CN102209817A - Column-beam connection structure - Google Patents

Column-beam connection structure Download PDF

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Publication number
CN102209817A
CN102209817A CN2009801446445A CN200980144644A CN102209817A CN 102209817 A CN102209817 A CN 102209817A CN 2009801446445 A CN2009801446445 A CN 2009801446445A CN 200980144644 A CN200980144644 A CN 200980144644A CN 102209817 A CN102209817 A CN 102209817A
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China
Prior art keywords
flange
backing plate
steel
post
plate
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CN2009801446445A
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Chinese (zh)
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CN102209817B (en
Inventor
内田昌克
岩乡俊二
岩乡速雄
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Arcreate KK
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Arcreate KK
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2415—Brackets, gussets, joining plates
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2445—Load-supporting elements with reinforcement at the connection point other than the connector
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2448—Connections between open section profiles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2454—Connections between open and closed section profiles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2457—Beam to beam connections

Abstract

Bending moment applied to a beam causes out-of-plane deformation to a panel when the panel zone is hollow, and thereby a load bearing by a web cannot be expected in an elastic region. Since the section modulus of a beam end is limited to the section modulus of only the flange not including the web, the beam end has a low strength. Therefore, a beam larger in size which bears bending moment on the entire section of the beam must be used and an extra beam depth is required, thus causing an increase in the weight of a steel beam. As the result of various studies, it has been found that various problems could be resolved by increasing the plate thickness of a diaphragm, applying a backing plate to the top surface or the bottom surface of a beam flange, increasing the strength of the material of the beam flange, increasing the thickness of the diaphragm or the backing plate, notching a web, or hot working the bottom surface of the beam to impart prestress thereto.

Description

Post beam junction surface structure
Technical field
The present invention relates to post beam junction surface structure, this post beam junction surface structure is in the reinforcing bar works, to can not or be not enough to share the soffit of girder that is applied to the moment of flexure on the beam owing to the cavity in plate district or arc notch, and remedy and strengthen beam end with the reinforcement of beam end flange, thereby reduce depth of beam.
Background technology
The post beam junction surface structure of building iron bone structure thing is under the situation that runs through the dividing plate form of using rectangular section column, as shown in Figure 1, dividing plate 1 by post 5, beam 4, plate 2 and perforation post 5 and plate 2 constitutes, and beam flange 4F welding 7 is on the dividing plate of giving prominence to from post 51, and the soffit of girder 3 welding 3W are on plate 2.Also there is following form in this dividing plate, that is, be not to use post to connect, and be to use the internal partition form of the dividing plate of interpolation in post.In this case, the beam flange 4F and the soffit of girder 3 all are welded on the plate 2.As shown in Figure 2, the cross section at the post beam junction surface under the situation that runs through the dividing plate form is typically provided with arc notch 11, so that the installation sealing wire 7 of the sealing wire 6 of plate 2, dividing plate 1, beam flange, dividing plate does not intersect.In addition, usually for whole welding, backing plate 10 is installed by erection welding 8.In addition, as shown in Figure 3,, also there is the form of coming welded post beam junction surface without arc notch as no arc notch method.In addition, as shown in Figure 4, also there is following method: with no arc notch method dividing plate 1 is not protruded in the outside of post but terminate in the outside of post, and at the engaged at end beam flange of this dividing plate.
In addition, as described in patent documentation 1, there is following method: dividing plate is made the through dividing plate mode that runs through of post, remove dividing plate outstanding from post, with the welding stack of the welding of dividing plate and post and dividing plate and beam flange and make becoming one of weld part.
In addition, as described in patent documentation 2, proposed to use the application of the welded joint structure of the post of cover plate of backing plate dual-purpose and beam.The butt welding junction surface that has arc notch of these patent documentation 2 coupled columns and beam flange is strengthened.Its structure is: fix with the splicing of this cover plate and beam flange and with fillet welding, in the end of the reinforced concrete column side of cover plate groove is set, by butt welding around the beam flange, securing cover plate on the side plate of reinforced concrete column.
The prior art document
Patent documentation
Patent documentation 1: the spy opens the 2005-264709 communique
Patent documentation 2: the spy opens the 2000-110237 communique
Problem to be solved by this invention
As shown in Figure 4, in existing job practices, under the situation of utilizing plate 2 brace summer moment M, the moment 13 of beam end is along with separating from the neutral position of beam 4 and become big, and becomes maximum at the beam lugs position, but is under the situation of cavity at plate district 2Z, with regard to the moment of flexure that relates to beam, the outer distortion 12 of plate 2 generating planes diminishes in soffit of girder position in elastic range, can not expect bearing of moment of flexure 13N.In addition, as shown in figure 11, under the situation of plate district 2Z and soffit of girder bolted joints, the moment of flexure that relates to beam can not expect that the soffit of girder bears.For this reason, only be the section modulus of flange because the section modulus of beam-ends becomes except the soffit of girder, so beam-ends is lower than its central portion intensity, therefore, to use than the beam of bearing the also big size of moment of flexure with the whole cross section of beam, reinforcing bar weight increases.
Be used to prevent the backing plate that burns that welds from then between backing plate and beam flange and backing plate and dividing plate, producing the gap if exist, stress take place concentrate, to cause the reduction of intensity, and hinder the ultrasonic test of carrying out from the back side.Repairing welding between beam, the dividing plate can be used the method for cover plate being installed in H shape girder steel outside, this method is used for existing at beam flange and dividing plate the reinforcement of the welding point under the staggered situation, and with regard to the moment of flexure that relates to beam, the outer distortion 12 of plate 2 generation faces can not expect that at elastic range the soffit of girder bears.In addition, make the ultrasonic testing/ ultrasonic examination inspection of body pillar flange become difficult.
If use with beam bracket and the incorporate no carriage method of central beam, in the post side backing plate is installed in advance, then the span as the distance between the post is kept under the state of certain value according to plan, the soffit of girder become hinder and can not be on post mounting rail.
Make this part and soffit of girder welding if just make the dividing plate thickness of slab become big, then have only soffit of girder thickness partly to play moment of flexure and bear effect.In this case, increase, the effect of dividing plate thickening is reduced by its weight.
In addition, in patent documentation 1, remove dividing plate outstanding from post, alleviate its stress and concentrate, and remove arc notch, alleviate its stress and concentrate.But with regard to the moment of flexure that relates to beam, the outer distortion 12 of plate 2 generating planes can not expect that at elastic range the soffit of girder bears.
In addition, in patent documentation 2, be used for the reinforcement of the welding point under the situation of the welded joint arc notch that has beam flange and dividing plate, and with regard to the moment of flexure that relates to beam, the outer distortion 12 of plate 2 generation faces can not expect that at elastic range the soffit of girder bears.In patent documentation 2, use the cover plate of backing plate dual-purpose, in order to hold a concurrent post both, have the slit that is used to sandwich the soffit of girder in central authorities, the shape of cover plate complicates and takes time and energy in processing.
In addition, in patent documentation 2, it is the butt welding of part through welding or complete penetration that the post face down bonding of beam flange connects, in the welding of part through welding, cause that owing to the stress of non-melt-coating part is concentrated the intensity of welding point reduces, in the butt welding of complete penetration, carry out back chipping with channeling, there are channeling, groove, the welding of filling out this groove, increasing and big welding deformation when being attended by the Welder by the channeling generation.
