JP2002364110A - Floor structure and method of constructing the floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the rigidity of an entire floor by forming a plurality of floor joists integrally with each other by a simple means, and effectively suppress a dynamic deflection by an impact force acting on the floor. SOLUTION: Steel band-like tension structural bodies 8 forming one set with two rows are installed in the direction orthogonal to the axial direction of the floor joists 3, and crossed between a plurality of floor joists disposed parallel with each other to form the structural bodies in braced shape to hold the upper and lower parts of the floor joists 3. Since the structural bodies are disposed by tensing with tension additional fittings 13, the floor joists 13 can be formed integrally with each other through the tension structural bodies 8 so that the entire joists can resist against an impact force acting on the floor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a steel house,
The present invention relates to a floor structure in various buildings such as a wooden house, and particularly relates to a floor structure and a construction method in which measures for suppressing vibration due to an impact force or the like are taken.

[0002]

2. Description of the Related Art A general floor structure generally has a structure shown in FIGS. As shown in FIG. 10, the end joists (on the wall) 1 and the side joists (on the wall) 2 are assembled in a rectangular shape, and a plurality of floor joists 3 arranged in parallel with a predetermined interval between the end joists 1 are formed. A slab 4 constructed of plywood on a floor joist 3
Is mounted and fixed with a fastener (not shown).

[0003] The floor of a house is constantly affected by the impact force of walking or the like, and the traffic vibration of vehicles running on the road. For example, as shown in FIG. 9, when a downward impact force on the floor plate 4 is applied to the floor plate 4, in this floor structure, only one floor joist 3 a directly below the impact force acts on the floor plate 4. The floor joist 3a alone has low rigidity with respect to the impact force (shown in FIG. 10A), and the range of the rigidity resistance and the inertial weight resistance (shown in FIG. 10B) is narrow. The deflection (the initial deflection when an impact is applied) becomes large, and the evaluation of vibration sensation is deteriorated. The above problem becomes more pronounced as the span of the floor joists increases.

In order to solve the above problem, there is a method of increasing the thickness of plywood, which is a floor joist, to widen the range (b) of rigidity resistance and inertial weight resistance. There is a limit to the bending rigidity, and further, there are disadvantages such as a review of the cross section of the floor joist due to an increase in the fixed weight for design, and an increase in the cost of the floor joist and the floor plywood in connection therewith.

As another means for solving the above problem,
(1) a floor vibration preventing structure disclosed in Japanese Patent Application Laid-Open No. H11-310974, (2) a vibration preventing structure shown in FIG.

(1) In the floor vibration suppressing structure disclosed in Japanese Patent Application Laid-Open No. H11-310974, a substantially V-shaped metal member is arranged in a direction perpendicular to the axial direction of the floor joist in order to suppress floor vibration. By holding the floor joist at the bottom of the V-shape and fixing the upper end of the V-shape to the floor, horizontal vibration of the floor joist is suppressed. However, in this structure, the V-shaped metal itself does not contribute to the improvement of the rigidity of the entire floor joist, and thus does not effectively reduce the dynamic deflection when an impact force acts on the floor.

(2) FIG. 11 shows Simpson Storong-Tie Comp.
any, Inc). In this method, a plurality of rigid hardwares 5 are installed in a direction orthogonal to the axial direction of the floor joists 3, X-shaped (brace-shaped) are arranged between the floor joists 3, and the end of each hardware 5 is connected to the floor. It is fixed to the upper and lower ends of the joist 3 so that the impact force applied to the floor plate acts on the metal piece 5 via the floor joist 3 as compression and tension.

[0008] However, this vibration suppression structure has a problem in that the joint between the metal fitting 5 and the floor joist 3 is loosened during construction, or the joint is loosened due to a repeated impact force, and the impact force is like a human walking on the floor. When minute vibration, vibration of a larger floorboard, initial deflection of the floorboard, etc. are not effectively transmitted to the hardware 5, the hardware 5 cannot exert the original vibration damping function of suppressing the dynamic deflection of the floorboard as a resistance member. Comes out.
Furthermore, in the case of wooden floor joists, the loosening of the joint between the hardware 5 and the floor joists 3 is also increased due to aging such as wood creep, and as described above, the dynamic deflection of the floorboard cannot be effectively suppressed. Occurs.

[0009]

As described above, the conventional floor vibration suppressing structure does not increase the rigidity of the entire floor joist, and effectively suppresses the dynamic deflection due to the impact force acting on the floor. difficult. Further, even if the dynamic deflection can be effectively suppressed, there is a problem that it is difficult to maintain the dynamic deflection for a long period of time.

An object of the present invention is to provide a floor structure that solves the above-mentioned problems.

