WO2014156072A1 - Hybrid structure and construction method for same - Google Patents
Hybrid structure and construction method for same Download PDFInfo
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- WO2014156072A1 WO2014156072A1 PCT/JP2014/001578 JP2014001578W WO2014156072A1 WO 2014156072 A1 WO2014156072 A1 WO 2014156072A1 JP 2014001578 W JP2014001578 W JP 2014001578W WO 2014156072 A1 WO2014156072 A1 WO 2014156072A1
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- column
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- concrete column
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/22—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material with parts being prestressed
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/024—Structures with steel columns and beams
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/025—Structures with concrete columns
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
- E04B1/2403—Connection details of the elongated load-supporting parts
- E04B2001/2448—Connections between open section profiles
Definitions
- the present invention relates to a hybrid structure in which a prestressed concrete column and a steel beam are combined, and a construction method thereof.
- the pillar is made of concrete and the beam is made of steel (Patent Document 1).
- the present invention has been devised in view of the above circumstances, and an object of the present invention is to reduce the cross section of a column in a hybrid structure building in which a prestressed concrete column and a steel beam are combined, and An object of the present invention is to provide a hybrid structure and its construction method that are advantageous in enhancing performance.
- the present invention provides a hybrid structure in which a concrete column and a plurality of steel beams are combined, and the concrete is provided at a plurality of locations spaced in the circumferential direction of the outer peripheral portion of the upper end portion of the concrete column.
- a plurality of PC steel members extending upward from the lower part of the column protrude upward, and a portion where the plurality of steel beams are coupled to an upper end portion of the concrete column is a column beam joint, and the column beam joint
- the portion includes a steel beam portion to which a plurality of the steel beam beams are coupled, upper and lower band plates attached to the upper and lower sides of the steel beam portion, and a plurality of the steel frames attached between the upper and lower band plates.
- the concrete column has a plurality of insertion holes through which the upper band plate is inserted, and the column beam joint has the lower band plate placed on the upper end of the concrete column.
- the plurality of PC steel members protruding from the upper end of the steel plate are inserted through the insertion holes and protrude upward from the upper band plate, and the concrete columns and the column beams are applied by applying a tensile force to the plurality of PC steel materials.
- a prestress is applied to the joint.
- the present invention is also a method for constructing a hybrid structure in which a concrete column and a plurality of steel beams are combined, and the concrete column is formed from a plurality of locations spaced in the circumferential direction of the outer peripheral portion of the upper end portion of the concrete column.
- a plurality of PC steel members extending upward from the lower part of each of the steel beams are protruded upward, and the plurality of steel beams are coupled to a column beam joint where the plurality of steel beams are coupled to an upper end portion of the concrete column.
- a plurality of insertion holes that are inserted into the plurality of PC steel members The plurality of PC steel members projecting from the upper end portion of the concrete column, wherein the lower band plate of the column beam joint is placed on the upper end portion of the concrete column.
- the present invention since prestress can be easily and reliably introduced from each column-beam joint to the concrete column directly therebelow, it is possible to easily and reliably improve the axial strength and bending strength of the prestressed concrete column. Therefore, the cross-sectional area of the column can be reduced, which is advantageous in reducing the weight of the building and reducing the cost of the building.
- the PC steel material is inserted into the beam-column joint and built into the column-column-beam joint, the amount of concrete formwork is reduced, simplifying the frame work and shortening the work period of the frame work. This is advantageous in reducing cost and cost.
- the column beam joint is provided with upper and lower band plates and a surrounding plate on its outer surface, the shear force of the column beam joint is improved, which is advantageous for exhibiting high earthquake resistance performance in the column beam joint.
- (A) is a plan view of the beam-column joint
- (B) is a plan view of the beam-column joint with the upper band plate removed
- (C) is a CC cross-sectional view of (A). It is explanatory drawing which mounts a column beam junction part in the upper end part of a concrete pillar.
- (A), (B) is a perspective view of the modification of a column beam junction part, respectively.
- (A), (B) is explanatory drawing of the modification of a column beam junction part
- (C) is explanatory drawing of the modification of a concrete column and a column beam junction part.
- the concrete pillar 10 is erected on the floor 18, for example.
- the concrete pillar 10 has a rectangular cross section, and three PC steel wires 22 protrude upward from the four corners of the upper end portion 10A of the concrete pillar 10, respectively.
- the number of PC steel wires 22 is appropriately determined according to the building.
- the lower end of each PC steel wire 22 is connected to the foundation via, for example, a mechanical joint 24 or connected to the PC steel wire 22 of the concrete pillar 10 on the lower floor.
- the portions other than the lower end of the PC steel wire 22 are passed through a sleeve so that the prestress can be applied to the concrete column 10 and the column beam joint 14 later, as will be described later. It is designed not to be completely in
- the column beam joint 14 is a portion where the steel beam 12 is coupled to the upper end portion 10 ⁇ / b> A of the concrete column 10.
- the column beam joint 14 includes a steel beam portion 12A, upper and lower band plates 30, a surrounding plate 32, concrete 34, and insertion holes 36A and 36B.
- the cross-sectional shape of the concrete column 10 and the outline of the beam-column joint 14 in plan view are equal and both are rectangular, and the shape is the same, and the concrete column 10 and the beam-column joint 14 It is advantageous for laying out various other members including the reinforcement of the upper floor, the formwork, etc., by making the shape continuous in the vertical direction.
- the steel beam 12 is, for example, an H-shaped steel including a web extending in the vertical direction and upper and lower flanges positioned above and below the web and extending in the horizontal direction.
- the steel beam 12 is a steel beam portion 12A in which a plurality of steel beams 12 are connected in a cross shape in plan view at the column beam joint 14.
- the upper and lower band plates 30 enable transmission of stress from the steel beam 12 to the concrete column 10 and are made of steel.
- the upper and lower band plates 30 are firmly attached to the upper and lower flanges of the steel beam 12 forming the steel beam portion 12A by welding, bolts, nuts, or the like.
- Each band plate 30 has a rectangular outline equal to the cross section of the concrete column 10, and when viewed in plan, each band plate 30 is arranged so that each side matches the four sides of the cross section of the concrete column 10. Located in the middle of one side.
- the location where the four steel beams 12 intersect may be arranged at a location eccentric from the center of the cross section of the concrete column 10.
- Three insertion holes 36A are formed at four corners of each band plate 30 so that the PC steel wires 22 protruding from the upper end portion 10A of the concrete pillar 10 are inserted.
- the surrounding plate 32 improves the shearing force of the column beam joint 14 and at the same time omits the concrete formwork and is made of steel.
- the surrounding plate 32 is attached between the upper and lower band plates 30 and is provided so as to partition the inner space between the upper and lower band plates 30 through the plurality of steel beam 12. More specifically, as shown in FIG. 3, each of the surrounding plates 32 constituting the four side surfaces of the beam-column joint portion 14 is composed of two divided bodies 32B sandwiching an H-shaped notch 32A.
- the steel beam 12 is inserted through 32A, and the peripheral portion of the cutout 32A and each divided body 32B are attached by welding at the inserted portion, and the adjacent surrounding plates 32 are also attached by welding. .
- the concrete 34 is placed in the inner space.
- the concrete 34 is provided with a plurality of insertion holes 36 ⁇ / b> B corresponding to the insertion holes 36 ⁇ / b> A of the upper and lower band plates 30 between the steel beams 12 orthogonal to each other at the four corners of the upper and lower band plates 30.