In addition, in patent documentation 2, owing to the cover plate of installing with beam flange splicing not in the face of dividing plate on the extended line, so the axial power of beam that cover plate is applied is not by membrane support.Thereby because dividing plate can only be born the part of beam flange, therefore with regard to the moment of flexure that relates to beam, the plate at post beam junction surface produces the outer distortion 12 of face shown in Figure 4, can not expect that at elastic range the soffit of girder bears.
In addition, in patent documentation 2, the several times that the axial length of the beam of the cover plate of double as backing plate is made the axial length of beam of existing backing plate are 100～150mm.With respect to the non-influence of bearing of the moment of flexure of the plate of soffit of girder end, reach the short transverse that is defined as the soffit of girder width soffit of girder height about 1/2, and also lower than the value in the whole cross section of original beam in the section modulus and the cross section moments of inertia of this scope crackle soffit of girder.Thereby the several times of the axial length of beam that in the axial length of beam of the cover plate of double as backing plate are existing backing plate are promptly under the situation of 100～150mm, and soffit of girder height is to be inadequate more than the 300mm.
In addition, in patent documentation 2, the flange side engagement portion of cover plate is fillet welding, because the axial power maximum of beam can only expect that throat depth is 1/ √ 3 of cover plate thickness of slab, so joint efficiency is poor.
In addition, in patent documentation 2, because the splicing of cover plate and beam flange, so between cover plate and beam flange, do not have the gap, the post face down bonding of cover plate connect and the fillet welding of beam flange side in be difficult for through welding, and poor in the drainage of root weld gas, weld defect appears easily.
Summary of the invention
The present invention makes in view of above situation, and its purpose is, in the structure of the post beam junction surface of reinforcing bar works, improves the intensity of beam end, reduces depth of beam, reduces reinforcing bar weight.
Be used to solve the method for problem
This each problem in the result who carries out various researchs as can be known, can solve by following: the thickness of slab of dividing plate is increased to soffit of girder side, and in factory's welding, to the beam flange inner is that soffit of girder side is provided with the steel backing plate or improves the strength of materials, or the thickness of slab of raising beam flange and steel backing plate, or soffit of girder central authorities are provided with otch, or below beam, carry out hot line processing and give predeformation, or welding bead built-up welding etc. is set.
Promptly, by in factory welding on the additional steel backing plate of underbeam flange inner, at the scene in the welding, the upper beam flange inner is close to this steel backing plate, the beam flange outer sides is close to this steel backing plate, and a side of this steel backing plate of butt welding on dividing plate engages the opposing party at beam center side flange with the welding of groove, bear increase by the moment of flexure that increases the flange that effect causes by the thickness of slab of beam flange, replace the moment of flexure of the soffit of girder to bear.Thus, the yield strength of beam-ends is improved, the cross section moments of inertia of beam and section modulus are improved, make necessary beam section reduction, make reductions such as depth of beam, the weight of building reinforcing bar etc. is reduced.In addition, at the so-called depth of beam of this explanation, be meant the height to upper flange below the lower flange of H shape girder steel.
The described the present invention of claim 1, remove dividing plate shown in Figure 2 outstanding 1A from post, and the thickness of slab of dividing plate is increased, the weld part of the weld part of post and dividing plate and beam flange and dividing plate is overlapping and engage, and in factory's welding, make than adding that at the beam flange thickness of slab of the thickness of slab of steel plate backing plate also increases this thickening of the dividing plate of (being preferably more than the 5mm) in soffit of girder side, with this backing plate and soffit of girder solder joints, but also process and solder joints by groove with the beam flange at least in the beam center side end of this backing plate.At the scene in the welding, have only the beam flange of downside to add that than in the outside of beam flange (downside) thickness of slab of the thickness of slab of steel plate backing plate increases this thickening of the dividing plate of (being preferably more than the 5mm), with this backing plate and soffit of girder solder joints, and in the beam center side end of this backing plate at least with the beam flange by groove processing solder joints.
Described first structure of the present invention of claim 1, by removing dividing plate shown in Figure 2 outstanding 1A from post, reduce the weight of dividing plate, make the processing of the groove etc. of beam-ends become easy, preventing influences caused embrittlement with respect to the multiple heat of the weld part 7 of dividing plate, makes the beam-ends machining under the situation of the thickness of slab that increases dividing plate become easy.If dividing plate is thickened to soffit of girder side from the ledge of post and the thickness of slab of dividing plate, then add and need carry out the incision of the beam flange and the soffit of girder man-hour at beam-ends, carry out complicated processing thereby force.In order to remove the outstanding 1A of dividing plate from post, need prevent that stratiform that the welding by dividing plate causes from spreading splits, and its Sulfur partly need be reduced to below 0.008%.Preferably its Sulfur partly is reduced to below 0.004%.And, the weld part of the weld part of axis of a cylinder and dividing plate and beam flange and dividing plate is overlapping and engage, and make this thickening and the soffit of girder solder joints of the dividing plate of increase.Otherwise, in order to separate these weld parts heat affected zone each other, separate axis of a cylinder and the weld part of dividing plate and the weld part of beam flange and dividing plate, the thickness of slab of dividing plate 1 is increased, and increase separator.Even this is specially to reduce depth of beam and beam weight is reduced, its effect is reduced.In addition, category of the present invention is: even say and remove the outstanding 1A of dividing plate from post, as in the past, be not outstanding 25～30mm, but consider the making precision of post and maximum projects to about 10mm according to the diameter of post.
Described second structure of the present invention of claim 1 is, in factory's welding, be close to tetragonal steel backing plate in the flange inner up and down of post curb girder end, perhaps, at the scene in the welding, tetragonal steel backing plate is close in inboard at the upper flange of beam-ends, and is close to tetragonal steel backing plate in the outside of the lower flange of beam-ends.This tetragonal steel backing plate need not to cut away the soffit of girder for this backing plate is installed in the beam flange inner, but is divided into the both sides of the soffit of girder and installs.Existing backing plate is for burning of preventing to weld and exist, and in the described the present invention of claim 1, replaces existing backing plate, and the steel backing plate of new ideas of the present invention is applied flexibly as the member of taking on stress by dividing plate, has novelty at this.In addition, in the welding, this backing plate is installed on the downside of upper flange by dividing plate at upper flange part at the scene, is installed on the downside of this lower flange at lower flange, can have novelty in this with downward welding posture construction in the building site.That is,, in the engineering of building site, all the steel backing plate is installed, is had novelty at this at the upside of beam-ends flange welding and the little side of weld width of downside even in factory's welding procedure.
Described the 3rd structure of the present invention of claim 1 is as follows, the thickness of slab of dividing plate is added that than at the beam flange thickness of slab of the thickness of slab of steel plate backing plate also increases (being preferably more than the 5mm) in soffit of girder side, this be because, as the minimum value that in the welding of beam flange 4F and dividing plate, can place the welding welding bead and can need at the permissible value of the installation accuracy of dividing plate 1 loading girder flange 4F.The thickness of slab of this each dividing plate up and down made at beam flange thickness of slab add more than the thickness of slab of thickness of slab of steel plate backing plate, begin to thicken, have novelty at this from the thickness of slab (being preferably more than the 5mm) that adds the thickness of slab of steel plate backing plate at beam flange thickness of slab.In addition, on the direct-connected this point of this dividing plate, has novelty with this steel backing plate and thickening.Among the moment of flexure that the soffit of girder is applied is born part, the soffit of girder length part of the thickness considerable part of the direct coupling part of the dividing plate and the soffit of girder and the column flange that combines with this dividing plate can be born and appended as the moment of flexure of the soffit of girder.
