JP3682247B2 - Construction method of elevated traffic route - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for constructing an elevated traffic route in a traffic route.
[0002]
[Prior art]
Conventionally, in order to eliminate traffic congestion at traffic road intersections, when constructing an elevated traffic road directly above an existing traffic road, the construction of an elevated traffic road directly above the existing traffic road requires the passage of the existing traffic road. Regulated on a large scale and constant traffic jams occurred.
[0003]
In this way, on the existing traffic routes that are restricted in traffic, the passage of vehicles has been secured by the following method.
(1) A method of passing by a detour that allows a vehicle to pass through a detour on the same plane constructed around an existing traffic route as a work section.
(2) A traffic method based on division regulation in which the traffic route of the work section is divided and regulated, the construction is partially stopped and construction is performed, and at the same time, the vehicle is alternately passed using only other lanes.
[0004]
[Problems to be solved by the invention]
However, the following problems existed in the conventional method of passing traffic in the work section.
(1) In the method of passing by the detour, it is necessary to secure a site for constructing a detour on the same plane, and the construction period for constructing the detour on the same plane is long. The cost was high.
[0005]
(2) In the traffic method based on the above-mentioned division regulation, the traffic volume of the existing traffic road that is the work section is limited, so traffic congestion occurs, and the impact on the environment and economic activities of the surrounding community becomes large, Since construction cannot be performed in a lump, the construction period was long and construction costs were high.
[0006]
Therefore, it is desirable to establish an elevated traffic route directly above the existing traffic route that will be the work section to ensure vehicle traffic. However, the construction of the elevated traffic route greatly restricts existing traffic, Therefore, the development of an effective construction method has been desired because it has a large impact on the environment and economic activities of the surrounding community.
[0007]
Therefore, the present invention eliminates the need to construct a detour around the existing traffic road when securing a work area on the existing traffic road, and reduces the influence on the existing traffic while reducing the influence on the existing traffic road. It is an object of the present invention to provide a construction method for an elevated traffic route that easily constructs an elevated traffic route.
[0008]
[Means for Solving the Problems]
This invention is comprised so that the said subject may be solved, and invention of Claim 1 is a construction method of an elevated traffic route in a traffic road, Comprising: (1) Along existing traffic road a post standing step of standing struts into a plurality of footing that is embedded at predetermined intervals, instead received movably mount the bridge divided from worktable erected traffic path (2) existing, By moving the movable platform on the existing traffic route, the divided bridges are sequentially sent out from the work platform, and the divided bridges transported by the movable platform are installed between the columns to Bridge delivery process to build a bridge above the road, and (3) Lower the predetermined part of the bridge and connect the bridge and the existing traffic route, thereby constructing an elevated traffic route on the existing traffic route by the bridge And a bridge descent process.
[0009]
Here, the traffic road refers to various transportation such as roads, railway tracks, and traffic paths such as sidewalks.
[0010]
According to the invention described in claim 1, the divided bridges are sequentially sent out between the columns erected on the footing from the work table using the space above the existing traffic path, so that the bridge is Since it is constructed above the road, it is possible to construct an elevated traffic road having high stability without affecting the traffic of the existing traffic road.
Furthermore, in the bridge descent process, by elevating a predetermined portion of the bridge, an elevated traffic road is constructed in a short time on the existing traffic road, so the construction period of the elevated traffic road can be shortened.
In addition, by supporting the support on the basis of the footing, an existing elevated roadway can be constructed in a short period of time without the need for a wide range of construction sites, and the passage of vehicles, etc. in the work section can be secured early. The impact on traffic can be reduced.
Furthermore, since the bridge can be separately manufactured on a work table that is an upper space of the existing traffic road, it is easy to carry in and the construction site for the elevated traffic road can be reduced.
[0012]
In addition , by using a movable platform, the divided bridges are sent out using the space above the existing traffic route, so there is no impact on the traffic on the existing traffic route, and the elevated traffic has high stability. A road can be built.
[0013]
The invention according to claim 2 is the construction method of the elevated traffic road according to claim 1, characterized in that, in the bridge lowering step, a predetermined part of the bridge is lowered by the lowering device.
[0014]
According to this invention, since the descent work of the bridge is simplified by using the descent device, it is possible to complete the construction in the stop time zone of the traffic road such as at night.
[0015]
The invention described in claim 3 is the construction method of the elevated traffic road according to claim 1 or 2 , characterized in that a foundation pile is provided on the footing after the bridge descending step.