- the column beam joint 14 having such a structure is placed so that the lower band plate 30 matches the upper end portion 10A of the concrete column 10 with the rectangular outline thereof, and protrudes from the upper end portion 10A of the concrete column 10.
- a plurality of PC steel wires 22 are inserted into the insertion hole 36A of the lower band plate 30, the insertion hole 36B of the concrete 34, and the insertion hole 36A of the upper band plate 30 and protrude upward from the upper band plate 30.
- the PC steel wire 22 is, for example, a threaded reinforcing bar
- a tensile force is applied to each PC steel wire 22 by screwing and rotating a nut N on the upper band plate 30, thereby the concrete pillar 10.
- the beam-column joint 14 and the upper end portion 10 ⁇ / b> A of the concrete column 10 are coupled.
- prestress can be easily and surely introduced from the respective beam-column joints 14 to the concrete columns 10 immediately therebelow, so that the axial strength and bending strength of the concrete columns 10 can be easily ensured. Can be improved. Accordingly, the cross-sectional area of the concrete pillar 10 can be reduced, which is advantageous in reducing the weight of the building and improving the earthquake resistance performance of the building. Further, the PC steel wire 22 at the upper end portion 10A of the concrete column 10 is inserted into the column beam joint 14 and the column beam junction 14 is built in and integrated, so that a concrete formwork or the like is not required and the frame work is performed. Simplification can be achieved, which is advantageous for shortening the construction period and reducing costs.
- the beam-column joint portion 14 includes the upper and lower band plates 30 and the surrounding plate 32 made of steel on the outer surface, the shear force of the beam-column joint portion 14 is improved, and the column-beam joint portion 14 has high earthquake resistance. It is advantageous in making it show.
- reinforcing bars 40 are arranged so as to surround the PC steel wires 22 located at the four corners of the column beam joint 14 in cooperation with the steel beam portions 12A.
- the reinforcing bar 40 is drawn only in the space in front of the space divided into four by the steel beam portion 12A, and the reinforcing bars 40 of other spaces are omitted.
- the reinforcing bar 40 has four steel beam portions 12A. The bars are arranged in all of the spaces that are partitioned. FIG.
- FIG. 4A shows a lateral reinforcing bar type in which a plurality of reinforcing bars 40A bent in an L shape are provided at intervals in the vertical direction, and both ends of the reinforcing bars 40A are coupled to the steel beam portion 12A.
- FIG. 4B shows a reinforcing bar type in which a plurality of reinforcing bars 40B bent in a U-shape are provided at intervals in the vertical direction, and both ends of the reinforcing bars 40B are coupled to the steel beam portion 12A.
- the steel beam portion 12A and the concrete 34 are more firmly coupled to each other through the reinforcing bars 40 in the column beam joint portion 14, which is advantageous in transmitting stress from the steel beam 12 to the concrete column 10. This is advantageous in improving the shearing force of the beam-column joint 14.
- the column beam joint 14 may be a precast member in which concrete 34 is cast and cured in the inner space before being placed on the upper end portion 10A of the concrete column 10, or concrete is cast.
- the non-column beam joint portion 14 is placed on the upper end portion 10A of the concrete column 10, and a plurality of PC steel materials are inserted into the insertion holes 36 and protruded upward from the upper band plate 30. It may be the one in which concrete 34 is cast from the upper side of the inner space below (on-site concrete).
- the outline of the beam-column joint portion 14 in plan view may be larger or smaller than the cross-sectional shape of the concrete column. In short, a plurality of PC steel members protruding from the upper end portion of the concrete column are joined to the beam.
- the steel beam portion 12A is not limited to the crossing of the steel beam 12 in a cross shape.
- the steel beam portion 12A has a T shape as shown in FIG. 5 (A) or an L shape as shown in FIG. 5 (B).
- the cross section of the concrete column 10 and the outline of the beam-column joint 14 in plan view are not limited to a rectangle, but may be a circle or a polygon as shown in FIG.
Abstract
The purpose of the present invention is to make the cross section of a post smaller and improve the seismic performance of a building.
PC steel wires (22) project upward from the four corners of an upper edge (10A) of a concrete post (10). A beam-to-post joint (14) has a steel beam section (12A), top and bottom band plates (30) attached to the top and bottom of the steel beam section (12A), an enclosing plate (32) that delimits the interior space and that is attached in between and around the top and bottom band plates (30), concrete (34) that is poured into the interior space, and a plurality of insertion holes (36A, 36B). For the beam-to-post joint (14), the bottom band plate (30) is mounted to the upper edge (10A) of the concrete post (10), and the PC steel wires (22) pass through the insertion holes (36A, 36B) and project upward from the top band plate (30). A tensile force is applied to the PC steel wires (22) on the top band plate (30), and the concrete post (10) and the beam-to-post joint (14) are pre-stressed.
Description
本発明は、プレストレスコンクリート柱と鉄骨梁とが結合されたハイブリッド構造と、その構築方法に関する。
The present invention relates to a hybrid structure in which a prestressed concrete column and a steel beam are combined, and a construction method thereof.
従来、ハイブリッド構造の建物では、柱をコンクリート造、梁を鉄骨造としている(特許文献1)。
Conventionally, in a building with a hybrid structure, the pillar is made of concrete and the beam is made of steel (Patent Document 1).
そのため、柱を鉄筋コンクリート造とした従来のハイブリッド構造では、建物の重量および地震時の荷重を負担するため、柱の断面積を大きくせざるを得ない。
その結果、建物の重量が増加し、建物の耐震性能を高める上で不利があった。
本発明は前記事情に鑑み案出されたものであって、本発明の目的は、プレストレスコンクリート柱と鉄骨梁とが結合されたハイブリッド構造の建物において、柱の断面を小さくでき、建物の耐震性能を高める上で有利なハイブリッド構造とその構築方法を提供することにある。 Therefore, in the conventional hybrid structure in which the column is reinforced concrete, the weight of the building and the load at the time of an earthquake are borne, so the cross-sectional area of the column must be increased.
As a result, the weight of the building is increased, which is disadvantageous in improving the earthquake resistance performance of the building.
The present invention has been devised in view of the above circumstances, and an object of the present invention is to reduce the cross section of a column in a hybrid structure building in which a prestressed concrete column and a steel beam are combined, and An object of the present invention is to provide a hybrid structure and its construction method that are advantageous in enhancing performance.
その結果、建物の重量が増加し、建物の耐震性能を高める上で不利があった。
本発明は前記事情に鑑み案出されたものであって、本発明の目的は、プレストレスコンクリート柱と鉄骨梁とが結合されたハイブリッド構造の建物において、柱の断面を小さくでき、建物の耐震性能を高める上で有利なハイブリッド構造とその構築方法を提供することにある。 Therefore, in the conventional hybrid structure in which the column is reinforced concrete, the weight of the building and the load at the time of an earthquake are borne, so the cross-sectional area of the column must be increased.
As a result, the weight of the building is increased, which is disadvantageous in improving the earthquake resistance performance of the building.
The present invention has been devised in view of the above circumstances, and an object of the present invention is to reduce the cross section of a column in a hybrid structure building in which a prestressed concrete column and a steel beam are combined, and An object of the present invention is to provide a hybrid structure and its construction method that are advantageous in enhancing performance.
