JPH03260223A - Positioning plate for base construction of housing - Google Patents

Abstract

PURPOSE:To integrate steel columns with piles by preventing the sideward moving of the steel column legs during or after penetration into ground- improving piles by a method in which a positioning plate is put on a ground- improving pile driven into the ground and fixed to the ground by anchors. CONSTITUTION:A positioning plate P for construction of base is made up of a square steel plate 1 having a central hole 1a, through holes 1b, and spikes 1C on the downside and a cylinder 2 fitted with the hole 1a. Before a ground- improving pile 3 driven into the ground is hardened, the plate P is put on the pile 3 in such a way as to position the cylinder 2 on the center of the pile 3 and anchors 4 are driven into the ground through the holes 1b. The plate P is fixed to the ground by the spikes 1C, and the lower ends of the legs 5b of the steel columns 5a are inserted into the cylinder 2 and penetated into the pile 3. Bolts 6 are inserted into the coupling holes of the legs 5b from the holes 2a of the cylinder 2 to fix the plate P.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention involves driving soil improvement piles made of soil cement or the like into the ground, and applying the above-mentioned anti-oxidant treatment to the legs of the foundation unit before the soil improvement piles harden. This invention relates to a positioning plate used when constructing the foundation of a house by inserting it into a sink.

[Conventional technology]

Conventionally, an independent foundation made of concrete and a continuous foundation called a cloth foundation have been used for the foundation of a general house. These foundations are constructed by, for example, digging a hole (trench) in the ground, paving the bottom with quartz stones, and pouring concrete on top to form a base. Horizontal reinforcing bars are tied together with wires, formwork is provided with a predetermined width on both sides of these reinforcing bars, and concrete is poured between the forms.

However, in order to maintain the dimensions of the above foundation at a specified distance between formworks on site, the formwork must be constructed using spacers, clampers, etc., and the framework must be constructed using concrete. Because it requires sufficient strength to withstand heavy lifting, it is not something that just anyone can do; it requires workers from various professions, such as formwork carpenters, earthworkers, and reinforcing steel workers.Furthermore, since concrete has a curing period, It requires manpower and time.

Therefore, recently, soil improvement piles made of soil cement, etc. are driven from the surface of the ground to the ground on the land where a house is to be built.
A construction method is being implemented in which a steel column is inserted into the center of the pile from its upper end and then lowered to form the foundation for a house.

[Problem to be solved by the invention]

However, in the above foundation construction method, the legs of the steel columns tend to move laterally when or after inserting them into the unhardened soil improvement piles. There is a problem in that if the legs of the steel column move laterally, the complete integration of the soil improvement pile and the steel column is likely to be hindered.

The present invention provides a housing that can guide the legs of a steel column inserted into unhardened ground improvement piles and prevent the legs from moving laterally, and also prevent the steel column from lateral shaking after settling. The purpose of the present invention is to provide a positioning plate for foundation construction.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a tube through which the leg of a steel column is inserted approximately in the center of a plate placed on the top surface of a soil improvement pile made of soil cement or the like cast underground. A through hole for driving the anchor into the ground was formed around the plate.

[Effect]

A positioning plate according to the present invention is placed on the upper surface of an unhardened soil improvement pile driven into the ground, and an anchor is driven into the ground through a through hole to firmly fix the plate to the ground.

After preparing in this way, the legs of the steel column are inserted into the cylinder and inserted into the unhardened ground improvement pile, but as mentioned above, the plate is firmly fixed to the ground with anchors. The ground improvement pile is unhardened, and even if an external force is applied when inserting the steel column base, it will not move laterally without permission and will correctly guide the steel column.

Therefore, the legs of the steel column do not move laterally during or after insertion into the unhardened soil improvement pile, and the steel column is well integrated with the soil improvement pile.

〔Example〕

The attached drawing shows one embodiment of the present invention, and the positioning plate (P) for constructing the foundation of a house according to the present invention is composed of a plate body 1 and a cylinder body 2.

The plate body 1 is made by cutting a plate material such as a steel plate into a rectangular shape, and drilling a rectangular center hole 1a in the center and through holes 1b in each of the four corners, and a spike IC on the lower surface of the intermediate position between the adjacent corners. It is manufactured by drilling. This plate 1
is a ground improvement pile made of soil cement etc. driven into the ground 3
It is placed directly on the upper surface of the soil improvement pile 3, and is formed sufficiently large so that each through hole 1b and each spike IC are displaced outward from the outer periphery of the ground improvement pile 3 and come into contact with the ground. Through hole 1
b is for fixing the plate 1 to the ground by driving the anchor 4 into the ground from above the plate 1, and the spike IC bites into the ground to fix the plate 1 to the ground in the same way as the anchor 4. do.

