JP2003090052A - Foundation constructing method, footing foundation, and foundation structure of elevated highway - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foundation constructing method, a footing foundation, and a foundation structure of an elevated highway, which greatly reduce an influence on an environment and economic activities in a surrounding community by constructing the foundation in a short period of time even in the case of small land for execution of work, without making a concrete material placed and cured on a construction site, in the construction of the foundation of a structure such as the elevated highway. SOLUTION: Characteristically, this foundation constructing method comprises: a precast-member installing process in which a plurality of precast members 2 and 3 are installed; and a footing forming process in which a tendon makes the precast members 2 and 3 integrated with each other so as to form a footing 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foundation construction method, a footing foundation, and a foundation structure for an elevated traffic route.

[0002]

2. Description of the Related Art Conventionally, in the construction of constructing an elevated traffic route and making the intersection three-dimensional in order to eliminate the traffic congestion at the intersection of the traffic route, the construction period of the foundation construction is often the construction period of the elevated traffic route. Occupy And, the foundation of the conventional elevated traffic route was constructed by the following method. (1) An excavation process of constructing a groove for installing footing by excavating the vicinity of or on a traffic route. (2) A pile driving process of driving a reinforced concrete foundation pile from the bottom of the groove to the ground. (3) A concrete placing step in which a formwork is placed in the groove, and a reinforcing bar is arranged in the formwork to place a concrete material. (4) A pillar erecting step in which a footing provided with foundation piles is formed by curing and hardening the cast concrete material, and the pillar of the elevated traffic path is erected on this footing.

[0003]

However, the following problems exist in the conventional method of constructing the foundation of an elevated traffic route. In the (1) excavation process and (2) pile driving process, the excavator and the pile driver are placed around or on the traffic route to work, so it is necessary to restrict or stop the passage of existing vehicles. . Here, since structures such as houses are usually present on both sides of the traffic route, it is difficult to secure a wide range of work sites around the traffic route. In addition, it is difficult to secure a work site because the width of the traffic road is large enough for vehicles to pass through. Therefore, it is preferable to work during the stop time of the traffic route such as at night, but in the work of placing the foundation piles, large noise and vibration are generated and transmitted over a wide area, and especially at night work, there is an effect on neighboring residents. Since it will be large and the working time per day will be limited, the construction period will be prolonged and the traffic regulation of the traffic route will be prolonged. In addition, measures to prevent the inflow of groundwater will be required due to the lengthening of the excavation process and pile driving process.

In the (2) pile placing process and (3) concrete placing process, it is necessary to carry the foundation pile, the formwork and the reinforcing bar to the construction site and store them, and the storage site is around the traffic route or on the traffic route. It will affect the passage of vehicles on the traffic route. In addition, since work is performed in a narrow construction site, work efficiency is reduced.

In the (3) concrete pouring process and (4) prop standing process, it is difficult to pour and cure the concrete material forming the footing in rainy weather, and the work progress is hindered by the weather. The construction period will be extended. Furthermore, in curing concrete materials, it is necessary to cover the exposed surface with cloth, sand, etc. to keep the wet condition by sprinkling water, in order to prevent cracking that occurs in the concrete material due to drying. It was complicated. Further, since the construction work is interrupted during the curing period of the concrete material, the construction period is prolonged.

[0006] Therefore, in the conventional foundation of the elevated traffic route, it is necessary to significantly restrict the passage of vehicles on the existing traffic route, and the construction period is prolonged, so that a detour is provided around the traffic route. There is a need. As a result, the impact on the environment and economic activities of the surrounding local community becomes large, making it difficult to carry out construction and causing a significant delay in urban development.

Therefore, in the present invention, when constructing the foundation of a structure such as an elevated traffic route, the concrete material is not set and cured at the construction site, and even if it is a narrow construction site, it can be done in a short period of time. It is an object of the present invention to provide a foundation construction method and footing foundation and an elevated traffic route foundation structure that significantly reduce the impact on the environment and economic activities of the surrounding community by constructing the foundation.

[0008]

The present invention is configured to solve the above problems, and the invention according to claim 1 is a method for constructing a foundation, comprising: (1) precast of a plurality of reinforced concretes. The method is characterized by including a precast member installation step of installing members and (2) a footing forming step of integrating precast members with a tension material to form footing.

Further, the invention according to claim 8 is a footing foundation, which is characterized in that it is formed by integrating a precast member of reinforced concrete with a tension material.

