CN101265729A - All angle steel type flexion-preventing bracing member and its processing method - Google Patents

Abstract

An all-steel welded buckling resistant support component and a processing method thereof are provided, which relate to a buckling resistant support component and the processing method thereof. The invention solves the problems of the prior all-steel buckling resistant support component that the structure itself results in more welding work and complex process and the more welding work results in failing to guarantee the processing quality and the installation quality of the actual project. Two angle steel components (7-1) are correspondingly clamped on the outside of a support inner core (5) for being fixedly connected into a whole, the arm walls of four equilateral angle steel components (5-1) are leaned to each other in the backs for forming a cruciform cross section by a fixed connection, two stiffening ribs are fixed arranged between the two arm walls of each equilateral angle steel component (5-1). The method includes the following steps: processing the support inner core, installing the stiffening ribs and installing outsourcing confining parts. The method has the advantages of less welding work, simple process, excellent mechanical property, facilitated analysis and design and guaranteed installation quality of the practical project.

Description

All angle steel type flexion-preventing bracing member and processing method thereof

Technical field

The present invention relates to a kind of curvature-prevention support component, be specifically related to a kind of be mainly used in the structural engineering field lateral resistant member (also being a kind of energy-consumption shock-absorption device) with and processing method.

Background technology

Existing curvature-prevention support component has the following disadvantages.For the anti-flexing supporting form of traditional all steel of square steel pipe constraint cross welding central layer, its support node plate 3 welds together with the both ends of the surface of cross central layer 1 respectively.Because the cross section of the section ratio support node plate 3 of overcoat square steel pipe 2 is little, therefore the support node plate 3 of an other end must be after cross central layer 1 inserts steel pipe 2 again by the other end of melting butt weld and cross central layer entirely fuse (referring to Fig. 1～2).(cross central layer 1, support node plate 3 all needed to be welded welding capacity greatly when above-mentioned existing curvature-prevention support component existence was manufactured, support node plate 3 needs welding with the both ends of the surface of cross central layer 1), the welding capacity conference causes following two class subject matters:

One, the process quality issue of supporting member

At first, the permanent set of the plate that a large amount of long line welding is caused between support node plate 3 and cross central layer 1 each plate, thereby cross central layer 1 is come in contact with the steel pipe inwall in inserting the process of steel pipe 2 produce excessive frictional force, this frictional force even can cause cross central layer 1 can't pass through steel pipe causes certain obstacle to its processing and fabricating.On the other hand, when melting entirely between the both ends of the surface of support node plate 3 and cross central layer 1 when docking, local thermal stress can make the relative welding buckling deformation of generation between the support node plate 3 at cross central layer 1 and its two ends, cause support node plate 3 not overlap and produce off-centre, can bring difficulty in the construction to being supported on installation in the actual engineering like this with the center line of cross central layer 1.The above shows that fully the defective of existing (traditional) all steel curvature-prevention support component aspect production and processing can't guarantee the installation quality of the crudy and the actual engineering of its finished product.

Two, the mechanical property defective of Zhi Chenging

At first, the support node plate 3 that welding residual deformation caused is understood the serious resistance to overturning that reduces supporting member with the relative off-centre between the cross central layer 1, and this be the factor that researcher and project planner can't consider strictly according to the facts by processing relative offset that random error caused, therefore can't guarantee that it has reliable stability bearing capacity from design; In addition, the thermal stress that welding produced between the plate can reduce the low-cycle fatigue life of cross central layer 1 greatly, this type of problem is particularly outstanding when cross central layer 1 enters big plastic strain, can cause cross central layer 1 in seismic process, to take place in advance to rupture and can not give full play to its energy dissipation capacity, and the influence to low-cycle fatigue life that this welding caused also is that the researcher can't accurately estimate.At last; at design aspect, welding also can significantly change the actual surrender axle power of inner core, makes design surrender axle power inconsistent with actual surrender axle power; thereby may cause under middle shake effect, supporting member can not reach the purpose of protection agent structure then prior to the structure surrender.The above proves absolutely, the mechanical property defective of existing (traditional) all steel curvature-prevention support component makes the project planner guarantee that it has reliable stability and low cycle fatigue property from design, can't guarantee also that simultaneously supporting member can surrender prior to structure, these factors all can cause the design performance of this type of supporting member and actual performance far from each other.

