JP4807627B2 - Structure and construction method of internal bearing wall and waterproof layer in basement - Google Patents

Description

  The present invention relates to the structure and construction method of an outer wall and an inner wall when a basement is constructed.

  Basement rooms are allowed to relax in floor area under the Building Standards Act, so when building a building on land with high land prices or on narrow land, the building area of the building is larger than the floor area ratio of the standard land. Since it can be taken and there are few sound leaks, it is possible to practice musical instruments at high volume, enjoy music, and watch DVDs even at late nights. It can be said that it is the most suitable structure when building a house on high land or land with a low building coverage.

  Conventionally, when constructing a basement of a relatively small building in such a narrow area, as shown in FIGS. 1 and 2, the ground surface 15 is excavated to the lower part of the basement, and a steel pipe pile (not shown) or a columnar shape is formed. The foundation is constructed by the improvement 12, the discarded concrete 14 is driven into the upper portion thereof, the pressure platen 5 is constructed, the water stop plate 11 is embedded between the pressure platen 5 and the outer wall 3, and the outer wall 3 and the inner wall 4. And a temporary frame and a reinforcing bar were constructed in the underground ceiling 16, and a basement frame was constructed by driving ready-mixed concrete into the temporary frame. The inner wall 4 is constructed by providing a space between the outer wall 3 and the inner wall 4 in order to construct the waterproof layer 10 on the L-shaped indoor surface where the finished pressure plate 5 and the outer wall 3 abut. After the construction of the waterproof layer 10, the space above the waterproof layer 10 was blocked by stacking the concrete blocks 2.

  In such a conventional one, the concrete inner wall 4 and the outer wall 3 are not connected, and the inner wall 4 does not function as an inner bearing wall. As the wall was designed with earth pressure taken into account, the outer wall thickness increased and the amount of rebar increased significantly.

  Further, since the concrete block 2 is stacked on the upper part of the waterproof layer 10 provided between the outer wall 3 and the inner wall 4, there is a problem that the waterproof layer 10 is damaged by the weight of the concrete block 2 and the groundwater enters. It was.

  Therefore, when the basement is constructed, the present invention can be used as an internal bearing wall by integrating the outer wall and the inner wall so that the thickness of the outer wall can be reduced. At the same time, an object of the present invention is to provide a structure and a construction method of the internal bearing wall and the waterproof layer of the basement that do not impose a burden on the waterproof layer.

In order to achieve such an object, the invention described in claim 1 is a basement structure having a pressure platen, wherein a steel plate for mountain retaining and a ready-mixed concrete are provided inside a mountain retaining made of H-shaped steel for mountain retaining and a steel plate for mountain retaining. A plywood plate is attached to the plywood plate to build up a reinforcing bar, an outer wall temporary frame, and an internal bearing wall temporary frame, and the outer wall is composed of a plywood plate, an outer wall temporary frame, and a reinforcing bar. A spacer is attached to the reinforcing bar to keep the distance between the base plate constant and prevent the ingress of groundwater, and a water stop plate is embedded seamlessly around the basement at the joint between the pressure plate and the outer wall. In order to apply a waterproof layer of about 50 centimeters to both the rising surface of the outer wall and the pressure platen surface after removing the temporary frame from the corner where the pressure platen and the outer wall temporary frame are in contact with each other. Assemble the temporary frame In this case, a triangular waterproof layer space having an opening of 60 centimeters for each of the outer wall side and the pressure platen side is provided at the lower part on the outer wall side of the internal bearing wall temporary frame, and after removing the temporary frame, By applying a waterproof layer to the entire circumference of the lower corner of the floor where the outer wall touches, and constructing the outer wall temporary frame and the internal load-bearing wall temporary frame as a unit, the outer wall and the internal load-bearing wall are integrated to form the inner wall of the basement. It can be used as an internal bearing wall, so that the thickness of the outer wall can be reduced, and a concrete block is stacked on top of the waterproof layer in the lower corner of the floor where the pressure plate and the outer wall are in contact. It is characterized by the fact that the waterproof layer is damaged due to the weight of the concrete block and the groundwater is prevented from entering through the gap between the outer wall and the pressure platen .

