JP2003013459A - Foundation form made of concrete - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide forms, which need not be removed by placing concrete into forms made of concrete by using the forms and unifying placing concrete and the forms. SOLUTION: The places of foundation stones installed are excavated and floor-levelled, the forms made of concrete are mounted and back-filled, and concrete is placed in the forms, thus completing the foundation stones unified by the irregularities of the internal surface of the forms.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method for foundations of civil engineering, traffic safety facilities and the like. 2. Description of the Related Art In conventional basic concrete for traffic safety facilities and the like, heavy objects having a weight exceeding 3 tons are required.
After digging a predetermined hole in the installation location and leveling the floor, assembling a wooden or steel formwork, driving in concrete, checking the predetermined strength after curing, dismantling and refilling the formwork to complete The construction period per site and the number of days required for traffic regulation are 1
If it is necessary to replace the foundation block with a secondary concrete product for about 10 days from a week, the weight will be 3 tons or more, so traffic will be restricted and construction costs will be higher due to laying work using large cranes etc. However, there were problems such as traffic congestion due to traffic regulations. [0003] The present invention relates to a traffic safety facility on a limited road where traffic accidents frequently occur in today's social environment and car society, which is one of the major social problems. By carrying out basic construction such as, for a certain period of time, for approximately one week to ten days, decrease of road width leads to increase of traffic accident occurrence rate, traffic jam in construction area, An object of the present invention is to solve the above-mentioned problems. In order to solve the above-mentioned problems, the present invention is made of concrete and is provided with irregularities of about 2 cm on the inner surface of the formwork, so that the poured concrete and the formwork are integrated. Created a formwork that does not require the removal of [0005] In the production of basic concrete, such as traffic safety facilities, after drilling a predetermined hole in the construction site and leveling the floor, concrete formwork is installed, the surrounding area is immediately backfilled, and the present condition is restored. The foundation concrete can be built up by driving concrete into the formwork. [0006] [Examples] When listing examples on general national highways, the first example is the installation of foundation concrete for guide signs, but the size is about 3,50 meters wide and 1,20 meters high. 1,
When a 50 meter foundation is constructed using the concrete formwork shown in Fig. 2, it takes one day for the above work such as excavation floor leveling, concrete formwork installation, backfilling, and one day for concrete pouring. It could be completed in a total of two days, and there was no hindrance to passing vehicles and pedestrians. [0007] The second example is also a construction work on a general national highway, but the foundation concrete structure is the foundation of the end support of the guard cable, but the size is almost the same as the first example. Work was completed in two days. When the concrete formwork according to the present invention is used for construction, unlike the conventional construction method after the leveling of the excavated floor, the present condition can be restored by immediately burying the concrete formwork after installation. As a result, there is no need for long-term traffic regulation or the like for vehicles traveling on nearby roads. [0009] After the concrete is cast, it becomes unnecessary to dismantle and remove the formwork by integrating it by the unevenness of the inner surface of the formwork, so that the number of days required is reduced from one-third to one-fourth of the conventional method. You can do it. In addition, traffic congestion due to traffic regulations and consideration for pedestrians can be completed in about two days, and the incidence of traffic accidents etc. in the construction area,
Can be kept to a minimum.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a concrete foundation form according to the present invention. FIG. 2 is a perspective view of FIG. FIG. 3 is a partial cross-sectional view of a concrete formwork. DESCRIPTION OF REFERENCE NUMERALS 1 is a concrete mold 2 is an irregularity on the inner surface of the mold [Brief description of the drawings] FIG. 1 is a plan view of a concrete foundation form according to the present invention. FIG. 2 is a perspective view of FIG. FIG. 3 is a partial cross-sectional view of a concrete formwork. [Description of Signs] 1 is a concrete formwork 2 is irregularities on the inner surface of the formwork

Claims (1)

Claims: 1. A formwork made of concrete and having an inner surface of the formwork having an irregularity of about 2 cm, whereby the poured concrete and the formwork are integrated, so that the formwork does not need to be removed.