Here, the precast member is a reinforced concrete member which is previously formed in a factory or the like. Further, the unification of the divided precast members means that both ends of a tension member, which is a PC steel material such as a PC steel wire or a PC steel rod penetrated into the precast member, is fixed to the precast member, and the tension member is tensioned. This is a so-called post-tensioning method of applying force.

According to the first and eighth aspects of the invention, since the footing is formed by the precast member, it is not necessary to pour and cure the concrete material on site, and the construction work on site is simplified. From being
The foundation can be built easily and in a short time. Also,
The footing, which is a precast member, can be easily carried into the construction site and placed at a predetermined position to construct the foundation, so that foundations of various shapes can be constructed in a short period of time. Further, since the precast member is formed of reinforced concrete, it is possible to reliably perform reinforcement bar arrangement and concrete material placement in a factory or the like.
Moreover, since the precast member is integrated by applying a tension force to the tension material, the integration work is simplified, and the integration can be achieved in a short time even in a narrow construction site.

The invention described in claim 2 is the same as claim 1.
The method for constructing a foundation described in 1. is characterized in that a connecting beam made of a reinforced concrete precast member is provided between the footings, and the footing and the connecting beam are integrated by a tension member.

Further, the invention according to claim 9 is the footing foundation according to claim 8, wherein a connecting beam made of a reinforced concrete precast member provided between the footings is integrated by the footing and the tension member. It is characterized by being.

Here, the integration of the footing and the connecting beam means that the PC steel wire or P which penetrates the inside of the footing and the connecting beam.
This is a so-called post-tensioning method in which both ends of a tension material, which is a PC steel material such as a C steel rod, is fixed to footing and a tension force is applied to the tension material. Further, the connecting beam may be composed of a plurality of precast members and integrated by a post tension method.

According to the second and ninth aspects of the present invention, by connecting the footings to each other by the connecting beam,
Since the load related to the footing is distributed to the plurality of footings, the plane dimension of the footing can be reduced.
Further, since the footing and the connecting beam are integrated by applying a tension force to the tension material, the work of integration is simplified, and even a narrow construction site can be integrated in a short time.

The invention described in claim 3 is the same as claim 1
Alternatively, the foundation building method according to claim 2, wherein a hole into which the foundation pile is fitted is formed in the footing, and the foundation pile is driven into the ground by penetrating the hole. .

Further, the invention according to claim 10 is the footing foundation according to claim 8 or 9, wherein the footing has a hole penetrating the footing, and the foundation pile is provided in the hole. It is characterized by being fitted.

According to the third and tenth aspects of the present invention, after the structure is constructed on the footing, the foundation pile can be provided on the footing immediately below the structure.
For example, a foundation pile can be provided in the footing while using the structure. As a result, the stability of the structure can be further enhanced without affecting the environment and economic activities of the surrounding community.

The invention described in claim 4 is the same as that of claim 1.
The method for constructing a foundation according to any one of claims 1 to 3, wherein the footing is provided with a lower support column for fixing the support column.

Further, the invention according to claim 11 is the footing foundation according to any one of claims 8 to 10, wherein the footing is provided with a lower support for fixing the support. It is characterized by

According to the inventions of claim 4 and claim 11, when a footing is formed in a factory or the like, a lower pillar for fixing the pillar is provided in advance, so that the anchor of the pillar is attached to the footing at the construction site. Since it is not necessary to drive the bolts, it is possible to erect the pillars in the footing in a short period of time even on a narrow construction site.

The invention described in claim 5 is the same as claim 1.
Alternatively, in the foundation building method according to claim 2, in the precast member installation step, the precast member is installed at a predetermined position along the traffic path, and after the footing forming step, the pillar of the elevated traffic path is attached to the footing. It is characterized in that it includes a step of standing upright columns.

Here, the term "traffic route" refers to various types of transportation such as roads and railroad tracks, and passages such as sidewalks.

According to the fifth aspect of the present invention, since the footing is formed of the precast member, the foundation construction of the elevated traffic route can be simplified, so that the foundation of the elevated traffic route can be easily and in a short period of time. It is possible to build up and secure the passage of vehicles in the work section at an early stage by the elevated traffic route. Further, in the configuration in which the connecting beam is provided between the footings, the load related to the footings is distributed to the plurality of footings, and the plane dimension of the footings can be reduced. Therefore, the traffic regulation when installing the footings should be reduced. You can

The invention described in claim 6 is the same as claim 5
The method for constructing a foundation according to 1, wherein the footing is formed with a hole into which a foundation pile is fitted, and after the pillar erecting step, the hole is penetrated to drive the foundation pile into the ground. Is characterized by.