[0016]
According to the present invention, after securing the passage of the vehicle etc. by the elevated traffic road provided with the footing foundation, the foundation pile is provided directly under the road surface of the elevated traffic road, so that the traffic of the vehicle etc. is affected. In addition, the stability of the elevated traffic route can be further improved.
[0017]
The invention according to claim 4 is the construction method of the elevated traffic road according to any one of claims 1 to 3 , characterized in that a connecting beam is provided between the footings. To do.
[0018]
According to this invention, by connecting the footings with the connecting beam, the load related to the footing is distributed to the plurality of footings, so that the planar dimensions of the footing can be reduced, so that when the footing is embedded Traffic regulations can be reduced.
[0019]
The invention according to claim 5 is the construction method of the elevated traffic road according to claim 4 , wherein the footing and the connecting beam are precast members.
[0020]
According to this invention, since the footing and the connecting beam are precast members formed in advance in a factory or the like, the installation work of the footing and the connecting beam is simplified and the construction range is further reduced. Traffic restrictions when building can be further reduced.
[0021]
Therefore, in the construction method of the elevated traffic route of the present invention, an existing elevated traffic route having high stability above the traffic route can be constructed easily and in a short period of time while reducing the influence on existing traffic. Without providing a detour around the traffic route, the impact on the environment and economic activities of the surrounding community can be reduced, the construction period can be shortened, and the construction cost can be reduced.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0023]
The construction method of the elevated traffic road according to the embodiment of the present invention can be applied to a traffic road such as an automobile road, a train track, or a sidewalk. In this embodiment, the elevated traffic road is elevated at an intersection on the automobile road. A case where an intersection is three-dimensionalized by providing a road will be described as an example.
[0024]
FIGS. 1A and 1B are diagrams illustrating a column erecting process, in which FIG. 1A is a side view illustrating when the column is erected, and FIG. 1B is a plan view illustrating when the column is erected. FIG. 2 is a side view showing the bridge feeding process. 3A and 3B are views showing a bridge sending process, where FIG. 3A is a cross-sectional view taken along the line AA in FIG. 2, and FIG. FIG. 4 is a view showing a bridge feeding process, and is a cross-sectional view taken along the line CC in FIG. 5A and 5B are diagrams showing a bridge lowering process, in which FIG. 5A is a side view of the bridge, and FIG. 5B is a side view of the bridge. 6A and 6B are diagrams showing a bridge lowering process, in which FIG. 6A is a sectional view taken along the line DD of FIG. 5B, and FIG. 6B is a front sectional view showing another example of the bridge lowering process. FIG. 7 is a view showing a bridge lowering process, and is a cross-sectional view taken along line EE of FIG. FIG. 8 is a view showing another configuration of the connecting beam, (a) is a plan view of the configuration in which the connecting beam is provided only in the width direction of the road, and (b) is a connecting beam in the longitudinal direction and the width direction of the road. It is a top view of the structure provided.
[0025]
First, each device in the construction method of an elevated road according to an embodiment of the present invention will be described.
The work table 6 serves as a work place for dividing and manufacturing the bridge 2 to be described later. As shown in FIG. 2 and FIG. 3 (a), the work table 6 stands on both sides 3 ′ and 3 ′ of the road 3. The gate-shaped platform is composed of the leg portions 7 and 7, the plate-like stage 8 a installed on the upper portions of the leg portions 7 and 7, and the gate-type crane 8 b installed on the stage 8 a. It is. The stage 8a of the work table 6 is preferably supported by a plurality of legs 7 in consideration of stability.
[0026]
And the support | pillar 4 and the temporary pillar 5 play the role which supports the bridge 2, and as shown in FIG.1, FIG.2, FIG.3 (b), the support | pillar 4 is both sides 3 ', 3' of the road 3. As shown in FIG. It is a rod-like column erected symmetrically on the left and right sides, and is erected on each footing 40 embedded in the ground at a predetermined height for each pair of columns 4 and 4 on both sides 3 ′ and 3 ′ of the road 3. doing.
In addition, by providing the temporary pillars 5 having a predetermined height above the pillars 4 having different heights, the upper ends of the pillars 4 or the temporary pillars 5 erected on the road 3 have the same height.