前記目的を達成するため本発明は、コンクリート柱と複数の鉄骨梁とが結合されたハイブリッド構造であって、前記コンクリート柱の上端部の外周部の周方向に間隔をおいた複数箇所において前記コンクリート柱の下部から上方に延在する複数のPC鋼材がそれぞれ上方に突出しており、前記複数の鉄骨梁が前記コンクリート柱の上端部に結合される箇所は柱梁接合部とされ、前記柱梁接合部は、複数の前記鉄骨梁が結合された鉄骨梁部分と、前記鉄骨梁部分の上下に取着された上下のバンドプレートと、前記上下のバンドプレートの周囲間に取着され前記複数の鉄骨梁を貫通させ前記上下のバンドプレートの間に内側空間を仕切る囲み板と、前記内側空間に打設されるコンクリートと、前記複数のPC鋼材を下側の前記バンドプレートから前記コンクリート、上側の前記バンドプレートに挿通させる複数の挿通孔とを有し、前記柱梁接合部は、下側の前記バンドプレートが前記コンクリート柱の上端部に載置されており、前記コンクリート柱の上端部から突出する前記複数のPC鋼材が前記挿通孔に挿通されて上側の前記バンドプレートから上方に突出しており、前記複数のPC鋼材に引っ張り力を掛けることで前記コンクリート柱と前記柱梁接合部にプレストレスが掛けられていることを特徴とする。
また、本発明は、コンクリート柱と複数の鉄骨梁とが結合されたハイブリッド構造の構築方法であって、前記コンクリート柱の上端部の外周部の周方向に間隔をおいた複数箇所から前記コンクリート柱の下部から上方に延在する複数のPC鋼材をそれぞれ上方に突出させ、前記複数の鉄骨梁が前記コンクリート柱の上端部に結合される柱梁接合部を、前記複数の鉄骨梁が結合された鉄骨梁部分と、前記鉄骨梁部分の上下に取着された上下のバンドプレートと、前記上下のバンドプレートの周囲間に取着され前記複数の鉄骨梁を貫通させて前記上下のバンドプレートの間に内側空間を仕切る囲み板と、前記内側空間に打設されるコンクリートと、前記複数のPC鋼材を下側の前記バンドプレートから前記コンクリート、上側の前記バンドプレートに挿通させる複数の挿通孔とで構成し、前記柱梁接合部の前記下側のバンドプレートを前記コンクリート柱の上端部に載置し、前記コンクリート柱の上端部から突出する前記複数のPC鋼材を前記挿通孔に挿通して上側の前記バンドプレートから上方に突出させ、前記上側のバンドプレート上において前記複数のPC鋼材に引っ張り力を掛けることで前記コンクリート柱と前記柱梁接合部にプレストレスを掛けるようにしたことを特徴とする。 In order to achieve the above object, the present invention provides a hybrid structure in which a concrete column and a plurality of steel beams are combined, and the concrete is provided at a plurality of locations spaced in the circumferential direction of the outer peripheral portion of the upper end portion of the concrete column. A plurality of PC steel members extending upward from the lower part of the column protrude upward, and a portion where the plurality of steel beams are coupled to an upper end portion of the concrete column is a column beam joint, and the column beam joint The portion includes a steel beam portion to which a plurality of the steel beam beams are coupled, upper and lower band plates attached to the upper and lower sides of the steel beam portion, and a plurality of the steel frames attached between the upper and lower band plates. A surrounding plate that penetrates a beam and partitions an inner space between the upper and lower band plates, concrete that is placed in the inner space, and the plurality of PC steel materials from the lower band plate The concrete column has a plurality of insertion holes through which the upper band plate is inserted, and the column beam joint has the lower band plate placed on the upper end of the concrete column. The plurality of PC steel members protruding from the upper end of the steel plate are inserted through the insertion holes and protrude upward from the upper band plate, and the concrete columns and the column beams are applied by applying a tensile force to the plurality of PC steel materials. A prestress is applied to the joint.
The present invention is also a method for constructing a hybrid structure in which a concrete column and a plurality of steel beams are combined, and the concrete column is formed from a plurality of locations spaced in the circumferential direction of the outer peripheral portion of the upper end portion of the concrete column. A plurality of PC steel members extending upward from the lower part of each of the steel beams are protruded upward, and the plurality of steel beams are coupled to a column beam joint where the plurality of steel beams are coupled to an upper end portion of the concrete column. A steel beam part, upper and lower band plates attached to the upper and lower parts of the steel beam part, and a space between the upper and lower band plates attached between the upper and lower band plates and passing through the plurality of steel beam A partition plate for partitioning the inner space, concrete cast in the inner space, the plurality of PC steel materials from the lower band plate to the concrete, and the upper band plate And a plurality of insertion holes that are inserted into the plurality of PC steel members. The plurality of PC steel members projecting from the upper end portion of the concrete column, wherein the lower band plate of the column beam joint is placed on the upper end portion of the concrete column. Is inserted into the insertion hole and protrudes upward from the upper band plate, and a tensile stress is applied to the plurality of PC steel materials on the upper band plate to prestress the concrete column and the beam-column joint. It is characterized by being multiplied.
また、本発明は、コンクリート柱と複数の鉄骨梁とが結合されたハイブリッド構造の構築方法であって、前記コンクリート柱の上端部の外周部の周方向に間隔をおいた複数箇所から前記コンクリート柱の下部から上方に延在する複数のPC鋼材をそれぞれ上方に突出させ、前記複数の鉄骨梁が前記コンクリート柱の上端部に結合される柱梁接合部を、前記複数の鉄骨梁が結合された鉄骨梁部分と、前記鉄骨梁部分の上下に取着された上下のバンドプレートと、前記上下のバンドプレートの周囲間に取着され前記複数の鉄骨梁を貫通させて前記上下のバンドプレートの間に内側空間を仕切る囲み板と、前記内側空間に打設されるコンクリートと、前記複数のPC鋼材を下側の前記バンドプレートから前記コンクリート、上側の前記バンドプレートに挿通させる複数の挿通孔とで構成し、前記柱梁接合部の前記下側のバンドプレートを前記コンクリート柱の上端部に載置し、前記コンクリート柱の上端部から突出する前記複数のPC鋼材を前記挿通孔に挿通して上側の前記バンドプレートから上方に突出させ、前記上側のバンドプレート上において前記複数のPC鋼材に引っ張り力を掛けることで前記コンクリート柱と前記柱梁接合部にプレストレスを掛けるようにしたことを特徴とする。 In order to achieve the above object, the present invention provides a hybrid structure in which a concrete column and a plurality of steel beams are combined, and the concrete is provided at a plurality of locations spaced in the circumferential direction of the outer peripheral portion of the upper end portion of the concrete column. A plurality of PC steel members extending upward from the lower part of the column protrude upward, and a portion where the plurality of steel beams are coupled to an upper end portion of the concrete column is a column beam joint, and the column beam joint The portion includes a steel beam portion to which a plurality of the steel beam beams are coupled, upper and lower band plates attached to the upper and lower sides of the steel beam portion, and a plurality of the steel frames attached between the upper and lower band plates. A surrounding plate that penetrates a beam and partitions an inner space between the upper and lower band plates, concrete that is placed in the inner space, and the plurality of PC steel materials from the lower band plate The concrete column has a plurality of insertion holes through which the upper band plate is inserted, and the column beam joint has the lower band plate placed on the upper end of the concrete column. The plurality of PC steel members protruding from the upper end of the steel plate are inserted through the insertion holes and protrude upward from the upper band plate, and the concrete columns and the column beams are applied by applying a tensile force to the plurality of PC steel materials. A prestress is applied to the joint.
