JPS6312161Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an overhanging sidewalk block used for constructing a sidewalk at the edge of an elevated road, for example.

Traditionally, in order to create a sidewalk along the edge of a road that runs through an irrigation canal or into a rice field, the irrigation canal or rice field had to be reclaimed. However, since sidewalks with this type of structure are created by reclaiming irrigation canals and rice fields, they require a lot of effort and expense, and moreover, the irrigation canals and the like become useless.

As a conventional method of constructing a sidewalk by overhanging the edge of an elevated road (roadway) that is built higher than the surrounding area without reclaiming irrigation canals, rice fields, etc., there is a structure shown in FIG. 1, for example. That is, a substantially frame-shaped concrete foundation block A, a concrete overhanging beam B placed and fixed on the top surface of the foundation block A, and a concrete overhanging beam B placed on the top surface of the foundation block A.
It is formed from anchor bolts C and D planted on the top surface of the foundation block A to be placed and fixed on the top surface.

To construct the sidewalk E, first, the soil at the edge of the roadway G is excavated to form an excavated portion F having a substantially L-shaped cross section. Next, concrete foundation blocks A are successively installed in parallel along the roadway G in this excavated portion F, and then fresh concrete H is poured into the foundation blocks A and hardened to provide several anchors.・Install bolts C and D.

Next, the overhanging beam B is placed on the top surface of the foundation block A, and then, after being positioned on the foundation block A within several bolt insertion holes J and K previously provided in the base I of the overhanging beam B. the anchor bolt C,
D is inserted, and fresh concrete O is poured into the bolt insertion holes J and K and hardened. Then, by screwing nuts onto the anchor bolts C and D through washers, the overhanging beam member B is fixed to the upper surface of the foundation block A. Furthermore, a sidewalk E was created by paving the surface plate part on one side of this overhanging crosspiece B with soil L and asphalt M and N that had been backfilled into the excavated part F.

However, in the conventional product shown in Fig. 1, the anchor bolts C and D are placed in the foundation block A on site by pouring the ready-mixed concrete H into the foundation block A. H
The installation work of anchor bolts C and D is time consuming, and the positioning of anchor bolts C and D must be measured and carried out, which is time consuming, and the installation positions of anchor bolts C and D are uneven for each foundation block A. Ta. Further, it was also time-consuming to attach the projecting beams B to the upper surfaces of the foundation blocks A that were arranged side by side along the roadway G. Therefore, this conventional product had the disadvantage that it took a long time to construct the sidewalk E.

Moreover, since the mounting positions of anchor bolts C and D installed in foundation block A to fix overhanging beam B on the top surface of foundation block A vary from foundation block A to foundation block A, overhanging beam B If the space between the two was placed at hand and several hundred meters away, the inside (roadside) and outside (sidewalk) sides would be uneven.

In addition, since foundation block A and overhanging block B are made of concrete and are heavy, overhanging block B overhangs outward from foundation block A. The load on material B becomes unstable, and the foundation block A is not fixed to the excavated part F, so the ground may loosen or external forces such as earth pressure, automobile vibrations, earthquakes, etc. may be applied. In addition, there were structural weaknesses such as the foundation block A and the overhanging beam B tilting when internal stress such as expansion of the ready-mixed concrete H cast and solidified between the legs was applied. Therefore, there are dimensional restrictions on the width of the basic block A used.

The present invention was developed in view of the above points, and its purpose is to create a sidewalk in a narrow space in a short construction period by integrally forming the foundation block and the overhanging beam. In addition, the spacing between the overhanging beams can be maintained at uniform intervals without causing unevenness between the inside and outside of the one at hand and the one placed at the other end, and it is also possible to lay the beams at uniform intervals. By increasing the ground contact area of the ready-mixed concrete to the excavated area and supporting the overhanging beams using supports, the foundation blocks can be firmly fixed to the excavated area without tilting or slipping, and the foundation blocks can be firmly fixed to the excavated area. To provide a structurally robust overhanging walkway block that can be connected to each other without breaking at connecting points.

The present invention will be explained below with reference to an embodiment shown in FIGS. 2 and 3.

1 is an elevated roadway with an irrigation canal running through the edge or through rice fields, and 2 is a sidewalk to be built at an elevated position on the edge of the roadway 1. Reference numeral 3 denotes an excavated portion having a substantially L-shaped cross section, which is formed by excavating the soil at the edge of the roadway 1 when constructing the sidewalk 2. 4 is a concrete foundation block, and this foundation block 4 has opposed leg parts 5, 5,
Two crosspieces 6 connect the lower inner sides between the leg parts 5, 5, and a tension member that connects the upper center of the leg parts 5, 5 and also serves as a connecting member extending outward. A connection space 4a having a substantially U-shaped planar shape provided at the joint end of the projecting beam 7 and the leg portions 5, 5;
4a.

