JP2010261200A - Structure for joining structural material made of steel frame and the like, by high-strength bolt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the number of high-strength bolts for use by increasing a frictional force generated at a high-strength bolt friction joint for joining building structural materials made of a steel frame and the like. <P>SOLUTION: In this joining structure P, a splice plate (S1), which covers joints (L1b) and (L2b) of a pair of base materials (L1) and (L2) astride them, and a frictional sheet material (Q1a), which is positioned between the splice plate and the joint (L1b), are tightened and held in a sandwiched state by the high-strength bolt (U1a). An annular high-strength bolt action area (H1) is formed in such a manner as to share the central axis (C1) of the high-strength bolt (U1a), outside a high-strength bolt tightening force enabling area (G1) which stretches out concentrically from the central axis (C1). The thickness of the frictional sheet material (Q1a) is increased by a dimension (Δd1C) of increased thickness for compensating the deformation of the splice plate, adequate for the filling of a slight amount of joint surface void (g1) formed between the frictional sheet (Q1a) and the splice plate (S1), by the warping of the splice plate (S1) in the area (H1). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a joining structure for joining structural members such as steel frames when forming a frame mainly composed of structural members such as steel for construction, and in particular, effective high-strength bolt friction joining is effective. Is realized.

At the recent construction site, as a method of forming the framework of structural materials such as steel frames (columns, beams, etc.) for construction, because of high evaluation from the viewpoint of high rigidity of the joint structure and excellent workability at the site, High-strength bolt friction joining methods characterized by the adoption of high-strength bolts having a strength 2-3 times that of ordinary bolts have become mainstream.
In such a friction joining method, basically, a plurality of joining members stacked on each other are strongly pressed from both sides with high-strength bolts, and the friction force generated between the joining surfaces of each joining member causes slippage between the joining surfaces. This is a shear type joining method that can generate a proof stress (resistance force) and thereby transmit a stress in a direction perpendicular to the central axis of the bolt using the slip proof strength. Therefore, in order to improve the joining strength, it is important to realize a high slip coefficient between the joining surfaces of each joining member. In this regard, the provisions of Article 92-2 of the Building Standard Law Enforcement Ordinance “0 The realization of a slip coefficient value of .45 "or more is sought. In order to realize this slip coefficient value, the following methods are typically known, but unsolved technical problems inherent in these methods are often pointed out.

[1] The method of applying a surface treatment to the joint surface in the case of the steel structure material by shot blasting, sand blasting, grid blasting, etc. has become established as a premise basic technique for carrying out the friction welding method. Is known as an on-site empirical rule that it is difficult to realize a slip coefficient value of 0.45 or more. However, it is also known that there are cases where it is difficult to carry out surface treatment in the site due to the fact that the period from factory shipment of the joining member to the assembly work of the member on site is different. ing.
[2] As a typical method of surface treatment in the case of the steel structure material of [1], the method of rusting the joint surface after removing the black skin is the steel structure design standard of the Architectural Institute of Japan. And by the Ministry of Construction Notification No. 1309, many cases of realizing a slip coefficient value of 0.45 or more are known empirically by this method. However, in the same manner as in the above [1], (1) in addition to the fact that the period of time until the assembly work of the member is varied depending on the rusting treatment work, the field work is subject to restrictions, (2) In order to avoid slip coefficient deterioration due to excessive rusting and to manage appropriate rusting conditions, highly skilled workers are required in field work, and (3) these days are promising. It is known that there is a disadvantage that the rusting treatment cannot be applied to the joining structure made of stainless steel or aluminum.
[3] The method of applying a paint containing stainless steel powder or the like to the joint surface during field work is mainly aimed at eliminating the disadvantages of the above [2] (3). This is a technique disclosed in Kaihei 1-268940. However, in this method, (4) the paint containing stainless steel powder becomes vigorous and high-viscosity, and it is easy to apply paint thickly on the spot. It is known that there is a disadvantage that the coating thickness gradually decreases with time, and due to this, the bolt must be retightened.
[4] A fine sheet of high hardness and strong toughness such as alumina or zirconia is mixed with a synthetic resin adhesive, and a thin sheet material that has not been pre-applied or impregnated with it is interposed on the joint surface during assembly on site. The manner of wearing is mainly intended to eliminate the disadvantages [2] (1) (2) to [3] (4), and is typically disclosed in Japanese Patent Laid-Open No. 1-164807. Technology.
[5] The method of spraying and applying a corrosion-resistant metal in a semi-molten state by plasma spraying over the entire joining surface of the joining member is mainly aimed at eliminating the disadvantages of [2] (2). Typically, this is a technique disclosed in JP-A-1-164807.
[6] The method of plasma spraying titanium carbide, zirconium carbide, tungsten carbide, etc. in a circular shape around the high-strength bolt on the joint surface with the bolt and the central axis in common is mainly described in the above [2] (3). In addition to reducing the number of high-strength bolts used to tighten the joint members, the high slip coefficient value between the joint surfaces of each joint member is efficiently realized. Typically, this is a technique disclosed in Japanese Patent Laid-Open No. 1-266309.
[7] A disc-shaped friction plate manufactured in advance according to the size of the range in which the tightening force of the high-strength bolt is applied, which is equal to or higher than that of the above-mentioned joining member, and has a high hardness and high toughness. The method of inserting the joint surface on the joint surface in common with the center axis of the bolt is directed to eliminating the disadvantages of the above [2] (1) (2) and non-patent literature (“Steel” The range of effective tightening force with high-strength bolts is around the center axis of the bolts, according to the disclosure of “Structural Bonding Material Collection”, Steel Club, Japan Steel Structure Association, Gihodo Publishing pp. 323-327) The number of high-strength bolts for tightening the joining members is efficiently realized by efficiently realizing a high slip coefficient value between the joining surfaces of each joining member based on the knowledge of the point limited to the circular area of a specific radius of Reduction oriented, typical Is a technique disclosed in JP-A 5-331918 by the present applicant.

  In general, regarding the high-strength bolt friction joining method based on the rusting treatment that has been widely adopted in the past, the rusting treatment itself is limited in the schedule freedom in the work process and the skill level required by the worker. Due to the inherent burden of burden, the joint structure derived from this destabilization (slip coefficient variation) or a sense of caution against deterioration of quality, it tends to run to overpower, momentum, The use of high-strength bolts more than the number necessary to secure a slip coefficient value of “0.45”, which is an appropriate value, is acceptable, so from the viewpoint of securing the appropriate value of the slip coefficient, By selecting the number of bolts as critical, it was far from pursuing economic efficiency. Therefore, based on the proposed improvement technology that avoids the use of rusting treatment, which has such inherent difficulties, and also on the premise of avoiding the use of rusting treatment, the friction coefficient-dependent friction force Matching the shape of the friction part for generating slip resistance (resistance force) between the faces to the shape of the range where the tightening force of the high-strength bolt works on the joint surface (concentric shape from the center axis of the bolt) With the proposed improvement technology that facilitates the design management of slip strength and efficiently generates the slip strength, the number of high-strength bolts can be reduced and the efficiency of frame assembly work for structural materials such as steel frames can be reduced. There are promising efforts to make it easier.

  However, with these proposed improvements, in most cases, the slip coefficient at the joint surface is increased to an appropriate value of “0.45” and it is difficult to manage the design to maintain this. Therefore, it has been found that it is difficult to reduce the number of high-strength bolts as they leave the laboratory and proceed to the implementation stage at the work site.