According to the sixth aspect of the present invention, after the pillars of the elevated traffic passage are erected in the footing and the elevated traffic passage is constructed to ensure the passage of vehicles, the road surface of the elevated traffic passage is Since it is possible to install foundation piles directly under the footing,
The stability of the elevated road can be further enhanced without affecting the traffic of the vehicle.

The invention described in claim 7 is the same as claim 5
Alternatively, the foundation building method according to claim 6 is characterized in that the footing is provided with a lower column, and the column is fixed to the lower column in the column standing step.

According to the invention as set forth in claim 7, since it is not necessary to drive the anchor bolts of the support pillar to the footing at the construction site, the support pillar can be erected in the footing in a short period even on a narrow construction site. Therefore, the foundation of the elevated transportation route can be constructed in a short period of time.

The invention according to a twelfth aspect is a foundation structure of an elevated traffic route, wherein the footing foundation according to any one of the eighth to eleventh aspects is provided with a pillar of the elevated traffic route. Is erected.

According to the twelfth aspect of the present invention, since the pillars are erected on the footing foundation that is easily and quickly constructed to form the elevated traffic path, the elevated traffic path is constructed in a short time. However, it is possible to ensure early passage of vehicles in the work section.

Therefore, in the foundation construction method, footing foundation and elevated traffic route foundation structure of the present invention, since the precast member with high forming accuracy is easily carried into the construction site and integrated, it is widely used. The foundation can be constructed in a short period of time without securing the construction site. When installing foundation piles, the foundation piles can be installed in the footing after constructing the structure on the footing, reducing the impact on the environment and economic activities of the surrounding community and shortening the construction period. Then
Construction costs can be reduced. In addition, when applied to the foundation of an elevated traffic route, even if it is a narrow construction site, it will be possible to construct an elevated traffic route in a short period of time without constructing a detour around the traffic route. Traffic can be secured at an early stage, and if a foundation pile is to be installed, it can be provided to existing traffic because the foundation pile can be installed directly under the elevated traffic road after the construction of the elevated traffic road. It is possible to enhance the stability of the elevated traffic route while reducing the influence.

[0032]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The same elements will be denoted by the same reference symbols, without redundant description.

The foundation building method and footing foundation and the elevated traffic road foundation structure according to the embodiment of the present invention can be applied to the foundations of various structures. A case where the intersection is three-dimensionalized by providing an elevated road will be described as an example. Since there are structures such as houses on both sides of the road, it is difficult to secure a wide construction site around the road, and it is necessary to construct the foundation of the elevated road with a narrow construction site. is there.

[First Embodiment] First, the foundation of an elevated road according to a first embodiment of the present invention will be described. Figure 1
FIG. 3 is a perspective view showing footing according to the first embodiment of the present invention. FIG. 2 is a view showing a footing according to the first embodiment of the present invention, (a) is a side view of the footing,
(B) is a plan view of the footing, and (c) is a side view of the footing provided with a lower column.

First, the structure of the foundation of the elevated road according to the first embodiment of the present invention will be described. Footing 1 is shown in Figure 1.
As shown in FIGS. 2 (a) and 2 (b), the pillar 4 of the elevated road
A core segment 2 that is a rectangular parallelepiped precast member formed in advance in a factory or the like, and side segments 3 and 3 that are two rectangular parallelepiped precast members arranged on both sides of the core segment 2. Is
The core segment 2 and the side segments 3 and 3 are integrated by a post tension method using a PC steel material 9 such as a PC steel wire or a PC steel rod.

The core segment 2 has a structure as shown in FIG. 1, FIG.
As shown in (b), the post 4 is a reinforced concrete precast member that is erected, and has a plurality of horizontal holes 5 penetrating perpendicularly to the joint surface that joins the side segment 3. A bonding agent such as an epoxy resin for fixing the side segment 3 is applied to the bonding surface, and a plurality of concave grooves 6 are provided on the bonding surface. By fitting the concave groove 6 into a convex groove 7 provided on the joint surface of the side segment 3 described later, a cotter for preventing the core segment 2 and the side segment 3 from shifting is formed.

The side segment 3 is shown in FIGS.
As shown in (a) and (b), it is a precast member made of reinforced concrete that increases stability of the footing 1 by being integrated with the core segment 2, and is a horizontal hole that communicates with the horizontal hole 5 of the core segment 2. A plurality of grooves 8 are provided perpendicularly to the joint surface that joins the core segment 2, and a plurality of convex grooves 7 that fit into the concave grooves 6 of the core segment 2 are provided.