Described the 4th structure of the present invention of claim 1 is, a square tube of this backing plate is crossed groove processing and solder joints in the beam center side of beam flange, and with the opposing party of this backing plate by groove processing solder joints at beam-ends side dividing plate or post.Thus, the thickness of slab that plays the beam flange increases or the effect of the increase of the soffit of girder thickness of slab of the width of flange, bring the yield strength increase of beam flange end or the yield strength of soffit of girder end to increase, can bear with respect to the bearing of the bigger moment of flexure of beam, can correspondingly use the beam of littler height thus.Thus,,, especially carry out the groove welding, have novelty at this in the beam center side of beam flange with length direction beam center side end and the welding of beam flange to length direction beam-ends side and the beam flange end and the welding of dividing plate end of major general's steel backing plate.In addition, under the situation of the internal partition that use thickens, in the face of this internal partition, the beam flange is connected with dividing plate with this backing plate, has novelty at this by column flange thickness.As shown in Figure 2, in the work on hand method, because therefore the thickness of the thickness setting Cheng Yuliang flange correspondence of internal partition install backing plate in the beam flange inner, this can not imagine.The difference of backing plate and steel backing plate is, backing plate on the beam length direction with its two ends of the size about width 25mm in the partly erection welding of beam width direction, with respect to this, the steel backing plate has the long size more than about 1/8～1/2 of soffit of girder height or depth of beam in the beam length direction, and the both ends of the length direction of steel backing plate are in the scope of the full duration solder joints with groove.And on function, the purpose of backing plate is to prevent burning of beam welding etc., and the purpose of steel backing plate is the moment of flexure of bearing as the replacement of the moment of flexure that is applied to the soffit of girder.In addition, backing plate generally is to be closely attached on member, and the characteristics of steel backing plate be for make the discharging good, that make welding gas of welding through welding good, prevent from weld defect to separate about 0.5～3mm from member.In addition, as Figure 23～shown in Figure 28, the shape of steel backing plate can adopt the shape freely of the above polygon of quadrangle etc.In addition, in the present invention, can a side or the both sides of the side of steel backing plate be welded in the scope of a part or total length.If like this side is welded, then can effectively prevent buckling of steel backing plate.
The width of tetragonal steel backing plate and thickness are not fixed in beam width, can increase the yield strength of beam-ends arbitrarily.In addition, the center side of the beam flange of steel backing plate is carried out groove processing in this backing plate end, adds fillet welding in the butt welding of the throat depth of the thickness of slab part of guaranteeing this backing plate.
First structure is known, by with second, third and the 4th textural association, append following new function: according to the first and the 3rd structure, tetragonal steel plate system backing plate is installed easily.This tetragonal steel plate system backing plate easy-on reason is, if dividing plate is not outstanding from post, then cylinder flattens and installs easily.Existence is provided with vertical rib and makes the soffit of girder bear the method for moment of flexure the soffit of girder position in the plate district, because that this method will be indulged the rib solder joints will be extremely difficult technically in the inside, plate district of sealing, therefore unrealistic.
In the described the present invention of claim 2, on the described post of claim 1, use H shape steel to replace rectangular steel tube or round steel pipe, other structure is identical with claim 1.In the present invention, in H shape steel column, be steel backing plate and applying flexibly as the member that meets with stresses also with existing backing plate, have novelty at this.
The described structure of the present invention of claim 3 is on the basis of claim 1 or 2 described structures of the present invention, it is characterized in that: to the beam of the invention of claim 1 or 2 in abutting connection with and the beam of littler height carry out haunch and handle, make the depth of beam unanimity of beam end at the post beam junction surface in same plate district.By carrying out that haunch is handled and depth of beam increases, at the downside of the dividing plate of the lower flange that big depth of beam is installed, the lower flange of the beam that the mounting rail height is little.If be installed on the dividing plate downside of the lower flange of big depth of beam, then, can expect that the moment of flexure of the soffit of girder is born according to the increase of depth of beam and the slab effect of dividing plate that the lower flange of big depth of beam is installed.In addition, need little beam be installed,, then can be installed on the position arbitrarily of dividing plate and the downside of this dividing plate not necessarily if the moment of bearing with the end of little beam serve as sufficient value at the lower flange of big depth of beam.
On the basis of the described structure of the present invention of claim 4 any one described structure of the present invention in claim 1 to 3, it is characterized in that:, use than beam central portion allowable stress intensity height or the big beam flange of thickness of slab flange or this backing plate or its both sides of beam-ends.If tetragonal steel plate system backing plate is installed beam flange thickness of slab is increased in the beam flange inner, and on beam bracket, use the also high material of allowable stress strength ratio beam central portion, then can concentrate with respect to the stress of beam flange and make saferly, can increase yield strength with thinner thin plate.In addition, if the high steel plate system backing plate of tetragonal allowable stress intensity is installed in the beam flange inner or the outside, then can with thinner thin plate with respect to the stress of beam flange concentrated make safer.In addition, by the big beam flange of direct use thickness of slab, can further increase the yield strength of beam-ends flange.Under the situation of using the steel backing plate, for the position of the part of beam-ends,, realize the raising of yield strength by improving the strength of materials and increasing beam flange thickness of slab, have novelty at this.
On the basis of the described structure of the present invention of claim 5 any one described structure of the present invention in claim 1 to 4, it is characterized in that: by on the beam length central portion or below solder joints band steel, riser or shaped steel, or to carrying out hot line processing below the beam length central portion and making beam distortion upward in advance, or additional welding welding bead and make beam distortion upward in advance, thereby suppress deflection of beam.
On the basis of the described structure of the present invention of claim 6 any one described structure of the present invention in claim 1 to 5, it is characterized in that: between beam flange and tetragonal steel backing plate, reserve the gap about 0.5～2mm.Thus, the welding through welding of steel backing plate is become well, make welding gas become good and can prevent weld defect from the discharging of welding root.
On the basis of the described structure of the present invention of claim 7 any one described structure of the present invention in claim 1 to 6, it is characterized in that: weld from the opposition side of the beam flange that applied bevel for welding, make the welding welding bead be exposed to the groove side, and back chipping and carry out the welding of groove side not, beam flange and the dividing plate end or the post outside of welding splicing tpae steel backing plate with complete penetration.Thus, if the horizontal positioned post vertically erects the beam flange and welds, then do not need backing plate and run-on tab.
On the basis of the described structure of the present invention of claim 8 any one described structure of the present invention in claim 1 to 7, it is characterized in that: at the post inner face backing plate of reserving the gap of 0.5～4mm with the post inner face is installed, and with the narrow groove of welding root gap 0～4mm come solder joints not from post outstanding run through dividing plate and this column end.
