JP2817591B2 - Construction method of steel reinforced concrete building - 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 of constructing a steel reinforced concrete building for constructing a high-rise building in which earthquake-resistant walls are arranged in a span direction.

[0002]

2. Description of the Related Art In a high-rise apartment house or the like, a method of constructing a steel-framed reinforced concrete building in which the seismic elements in the span direction and the girder direction are a shear wall and a frame of columns and beams, respectively, is known. Each time a steel column is erected, the joints are placed on each layer and the upper layer is constructed by placing columns, beams, walls and floor slabs and placing concrete from the lower layer, and the length of several layers Steel pillars are first erected and connected to the top of the building, connected, and then laid out from the bottom to the top, and concrete is poured.

[0003] In the former method, since the construction of the steel column is divided into layers, the temporary construction cost of a crane and the like tends to increase, and the construction period tends to be longer. The latter method requires the steel column having a longer side. It is necessary to lay a steel beam with a large cross section to ensure independence, which increases construction costs. In addition, steel columns are required to work at heights, leading to higher costs for safety measures.

[0004] The present invention has been made in view of the above background, and proposes a construction method that reduces the construction cost and the construction period.

[0005]

According to the present invention, a steel column is provided with a length of several layers, and when the number of layers is one section, at least one is obtained.
The construction period is shortened by arranging reinforcing bars and concrete every time a steel column for a node is erected, and the steel column is self-supported by using repeatedly used temporary beams and braces embedded in the earthquake-resistant wall. The construction cost will be reduced by ensuring safety.

[0006] The steel columns are opposed to each other in the span direction on the foundation, are erected in parallel in the girder direction, and braces are erected in the span direction.

The temporary beam is erected between the tops of the steel columns facing in the span direction, and is cut off from the steel columns every time the construction to the layer below the temporary columns is completed, and is replaced to the upper layer side.

[0008] The brace is erected in a frame surrounded by opposing steel columns and temporary beams, and buried in the concrete of the earthquake-resistant wall. Temporary beams and braces compensate for the decrease in stability due to the length of the steel column having several layers, and the stability of the steel column is ensured.

After the brace is erected, up to the lower layer of the temporary beam, a steel beam is erected between the steel columns parallel to each other in the girder direction, and around the steel column and around the steel beam, between each layer and between the opposing steel columns. After placing the concrete and placing concrete, the temporary beams are separated from the steel columns, and furthermore, the steel columns are erected on the steel columns and connected to each other, and between the newly installed steel columns opposing in the span direction. The skeleton is constructed by repeating the procedure of erection of temporary beams and new braces separated from the lower steel columns.

[0010] The construction period can be shortened by the construction of the skeleton proceeding in units of several layers corresponding to the length of a steel column of one node or several nodes. In addition, the stability of a steel column with a length of several layers is rebuilt and the brace secures it, so there is no need for a special member to make the steel column self-supporting. The accompanying costs are unnecessary, and the increase in construction costs is suppressed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a steel column 1 having at least one node and having a length of several layers is erected on a foundation 2, and this is self-supported by a temporary beam 3 and a brace 4 erected in the span direction. This is a method of constructing a steel reinforced concrete building by repeating the procedure of arranging reinforcing bars up to the layer below the temporary beams 3 and placing concrete 7 in the state. Steel column 1,
Reference numeral 1 denotes a shear wall 5 having a built-in brace 4 in the span direction, and a column / beam frame formed by a steel beam 6 in the girder direction.

The construction procedure will be described.

First, as shown in FIGS. 1 and 2, the steel columns 1 are opposed to each other in the span direction, are erected in parallel in the row direction, and are erected, and the temporary beams 3 are provided between the tops of the steel columns 1, 1 opposed in the span direction. And a brace 4 is erected in a frame surrounded by the opposing steel columns 1 and 1 and the temporary beam 3, and the steel column 1 is self-supported until the construction below the temporary beam 3 is completed. The installation adjustment of the steel column 1 can be performed by connecting a turnbuckle 41 to a part of the brace 4 as shown in the figure.