The shape of the core segment 2 and the side segment 3 is not limited to a rectangular parallelepiped, as long as the pillar 4 can be stably supported when the footing 1 is formed. Furthermore, the number of horizontal holes 5 and 8 provided in the joint surface of the core segment 2 and the side segments 3 and 3 is the same as that of the PC steel wire or PC steel rod required for integrating the core segment 2 and the side segments 3 and 3. Such as P
It depends on the number of C steel materials 9. And PC steel wire and PC
The number of PC steel materials 9 such as steel rods is appropriately determined by the load applied to the footing 1. In addition, the grooves 6 and 7 provided on the joint surface between the core segment 2 and the side segments 3 and 3.
The shape and number of the core segment 2 and the side segments 3 and 3 are not limited as long as they are surely prevented from being displaced from each other. The grooves 6 and 7 may not be provided as long as the core segment 2 and the side segments 3 and 3 are not displaced from each other.

Next, a method of constructing an elevated road foundation according to the first embodiment of the present invention will be described. First, in the (1) precast member installation step, as shown in FIG.
As shown in (b), core segments 2 and side segments 3 and 3 whose joint surfaces are coated with epoxy resin are installed in excavation trenches excavated on both sides of the road. At this time, since the core segment 2 and the side segment 3 are small members and have a reduced weight, they can be easily carried into a narrow construction site.

In the footing forming step (2), as shown in FIGS. 1, 2 (a) and 2 (b), PC steel wire or PC steel is inserted into the horizontal holes 5 and 8 of the communicating segments 2 and 3, respectively. The PC steel material 9 such as a rod is penetrated to form a P steel wire such as a PC steel wire or a PC steel rod.
Both ends of the C steel material 9 are fixed to the wall surfaces of the side segments 3 and 3 with the fixing tool 11 via the pressure bearing plate 10. Next, PC
By tensioning the PC steel material 9 such as a steel wire or a PC steel rod with a jack or the like, a tension force is applied to the PC steel material 9 such as a PC steel wire or a PC steel rod, and the core segment 2 and the side segment 3 are post-tensioned. Unify. The pressure support plate 10 applies pressure from the fixing device 11 to the side segments 3, 3
It is a plate-shaped member that disperses and transmits to the wall surface of.

Furthermore, in the step (3) of standing up the support columns, as shown in FIG.
As shown in FIGS. 2A and 2B, a footing 1 formed by a core segment 2 and side segments 3 and 3
Anchor bolts of the support columns 4 are driven to the bases, and the support columns 4 are fixed to the anchor bolts, whereby the support columns 4 are erected on the footing 1.

Here, as another configuration of the core segment 2, as shown in FIG. 2 (c), when the core segment 2 is formed in a factory or the like, a lower column 12 for fixing the column 4 is provided. is there. In this configuration, by fixing the support pillars 4 to the anchor bolts 13 arranged on the lower support pillars 12, it is not necessary to provide the anchor bolts of the support pillars 4 on the footing 1 at the construction site, so that even in a narrow construction site, The pillar 4 can be erected on the core segment 2 in a short period of time.

Therefore, in the foundation of the elevated road according to the first embodiment of the present invention, the precast member is integrated to form the footing 1, so that it is not necessary to pour concrete material for curing at the construction site. Therefore, the foundation of the elevated road can be easily constructed in a short period of time. Further, when forming the footing 1 by integrating the precast members, it is not necessary to secure a wide construction site, so that the foundation of the elevated road can be easily constructed even if the construction site is narrow.

[Second Embodiment] Next, the foundation of an elevated road according to a second embodiment of the present invention will be described. Figure 3
[Fig. 4] is a view showing a foundation of an elevated road according to a second embodiment of the present invention, (a) is a front view of the foundation, and (b) is a plan view of the foundation. FIG. 4 is a diagram showing another configuration of the connecting beam,
(A) is a front view of a connecting beam having a groove, (b) is a plan view of a connecting beam having a groove, and (c) is a sectional view taken along line AA. Figure 5
Is a view showing another configuration of the connecting beam, (a) is a front view of the connecting beam in which the end portion of the PC steel wire is fixed on the upper surface, and (b) is P
FIG. 3 is an enlarged view of the fixing portion of the C steel wire, and (c) is a front view of a connecting beam formed in an arch shape.