On the basis of the described structure of the present invention of claim 9 any one described structure of the present invention in claim 1 to 8, it is characterized in that: the backing plate of reserving the gap of 0.5～4mm with the post inner face is installed at the post inner face, and be that physical member forms post beam junction surface board with solid steel, come this solid member of solder joints and this column end with the narrow groove of welding root gap 0～4mm.In structure of the present invention, the moment of flexure of the soffit of girder that causes owing to the board that uses entity is born to bear to add with the moment of flexure of the steel backing plate that is installed on the beam flange and is in the same place, and the yield strength of beam can further improve, and has novelty at this.
The effect of invention
According to claim 1 and 2 described inventions, have following effect and easy, promptly have: the thickness of slab of (1) dividing plate increases effect; (2) remove the outstanding effect of dividing plate from post; (3) effect of overlapping weld part; (4) make the effect of post and soffit of girder solder joints; (5) effect of tetragonal steel backing plate being installed in beam flange inner or the outside; (6) the length direction end of solder joints steel backing plate, its beam end side directly be connected with dividing plate or in the face of dividing plate by post thickness and in face with the post solder joints; (7) the steel backing plate can be to install identical sensation and installation time with existing backing plate.According to the synergy of these effects, it is very big that the moment of flexure of beam-ends is born the effect performance.Especially effective to following situation: as even the beam-ends soffit of girder is welded,, to be that the face of epidermis plate is out of shape outward then, can not to make the beam-ends soffit of girder bear the situation of moment of flexure by column flange if post inside is cavity.
Only in above-mentioned effect (1), the unfavorable factor that only exists weight to increase is still closed as if hardening with tetragonal metal mat, then has the effect of transmission from the stress of beam flange.In (2), has the effect that effect that the weight that suppresses dividing plate increases and the handling ease that makes beam-ends are carried out, if under the dividing plate state outstanding, the thickness of slab of dividing plate is thickened to soffit of girder side from post, then need to carry out the incision of the beam flange and the soffit of girder, force and carry out complicated processing.In (3), have the weight effect that increases and the overlapping embrittlement that causes that prevents by the heat affecting of dividing plate that suppress dividing plate, in (6), the synergy according to the effect of this thickening that makes dividing plate and soffit of girder solder joints plays moment of flexure and bears effect in (4).Thus, can replace the Stress Transfer that will apply the soffit of girder effect to the post.
If only make dividing plate thickening and make this part and soffit of girder solder joints, then have only soffit of girder thickness portion with the direct solder joints of dividing plate to play moment of flexure and bear effect.In this case, owing to increasing, its weight make the moment that causes by the dividing plate thickening bear the effect reduction.If by in the beam flange inner tetragonal steel plate being installed, the effect that increases according to beam flange thickness of slab thickens dividing plate, then play the effect that increases soffit of girder thickness of slab at the dividing plate thickening.Thereby dividing plate thickens effectively and works.That is, the effect of claim 1 is: also the bigger moment of flexure that sill bolt come is surpassed independent dividing plate thickness of slab and increase the effect of effect, independent soffit of girder welding effect and independent tetragonal steel backing plate is born effect.In other words, because various structure bear with the beam moment of flexure that can only bring a little separately.According to these effects, can make the weight of building reinforcing bar integral body reduce by 5～15%, for example,, then can reduce the weight about 100 tons if build 10000 square metres of total floor spaces, 1000 tons of reinforcing bar weight.As if the about 7,000,000 tons demand of Japanese national annual output of the building size of considering the house and building reinforcing bar, then can judge this weight reduction and can access extremely big effect.
In claim 1 and 2 described inventions, with regard to the beam flange with regard to the installation of post, in claim 7, make post maintenance level and beam flange and post are vertically erected and carry out level welding, or the beam flange flatly is close on the post and is erect welding, do not have existing backing plate and do not have the both sides welding of channeling.This operation is that cylinder flattens and easy mounting rail for outstanding from post by dividing plate.
According to claim 1 and 2 described inventions, has following effect.That is, have width, the thickness of tetragonal steel plate system backing plate, the degree of freedom of length, in addition, the shape of the beam of this backing plate central authorities side is not subjected to the influence of the soffit of girder and increases degree of freedom.Can improve the intensity of beam central portion or the control that improves the intensity of beam-ends side.If make the width of steel backing plate also bigger than beam width, the stress that then can alleviate the flange end of beam-ends is concentrated biglyyer.First and second structure is known, it is characterized in that: by with the 3rd textural association, the new function of having appended the tetragonal steel backing plate of easy first and second structure of installation, the 3rd structure becomes more effective.Reason is, if as dividing plate is outstanding from post in the past, then also need use to weld tetragonal steel plate system backing plate and dividing plate complete penetration welding or append the channeling operation with backing plate, take unnecessary time.
Invention according to claim 3 on the basis of the effect of claim 1 or 2 described inventions, also has following effect.By using haunch, can omit dividing plate and welding thereof on the lower flange of the beam that is installed on the little side of depth of beam, and the beam lower flange at post beam junction surface concentrates on one the dividing plate and outward appearance becomes good, utilize haunch, section modulus increase, the yield strength of depth of beam raising, beam-ends are improved.Using under the situation of haunch,, needing to adopt enough length for the haunch end that makes the beam center side is no more than the allowable stress of beam.This length to the steel backing plate is also identical.
Invention according to claim 4 on the basis of the effect of claim 1 or 2 or 3 described inventions, also has following effect.Uprise by the allowable stress intensity that makes beam or steel backing plate, even except making these thickness of slab attenuation, maybe can stand outside the higher stress intensity, if also exist low allowable stress intensity then to concentrate the possibility that surpasses allowable stress intensity, concentrate portion also can become safer with respect to stress with respect to stress.In post beam junction surface, by improving the allowable stress intensity of beam flange, do not improve depth of beam and can be near the yield strength of the beam of bigger depth of beam, or make equal more than.
Invention according to claim 5 on the basis of the effect of claim 1 or 2 or 3 or 4 described inventions, also has following effect.On the beam length central portion or below, solder joints band steel, riser or shaped steel perhaps to carrying out hot line processing below the beam length central portion or carry out built-up welding, thereby make beam distortion upward in advance, can suppress deflection of beam.Has the effect that prevents that deflection of beam that the reduction by depth of beam causes from increasing.
Description of drawings
Fig. 1 is an existing post beam junction surface outside drawing.
Fig. 2 has been to use the beam-ends junction surface detailed section view of the arc notch at existing post beam junction surface.
Fig. 3 is the beam-ends junction surface detailed section view of no arc notch of not using the arc notch at existing post beam junction surface.
Fig. 4 is that the face of post beam junction surface plate is out of shape the explanation sectional view outward.
Fig. 5 is the sectional view of tetragonal steel backing plate to the installation situation of beam inboard.
Fig. 6 is the sectional view of tetragonal steel backing plate to the installation welding situation of beam inboard.
Fig. 7 is that tetragonal steel backing plate is installed the sectional view of situation to the butt welding of the beam flange of the inboard central authorities of beam end.
Fig. 8 is that tetragonal steel backing plate under the situation that adopts slot welding as post assembling mode is to the sectional view of the installation situation of beam inboard.
Fig. 9 is adopting tetragonal steel backing plate under the situation that falls into internal partition to the sectional view of the installation situation of beam inboard as post assembling mode.
