JPS626018A - Building utilizing underground cintinuous wall and its construction - Google Patents

Abstract

PURPOSE:To effectively utilize the ground by making the distance between outer walls smaller by a method in which notched recessions are formed in underground continuous walls, and the underground pillar forms of the wall body are housed in the recessions. CONSTITUTION:H-shaped steels 8 and structural parts 5 are built in a soil cement sheathing wall as an underground continuous wall 1, and the body side of the wall 1 is excavated during excavation. The parts 5 are connected by partition plates 7, e.g., steel plate, between the waves of the H-shaped steels 6 set in parallel, and excavation is made to the position of the plates 7 on the body side of the parts 5. Pillar forms 4 projected from the outer wall of the lower part 2 of the body are housed in the excavated hole. Even when an existing building is adjacent, the pillar and wall on the ground's surface can thus be built up even to extremely closer outside.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a building using an underground continuous wall and its construction method, and can be applied to cases where the building is constructed in close proximity to neighboring buildings, etc.

[Conventional technology]

In urban areas, land prices are high and effective use of land is desired, as well as the need to encourage fire-resistant construction and secure parking lots, so many reinforced concrete buildings with 1 to 6 floors underground are being constructed. .

However, there are many problems such as vibration and noise problems during foundation construction and the impact on neighboring buildings due to ground subsidence, and to avoid these problems, underground continuous wall construction method is used.

The underground continuous wall construction method enables construction with low vibration and low noise.
It has the advantage of being highly rigid as a wall, and can be constructed close to other structures during construction, allowing for effective use of land. □This type of continuous underground wall construction method involves, for example, excavating using a multi-axis auger, injecting and stirring a hardening phase such as mortar to create a fill mortar wall, and then creating a fill mortar wall by applying stress to the H-section steel before hardening. There is a construction method such as inserting a wall, etc., which has high water-stopping properties and wall strength, and the cost is about the same as the method of burying sheet piles, so the construction results are increasing mainly in urban construction.

Figures 6 (a), (b), and (C) show the normal construction procedure when using a 3-axis auger.
erect H-beams 8 (indicated by dotted lines in the figure) to construct a retaining wall.

[Problem that the invention seeks to solve]

Continuous underground walls such as fill mortar walls use excavating machines such as auger machines during construction, so as shown in the off-line diagram and Figure 8, it is difficult to prevent walls from entering the ground from nearby existing buildings 9 and obstacles. Restricted by the distance to underground wall 1,
Therefore, the distance between the outer walls is also determined. The distance between the outer walls in this case varies somewhat depending on the wall thickness of the underground continuous wall 1, the cross-sectional dimension of the H-beam 8 as a stress relief, etc., but is generally about 70 to 80 cIL.

The purpose of this invention is to reduce the distance between outer walls, which is restricted as described above, and to enable more effective land use.

[Means for solving problems]

This invention is a building in which a framework underground section 2 is constructed inside an underground continuous wall 1, in which a recess 3 is formed by a notch on the framework side of the underground continuous wall 1, and the framework underground section 2 is installed inside the recess 3. This pillow type 4 is housed.

In other words, the pillars of the underground part 2 of the frame are shaped to protrude outward from the outer wall surface, and therefore the pillars 10 of the above-ground part that are continuous with this can also be built closer to the site boundary line by the amount of the protrusion of the pillow type 4. The site can be utilized to the maximum extent even if there is a building to be built.

As a construction method, a partition plate 7 is installed between the webs of parallel steel sections 6.
A panel-shaped connecting member 5 is built into the underground continuous wall 1 before hardening, and after hardening, a recess 3 is formed in the underground continuous wall 1 by recessing the built-in part side 5 and the frame side of the stand. , and the pillar wall 4 of the underground part 2 of the building frame can be constructed within the recess 3 .

〔Example〕

Next, the illustrated embodiment will be described.

FIGS. 1 and 2 show an embodiment of a building according to the present invention, in which an H-beam 8 and a built-in member 5 serve as stress controls.
is built in a mail mortar projecting wall as an underground continuous wall 1, and the skeleton side of the underground continuous wall 1 is excavated during root cutting to construct an underground part 2 of the skeleton made of reinforced concrete.