[0011]

In order to solve the above-mentioned problems, the present invention is configured as follows.

According to a first aspect of the present invention, two sets of steel strip-shaped tension structures are installed in a direction orthogonal to the axial direction of a plurality of floor joists arranged in parallel, and the adjacent floor joists are formed. The floor joists are arranged in a brace shape by crossing each other, and the floor joists are arranged in tension so as to hold the upper and lower portions of the floor joists, thereby integrating the floor joists via the tension structure and acting on the floor. It is characterized in that it is configured to be able to withstand the entire impact of the floor joist.

According to a second aspect of the present invention, in the first aspect, the tension structure is made of a strip-shaped thin steel plate having a thickness of about 1.0 mm or less.

According to a third aspect of the present invention, the two tension structures arranged crosswise in a brace form approach each other.
By providing additional tensioning hardware between both tension structures, the initial structure of the tension structure and the looseness of the joints, the wooden floor joists and the creep of the joints, etc. Etc.
It is characterized in that it is configured to be able to add tension.

According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the tension additional hardware is a long bolt which penetrates two tension structures arranged in a brace crossing each other. And a nut that is screwed to the long bolt so that one tension structure approaches the other side.

According to a fifth aspect of the present invention, in any one of the first to third aspects of the present invention, the tension additional hardware includes a right-hand screw that penetrates two tension structures intersecting each other and arranged in a brace shape. It is characterized in that it has a turnbuckle structure comprising upper and lower fastening members having left-hand threads, and a joint member having right-hand and left-hand threads screwed to both fastening members.

According to a sixth aspect of the present invention, a pair of steel strip-shaped tension structures is installed in a direction orthogonal to the axial direction of the floor joists, and crosses between a plurality of floor joists arranged in parallel. After being provided in a brace shape, it is arranged so as to hold the upper and lower parts of each floor joist, furthermore, both ends of each tension structure are joined to the side joists, and then between the two tension structures The present invention is characterized in that tension is input to both tension structures using the tension additional hardware provided, and the floor joists are integrated via the tension structures.

[0018]

According to the present invention, by applying tension to the tension structure, the entire floor joist is integrated through the tension structure, and the entire floor is resistant to minute vibrations due to impact force or the like. Can be effectively reduced.
Furthermore, even if aging such as creep of wood causes deflection of the tension structure or loosening of the joint, tension can be input with additional tension hardware, and the entire floor can withstand minute vibrations due to impact force etc. , Moving deflection can be effectively reduced.

When the tension structure does not receive sufficient tension when the tension structure is stretched, if the tension structure flexes, both ends of the tension structure are joined to the lateral joists, and then tension is input with a tension additional hardware. Thereafter, the tension structure and the floor joist are joined.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an explanatory side view of a floor on which a vibration suppression measure according to the embodiment has been applied, FIG. 2 is a plan view of the joist frame shown in FIG. 1, and FIG. 3 is a partial perspective view of the vibration suppressing structure. 4 and 5 are installation explanatory diagrams of the tension additional hardware of the tension structure, FIG. 6 is an enlarged sectional view of an engagement portion between the tension structure and the tension additional hardware, and FIG. 7 is another example of the tension additional hardware. FIG. 8 is an explanatory plan view of a joist frame showing a range of rigidity resistance and inertial weight resistance when an impact force is applied to the floor.

In the present invention, the floor structure is the same as the conventional one,
As shown in FIGS. 1 and 2, a plurality of floor joists (on the wall) 1 and side joists (on the wall) 2 are assembled in a rectangular shape, and are arranged in parallel with a predetermined interval between the end joists 1. The joist 3 is erected, the joist frame 7 is constructed, the floor plate 4 made of plywood is placed on the joist frame 7, and is fixed to the joist frame 7 with a fastener (not shown).

In the present invention, the vibration suppressing structure 10 is constructed on the floor joist 3 by using the tension structure 8 in the joist frame 7. The tension structure 8 has a thickness of 1.0 mm.
It is composed of a strip-shaped thin steel plate having a moderate degree of flexibility or less. The strip-shaped tension structure 8 made of a thin steel plate is formed as a set of two strips, and is installed while being tensioned in a direction orthogonal to the axial direction of the floor joist 3. That is, the tension structures 8 forming one set of two strips are arranged so as to intersect each other between adjacent floor joists 3 to form a brace, and are in contact with the upper and lower end surfaces of each floor joist 3 in a zigzag manner. And the upper and lower end surfaces of each floor joist 3 are firmly sandwiched between two sets of tension structures 8.