  The inventor of the present application has sought to elucidate the cause that makes it difficult to maintain the slip coefficient at the joint surface to an appropriate value of “0.45” in the actual site, and as a result, succeeded in elucidating the result. The present invention has been completed.

  With regard to a bonded structure using a high-strength bolt friction bonding method for a frame of a structural material such as a steel frame (column or beam), typically, the ends of two structural materials such as a steel frame (hereinafter referred to as a base material) are applied. A pair of upper and lower accessory plates extending across the ends of both base materials in the longitudinal direction of the base material so that the base material is sandwiched from above and below along the upper and lower surfaces of the base material of the joint portion facing or opposite to each other It is a precondition that a high-strength bolt is passed through both base materials, and the pair of upper and lower plates are fastened to the joints of both base materials by the bolts. In contrast to such a premise structure, in the structure of the improvement proposal that avoids rusting treatment, the upper and lower surfaces of the base material and the surfaces of the pair of accessory plates facing these surfaces ( A frictional force generating element is interposed between the base material itself and the surface of the accessory plate itself, and this causes the frictional force generating element to respond to the tightening force of the high-strength bolt, A frictional force is generated on the joint surface of the joint member of the joint structure. The structural materials (columns and beams) as the base material mentioned here include not only those made of steel, but also those made of stainless steel, aluminum, and wood.

  However, according to the present inventors, in many cases, the function of the frictional force generating element is not uniform in a plane, but within a predetermined radius that is concentrically separated from the central axis of the high-strength bolt. Appears in a circular shape at a position where the high-strength bolt tightening force sufficiently works, and appears at a position sufficiently concentrically separated from the central axis, A high-strength bolt tightening force acting region where the force appears but annularly appears between the high-force bolt tightening force inactive region where no force acts, A frictional force generating element interposed between the upper and lower surfaces of the base material and the surfaces of the pair of accessory plates facing the surfaces (including the base material itself or the surface of the accessory plate itself) Since the generated frictional force is suppressed in an unstable manner, the frictional force suppression phenomenon has been recognized in the past. From what has not been, it was difficult to sufficiently "0.45" needed to generate the frictional force over the management of the design for stably securing the slip coefficient values here.

  Furthermore, according to the present inventors, the present inventors have earnestly clarified that the suppression of the frictional force in the high-strength bolt tightening force action region is responsive to the reaction of the tightening force by the high-strength bolt. Each of the accessory plates is deformed so as to be warped away from the upper and lower surfaces of the base material, and as a result, interposed between the upper and lower surfaces of the base material and each surface of the pair of accessory plates. By reducing the adhesion of the generated friction force generating element to the accessory plate, the tightening force from the high strength bolt to be transmitted to the friction force generating element via the accessory plate is reduced. This is due to the phenomenon.

  In conventional bonded structures using high-strength bolt friction welding, the slip coefficient value in the frictional force generating element, and thus the frictional force generated here, is suppressed in an unstable manner due to such deformation of the accessory plate. The problem is that it is difficult to manage the design in order to increase the slip coefficient to an appropriate value of “0.45” and maintain it, and therefore it is also difficult to reduce the number of high-strength bolts. there were.

JP-A-1-268940 JP-A-1-164807 JP-A-1-164807 JP-A-1-266309 JP-A-5-331918 “Steel Structure Joining Materials Collection”, Steel Club, Japan Steel Structure Association, Gihodo Edition, pp. 323-327

  The problem of the present invention is that it is difficult to manage the design for maintaining the appropriate value of the slip coefficient due to the unstable suppression of the slip coefficient value in the friction force generating element of the joint structure using the conventional high strength bolt friction joining method. In view of this problem, the high-force bolt tightening of the friction force generating element is related to the thickness dimension of the friction force generating element within the high-force bolt tightening force acting region in order to cope with the deformation of the pair of accessory plates. By selecting a plate deformation compensation value obtained by adding a thickness increment for plate deformation compensation to compensate for the deformation of the plate against the thickness of the high strength bolt fastening force effective region within the force effective region, The object is to provide a bonded structure of structural materials such as steel frames (columns and beams) using superior high-strength bolts that solve the problem.

The invention described in claim 1 provides means for solving the problems of the present invention by cooperation of the following configurations.
The first base material has a quadrilateral end face extending in the longitudinal direction and appearing in a cross section perpendicular to the longitudinal direction. The second base material is also a quadrilateral end surface extending in the longitudinal direction and appearing in a cross section perpendicular to the longitudinal direction, and is in contact with the end surface of the first base material in alignment or with a gap. It has an end face which faces through. The pair of accessory plates extends in a longitudinal direction across the first and second base materials, and the end surface of the first base material and the end surface of the second base material are aligned. A pair of outer surfaces of the base material of the joint portion that are in contact with each other or face each other via a gap are sandwiched between the pair of outer surfaces extending in parallel with each other.
In the base material of the joint and the pair of accessory plates, a high-strength bolt hole is formed so as to pass through the base material and the accessory plate pair in a direction perpendicular to the longitudinal direction of the base material. Has been perforated. The high-strength bolt metal fitting is inserted through the high-strength bolt hole and fastens the pair of accessory plates to the pair of outer surfaces of the base material.
The friction sheet material as a frictional force generating element is in close contact between one outer surface of the base material and the inner surface of one accessory plate facing the outer surface of the pair of accessory plates. It is disguised.
The friction sheet material may be a plate-like material or a cloth-like or foil-like material having an appropriate thickness. In addition, as a material of the friction sheet material, typically, steel material that is frequently used for structural materials such as steel frames (columns and beams) as a base material, or equivalent to or higher than that of steel material, a hardness value higher than that. Metals or ceramics having high toughness are preferred. Since a rusting treatment is not required, a stainless steel base material can also be a bonding target.
In the case of a steel structure, with respect to the surface condition of the outer surface of the base material of the joint portion facing the friction sheet material and the inner surface of the accessory plate, the black skin remains without being subjected to the black skin removal treatment. It may be in a state, or it may be in a state where only the black skin is removed by performing a black skin removal treatment, or may be in a state where surface treatment such as shot blasting, sand blasting, grid blasting, etc. is applied, or after performing the same surface treatment. Further, a state in which rusting treatment is performed may be used.
In the friction sheet material, a friction sheet material hole that is aligned with the hole for the high-strength bolt and allows the high-strength bolt fitting to pass therethrough is drilled so as to share the central axis of the high-strength bolt, The thickness dimension of the friction sheet material in the direction of the central axis of the friction sheet material hole is concentrically spread on the friction sheet material from the central axis of each of the friction sheet material holes. In each high-strength bolt tightening force action region, which is selected as a constant uniform high-strength bolt tightening force effective region thickness, and further concentrically extends outside each high-strength bolt tightening force effective region, The plate deformation compensation value obtained by adding the thickness increment for compensating the plate deformation to the effective area thickness is selected.

The invention described in claim 2 provides means for solving the problems of the present invention by cooperating with the following additional structure based on the function of the structure of the invention described in claim 1 above. is there.
In the region where the high-strength bolt tightening force is applied, the splicing plate deformation compensation value is selected as a variable splicing plate deformation compensation value that tends to increase according to the distance from the center axis of the friction sheet material hole. Yes. In order to facilitate obtaining the variable compensation plate deformation compensation value corresponding to the distance from the center axis of the friction sheet material hole, a high strength bolt diameter, a clamping force, a shape dimension of the accessory plate, Using the mechanical attributes of the accessory plate, the shape and size of the friction sheet material, and the mechanical attributes of the friction sheet material as parameters, an experimental function can be prepared for each distance away from the central axis of the friction sheet material hole. .