[0027]
Further, the footing 40 is a precast member formed in advance at a factory or the like. As shown in FIG. 1, by providing a connecting beam 41 between the pair of footings 40 in the longitudinal direction of the road 3, the footings 40 are connected to each other. It is connected. Here, the footing 40 and the connecting beam 41 penetrate a PC steel material 42 such as a PC steel wire or a PC steel rod inside, and both ends of the PC steel material 42 such as a PC steel wire or a PC steel rod are connected to the footings 40, 40. They are integrated by a so-called post-tensioning method in which they are fixed to each other and tension is applied.
Therefore, since the load related to the footing 40 is distributed to the plurality of footings 40 through the connecting beam 41, the planar dimension of the footing 40 that receives pressure can be reduced, and the footing 40 can be made a small precast member.
The method of integrating the footing 40 and the connecting beam 41 is not limited to the post tension method in which tension is applied by the PC steel material 42 such as a PC steel wire or a PC steel rod, and it is easily and reliably integrated. If possible, the integration method is not limited.
[0028]
In addition, the movable mount 9 serves to convey a divided bridge 2 ', which will be described later, from the work table 6 to the support column 4, and as shown in FIGS. A support beam 10 is erected in the width direction of the road 3 on the upper portions of the leg portions 11, 11 standing on the side. Further, the movable base 9 is provided with wheels 12 and drive jacks 15a and 15b at the lower part of the leg part 11, and is laid on the shoulders 3 'and 3' of the road 3 with the same width as the leg parts 11 and 11. It is possible to move on the two rails 13, 13.
The movable mount 9 is composed of two movable mounts 9a and 9b as a set, and the ends of the movable mounts 9a and 9b have rails at the front and rear. Drive jacks 15a and 15b capable of gripping 13 are provided for the two rails 13 and 13, respectively.
[0029]
Here, the work table 6, the support column 4, the temporary column 5, and the movable mount 9 can withstand the load when the bridge 2 described later is supported, and have sufficient stability when the bridge 2 is supported. For example, the material and the structure are not limited as long as the structure is a structure. For example, the movable base 9 may be moved without using the rail 13, and may be a moving means such as a rubber tire or an air caster. The driving force is not limited.
[0030]
And the bridge 2 plays the role which comprises the elevated road 1, and as shown in FIG. 5, it is a bridge comprised from several divided bridge 2 '. The material and structure of the divided bridge 2 ′ are not limited as long as the vehicle can pass safely.
[0031]
Next, the construction method of the elevated road 1 according to the embodiment of the present invention will be described.
First, in (1) the column erecting step, as shown in FIG. 1, the footing 40 is embedded in the ground on both sides 3 ′ and 3 ′ of the road 3 at a predetermined interval in the longitudinal direction of the road 3. A connecting beam 41 is provided between the footings 40 adjacent to each other in the longitudinal direction of the road 3 and is connected by a post tension method using a PC steel wire 42.
In addition, since the footing 40 and each divided connecting beam 41 ′ are small precast members, the excavation amount is small and the construction range is reduced, so that the foundation can be embedded easily and in a short period of time. Traffic restrictions due to construction can be reduced.
[0032]
Here, the connecting beam 41 of the footing 40 is not limited to the configuration provided between the pair of footings 40 in the longitudinal direction of the road 3, and as shown in FIG. 8B, depending on the load of the elevated road, the ground conditions, etc., as shown in FIG. 8B, such as the configuration provided in both the width direction and the longitudinal direction of the road 3, or the configuration without the connecting beam 41 It is preferable to select appropriately.
Furthermore, the footing 40 and the connecting beam 41 are not limited to the precast member introduced with prestress, and may be configured with a precast member that does not introduce prestress. It may also be made of cast-in-place concrete (with or without pre-stress), but in this case, traffic control due to construction of the foundation can be controlled by installing it during nighttime traffic stoppage periods. It is preferable to reduce.
[0033]
Next, the support column 4 is erected on each footing 40, and a temporary column 5 having a predetermined height is provided on the upper portion of each support column 4 as shown in FIG. Since the temporary pillar 5 is removed after temporarily supporting the divided bridge 2 ′, the temporary pillar 5 and the support column 4 are joined by an easily separable joining method such as a bolt joint.
[0034]
Next, in the (2) bridge sending-out step, the work table 6 is erected at a predetermined position on the road 3 as shown in FIGS. As a result, the stage 8 a and the portal crane 8 b of the work table 6 are arranged immediately above the road 3.