Accordingly, since the floor joists 3 are joined together by the tension structure 8 and integrated as a whole, any one of the plurality of floor joists 3 is subjected to impact force or vibration. When it acts, it is evenly transmitted to all other floor joists 3 via the tension structure 8, and as shown in FIG. 8, the range (b) of the rigidity resistance and the inertial weight resistance on the floor is expanded as compared with the conventional case. .

Next, the tension structure 8 is connected to the joist frame 7.
The process of tensioning the installation and the structure of the joint between the tension structure 8 and the floor joist 3 will be described. First, the two tension structures 8 are arranged in a brace shape by crossing each other between adjacent floor joists 3 while passing through the upper and lower portions of each floor joist 3, and both end portions 11 of the tension structural members 8 are arranged.
Is applied to the upper end surface and the lower end surface of the lateral joist 2, and a fastener is driven into the abutting portion to be joined. At this stage, the intermediate portion of the tension structure 8 is not joined to the floor joist 3. This is because if the position near the middle portion of the tension structure 8 is joined to each floor joist 3 in advance, when tension is input to the tension structure 8 using the tension additional hardware 13 (described later), This is because the tension is not evenly transmitted to the entire length of the tension structure 8.

By simply joining the both ends 11 of the tension structure 8 to the lateral joists 2, sufficient tension is not yet applied to the tension structure 8, and the tension structure 8 bends. Additional tension hardware 13
Enter the tension using. Then, the tension structure 8
Is joined to the upper and lower end surfaces of each floor joist 3.

As shown in FIGS. 4 to 6, the additional tensioning hardware 13 includes a long bolt 13a, a nut 13b,
Washer 13c fitted to the neck of bolt head 13h
It is composed of As shown in the figure, the washer 13c bends a part 13d in the circumferential direction into an arc shape so as to smoothly press the side surface of the tension structure 8 that is arranged at an angle to the axis of the long bolt 13a. It is formed. On the other hand, the belt-shaped tension structure 8 made of a thin steel plate has a bolt insertion hole 14 located on the side of the floor joist 3. Then, in the vicinity of the floor joist 3, a long bolt 13a is inserted into the bolt insertion hole 14 formed in each of the two tension structures 8 which are arranged in a brace shape and are vertically separated from each other, and a nut 13b is fastened. I do.

By tightening the nut 13b, the two tension structures 8 which are vertically separated from each other are pulled so as to approach each other. Thereby, the two tension structures 8 extending in a zigzag manner in contact with the upper and lower end surfaces of each floor joist 3 are further tightened, and the upper and lower end surfaces of each floor joist 3 are more strongly held. When a large tension is applied to the tension structure 8 in this manner, the plurality of floor joists 3 are firmly integrated via the tension structure 4. As a result, the rigidity of each floor joist 3 is improved, so that the entire floor can resist even a minute vibration due to an impact force or the like acting on the floor plate 4, and the dynamic deflection can be effectively reduced. In this way, the range (b) of the rigidity resistance and the inertial weight resistance on the floor when an impact force is applied to the floor can be expanded as shown in FIG.

After the tension structure 8 is tensioned by the tension additional hardware 13, as shown in a partially enlarged view in FIG.
By driving the fasteners 12 from the tension structure 8 to the upper and lower end faces of the floor joist 3, the connection between the floor joist 3 and the tension structure 8 can be ensured.

After the tension structure 8 is stretched on the floor joist 3, the additional tension metal member 13 can be re-tightened by a simple operation. That is, when the floor joist 3 is made of wood, even if the tension structure 8 is bent or the joint between the tension structure 8 and the floor joist 3 is loosened due to aging such as creep of the wood, the tension additional hardware 13 is used. The tension can be easily input, the entire floor can resist even a minute vibration due to an impact force or the like applied to the floor, and the effect of effectively reducing dynamic deflection can be maintained for a long time.

The tension additional hardware 13 is a long bolt 1
In addition to 3a, for example, as shown in FIG. 7, a turnbuckle-type tension additional hardware 13i can be used.
In this example, upper and lower fastening members 13e and 13e having right and left threads are inserted into the openings of the upper and lower two tension structures 8, and both members 13e and 13e have right and left threads. They are joined by a joint member 13f. The upper and lower fastening members 13e, 13e have a head 1 at the shaft end.
3g, and a washer 13c is fitted to the neck. Therefore, by turning the joint member 13f to bring the upper and lower fastening members 13e, 13e closer to each other, the two tension structures 8 can be simultaneously tensioned.

FIG. 8 shows an example in which one set of two tension structures 8 is provided for one joist frame 7, but a plurality of sets may be provided. Further, in the illustrated example, an example is shown in which one tension additional hardware 13 is provided for one set of the tension structure 8, but a plurality of tension additional hardware 13 may be provided at intervals.
In the present invention, the end joist 1, the side joist 2, and the floor joist 3
May be wooden or steel, such as channel steel.