In sum, because the defective of existing (traditional) all steel curvature-prevention support component on production and processing and mechanical property, people are difficult in that the actual performance to existing all steel curvature-prevention support component provides reliable guidance in method for designing even the practical application.

Summary of the invention

The present invention exists because the welding capacity that self structure is brought is big, the problem of complex manufacturing in order to solve existing all steel curvature-prevention support component, and welding capacity cause greatly guaranteeing crudy and actual engineering installation quality, can't from the design guarantee that it has reliable stability and low cycle fatigue property, can't guarantee also that simultaneously supporting member can be prior to the problem of structure surrender, and then a kind of all angle steel type flexion-preventing bracing member and processing method thereof are provided.

The technical solution adopted for the present invention to solve the technical problems is: a kind of all angle steel type flexion-preventing bracing member, it comprises the support inner core, the outsourcing confining part, described outsourcing confining part is made up of two angle members, described two angle members are clipped in the outside and affixed being integral of supporting inner core relatively, described curvature-prevention support component also comprises eight stiffening ribs, described support inner core is made up of four equal leg angle spares, described four equal leg angle spare limb wall back sides are leaned on and affixed formation cross section mutually, are fixed with two stiffening ribs between the two limb walls of described each equal leg angle spare.

The processing method of described all angle steel type flexion-preventing bracing member realizes according to following steps: step 1, with four equal leg angle spare limb wall back sides mutually by and the support inner core of affixed formation cross section; Step 2, eight stiffening ribs are packed in respectively between the two limb walls of each equal leg angle spare; Step 3, two angle members are clipped in relatively the outside and affixed being integral of supporting inner core; Step 4, finish the processing of all angle steel type flexion-preventing bracing member.

The present invention has following beneficial effect: the present invention has that welding capacity is less, production technology is easy, mechanical property is superior and is convenient to analyze design, can guarantees the advantage of the installation quality of actual engineering.Advantage of the present invention is in particular in the following aspects: one, support inner core and outsourcing confining part and directly adopt the cutting processing of ready-made equal leg angle on the market to form, it is unified and cheap to draw materials; Two, avoid supporting welding between the adjacent plate of inner core surrender section, simplified production technology greatly, guaranteed the quality of finished product, reduced the production and processing defective and the mechanical property defective that support inner core simultaneously again; Three, the outsourcing confining part adopts the double angle connecting method to replace traditional square steel pipe, avoided docking of integral node stretch section Lc (support node plate) and the both ends of the surface that support inner core, reduced the caused welding residual deformation of welding, the construction and installation quality and the actual performance of supporting member are all reliably guaranteed; Four, owing to reduced various production and processing defectives and mechanical property defective that the traditional mode of production mode is caused, make all angle steel type flexion-preventing bracing member be convenient to the engineer more and analyze and design, therefore can guarantee the actual performance of supporting member and the uniformity of design performance; Five, support and need not that non-cohesive material is set between inner core and the outsourcing confining part or special parts are set to reserve between the two gap, only need make simple mechanical chamfered at the acropodium place of inner core angle steel just can preset clearance, further simplified its production technology, can reduce simultaneously the frictional force between inner core and the confining part again, make that both division of labor is clearer and more definite.

Description of drawings

Fig. 1 is the structure and the production and processing process schematic diagram thereof of existing all steel curvature-prevention support component, Fig. 2 is the A-A sectional view of Fig. 1, Fig. 3 is a production and processing process schematic diagram of the present invention, Fig. 4 supports the wherein stereogram of an equal leg angle spare of inner core, Fig. 5 is the stereogram of an angle member in the outsourcing confining part, Fig. 6 is the stereogram of stiffening rib, Fig. 7 is the B-B sectional view of Fig. 3, Fig. 8 is the C-C sectional view of Fig. 3, and Fig. 9 is the D-D sectional view of Fig. 3, and Figure 10 is the E-E sectional view of Fig. 3, Figure 11 is the F portion enlarged drawing of Fig. 7, Figure 12 is the G portion enlarged drawing of Fig. 8, and Figure 13 is the H portion enlarged drawing of Fig. 9, and Figure 14 is the I portion enlarged drawing of Figure 10, Figure 15 is front view of the present invention (outsourcing confining part 7 does not draw), Figure 16 is a front view of the present invention, and Figure 17 is an actual project installation schematic diagram of the present invention, and Figure 18 is the J-J sectional drawing of Figure 17.