The built-in part *A5 is made by connecting webs of parallel H-beams 6 with a partition plate 7 such as a steel plate, and can be manufactured in advance at a factory. The structure side of the construction section 5 is excavated to the position of the partition plate 7, and the pillow type 4 protruding from the outer wall surface of the underground section 2 of the structure is housed. The pillars 10 above the ground can be constructed continuously, and the outer walls 11 can also be positioned on the outside accordingly, so that the building 9 that is close to the ground can be constructed in a continuous manner, compared to the conventional example shown in FIG.
The distance between the outer wall and the outer wall can be reduced by the amount of the protrusion of the pillow shape 4.

Figures 3 (a), (b), ((d) show an example of the construction procedure, and the procedure is as follows.

(a) Separate one auger and construct fill mortar walls on both sides.

(b) Perform construction in the center by overlapping both sides (indicated by dotted lines in the figure).

(e) Build-up interest of 5.

(d) During the root cutting work, shape the frame side of the underground continuous wall 1 and form a recess 3 at the erection section 5 position.

Thereafter, the underground part 2 of the frame is constructed by arranging reinforcement, pouring concrete, etc.

Figures 4 and 5 show the shape of the built-in portion *45 and the construction situation in the case where there are existing buildings adjacent to each other on both the left and right sides and a pillow-shaped 4 projecting left and right is to be formed.

The erection member 5 is made of parallel H-beams 6, as in the above-mentioned embodiment.
A mounting angle 12 is welded to the web of the H-section steel 6 along the longitudinal direction, and both ends of the partition plate 7 are welded to the mounting angle n. Further, reinforcing angles 13 are attached to the partition plate 7 at predetermined intervals in the longitudinal direction.

Note that the section steel 6 is not limited to the H section steel, but may also be a T section steel, an angle steel, or other special cross-sectional shapes.

In addition, the underground continuous wall 1 is not limited to the columnar type, but also mortar walls,
Concrete walls or other types with special hardened sides may also be used.

〔Effect of the invention〕

■ A recess is formed by a notch on the skeleton side of the underground continuous wall,
Because the underground part of the frame is housed in a pillow-shaped recess, even if there is an existing building nearby, the pillars and walls above ground can be brought as far outside as possible, making it possible to bring the exterior walls of the building closer together. It is possible to maximize the effective use of the site under the current conditions.

■ The built-in section side, which combines shaped steel and partition plates, doubles as a stress material for the underground continuous wall at the column location in the underground part of the frame, increasing the composite effect of the underground continuous wall and the frame.

■ When constructing an underground continuous wall, the erecting members can be erected in the same way as other stressed-side H-beams, so the underground section can be constructed using the same work as before.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of essential parts in an embodiment of the present invention.
Figure 2 is a longitudinal sectional view, and Figures 3 (a) and (b). (C), (d) are cross-sectional views showing the construction procedure, Figure 4 is a plan view showing an example of construction components, Figure 5 is a cross-sectional view showing the overall outline, Figure 6 (a), (b), (C
)' is a cross-sectional view showing a general construction procedure for a soil mortar projecting wall, the off-line view is a cross-sectional view of a conventional example, and FIG. 8 is a vertical cross-sectional view. 1... Underground continuous wall, 2... Underground part of the structure, 3... Concavity, 4... Pillow shape, 5...
Construction part side, 6...Shaped steel, 7...Partition plate, 8...H-shaped steel, 9...Existing building,
10... Above ground pillar, 11... Above ground wall, 12... Mounting angle, 13...
Angle for reinforcement. Figure 1 F Figure 2 Figure 4 ζ Figure 5

Claims (4)

[Claims] (1) In a building with an underground frame built inside a continuous underground wall, a recess is formed by a notch on the side of the frame of the continuous underground wall, and the pillar shape of the underground part of the frame is housed in the recess. A building that utilizes underground continuous walls. (2) A panel-shaped construction member made by connecting webs of parallel steel sections with a partition plate is installed inside the underground continuous wall before hardening, and after hardening, the frame side at the location of the construction member is cut out. A construction method for a building using an underground continuous wall, characterized by forming a recess in the underground continuous wall, and constructing a pillar-shaped underground part of the frame within the recess. (3) The construction method of a building using an underground continuous wall according to claim 2, wherein the section steel is an H section steel. (4) The construction method of a building using an underground continuous wall according to claim 2, wherein the partition plate is a steel plate.