Next, as shown in FIGS. 2 and 4, two rails 13, 13 are laid on both sides 3 ′, 3 ′ of the road 3 with the same width as the legs 11, 11 of the movable mount 9, A movable mount 9 is erected on the rails 13 and 13. Thereby, since the movable mount 9 can move in the longitudinal direction of the road 3, the support beam 10 of the movable mount 9 can also move right above the road 3.
[0035]
Next, using the stage 8 a of the work table 6 as a work place, the divided bridge 2 ′ is manufactured using the portal crane 8 b immediately above the road 3. Since the divided bridge 2 'is composed of divided members, it can be easily carried into the construction site. Furthermore, since the divided bridge 2 'is manufactured in the upper space of the road 3, it is possible to reduce the size of a transport machine such as a truck and a lifting machine such as a crane when a member of the divided bridge 2' is carried in. it can.
[0036]
Next, as shown in FIGS. 2 and 4, the divided bridge 2 ′ is received on the support beam 10 of the movable mount 9 via the hydraulic jack 14, and the movable mount 9 is directly above the road 3. Is moved to a predetermined position, and the hydraulic jack 14 is lowered and replaced with the column 4 or the temporary column 5, so that it is installed between the two columns 4, 4 standing in the longitudinal direction of the road 3. At this time, a temporary fixing state is obtained by applying a temporary fixing treatment to the divided bridge 2 '.
[0037]
Here, a method of moving the movable mount 9 will be described.
First, as shown in FIG. 2, the drive jack 15 a installed on the movable base 9 a ahead in the traveling direction holds the rail 13. At this time, the drive jack 15b installed on the rear movable gantry 9b is in a state in which the rail 13 is not gripped, and is movable on the rail 13.
Next, by retracting the drive jack 15a installed on the front movable base 9a, the front movable base 9a moves in the traveling direction. At this time, since the movable mounts 9a and 9b are connected by the loaded divided bridge 2 ', the rear movable mount 9b and the divided movable mount 9b are divided in accordance with the movement of the front movable mount 9a. Bridge 2 'moves in the direction of travel.
Next, the drive jack 15a installed on the front movable base 9a is separated from the rail 13, and the drive jack 15b installed on the rear movable base 9b holds the rail 13. In this state, by extending the drive jack 15b installed on the rear movable base 9b, the movable base 9 and the divided bridge 2 'are pushed out and moved in the traveling direction.
By repeating the above operation, the movable mount 9 and the divided bridge 2 ′ move immediately above the road 3.
[0038]
Next, as shown in FIG. 5A, the bridge 2 constituted by the bridge 2 ′ divided just above the road 3 is constructed by repeating the bridge feeding process.
In addition, since the work bench | platform 6, the movable mount frame 9, and the rail 13 are not used in the process after a bridge sending-out process, if it affects work, it is preferable to remove.
[0040]
Then, (3) in the bridge lowering step, as shown in FIG. 5B, the divided bridge 2 ′ is lowered and fixed to the upper end of each column 4 whose height is determined for each column 4. A slope portion is provided on the bridge 2, and a sliding portion 16 is installed at both ends of the bridge 2 to connect to the road 3.
Here, a method for lowering the divided bridge 2 'will be described. As shown in FIG. 6A, the divided bridge 2 ′ is lowered by a vehicle 4d provided with a hydraulic lifting device 4e. First, the vehicle 4d is arranged on the road 3 in a state where traffic of an existing vehicle is temporarily restricted during a traffic stoppage time such as at night, and the bridge 2 'divided by the hydraulic lifting device 4e is supported. Next, the temporary pillar 5 is removed from each support column 4 so that the divided bridge 2 ′ is supported only by the hydraulic lifting device 4 e, and then the hydraulic lifting device 4 e is lowered to separate the divided bridge 2. Replace 'with the upper end of the column 4 and fix it.
[0041]
Further, the method for lowering the divided bridge 2 'is not limited as long as the lowering operation can be performed stably in a short time. For example, as shown in FIG. In the process, a steel beam 4c supported by a hydraulic jack 4b provided at a predetermined portion of the fixed beam 4a is provided with a fixed beam 4a by a crane or the like at the upper end of the columns 4 and 4 which are paired in the width direction of the road 3. The bridge 2 is temporarily held immediately above the road 3 by suspending the divided bridge 2 ′ narrower than the internal dimensions of the columns 4 and 4. Next, in the bridge lowering process, the steel bridge 4c is lowered by the hydraulic jack 4b, and the divided bridge 2 'is lowered, fixed to the column 4 at a predetermined position with a bracket or the like, and the bridge 2 is provided with the ramp portion. There is also. The fixed beam 4a is removed from the columns 4 and 4 after the divided bridge 2 'is lowered.
