam, the steel box tied arch bridge construction method further comprises the following steps:
and removing the temporary support rods on the arch rib, and installing a hanging rod on the arch rib.
7. The method for constructing a tied arch bridge for steel boxes according to claim 1,
and in the step of building the assembly platform beside the railway line, the assembly platform is built at a position parallel to the trunk line of the pre-built bridge.
8. The method for constructing a tied arch bridge for steel boxes according to claim 7,
the construction platform comprises a mobile support system, and the method comprises the following steps:
prefabricating the bridge parts on the splicing platform;
and moving the prefabricated bridge part to a target position on a trunk line of the pre-constructed bridge along the moving bracket system.
9. The method for constructing a tied arch bridge for steel boxes according to claim 8,
the mobile support system comprises a transverse mobile support system perpendicular to the trunk line of the pre-constructed bridge and a longitudinal mobile support system coincident with the trunk line of the pre-constructed bridge, the transverse mobile support system and the longitudinal mobile support system are intersected on the trunk line of the pre-constructed bridge,
the step of moving the prefabricated bridge parts along the mobile gantry system to a target location on a trunk line of the pre-constructed bridge comprises:
firstly, moving the prefabricated bridge part to a main line of the prefabricated bridge along the transverse moving bracket system;
and moving the prefabricated bridge component to a target position along the trunk line of the pre-constructed bridge along the longitudinal moving support system, and installing and fixing the bridge component.
10. The method for constructing a tied arch bridge for steel boxes according to claim 9,
the step of prefabricating the bridge component on the erection platform further comprises: and arranging safety protection measures at the periphery of the prefabricated bridge component.
11. The method for constructing a tied arch bridge for steel boxes according to claim 1,
after the step of moving the prefabricated bridge components to a target position on a trunk line of the pre-constructed bridge, the steel box tied arch bridge construction method further includes:
and disassembling the splicing platform.
12. The steel box tied arch bridge construction method according to claim 11, wherein in the step of building a construction platform beside the railway line, the construction platform is built in a plurality of numbers.
13. A steel box tied arch bridge construction method according to any one of claims 1 to 12, wherein the bridge components include a first bridge component, a second bridge component and a third bridge component, the method comprising:
building the splicing platform beside the railway line;
prefabricating a first bridge component on the assembly platform;
moving the prefabricated first bridge component to a first target position on a trunk line of the pre-constructed bridge, and prefabricating a second bridge component on the splicing platform;
moving the prefabricated second bridge component to a second target position on a trunk line of the pre-constructed bridge, and prefabricating a third bridge component on the splicing platform;
moving the prefabricated third bridge member to a third target position on the trunk line of the pre-constructed bridge, with the first target position and the second target position being located on both sides of the third target position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111226882.XA CN113863151A (en) | 2021-10-21 | 2021-10-21 | Steel box tied arch bridge construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111226882.XA CN113863151A (en) | 2021-10-21 | 2021-10-21 | Steel box tied arch bridge construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113863151A true CN113863151A (en) | 2021-12-31 |
Family
ID=78996985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111226882.XA Pending CN113863151A (en) | 2021-10-21 | 2021-10-21 | Steel box tied arch bridge construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113863151A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182147A (en) * | 2011-03-31 | 2011-09-14 | 中铁港航局集团第二工程有限公司 | Steel box girder erection method |
| CN102619170A (en) * | 2012-03-20 | 2012-08-01 | 中铁四局集团钢结构有限公司 | Large-span flexible arch skew back joining construction method |
| JP2016023523A (en) * | 2014-07-24 | 2016-02-08 | 株式会社Ｉｈｉインフラシステム | Construction method for arch bridge |
| CN109252454A (en) * | 2018-09-28 | 2019-01-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of adjustable large span combined system arch bridge incremental launching construction engineering method of Construction State |
| CN112342917A (en) * | 2020-10-20 | 2021-02-09 | 上海市政工程设计研究总院（集团）有限公司 | Combined construction method for pushing beam first and then lifting arch of large-span tied arch bridge |
-
2021
- 2021-10-21 CN CN202111226882.XA patent/CN113863151A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182147A (en) * | 2011-03-31 | 2011-09-14 | 中铁港航局集团第二工程有限公司 | Steel box girder erection method |
| CN102619170A (en) * | 2012-03-20 | 2012-08-01 | 中铁四局集团钢结构有限公司 | Large-span flexible arch skew back joining construction method |
| JP2016023523A (en) * | 2014-07-24 | 2016-02-08 | 株式会社Ｉｈｉインフラシステム | Construction method for arch bridge |
| CN109252454A (en) * | 2018-09-28 | 2019-01-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of adjustable large span combined system arch bridge incremental launching construction engineering method of Construction State |
| CN112342917A (en) * | 2020-10-20 | 2021-02-09 | 上海市政工程设计研究总院（集团）有限公司 | Combined construction method for pushing beam first and then lifting arch of large-span tied arch bridge |
Non-Patent Citations (1)
| Title |
|---|
| 崔玉惠等: "122米下承式曲弦钢管混凝土桁梁的设计特点" * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102121234B (en) | Quick construction method of two-tower five-span steel truss girder cable-stayed bridge | |
| CN110499708B (en) | Bridge girder erection machine for synchronously installing prefabricated bridge Liang Duokua and installation method thereof | |
| US20150021119A1 (en) | Self-launching movable scaffolding system | |
| WO2014200443A1 (en) | Self-launching movable scaffolding system | |
| CN102395731B (en) | Overhead form traveller and method | |
| AU2010246534B2 (en) | Factory for the molding manufacture of precast concrete voussoirs for the construction of wind generator support towers | |
| JP2007040020A (en) | Construction method for prestressed concrete box girder bridge | |
| JP2003253623A (en) | Rebuilding construction method for bridge beam | |
| CN114214920B (en) | Large-span double-layer built-up steel truss arch bridge and construction method thereof | |
| CN112211112A (en) | Steel box girder installation method adopting double-guide-girder erection machine on existing bridge | |
| CN210766418U (en) | Prefabricated assembled bridge multi-span synchronous mounting bridge girder erection machine | |
| CN113863151A (en) | Steel box tied arch bridge construction method | |
| CN112160246A (en) | Method for mounting combined beam | |
| JP2004324164A (en) | Method of constructing corrugated steel web pc bridge closure section | |
| CN111945572B (en) | Multi-connected arch bridge erecting machine and multi-connected arch bridge erecting method | |
| CN114263114A (en) | Construction system and construction method of large-section steel box girder | |
| CN112610014A (en) | Sliding structure for railway passenger station reconstruction and extension project and construction method thereof | |
| CN205474873U (en) | Fixed mutual rail device that may open and close supporting system and guide system | |
| CN219753024U (en) | Assembled double-door type temporary support for installing viaduct steel box girder | |
| CN201330376Y (en) | Construction-used movable unsupported bridging machine | |
| CN213740646U (en) | Bridge deck temporary support for mounting steel box girder | |
| CN221000646U (en) | Bent cap construction horse way device | |
| CN219690284U (en) | Steel tube concrete rigid frame bridge for high-speed railway | |
| CN216551595U (en) | Pier stud reinforcement is as industry platform | |
| CN219010988U (en) | Auxiliary device for installing lower hanging box of arch bridge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211231 |