The invention described in claim 3 provides means for solving the problems of the present invention in cooperation with the following additional structure on the premise of the function of the structure described in claim 2 above. is there.
Outside each high-strength bolt tightening force acting region, in each high-strength bolt tightening force inactive region further spreading concentrically on the friction sheet material from the central axis of each friction sheet material hole. The splicing plate deformation compensation value is selected to be uniform and equal to the maximum value of the variable splicing plate deformation compensation value within the high-strength bolt tightening force acting region. Since the friction sheet material in the high strength bolt tightening force inactive region does not participate in the generation of the friction force between the joint surfaces of the joint member, the intervention can be omitted.

The invention described in claim 4 provides means for solving the problems of the present invention by cooperating with the following additional structure based on the function of the structure of the invention described in claim 2 above. is there.
The variable additive plate deformation compensation value of the thickness dimension of the friction sheet material in the central axis direction of the friction sheet material hole is calculated from the center of the thickness dimension of the member having rigidity as the friction sheet material. It is defined by one or both of the thickness dimension up to the surface facing one accessory plate and the thickness dimension from the center to the surface facing the base material.

The invention according to claim 5 provides means for solving the problems of the present invention by cooperating with the following additional structure on the premise of the function of the structure according to claim 4. is there.
A friction surface is formed by forming a rough surface on one or both of a surface facing one of the plate pairs of the member having rigidity as the friction sheet material and a surface facing the base material. A friction-enhancing surface treatment layer is further provided to increase the friction. The rough surface may be formed by rusting surface treatment or mechanical surface treatment such as shot blasting, sand blasting, grid blasting, etc., or may be formed by plasma spraying metal particles or corrosion-resistant ceramic particles. Good. Since the latter plasma spraying can form a stainless particle layer or an aluminum particle layer, it is convenient to use a base material made of stainless steel or aluminum as a bonding target.

The invention described in claim 6 provides means for solving the problems of the present invention by cooperating with the following additional structure based on the function of the structure of the invention described in claim 2 above. is there.
The variable faced plate deformation compensation value of the thickness dimension of the friction sheet material in the direction of the central axis of the friction sheet material hole is a surface facing one plate of the plate pair of the friction sheet material and the base material Is defined by the thickness dimension of the metal particle layer having rigidity formed by thermal spraying on one or both surfaces facing each other. The metal particle layer includes those by plasma spraying such as stainless steel particles and aluminum particles. According to this, a base material made of stainless steel or aluminum can be used as a bonding target.

  According to the first aspect of the present invention, the friction sheet material is interposed between the joining surfaces of the joining member, and the thickness of the friction sheet material is concentrically formed on the friction sheet material from the central axis of the friction sheet material hole. Within the effective area of the high-strength bolt tightening force that spreads out, select a uniform and uniform effective area thickness, and concentrically outside the high-strength bolt tightening force effective area, annularly at a position separated by a predetermined distance. Appears and the high strength bolt tightening force works, but within the high strength bolt tightening force acting area where the work is not sufficient, the thickness of the plate deformation compensation of a predetermined thickness is added to the effective area thickness. By adopting a configuration that selects the deformation compensation value of the attached plate, the attached plate is deformed so as to warp away from the surface of the base material in response to the reaction of the tightening force by the high-strength bolt. Due to the surface of the accessory plate as a joining member Since it is possible to effectively prevent the adhesion of the friction sheet material from being reduced, the tightening force from the high-strength bolt is sufficiently transmitted to the friction sheet material via the accessory plate. Enables design management to stably maintain the slip coefficient value on the surface at an appropriate value of “0.45” or more, and as a result, it is possible to reduce the number of high-strength bolts. Is played.

  According to a second aspect of the present invention, the friction plate material in the configuration of the first aspect of the present invention is related to the above-mentioned plate deformation compensation value representing the thickness of the friction sheet material in the high-strength bolt tightening force acting region. By adopting a configuration in which the variable compensation plate deformation compensation value that exhibits an increasing tendency according to the distance from the center axis of the sheet material hole is selected, the adhesion of the friction sheet material to the surface of the accessory plate is reduced. Can be avoided more accurately and completely, and the design management for stably maintaining the slip coefficient value at the appropriate value of “0.45” or more can be further facilitated. There is an excellent effect that the reduction of the number can be more easily realized.

According to a third aspect of the present invention, with respect to the splice plate deformation compensation value in the configuration of the second aspect of the present invention, a high force further spreading concentrically outside the high strength bolt tightening force acting region. In the bolt tightening force inactive region, a constant uniform maximum value of the plate deformation compensation value representing the thickness within the high strength bolt tightening force operation is selected as the plate deformation compensation value. This makes it possible to select the shape of the accessory plate within the high-intensity bolt tightening force inactive region, which is not involved in the generation of frictional force, so that the degree of freedom in designing the shape of the friction sheet material is improved. There is an accompanying effect.
In addition, in the high strength bolt tightening force inactive region, the high strength bolt tightening applied to another adjacent high strength bolt is ensured by interposing adjacent high strength bolt tightening force inactive regions. It is not necessary to consider force interference between the force effective region or the high-strength bolt tightening force action region. There is also an accompanying effect.

  According to a fourth aspect of the present invention, with respect to the variable added plate deformation compensation value in the configuration of the second aspect of the invention, from the center of a member having rigidity as the friction sheet material, the mother of the member is provided. By changing the thickness to the surface facing the material or the accessory plate according to the concentric separation distance from the central axis of the friction sheet material hole, the friction sheet material Since the change in thickness can be realized by a conventional metal cutting process, there is an accompanying effect that a stable quality can be obtained at low cost.

  According to the invention described in claim 5, regarding the surface of the rigid member as the friction sheet material in the configuration of the invention described in claim 4, the friction coefficient between the joining members is increased in order to increase the friction coefficient. By forming the ancestor surface on the surface, the friction enhancement surface treatment layer is provided, so that the cost burden can be reduced by conventional metal cutting, but the slip coefficient value is set to an appropriate value. There is an accompanying effect that it can be stably maintained at a value of 0.45 "or more.

  According to the invention described in claim 6, regarding the variable additive plate deformation compensation value of the friction sheet material in the configuration of the invention described in claim 2, from the center of the member having rigidity as the friction sheet material, The thickness of the member up to the surface facing the base material or the accessory plate is formed by spraying a rigid metal particle layer on the surface of the friction sheet material, and the thickness of the metal particle layer is determined by the friction sheet material hole. By changing according to the concentric separation distance from the central axis, by changing the thermal spraying conditions such as the thermal treatment time, etc., according to the concentric separation distance In addition, it is possible to easily and highly accurately control the variable compensation plate deformation compensation value, which can be applied to stainless steel joint structures by selecting the metal particles to be sprayed. So in general, Incidental effect that acceptable degree spread on the morphology and material of the diversity of the case structure is achieved.