The foundation of the elevated road according to the second embodiment of the present invention has a structure in which a connecting beam 14 is provided between the plurality of footings 1 constructed in the first embodiment. It is assumed that the footing 1 is constructed by the elevated road foundation construction method according to the first embodiment.

First, the components of the foundation of the elevated road according to the second embodiment of the present invention will be described. The connecting beam 14 is provided between the footings 1 and is composed of a plurality of divided connecting beams 15 which are precast members made of reinforced concrete. Here, the connecting beam 14 is
If the size and weight make it easy to carry into the construction site, the connecting beam 14 may be configured as a single unit without being configured by the divided connecting beam 15. A plurality of horizontal holes 16 penetrates the divided connecting beam 15 perpendicularly to the joint surface with the adjacent divided connecting beam 15, and the horizontal holes 16 of each divided connecting beam 15 communicate with each other. It is arranged to.

Next, a method of constructing an elevated road foundation according to the second embodiment of the present invention will be described. After the footing forming step (2) in the first embodiment, the footing 1
A plurality of divided connecting beams 15 are arranged between each other. In addition, in the second embodiment, in the footing 1, the horizontal hole 1 is provided at a position communicating with the horizontal hole 16 of the divided connecting beam 15.
7 is penetrated. Next, a PC steel material 18 such as a PC steel wire or a PC steel rod is passed through the horizontal hole 16 of each of the divided connecting beams and the horizontal hole 17 of the footing 1, and the PC steel material 18 such as a PC steel wire or a PC steel rod 18 is penetrated. Both ends of are fixed to the wall surface of the footing 1 by the fixing tool 11 via the pressure bearing plate 10. In addition, PC
By tensioning the PC steel material 18 such as a steel wire or a PC steel rod with a jack or the like, a tension force is applied to the PC steel material 18 such as a PC steel wire or a PC steel rod, and the connecting beam 15 divided by the post-tension method is used. Integrate footing 1. Further, similarly to the first embodiment, (3) the pillar upright step is performed to vertically install the pillar 4 on the footing 1. In addition, the connecting beam 1 which was divided
The 5 and the footing 1 may be integrated before (2) the footing forming step or (3) after the pillar standing step, and can be appropriately performed at a suitable time according to the construction situation.

The connecting beam 14 is not limited to the configuration provided between the pair of footings 1 in the width direction of the road, but may be provided in the longitudinal direction of the road or the diagonal lines of the footings 1 arranged in four directions. It may be provided above, and is determined for each construction site depending on the load of the elevated road, the ground strength, and the like.

As another configuration of the connecting beam 14, as shown in FIG. 4, when the connecting beam 14 is formed in a factory or the like, a concave groove 19 is formed in the longitudinal direction of the connecting beam 14, A turnbuckle 20 is provided in the center of the groove 19, a PC steel material 18 such as a PC steel wire or a PC steel rod having a threaded end is arranged, and the turnbuckle 20 is tightened to tighten the PC steel wire or the PC steel rod. There is also a configuration in which tension is applied to the PC steel material 18 such as. In this configuration, since the PC steel material 18 such as the PC steel wire or the PC steel rod is inserted into the connecting beam 14 from above the connecting beam 14 and the tension force is applied at the center of the connecting beam 14, in particular, the footing 1 The work of integrating the footing 1 and the connecting beam 14 in the construction site where the space around the is small is simplified. In addition, after applying tension to the PC steel material 18 such as the PC steel wire or the PC steel rod, the grout material 21 is placed in the groove 19.
And a PC steel material 18 such as a PC steel wire or a PC steel rod is fixed inside the connecting beam 14.

Further, as another structure of the connecting beam 14,
As shown in FIGS. 5A and 5B, one footing 1
PC steel wire 22 fixed on the wall surface of the other and footing 1 of the other
There is a configuration in which the PC steel wires 23 fixed to the wall surface are crossed inside the connecting beam 14 and the ends of the PC steel wires 22 and 23 are fixed to the upper surface of the connecting beam 14. In this configuration, since the fixing tool 11 is tightened on the upper surface of the connecting beam 14, in particular, the footing 1
The footing 1 and the connecting beam 14 can be integrated in a short time even on a construction site in which the space around is narrow.
Note that FIG. 5B shows the fixing portion of the PC steel wire 23 on the upper surface of the connecting beam 14, and the fixing tool 11 interposes the bearing plate 10 and the fixing plate 24 that are inclined and fixed on the upper surface of the connecting beam 14. It is fixed on the upper surface of the connecting beam 14 in a stable state.

