JP2867080B2 - Basement building construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a basement frame of a ramen frame using straight columns.

[0002]

2. Description of the Related Art As shown in FIGS. 8 and 9, most of the basement frames have a rigid frame structure, and columns 30 and girders 31 are rigidly connected.

[0003] In many cases, the driving of the foundation pile 32 and the pillar 3
The construction of the underground skeleton is carried out while excavating the land from the first floor to the lowest floor.

In this reverse driving method, first, a hole of a pillar having a required depth is excavated in the ground, a cast-in-place concrete pile is cast at the bottom of the excavation hole, and then a steel pipe provided with a bracket for each required floor height. Insert a concrete pillar with a concrete pillar into the drill hole,
The lower end is buried in cast-in-place concrete foundation piles, and columns are built vertically.

[0005] The connection between the straight pillar and the girder is performed via brackets provided in advance for each required floor, but prior to the connection between the bracket on the first floor and the girder located above the ground,
Next, the excavation and removal of the soil and the joining of the exposed bracket and the girder are repeated sequentially downward to complete the basement frame of the ramen frame.

[0006]

The conventional construction method has the following problems because a straight pillar provided with a bracket is built in the ground.

[0007] The bracket requires time and effort to transport and build the pillar.

[0008] Since the mounting direction of the pillar is determined by the bracket, it takes time to install the pillar at the time of building on the foundation pile and to mark the plane, x, and y directions.

[0009] Since the length of the bracket projecting from the column is predetermined, vertical accuracy of the column is required. Even at a slight deviation, the error is enlarged at the top of the column, making it difficult to accommodate the girder. If the interval between the brackets of the columns is longer than the set interval by 20 mm or more, it becomes impossible to accommodate the girder, and a girder suitable for the interval must be newly manufactured.

[0010] It is impossible to know whether or not the interval between the brackets of the columns is appropriate only after excavation from the ground by excavation. When the interval is significantly different from the set length and the joining of the girder is impossible, However, the construction of the girder in that part must be interrupted, and the work process must be changed, sometimes leading to a delay in the construction period.

Since the problem in the conventional method is caused by a bracket previously provided on the trussed pillar, in the present invention, the member for joining the trussed pillar and the girder is separated from each other, The object is to solve the problem by mounting the joining member to the straight pillar after the pillar is vertically built in the excavation hole.

[0012]

The feature of the present invention according to the above object is that a steel pipe concrete pillar is used as a pillar of a basement skeleton, and the inner diameter of the pillar is larger than the outer diameter of the pillar after the construction of the pillar. The required number of joint rings consisting of a steel pipe ring main body that forms the required clearance between the column and the column and gussets that have the same cross-sectional shape as the steel beam and are integrally formed on the outer four sides of the ring main body, After the fitting ring is inserted into the upper part of the column and the joint ring is placed on a support member that is retrofitted around the joint between the column and the beam on each floor, the rigid connection between the gusset and the steel beam, and the filling of the clearance The joint ring is fixed to the column, thereby forming the basement frame composed of the timber column and the steel beam into a ramen.

[0013]

According to the above-mentioned construction method, the trussed pillar and the joint ring are separate bodies, and the joint ring can be freely rotated in the horizontal direction before the steel beam is joined to the vertically erected trussed pillar. This makes it easy to correct the positions of the planes x and y, and the clearance between the column and the ring body can correct the gusset interval between the columns to some extent, so that the steel beam can be accommodated as designed. Will be

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a joint ring 2 to be inserted into a steel column 1 made of a steel pipe concrete column has an inner diameter larger than an outer diameter of the column and forms a required clearance 3 between the column and the column. It comprises a ring main body 4 made of a steel pipe and gussets 5 integrally formed on four outer sides of the ring main body.

The gusset 5 includes upper and lower flanges 7 and 7 horizontally projecting from diaphragms 6 and 6 formed on the upper and lower outer periphery of the ring main body 4, and a web integrally formed with the flanges 7 and 7 and the ring main body 4. 8, the cross-sectional shape and dimensions of which are the same as those of the steel beam 9 serving as a large beam.

The joint ring 2 is inserted from the top end of the pillar 1 around the straight pillar 1 and is mounted on a support member 10 attached to the periphery of the joint between the pillar and the beam to be attached to the pillar. As shown in FIG. 2, the joint with the steel beam 9 is maintained while maintaining the clearance 3.
After that, the clearance 3 is filled with the filler 12, and the connection ring 5 is fixed to the straight pillar 1.

Next, an example of construction of a basement frame using the above-mentioned joint ring 5 will be described in order with reference to FIGS.

FIG. 4 First, a hole 2 of a pillar having a required depth
1 is excavated, and a foundation pile 22 made of cast-in-place concrete is placed at the bottom of the hole.

Next, the straight pillar 1 having the height of the third basement floor is inserted into the pillar hole 21. At this time, the level, the construction check, etc. are carefully performed, the lower end is embedded in the foundation pile 22, and the timber pillar 1 is vertically built.

When the construction of all the columns of the basement frame is completed, the above-mentioned connecting rings 2a and 2b for the two basement floors are inserted into the upper part of the timber column 1, and the lower side of the joint between the column and the beam on the first floor. Temporarily fix around the pillar by any means.

After the temporary fixing, the level of the joint between the column and the beam on the first floor is set, and the support member 10 is horizontally retrofitted around the column at the lower flange level of the steel beam on the first floor.

After the support member 10 is attached, the joint rings 2 of the first floor are inserted and placed on the support member 10 from the upper ends of the columns, while the joint rings 2a and 2b for the two basement floors are kept as they are.