  According to the first aspect of the present invention, the inner load-bearing wall and the outer wall are connected, and the outer wall-side floor portion of the inner load-bearing wall is opened so as not to contact the waterproof layer. At that time, considering the earth pressure as an independent wall, the thickness of the wall is increased, and the amount of reinforcing bars is greatly increased, the present invention makes it possible to reduce the thickness of the outer wall, The burden on the waterproof layer is reduced, the amount of reinforcing bars and concrete on the outer wall can be greatly reduced, and the cost can be reduced.

  Embodiment 1 of the present invention will be described below.

  3 to 7 show a first embodiment of the present invention.

  FIG. 3 is a three-dimensional view of the basement 20. The outer wall 26, the inner bearing wall 22, the inner bearing wall 23, and the inner bearing wall 24 are constructed integrally, and the inner waterproof wall 22, the inner bearing wall 23, and a triangular waterproof layer on the outer wall 26 side of the lower surface of the inner bearing wall 24. A space 21 is formed.

  FIG. 4 is a cross-sectional view of the internal bearing wall and the outer wall of the basement. In order to construct a basement, first the ground surface 28 is excavated to the lower part of the basement, the foundation is constructed by the columnar improvement 32, the crushed stone 33 is laid, the discarded concrete 34 is driven into the upper part, and then the pressure plate 27 is constructed. Further, as shown in FIG. 6, an internal bearing wall temporary frame 48 and an outer wall temporary frame 40 are constructed, a reinforcing bar 29 is arranged inside the temporary frame, and a water stop plate is joined to the joint between the pressure platen 27 and the outer wall 26. 31 is embedded in the basement without any breaks, and ready-mixed concrete is poured into a temporary frame to complete the basement frame. At this time, a triangular waterproof layer space 21 for applying the waterproof layer 30 shown in FIG. 7 is provided at the corner where the pressure-resistant plate 27 below the inner bearing wall temporary frame 48 and the outer wall temporary frame 40 are in contact.

  As shown in FIG. 7, the waterproof layer 30 has a width of about 50 centimeters applied to both the rising surface of the outer wall 26 and the surface of the pressure-resistant board 27, so that the triangular opening of the waterproof layer space 21 is formed on the outer wall 26. It is desirable to open 60 cm each with respect to the pressure-resistant board 27.

  FIG. 5 shows the relationship between the retaining ring, the temporary frame, and the reinforcing bar. A veneer plate 41 for preventing adhesion between the steel plate 43 for mountain retaining and the ready-mixed concrete is sandwiched inside the mountain clamp composed of the H-shaped steel 44 for mountain retaining and the flat steel plate 43 for mountain retaining, and the reinforcing bars 29 and the outer wall are placed inside the temporary frame. The temporary frame 40 and the internal bearing wall temporary frame 48 are constructed, and further, the reinforcing bar 29 that constructs the outer wall has a constant interval between the plywood 41, the outer wall temporary frame 40, and the reinforcing bar 29, thereby preventing intrusion of groundwater. Therefore, the spacer 42 is attached. Also, the internal bearing wall temporary frame 48 is constructed by a separator 46 and a clamp hardware 47, and a reinforcing bar 29 is arranged inside. By pouring the ready-mixed concrete into the outer wall temporary frame 40 and the inner bearing wall temporary frame 48 thus configured, the outer wall 26 and the inner bearing wall 22 are constructed as shown in FIG.

  FIG. 7 is a three-dimensional view showing the relationship between the water stop plate 31 and the water stop layer 30 in the lower part of the basement constructed by the outer wall 26 and the internal bearing wall 22. Since the water blocking layer 30 is continuously constructed in the triangular waterproof layer space 21 constructed under the internal bearing wall 22 and no load is placed on the surface of the water blocking layer 30, The water stop effect lasts for a long time.

  The second embodiment of the present invention will be described below.

  FIG. 8 shows a second embodiment of the present invention. In the first embodiment of the present invention, as shown in FIG. 7, the waterproof layer space 21 has a triangular shape, whereas in the second embodiment of the present invention, as shown in FIG. The waterproof layer space 53 is configured as a quadrangle. The structure and construction method of the other internal bearing walls and waterproof layers in the basement are the same as those in the first embodiment of the present invention.

