JPH05340109A - Column jointing method in construction of new structure - Google Patents

Abstract

PURPOSE:To make it possible to join a permanent column with a temporary beam carried laterally and hence facilitate joint work in a column joint method in the construction of a new building. CONSTITUTION:A temporary beam 4b is installed to a temporary bearing pile at a position deviated by a specified quantity from a permanent column installation position where a temporary rack is built on the temporary beam. Then, after a foundation pile and the temporarily fit-up permanent beam are constructed, the temporary beam 4b is carried up to the permanent column installation position by using a transfer device. The lower part of a permanent column 23 is once turned into an adjustable state in every direction, say horizontally and vertically so that a lower part 11a of a column joint material for the temporary installation beam may be positioned with the upper part 23a of the permanent column 23 and then jointed with each other. The lower part of the permanent column 23 is installed to a foundation pile 22, fastened and fixed with anchor bolts 31. Mortar 32 is filled up around the foundation pile 22, thereby producing one piece structure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of joining pillars in constructing a new structure suitable for constructing a new structure on a traffic route such as a railway or a road or a similar structure.

[0002]

2. Description of the Related Art Generally, in a method of constructing a new building on a traffic road or a station building without impairing the function of the traffic road, in order to secure public safety and to secure safety, an underground construction work, Construction work such as retaining piles, removal of remaining soil, and lining of the platform will be done after the stop of feeding, for example, and the working time cannot be taken long. Since close work of the building continues, special attention is required in terms of safety, and a crane for suspending construction materials is required when constructing foundation piles, and the lifting height is limited in the underground work space. There are various obstacles such as difficulty in constructing large diameter or long foundation piles.

As a method of constructing a new building by eliminating such obstacles, temporary support piles are erected at an appropriate interval in an existing structure, and a temporary girder is permanently installed on the temporary support piles. The temporary girder is erected at a position displaced by a predetermined amount from the member installation position, a temporary gantry is constructed on the temporary girder, and the foundation pile and the main installation column are constructed from the temporary gantry, and then the temporary girder is moved to the main installation by a moving device. A method is known in which the structure is moved to the column member installation position to form a girder for a new structure, and the construction of the new structure is performed on the temporary gantry to enable the operation of the existing structure while constructing the new structure. Has been.

[0004]

However, in order to move the temporary girder horizontally with respect to the main installation column by a predetermined amount, align the upper part of the main installation column and the lower part of the joint material and weld them together, There is a problem that some dimensional errors in the height direction and the lateral direction are unavoidable and accurate alignment is difficult, and if they are forcibly joined, distortion may occur during welding.

The object of the present invention has been made in view of the above-mentioned drawbacks, and it is possible to join the main installation pillar and the laterally moved joint material without difficulty, and to join the pillars in the construction of a new building in which the joining operation is easy. To provide a method.

[0006]

[Means for Solving the Problems] The above problems of the method for constructing a new building capable of operating an existing structure according to the present invention are solved,
The gist to achieve the purpose is to operate existing structures and their ancillary facilities, and at the time of constructing a new structure on them, set up temporary support piles at appropriate intervals and A temporary girder to be the main structure is erected on the support pile at a position shifted by a predetermined amount from the installation position of the main pillar member, a temporary gantry is constructed on the temporary girder, and the foundation pile and the After constructing the main column to be temporarily fixed, the temporary girder is moved to the main column member installation position by the moving device, and the lower part of the main column is temporarily moved in the front-back, left-right direction and up-down direction from the foundation pile. In an adjustable state, the lower portion of the column splice material of the temporary girder and the upper portion of the main installation column are aligned and joined to each other, and then the lower portion of the main installation column is fully fastened to the foundation pile with anchor bolts. And fix it together and fill the mortar around it It consists in the.

[0007]

As described above, according to the method of joining columns in the construction of a new structure according to the present invention, when the temporary girder is diverted to the main girder, the lower part of the joint material of the temporary girder and the main girder are separated. For the alignment with the upper part, by temporarily fixing the main column, the bolt holes can be easily adjusted within the adjustment margin, and further unnatural stress and deformation do not occur.

[0008]

An embodiment of the present invention will be described below with reference to the accompanying drawings. 1 to 9 are explanatory views showing the construction sequence of the method for joining columns according to the present invention. FIG. 1 shows a situation in which temporary support piles 3, 3 ... Are erected on a platform 1 and a track 2 of a station, and temporary girders 4, 4 ... are erected on the temporary support piles 3, 3 ,. There is. Reference numeral 6 is a brace material for reinforcing the temporary support pile 3, and reference numerals 7 are wires.

The temporary girders 4 are main girders or lateral girders which will be described later. As shown in FIG. 2 to FIG. 3, the position where the temporary girder 4 is installed is a moving distance corresponding to the diameter of the foundation pile, that is, a position displaced by about 2 m in this case from the pillar member installation position 9 of the main installation. Set to 10. Then, as shown in FIG. 3, the temporary girders 4, 4, ... Are arranged in a lattice shape in the vertical and horizontal directions via joint materials 11, 11 ... Which are connected by bolts, nuts and the like.

