JPS6250601B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present application relates to an overhanging walkway block to be laid, for example, at the edge of an elevated walkway, and a method for constructing the same.

Previously, in order to create a sidewalk along the edge of a road where an irrigation canal flows through the edge of a rice field, it was necessary to fill in the irrigation canal or rice field. 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 method of constructing a sidewalk by extending it from the edge of an elevated walkway (roadway) that is formed higher than the surrounding area without reclaiming irrigation canals, rice fields, etc., there is a conventional method, such as the structure shown in FIG. 1, for example. First, foundation block A is formed by pouring fresh concrete on site.
, an overhanging crosspiece B made of concrete that is placed and fixed on the upper surface of the foundation block A, and an overhanging crosspiece B made of concrete that is placed and fixed on the upper surface of the foundation block A; It is formed from anchor bolts C and D implanted in.

The case of creating sidewalk E will be described below with reference to Figure 2.

First, the top of the edge of the roadway F is excavated to form an excavated portion G having a substantially L-shaped cross section. Next, formworks H and H are erected facing each other in this excavation part G, and the formworks H,
If necessary, several main reinforcements I extending in the longitudinal direction are laid within H, and rib reinforcements J are placed perpendicular to the main reinforcements I. Then, ready-mixed concrete N is poured into the formworks H and H. After setting and solidifying, several anchor bolts C and D are implanted, and after curing, the formwork H and H are removed to form the foundation block A.

After that, the overhanging crosspiece B is placed on the top surface of the foundation block A, and then positioned on the foundation block A within several bolt insertion holes b ₁ and b ₂ previously provided at the base b of the overhanging crosspiece B. After that, the anchor bolts C and D are driven and solidified. Then, by screwing nuts onto the anchor bolts C and D through washers, the projecting beam B is fixed to the upper surface of the foundation block A. Furthermore, the surface plate part _b3 on one side of the overhanging crosspiece part B and the soil backfilled in the excavated part G are paved with asphalt K and L to create a sidewalk E.

However, in the conventional product shown in Fig. 1, ready-mixed concrete is placed on site to form the foundation block A, so it takes time to place the ready-mixed concrete N, and anchor bolts C and D are required.
Since it is necessary to measure the installation position of the anchor bolts C and D, it is time-consuming to measure the
The mounting position of each foundation block A was uneven. 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 F. Therefore, this conventional product
The disadvantage was that it took a long time to construct.

In addition, when installing the overhanging crosspiece B on the top surface of the foundation block A, the mounting positions of the anchor bolts C and D installed on the foundation block A vary depending on the foundation block A, so the overhanging crosspiece B The gap between the two is inside (roadside) between the one placed at hand and the one placed several hundred meters away.
The outside (sidewalk) side was uneven, and it was not possible to create a sidewalk accurately along the road.

Furthermore, if the width of the foundation block A is narrow, it is necessary to prevent the overhanging crosspiece B from tilting by supporting it with a support (not shown). This required a lot of effort and special expense.

The specified invention and the second invention have been made in view of the above-mentioned points, and the purpose thereof is to be able to construct a walkway with a strong structure in a narrow space in a short construction period, and The mutual spacing between the one at hand and the one placed at the other end can be laid at uniform intervals without causing unevenness between the inside and outside, and furthermore, it is possible to create a structure with a robust overhanging walkway block and its construction method. There is something to offer.

An embodiment of the specified invention of the present application is shown below in Figures 3 to 5.
The installation method will be explained according to the diagram.

1 is an elevated roadway with an irrigation canal flowing along its edge or a path through a rice field, 2 is a sidewalk that should be built at an elevated position on the edge of this roadway 1, and 3 is a sidewalk. 2, an excavated section with a substantially L-shaped cross section formed by excavating the soil at the edge of the roadway 1;
is a foundation block made of concrete, and this foundation block 4 connects the upper part between the opposing leg parts 5 and 6 with several connecting members 7 and 7, and also connects the leg parts 5 and 6.
The connecting members 7, 7 are connected via several connecting rods 8, 8, and a starting edge 9a is provided on the outside between the connecting members 7, 7.
An overhanging crosspiece 9 is provided projecting therein, which has a concrete inflow groove 9b which is longer than the height of the leg 5, has a substantially triangular side surface, and communicates between the leg 5 and 6. Further, a top plate portion 10 is formed on the upper surface of the projecting crosspiece portion 9. The concrete inflow groove 9b has openings 9b ₁ and 9b ₂ formed in two directions, one on the top plate part 10 side and the other on the leg part 5 side, so as to facilitate pouring of fresh concrete 16. Reference numerals 9c denote two edges formed at the lower end of the projecting crosspiece 9 so as to be inclined parallel to the block 11 so that it can be easily attached to the block 11. 1
Reference numeral 2 denotes a ground cover, and this ground cover 12 is adhered and solidified to the outer edge and upper surface of the top plate portion 10 using mortar, anchor bolts, and the like. Further, this ground cover 12 is usually formed of concrete, but the inside thereof may be hollowed out as necessary to make it lightweight, although it is not shown in the drawings. Reference numeral 12a denotes a mounting hole provided in the ground cover 12, into which the guide fence 14 is erected by inserting the lower end of the support column 13 into the mounting hole 12a, filling it with concrete and hardening it.