Figure 10 is the horizontal section of soffit of girder central portion at post beam junction surface of the installation situation of expression steel backing plate.
Figure 11 is the sectional view of the embodiment under the situation of implementing field Welding.
Figure 12 is vertical view, front view, the lateral view of expression to the example that runs through the beam flange installation steel backing plate on the dividing plate of the strong axle side that is installed on H shape steel column.
Figure 13 is vertical view, front view, the lateral view of expression to the example that runs through the beam flange installation steel backing plate on the dividing plate of the weak axle side that is installed on H shape steel column.
Figure 14 is vertical view, front view, the lateral view that the beam flange of expression on the strong axle side of the H shape steel column plate that is installed on the internal partition mode installed the example of steel backing plate.
Figure 15 is that explanation is carried out haunch processing processing at beam-ends, and the sectional view of the beam end lower flange at a plurality of post beams junction surface is installed on identical dividing plate.
Figure 16 utilizes the bending of the member of steel central beam to prevent key diagram.
Figure 17 utilizes the bending of the built-up welding etc. of steel central beam to prevent key diagram.
Figure 18 be utilize the bending of the built-up welding of steel central beam prevent key diagram, promptly, on the beam of beam length central portion or below, the explanation sectional view of the situation of solder joints band steel, riser or shaped steel.
Figure 19 is the sectional view of tetragonal steel backing plate to the installation welding situation of the beam inboard of reserving the gap.
Figure 20 reserves the gap with respect to the post inner face and the key diagram of analysing and observe that backing plate is installed in post assembling.
Figure 21 be in post assembling, use solid plate situation analyse and observe key diagram.
Figure 22 is that the central authorities with the soffit of girder only cut the length suitable with the length of tetragonal steel plate system backing plate, and runs through the beam flange and assemble the key diagram at post beam junction surface at this switch-in part at the scene.
Figure 23 is the key diagram of size of tetragonal steel backing plate that is installed on the below of lower flange.
Figure 24 be installed on lower flange the below the steel backing plate shape and be installed on the key diagram of shape of the steel backing plate of beam flange inner.
Figure 25 be installed on lower flange the below the steel backing plate shape and be installed on the key diagram of shape of the steel backing plate of beam flange inner.
Figure 26 be installed on lower flange the below the steel backing plate shape and be installed on the key diagram of shape of the steel backing plate of beam flange inner.
Figure 27 be installed on lower flange the below the steel backing plate shape and be installed on the key diagram of shape of the steel backing plate of beam flange inner.
Figure 28 be installed on lower flange the below the steel backing plate shape and be installed on the key diagram of shape of the steel backing plate of beam flange inner.
Figure 29 is beam-ends flange and the key diagram of checking with the ultrasonic testing/ ultrasonic examination of welded joint dividing plate the steel backing plate.
Figure 30 carries out bending machining with the steel backing plate to beam flange side in advance, and is installed on the sectional view of beam flange inner.
Figure 31 makes installing under the situation of steel backing plate to the beam flange, the width of steel backing plate is made also narrower than the width of beam flange, does not arrive the key diagram of beam flange side when the steel welding with backing is connected on the beam center side.
Figure 32 makes installing under the situation of steel backing plate to the beam flange, even the width of steel backing plate is made identical with the width of beam flange, does not also arrive the key diagram of beam flange side when the steel welding with backing is connected on the beam center side.
Figure 33 makes installing to the beam flange under the situation of steel backing plate, even cut away the angle of the beam center side of steel backing plate, the width of steel backing plate is made identical, when the steel welding with backing is connected on the beam center side, also do not arrived the key diagram of beam flange side with the width of beam flange.
The specific embodiment
Below, embodiments of the present invention are described.
Fig. 5 represents an example of the described embodiments of the present invention of claim 1, in building reinforced concrete column beam junction surface, remove dividing plate 1 outstanding from post 5, and increase the thickness of slab 1t of dividing plate 1, the weld part 7 of the weld part of axis of a cylinder 5 and dividing plate 1 and beam flange 4F and dividing plate 1 is overlapping and engage, and make than preferably adding that at the beam flange thickness of slab of the thickness of slab of steel plate backing plate also increases this thickening at least and the soffit of girder solder joints of the dividing plate 1 more than the 5mm in soffit of girder side.In addition, Fig. 5 is expressed as follows post beam junction surface structure, this post beam junction surface structure is characterised in that: tetragonal steel plate system backing plate 10RP is close in the inboard by lower flange 4F on beam-ends in the both sides of the soffit of girder 3, and the thickness of slab 1t that makes dividing plate flange inner up and down increases more than the thickness of slab of this backing plate 10RP, with this backing plate 10RP at least solder joints in the center side and the beam-ends side of beam flange, thereby the part of the moment of flexure that beam is applied is born on the soffit of girder or the soffit of girder and this tetragonal steel plate backing plate 10RP.In the present embodiment, the method not specially provided for of welding, but usually, the both sides butt welding of no backing plate is made in the welding 7 of beam-ends flange, and as shown in Figure 6, steel plate system backing plate 10RP makes the butt welding of being with groove to the center side of beam and the installation welding 9W of dividing plate.In addition, steel plate system backing plate 10RP can also make fillet welding 9W to the installation welding 9W of the center side of beam.In addition, as shown in Figure 7, the installation of steel plate system backing plate 10RP welding if its bevel angle is made 35 degree～55 degree, then has the above throat depth 9t of its thickness of slab 10t.In this case, in the joint tensile test, can access the identical tensile strength of butt joint with its thickness of slab 10t.In addition, the width of steel plate system backing plate 10RP does not have special restriction, but common 1/2 identical or littler or big with beam flange 4F.Fillet welding can also be carried out with beam flange 4F in the side of rectangle or trapezoidal tetragonal steel plate system backing plate 10RP.In addition, the thickness of slab 10t of tetragonal steel plate 10RP preferably makes more than 15% of thickness of slab of beam flange 4F.Usually, the axial length of the beam of the 10RP of tetragonal steel plate is more than 1/8 of depth of beam, preferably soffit of girder height or depth of beam more than 1/2.This tetragonal steel plate system backing plate 10RP becomes big with so-called backing plate, and the stress that the beam flange is applied can be fully transmitted in its two ends welding.
Have following effect in the present embodiment and easy, promptly have: the thickness of slab of (1) dividing plate increases effect; (2) remove dividing plate from the outstanding effect of post; (3) effect of overlapping weld part; (4) make the effect of post and soffit of girder solder joints; (5) effect of tetragonal steel backing plate being installed in beam flange inner or the outside; (6) identical sensation and the effect of installing time to be installed with existing backing plate.According to the synergy of these effects, it is very big that moment of flexure is born the effect performance.