Therefore, when seen in a plan view, there is a position 9 in which the permanently installed pillar member should be installed in the temporary girder 4 surrounded by the longitudinal girders 4a and the lateral girders 4b. become. In order to construct the temporary girders 4, 4 ... On the temporary support piles 3, 3, ... With the crane 5, the crane 5 is installed in an open space or the like, and after feeding stop (operation of transportation means). It will be done after the stop).

Next, the above-mentioned erected temporary girders 4, 4 are installed.
As shown in FIG. 3 and FIG. 4, lining support girders 12 are laid at appropriate intervals on the top of the ...
3 is laid. In this case, the installation position 9 of the main pillar member
In the portion (1), an opening having a size necessary for foundation pile construction is formed and the lining plate 13 is laid.

Then, as shown in FIG. 5, the lining plate 1
The crawler crane 14 is mounted on the table 3. At the pillar member installation position 9, from the lower surface of the temporary girder 4 to the surface of the platform 1, a temporary enclosure plate 15 is used to temporarily enclose the foundation pile. This is for safety measures during construction.

Next, with the crawler crane 14, the drill rod 1 equipped with the drill bit 16 for excavation.
7 is suspended, lowered from the opening of the lining plate 13, the rotary table 18 is installed, and the ground is excavated by the reverse circulation drill method while rotating the drill rod 17.

After the excavation is completed, the crawler crane 14 is used to install a rebar cage (not shown) manufactured in advance in a factory or the like in the excavation hole 19, and cast in-place concrete to form a foundation pile. 22 is constructed (see FIG. 6), and a permanent pillar 23 is erected on the foundation pile 22. Incidentally, reference numeral 8
Shows a stand pipe. By this construction method, the pillars 23, 23 ... Are erected at the pillar member installation positions 9, 9 ... And temporarily fixed by the anchor bolts 30 embedded in the foundation pile 22. In this example, the construction of the foundation pile by the reverse circulation drill method was explained, but the construction of the foundation pile using other cast-in-place pile construction methods or ready-made piles is also optional.

In this way, the crawler crane 14 is removed after the required number of columns 23 have been constructed. These operations are performed by the temporary girder 4, the temporary rail 12, and the lining plate 1.
It can be carried out day and night on the temporary gantry A composed of 3 etc., and does not obstruct the passage of trains and the like. Further, even during the construction of the foundation pile 22, the work holes are temporarily surrounded by the shroud 1.
Since it is surrounded by 5, the safety for the general public is secured. Next, after withdrawing the crawler crane 14,
The lining plate 13 and the lining receiving girder 12 are removed.

Further, the support rail 2 on the temporary support pile 3 is provided.
A hydraulic jack 25 as a moving device is fixed to the position 4. Then, the tip of the rod 26 of the hydraulic jack 25 is connected to the temporary girder 4 or the joint material 11. The splicing material 11 is a cross-shaped factory processed product.
A and 4b are bolted on site.

As shown in FIG. 6, the hydraulic jacks 25 are provided at four positions in the vertical direction of the drawing, but of course, the required number is provided depending on the size of the temporary girder 4. Then, the longitudinal girders 4a, the lateral girders 4b, and the joint members 11 of the temporary girders 4 are provided.
Lattice girder 2 that is integrated by connecting and with bolts and nuts, etc.
7 is pushed out or pulled in by the hydraulic jack 25,
The joint material 11 is moved to the pillar member installation position 9 so as to be located there. The amount of movement in this case is the amount of displacement of the temporary girder 4 with respect to the column member installation position 9, and is appropriately determined according to the diameter of the foundation pile.

By moving the lattice girder 27 by the hydraulic jack 25, the longitudinal girders 4a of the temporary girders 4 become main girders and the lateral girders 4b become transverse girders.
Then, the joining of the lower portion 11a of the joint material 11 and the upper portion 23a of the column 23 will be described.

In this joining method, as shown in FIG. 7, the pillars 23 are temporarily fixed to the foundation piles 22 in advance by the anchor bolts 30 embedded in the foundation piles 22. And joint material 1
1 by the hydraulic jack 25 shown in FIGS.
After being laterally aligned with the pillar 23, the erection pieces 31, 31, ... For welding work are welded and fixed to the upper portion 23a of the pillar 23 and the lower portion 11a of the joint material 11, as shown in FIG.

The erection piece 31 is shown in FIG.
As shown in (c) to FIG. 9, a total of four pieces are fixed to the upper surface 23a of the pillar 23 at two points on each of the opposite surfaces, and similarly, the lower portion 11a of the joint material 11 is also made to have two points on each of the opposite surfaces. Further, a total of four erection pieces 31 are fixed so as to face the four erection pieces 31 fixed to the upper portion 23a of the pillar 23.