[0042]
Furthermore, lifting machines such as cranes are arranged on both sides 3 ′ and 3 ′ of the road 3 and the divided bridge 2 ′ is suspended so that the bridge 2 can be placed above the road 3 without using the temporary pillar 5. There is also a method in which the bridge 2 ′ divided by the crane or the like is lowered and fixed to the column 4 after being temporarily held.
[0043]
Finally, the road surface 17 of the elevated road 1 just above the road 3 is used to ensure the passage of existing vehicles.
[0044]
Therefore, in the construction method of the elevated road 1 according to the present invention, the elevated road 1 having high stability can be constructed easily and in a short period above the road 3 in a state where the influence on the existing traffic is reduced. it can.
[0045]
In addition, when the ground of the road 3 that constructs the elevated road 1 is soft ground, in the structure in which only the footing is the foundation of the support column 4, the elevated road 1 is not reliably stabilized, so the ground is improved, It is necessary to install foundation piles in the footing.
[0046]
Hereinafter, a method for constructing an elevated road provided with foundation piles will be described with reference to the accompanying drawings.
FIG. 9 is a side view of an elevated road provided with foundation piles. 10A and 10B are views showing a footing provided with a foundation pile, where FIG. 10A is a cross-sectional view taken along line FF in FIG. 9 and FIG. 10B is a plan view showing another configuration of the footing. FIG. 11 is a diagram showing an elevated road provided with foundation piles, and is a cross-sectional view taken along the line GG in FIG.
[0047]
First, improve the ground on both sides 3 'and 3' of the road where the columns will be installed. This ground improvement method is not limited as long as it enhances the support capacity of the ground. Replacement of the soft ground with high quality materials, replacement of the ground with high density, cement, etc. It is preferable to use a method suitable for the target ground because there is consolidation such as injection and mixing.
[0048]
Next, as shown in FIGS. 9 and 11, foundation pile footings 40 ′ and connecting beams 41 are embedded in the ground on both sides 3 ′ and 3 ′ of the improved road, by the same method as in the above embodiment. Build elevated road 1.
Here, as shown in FIG. 10 (a), the foundation pile footing 40 'has a structure in which a reinforcing bar 44 is not arranged in a portion joined to the foundation pile 43, and the pile foundation is fitted in this portion. A vertical hole 45 that can be joined passes through.
[0049]
Next, the elevated road 1 is used in a state of being supported only by the footing 40 ′ for the foundation pile, and the passage of the existing vehicle 30 is ensured.
Finally, as shown in FIG. 11, the foundation pile 43 is driven through the vertical hole 45 of the foundation pile footing 40 ′ in which each support column 4 is erected, and the upper end portion of the foundation pile 43. And foundation pile footing 40 '. At this time, since the foundation pile footing 40 'is provided with the vertical hole 45 into which the foundation pile 43 is fitted, the foundation pile 43 can be easily driven into the ground from above the foundation pile footing 40'. Can do.
Here, as shown in FIG. 10 (b), the footing is configured in such a manner that only the footing 40 is provided in advance, the post 4 is erected on the footing 40, the elevated road 1 is constructed, and the passage of the vehicle is ensured. There is also a configuration in which the foundation pile 43 is provided by joining the foundation pile footings 46. In this configuration, since the footing 40 is further reduced in size, the construction range when embedding the footing 40 in the column erecting process is further reduced. can do.
[0050]
Therefore, since the foundation pile 43 is provided directly under the road surface of the elevated road 1 while passing the vehicle through the elevated road 1, the foundation can be easily and quickly installed on the elevated road 1 without affecting the existing traffic. A pile 43 can be provided.
In addition, since the foundation pile 43 can be provided easily and in a short period of time, it may be constructed by temporarily restricting the passage of existing vehicles before the bridge descent process.
[0051]
As mentioned above, although an example about a suitable embodiment was explained about the present invention, the present invention is not restricted to the embodiment concerned, and a design change is possible suitably in the range which does not deviate from the meaning of the present invention.
[0052]
【The invention's effect】
Therefore, in the construction method of the elevated traffic route of the present invention, an elevated type having high stability without reducing the influence on the existing traffic above the existing traffic route without requiring a wide construction site. In order to build a traffic route easily and in a short period of time, without creating a detour around the existing traffic route, the impact on the environment and economic activities of the surrounding community is reduced, the construction period is shortened, and construction costs are reduced. Can be reduced.