  As mentioned above, based on the embodiment, the structure and construction method of the internal bearing wall and waterproof layer of the basement according to the present invention have been described in detail, but the present invention is not limited to the above embodiment. Of course, even if various modifications are made without departing from the spirit of the invention, they are within the technical scope of the present invention.

It is a three-dimensional structure figure of the outer wall and internal wall of the conventional basement which concerns on Embodiment 1 of this invention. It is sectional drawing of the conventional basement which concerns on the embodiment. It is a three-dimensional structure figure of the internal bearing wall and outer wall of the basement which concerns on the embodiment. It is sectional drawing of the internal bearing wall and outer wall of the basement which concerns on the embodiment. It is sectional drawing which shows the relationship between the reinforcing bar which concerns on the same embodiment, and a temporary frame. It is a three-dimensional view showing the relationship between the reinforcing bar and the temporary frame according to the embodiment. It is a three-dimensional view showing the relationship between the outer wall and the internal bearing wall according to the embodiment. It is a three-dimensional view which shows the relationship between the outer wall and internal bearing wall which concern on Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Underground part 2 Concrete block 3 Outer wall 4 Inner wall 5 Pressure-resistant board 6 Stairway 7 Reinforcement 8 Reinforcement 10 Waterproofing layer 11 Water stoppage 12 Columnar improvement 13 Crushed stone 15 Ground surface 16 Basement ceiling 20 Underground indoor part 21 Waterproofing layer space 22 Inside Bearing wall 23 Internal bearing wall 24 Internal bearing wall 25 Staircase 26 Outer wall 27 Pressure board 28 Ground surface 29 Reinforcing bar 30 Waterproof layer 31 Water stop plate 32 Column improvement 33 Crushed stone 34 Abandoned concrete 35 Underground ceiling slab 40 Temporary frame 41 for outer wall Veneer board 42 Spacer 43 Steel plate for mountain retaining 44 H-shaped steel for mountain retaining 45 Receiving tree 46 Separator 47 Fastening hardware 48 Temporary frame for internal bearing wall 49 Receiving tree 50 Pipe support 51 Internal temporary frame wall side lower part 52 Internal bearing wall 53 Waterproof layer space 54 Pressure resistant panel 55 Reinforcing bar 56 Discarded concrete 57 Crushed stone 58 Water stop plate 59 Waterproof layer 60 Outside wall

Claims (1)

In a basement structure with a pressure platen, a veneer plate is attached to the inside of a retaining ring composed of H-shaped steel for mountain retaining and a flat steel plate for mountain retaining, to prevent adhesion between the flat steel plate for mountain retaining and ready-mixed concrete. The outer wall temporary frame and the internal load-bearing wall temporary frame are constructed, and the outer wall is constructed with a reinforcing bar in order to stabilize the distance between the plywood, outer wall temporary frame, and the reinforcing bar to prevent intrusion of groundwater. Attach the spacer, embed the water stop plate seamlessly around the basement at the joint between the pressure plate and the outer wall, and when assembling the temporary frame, the pressure plate at the bottom of the internal bearing wall temporary frame and the temporary wall frame After removing the temporary frame at the corner, a waterproof layer of about 50 centimeters is applied to both the rising surface of the outer wall and the pressure platen surface. Therefore, when assembling the temporary frame, the outer wall side of the internal bearing wall temporary frame At the bottom, the outer wall side and resistance A triangular waterproof layer space with an opening of 60 cm each is provided on the panel side, and after removing the temporary frame, a waterproof layer is applied to the entire perimeter of the lower corner of the floor where the pressure-resistant panel and the outer wall are in contact with each other. and by building an internal bearing wall for the temporary frame integrally, outer and internal load-bearing wall is possible to take advantage of the internal wall of the basement together as an internal bearing wall, to reduce the thickness of the for the outer wall As a result, it is no longer necessary to build a concrete block on top of the waterproof layer at the corner of the floor where the pressure plate and the outer wall are in contact, and the waterproof layer is damaged by the weight of the concrete block. The structure and construction method of the internal bearing wall and waterproof layer of the basement characterized by preventing the ingress of groundwater from the gap between the outer wall and the pressure platen .

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