JP3779978B2 - Elevated traffic route - Google Patents

Description

  The present invention relates to an elevated traffic route in a traffic route.

  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.

In this way, on traffic routes that are restricted in traffic, vehicle traffic is ensured 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) Divide and regulate the existing traffic route that will be the work section, partially stop the lane traffic and perform construction, and at the same time use the other lane only to pass the existing vehicle alternately How to pass by regulation.

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.

(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.

  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 elevated transportation route has been desired because it will have a significant impact on the environment and economic activities of the surrounding community.

  Therefore, in the case where the work area is secured on the existing traffic road, the present invention does not construct a detour around the existing traffic road and reduces the influence on the existing traffic on the existing traffic road. It is an object of the present invention to provide an elevated traffic route for easily constructing an elevated traffic route.

The present invention is configured to solve the above-mentioned problem, is an elevated traffic route, and a footing that is a plurality of precast members embedded at a predetermined interval along an existing traffic route, Consists of a plurality of struts erected on each footing and a bridge that is composed of a plurality of divided bridges erected between the struts and is formed with a ramp so as to connect to existing traffic paths The footing for the foundation pile, which is a precast member having a through hole into which the foundation pile can be fitted, is joined to the footing, and the foundation pile is joined to the through hole of the footing for the foundation pile , A connecting beam, which is a precast member, is provided between them. Moreover, you may integrate a footing and a connection beam by fixing the both ends of the PC steel material penetrated to the connection beam to the footing, and adding tension.

  Here, the traffic road refers to various transportation such as roads, railway tracks, and traffic paths such as sidewalks.

  In the elevated traffic route of the present invention, by supporting the support on the basis of the footing, an elevated traffic route can be constructed in a short period of time without the need for a wide range of construction sites, and vehicles etc. in the work section can be passed. Since it can be secured early, the impact on existing traffic can be reduced.

  In addition, it is possible to install foundation piles directly under the road surface of the elevated road after securing the passage of the vehicle etc. by the elevated traffic road with the foundation by footing, so that the traffic of the vehicle etc. is not affected. The stability of the elevated traffic route can be further increased.

  In addition, the footing is precasted in advance at a factory, etc., which simplifies the footing installation work and further reduces the construction range, further reducing traffic restrictions when building the foundation. be able to.

In addition , by connecting the footings with connecting beams, the load related to the footing is distributed to a plurality of footings, so that the plane dimensions of the footings are reduced, so that the construction range is reduced and the footing is constructed. Traffic regulations can be reduced.

  In addition, by making the connecting beam a precast member formed in advance in a factory, etc., the installation work of the connecting beam is simplified and the construction range is further reduced, so traffic restrictions when building the foundation are further reduced. Can be reduced.

Therefore, in the elevated traffic road of the present invention, an elevated traffic road having high stability can be provided in a state where the influence on the existing traffic is reduced above the existing traffic road without requiring a wide construction site. Since it can be constructed easily and in a short period of time, it will reduce the impact on the environment and economic activities of the surrounding community without creating a detour around the existing traffic route, shorten the construction period, and reduce the construction cost. Can be reduced.
Furthermore, 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. by the elevated traffic route. it can.

  Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

  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, an elevated road is provided at an intersection in an automobile road. Thus, a case where the intersection is three-dimensional will be described as an example.

  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. 2A and 2B are views showing a bridge erection process, in which FIG. 2A is a side view showing a state where a bridge is erected, and FIG. 2B is an AA cross-sectional view. FIGS. 3A and 3B are views showing a bridge lowering process, in which FIG. 3A is a side view of the bridge, and FIG. 3B is a side view showing when the bridge is lowered. 4A and 4B are diagrams showing a bridge lowering process, in which FIG. 4A is a cross-sectional view taken along line BB in FIG. 3B, and FIG. 4B is a front cross-sectional view illustrating another example of the bridge lowering process. FIG. 5 is a cross-sectional view taken along the line CC in FIG. FIG. 6 is a diagram 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 plan view of the connecting beam in the longitudinal direction and the width direction of the road. It is a top view of the structure provided.

First, each device in the elevated road according to the embodiment of the present invention will be described.
The column 4 and the temporary column 5 play a role of supporting the bridge 2, and as shown in FIG. 1 and FIG. 2, the column 4 is a rod-like shape erected symmetrically on both sides 3 ′ and 3 ′ of the road 3. These pillars are erected on each footing 40 embedded in the ground at a predetermined height for each pair of support columns 4 and 4 on both sides 3 ′ and 3 ′ of the road 3.
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.
The column 4 and the temporary column 5 can withstand the load when the bridge 2 described later is supported, and the material is limited as long as the structure has sufficient stability when the bridge 2 is supported. Is not to be done.

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. The integration method is not limited as long as it can be used.

  And the bridge 2 plays the role which comprises the elevated road 1, and as shown to Fig.3 (a), it is a bridge comprised from the some divided | segmented bridge 2 '. The material and structure of the divided bridge 2 ′ are not limited as long as the vehicle can pass safely.

Next, the construction method of the elevated road 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 material 42 such as a PC steel wire or a PC steel bar.
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.

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. configuration and provided only, as shown in FIG. 6 (b), etc. configuration provided on both width direction and longitudinal direction of the road 3, it is preferable to appropriately select the load of elevated road 1, by ground conditions, etc. .
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.

  Next, the pillar 4 is erected on each footing 40, and a temporary pillar 5 having a predetermined height is provided on the upper part of each pillar 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 column 4 are joined by an easily separable joining method such as a bolt joint.

  Next, (2) in the bridge erection step, as shown in FIG. 2 (b), the divided bridge 2 ′ is carried in by a transportation means such as a truck, and the divided bridge 2 ′ is lifted by a crane K. It is installed between two sets of support columns 4, 4 erected 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 '.