In the present embodiment, beam-ends is butt welding to the installation welding of dividing plate, but also can implement with both sides welding or one-sided welding.Under the situation of both sides welding, can implement channeling, can not implement yet, the both can.In addition, can in factory, rectangle or trapezoidal tetragonal steel plate system backing plate 10RP be installed in advance at beam-ends, solder joints steel plate system backing plate 10RP in the building site then, or can also in factory, tetragonal steel plate system backing plate 10RP be installed in advance, solder joints dividing plate and beam flange and beam flange and steel plate system backing plate 10RP in the building site then at dividing plate.By between beam flange and tetragonal steel backing plate, reserving the gap about 0.5～2mm, be preferably the gap about 1mm, the welding of the freedom thereby the front end of quadrangle backing plate becomes and quadrangle backing plate and beam flange is through welding easily, and discharge welding gas easily from this gap, the also difficult weld defect that pore and through welding deficiency etc. take place.In addition, stagger about 1～4mm to the beam center side from beam-ends by the front end with the quadrangle backing plate of beam-ends side, it is good that the welding through welding of beam-ends flange becomes, and is difficult to produce the through welding deficiency.
With regard to the thickness of above-mentioned backing plate, be preferably with the thickness that can carry out ultrasonic testing/ ultrasonic examination according to weldability usually and guarantee 6mm at least.In addition, the thickness of slab of this backing plate is born if only carry out the moment of flexure in the whole cross section of the soffit of girder, then is that about 20% of beam flange are just passable.Reason is, if because 20%, then as can be known, can replenish the moment of flexure of the soffit of girder and bear according to the calculating of finite element method.In addition, bear the yield strength of the above moment of flexure that puts on beam-ends of part, use the thickness of slab of 9mm～15mm for the moment of flexure that improves the whole cross section of the soffit of girder.In this case, dividing plate thickens to the beam flange inner, add the thickness of needed this backing plate of thickness of steel backing plate and the high size of heap of welding according to being welded on the beam flange, be preferably and guarantee 5mm at least that the upper limit of its thickness is to add the high value of welding heap at 20% of the thickness of slab of dividing plate.Soffit of girder height is the value that deducts the beam thickness of flange from depth of beam, the axial length of the beam of steel backing plate, from easy degree effectively depth of beam about 1/8, preferably 1/2 of soffit of girder height or depth of beam about 1/2.Reason is, promptly has only the state of the section modulus and the cross section moments of inertia of beam flange from the non-state of bearing of the moment of flexure of the soffit of girder of beam-ends, and up to the state of the section modulus that becomes the whole cross section of beam and the cross section moments of inertia, about 1/2 of soffit of girder height needs to arrive the beam central portion.
Fig. 8 represents an example of the described embodiments of the present invention of claim 1, represented following method: diaphragm is made internal partition 1U, and this internal partition 1U inserted about 1～10mm to the inside of square bar tubing string or circular steel tubing string, the groove of the groove shape that welding is surrounded with the end of dividing plate 1 and rectangular steel tube end, the method (being called the grooving method) of while welded post 5P and dividing plate 1U, and, overlapping with the weld part 9S of its post and dividing plate, butt welding beam flange 4F and steel backing plate 10RP.In the beam center side end of steel backing plate 10RP, carry out the butt welding of fillet welding or band groove with the beam flange.
Fig. 9 represents an example of the described embodiments of the present invention of claim 1.In the present embodiment, dividing plate is made internal partition 1U, and this internal partition 1U is fallen into the height and position of beam flange of the inside of square bar tubing string or circular steel tubing string, and be close to composition backing 10, within it butt welding beam flange 4F and steel backing plate 10RP in the face of dividing plate at the back side of dividing plate 1U.In the beam center side end of steel backing plate 10RP, with the beam flange carry out fillet welding or the band groove butt welding 9W.
Figure 10 represents an example of the described embodiments of the present invention of claim 1, the horizontal section of the soffit of girder central portion at the post beam junction surface that expression is represented the installation situation of steel backing plate 10RP.9W is welded in post side and beam center side in the both ends of steel backing plate 10RP.The side of steel backing plate 10RP also can be welded as required.
Figure 11 represents an example of the described embodiments of the present invention of claim 1, is expressed as follows example: tetragonal steel backing plate is close in the inboard at the upper flange of beam-ends, and is close to tetragonal steel backing plate in the outside of the lower flange of beam-ends.The sectional view of the embodiment under the situation that Figure 11 represents to use steel backing plate 10RP to implement field Welding.Be expressed as follows figure in the present example: in the beam center side, in factory, steel backing plate 10RP is installed in advance, in the building site, below steel backing plate 10RP, is close to backing plate and carries out field Welding at the downside of the downside of upper flange and lower flange.As application in this case, can adopt following method: butt welding steel backing plate 10RP on post or dividing plate in advance in factory, in the building site, this steel backing plate 10RP is used as backing plate, loading girder flange end thereon, on the beam flange, after the beam center side of welding steel backing plate 10RP, carry out the butt welding 7 of post 5P and beam-ends 4F.
Figure 12～Figure 14 represents the described embodiments of the present invention of claim 2.Expression reinforced concrete column beam junction surface structure in these figure, this reinforced concrete column beam junction surface structure, overlap each other to make not and be engaged in the weld part on the H shape steel column 5H and make the weld part of dividing plate be engaged in weld part on the H shape girder steel flange from the outstanding dividing plate 1 that runs through of this post, perhaps, make beam flange and the direct solder joints of H shape steel column, perhaps, make internal partition and H shape steel column engage and make H shape girder steel flange engages in the face of this dividing plate on the extended line, this reinforced concrete column beam junction surface structure is characterised in that: by being close to tetragonal steel backing plate in the flange inner up and down of post curb girder end, the thickness of slab of each dividing plate that perhaps will be is up and down made more than the thickness of slab of the thickness of slab that adds thick and this backing plate of upper beam flange plate, and to a side of this backing plate of major general and the beam center side solder joints of beam flange, and make the opposing party and the beam-ends side dividing plate or the post solder joints of this backing plate, thereby will be among the moment of flexure that puts on the beam, part or all of the moment of flexure that should be born by the beam-ends soffit of girder or more than it born with this beam-ends flange and this quadrangle steel backing plate.
Figure 12 represents the example that runs through the beam flange 4 installation steel backing plate 10RP on the dividing plate 1 to the strong axle side that is installed on H shape steel column 5H.In the present example, the soffit of girder 3 of post 5H is present in the identical face with the soffit of girder 3 of beam 4, and the soffit of girder of beam can be born moment of flexure, by steel backing plate 10RP is installed, guarantees bigger section modulus at beam 4.In addition, have at beam 4 under the situation of arc notch, also can guarantee not have the section modulus of the above beam of arc notch.
Figure 13 represents the example that runs through the beam flange installation steel backing plate on the dividing plate to the weak axle side that is installed on H shape steel column.In the present example, the soffit of girder 3 of the stiffener 18 of post 5H and the beam 4 of post 5H is present in the identical face, and the soffit of girder of beam can be born moment of flexure, by steel backing plate 10RP is installed, guarantees bigger section modulus at beam 4.In addition, have at beam 4 under the situation of arc notch, also can guarantee not have the section modulus of the above beam of arc notch.
Figure 14 represents to install to the beam flange of the strong axle side of the H shape steel column plate that is installed on the internal partition mode example of steel backing plate.The beam flange 4 of expression in the face of the internal partition 1U of the strong axle side that is installed on H shape steel column 5H installed the example of steel backing plate 10RP.In the present example, the soffit of girder 3 of post 5H is present in the identical face with the soffit of girder 3 of beam 4, and the soffit of girder of beam can be born moment of flexure, by steel backing plate 10RP is installed, guarantees bigger section modulus on beam 4.In addition, even have at beam 4 under the situation of arc notch, also can guarantee not have the section modulus of the above beam of arc notch.