The present invention is also a method for constructing a hybrid structure in which a concrete column and a plurality of steel beams are combined, and the concrete column is formed from a plurality of locations spaced in the circumferential direction of the outer peripheral portion of the upper end portion of the concrete column. A plurality of PC steel members extending upward from the lower part of each of the steel beams are protruded upward, and the plurality of steel beams are coupled to a column beam joint where the plurality of steel beams are coupled to an upper end portion of the concrete column. A steel beam part, upper and lower band plates attached to the upper and lower parts of the steel beam part, and a space between the upper and lower band plates attached between the upper and lower band plates and passing through the plurality of steel beam A partition plate for partitioning the inner space, concrete cast in the inner space, the plurality of PC steel materials from the lower band plate to the concrete, and the upper band plate And a plurality of insertion holes that are inserted into the plurality of PC steel members. The plurality of PC steel members projecting from the upper end portion of the concrete column, wherein the lower band plate of the column beam joint is placed on the upper end portion of the concrete column. Is inserted into the insertion hole and protrudes upward from the upper band plate, and a tensile stress is applied to the plurality of PC steel materials on the upper band plate to prestress the concrete column and the beam-column joint. It is characterized by being multiplied.
本発明によれば、各柱梁接合部からその直下のコンクリート柱にプレストレスを簡単に確実に導入できるので、プレストレスコンクリート柱の軸耐力および曲げ耐力を簡単に確実に向上できる。
したがって、柱の断面積を小さくでき、建物の重量を低減し、建物のコストダウンを図る上で有利となる。
また、PC鋼材を柱梁接合部に挿通させ、柱―柱梁接合部一体型建込みとするので、コンクリート型枠などの量が減って躯体工事の簡略化が図れ、躯体工事の工期の短縮化、コストダウンを図る上で有利となる。
また、柱梁接合部はその外面に、上下のバンドプレートおよび囲み板を備えるので、柱梁接合部のせん断力が向上し、柱梁接合部に高い耐震性能を発揮させる上で有利となる。 According to the present invention, since prestress can be easily and reliably introduced from each column-beam joint to the concrete column directly therebelow, it is possible to easily and reliably improve the axial strength and bending strength of the prestressed concrete column.
Therefore, the cross-sectional area of the column can be reduced, which is advantageous in reducing the weight of the building and reducing the cost of the building.
In addition, because the PC steel material is inserted into the beam-column joint and built into the column-column-beam joint, the amount of concrete formwork is reduced, simplifying the frame work and shortening the work period of the frame work. This is advantageous in reducing cost and cost.
In addition, since the column beam joint is provided with upper and lower band plates and a surrounding plate on its outer surface, the shear force of the column beam joint is improved, which is advantageous for exhibiting high earthquake resistance performance in the column beam joint.
したがって、柱の断面積を小さくでき、建物の重量を低減し、建物のコストダウンを図る上で有利となる。
また、PC鋼材を柱梁接合部に挿通させ、柱―柱梁接合部一体型建込みとするので、コンクリート型枠などの量が減って躯体工事の簡略化が図れ、躯体工事の工期の短縮化、コストダウンを図る上で有利となる。
また、柱梁接合部はその外面に、上下のバンドプレートおよび囲み板を備えるので、柱梁接合部のせん断力が向上し、柱梁接合部に高い耐震性能を発揮させる上で有利となる。 According to the present invention, since prestress can be easily and reliably introduced from each column-beam joint to the concrete column directly therebelow, it is possible to easily and reliably improve the axial strength and bending strength of the prestressed concrete column.
Therefore, the cross-sectional area of the column can be reduced, which is advantageous in reducing the weight of the building and reducing the cost of the building.
In addition, because the PC steel material is inserted into the beam-column joint and built into the column-column-beam joint, the amount of concrete formwork is reduced, simplifying the frame work and shortening the work period of the frame work. This is advantageous in reducing cost and cost.
In addition, since the column beam joint is provided with upper and lower band plates and a surrounding plate on its outer surface, the shear force of the column beam joint is improved, which is advantageous for exhibiting high earthquake resistance performance in the column beam joint.
以下、本発明のハイブリッド構造をその構築方法と共に添付図面に従って説明する。
図1~図3に示すように、コンクリート柱10と、鉄骨梁12の柱梁接合部14とが結合されてハイブリッド構造16が構成されている。 Hereinafter, the hybrid structure of the present invention will be described together with its construction method according to the attached drawings.
As shown in FIGS. 1 to 3, theconcrete column 10 and the column beam joint 14 of the steel beam 12 are combined to form a hybrid structure 16.
図1~図3に示すように、コンクリート柱10と、鉄骨梁12の柱梁接合部14とが結合されてハイブリッド構造16が構成されている。 Hereinafter, the hybrid structure of the present invention will be described together with its construction method according to the attached drawings.
As shown in FIGS. 1 to 3, the
コンクリート柱10は、例えば、フロア18上に立設されている。
コンクリート柱10の上端部10Aの外周部の周方向に間隔をおいた複数箇所から、コンクリート柱10の下部から上方に延在するPC鋼材であるPC鋼線22の複数本がそれぞれ上方に突出している。
本実施の形態では、コンクリート柱10の断面は矩形状を呈しており、PC鋼線22が3本ずつコンクリート柱10の上端部10Aの4隅からそれぞれ上方に突出している。なお、このPC鋼線22の本数は建物に合わせ適宜決定される。
各PC鋼線22の下端は、例えば、機械式継手24を介して基礎に連結され、あるいは、下層階のコンクリート柱10のPC鋼線22に連結されている。
なお、PC鋼線22の下端を除いた箇所は、後述するように後でコンクリート柱10と柱梁接合部14とにプレストレスとを掛けられるように、スリーブ内に通すなどしてコンクリート柱10のコンクリートに完全に密着させないように図られている。 Theconcrete pillar 10 is erected on the floor 18, for example.
A plurality ofPC steel wires 22, which are PC steel materials extending upward from the lower part of the concrete column 10, protrude upward from a plurality of locations spaced in the circumferential direction of the outer peripheral portion of the upper end portion 10 </ b> A of the concrete column 10. Yes.
In the present embodiment, theconcrete pillar 10 has a rectangular cross section, and three PC steel wires 22 protrude upward from the four corners of the upper end portion 10A of the concrete pillar 10, respectively. The number of PC steel wires 22 is appropriately determined according to the building.
The lower end of eachPC steel wire 22 is connected to the foundation via, for example, a mechanical joint 24 or connected to the PC steel wire 22 of the concrete pillar 10 on the lower floor.
The portions other than the lower end of thePC steel wire 22 are passed through a sleeve so that the prestress can be applied to the concrete column 10 and the column beam joint 14 later, as will be described later. It is designed not to be completely in close contact with concrete.
