JP3486771B2 - Precast basic blocks such as protective fences and signs - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a precast basic block such as a protective fence and a sign installed on a sidewalk of a road. Part of the concrete on the top of this precast foundation block was demolished at the time of construction, the props such as protective fences and signs were easily set up, and the props could be reliably installed at the construction limit, effectively securing the sidewalk width, and Precast basic blocks such as protective fences and signs that have a structure that is easy to set up, shortens the construction period, and has a low total cost, as well as ensuring construction and safety management.

[0002]

2. Description of the Related Art Conventionally, protective fences installed on road sidewalks, etc.
For the foundation such as signs, after the construction of the pavement, cut the pavement with an asphalt concrete cutter, demolish the pavement and excavate, install a formwork and place concrete,
Precast foundation block We installed a precast foundation block without a box up to the top. For this reason, it took a lot of time and labor to construct and there was a problem in construction management, safety management and construction process. Also, in the conventional precast foundation block, the foundation of the town block could not be installed, so the pillars could not be installed reliably near the building limit, and the sidewalk width was reduced.

[0003]

[Problems to be Solved by the Invention] The foundation of conventional protective fences, signs, etc. installed on sidewalks is to backfill the side of the street after construction of the street, pavement cutting, pavement destruction, excavation, etc. It was very difficult to spread the pavement material and roll it because the foundation was made by placing concrete after placing the formwork or the precast foundation block was boxed up to the top of the precast foundation block. Therefore, the setup and construction were troublesome and the cost was high. Furthermore, during construction, pedestrians were at risk for a long period of time, causing problems in construction management and safety management.

The conventional precast basic block is
Since the foundation of the town block was obstructed, pillars could not be installed reliably near the building limit, and the sidewalk width was reduced.

Furthermore, construction waste materials such as asphalt concrete and recycled stone materials generated by pavement breaking and excavation have become environmental problems.

The present invention, which aims to solve such a problem, eliminates a part of the concrete on the upper part of the precast foundation block at the time of erecting the props such as the protective fence and the sign to save the construction time and preparation. The structure is simple and the pillars can be set up easily and surely, and a part of the precast foundation block is cut out so that the pillars can be reliably installed near the building limit, and the sidewalk width is not wasted. Furthermore, the total cost is low and construction management during construction
It intends to provide precast basic blocks such as protective fences and signs with a structure that ensures excellent safety management.

[0007]

In order to solve the above problems, according to the invention of claim 1, when a precast foundation block is manufactured, concrete is poured into a box removing portion at the upper part of the foundation simultaneously with the main body. Then, when the pillar is stood up, a part of the upper concrete is demolished and the pillar is installed in the box removing part, so that a structure excellent in workability and safety is adopted.

According to the second aspect of the present invention, a part of the precast foundation block is cut out so that the precast foundation block is installed in the vicinity of a sidewalk boulder, and a pillar can be surely set up near the building limit. .

The present invention having the above-described structure is excellent in securing construction management and safety management when constructing protective fences, signs, etc., has a low total cost, and securely supports the columns near the building limit to keep the sidewalk width. Can be effectively secured, the construction work and setup can be simplified, and the construction period can be greatly shortened.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, reference numeral 1 is a precast foundation block, and this precast foundation block requires an upper concrete portion 10 in the figure, a box removing portion 7 in the figure, and a notch portion 9 in the figure. It has a rectangular shape. Such a precast foundation block is installed on the sidewalk side of the sidewalk boulder part 3 in the figure after the construction of the town block 4 in the figure, and at the position where the pillars 2 in the figure can be set up at the construction limit of 5 in the figure. To do.

After the precast foundation block 1 is installed, the soil is backfilled and the sidewalk pavement 6 in the figure is constructed.

The work for backfilling the soil and constructing the sidewalk pavement is easy because the upper concrete 10 has a lid on the top end of the box removing part 7 of the precast foundation block 1. It has an effect on material leveling and compaction work, and it excels in construction / safety management during work and safety management after work.

Next, a part of the upper concrete 10 of the precast foundation block is demolished, and the pillar 2 is attached to the construction limit 5.
Set up and fill 8 concrete in the figure. It is possible to effectively secure the sidewalk width by setting up the pillars at the construction limit.

After the infill concrete has hardened, protective fences and signs are installed. In this way, the construction labor and setup can be simplified, and the construction period can be greatly shortened.

As described above, according to the present invention, this precast foundation block has a shape in which the top end of the box removal part is covered with an upper concrete, and is excellent in construction management and safety management during work, and It is also excellent in safety management after work. Moreover, the setup and construction work can be simplified, the construction period can be significantly shortened, the construction cost can be reduced, and the waste materials generated in the construction can be suppressed. Furthermore, since the precast foundation block is cut out in part, it is possible to effectively secure the sidewalk width by setting up the pillars at the building limit.

[Brief description of drawings]

FIG. 1A is a sectional view of a precast foundation block according to an embodiment of the present invention. FIG.

FIG. 2 (a) is an enlarged sectional view of the same precast foundation block.

[Explanation of symbols]

1 Precast basic block 2 props 3 sidewalk stones 4 towns 5 building limits 6 sidewalk pavement 7 Precast foundation block box removal part 8 Filled concrete 9 Precast foundation block cutout 10 Precast foundation block upper concrete 11 Town sidewalk side stone foundation

Claims (2)

(57) [Claims] 1. A precast concrete block made of concrete in which props such as protective fences and signs to be installed on sidewalks are erected, and a box open section having a rectangular cross section and an upper concrete covering the top end are integrally cast. Precast foundation blocks such as protective fences and signs, which are characterized by the fact that the upper concrete is demolished at the time of construction and the columns are set up. 2. The precast foundation block according to claim 1, wherein a part of the box-out portion is cut out.