  FIG. 1 shows a high-strength bolt friction joint structure of a steel structure, which is a precondition of an embodiment of the present invention. In FIG. 1, the longitudinal direction of a square steel pipe column (1) provided vertically is shown. An H-shaped steel beam (2) having a pair of flanges (2b) (2b) orthogonally coupled to the upper and lower sides of the web (2a) and a web (2a) is horizontally provided at the intermediate position of the web. The left H steel beam (2A) appearing on the left side in the drawing of the steel beam (2) and the right H steel beam (2B) appearing on the right side in the drawing are the flanges of the joint portion of the left H steel beam (2A). (2bA) (hereinafter referred to as the first base material (L1)) and the flange (2bB) (hereinafter referred to as the second base material (L2)) of the joining portion of the right H steel beam (2B) Similarly, the web (2aA) of the joining portion of the left and right H-shaped steel beams (2A) and (2B) is joined by the joining member (3) (hereinafter referred to as the accessory plate (S)). Regarding (2aB), they are connected to each other by a joining member for web (4).

FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1 for extracting and showing a joined structure composed of the joining member (4) for the flange, and the joined structure in FIG. This is a friction bonded structure by a bonding method. In FIG. 2, the first base material (L1) and the second base material (L2) extend in the longitudinal direction while sharing the center line in the longitudinal direction, and have four sides on the cut surface perpendicular to the longitudinal direction. It has the front-end | tip part (L1a) (L2a) where the cross section of a shape appears, and this front-end | tip part is arrange | positioned so that it may face through a space | gap (g).
The first and second base materials (L1) and (L2) are sandwiched between a pair of upper and lower outer surfaces extending in parallel and facing each other. A pair of upper and lower plates extending in the longitudinal direction across the surface (the one on the upper outer surface is called the first plate (S1), and the one on the lower outer surface is the second plate ( S2)) is arranged. These first and second accessory plate pairs (S1) and (S2) have the same rigidity as that of the structural material such as the steel frame employed as the first and second base materials (L1) and (L2). It is made of steel structure material.
Of the base materials (L1) and (L2), the first and second base materials (L1) and (L2) sandwiched between a pair of upper and lower first and second accessory plates (S1) and (S2). The base material joining portion (L1b) (L2b) including the tip portion (L1a) (L2a) is orthogonal to the longitudinal direction of the joining portion and the first and second accessory plates (S1) (S2). Four high-strength bolt holes (T1a) (T1b) (T1b) (T1b) so that the joint portions (L1b) (L2b) of the base material and the pair of accessory plates (S1) (S2) pass through in a direction. T2a) (T2b) are drilled. Of the four high-strength bolt holes, two (T1a) and (T1b) are arranged at predetermined intervals in the longitudinal direction at the joint (L1b) of the first base material. The two (T2a) and (T2b) are also arranged in the same manner at the joint (L2b) of the second base material.

  Four high-strength bolts (U1a) (U1b) (U2a) (U2b) are inserted into the four high-strength bolt holes (T1a), (T1b), (T2a), and (T2b). is doing. The heads of the high-strength bolts (U1a), (U1b), (U2a), and (U2b) are connected to the first through four washers (V1a), (V1b), (V2a), and (V2b) having appropriate diameters (r). 4 nuts (W1a) (W1b) (W2a) (W2b) are individually attached to the tip of the high-strength bolt. In the same manner as described above, it is locked to the lower surface of the second accessory plate (S2) via four washers (V1a) (V1b) (V2a) (V2b) having a diameter (r). Thus, a pair of first and second accessory plate pairs (S1) and (S2) are fastened to the upper and lower surfaces of the joint portions (L1b) and (L2b) of the first and second base materials. Yes.

When the first and second accessory plate pairs (S1) and (S2) are fastened to the joint portions (L1b) and (L2b) of the first and second base materials (L1) and (L2), Between the lower surface of the accessory plate (S1) and the upper surface of the joint portion (L1b) of the first base material facing the first upper friction sheet material (Q1a) as a frictional force generating element Similarly, the second upper friction sheet material (Q2a) is disposed between the lower surface of the first accessory plate (S1) and the upper surface of the joint portion (L2b) of the second base material. ) Is installed.
On the other hand, there is a frictional force generating element between the upper surface of the second accessory plate (S2) and the lower surface of the joint portion (L1b) of the first base material facing the second accessory plate (S2). The first lower friction sheet material (Q1b) is interposed, and similarly, between the upper surface of the second accessory plate (S2) and the lower surface of the joint portion (L2b) of the second base material. Is provided with a second lower friction sheet material (Q2b).
In addition, the following description regarding the structure of an Example is the upper side in which the 1st upper friction sheet material (Q1a) and the 2nd upper friction sheet material (Q2a) are included among the said symmetrical structures. Only directed to the configuration.

The first and second friction sheet materials (Q1a) and (Q2a) may be plate-shaped or cloth-shaped or foil-shaped with an appropriate thickness. In addition, as a material of the friction sheet material, typically, steel material frequently used as a base material such as a steel frame (column or beam), or equivalent to or higher than that of steel material. Metals or ceramics having a high hardness and high toughness are preferred.
As the form of the friction sheet material (Q1a) (Q2a), as shown in FIG. 2, the thickness of the joint portion (L1b) (L2b) of the first and second base materials (L1) (L2). In a normal configuration in which the thickness dimensions are the same, the thickness dimensions of the first and second friction sheet materials (Q1a) and (Q2a) are selected to be the same dimensions. In the configuration in which the thickness dimensions of the portions (L1b) and (L2b) are inconsistent with each other and there is a step in the longitudinal direction of the joint portion, the first step is formed so as to form a step that matches the step. The thickness of the second friction sheet material (Q1a) (Q2a) at the joint is preferably different.
Further, as a form to be added, in addition to a form divided into units of the first and second joint portions (L1b) and (L2b), the gap between the first and second joint portions (L1b) and (L2b) ( The friction sheet material (Q1a) (Q2a) may be integrated so as to straddle g).
In the configuration of FIG. 2, the first and second accessory plate pairs (S1) and (S2), the first and second base metal joints (L1b) and (L2b), and the first The joining member is constituted by the second upper friction sheet material (Q1a) (Q2a) and the first and second lower friction sheet materials (Q1b) (Q2b), and includes the whole joining member. A typical structure is the joining structure P of a structural material such as a steel frame as referred to in this specification.

FIG. 3 schematically shows the upper surface of the first upper friction sheet material (Q1a) and the second upper friction sheet material (Q2a) extracted from the cross-sectional view taken along the line BB in FIG. In FIG. 2, the constituent elements indicated by the same reference numerals as those indicating the constituent elements are the same.
The four circles with the smallest diameter in FIG. 3 are center axes (C1) (C2) to be aligned with the center axes of the four high-strength bolts (U1a) (U1b) (U2a) (U2b) in FIG. Four friction sheet material holes (F1), (F2), (F3), and (F4) sharing (C3) are expressed. That is, corresponding to the four washers (V1a) (V1b) (V2a) (V2b) having the central axes (C1), (C2), (C3), and (C4) and interposed for each bolt, The friction sheet material holes (F1), (F2), (F3), and (F4) having a diameter (r) smaller than that of the washer are the diameters from the central axis are the first and second friction sheet materials ( It is drilled in Q1a) (Q2a).