In addition, even if an elevated traffic route is constructed on soft ground, foundation piles can be constructed easily and in a short period of time on the elevated traffic route while securing the passage of vehicles, etc. through the elevated traffic route. it can.
[Brief description of the drawings]
1A and 1B are views showing a column erecting process according to an embodiment of the present invention, in which FIG. 1A is a side view showing when the column is set up, and FIG. 1B is a plan view showing when the column is set up; It is.
FIG. 2 is a side view showing a bridge delivery process according to an embodiment of the present invention.
3A and 3B are views showing a bridge feeding process according to an embodiment of the present invention, in which FIG. 3A is a cross-sectional view taken along line AA in FIG. 2 and FIG. 3B is a cross-sectional view taken along line BB in FIG.
4 is a view showing a bridge feeding process according to the embodiment of the present invention, and is a cross-sectional view taken along the line CC in FIG.
5A and 5B are views showing a bridge lowering process according to an embodiment of the present invention, in which FIG. 5A is a side view of the bridge, and FIG. 5B is a lower side view of the bridge.
6A and 6B are diagrams showing a bridge lowering process according to an embodiment of the present invention, in which FIG. 6A is a cross-sectional view taken along the line DD in FIG. 5B, and FIG. It is front sectional drawing.
7 is a view showing a bridge lowering process according to the embodiment of the present invention, and is a cross-sectional view taken along line EE of FIG. 5 (b).
8A and 8B are diagrams showing another configuration of a connecting beam, in which FIG. 8A is a plan view of a configuration in which a connecting beam is provided only in the width direction of the road, and FIG. 8B is a connecting beam in the longitudinal direction and the width direction of the road. It is a top view of the structure which provided.
FIG. 9 is a side view of an elevated road provided with foundation piles.
10A and 10B are views showing a footing provided with a foundation pile, where FIG. 10A is a cross-sectional view taken along line FF in FIG. 9 and FIG. 10B is a plan view showing another configuration of the footing.
11 is a diagram showing an elevated road provided with foundation piles, and is a cross-sectional view taken along the line GG in FIG. 9;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Elevated road 2 ... Bridge 2 '... Divided bridge 3 ... Existing road 3' ... Both sides of existing road 4 ... Post 4a ... · Fixed beam 4b · · · hydraulic jack 4c · · · steel bar 4d · · · vehicle 4e · · · hydraulic lifting device 5 · · · temporary column 6 · · · work table 7 · · · Work table leg 8a ... Work table stage 8b ... Gate crane 9 ... Movable mount 9a ... Front moveable mount 9b ... Rear moveable Mounting frame 10 ··· Supporting beam 11 of movable frame ··· Leg 12 of movable frame · · · Wheel 13 of movable frame · · · Rail 14 · · · Hydraulic jack 15a · · · · Driving jack 15b · · · Driving jack 16 · · · Sliding part 17 · · · Road surface 30 of the elevated road · · · Vehicle 40 · · · Footing 40 ' ····················· Footing 41 for foundation pile ············· 41 46 ... Footing for foundation pile

Claims (5)

A method for constructing an elevated traffic route in a traffic route, comprising the following steps.
(1) A strut erection process in which struts are erected on a plurality of footings embedded at predetermined intervals along existing traffic paths.
(2) pre-Symbol replaced receive the divided bridge movably mount the worktable erected on existing traffic channel, by moving the movable platform in the existing traffic routes, the split from the worktable A bridge delivery step of constructing a bridge above the existing traffic road by sequentially sending out the bridges that have been formed, and by laying the divided bridges conveyed by the movable platform between the columns;
(3) A bridge lowering step of constructing an elevated traffic road on the existing traffic road by the bridge by lowering a predetermined portion of the bridge and connecting the bridge and the existing traffic road. The method for constructing an elevated traffic path according to claim 1, wherein in the bridge lowering step, a predetermined portion of the bridge is lowered by a descent device. The method for constructing an elevated traffic road according to claim 1 or 2 , wherein a foundation pile is provided on the footing after the bridge descending step. The method for constructing an elevated traffic path according to any one of claims 1 to 3 , wherein a connecting beam is provided between the footings. The method for constructing an elevated traffic route according to claim 4 , wherein the footing and the connecting beam are precast members.

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