The cylinder 2 is made by cutting a cylinder made of steel or the like with a rectangular cross section into a predetermined length, and drilling bolt holes 2a in the side surface of the cylinder, and then fitting it into the center hole 1a of the plate 1 for welding or the like. It is vertically and integrally fixed to the plate body 1 by means of.

This cylindrical body 2 is for inserting the lower part of the steel column 5a of the foundation unit 5, that is, the leg part 5b, and its inner shape (
diameter) is matched to the size and shape of the leg portion 5b.

The bolt hole 2a is used to fix the steel column 5a to the cylinder body 2 by inserting the port 6 into the locking hole 5C drilled in the steel column 5a after the leg portion 5b has been inserted into the unhardened soil improvement pile 3. belongs to.

The foundation unit 5 is installed in a factory or the like by connecting a plurality of (four in Fig. 3) steel columns 5a and a plurality (eight in Fig. 3) of steel beams 5d.
It is made by joining together as one.

There are various methods of driving the ground improvement pile 3, but a typical method is to use an earth auger to drill a hole in the ground.
An example of the soil improvement pile 3 can be given by injecting cement milk into the hole.

Next, the operation of the positioning plate according to the present invention will be explained.

While the ground improvement pile 3 driven as described above remains unhardened, the positioning plate P of the present invention
The plate body 1 is placed on the upper surface of the pile 3 with the cylinder body 2 arranged at the center position of the pile 3, the spikes 1c are dug into the ground, and the anchor 4 is driven into the ground through the through hole 1b. As a result, the positioning plate P is directly fixed to the ground regardless of the unhardened ground improvement piles 3.

After completing the above work, each leg 5b of the basic unit 5
The lower end of the base unit 5 is fitted into each cylindrical body 2, and the base unit 5 is lowered in a predetermined posture to insert its leg portion 5b into the pile 3 and lower it. At this time, as described above, the main positioning plate P is firmly fixed to the ground and correctly guides the leg portion 5b, so that the leg portion 5b does not shift laterally.

When the locking hole 5C of the steel column 5a matches the bolt hole 2a of the cylinder 2, insert the port 6 from the bolt hole 2a into the locking hole 5c, fix the foundation unit 5 to the positioning plate P, and start the foundation construction work. Finish for now. The above condition is maintained until the soil improvement piles 3 are completely hardened, but before the piles 3 are completely hardened, external forces such as wind etc.
This positioning plate P prevents the foundation unit 5 from lateral shaking even if the base unit 5 is subjected to a lateral movement.

In addition, the shape of the plate 1 and the cylinder 2, the through hole 1b and the spike lc
The number and position of are not limited to those shown in the figure.
It is optional in the present invention.

〔Effect of the invention〕

As explained above, the positioning plate for constructing the foundation of a house according to the present invention has a steel column column located approximately in the center of the plate body that is placed on the top surface of the soil improvement pile made of soil cement or the like cast into the ground. A cylindrical part is provided through which the leg of the plate is inserted, and a through hole is formed around the plate for driving the anchor into the ground, so this can be firmly fixed to the ground with the anchor. , it is possible to correctly guide the legs of a steel frame column without moving it laterally, insert it into an unhardened ground improvement pile, and to prevent the steel column from lateral shaking after insertion and settlement. Therefore, it is easy to more completely integrate the steel columns with the soil improvement piles and create a good foundation for a house.

[Brief explanation of drawings]

The attached drawings show one embodiment of the present invention, and Fig. 1 is a partially cutaway external view showing the relationship between the positioning plate for building foundations of houses and soil improvement piles according to the present invention, and Fig. 2 is a diagram showing the positioning plate according to the present invention. FIG. 3 is a cross-sectional view showing the state in which the plate is used, and an external view showing the state in which a house foundation is being prepared. Figure 2

Claims (1)

[Claims] A cylindrical part through which the legs of the steel column are inserted is provided approximately in the center of the plate that is placed on the top surface of the soil improvement pile made of soil cement, etc., which is driven into the ground, and an anchor is attached to the periphery of the plate. A positioning plate for constructing the foundation of a house, characterized by having a through hole formed therein for driving the material into the ground.