コンクリート柱10の上端部10Aの外周部の周方向に間隔をおいた複数箇所から、コンクリート柱10の下部から上方に延在するPC鋼材であるPC鋼線22の複数本がそれぞれ上方に突出している。
本実施の形態では、コンクリート柱10の断面は矩形状を呈しており、PC鋼線22が3本ずつコンクリート柱10の上端部10Aの4隅からそれぞれ上方に突出している。なお、このPC鋼線22の本数は建物に合わせ適宜決定される。
各PC鋼線22の下端は、例えば、機械式継手24を介して基礎に連結され、あるいは、下層階のコンクリート柱10のPC鋼線22に連結されている。
なお、PC鋼線22の下端を除いた箇所は、後述するように後でコンクリート柱10と柱梁接合部14とにプレストレスとを掛けられるように、スリーブ内に通すなどしてコンクリート柱10のコンクリートに完全に密着させないように図られている。 The
A plurality of
In the present embodiment, the
The lower end of each
The portions other than the lower end of the
柱梁接合部14は、鉄骨梁12がコンクリート柱10の上端部10Aに結合される箇所である。
柱梁接合部14は、鉄骨梁部分12A、上下のバンドプレート30、囲み板32、コンクリート34、挿通孔36A、36Bとを含んで構成されている。
本実施の形態では、コンクリート柱10の断面形状と、平面視した柱梁接合部14の輪郭は等しく、共に矩形を呈しており、それらの形状を同一としコンクリート柱10と柱梁接合部14とを上下方向に連続状にすることで、上階のフロアの配筋や型枠などを含んだその他の各種部材をレイアウトする上で有利となっている。 Thecolumn beam joint 14 is a portion where the steel beam 12 is coupled to the upper end portion 10 </ b> A of the concrete column 10.
Thecolumn beam joint 14 includes a steel beam portion 12A, upper and lower band plates 30, a surrounding plate 32, concrete 34, and insertion holes 36A and 36B.
In the present embodiment, the cross-sectional shape of theconcrete column 10 and the outline of the beam-column joint 14 in plan view are equal and both are rectangular, and the shape is the same, and the concrete column 10 and the beam-column joint 14 It is advantageous for laying out various other members including the reinforcement of the upper floor, the formwork, etc., by making the shape continuous in the vertical direction.
柱梁接合部14は、鉄骨梁部分12A、上下のバンドプレート30、囲み板32、コンクリート34、挿通孔36A、36Bとを含んで構成されている。
本実施の形態では、コンクリート柱10の断面形状と、平面視した柱梁接合部14の輪郭は等しく、共に矩形を呈しており、それらの形状を同一としコンクリート柱10と柱梁接合部14とを上下方向に連続状にすることで、上階のフロアの配筋や型枠などを含んだその他の各種部材をレイアウトする上で有利となっている。 The
The
In the present embodiment, the cross-sectional shape of the
鉄骨梁12は、例えば、鉛直方向に延在するウェブと、ウェブの上下に位置し水平方向に延在する上下のフランジとからなるH型鋼である。
鉄骨梁12は、柱梁接合部14では複数の鉄骨梁12が平面視十字状に連結された鉄骨梁部分12Aとなっている。 Thesteel beam 12 is, for example, an H-shaped steel including a web extending in the vertical direction and upper and lower flanges positioned above and below the web and extending in the horizontal direction.
Thesteel beam 12 is a steel beam portion 12A in which a plurality of steel beams 12 are connected in a cross shape in plan view at the column beam joint 14.
鉄骨梁12は、柱梁接合部14では複数の鉄骨梁12が平面視十字状に連結された鉄骨梁部分12Aとなっている。 The
The
上下のバンドプレート30は、鉄骨梁12からコンクリート柱10への応力の伝達を可能とするもので、鋼製である。
上下のバンドプレート30は、鉄骨梁部分12Aをなす鉄骨梁12の上下のフランジにそれぞれ溶接やボルト、ナット等により強固に取着されている。
各バンドプレート30は、コンクリート柱10の断面と等しい矩形の輪郭を呈し、平面視した場合、各辺をコンクリート柱10の断面の4辺に合致させて配置され、鉄骨梁12はそれぞれ矩形の4つの辺の中央部に位置している。なお、4つの鉄骨梁12が交差する箇所は、コンクリート柱10の断面の中央から偏心した箇所に配置される場合もある。
各バンドプレート30の4隅に、コンクリート柱10の上端部10Aから突出するPC鋼線22を挿通させるように、挿通孔36Aがそれぞれ3つずつ形成されている。 The upper andlower band plates 30 enable transmission of stress from the steel beam 12 to the concrete column 10 and are made of steel.
The upper andlower band plates 30 are firmly attached to the upper and lower flanges of the steel beam 12 forming the steel beam portion 12A by welding, bolts, nuts, or the like.
Eachband plate 30 has a rectangular outline equal to the cross section of the concrete column 10, and when viewed in plan, each band plate 30 is arranged so that each side matches the four sides of the cross section of the concrete column 10. Located in the middle of one side. In addition, the location where the four steel beams 12 intersect may be arranged at a location eccentric from the center of the cross section of the concrete column 10.
Threeinsertion holes 36A are formed at four corners of each band plate 30 so that the PC steel wires 22 protruding from the upper end portion 10A of the concrete pillar 10 are inserted.
上下のバンドプレート30は、鉄骨梁部分12Aをなす鉄骨梁12の上下のフランジにそれぞれ溶接やボルト、ナット等により強固に取着されている。
各バンドプレート30は、コンクリート柱10の断面と等しい矩形の輪郭を呈し、平面視した場合、各辺をコンクリート柱10の断面の4辺に合致させて配置され、鉄骨梁12はそれぞれ矩形の4つの辺の中央部に位置している。なお、4つの鉄骨梁12が交差する箇所は、コンクリート柱10の断面の中央から偏心した箇所に配置される場合もある。
各バンドプレート30の4隅に、コンクリート柱10の上端部10Aから突出するPC鋼線22を挿通させるように、挿通孔36Aがそれぞれ3つずつ形成されている。 The upper and
The upper and
Each
Three
囲み板32は柱梁接合部14のせん断力の向上を図り、同時に、コンクリート型枠を省略するもので、鋼製である。
囲み板32は、上下のバンドプレート30の周囲間に取着され、複数の鉄骨梁12を貫通させて上下のバンドプレート30の間に内側空間を仕切るように設けられている。
より詳細には、図3に示すように、柱梁接合部14の4つの側面を構成する各囲み板32は、H型の切り欠き32Aを挟んだ2つの分割体32Bからなり、それら切り欠き32Aに鉄骨梁12が挿通され、挿通された箇所では切り欠き32Aの周辺部と各分割体32Bとが溶接により取着され、また、隣り合う各囲み板32どうしも溶接により取着されている。 The surroundingplate 32 improves the shearing force of the column beam joint 14 and at the same time omits the concrete formwork and is made of steel.
The surroundingplate 32 is attached between the upper and lower band plates 30 and is provided so as to partition the inner space between the upper and lower band plates 30 through the plurality of steel beam 12.
More specifically, as shown in FIG. 3, each of the surroundingplates 32 constituting the four side surfaces of the beam-column joint portion 14 is composed of two divided bodies 32B sandwiching an H-shaped notch 32A. The steel beam 12 is inserted through 32A, and the peripheral portion of the cutout 32A and each divided body 32B are attached by welding at the inserted portion, and the adjacent surrounding plates 32 are also attached by welding. .