[0033]

According to the floor structure of the present invention, a pair of steel strip-shaped tension structures made of two strips are arranged at right angles to the axial direction of the floor joists and intersect each other in a brace shape. Since the floor joists are arranged so as to extend in a zigzag manner through the upper and lower parts of the floor joists, the rigidity of the floor joists can be increased overall and on average, thereby increasing the range of rigid resistance and inertial weight resistance. In addition, it is possible to effectively suppress the dynamic deflection due to the impact force acting on the floor, and it is possible to effectively maintain the effect of suppressing the dynamic deflection for a long period of time. Furthermore, since it has a very simple vibration suppression structure, it is suitable for weight reduction, cost reduction, panelization, and factory production of the floor structure.

[Brief description of the drawings]

FIG. 1 is an explanatory side view of a floor on which a vibration suppression measure according to an embodiment of the present invention is implemented.

FIG. 2 is an explanatory plan view of the joist framework of FIG. 1;

FIG. 3 is a partial perspective view of the vibration suppressing structure.

FIG. 4 is an explanatory view of installation of a tension additional hardware before a tension of a tension structure is added.

FIG. 5 is an explanatory view of installation of a tension additional hardware after the tension of the tension structure is added.

FIG. 6 is an enlarged cross-sectional view of an engagement portion between the tension structure and a tension additional hardware.

FIG. 7 is an installation explanatory view showing another example of a tension additional hardware.

FIG. 8 is an explanatory plan view of a joist frame showing a range of rigidity resistance and inertial weight resistance when an impact force is applied to a floor.

FIG. 9 is an explanatory side view of a conventional general floor.

FIG. 10 is an explanatory plan view of a joist framework showing a range of rigidity resistance and inertial weight resistance when an impact force is applied to a floor in FIG. 9;

11A and 11B are a perspective view of a conventional floor vibration suppression structure and a perspective view of a vibration suppression metal fitting.

[Explanation of symbols]

 Reference Signs List 1 end joist 2 side joist 3 floor joist 4 floor plate 5 hardware 6 joint 7 joist frame 8 tension structure 9 fastener 10 vibration suppression structure 11 both ends 12 fastener 13 additional tension hardware 13a long bolt 13b nut 13c additional washer 13d Hardware 13e Upper and lower fastening hardware 13f Joint member 13i Additional tension hardware 14 Bolt insertion hole

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[Procedure amendment]

[Submission date] June 13, 2001 (2001.6.1
3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Fig. 5

[Correction method] Change

[Correction contents]

FIG. 5

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Fig. 6

[Correction method] Change

[Correction contents]

FIG. 6

Claims (6)

[Claims] A steel strip-shaped tension structure, which is a set of two strips, is installed in a direction orthogonal to the axial direction of a plurality of floor joists arranged in parallel, and crosses between adjacent floor joists. The floor joists are arranged in a brace shape, and are arranged so as to hold the upper and lower parts of each floor joist, thereby integrating the floor joists via the tension structure and reducing the impact force acting on the floor. On the other hand,
A floor structure characterized by a structure that can resist the entire floor joist. 2. The tension structure according to claim 1, wherein the thickness is about 1.
The floor structure according to claim 1, wherein the floor structure is made of a strip-shaped thin steel sheet having a thickness of 0 mm or less. 3. An initial bending or joining of the tension structure by providing a tension additional metal between the two tension structures so that the two tension structures arranged in a bracing manner and approaching each other. The floor structure according to claim 1 or 2, wherein a tension can be added to bending of the tension structure or loosening of the joint due to secular change such as loosening of the part, wooden floor joist and creep of the joint. 4. The tension-adding hardware includes a long bolt that penetrates two tension structures arranged in a brace shape so as to intersect with each other, and the long bolts so that one tension structure approaches the other side. The floor structure according to any one of claims 1 to 3, comprising a nut screwed into the measuring bolt. 5. An upper and lower tightening member having a right-hand screw and a left-hand screw, which penetrates two tension structures arranged in a brace shape so as to cross each other,
The floor structure according to any one of claims 1 to 3, wherein the floor structure is a turnbuckle structure including a joint member having a right-hand thread and a left-hand thread that are screwed to both fastening members. 6. A steel strip-shaped tension structure, which is a pair of steel strips, is installed in a direction orthogonal to an axial direction of a floor joist.
A plurality of floor joists arranged in parallel intersect and are provided in a brace shape.They are arranged so as to hold the upper and lower parts of each floor joist.Furthermore, both ends of each tension structure are connected to side joists. Joining, then, by inputting tension to both tension structures using the tension additional hardware provided between the two tension structures, integrating each floor joist via the tension structures. How to build a floor.