As another structure of the connecting beam, as shown in FIG.
As shown in (c), there is a configuration in which the entire connecting beam 14 is warped downward. In this configuration, the ground reaction force is dispersed in the axial force of the connecting beam 14, so that Since the bending moment is reduced and the cross-sectional area of the connecting beam 14 can be reduced, the divided connecting beam 15 becomes smaller and lighter.

Therefore, in the foundation of the elevated road according to the second embodiment of the present invention, the footings 1 are connected by the connecting beams 14.
Since the load related to the footing 1 is distributed to the plurality of footing 1 by connecting the, the planar size of each footing 1 can be reduced. In addition, footing 1
Since it is not necessary to secure a wide construction site when integrating the connecting beam 14 and the connecting beam 14, the connecting beam 14 can be provided between the footings 1 in a short period of time even if the construction site is narrow.

[Third Embodiment] Next, the foundation of an elevated road according to a third embodiment of the present invention will be described. Figure 6
[Fig. 4] is a view showing a foundation of an elevated road according to a third embodiment of the present invention, (a) is a front view of a connecting beam, and (b) is a side view of a footing.

The elevated road foundation according to the third embodiment of the present invention has substantially the same structure as that of the second embodiment, and uses a core segment 2 having a deformed shape and a divided connecting beam 25. Only that thing is different. This deformed tie beam 2
As shown in FIG. 6A, 5 is arranged in the center of the connecting beam 14 and is deformed into a shape in which the area of the lower surface is smaller than the area of the upper surface. Thus, when the divided connecting beams 15 and 25 are installed, the deformed connecting beam 25 is finally inserted between the divided connecting beams 15 and 15 so that the divided connecting beams 15 and 15 are inserted. The connecting beam 14 can be easily and surely installed without providing a space between them. The deformed connecting beam 25 may have a semicircular elliptical shape or an uneven shape, and is not limited as long as it can be easily inserted between the divided connecting beams 15. .

Further, as shown in FIG. 6 (b), the core segment 2 of the footing 1 is also deformed in the same manner as the deformed connecting beam 25, so that the core segment 2 is easily and securely arranged between the side segments 3 and 3. It is possible to reliably transmit the tension force of the PC steel material 9 such as the PC steel wire or the PC steel rod by inserting the PC steel material into the PC and integrating them. The deformed core segment 2 may also have a semicircular elliptical shape or an uneven shape, and is not limited as long as it can be easily inserted between the side segments 3 and 3.

Therefore, in the elevated road foundation according to the third embodiment of the present invention, the footing 1 and the connecting beam 14 can be easily and surely integrated without increasing the work steps at the construction site.

[Fourth Embodiment] Next, the foundation of an elevated road according to a fourth embodiment of the present invention will be described. Figure 7
[FIG. 6] is a view showing a footing according to a fourth embodiment of the present invention, (a) is a side view of a footing having vertical holes,
(B) is a plan view of a footing in which vertical holes are formed.

The foundation of the elevated road according to the fourth embodiment of the present invention has substantially the same structure as that of the first, second and third embodiments. As shown in FIG. 3 is provided with a vertical hole 27 into which a foundation pile 26 is fitted. That is, when forming the side segment 3 in a factory or the like, the side segment 3
A vertical hole 27 is formed so as to pass through, and (3) after the pillar standing step, the vertical hole 27 is passed through and the foundation pile 26 is driven into the ground.

Therefore, in the foundation of the elevated road according to the fourth embodiment of the present invention, after the pillars 4 of the elevated road are erected on the footing 1 to construct the elevated road, the foundation pile 26 is attached to the footing 1. Since the vehicle can be provided, the foundation pile 26 can be provided immediately below the road surface of the elevated road after ensuring the passage of the vehicle by the elevated road.

An example of the preferred embodiment of the present invention has been described above. However, the present invention is not limited to the embodiment, and design changes can be appropriately made without departing from the spirit of the present invention.

For example, the footings according to the first, second, third, and fourth embodiments may be used to form the foundation of structures such as buildings and cranes. 8A and 8B are views showing a foundation of a structure according to an embodiment of the present invention, FIG. 8A is a perspective view showing a solid foundation, FIG. 8B is a perspective view showing a continuous footing foundation, and FIG. FIG. 3D is a perspective view showing an independent footing foundation, and FIG. 3D is a perspective view showing a structure in which a connecting beam is provided on the independent footing foundation. FIG. 9 is a view showing a foundation of a structure according to the embodiment of the present invention, and is a perspective view showing a case where a building is constructed on the upper surface of a solid foundation.
FIG. 10 is a view showing a foundation of a structure according to the embodiment of the present invention, and is a side view showing a case where a tower crane is installed on an upper surface of a solid foundation. FIG. 11 is a view showing a foundation of a structure according to the embodiment of the present invention, and is a perspective view showing a case where a portal crane is installed on the upper surface of the continuous footing foundation.