囲み板32は、上下のバンドプレート30の周囲間に取着され、複数の鉄骨梁12を貫通させて上下のバンドプレート30の間に内側空間を仕切るように設けられている。
より詳細には、図3に示すように、柱梁接合部14の4つの側面を構成する各囲み板32は、H型の切り欠き32Aを挟んだ2つの分割体32Bからなり、それら切り欠き32Aに鉄骨梁12が挿通され、挿通された箇所では切り欠き32Aの周辺部と各分割体32Bとが溶接により取着され、また、隣り合う各囲み板32どうしも溶接により取着されている。 The surrounding
The surrounding
More specifically, as shown in FIG. 3, each of the surrounding
コンクリート34は内側空間に打設されている。
そしてコンクリート34には、上下のバンドプレート30の挿通孔36Aに対応する複数の挿通孔36Bが、上下のバンドプレート30の4隅で互いに直交する鉄骨梁12の間にそれぞれ設けられている。 Theconcrete 34 is placed in the inner space.
Theconcrete 34 is provided with a plurality of insertion holes 36 </ b> B corresponding to the insertion holes 36 </ b> A of the upper and lower band plates 30 between the steel beams 12 orthogonal to each other at the four corners of the upper and lower band plates 30.
そしてコンクリート34には、上下のバンドプレート30の挿通孔36Aに対応する複数の挿通孔36Bが、上下のバンドプレート30の4隅で互いに直交する鉄骨梁12の間にそれぞれ設けられている。 The
The
このような構成からなる柱梁接合部14は、下側のバンドプレート30がコンクリート柱10の上端部10Aにそれら矩形の輪郭が合致するように載置され、コンクリート柱10の上端部10Aから突出する複数のPC鋼線22が下側のバンドプレート30の挿通孔36A、コンクリート34の挿通孔36B、上側の前記バンドプレート30の挿通孔36Aに挿通されて上側のバンドプレート30から上方に突出される。
そして、PC鋼線22が例えばねじ節鉄筋である場合には、上側のバンドプレート30上においてナットNを螺合させ回転させることにより各PC鋼線22に引っ張り力を掛け、これによりコンクリート柱10と柱梁接合部14にプレストレスが掛けられた状態で、柱梁接合部14とコンクリート柱10の上端部10Aとが結合されている。 Thecolumn beam joint 14 having such a structure is placed so that the lower band plate 30 matches the upper end portion 10A of the concrete column 10 with the rectangular outline thereof, and protrudes from the upper end portion 10A of the concrete column 10. A plurality of PC steel wires 22 are inserted into the insertion hole 36A of the lower band plate 30, the insertion hole 36B of the concrete 34, and the insertion hole 36A of the upper band plate 30 and protrude upward from the upper band plate 30. The
When thePC steel wire 22 is, for example, a threaded reinforcing bar, a tensile force is applied to each PC steel wire 22 by screwing and rotating a nut N on the upper band plate 30, thereby the concrete pillar 10. In a state where prestress is applied to the beam-column joint 14, the beam-column joint 14 and the upper end portion 10 </ b> A of the concrete column 10 are coupled.
そして、PC鋼線22が例えばねじ節鉄筋である場合には、上側のバンドプレート30上においてナットNを螺合させ回転させることにより各PC鋼線22に引っ張り力を掛け、これによりコンクリート柱10と柱梁接合部14にプレストレスが掛けられた状態で、柱梁接合部14とコンクリート柱10の上端部10Aとが結合されている。 The
When the
本実施の形態のハイブリッド構造16によれば、各柱梁接合部14からその直下のコンクリート柱10にプレストレスを簡単に確実に導入できるので、コンクリート柱10の軸耐力および曲げ耐力を簡単に確実に向上できる。
したがって、コンクリート柱10の断面積を小さくでき、建物の重量を低減し、建物の耐震性能を高める上で有利となる。
また、コンクリート柱10の上端部10AのPC鋼線22を柱梁接合部14に挿通させ、柱梁接合部14を建て込み一体型とするので、コンクリート型枠などが不要となって躯体工事の簡略化が図れ、躯体工事の工期の短縮化、コストダウンを図る上で有利となる。
また、柱梁接合部14はその外面に、鋼製の上下のバンドプレート30および囲み板32を備えるので、柱梁接合部14のせん断力が向上し、柱梁接合部14に高い耐震性能を発揮させる上で有利となる。 According to thehybrid structure 16 of the present embodiment, prestress can be easily and surely introduced from the respective beam-column joints 14 to the concrete columns 10 immediately therebelow, so that the axial strength and bending strength of the concrete columns 10 can be easily ensured. Can be improved.
Accordingly, the cross-sectional area of theconcrete pillar 10 can be reduced, which is advantageous in reducing the weight of the building and improving the earthquake resistance performance of the building.
Further, thePC steel wire 22 at the upper end portion 10A of the concrete column 10 is inserted into the column beam joint 14 and the column beam junction 14 is built in and integrated, so that a concrete formwork or the like is not required and the frame work is performed. Simplification can be achieved, which is advantageous for shortening the construction period and reducing costs.
In addition, since the beam-columnjoint portion 14 includes the upper and lower band plates 30 and the surrounding plate 32 made of steel on the outer surface, the shear force of the beam-column joint portion 14 is improved, and the column-beam joint portion 14 has high earthquake resistance. It is advantageous in making it show.
したがって、コンクリート柱10の断面積を小さくでき、建物の重量を低減し、建物の耐震性能を高める上で有利となる。
また、コンクリート柱10の上端部10AのPC鋼線22を柱梁接合部14に挿通させ、柱梁接合部14を建て込み一体型とするので、コンクリート型枠などが不要となって躯体工事の簡略化が図れ、躯体工事の工期の短縮化、コストダウンを図る上で有利となる。
また、柱梁接合部14はその外面に、鋼製の上下のバンドプレート30および囲み板32を備えるので、柱梁接合部14のせん断力が向上し、柱梁接合部14に高い耐震性能を発揮させる上で有利となる。 According to the
Accordingly, the cross-sectional area of the
Further, the
In addition, since the beam-column
次に、図4(A)、(B)を参照して柱梁接合部14の変形例について説明する。
この変形例では、柱梁接合部14の4隅に位置するPC鋼線22を、それぞれ鉄骨梁部分12Aと協働して囲むように鉄筋40を配筋したものである。
なお、図面では、鉄骨梁部分12Aで4つに仕切られた空間の手前の空間にのみ鉄筋40を描き他の空間の鉄筋40を省略しているが、鉄筋40は、鉄骨梁部分12Aで4つに仕切られた空間の全てに配筋される。
図4(A)は、L字状に屈曲された鉄筋40Aを上下方向に間隔をおいて複数設け、それら鉄筋40Aの両端を鉄骨梁部分12Aに結合させた横補強筋タイプのものである。
図4(B)は、U字状に屈曲された鉄筋40Bを上下方向に間隔をおいて複数設け、それら鉄筋40Bの両端を鉄骨梁部分12Aに結合させた差し筋タイプのものである。
このような変形例によれば、柱梁接合部14において鉄骨梁部分12Aとコンクリート34とが鉄筋40を介してより強固に結合され、鉄骨梁12からコンクリート柱10へ応力を伝達する上で有利となり、柱梁接合部14のせん断力を向上する上で有利となる。 Next, a modified example of the column beam joint 14 will be described with reference to FIGS.
In this modification, reinforcingbars 40 are arranged so as to surround the PC steel wires 22 located at the four corners of the column beam joint 14 in cooperation with the steel beam portions 12A.
In the drawing, the reinforcingbar 40 is drawn only in the space in front of the space divided into four by the steel beam portion 12A, and the reinforcing bars 40 of other spaces are omitted. However, the reinforcing bar 40 has four steel beam portions 12A. The bars are arranged in all of the spaces that are partitioned.
