JPH0133682Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a joint material support structure with a waterstop plate that supports a joint material forming vertical grooves for earthquake resistance in a concrete wall.

[Prior Art] Current structural calculation methods for buildings generally assume that the floor of the building is rigid;
In the case of no torsion, it is assumed that the amount of deformation of columns and walls on the same floor is equal, and stress analysis is performed based on the elastic rigidity of the members. Therefore, it is necessary to appropriately evaluate the elastic stiffness of members in structural calculations. If there is a column with a hanging wall, waist wall, sleeve wall, etc. that does not take rigid areas into account in structural calculations, the column is actually a hanging wall, waist wall, sleeve wall (hereinafter simply referred to as a wall). ), which restricts deformation, resulting in an increase in rigidity compared to the calculated value. In particular, when the wall is made of concrete, the rigidity of the column attached to the concrete wall increases further, and the wall further restrains the deformation of that column, making it a rigid column. The resulting shear force will be greater than the designed one, and this column will fail before the other columns.

In order to prevent this, the Building Standards Act has established several standards to ensure that columns are not affected by walls. As shown in Figure 1, the conventional structure of a wall according to this standard is to form a vertical groove in a concrete wall A that completely separates the wall A, and insert foam material B into the vertical groove. There is one in which a caulking material C is inserted into the vertical groove from the outer surface of the wall A. According to this, it is true that the longitudinal groove eliminates the restriction of the wall body to the column, and furthermore, the wall body A
Water intrusion from the outside can be prevented by caulking material C, but in the event of a fire, caulking material C and foaming material B will fall, creating a vertical groove in wall A that communicates with the inside and outside, and the fire will cause damage to the building. It has the disadvantage that if it gets inside the

[Problem to be solved by the invention] According to the Building Standards Act, earthquake-resistant concrete walls must have a wall thickness of approximately one-sixth or less of the width of the columns and approximately 10 cm or less. Standards are shown. According to this regulation, it is not necessarily necessary to form vertical grooves to separate the concrete wall as in the conventional earthquake-resistant structure, but it is sufficient to form a section in the vertical direction of the wall that satisfies the above criteria.
For this purpose, we focused on forming vertical grooves in the wall and making sure that the thickness of the wall in the area where the vertical groove was formed was within the dimensions specified by the Building Standards Act.

This idea was developed to form a vertical groove in the wall when forming a concrete wall with the above-mentioned earthquake-resistant structure, and to install a water stop plate joint material in the frame at the bottom of the vertical groove, which is extremely stable. The present invention provides a joint material support structure with a water stop plate for forming vertical grooves, which is intended to be easily installed.

[Means for solving the problem] In order to achieve the above-mentioned purpose, this invention provides a joint material for forming vertical grooves, which is supported by one side of the water stop plate in contact with the head, in pairs. is removably fixed to one frame forming a formwork for forming a concrete wall, and the pressing body provided on the other side of the bolt screwed on one side to the other frame of the above-mentioned formwork It is formed by pressing the other side of the water stop plate supported by the head of the joint material.

[Function] A joint material that is removably fixed to one of the frames forming a formwork for forming a concrete wall and a water stop plate that is supported on one side by the head of this joint material are , the other side of the water stop plate is pressed by a pressing body provided on the other side of the bolt whose one side is screwed into the other frame of the formwork, and the water stop plate is strongly clamped by the one frame and the pressing body. It is stably supported by the frame, withstands the flow pressure of concrete during concrete pouring, and prevents the joint material and waterstop plate from shifting or coming off.

[Example] This invention will be described in detail below based on an example shown in the drawings.

In the drawing, 8 is a joint material that forms vertical grooves 4 in the wall body 1, and this joint material 8 is designed so that the thickness of the wall body 1 in the part where the vertical grooves 4 are formed is within the dimensions specified by the Building Standards Act. It has a height of In the example, two joint materials 8, 8 are used, and the outer surface 2 of the wall 1 is
It has a structure in which vertical grooves 4, 4 are formed at opposing positions on the inner surface 3, and the thickness of the wall body 1 at the portion of the two vertical grooves 4, 4 is within the dimensions specified by the Building Standards Act. It's summery. The joint material 8 is removably fixed by nails 9 to one of the outer frames 6 forming a formwork for forming a concrete wall. Reference numeral 5 denotes a water stop plate that is inserted into the bottom of the longitudinal groove 4 of the outer surface 2 formed on the wall 1, and an engagement groove 10 is formed in the center of one side of the water stop plate 5. The engaging groove 10 is supported by being abutted against and engaged with the head of the joint material 8. In addition, the water stop plate 5
Engagement grooves 11 are formed in the longitudinal direction on both sides of the other surface. 12 is a bolt hole, and this bolt 1
One side of the frame 2 is screwed onto the other side of the formwork, that is, the inner frame 7. A pressing body 13 is provided on the other side of this bolt 12, and this pressing body 1
3 is in contact with the other surface of the water stop plate 5 supported by the head of the joint material 8, and both sides of the water stop plate 5 are engaged with the engagement grooves 11 of the water stop plate 5.
is pressed in the direction of the outer frame 6. Therefore, the water stop plate 5 and the joint material 8 are connected to the outside frame 6.
It is supported in a strongly narrowed state by the pressing body 13, and together with the fastening by the nails 9,
The water stop plate 5 and the joint material 8 are supported extremely stably,
It can fully withstand the flow pressure of concrete during concrete placement, and there is no risk of it shifting or coming off. After the poured concrete has hardened, remove the frames 6 and 7 and remove the joint material 8 to form vertical grooves 4 on the surface.
is formed, and a concrete wall 1 having an earthquake-resistant structure is formed in which a water stop plate 5 is installed at the bottom of the vertical groove 4.

[Effects of the invention] As described above, according to this invention, the joint material for forming vertical grooves, which is supported by one side of the water stop plate in contact with the head, is used in pairs to form a concrete wall. The head of the joint filler is fixed removably to one frame forming the formwork for the purpose, and the head of the joint filler is fixed to the other side of the bolt, which is screwed on one side to the other frame of the formwork. Since the other side of the water stop plate is pressed against the other side of the water stop plate supported by the , the other side of the water stop plate is pressed by a pressing body provided on the other side of the bolt whose one side is screwed into the other frame, so that the water stop plate is strongly clamped by the one frame and the pressing body, Together with the joint material's fastening, the water stop plate and the joint material are supported extremely stably, withstands the flow pressure of the concrete during concrete pouring, and there is no risk of it shifting or coming off, so it is securely attached to the wall. It has excellent effects as a joint material support structure with water stop plates for forming vertical grooves, such as being able to form vertical grooves for earthquake resistance and filling these grooves with water stop plates for water stop. be.

[Brief explanation of the drawing]

Figure 1 is an explanatory cross-sectional view showing a wall with a conventional earthquake-resistant structure, Figure 2 is an explanatory cross-sectional view showing an example of the implementation of this invention, and Figure 3 is an explanatory cross-sectional view showing an earthquake-resistant structure formed using this invention. FIG. 5... Water stop plate, 6, 7... Frame body, 8... Joint material, 12... Bolt, 13... Pressing body.

Claims (1)

[Scope of utility model registration request] The joint material for forming vertical grooves, which is supported by one side of the water stop plate in contact with the head, can be removed from one frame body that forms a pair of forms for forming concrete walls. The other side of the water stop plate supported on the head of the joint material is pressed by a pressing body provided on the other side of the bolt, which is fastened to the other side of the formwork and screwed on one side to the other frame body of the formwork. A joint material support structure with a water stop plate for forming vertical grooves.