Figure 15 represents an example of claim 1 or 2 described embodiments of the present invention, expression post beam junction surface structure, this post beam junction surface structure is characterised in that: the beam 4 at the opposing party's of an identical post beam junction surface and a side's big beam 4L adjacency littler height is carried out haunch handle a plurality of beam end lower flanges at erection column beam junction surface on identical dividing plate 1.Increase owing to apply the depth of beam of the beam of haunch, therefore, section modulus increases and has the situation that does not need the steel backing plate, but under the situation of section modulus deficiency, according to claim 1 or 2, in the beam flange inner or the outside steel backing plate is installed.
As the described embodiments of the present invention of claim 4, in claim 1,2 or 3 described inventions,, use for example 400N/mm of allowable stress strength ratio beam central portion flange or backing plate or its both sides of beam-ends 2The also high for example 490～600N/mm of level steel 2The grade high-strength steel.The also part that can change the beam flange 4F of beam-ends with the also big beam flange 4B of thickness ratio beam central portion with the beam flange 4F of beam-ends, perhaps the beam flange 4B with slab changes beam bracket 4K integral body.
As the described embodiments of the present invention of claim 5, Figure 16 is expressed as follows the post beam junction surface structure of making, in claim 1 to 4 in any one described invention, on the beam length central portion or below, the member of solder joints band steel, riser, shaped steel 16 etc., perhaps below the beam length central portion, carry out hot line processing or add welding bead 19, thereby make beam distortion upward in advance.Figure 17 adds and subtracts the amount of bead welding 19 according to diastrophic degree.As Figure 16 and shown in Figure 17, the described structure of the present invention of claim 5 is on the basis of the described invention of claim 1 to 4, it is characterized in that: on the beam 4C of beam length central portion or below solder joints band steel, riser, shaped steel 16, perhaps below the beam length central portion, carry out hot line processing, perhaps carry out built-up welding and make beam distortion upward in advance, thereby suppress deflection of beam.On the beam flange, install under the situation of these members, can also fix at the concrete that beam width central authorities are used for the bottom surface slab.If these members are installed below the beam flange, then the axial beam-ends of a welded grider gets final product, and is therefore the most laborsaving.
As the described embodiments of the present invention of claim 6, Figure 18 represents post beam junction surface structure, this post beam junction surface structure in any one described invention, is characterized in that in claim 1 to 5: reserve the gap A about 0.5～2mm between beam flange 4F and tetragonal steel backing plate 10RP.If this gap A does not have or is few, then bad to the through welding of the welding of welding root, if excessive, then be difficult to form welding bead.If gap A guarantees to be preferably about 0.5 to 2mm the gap about 1mm, then guarantee through welding easily, and, be not easy to take place the defective of weld part easily from gap discharging welding gas to the welding of welding root.
As the described embodiments of the present invention of claim 7, Figure 19 is expressed as follows the post beam junction surface structure of making, in claim 1 to 6 in any one described invention, from the opposition side of the beam flange 4F that carries out bevel for welding is that steel backing plate 10RP side is welded 9W, the welding bead surface is exposed to after the groove side, back chipping and carry out the welding 7 of groove side does not weld beam flange 4F and the end of dividing plate 1 or the outside of post 5 of splicing tpae steel backing plate 10RP with complete penetration.
As the described embodiments of the present invention of claim 8, Figure 20 represents post beam junction surface structure, on the basis of this post beam junction surface structure any one described invention in claim 1 to 7, it is characterized in that: the gap of reserving 0.5～4mm with the inner face of post 5 be preferably about 2mm the gap and after the post inner face is installed backing plate 10U, be preferably under the situation about 3mm guaranteeing to weld root gap 0～5mm, solder joints not from post outstanding run through dividing plate and this column end.
As the described embodiments of the present invention of claim 9, Figure 21 represents post beam junction surface structure, on the basis of this post beam junction surface structure any one described invention in claim 1 to 8, it is characterized in that: the post inner face install reserve the backing plate 10U in gap of 0.5～4mm with the post inner face after, form post beam junction surface board with solid steel 20, come solder joints this solid member 20 and this column end 2 with the narrow groove that welds root gap 0～4mm.As physical member can be any of rolled plate, forged material, founding materials, this physical member can also be by being welded to one another incorporate a plurality of members assemblings and making.
In the described invention of claim 1, in the welding procedure of building site, the both sides of the soffit of girder are being close under the situation of manufacture method at post beam junction surface of tetragonal steel plate system backing plate to the post side in advance having adopted in the flange inner up and down of beam-ends, at the scene during building method, inserting between the post under the situation of beam, this tetragonal steel plate contacts with the soffit of girder, produces difficulty.In addition, if in advance at this tetragonal steel plate of beam flange inner solder joints, then the welded gaps of post and beam-ends is excessive, and welding capacity increases.At dividing plate tetragonal steel plate system backing plate 10RP is being installed in the factory in advance, and in the building site under the situation of solder joints dividing plate and beam flange and beam flange and steel plate system backing plate 10RP, owing to tetragonal steel plate system backing plate 10RP installs across the soffit of girder, therefore as shown in figure 22, the central authorities of the soffit of girder are only cut the length of tetragonal steel plate system backing plate 10RP, at the scene, assemble post beam junction surface by the beam flange at this switch-in part.
In the described invention of claim 1, be installed on the steel plate system backing plate 9 of lower flange downside, as shown in figure 23, can also be bigger or little than the width of beam flange 4F.
In the described invention of claim 1, be installed on the steel plate system backing plate 10RP of flange inner up and down and be installed on the steel plate system backing plate 9 of lower flange downside, extremely shown in Figure 28 as Figure 24, can make polygon arbitrarily.
In the described invention of claim 1 to 9, shown in the key diagram that the ultrasonic testing/ ultrasonic examination of the welded joint 7 of the beam-ends flange 4F of Figure 29 and steel backing plate 10RP and dividing plate and 9W is checked, owing to do not have existing backing plate and cover plate, therefore can not hinder ultrasound beamformer 22, thereby, carry out the ultrasonic test inspection easily by this weld part.
In the described invention of claim 1 to 9, set for the thickness 10t and the length 10L of steel backing plate 9 as follows: the average generation stress that the stress that removes beam flange 4F and steel backing plate beam end shown in Figure 6 is concentrated, the mean stress more independent than the beam flange 4F of the beam center side end weld part tape edge portion of steel backing plate 9 is also little.If make like this, then buckling of the beam flange 4F of beam-ends and steel backing plate 9 is not easy to take place.
In the described invention of claim 1 to 9, as shown in figure 30, if steel backing plate 9K is carried out the bending machining of " へ " word, to keep 1～2mm with the gap of beam flange 4F at its two ends and weld, even then bear compression load at steel backing plate 9K, its distortion also betides beam flange side, therefore is not easy to take place buckling as the steel backing plate 9K that separates from the beam flange.In addition, the bending machining of " へ " word can bending machining more than 2 times, can also be processed into circular arc or ellipse etc.