In FIG. 3, the friction sheet material holes (F1), (F2), (F3), and (F4) have four friction sheet material hole center axes (C1), (C2), (C3), and (C4). Thus, different circular shapes concentrically appear, and the circular shapes represent the high-strength bolt tightening force effective regions (G1) (G2) (G3) (G4).
In the high strength bolt tightening force effective region (G1) (G2) (G3) (G4), the tightening force by the high strength bolts (U1a) (U1b) (U2a) (U2b) typically acts effectively. And since this fastening force is converted into the frictional force between the joint surfaces of the said joining member, slip resistance (resistance force) generate | occur | produces between this joint surfaces stably.

In FIG. 3, on the further outer side of the high strength bolt tightening force effective region (G1) (G2) (G3) (G4), the central axes (C1) (C2) (C3) ( In contrast to C4), different circular shapes (concentric annular shapes) appear concentrically, and the circular shapes have high-force bolt tightening force action regions (H1) (H2) (H3) (H4). expressing.
In the high-force bolt tightening force application region (H1) (H2) (H3) (H4), the tightening force by the high-strength bolts (U1a) (U1b) (U2a) (U2b) acts effectively for the time being. However, because of the factors related to the elucidation of the inventors of the present invention, which will be described later, the slip proof strength (resistance force) generated between the joint surfaces of the joint member is the effective bolt tightening force effective region (G1) (G2) ( G3) It has been found that it shows a decreasing tendency relative to what works in (G4).
According to further elucidation by the inventor of the present application, the slip strength (resistance force) generated between the joining surfaces of the joining members in the high-strength bolt fastening force action region (H1) (H2) (H3) (H4). The decreasing tendency of each has a planar change tendency that increases in accordance with the distance from the central axis (C1) (C2) (C3) (C4) of each of the different friction sheet material holes.

In FIG. 3, on the further outer side of the high-strength bolt tightening force acting region (H1) (H2) (H3) (H4), in the embodiment here, the first shape which is rectangular in plan view. From the entire area of the second upper friction sheet material (Q1a) (Q2a), the high-strength bolt tightening force acting area (H1) (H2) (H3) (H4) and the high-strength bolt tightening force effective area (G1) (G2) (G3) (G4) is virtually removed, and the remaining shape appears in the high-force bolt tightening force inactive region (I1) (I2) (I3). (I4) is shown.
In the high strength bolt tightening force non-operating region (I1) (I2) (I3) (I4), the tightening force by the high strength bolts (U1a) (U1b) (U2a) (U2b) is not exerted. No slip strength (resistance force) is generated between the joint surfaces. In other words, the high-strength bolt tightening force inactive region does not work as the joining member in this specification, but relates to the friction sheet material (Q1a) (Q2a) itself in the joining member. This is advantageous in ensuring a degree of freedom in shape selection in design.
In addition, the high-strength bolt tightening force non-operation area (I1) (I2) (I3) (I4) corresponds to each of the high-strength bolt tightening force operation areas (H1) (H2) (H3) (H4). By interposing them, it is possible to avoid the occurrence of overlapping portions of the high-strength bolt tightening force acting regions, so that the overlapping of the frictional forces acting in each of the high-strength bolt tightening force acting regions. Interference at the portion is prevented, thereby facilitating the design of the thickness dimension of the first and second friction sheet materials (Q1a) and (Q2a) in the high-strength bolt tightening force acting region.
Regarding the existence of such a high-strength bolt tightening force inactive region, the high-strength bolts (U1a), (U1b), (U2a), and (U2b) transmit the tightening force to the first and second attachment plates (S1). ) (S2) does not extend over the entire plate surface, and is critical within the predetermined high-strength bolt tightening force action region (H1) (H2) (H3) (H4) centered on the high-strength bolt. Therefore, the invention disclosed in Japanese Patent Laid-Open No. 5-331918 of the prior application by the present inventor is also based on the above knowledge.
According to the verification test in which the above knowledge is applied to the embodiment of the present invention, when the diameter of the high strength bolt (U1a) (U1b) (U2a) (U2b) is 20 mm, the high strength bolt tightening force effective region The diameters of (G1), (G2), (G3), and (G4) are 55 mm to 60 mm, and the diameters of the high-strength bolt tightening force acting regions (H1), (H2), (H3), and (H4) are 75 mm to 85 mm. It is.

Then, the joint portion (L1b) of the first base material in the vicinity of one high-strength bolt among the four high-strength bolts (U1a) (U1b) (U2a) (U2b); Extracting a joining member (P) comprising the first and second accessory plate pairs (S1) (S2), the first upper friction sheet material (Q1a), and the first lower friction sheet material (Q1b) The first embodiment will be described as follows based on the explanatory views of FIGS. 4 and 5 expressed in cross-sectional views.
The explanatory view of FIG. 4 shows a normal operating state of the joining member (P) in which the embodiment is not adopted, and in order to make it easier to understand the gist of the invention of this application. FIG. 5 shows the operating state of the joining member (P1) of the first embodiment according to the present invention. 4 and 5, the constituent elements indicated by the same reference numerals as those in FIG. 2 are the same.

First, as shown in FIG. 4, in the joining member (P), the high-strength bolt (U1a) is tightened when assembling the framework made of the steel structure material. When the tightening force is propagated to the joining member (P), the sliding force (resistance force) is generated between the joining surfaces due to the frictional force generated between the joining surfaces of the joining member. The first accessory plate (S1) is warped away from the first upper friction sheet material (Q1a) around the high-strength bolt (U1a), although it is very small due to the reaction of the slip strength. 4, the upper surface of the first upper friction sheet material (Q1a) and the lower surface of the deformed first accessory plate (S1) are deformed in the directions of arrows (X) and (X). A very small amount of bonding surface gaps (g1) and (g1) are formed between the two. 4 and 5 are exaggerated and schematically represented in this manner, but the actually formed bonding surface gaps (g1) and (g1) are extremely small, so that The existence itself was not recognized.
Similarly, in FIG. 4, the second accessory plate (S2) is warped away from the first lower friction sheet material (Q1b) around the high-strength bolt (U1a). (Y) By deforming in the direction of (Y), a very small amount is formed between the lower surface of the first lower friction sheet material (Q1b) and the upper surface of the deformed second accessory plate (S2). Voids (g2) and (g2) are formed.
It should be noted that when the upper surface of the first upper friction sheet material (Q1a) facing the lower surface of the first accessory plate (S1) and the upper surface of the second accessory plate (S2) are opposed, The lower surface of the friction sheet material (Q1b) on the side is covered with first and second surface treatment layers (Q1at) (Q1bt) having an anterior surface formed by mechanical surface treatment such as shot blasting, sand blasting, and grid blasting. Thus, by increasing the frictional force generated between the joining surfaces of the joining member (P), the slip resistance (resistance force) generated between the joining surfaces is increased.

Corresponding to the presence or absence of minute joint surface gaps (g1) and (g2) due to warping deformation around the high-strength bolt (U1a) of the first and second accessory plates (S1) and (S2) in the above configuration of FIG. Returning to FIG. 3, in the high-strength bolt tightening force effective region (G1) and the high-strength bolt tightening force acting region (H1), the slip resistance (between the joint surfaces of the joint member (P) ( The following is a review of the distribution state of the resistance force).
The high-strength bolt tightening force effective region (G1) in FIG. 3 includes first and second attachments in plan view of the upper and lower washers (V1a) (V1a) from the high-strength bolt (U1a) in FIG. Concentric circular regions (G1) and (G1) separated from each other by a predetermined distance through the projection regions on the plates (S1) and (S2) correspond to each other. Here, the tightening force by the high strength bolt (U1a) is a washer. (V1a) works powerfully, and the effect of the action is sufficiently effective. In the region (G1 (G1), the first and second attachment plates (S1) and (S2) are very small due to warping. As a result, the thickness of the first upper and lower friction sheet materials (Q1a) and (Q1b) in the high-strength bolt tightening force effective region (G1) in FIG. Is selected as a constant uniform high strength bolt tightening force effective area thickness dimension (d1A) (d1B). It has been, slip proof (resistance force) acting between the junction surfaces of the joining member (P) is maintained in the maximum uniform value.