FIG. 4A shows a lateral reinforcing bar type in which a plurality of reinforcingbars 40A bent in an L shape are provided at intervals in the vertical direction, and both ends of the reinforcing bars 40A are coupled to the steel beam portion 12A.
FIG. 4B shows a reinforcing bar type in which a plurality of reinforcingbars 40B bent in a U-shape are provided at intervals in the vertical direction, and both ends of the reinforcing bars 40B are coupled to the steel beam portion 12A.
According to such a modified example, thesteel beam portion 12A and the concrete 34 are more firmly coupled to each other through the reinforcing bars 40 in the column beam joint portion 14, which is advantageous in transmitting stress from the steel beam 12 to the concrete column 10. This is advantageous in improving the shearing force of the beam-column joint 14.
この変形例では、柱梁接合部14の4隅に位置するPC鋼線22を、それぞれ鉄骨梁部分12Aと協働して囲むように鉄筋40を配筋したものである。
なお、図面では、鉄骨梁部分12Aで4つに仕切られた空間の手前の空間にのみ鉄筋40を描き他の空間の鉄筋40を省略しているが、鉄筋40は、鉄骨梁部分12Aで4つに仕切られた空間の全てに配筋される。
図4(A)は、L字状に屈曲された鉄筋40Aを上下方向に間隔をおいて複数設け、それら鉄筋40Aの両端を鉄骨梁部分12Aに結合させた横補強筋タイプのものである。
図4(B)は、U字状に屈曲された鉄筋40Bを上下方向に間隔をおいて複数設け、それら鉄筋40Bの両端を鉄骨梁部分12Aに結合させた差し筋タイプのものである。
このような変形例によれば、柱梁接合部14において鉄骨梁部分12Aとコンクリート34とが鉄筋40を介してより強固に結合され、鉄骨梁12からコンクリート柱10へ応力を伝達する上で有利となり、柱梁接合部14のせん断力を向上する上で有利となる。 Next, a modified example of the column beam joint 14 will be described with reference to FIGS.
In this modification, reinforcing
In the drawing, the reinforcing
FIG. 4A shows a lateral reinforcing bar type in which a plurality of reinforcing
FIG. 4B shows a reinforcing bar type in which a plurality of reinforcing
According to such a modified example, the
なお、柱梁接合部14は、コンクリート柱10の上端部10Aに載置される前に内側空間にコンクリート34が打設され養生されたプレキャスト部材であってもよく、あるいは、コンクリートが打設されていない柱梁接合部14をコンクリート柱10の上端部10Aに載置し、複数のPC鋼材を挿通孔36に挿通し上側のバンドプレート30から上方に突出させたのち、上側のバンドプレート30の下方で内側空間の上方からコンクリート34を打設したもの(現場打ちコンクリート)であってもよい。
また、平面視した柱梁接合部14の輪郭はコンクリート柱の断面形状よりも大きくてもよく、あるいは、小さくてもよく、要するに、コンクリート柱の上端部から突出する複数のPC鋼材を柱梁接合部14から上方に突出させることができればよい。
また、鉄骨梁部分12Aは鉄骨梁12が十字状に交差するものに限定されず、例えば、図5(A)に示すようにT字状や、図5(B)に示すようにL字状に交差する場合にも無論適用可能である。
また、コンクリート柱10の断面および平面視した柱梁接合部14の輪郭は矩形に限らず、図5(C)に示すように円形や、多角形などであってもよい。 The column beam joint 14 may be a precast member in whichconcrete 34 is cast and cured in the inner space before being placed on the upper end portion 10A of the concrete column 10, or concrete is cast. The non-column beam joint portion 14 is placed on the upper end portion 10A of the concrete column 10, and a plurality of PC steel materials are inserted into the insertion holes 36 and protruded upward from the upper band plate 30. It may be the one in which concrete 34 is cast from the upper side of the inner space below (on-site concrete).
Moreover, the outline of the beam-columnjoint portion 14 in plan view may be larger or smaller than the cross-sectional shape of the concrete column. In short, a plurality of PC steel members protruding from the upper end portion of the concrete column are joined to the beam. What is necessary is just to make it protrude from the part 14 upwards.
Further, thesteel beam portion 12A is not limited to the crossing of the steel beam 12 in a cross shape. For example, the steel beam portion 12A has a T shape as shown in FIG. 5 (A) or an L shape as shown in FIG. 5 (B). Of course, it is applicable to the case of crossing.
Further, the cross section of theconcrete column 10 and the outline of the beam-column joint 14 in plan view are not limited to a rectangle, but may be a circle or a polygon as shown in FIG.
また、平面視した柱梁接合部14の輪郭はコンクリート柱の断面形状よりも大きくてもよく、あるいは、小さくてもよく、要するに、コンクリート柱の上端部から突出する複数のPC鋼材を柱梁接合部14から上方に突出させることができればよい。
また、鉄骨梁部分12Aは鉄骨梁12が十字状に交差するものに限定されず、例えば、図5(A)に示すようにT字状や、図5(B)に示すようにL字状に交差する場合にも無論適用可能である。
また、コンクリート柱10の断面および平面視した柱梁接合部14の輪郭は矩形に限らず、図5(C)に示すように円形や、多角形などであってもよい。 The column beam joint 14 may be a precast member in which
Moreover, the outline of the beam-column
Further, the
Further, the cross section of the
10……コンクリート柱、10A……コンクリート柱の上端部、12……鉄骨梁、12A……複数の鉄骨梁が結合された鉄骨梁部分、14……柱梁接合部、16……ハイブリッド構造、22……PC鋼線、30……バンドプレート、32……囲み板、34……内側空間に打設されるコンクリート、40……鉄筋。
10 …… Concrete column, 10A …… Upper end portion of concrete column, 12 …… Steel beam, 12A …… Steel beam part where multiple steel beams are combined, 14 …… Column beam joint, 16 …… Hybrid structure, 22 ... PC steel wire, 30 ... band plate, 32 ... enclosure, 34 ... concrete placed in the inner space, 40 ... rebar.
Claims (8)
- コンクリート柱と複数の鉄骨梁とが結合されたハイブリッド構造であって、
前記コンクリート柱の上端部の外周部の周方向に間隔をおいた複数箇所において前記コンクリート柱の下部から上方に延在する複数のPC鋼材がそれぞれ上方に突出しており、
前記複数の鉄骨梁が前記コンクリート柱の上端部に結合される箇所は柱梁接合部とされ、
前記柱梁接合部は、複数の前記鉄骨梁が結合された鉄骨梁部分と、前記鉄骨梁部分の上下に取着された上下のバンドプレートと、前記上下のバンドプレートの周囲間に取着され前記複数の鉄骨梁を貫通させ前記上下のバンドプレートの間に内側空間を仕切る囲み板と、前記内側空間に打設されるコンクリートと、前記複数のPC鋼材を下側の前記バンドプレートから前記コンクリート、上側の前記バンドプレートに挿通させる複数の挿通孔とを有し、
前記柱梁接合部は、下側の前記バンドプレートが前記コンクリート柱の上端部に載置されており、
前記コンクリート柱の上端部から突出する前記複数のPC鋼材が前記挿通孔に挿通されて上側の前記バンドプレートから上方に突出しており、
前記複数のPC鋼材に引っ張り力を掛けることで前記コンクリート柱と前記柱梁接合部にプレストレスが掛けられている、
ことを特徴とするハイブリッド構造。 A hybrid structure in which a concrete column and a plurality of steel beams are combined,
A plurality of PC steel materials extending upward from the lower part of the concrete column at a plurality of locations spaced in the circumferential direction of the outer peripheral portion of the upper end portion of the concrete column respectively protrude upward.