First, as shown in FIG. 8 (a), the solid foundation 1a comprises a plurality of segments 2a which are continuously installed vertically and horizontally, and adjacent segments 2a are made of PC steel material such as PC steel wire or PC steel rod. Since the segments 2a, which are precast members, can be easily carried in, the solid foundation 1a having a wide range of upper surfaces can be easily constructed. Further, since the segment 2a is formed with high precision, the flatness of the upper surface thereof is enhanced, so that various structures can be stably supported. 9 is a perspective view showing a case where the building B is constructed on the solid foundation 1a, and FIG. 10 is a side view showing a case where the tower crane T is installed on the solid foundation 1a. In addition, the continuous footing foundation 1b, as shown in FIG.
Are arranged continuously, and each segment 2a is connected to PC steel wire or PC.
It is formed by integrating with a PC steel material 9 such as a steel rod. FIG. 11 is a view showing the foundation of the portal crane M using the continuous footing foundation 1d, in which a plurality of continuously arranged segments 2a are integrated, and the rail R of the portal crane M is provided on the upper surface thereof. It is installed.

Further, the independent footing foundation 1c is shown in FIG.
As shown in (c), a plurality of segments 2a are integrally formed with a PC steel material 9 such as a PC steel wire or a PC steel rod, and the plurality of independent footing foundations 1c are adapted to the weight distribution of the structure. By arranging them at predetermined intervals, the structure is supported in a stable state. Further, as shown in FIG. 8D, the connecting beam 14 is provided between the independent footing foundations 1c.
In this configuration, since the load applied to each independent footing foundation 1c is dispersed by the connecting beam 14, the plane size of the independent footing foundation 1c can be reduced.

Therefore, in the foundation of the structure according to the embodiment of the present invention, the segment 2a which is the precast member is used.
By easily carrying in and arranging, it is possible to construct foundations of various shapes in a short period of time, and thus it is possible to construct foundations corresponding to various structures in a short period of time. Furthermore, since the segment 2a that is the precast member has high formation accuracy, the structure built on the upper surface of the foundation can be reliably stabilized.

[0065]

Therefore, in the foundation construction method and footing foundation and the elevated traffic road foundation structure of the present invention, a footing formed by integrally forming precast members with high formation accuracy without requiring a wide range of construction sites. Based on the above, it is possible to construct an elevated traffic route in a short period of time and quickly secure passage of vehicles in a work section without providing a detour even in a narrow construction site. As a result, it is possible to reduce the influence on the existing traffic, reduce the influence on the environment and economic activities of the surrounding community, shorten the construction period, and reduce the construction cost. In addition, since the footing, which is a precast member, can be easily carried into the construction site and placed at a predetermined position to construct the foundation, it is possible to construct foundations of various shapes in a short period of time. In addition, the footing and the connecting beam are integrated to connect the footings together, and the load related to the footings is distributed to multiple footings without the need for a wide range of construction sites. can do. In addition, with the structure in which the foundation piles are provided, it is possible to install the foundation piles in the footing after the construction of the elevated traffic road, so even if the construction site is narrow, existing traffic will not be affected and The stability can be increased.

[Brief description of drawings]

FIG. 1 is a perspective view showing a footing according to a first embodiment of the present invention.

2A and 2B are views showing a footing according to the first embodiment of the present invention, in which FIG. 2A is a side view of the footing, FIG. 2B is a plan view of the footing, and FIG. It is a figure.

FIG. 3 is a diagram showing a foundation of an elevated road according to a second embodiment of the present invention, (a) is a front view of the foundation, and (b) is a plan view of the foundation.

4A and 4B are views showing another configuration of the connecting beam, FIG. 4A is a front view of the connecting beam having a groove, FIG. 4B is a plan view of the connecting beam having a groove, and FIG. It is a figure.

FIG. 5 is a diagram showing another configuration of the connecting beam, in which (a) is a PC.
A front view of a connecting beam in which the end of the steel wire is fixed on the upper surface,
(B) is an enlarged view of a fixing portion of a PC steel wire, and (c) is a front view of a connecting beam formed in an arch shape.