On the other hand, the high strength bolt tightening force acting region (H1) in FIG. 3 is separated from the high strength bolt (U1a) in FIG. 4 by the concentric regions (G1) and (G1) in the drawing. The concentric annular regions (H1) and (H1) appearing on the outside correspond to each other. Here, the tightening force by the high-strength bolt (U1a) is the sliding resistance in the concentric regions (G1) and (G1). When converted into (resistance force), a minute deformation due to the warping of the first and second accessory plates (S1) and (S2) in the regions (H1) and (H1) due to the reaction of the tightening force. Happens. Reflecting this, the inventors of the present application have demonstrated that the slip resistance (resistance force) acting between the joining surfaces of the joining member (P) in the high-strength bolt tightening force acting region (H1) in FIG. Confirmed.
And about the reduction | decrease of the said slip strength in the high strength bolt fastening force action area | region (H1), under the normal attribute conditions of the said joining member (P), ie, the central axis of a high strength bolt (U1a), The inventor of the present application also empirically confirmed a tendency to decrease with increasing concentric separation distance from the central axis (C1) of the friction sheet material hole (F1).

  On the other hand, in the first embodiment of the present invention of FIG. 5, the first upper friction sheet material (Q1a) and the first lower friction sheet material (Q1b) 4, surface treatment layers (Q1at) (Q1bt) corresponding to the surface treatment layers (Q1at) (Q1bt) are applied, and in FIG. 5, the high strength bolts of the friction sheet materials (Q1a) (Q1b) are provided. Regarding the thickness in the central axis direction of (U1a), the high-strength bolt tightening force of the friction sheet material (Q1a) (Q1b) in FIG. 5 is effective within the high-strength bolt tightening force effective region (G1). The thickness dimension (d1A) (d1B) of the region thickness (including the thickness of the surface treatment layer (Q1at) (Q1bt)) is the friction sheet material (G1) in the high strength bolt fastening force effective region (G1) in FIG. Q1a) (Q1b) constant high strength bolt tightening force available It is equally selected to region thickness (d1A) (d1B) (also the thickness of the surface treatment layer (Q1at) (Q1bt) included). Thus, in the high-strength bolt tightening force effective region (G1), as shown in FIGS. 4 and 5 in common, the first upper friction sheet material (Q1a) is provided on both upper and lower surfaces. Among the first surface treatment layers (Q1at), the upper one is in close contact with and pressed against the lower surface of the first accessory plate (S1), and the lower one is the joint of the base material (L1). A state of being pressed in close contact with the upper surface of the portion (L1b) is ensured. Similarly, symmetrically, among the second surface treatment layers (Q1bt) provided on the upper and lower surfaces of the first lower friction sheet material (Q1b), the lower one is the second accessory plate (S2). ) Is pressed in close contact with the upper surface, and the upper member is pressed in close contact with the lower surface of the joint (L1b) of the base material (L1).

On the other hand, in the high-strength bolt action region (H1) of the configuration of FIG. 5 which is the first embodiment of the present invention, the high-strength bolt tightening force action of the friction sheet material (Q1a) (Q1b) in the figure. Regarding the thickness dimension (d1C) (d1D) of the region thickness, the dimension of the bonding surface gap (g1) (g2) in FIG. 5 with respect to the constant uniform effective region thickness dimension (d1A) (d1B) in FIG. The thickness dimension (d1C) (d1D) of the plate deformation compensation value is a value obtained by adding the dimension (Δd1C) (Δd1D) of the thickness increment for compensating the deformation of the plate, which is not excessive or insufficient to make up the gap. It is selected as.
As a result, in the configuration of FIG. 5, even in the high-strength bolt action region (H1), the increase in thickness for compensating the deformation of the plate is equivalent to the dimension (Δd1C) (Δd1D). Since (g1) and (g2) can be compensated for, the first upper friction sheet material (Q1a) is not accompanied by the generation of the joint surface gaps (g1) and (g2) as in the configuration of FIG. The first surface treatment layers (Q1at) and (Q1at) on both the upper and lower sides are in close contact with and pressed against the lower surface of the first accessory plate (S1) and the upper surface of the joint (L1b), respectively. Is secured. Similarly, symmetrically, the second surface treatment layers (Q1bt) (Q1bt) on both upper and lower sides of the first lower friction sheet material (Q1b) are respectively connected to the upper surface of the second accessory plate (S2). A state of being pressed in close contact with the lower surface of the joint (L1b) is ensured.

  Further, in the normal configuration shown in FIG. 5, in the high-strength bolt action region (H1), the joint surface gap is larger than the high-strength bolt tightening force effective region thickness dimension (d1A) (d1B). (G1) With respect to the thickness dimension (d1C) (d1D) of the plate deformation compensation value obtained by adding the dimension (Δd1C) (Δd1D) of the thickness increment for plate deformation compensation to make up for (g2), the high strength bolt It is preferable to select the variable added plate deformation compensation value that shows an increasing tendency as the distance away from the central axis (C1) of (U1a) increases concentrically. Accordingly, in the high-strength bolt action region (H1), the joint surface gap (g1) (g2) in FIG. 4 showing an increasing tendency corresponding to a concentric separation distance from the central axis (C1). ) Is accurately compensated for, it is possible to ensure a complete adhesion / pressing state between the joining surfaces of the joining members (P) of the first and second surface treatment layers (Q1at) (Q1bt). It is possible to reliably prevent a reduction in frictional force generated between the surfaces and, in turn, a decrease in slip strength (resistance force) at the joint surface.

  In the configuration of FIG. 5 which is the first embodiment of the present invention, a first value having a dimension of the above-mentioned variable attachment plate deformation compensation value in the high-strength bolt tightening force acting region (H1). In order to realize the upper and lower friction sheet materials (Q1a) (Q1b), the thickness dimension of the first and second surface treatment layers (Q1at) (Q1bt) covering the upper and lower surfaces of the friction sheet material is set to a minute constant value. In this state, the first friction sheet material (Q1a) itself and the first lower friction sheet material (Q1b) itself are dealt with by changing the thickness dimension.

In addition, in the configuration of FIG. 5 which is the first embodiment, the change in the thickness dimension of the first upper friction sheet material (Q1a) is the thickness of the friction sheet material (Q1a) itself. Center line (C5), more precisely, from the center line (C5) passing through the midpoint of the effective area thickness dimension (d1A) in the high-strength bolt effective area (G1), the first accessory plate ( To the lower surface of S1), it is secured in a form that bulges upward on one side in the figure.
Similarly, symmetrically, the thickness of the first lower friction sheet material (Q1b) changes from the center line (C6) of the thickness of the friction sheet material (Q1a) itself to the second accessory plate (S2). ) Is secured in a form that bulges downward on one side in the figure.