Joining ring 2 and support pillar 1 on support member 10
Although not shown in the figure, there is the clearance 3, so that the joining ring 2 is positioned within the allowable range of the clearance 3.

This positioning is performed by rotating the joining ring 2 in the plane x and y directions (see FIG. 8), and the displacement of the gusset 5 is performed by moving the joining ring 2 laterally.

FIG. 5 If the directions of the gussets 5 and 5 and the gusset intervals are correctly set by the positioning, the steel beams 9 on the first floor are suspended between the gussets, and the web joint plate 11 is attached as shown in FIG. To join the steel beam 9 to the web 8 of the gusset 5. Although not shown in the drawing, the support member 10 and the lower flange of the steel beam 9 are welded after the joint.

After the joint is completed, a filler 12 such as mortar is injected into the clearance 3 as shown in FIG. 2, and the joining ring 2 is fixed to the column 1 by the filler 12. The filler is not limited to the mortar, and may be any material that has a high compressive strength and can be reliably injected into the clearance.

When the construction on the first floor is completed, the soil is dug down to the lower side of the first basement floor, and only the joint ring 2b on the second basement floor is lowered below the joint between the column and the beam on the first basement floor, and re-mounted around the column. Temporarily fix. Then, set the level as in the case of the first floor, and around the column at the lower flange level of the steel beam on the first basement floor,
The support member 10a is horizontally post-welded.

The joining ring 2a is lowered onto the supporting member 10a, and the joining ring 2a is positioned in the same manner as in the case of the first floor.

FIG. 6 After positioning, the steel beams 9a on the second basement are suspended and jointed, and the joining ring 2a is fixed by filling with mortar to complete the construction on the second basement.

Next, the soil is dug down to the lower side of the second basement floor. After the level is set, the supporting member 10b is horizontally retrofitted and welded around the column at the lower flange level of the steel beam on the second basement floor. Then, the joining ring 2b is lowered onto the support member 10b to perform positioning.

FIG. 7 As described above, the steel beams 9 on the second basement floor
b and fixing of the joint and the joint ring 2b to complete the construction of the second basement, and further excavation of the soil to the upper end of the foundation pile 22, and the basement of the ramen frame shown in FIG. 8 and FIG. Complete the construction of the frame.

[0032]

As described above, according to the present invention, after a trussed pillar is erected in the ground, the trussed pillar and the steel beam are rigidly joined to each other through a joint ring inserted into the pillar. In addition, the joint ring is formed integrally with the steel pipe ring body, whose inner diameter is larger than the column outer diameter and forms the required clearance between the column and the outside of the ring body with the same cross-sectional shape as the steel beam Gussets, and the position can be corrected by the clearance generated between the columns before joining, so that the following effects can be obtained.

Since the trussed pillar and the joining ring are separate bodies, transportation and erection are easier than in the case of the conventional pillar having a bracket, and it is not necessary to particularly consider the directionality of the trussed pillar at the time of erection. Therefore, the construction work becomes extremely simple, and the work time is greatly reduced.

Since the joint ring can be freely rotated with respect to the pillar by the clearance, it is not necessary to strictly determine the orientation of the gusset at the time of insertion and the joint ring can be inserted with an approximate register. Even if it is inserted after installation, no trouble is required for the work.

The level setting of the joining ring is performed after excavating the soil, and the level is secured by a support member attached to the lower flange level of the steel beam, so that it is accurate and easy to set.

Since the joining ring is rotatably mounted on the support member, the position of the plane x, y can be easily corrected by the rotation, and the setting means can be more easily compared with the case of a straight column having a bracket. Simplified.

Since the clearance between the trussed pillar and the joining ring can be set arbitrarily by design, it is easy to absorb left and right errors when attaching a steel beam to be a large beam. Nothing is possible.

The fixing of the joining ring is performed by filling the clearance with a filler, so that it is simpler and more reliable than the case of fixing with a bolt or welding.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a timber column, a joint ring, and a steel beam used in a basement building construction method according to the present invention.

FIG. 2 is a vertical cross-sectional view showing a joining state between a straight pillar and a steel beam via a joining ring.

FIG. 3 is a plan view of the same.

FIG. 4 is an explanatory diagram of a process from the installation of a tall pillar to the attachment of a support member on the first floor.

FIG. 5 is an explanatory diagram of a process from joining a steel beam on the first floor to setting a joining ring on the first basement floor.

FIG. 6 is a process explanatory view from joining of a steel beam on the first basement floor to setting of a joining ring on the second basement floor.

FIG. 7 is an explanatory view of a process from joining of steel beams on the second basement floor to excavation on the third basement floor.

FIG. 8 is a schematic plan view of a basement skeleton.

FIG. 9 is a schematic sectional view of a basement skeleton.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 straight pillar 2 joint ring 3 clearance 4 ring body 5 gusset 6 diaphragm 7 flange 8 web 10 support member 11 web joint plate 12 filler

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) E02D 29/045 E04C 3/32 E21D 13/00 E04B 1/24

Claims (1)

(57) [Claims] 1. A steel pillar concrete pillar is used as a pillar of a basement skeleton, and after the construction of the pillar, the required clearance is formed between the pillar and the pillar having an inner diameter larger than an outer diameter of the pillar. The required number of joint rings consisting of a steel pipe ring body and gussets having the same cross-sectional shape as the steel beam and integrally formed on the outer four sides of the ring body are inserted into the upper part of the trussed pillar, and the joint ring is attached to each floor. After being mounted on a support member that is retrofitted around the joint between the column and the beam, a rigid connection between the gusset and the steel beam,
A basement building construction method, comprising fixing a joint ring to a column with a filler in the clearance, and forming a straight column and a steel beam into a rigid frame.