  Next, as shown in FIG. 3A, the bridge erection process is repeated to construct the bridge 2 constituted by the bridge 2 'divided immediately above the road 3.

  Here, in the bridge erection step, it is also possible to erection the divided bridge 2 ′ without using the crane K, for example, supported by a plurality of piers standing on both sides 3 ′ and 3 ′ of the road 3. By creating a bridge 2 'divided directly on the road 3 using the plate-like stage as a work place, and sending out the divided bridge 2' using a portal-type carriage placed on the road 3 from the stage, A bridge 2 'divided between 4 and 4 may be installed, and a rail is installed on the upper end of each column 4 along the longitudinal direction of the road 3, and the divided bridge 2' is railed. It may be moved up and replaced with each support column 4, and the configuration is not limited as long as the bridge 2 ′ divided using the upper space of the road 3 is constructed.

Then, (3) in the bridge lowering step, as shown in FIG. 3 (b), 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 ramp is provided on the bridge 2, and sliding portions 6 are installed on 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. 4A, 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.

  Further, the method for lowering the divided bridge 2 'is not limited as long as it can perform the lowering work in a stable state 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.

  Further, in the bridge erection process, the bridge 2 ′ divided by the crane K is kept in a suspended state so that the bridge 2 is temporarily held above the road 3 without using the temporary pillar 5, and then the crane K There is also a method in which the bridge 2 'divided by the above is lowered and fixed to the support column 4 (see FIG. 2B).

  Finally, the road surface 7 of the elevated road 1 directly above the road 3 is used to ensure the passage of existing vehicles.

  Therefore, in the elevated road 1 according to the embodiment of the present invention, the elevated road 1 having high stability can be easily and quickly built above the road 3 in a state where the influence on the existing traffic is reduced. Can do.

  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.

Hereinafter, a method for constructing an elevated road provided with foundation piles will be described with reference to the accompanying drawings.
FIG. 7 is a side view of an elevated road provided with foundation piles. FIG. 8 is a view showing a footing provided with a foundation pile, where (a) is a sectional view taken along the line DD in FIG. 7, and (b) is a plan view showing another configuration of the footing. FIG. 9 is a view showing an elevated road provided with foundation piles, and is a cross-sectional view taken along line EE of FIG.

  First, the ground is improved on both sides 3 'and 3' of the road on which the column 4 is erected (see FIG. 9). 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.

Next, as shown in FIGS. 7 and 9, foundation pile footing 40 'and connecting beam 41 are embedded in the ground on both sides 3' and 3 'of the improved road 3, and the same method as in the above embodiment is used. The elevated road 1 is constructed by
Here, as shown in FIG. 8A, the foundation pile footing 40 ′ has a structure in which the reinforcing bar 44 is not arranged at a portion to be joined to the foundation pile 43, and the foundation pile 43 is disposed at this portion. The vertical hole 45 which can be fitted is penetrated.

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. 9, a 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 an 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. 8 (b), the footing is configured by providing only the footing 40 in advance, and the post 4 is erected on the footing 40 to construct the elevated road 1, thereby ensuring the passage of the vehicle. There is also a configuration in which the foundation pile 43 is provided by joining the foundation pile footing 46 later. In this configuration, since the footing 40 is further downsized, the construction range when embedding the footing 40 in the column erecting process is further increased. Can be reduced.

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, the passage of the existing vehicle 30 may be temporarily restricted before the bridge descent process.

  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.

It is the figure which showed the support | pillar standing-up process which concerns on embodiment of this invention, (a) is a side view which shows the time of standing upright, and (b) is a top view which shows the time of standing upright. It is the figure which showed the bridge construction process which concerns on embodiment of this invention, (a) is a sectional side view which shows the time of constructing a bridge, (b) is AA sectional drawing. It is the figure which showed the bridge lowering process which concerns on embodiment of this invention, (a) is a side view of a bridge, (b) is a side view which shows the time of dropping a bridge. It is the figure which showed the bridge lowering process which concerns on embodiment of this invention, (a) is BB sectional drawing of FIG.3 (b), (b) is front sectional drawing which showed the other example of the bridge lowering process. is there. It is the figure which showed the bridge lowering process which concerns on embodiment of this invention, and is CC sectional drawing of FIG.3 (b). It is the figure which showed the other structure of a connecting beam, (a) is a top view of the structure which provided the connecting beam only in the width direction of the road, (b) is the structure which provided the connecting beam in the longitudinal direction and the width direction of the road FIG. It is a side view of an elevated road provided with foundation piles. It is the figure which showed the footing which provided the foundation pile, (a) is DD sectional drawing of FIG. 7, (b) is the top view which showed the other structure of the footing. It is the figure which showed the elevated road which provided the foundation pile, and is EE sectional drawing of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevated road 2 Bridge 2 'Divided bridge 3 Road 4 Post 30 Vehicle 40 Foundation pile footing 41 Connecting beam 42 PC steel 43 Foundation pile

Claims (2)

A footing that is a plurality of precast members embedded at predetermined intervals along an existing traffic route,
A plurality of struts erected on each footing;
It is composed of a plurality of divided bridges erected between the columns, and a bridge in which a ramp is formed so as to connect to the existing traffic road,
The footing for a foundation pile which is a precast member having a through hole into which the foundation pile can be fitted is joined to the footing, and the foundation pile is joined to the through hole of the footing for the foundation pile ,
An elevated traffic road characterized in that a connecting beam, which is a precast member, is provided between the footings . By adding the tension by the opposite ends is fixed to the footing of the PC steel material is passed through the connecting crossbeams, according to claim 1, characterized in that the tie beam and the footing are integrated Elevated traffic route.

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