  In the high-strength bolt inactive region (I1) appearing at the left and right end portions of the configuration of FIGS. 4 to 5, between the joining surfaces of the joining members (P) (P1), that is, the friction sheet material (Q1a) ( Since the tightening force by the high strength bolt (U1a) does not reach between the upper and lower surfaces of Q2b) and the surface of the accessory plate (S1) (S2) or the surface of the joint (L1b) of the base material (L1). The presence or absence of the friction sheet material itself is left to design choice. In the configuration in FIG. 5, the thickness dimension of the friction sheet material (Q1a) (Q1b) is within the high strength bolt tightening force acting region (G1) in the high strength bolt tightening force inactive region (I1). In the shape of the high strength bolt tightening force non-operating region (I1), the shape is maintained at a constant level while maintaining the maximum value of the deformation compensation value of the variable stencil plate reached at both left and right ends in the figure. As shown in FIG. 3, a high-strength bolt tightening force inactive region (I1) having a rectangular outer periphery in plan view is formed.

  In FIG. 5 showing the operating state of the joining member (P1) of the first embodiment according to the present invention, the periphery of one high-strength bolt (U1a) is extracted and drawn. As shown in FIG. 2, the cooperative operation state around the two high-strength bolts (U1a) and (U1b) is an analytical model of a mechanically minimum unit, and these two high-strength bolts (U1a) FIG. 6 is an expanded representation of the operation state of FIG. 5 with respect to (U1b). A high-strength bolt tightening force acting region (H1) around a high-strength bolt (U1a) having a central axis (C1) appearing in FIG. 3 and a high-strength bolt (U1b) adjacent to the bolt (U1a). The operating state of the high-strength bolt tightening force non-operation region (I2) interposed between the high-strength bolt tightening force acting region (H2) appears in the center of FIG. In the high strength bolt tightening force inactive region (I2) in FIG. 6, the first upper and lower friction sheet materials (Q1a) and (Q1b) are within the high strength bolt tightening force acting region (H1). While maintaining the maximum thickness dimension (d1C) (d1D) of the splicing plate deformation compensation value, it adheres closely to the upper and lower surfaces of the joint (L1b) of the first base material (L1) and extends in a flat plate shape. In the high-strength bolt tightening force inactive region (I2), the first accessory plate (S1) covers the first upper friction sheet material (Q1a) while the first upper friction sheet material is covered. (Q1a) is deformed so as to bulge away from the upper surface, and similarly symmetrically, the second accessory plate (S2) covers the first lower friction sheet material (Q1b) The first lower friction sheet material (Q1b) is deformed so as to bulge in a direction away from the lower surface.

  Based on the explanatory diagram of FIG. 7 corresponding to FIG. 5, the second embodiment will be described as follows. In FIG. 7, the components indicated by the same reference numerals as the components indicating the components in FIG. 5 are the same. In the configuration of FIG. 5, there is a change in the thickness dimension of the variable compensation plate deformation compensation value of the first upper friction sheet material (Q1a) in the high-strength bolt tightening force action region (H1). The friction sheet material (Q1a) is secured in a form that bulges upward from the center line (C5) of the friction sheet material (Q1a) itself toward the lower surface of the first accessory plate (S1). On the other hand, in the configuration of FIG. 7, the change in the thickness dimension of the variable compensation plate deformation compensation value of the first upper friction sheet material (Q1a) is the thickness of the friction sheet material (Q1a) itself. Bulges from the center line (C5) to both the upper and lower sides in the figure toward both the lower surface of the first accessory plate (S1) and the upper surface of the joint portion (L1b) of the first base material. Is secured in the form of Similarly, in the configuration of FIG. 7, the change in the thickness dimension of the variable compensation plate deformation compensation value of the first lower friction sheet material (Q1b) is the friction sheet material (Q1a). From the center line (C6) of its thickness toward both the upper surface of the second accessory plate (S2) and the lower surface of the joint portion (L1b) of the first base material, it swells up and down in the figure. It is ensured in the form of taking out.

FIG. 8 is a partially enlarged view showing a portion of the thickness dimension of the variable added plate deformation compensation value in the high strength bolt tightening force acting region (H1). In FIG. 8, regarding the high-strength bolt tightening action region thickness dimension (d1C) of the first upper friction sheet material (Q1a) in the high-strength bolt tightening force action region (H1) at the left end in the figure. Is on the upper and lower sides of the friction sheet material as it goes to the right (or left) of the drawing, that is, concentrically from the central axis (C1) of the high-strength bolt (U1a). The variable splicing plate deformation compensation value which shows an increasing tendency as the distance of separation increases increases, but the constant high-force bolt tightening appearing in the high-strength bolt tightening force effective region (G1). The increase with respect to the effective force area thickness dimension (d1A), that is, the thickness increase (Δd1C) for compensating the deformation of the attached plate is the center line of the friction sheet material (Q1a) in the upper tightening force action area (H1). In contrast to (C5), half the amount (1 / 2Δd) Appear to be distributed to each C). In the high-strength bolt tightening force inactive region (I1) appearing at both left and right ends in the figure, the high-strength bolt tightening region thickness dimension (d1C) is also equal to the thickness increase for the deformation of the accessory plate deformation. The point that the half amount (1 / 2Δd1C) of (Δd1C) is also maintained at a constant and uniform maximum value is the same as in the case of the first embodiment shown in FIG.
In the embodiment here, the first surface treatment layer (Q1at) covering the upper and lower surfaces of the first upper friction sheet material (Q1a) is formed with a uniform thickness. And constitutes a part of the thickness dimension (d1C) of the high strength bolt tightening force acting region. Needless to say, all of the above description in this paragraph also holds true for the first lower friction sheet material (Q1b) appearing symmetrically in FIG.

  FIG. 9 corresponding to FIG. 5 shows the configuration of the third embodiment of the present invention, and the components indicated by the same reference numerals as those shown in FIG. Are the same. In FIG. 9, the high strength bolt tightening action region thickness dimensions (d1C) (d1D) of the friction sheet materials (Q1a) and (Q1b) on the first upper and lower sides in the high strength bolt tightening force action region (H1) are as follows. The first surface treatment layer (Q1at) covering the upper surface of the first upper friction sheet material (Q1a) with respect to the high-strength bolt fastening effective region thickness dimension (d1A) (d1B) For the above-mentioned plate deformation compensation of the second surface treatment layer (Q1bt) covering the lower surface of the first lower friction sheet material (Q1b) and the dimension (Δd1C) of the thickness increase for the plate deformation compensation of Each of the first and second surface treatment layers (Q1at) (Q1bt) on one side is separately provided so that the thickness dimension of each additional plate deformation compensation value obtained by adding the dimension of thickness increment (Δd1D) is obtained. The thickness is adjusted. Accordingly, the first upper and lower friction sheet materials (Q1a) (excluding the surface treatment layers (Q1a) and (Q1b)) of the high-strength bolt tightening region thickness dimension (d1C) (d1D) ( The net thickness of Q1b) itself is always maintained at the high-strength bolt tightening effective area thickness dimension (d1A) (d1B).