Reference numeral 5a denotes an inclined wall surface formed on the opposing surface of the leg parts 5, 5 so that the width becomes narrower from above to below. Many holes are formed in the fresh concrete 1 when it is poured and hardened between the concrete parts 5 and 5.
By curing and hardening the fresh concrete 15 densely without being formed inside the base block 5, the foundation block 4 becomes heavier relative to the extension of the overhanging beam 7, lowering the center of gravity and lowering the center of gravity. Part 5, 5,
By making the thickness in the lower width direction thicker than the upper thickness, the foundation block 4 is stabilized without being tilted. Reference numeral 7a denotes a reinforcing beam for connecting the overhanging beams 7, 7 in parallel to the foundation blocks 4, so as to straddle the connection points between the foundation blocks 4 to be connected.

Reference numeral 8 denotes a surface plate with a ground cover 9 formed on one side, and this surface plate 8 connects the connecting points of adjacent foundation blocks 4, 4, which are installed in parallel when constructing the sidewalk 2, with overhanging beams 7,
The overhanging beams 7, 7 are provided approximately at the center above the individual foundation blocks 4, 4, and the overhanging beams 7, 7 are provided in parallel to the foundation blocks 4 so as to exert rigidity between the overhanging beams 7, 7. By being placed and solidified on the upper surface of the combined reinforcing beam 7a, the foundation blocks 4, 4
By dispersing the load applied to the foundation blocks 4, the load is not concentrated on the connection points between the foundation blocks 4.

Reference numeral 9a denotes a mounting hole provided in the ground cover 9 for mounting the guide fence 10. The lower end of the pillar 11 of the guide fence 10 is inserted into the mounting hole 9a, and the guide fence 10 is filled with concrete.
is installed. Reference numeral 12 denotes the overhanging beam 7 and reinforcing beams 7a connected from both sides thereof for reinforcement.
This is a support column that is erected and supports the lower surface of the joint end of 7a. Reference numeral 13 indicates a guide rail for constructing a sidewalk 2 of a desired width in accordance with the width of the surface board 8, and 14 indicates a support thereof.

One embodiment of the present invention has the above-mentioned configuration, and in order to create the sidewalk 2, first an excavation portion 3 having a substantially L-shaped cross section is formed at the edge of the roadway 1.

Next, a large number of foundation blocks 4 are placed in the excavation part 3 and placed in parallel along the roadway 1, and then the ready-mixed concrete 1
5 into the gap between the opposing leg parts 5, 5 of the foundation block 4, the opposing surfaces 5a, 5 of the leg parts 5, 5
A sloped wall surface 5 whose width becomes narrower from above to below.
a, 5a are formed, the ready-mixed concrete 15 falls onto the inclined wall surfaces 5a, 5a during pouring, is guided, cures, and solidifies densely without forming a large number of holes inside. The weight of the foundation block 4 is increased relative to the extension of the overhanging crosspiece 7, and the center of gravity can be lowered.Furthermore, the thickness of the lower part between the leg parts 5, 5 in the width direction is thicker than the upper part. and stabilize it. The lower inner sides of the opposing leg parts 5, 5 are connected by the two crosspieces 6, 6, increasing the ground contact area of the ready-mixed concrete 15 with respect to the excavated part 3, so that the foundation block 4 can be firmly attached to the excavated part. It can be fixed at 3. In this way, the overhanging beam 7 formed on the upper surface of the foundation block 4 is cantilevered and supported at the edge of the roadway 1. Thereafter, the gap in the excavated portion 3 is backfilled with soil 16.

Next, the overhanging beams 7, 7, which are successively laid and formed approximately midway above each other of the foundation blocks 4, are connected to the support columns 12.
A reinforcing bar 7a is supported by screwing a nut onto a bolt planted on the upper surface through a washer, and is connected to the supporting column 12 in parallel to the foundation block 4 between the overhanging bars 7, 7. By similarly supporting the joint ends of the overhanging beams 7, 7 using bolts, washers, nuts, etc., the tilting of the overhanging beams 7 can be prevented by supporting the support 1.
2 can be firmly supported and fixed, and reinforcement between the overhanging beams 7 and 7 is achieved by the reinforcing beams 7a and the struts 12 that support them.