One embodiment of the specific invention of the present application has the above-mentioned configuration, and the construction method of the second invention will be explained below along with the operation.

In order to create the sidewalk 2, first, as a first step, an excavated portion 3 having a substantially L-shaped cross section is formed at the edge of the roadway 1.

Next, in the second step, the foundation block 4 is installed in the excavation section 3.
are placed through the base concrete 15 and installed in large numbers in parallel along the roadway 1, and then the foundation blocks 4 are installed.
Reinforcement is arranged between the opposing leg parts 5 and 6. Next, the foundation block 4 is fixed in parallel to the excavated portion 3 by continuously pouring fresh concrete 16 into the gap between the opposing leg portions 5 and 6 of the foundation block 4 and hardening it. In this way, the ready-mixed concrete 16 poured continuously between the opposing leg parts 5 and 6 of the foundation block 4 flows into the concrete inflow groove 9b in the overhanging crosspiece part 9 and flows into the leg parts 5 and 6. The concrete is solidified integrally with the fresh concrete 16 that has been poured continuously between the concrete blocks 16 and 3, and flows into the concrete inflow groove 9b from the opening _9b3 provided between the edges 9c and 9c that are inclined parallel to the concrete block 11. The poured concrete 16 is integrated with the base concrete 15 cast on the surface of the interlocking block 11, so that the foundation block 4 is continuously fixed to the excavated portion 3. Therefore, the foundation block 4 can be continuously fixed to the excavated portion 3 without using a support as in the conventional case without leaning.

In the third step, the ground covering 1 is installed along the outer edge and upper surface of the top plate part 10 using mortar, anchor bolts, etc.
Fix 2.

After that, as a fourth step, a sidewalk 2 is created by laying asphalt 17 on the top surface of the top plate part 10, and asphalt 19 is paved on the top surface of the soil 18 filled in the void of the excavation part 3. Create road 2.

Furthermore, as a fifth step, the mounting hole 12a of the ground cover 12 is
By inserting the lower end of the pillar 13 of the guide fence 14 into the inside of the pillar 13 and filling and hardening concrete, the pillar 13
are erected to form the guide fence 14. Also road 1
Similarly, pillars 13 are erected on the sides to form guide rails 14. In this way, even in a narrow space, the asphalt 17 can be cantilevered and supported on the edge of the roadway 1 by simply laying the asphalt 17 on the top plate 10 formed on the top surface of the single projecting crosspiece 9 extending outward. It is possible to create a wide sidewalk 2.

In this embodiment, although the front plate part 10 is integrally formed on the sidewalk 2 side, the front plate part 10 is not necessarily formed on the side of the sidewalk 2.
There is no need to form it integrally with the leg portion 5. Further, in the above embodiment, the overhanging crosspiece 9 is placed on the outside of the leg portion 5.
Although this book is provided, it is not necessarily limited to this.

As mentioned above, the specified invention and the second invention are:
Since the foundation block and the overhanging section are integrally formed, and a concrete insertion groove is provided in the overhanging section that communicates with the gap between the opposing leg sections of the foundation block, the gap between the opposing leg sections of the foundation block can be easily removed. By simply pouring ready-mixed concrete into the excavated area, the foundation block can be firmly fixed without tipping over, and a walkway can be constructed using a narrow space. Additionally, unlike conventional methods, by pouring fresh concrete into the foundation block and letting it harden, the labor and positioning work required for planting anchor bolts, as well as the work of attaching overhanging beams to the foundation block, are eliminated. The construction period will be shortened and construction costs will be lower. In addition, as mentioned above, since the overhanging crosspiece is formed on the top surface of the foundation block, simply by arranging the foundation blocks side by side along an elevated roadway, the gap between the overhanging crosspieces at hand and at the other end can be adjusted to the inside and outside. Now, it becomes uniform and the sidewalk can be created accurately along the roadway. Therefore, even if the ground becomes loose or earth pressure is applied, the foundation block can be prevented from tipping.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view showing an example of the conventional method of laying overhanging walkway blocks, Figure 2 is a slope view showing the state of concrete pouring of foundation blocks,
FIG. 3 is a perspective view showing one embodiment of the basic block of the specified invention, FIG. 4 is a sectional view similarly showing the laid state, and FIG. 5 is a perspective view. 1... roadway, 2... sidewalk, 3... excavation section, 4...
...Foundation block, 5, 6... Leg member, 7... Connecting member, 9... Overhanging crosspiece, 9a... Starting edge, 9b...
...Concrete inflow groove, 16...Ready-mixed concrete.

Claims (1)

[Scope of Claims] 1. Opposing leg parts are connected by a plurality of connecting members, and an overhanging part is formed on the outside of the leg part on the roadway side, and the overhanging part is provided with the leg part. An overhanging walkway block characterized by a concrete inlet groove that communicates between sections. 2. A foundation block that connects opposing leg parts via a plurality of connecting members and has an overhanging crosspiece on the outside that has a concrete inflow groove inside that communicates between the leg parts is used as a foundation block at the edge of the roadway. Fresh concrete is placed in parallel with the excavation part provided in the section, and fresh concrete is poured continuously between the opposing leg parts of the foundation block, and the concrete flows into the concrete inflow groove and solidifies, thereby converting the foundation block into the foundation block. A construction method for constructing overhanging walkway blocks, which is characterized by fixing them to excavated areas to create a walkway.