In this case, for example, in the drawing of the first upper friction sheet material (Q1a) in the high-strength bolt tightening force action region (H1), the thickness dimension of the upper first surface treatment layer (Q1at) This is to secure a dimension (Δd1C) of the thickness increment for compensating the deformation of the accessory plate that changes so as to increase as the distance away from the central axis (C1) of the high-strength bolt (U1a) increases concentrically. However, the change in the thickness dimension of the surface treatment layer (Q1at) here is that the thermal spraying condition for each thermal spraying position is determined when a rigid metal particle layer is formed on the surface of the friction sheet material by a known thermal spraying technique. This is realized by the method of controlling The known thermal spraying techniques mentioned here include, in addition to plasma spraying, hot wire flame spraying, powder flame spraying, wire spraying, and the like. In particular, the atmospheric pressure plasma spraying of the plasma spraying is advantageous for application at the work site for joining structural members such as steel structures.

  FIG. 10 corresponding to FIG. 7 shows the configuration of the fourth embodiment of the present invention. The components indicated by the same reference numerals as those shown in FIG. Are the same. In FIG. 10, regarding the high strength bolt tightening action area thickness dimension (d1C) (d1D) of the friction sheet material (Q1a) (Q1b) on the first upper and lower sides in the high strength bolt tightening action action area (H1). Is a first surface treatment layer covering the upper and lower surfaces of the first upper friction sheet material (Q1a) with respect to the high-strength bolt fastening effective area thickness dimension (d1A) (d1B) ( Q1at) half the amount (1 / 2Δd1C) symmetrically distributed on both upper and lower surfaces of the thickness increment dimension (Δd1C) for compensating the deformation of the attached plate and both upper and lower surfaces of the first lower friction sheet material (Q1b) A value obtained by adding a half amount (1 / 2Δd1D) symmetrically distributed to both the upper and lower surfaces of the thickness increment (Δd1D) of the above-mentioned plate deformation compensation thickness of the second surface treatment layer (Q1bt) covering The thickness dimension of another plate deformation compensation value and To so that, in which the first of the upper and lower sides, the thickness of the second surface treatment layer (Q1at) (Q1bt) are adjusted respectively. The adjustment of the thickness here is performed by the same spraying technique as in the case of the configuration of the third embodiment in FIG.

  As described above, the joined structure of a structural material such as a steel frame using a high-strength bolt according to the present invention is useful for reliably and efficiently forming a framework of a structural material such as a steel frame for construction at a construction site. So it has enough industrial applicability.

These are perspective views which show the high strength bolt friction junction structure of the building structure which is a premise structure of embodiment of this invention. These are AA arrow sectional drawing in FIG. These are BB arrow sectional drawing in FIG. These are sectional drawings which extract and show a conventional joining member. These are sectional drawings which extract and show the joining member which is the 1st embodiment of the present invention. FIG. 6 is an explanatory diagram expressing the operating state of the configuration of FIG. 5 in an expanded manner. These are sectional drawings which extract and show the junction which is the 2nd embodiment of the present invention. These are the expanded sectional views which extract and show the high strength bolt clamping force action area | region of the junction part which is the 2nd Embodiment of this invention. These are sectional drawings which extract and show the junction which is the 3rd embodiment of the present invention. These are sectional drawings which extract and show the junction which is the 4th embodiment of the present invention.

U1a, U1b, U2a, U2b High-strength bolt L1 First base material L2 Second base material L1b First base material joint L2b Second base material joint S1 First accessory plate S2 Second Fitting plate Q1a First upper friction sheet material Q1b First lower friction sheet material P Joining member G1 High strength bolt tightening force effective region H1 High strength bolt tightening force action region I1 High strength bolt tightening force not Action area Q1a First upper friction sheet material Q1b First lower friction sheet material Q1at First surface treatment layer Q1bt Second surface treatment layer d1A, d1B High strength bolt fastening force effective area thickness dimension d1C, d1D High strength bolt tightening force action area thickness dimension
(Thickness dimension of accessory deformation compensation value)
Δd1C, Δd1D Dimension of thickness increment for compensating for deformation of the attachment plate Δd1C, Δd1D Dimension of thickness increase for compensation of the attachment plate deformation

Claims (6)

A first base material having a quadrilateral end face extending in a longitudinal direction and appearing in a cut surface perpendicular to the longitudinal direction;
A quadrilateral end face extending in the longitudinal direction and appearing in a cross-section perpendicular to the longitudinal direction, having an end face that is in contact with the end face of the first base material in alignment with or facing through a gap A second base material;
The end surface of the first base material and the end surface of the second base material are in contact with each other in alignment, or a pair of outsides extending in parallel and facing each other at the base material joints facing each other through a gap. A pair of accessory plates extending in a longitudinal direction across the first and second base materials so as to sandwich the surface;
High strength drilled through the base material joint and the pair of accessory plates in a direction perpendicular to the longitudinal direction of the base material joint so as to pass through the base material joint and the accessory plate pair in a consistent manner Bolt holes,
A high-strength bolt metal fitting that is inserted through the hole for the high-strength bolt and fastens the pair of accessory plates to the pair of outer surfaces of the base material joint portion;
Among the pair of accessory plates, a friction sheet material interposed in close contact between one outer surface of the base material joint and the inner surface of one accessory plate facing the outer surface,
The friction sheet material is provided with a friction sheet material hole that is aligned with the hole for the high strength bolt and allows the high strength bolt fitting to pass therethrough. In each high-strength bolt tightening force effective region spreading concentrically on the friction sheet material from the central axis of each of the friction sheet material holes, a constant uniform effective region thickness is selected. In each high-strength bolt tightening force acting region that further extends concentrically outside the range of each high-strength bolt tightening force effective region, the thickness of the effective region is added to the thickness of the plate deformation compensation. A joining structure of a structural material such as a steel frame using high-strength bolts, which is selected as a deformation compensation value. The veneer deformation compensation value is selected as a variable veneer deformation compensation value that tends to increase according to the distance from the center axis of the friction sheet material hole in the high-force bolt tightening force action region. A joining structure of a structural material such as a steel frame using the high-strength bolt according to claim 1. Outside the range of each high-strength bolt tightening force acting region, within each high-strength bolt tightening force inactive region further spreading concentrically on the friction sheet material from the central axis of each friction sheet material hole. 3. The high strength according to claim 2, wherein the splicing plate deformation compensation value is selected to be constant and uniform equal to the maximum value of the variable splicing plate deformation compensation value within the high-strength bolt tightening force acting region. Bonding structure of structural materials such as steel frames with bolts. The variable added plate deformation compensation value of the thickness dimension of the friction sheet material in the central axis direction of the friction sheet material hole is determined from the center of the thickness dimension of the rigid member as the friction sheet material. 3. A structural material such as a steel frame using a high-strength bolt according to claim 2, defined by one or both of a thickness dimension to a surface facing one accessory plate and a thickness dimension from the center to the surface facing the base material. Bonding structure. A friction surface is formed by forming a rough surface on one or both of a surface facing one of the plate pairs of the member having rigidity as the friction sheet material and a surface facing the base material. The joint structure of a structural material such as a steel frame using a high-strength bolt according to claim 4, further comprising a friction-enhancing surface treatment layer that increases the friction. The variable faced plate deformation compensation value of the thickness dimension of the friction sheet material in the direction of the central axis of the friction sheet material hole is a surface facing one plate of the plate pair of the friction sheet material and the base material The joined structure of a structural material such as a steel frame using a high-strength bolt according to claim 2, which is defined by the thickness dimension of a rigid metal particle layer formed by thermal spraying on one or both surfaces facing each other.