FIG. 6 is a view showing a foundation of an elevated road according to a third embodiment of the present invention, (a) is a front view of a connecting beam, and (b) is a side view of a footing.

FIG. 7 is a view showing a footing according to a fourth embodiment of the present invention, (a) is a side view of the footing having vertical holes,
(B) is a plan view of a footing in which vertical holes are formed.

8A and 8B are views showing a foundation of a structure according to an embodiment of the present invention, FIG. 8A is a perspective view showing a solid foundation, FIG. 8B is a perspective view showing a continuous footing foundation, and FIG. FIG. 3D is a perspective view showing an independent footing foundation, and FIG. 3D is a perspective view showing a structure in which a connecting beam is provided on the independent footing foundation.

FIG. 9 is a view showing a foundation of a structure according to an embodiment of the present invention, and is a perspective view showing a case where a building is constructed on an upper surface of a solid foundation.

FIG. 10 is a view showing a foundation of a structure according to an embodiment of the present invention, and is a side view showing a case where a tower crane is installed on an upper surface of a solid foundation.

FIG. 11 is a view showing a foundation of a structure according to an embodiment of the present invention, and is a perspective view showing a case where a portal crane is installed on an upper surface of a continuous footing foundation.

[Explanation of symbols]

1 ... Footing 2 ... Core segment 3 ... Side segment 4 .... Stuts 5 ... Horizontal hole (core segment) 6 ... Recessed groove (core segment) 7 ... Convex groove (side segment) 9 ... PC steel (footing) 12 ... Lower prop 14 ... ・ Joint beams 15 ··· Split beam 18 ... PC steel material (joint beam) 19 ... ・ Groove (joint beam) 22 ... PC steel wire (joint beam) 23 ... PC steel wire (joint beam) 25 ··· Deformed connecting beam 26 ... Foundation piles 27 ... Vertical holes 1a ... Solid basic 1b ... ・ Continuous footing basics 1c ... Independent footing basics 2a ... ・ Segment

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Kotaro Kobayashi             1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei             Construction Co., Ltd. (72) Inventor Mitsuhiko Ota             1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei             Construction Co., Ltd. (72) Inventor Osamu Takagi             1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei             Construction Co., Ltd. (72) Inventor Osamu Sakamoto             1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei             Construction Co., Ltd. (72) Inventor Masaru Tada             1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei             Construction Co., Ltd. (72) Inventor Toshihide Shiraishi             1-25-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo Taisei             Construction Co., Ltd. F-term (reference) 2D046 BA22 BA26 BA27                 2E125 AA03 AA13 AA45 AA46 AC02                       AE02 AG03 AG12 AG22 BB08                       CA06 EA01

Claims (12)

[Claims] 1. A foundation construction method comprising the following steps. (1) Precast member installation step of installing a plurality of reinforced concrete precast members. (2) A footing forming step of forming a footing by integrating the precast members with a tension material. 2. The foundation building method according to claim 1, wherein a connecting beam made of a reinforced concrete precast member is provided between the footings, and the footing and the connecting beam are integrated by a tension member. 3. The footing is formed with a hole into which a foundation pile is fitted, and the foundation pile is driven into the ground by penetrating the hole. Two
Basic construction method described in. 4. The foundation building method according to claim 1, wherein the footing is provided with a lower support for fixing the support. 5. A pillar stand that installs the precast member at a predetermined position along a traffic path in the precast member installation step, and erects a pillar of an elevated traffic path in the footing after the footing forming step. The foundation construction method according to claim 1, further comprising an installation step. 6. The footing is formed with a hole into which a foundation pile is fitted, and the foundation pile is driven into the ground by penetrating the hole after the pillar standing step. The foundation construction method according to claim 5. 7. The foundation construction according to claim 5, wherein the footing is provided with a lower strut, and the strut is fixed to the lower strut in the strut standing step. Method. 8. A footing foundation formed by integrating a precast member of reinforced concrete with a tension material. 9. The footing foundation according to claim 8, wherein a connecting beam made of a reinforced concrete precast member provided between the footings is integrated with the footing by a tension member. 10. The footing foundation according to claim 8 or 9, wherein a hole penetrating the footing is formed in the footing, and a foundation pile is fitted in the hole. . 11. The footing foundation according to claim 8, wherein the footing is provided with a lower strut for fixing the strut. 12. The method according to any one of claims 8 to 11.
The foundation structure of the elevated traffic route, wherein the footing foundation described in the item (1) is provided with uprights of the elevated traffic route.