In the embodiment, the length of three layers is given to the steel column 1, and when the three layers are made into one section, every time the steel column 1 of one node is erected, reinforcing bars and concrete 7 are poured. Although the case is shown, the steel columns 1 for several nodes may be erected and connected, and the reinforcing bars and the concrete 7 may be placed in a state where the steel columns 1 are self-supported by the temporary beams 3 and the braces 4. FIG. 1 shows the stage where the steel column 1 of the second section from the foundation 2 has been erected and the frame work for six layers has been completed.

In parallel with the installation of the brace 4 in the span direction, up to the layer below the installation position of the temporary beam 3, the installation of the steel beam 6 between the steel columns 1, 1 arranged in the row direction,
Assembling the column reinforcement around the steel column 1 and the beam reinforcement around the steel beam 6, the slab reinforcement of each layer and the wall reinforcement to the opposing steel columns 1, 1 and the assembling of the formwork are performed for each layer. , Concrete 7
For each layer. The brace 4 is buried in the concrete 7 of the earthquake-resistant wall 5.

The concrete 7 is a floor slab 8 below the position where the temporary beam 3 is erected. In the case of the embodiment, one section of the steel column 1 has a length of three layers. Until,
In the second run, the floor slab 8 on the seventh floor is cast for each layer. In FIG. 2, reference numeral 10 denotes a reinforced concrete beam.

Thereafter, the temporary beam 3 is cut off from the steel columns 1 and 1, and furthermore, the steel columns 1 'are erected on the steel columns 1 and connected to each other, and the newly installed steel columns 1 opposed in the span direction are connected. The procedure of erection of the temporary beam 3 separated at the lower layer between the tops of the ', 1' and erection of a new brace 4 'under the temporary beam 3 is repeated to the top floor, and a frame is constructed.

After the construction is completed to the top floor, the temporary beam 3 is removed or left as it is and covered with reinforced concrete.

Although the earthquake-resistant wall 5 is structurally established even in the case of a reinforced concrete structure, as shown in FIG. 3, which is a cross-sectional view taken along the line xx in FIG. The plate 9 is disposed between the temporary beam 3 and the floor slab 8 or at the position of the removed temporary beam 3.

[0020]

According to the present invention, a steel column is given a length of several layers,
In the case of a knot, at least one steel column of at least one knot is erected every time a steel column is erected, so that the construction of the skeleton proceeds in units of several layers, and the construction period can be shortened.

[0021] In addition, since the self-sustainability of the steel column is ensured by using the temporary beam repeatedly used and the braces embedded in the earthquake-resistant wall, no special member is required for ensuring the stability of the steel column. The cost associated with the installation of the member is not required, and the construction cost can be reduced.

[Brief description of the drawings]

FIG. 1 is an elevational view in a girder direction showing a construction procedure of the present invention.

FIG. 2 is a plan view of a building.

FIG. 3 is a sectional view taken along line xx of FIG. 2;

[Explanation of symbols]

1, 1 '... steel column, 2 ... foundation, 3 ... temporary beam, 4,
4 ': brace, 41: turnbuckle, 5: earthquake-resistant wall, 6: steel beam, 7: concrete, 8: floor slab, 9: plate, 10: reinforced concrete beam.

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Hiroshi Moriguchi 4-51, Otacho, Naka-ku, Yokohama-shi, Kanagawa Prefecture Kashima Construction Co., Ltd. Yokohama Branch (56) References JP-A-63-125743 (JP, A) JP-A-56-25533 (JP, A) JP-A-47-33415 (JP, A) JP-A-5-17996 (JP, A) JP-A-57-187356 (JP, U) (58) Int.Cl. ⁶ , DB name) E04G 21/14

Claims (1)

(57) [Claims] 1. A steel column having a length of several layers on a foundation,
Stand in the span direction, parallel in the column direction,
A temporary beam is erected between the tops of the steel columns opposed in the span direction, and a brace is installed in a frame surrounded by the opposed steel columns and the temporary beams. After laying steel beams between the parallel steel columns, laying concrete around the steel columns and around the steel beams, each layer, and between the opposing steel columns, placing concrete, then separating the temporary beams from the steel columns, The procedure of erecting the steel columns on the steel columns and connecting them to each other, erection of this newly installed temporary beam and a new brace between the newly installed steel columns opposed in the span direction, was repeated. Construction method of steel-framed reinforced concrete building for building frame.