JPS6228263B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides for
This article relates to the structure and correction method of foundation foundations that can easily correct such uneven settlement.

Originally, it is essential that buildings be designed to avoid uneven settlement. However, there is a serious shortage of land in recent years, and as a result, residential land is being developed even on extremely soft ground.It is difficult to completely prevent such uneven subsidence, and subsidence accidents occur frequently. It is an undeniable fact that this is happening.

Conventionally, as shown in Fig. 1, the method for correcting such uneven settlement is to excavate the area around the sunken foundation 1, drive support piles 2, and then attach a bracket to the support piles 2. Place jack 4 on top of 3,
A so-called underpinning method has been used in which concrete is poured after the foundation 1 is lifted up by the jack 4. However, this construction method requires extremely large-scale work such as digging around the foundation and driving piles. Depending on the site, pile driving may not be possible, or the floor may need to be dismantled, resulting in a huge amount of work. This method has the drawback of requiring time and money, and also has the disadvantage that in extremely soft ground, even if piles are driven, a sufficient support layer cannot be obtained unless the pile is several tens of meters below the ground. Therefore, as an alternative to this underpinning construction method, it is possible to attach a lifting platform to the pillars of the building with bolts and jack up this lifting platform to lift only the building itself. The work of screwing bolts into the frame is troublesome, especially in steel frameworks, where special bolt holes must be drilled to insert the bolts, and special bolts must be prepared for fixation. There are some drawbacks that you should keep in mind. A method of inserting a lifting plate into the lower surface of the column has also been considered, but this has the disadvantage that lifting becomes difficult if there is no clearance for inserting the plate.

The present invention has been made with the aim of eliminating the drawbacks of such conventional construction methods.

In order to achieve such an object, in this invention, a framework formed on a rectangular frame by upper and lower horizontal members and left and right vertical members is attached to the horizontal part through anchor bolts on the upper part of the cloth foundation. fix the parts,
In a building in which the vertical members of each adjacent frame assembly are fastened together with bolts inserted into these vertical members, and an external wall member is attached to this frame assembly, the external wall member is removed and the vertical member tightening bolts are used. After installing a lifting stand and arranging this lifting stand so as to protrude outward from the cloth foundation, the lifting stand is jacked up to lift the framework, and stuffing is applied to the lower part of the framework to make it uneven. The structure of the present invention, which is characterized by correction, will be described below based on the illustrated embodiment.

First, the general structure of a building in which a framework is installed on a cloth foundation will be explained. In Fig. 2, 11 is a cloth foundation, and on this cloth foundation 11 there are The buried anchor bolt 12 protrudes. Therefore, 13 is an inverted T
This base plate 13 is shaped like a letter, and this base plate 13 is connected to the anchor bolt 12 described above.
It is tightened and fixed with a nut 14. 15,15
shows a framework formed in a frame shape by a vertical C channel member 16 and a horizontal C channel member 17, and the frameworks 15 on both left and right sides,
15 is a vertical piece 13a of the base plate 13;
As shown in FIG. The vertical C channel members 16, 16 of each of the mutually adjacent frame sets 15, 15 are tied together, and the frame sets 15, 15 are fixed onto the cloth foundation 11. At this time, the anchor bolts 12 for fixing the base plate 13 protrude upward from the horizontal C channel members 17, 17, as shown in FIG. On the other hand, reference numerals 19 and 19 shown in FIG. 3 are external wall panels 23 in which surface plates 21 and 21 are attached to both the front and back surfaces of the heat insulating material 20, and iron frames 22 and 22 are similarly interposed at the ends of the heat insulating material 20. , 23 are frames for the inner wall, and the outer wall panel 19 and the frame 23 for the inner wall are connected to the bolts 24 inserted between the two frame assemblies 15, 15 through the holding plates 25, 25 to the nuts 26. , 26, it is fixed to the frame assembly 15. Therefore, the outer wall panel 19
is the one nut 26 and the holding plate 25
It can be removed from the frame assembly 15 by removing. Reference numeral 27 indicates a joint material packed into the gap between both the outer wall panels 19, 19.

Now, to explain how to correct uneven settlement in the structure of the building as described above, first, after removing the joint material 27, remove the nuts 26 and the holding plate 25 that attach the outer wall panel 19. Remove the outer wall panels 19, 19, and loosen or remove the nuts 14 of the anchor bolts 12 as shown in FIG. Reference numerals 28 and 28 shown in FIG. 4 and FIG.
The bolt 18 fixing the to the base plate 13
The second piece is fixed together with the frame 15, and the other piece is made to protrude along the longitudinal direction of the cloth foundation 11. Next, as shown in FIG. 5, a long lifting platform 2 having a U-shaped cross section is attached to the outside surface of the other side of the platform mounting bracket 28 that has protruded in this way.
9 are fixed with bolts 31 with spacers 30, 30 held between them, and thereby the lifting platform 29 is attached to the framework 15 in a state of protruding outward from the cloth foundation 11. After that, as shown in FIG.
4 and lift the lifting table 29 by operating the jack 34, the frame assembly 15 and the base plate 13 are lifted.
After applying a spacer 32 and filling such as mortar to the lower surface of the base plate 3, the nuts 14 of the anchor bolts 12 are tightened to fix the base plate 13. Finally, the lifting platform 29 and the mounting bracket 28 are removed, and the outer wall panel 19 is attached again to complete the construction.

The present invention has the above-mentioned configuration, and according to the present invention, it is only necessary to remove the outer wall panel, attach a lifting platform, and jack it up.
There is no need for large-scale construction work such as digging around the foundation and driving piles, which is required in the past, and it can be done in an extremely short time and at low cost, and there is no need for large equipment such as pile drivers or lifting equipment. , it is easy to carry in equipment, and the work can be carried out easily even in narrow spaces. Moreover, in the present invention, when the lifting platform is attached to the frame assembly, it is fixed using bolts that tighten the vertical members of each frame assembly. It is easy to screw in the bolt, and even in the case of a steel framework, there is no need to open a bolt hole to insert the bolt. Of course, since it is not inserted into the lower surface of the frame, the work can be done even if there is no such gap for insertion.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the foundation showing the conventional construction method.
Figure 2 is an exploded perspective view showing the structure of the building's framework installation, Figure 3 is a horizontal sectional view showing how the exterior wall panels are installed, Figure 4 is a perspective view showing how to install the lifting platform, and Figure 5 is a perspective view showing how to install the lifting platform. Similarly, FIG. 6 is a horizontal cross-sectional view showing the installed state, FIG. 6 is a cross-sectional view showing the method of lifting the framework, and FIG. 7 is a front view showing the state in which the framework is lifted and unevenness has been corrected. 11...Cloth foundation, 12...Anchor bolt, 1
5... Axis assembly, 16... Vertical C channel member, 17... Horizontal C channel member, 18...
... Bolt, 19 ... External wall panel, 29 ... Lifting platform, 32 ... Spacer.

Claims (1)

[Claims] 1 A framework formed on a rectangular frame by upper and lower horizontal members and left and right vertical members is fixed to the upper part of the cloth foundation via anchor bolts, and the vertical members of each adjacent framework are fixed to the upper part of the cloth foundation. In a building in which external wall members are attached to these vertical members using bolts inserted into these vertical members, the external wall members are removed and a lifting platform is installed using the vertical member tightening bolts, and this Unfair settlement characterized by arranging a lifting platform in a state of protruding outward from the cloth foundation, then jacking up the lifting platform to lift the framework, and applying padding to the lower part of the framework to correct unevenness. A method for repairing damaged buildings.