In the described invention of claim 1 to 9, as shown in figure 31, with steel backing plate 9 under the situation that beam flange 4F installs, the width of steel backing plate 9 is made also littler than the width of beam flange 4F, and make at steel backing plate 9 and when the beam center side is welded, do not arrive beam flange 4F side.This is to cut away because of sweating heat for the side that prevents the beam flange.
In the described invention of claim 1 to 9, shown in figure 32,, under the situation that beam flange 4F installs,, also make at steel backing plate 9 and when the beam center side is welded, do not arrive beam flange 4F side at steel backing plate 9 even the width of steel backing plate 9 is made identical with the width of beam flange 4F.This is to cut away because of sweating heat for the side that prevents the beam flange.
In the described invention of claim 1 to 9, as shown in figure 33, at steel backing plate 9 under the situation that beam flange 4F installs, cut away the angle of the beam center side of steel backing plate 9, even the width of steel backing plate 9 is made identical, also make at steel backing plate 9 and when the beam center side is welded, do not arrive beam flange 4F side with beam flange 4F width.This is to cut away because of sweating heat for the side that prevents the beam flange.In addition, replace the angle cut away steel backing plate 9, and near the welding of the beam center side of steel backing plate 9, blunt otch is set, thereby can concentrate by the stress of mitigation on the beam flange side of the welding of the beam center side of plate 9.
Symbol description
The 1-dividing plate, 1A-dividing plate outstanding, the 1U-internal partition, the 2-plate, 2Z-is in the general name of the member of plate district combination dividing plate and post short tube, the 3-soffit of girder, the non-length of bearing of the 3a-soffit of girder, the 3b-soffit of girder is born length, and the 3W-soffit of girder is installed welding section, 3tW-soffit of girder thickness of slab, the 4-beam, 4B-slab beam flange, 4bf-beam flange width, 4C-central authorities beam, 4F-beam flange, the beam that 4L-is big, 4M-beam Bending moment distribution, 4H-carry out the beam flange of haunch processing, the 4K-beam bracket, 4tf-beam flange thickness of slab, 5-axis of a cylinder, 5P-square bar tubing string or round steel pipe post, 5H-H shape steel column, the 6-post, dividing plate welding section, 7-beam flange, dividing plate welding section, the welding section of 7B-slab beam flange and slab beam flange, the welding section of 7F-slab beam flange and the soffit of girder, the welding section of 7U-internal partition and post inside, the 8-erection welding, 9-is installed on the steel backing plate of beam flange, the 9K-bending machining becomes the steel backing plate of へ font, 9W-steel backing plate welding section, 9S-slot welding section, 9t-steel backing plate welding section weld seam thickness, the 10-backing plate, 10U-backing plate, 10RP-are installed on the steel backing plate of beam flange inner, and 10FP-is installed on the steel backing plate of beam flange outer sides, the thickness of slab of 10t-steel backing plate, the length of 10L-steel backing plate, the 11-arc notch, 11N-does not have arc notch, the 12-face is out of shape outward, the stress of the beam end of 13-in the situation of utilizing plate support beam moment of flexure flows, and 14-carries out the beam flange that haunch is processed, and 15-increases thick beam flange, the 16-solder joints above section of length central authorities or below band steel, the member of vertical plate or shaped steel etc., 17-angle brace plate, 18-stiffener, 19-bead welding, the 20-solid member is physical member, the 21-ultrasonic probe, 22-ultrasound beamformer direction, 23-ultrasonic probe lead.

Claims (9)

1. a post beam junction surface structure is characterized in that,
Will solder joints on square bar tubing string or the circular steel tubing string not from the outstanding weld part that runs through dividing plate of this post, with the weld part of this dividing plate solder joints on H shape girder steel flange overlapped each other, perhaps, make the internal partition solder joints in square bar tubing string or circular steel tubing string and make H shape girder steel flange engages in the face of this dividing plate on the extended line
On post curb girder end above the beam of the conduct of lower flange welding root side or below be close to the steel backing plate,
The thickness of slab of up and down each dividing plate is made more than the thickness of slab of the thickness of slab that adds thick and this backing plate of upper beam flange plate,
To a square tube of this backing plate of major general cross groove processing and solder joints in the beam center side of beam flange, with the opposing party of this backing plate by groove processing solder joints in beam-ends side dividing plate or its face on the cylinder on the extended line.
2. a post beam junction surface structure is characterized in that,
To engage not the weld part that is engaged in H shape girder steel flange from the outstanding weld part that runs through dividing plate of this post, with the weld part that makes dividing plate on H shape steel column overlaps each other, perhaps, make the direct solder joints of beam flange on H shape steel column, perhaps, make internal partition be engaged on the H shape steel column and make H shape girder steel flange engages H shape steel column face on the extended line in the face of this dividing plate
On post curb girder end above the beam of the conduct of lower flange welding root side or below be close to tetragonal steel backing plate,
The thickness of slab of up and down each dividing plate is made more than the thickness of slab of the thickness of slab that adds thick and this steel backing plate of upper beam flange plate,
To a square tube of this backing plate of major general cross groove processing and solder joints in the beam center side of beam flange, and with the opposing party of this steel backing plate by groove processing solder joints in beam-ends side dividing plate or its face on the cylinder on the extended line.
3. post beam according to claim 1 and 2 junction surface structure is characterized in that,
Beam at the opposing party's of an identical post beam junction surface and a side's beam adjacency littler height is carried out haunch handle a plurality of beam end lower flanges at erection column beam junction surface on identical dividing plate.
4. according to any one described post beam junction surface structure in the claim 1 to 3, it is characterized in that,
On the flange or steel backing plate or its both sides of beam-ends, allowable stress intensity height or the big steel of thickness of slab are compared in use with the beam central portion.
5. according to any one described post beam junction surface structure in the claim 1 to 4, it is characterized in that,
On the beam length central portion or below solder joints band steel, riser or shaped steel, perhaps, below the beam length central portion, carry out hot line processing or add welding bead, thereby make beam distortion upward in advance.
6. according to any one described post beam junction surface structure in the claim 1 to 5, it is characterized in that,
Between beam flange and tetragonal steel backing plate, reserve the gap about 0.5～2mm.
7. according to any one described post beam junction surface structure in the claim 1 to 6, it is characterized in that,
There is not existing backing plate, and weld from the opposition side of the beam flange of having implemented bevel for welding, make welding bead be exposed to the groove side, and back chipping and carry out the welding of groove side not, beam flange and the dividing plate end or the post outside of welding splicing tpae steel backing plate with complete penetration.
8. according to any one described post beam junction surface structure in the claim 1 to 7, it is characterized in that,
At the post inner face backing plate of reserving the gap of 0.5～4mm with the post inner face is installed, with the welding root gap be the narrow groove of 0～4mm come solder joints not from post outstanding run through dividing plate and this column end.
9. according to any one described post beam junction surface structure in the claim 1 to 8, it is characterized in that,
Forming post beam junction surface board with solid steel, is that the narrow groove of 0～4mm comes this solid member of solder joints and this column end with the welding root gap.
CN200980144644.5A 2008-11-10 2009-11-10 Column-beam connection structure Expired - Fee Related CN102209817B (en)

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JP2010261294A (en) 2010-11-18
WO2010053189A1 (en) 2010-05-14

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