Thereafter, the overhanging beams 7, 7 formed approximately at the center above the foundation block 4 to be connected, and the reinforcing beam 7a connected in parallel to the foundation block 4 between the overhanging beams 7, 7. A top plate 8 is fixed on the top surface. At this time, the surface plate 8 includes the overhanging beams 7, 7 located on both sides of the base block 4 with the connection point of the foundation block 4 in the middle, and the reinforcing beam 7a connected between the overhanging beams 7, 7. Because it is fixed on the top surface of
Ready-mixed concrete 15 poured and solidified between the leg parts 5, 5, reinforcing crosspiece 7 connected between the overhanging crosspieces 7, 7
It exerts stiffness in cooperation with a and provides strength at the connection points between the foundation blocks 4.

Thereafter, asphalt 17, 18 is paved on the soil 16 that has backfilled the excavated portion 3 and the upper surface of the surface plate 8, thereby creating a roadway 1 and a sidewalk 2.

Finally, the lower ends of the columns 11 are inserted into the mounting holes 9a of the ground covering 9 formed on one side of the surface plate 8, and concrete is filled and solidified to erect the columns 11 and form the guide fence 10. do. In the same way, a support post 14 is erected at a desired position on the roadway 1 side to provide a guide.
A rail 13 is formed.

In this way, a sidewalk of a desired width is created at the edge of the roadway 1.

In the above embodiment, the foundation block 4 is provided with one projecting beam 7 and two beams 6, but the number is not limited to this and may be selected in consideration of structural strength. .

As described above, the present invention connects the opposing leg parts at the inner lower part with a plurality of crosspieces, and also connects the upper part between the leg parts by an overhanging crosspiece which also serves as a connecting member and extends outward. The connecting ends of the leg parts are connected together to form a foundation block with a substantially U-shaped connection space at each connection end, and the overhanging beams of this foundation block and the overhanging beams are connected to each other. The connecting ends of the reinforcing beams connected parallel to the foundation blocks are supported by supports, and the connection points between the foundation blocks are located in the middle of the overhanging beams of adjacent foundation blocks. Since the structure has a surface plate fixed to the upper surfaces of the beams and reinforcing beams using appropriate fixing means, the ground contact area of the ready-mixed concrete poured between the legs of the foundation block with respect to the excavation area is increased, and the foundation block is easily attached to the excavation area. In addition, the connecting ends of the overhanging crosspieces and the reinforcing crosspieces that connect the overhanging crosspieces can be supported and fixed by the pillars. Furthermore, a surface plate is attached to the upper surface of the overhanging beam and the reinforcing beam so that the connecting points between the foundation blocks are in the middle and the overhanging beams provided on each foundation block are positioned on both sides thereof. Because it was fixed by means,
Against internal stresses such as loosening of the ground in the excavation area, application of earth pressure, external forces such as vibration, driving of automobiles, and earthquakes, and expansion of ready-mixed concrete placed between the leg parts. The foundation blocks can be firmly fixed without slipping or tilting from the excavated part, and in particular, the foundation blocks can be structurally connected to each other without the risk of breakage or the like. In this way, unlike conventional methods, it takes time and effort to lay the formwork, pour fresh concrete into the foundation block, harden it, and install anchor bolts, positioning work required for this, and even more overhanging the foundation block. Since the installation work of the beams is omitted, the construction period is shortened and the construction cost is reduced.

In addition, since the overhanging beams are formed on the top surface of the foundation blocks, just by arranging the foundation blocks side by side along the elevated roadway, the gap between the overhanging beams at the front and the front can be made uniform on the inside and outside. Therefore, a sidewalk of desired width can be constructed along the roadway. Moreover, since the foundation block itself is formed into a rigid frame structure in which the opposing leg parts are connected by a plurality of crosspieces and overhanging crosspieces, the structure is strong, lightweight, and easy to transport.

[Brief explanation of drawings]

Fig. 1 is a sectional view showing a conventional overhanging walkway block in its installed state, Fig. 2 is an exploded slope view showing an embodiment of the present invention, and Fig. 3 is a sectional view showing the same state in use. . 1... Roadway, 2... Sidewalk, 3... Excavation section, 4... Foundation block, 5... Leg section, 6... Crosspiece, 7... Overhanging crosspiece,
8...Surface plate.

Claims (1)

[Scope of utility model registration request] Opposing leg parts, a plurality of crosspieces that connect the inner lower parts between the leg parts, an overhanging crosspiece that connects the upper parts of the leg parts and extends outward and also serves as a connecting member, and the legs. A foundation block formed from a generally U-shaped connection space provided at a connection end between the material parts, and a connection between the overhanging crosspiece and the overhanging crosspiece in parallel to the foundation block. A column that supports the connecting end of the reinforcing bar and a connection point between the foundation block is located in the middle between the overhanging bars, and is fixed to the upper surface of the overhanging bar and the reinforcing bar by appropriate fixing means. A concrete overhanging sidewalk block formed from a sidewalk surface board.