Next, the lower portion of the pillar 23 is temporarily loosened by the nut of the anchor bolt 30 so as to be adjustable in the front-rear, left-right and up-down directions. Then, the column 23 is slightly lifted while applying a reaction force to the main girder 4a, the lower portion 11a of the joint material 11 and the upper portion 23a of the column 23 are aligned, and the erection piece 31 in the facing arrangement is attached to the contact plate 3
The columns 23 and the joint material 11 are positioned by welding them together using 1a (see FIG. 8). It should be noted that the semicircular hole notch 31b formed by disposing the erection pieces 31 facing each other
Is a notch provided for performing a spot welding operation.

Then, the end of the upper portion 23a of the column 23 and the end of the lower portion 11a of the joint material 11 are welded. In this case, in order to prevent the columns 23 and the like from being deformed and distorted by the heat of welding, the opposite surfaces of the erection piece 31 that are not fixed are welded first, and then the one side with the erection piece 31 is welded. To do. After that, the erection piece 31 is completely removed from the pillar 23 and the joint material 11. Then, the other side with the remaining erection piece 31 is welded.

When the joining of the pillar 23 and the joint material 11 is completed in this way, the nut of the anchor bolt 30 is reattached and fastened, and the non-shrink mortar is attached to the head of the foundation pile 22 as shown in FIG. Fill 32. In this way, the pillar 23 and the joint material 11 are accurately aligned and assembled. After that, the moving device 25 is removed, a floor form is installed, and then concrete is placed to construct a floor slab. Further toward the upper side, pillars and beams are constructed by a known method using this floor slab as a working floor, and a new building (not shown) is constructed on the track 2 and the platform 1.

[0024]

As described in detail above, the method of joining pillars according to the present invention allows the temporary structure to be used when constructing a new structure on an existing structure and its associated facilities while operating them. After constructing the foundation pile and the main pillar temporarily fixed to this from above, move the temporary girder to the main member pillar installation position by the moving device, and move the lower part of the main pillar from the foundation pile back and forth once. The lower part of the joint material of the erection girder and the upper part of the main installation column are aligned and joined to each other after being adjusted in the left-right direction and the vertical direction, and then the lower part of the main installation column is anchored to the foundation pile. Since it is a method of permanently fastening and fixing with mortar and integrating it with mortar, when joining the temporary girder to the main girder etc. of the main construction, the lower part of the joint material and the upper part of the main construction girder are joined. Work becomes easy and highly accurate assembly is possible. It becomes shorter construction time without rework bonding operation so diverted digits as the 設桁, also, is not distorted not become unreasonable positioning at the junction.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing how a temporary girder is installed.

FIG. 2 is a plan view showing an arrangement state of temporary girders.

FIG. 3 is a plan view showing the arrangement of temporary girders.

FIG. 4 is a side sectional view of the temporary gantry.

FIG. 5 is an explanatory diagram showing a state in which a foundation pile is being constructed.

FIG. 6 is an explanatory diagram showing a state of moving a temporary gantry.

7 (a) to (d) are explanatory views showing a procedure for joining a main pillar and a splice material for a temporary girder.

FIG. 8 is a partially enlarged front view of the joint between the main pillar and the joint material.

9 is a sectional view taken along line BB of FIG.

[Explanation of symbols]

1 platform, 2 tracks, 3 temporary support piles, 4
Temporary girder, 5 cranes, 9 pillar member installation position, 10 position shifted by a predetermined amount, 11 joint material, 12 lining support girder, 1
3 lining plate, 15 temporary enclosure plate, 19 excavation hole, 22 foundation pile, 23 pillar, 25 moving device, 27 lattice girder, 30
Anchor bolt, 31 erection piece, 32 non-shrink mortar, A Temporary gantry.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Seto 27-D303 Inaridai, Itabashi-ku, Tokyo (72) Inventor Katsuhide Kawasaki 3-1-510, Mukaihara-cho, Kashiwa-shi, Chiba (72) Inventor Masayoshi Yasumoto 2-7-6 Minami Asaya, Suginami-ku, Tokyo

Claims (1)

[Claims] 1. While operating an existing structure and its associated facilities, when constructing a new building on them, temporary support piles are erected at appropriate intervals, and the temporary support piles are provided with a book. A temporary girder to be a construction structure is erected at a position shifted by a predetermined amount from the installation position of the main pillar member, a temporary gantry is constructed on the temporary girder, and it is temporarily fixed to the foundation pile and this from this temporary gantry. After constructing the permanent pillar, the temporary girder is moved to the permanent pillar member installation position by the moving device, and the lower portion of the permanent pillar can be temporarily adjusted in the front-rear, left-right direction, and the vertical direction from the foundation pile. And the lower part of the column joint material of the temporary girder and the upper part of the main installation column are aligned and joined to each other, and then the lower part of the main installation column is fixed to the foundation pile by final tightening with anchor bolts and Characterized by filling mortar around it and integrating it Method of joining pillars in construction of new building.