The place where the plurality of steel beams are joined to the upper end of the concrete column is a column beam joint,
The column beam joint is attached between a steel beam portion in which a plurality of the steel beams are coupled, upper and lower band plates attached above and below the steel beam portion, and the periphery of the upper and lower band plates. A surrounding plate that penetrates the plurality of steel beams to partition an inner space between the upper and lower band plates, concrete that is placed in the inner space, and a plurality of PC steel materials from the lower band plate to the concrete A plurality of insertion holes that are inserted into the upper band plate,
In the beam-column joint, the lower band plate is placed on the upper end of the concrete column,
The plurality of PC steel materials protruding from the upper end of the concrete pillar are inserted through the insertion hole and protrude upward from the upper band plate,
Prestress is applied to the concrete column and the beam-column joint by applying a tensile force to the plurality of PC steel materials,
A hybrid structure characterized by that. - コンクリート柱の断面形状と、平面視した前記柱梁接合部の輪郭は共に矩形状を呈し、
前記鉄骨梁部分は、複数の前記鉄骨梁が十字状に連結されて構成され、
前記複数のPC鋼材は前記柱梁接合部の4隅で互いに直交する前記鉄骨梁の間にそれぞれ位置している、
ことを特徴とする請求項1記載のハイブリッド構造。 Both the cross-sectional shape of the concrete column and the outline of the beam-beam joint in plan view are rectangular,
The steel beam part is configured by connecting a plurality of the steel beam in a cross shape,
The plurality of PC steel materials are respectively positioned between the steel beams that are orthogonal to each other at the four corners of the beam-column joint.
The hybrid structure according to claim 1. - 前記柱梁接合部は、さらに前記柱梁接合部の4隅に位置する前記PC鋼材を、それぞれ十字状に連結された前記鉄骨梁部分と協働して囲むように配筋された鉄筋を備えている、
ことを特徴とする請求項2記載のハイブリッド構造。 The beam-column joint further includes reinforcing bars arranged to surround the PC steel materials positioned at the four corners of the beam-column joint in cooperation with the steel beam portions connected in a cross shape. ing,
The hybrid structure according to claim 2. - コンクリート柱の断面形状と、平面視した前記柱梁接合部の輪郭は等しい、
ことを特徴とする請求項1~3に何れか1項記載のハイブリッド構造。 The cross-sectional shape of the concrete column and the outline of the column beam joint in plan view are equal.
The hybrid structure according to any one of claims 1 to 3, wherein: - コンクリート柱と複数の鉄骨梁とが結合されたハイブリッド構造の構築方法であって、
前記コンクリート柱の上端部の外周部の周方向に間隔をおいた複数箇所から前記コンクリート柱の下部から上方に延在する複数のPC鋼材をそれぞれ上方に突出させ、
前記複数の鉄骨梁が前記コンクリート柱の上端部に結合される柱梁接合部を、前記複数の鉄骨梁が結合された鉄骨梁部分と、前記鉄骨梁部分の上下に取着された上下のバンドプレートと、前記上下のバンドプレートの周囲間に取着され前記複数の鉄骨梁を貫通させて前記上下のバンドプレートの間に内側空間を仕切る囲み板と、前記内側空間に打設されるコンクリートと、前記複数のPC鋼材を下側の前記バンドプレートから前記コンクリート、上側の前記バンドプレートに挿通させる複数の挿通孔とで構成し、
前記柱梁接合部の前記下側のバンドプレートを前記コンクリート柱の上端部に載置し、
前記コンクリート柱の上端部から突出する前記複数のPC鋼材を前記挿通孔に挿通して上側の前記バンドプレートから上方に突出させ、
前記上側のバンドプレート上において前記複数のPC鋼材に引っ張り力を掛けることで前記コンクリート柱と前記柱梁接合部にプレストレスを掛けるようにした、
ことを特徴とするハイブリッド構造の構築方法。 A method for constructing a hybrid structure in which a concrete column and a plurality of steel beams are combined,
A plurality of PC steel members extending upward from the lower part of the concrete column from a plurality of locations spaced in the circumferential direction of the outer peripheral portion of the upper end of the concrete column are respectively projected upward.
A column beam joint where the plurality of steel beams are coupled to an upper end portion of the concrete column, a steel beam portion where the plurality of steel beams are coupled, and an upper and lower band attached above and below the steel beam portion A plate, a surrounding plate that is attached between the upper and lower band plates and penetrates the plurality of steel beams to partition an inner space between the upper and lower band plates, and a concrete that is placed in the inner space The plurality of PC steel materials are composed of a plurality of insertion holes through which the concrete and the upper band plate are inserted from the lower band plate.
Place the lower band plate of the beam-column joint on the upper end of the concrete column,
The plurality of PC steel members protruding from the upper end of the concrete pillar are inserted through the insertion hole and protruded upward from the upper band plate,
By applying a tensile force to the plurality of PC steel materials on the upper band plate, prestress is applied to the concrete column and the column beam joint.
The construction method of the hybrid structure characterized by the above-mentioned. - コンクリート柱の断面形状と、平面視した前記柱梁接合部の輪郭は共に矩形状を呈し、
前記柱梁接合部は、前記複数の鉄骨梁が十字状に連結されて構成され、
前記複数のPC鋼材は前記柱梁接合部の4隅で互いに直交する前記鉄骨梁の間にそれぞれ位置している、
ことを特徴とする請求項5記載のハイブリッド構造の構築方法。 Both the cross-sectional shape of the concrete column and the outline of the beam-beam joint in plan view are rectangular,
The column beam joint is configured by connecting the plurality of steel beams in a cross shape,
The plurality of PC steel materials are respectively positioned between the steel beams that are orthogonal to each other at the four corners of the beam-column joint.
The method for constructing a hybrid structure according to claim 5. - 前記柱梁接合部は、前記コンクリート柱の上端部に載置される前に、前記内側空間にコンクリートが打設されたプレキャスト部材である、
ことを特徴とする請求項5または6記載のハイブリッド構造の構築方法。 The column beam joint is a precast member in which concrete is placed in the inner space before being placed on the upper end of the concrete column.
The method for constructing a hybrid structure according to claim 5 or 6. - 前記内側空間へのコンクリートへの打設は、前記柱梁接合部を前記コンクリート柱の上端部に載置し、前記複数のPC鋼材を前記挿通孔に挿通し上側の前記バンドプレートから上方に突出させたのち行なわれる、
ことを特徴とする請求項5または6記載のハイブリッド構造の構築方法。 For placing the concrete in the inner space, the column beam joint is placed on the upper end of the concrete column, and the plurality of PC steel materials are inserted into the insertion holes and protrude upward from the band plate on the upper side. Done after
The method for constructing a hybrid structure according to claim 5 or 6.
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CN113006272A (en) * | 2021-02-01 | 2021-06-22 | 中建科技集团有限公司 | Assembly type prestressed concrete frame system and construction method |
Also Published As
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CN105102734A (en) | 2015-11-25 |
JP2014190040A (en) | 2014-10-06 |
JP6215552B2 (en) | 2017-10-18 |
CN105102734B (en) | 2017-03-15 |
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