The specific embodiment

The specific embodiment one: shown in Fig. 3～14, the described all angle steel type flexion-preventing bracing member of present embodiment, it comprises supports inner core 5, outsourcing confining part 7, described outsourcing confining part 7 is made up of two angle member 7-1, described two angle member 7-1 are clipped in the outside and affixed being integral of supporting inner core 5 relatively, described curvature-prevention support component also comprises eight stiffening ribs 6, described support inner core 5 is made up of four equal leg angle spare 5-1, described four equal leg angle spare 5-1 limb wall back sides are leaned on and affixed formation cross section mutually, are fixed with two stiffening ribs 6 between the two limb walls of described each equal leg angle spare 5-1.Described eight stiffening ribs 6 all are 45 ° of directions along two limb walls with four equal leg angle spare 5-1 and place.

Each equal leg angle spare 5-1 in the above-mentioned support inner core 5 all forms via flame cutting time processing, make to dig the limit smoothing processing in the edges and corners of angle steel then, make chamfered with the gap (referring to Fig. 7) between reservation and the outsourcing confining part 7 at angle steel acropodium F place at last.The chamfering smoothing processing is made in acropodium position at outsourcing confining part 7, is positioned in the middle of the outsourcing confining part 7 supporting inner core 5 then, and longitudinally welds at the adjacent acropodium H place of outsourcing confining part 7, promptly two equal leg angles 7 be connected as a single entity (referring to Fig. 9).

The specific embodiment two: shown in Fig. 3～14, described four the equal leg angle spare 5-1 of present embodiment form by two sections support node linkage section 5-1-1, two sections chamfered transition section 5-1-2, interlude 5-1-3, described two sections chamfered transition section 5-1-2 are separately positioned between the two ends of interlude 5-1-3 and the two sections support node linkage section 5-1-1 and make one, the section area of described interlude 5-1-3 is less than the section area of chamfered transition section 5-1-2, angle α≤45 between described chamfered transition section 5-1-2 and the interlude 5-1-3 °.

Support node linkage section 5-1-1 is that node elastic section Lc1, chamfered transition section 5-1-2 are changeover portion Ltr1, and interlude 5-1-3 is surrender section Ly1.Support inner core 5 after machining is divided into three parts along its length, i.e. integral node stretch section Lc, integral transition section Ltr and integral yield section Ly, and its corresponding cross sectional area is respectively Ac, Atr and Ay, generally makes Ac=2Ay.Changeover portion Ltr between Lc and the Ly adopts the skew lines transition, and requires the gradient to concentrate to slow down stress less than 45 degree.The limb back of the body between above-mentioned support inner core 5 each equal leg angles is leaned on mutually, and longitudinally weld between the adjacent angle steel acropodium in the node elastic segment limit, promptly in integral node stretch section zone, the weld seam of four the equal leg angle spare that script separates 5-1 by acropodium I place be connected as a single entity (referring to Figure 10).Other composition and annexation are identical with the specific embodiment one.

The specific embodiment three: as shown in Figure 3, the processing method of the described all angle steel type flexion-preventing bracing member of present embodiment realizes according to following steps: step 1, with four equal leg angle spare 5-1 limb wall back sides mutually by and the support inner core 5 of affixed formation cross section; Step 2, eight stiffening ribs 6 are packed in respectively between the two limb walls of each equal leg angle spare 5-1; Step 3, two angle member 7-1 are clipped in relatively the outside and affixed being integral of supporting inner core 5; Step 4, finish the processing of all angle steel type flexion-preventing bracing member.

The specific embodiment four: shown in Fig. 3, Figure 15～18, present embodiment is that the present invention is installed in a embodiment in the actual engineering: support equal leg angle spare 5-1 splicing the becoming cross that inner core 5 is leaned on mutually by four limbs back ofs the body, be divided into integral node stretch section Lc, integral transition section Ltr and integral yield section Ly along axis direction, once cutting is finished along its length; Chamfered will be made in acropodium position in the surrender section zone of above-mentioned support inner core 5.In surrender section zone, be not welded to connect joint between the acropodium of adjacent angle steel.Carry out the welding of shallow degree in the node elastic section zone of above-mentioned support inner core 5 between the adjacent angle steel acropodium, four angle steel that make this zone hold together by the weld seam at acropodium place.In the zone of surrender section Ly end and changeover portion Lcr, the edge becomes the directions of 45 degree to place stiffening ribs 6 respectively with two limbs of angle steel, and adopts shallow degree welding between stiffening rib and angle steel.Chamfered is made in acropodium position at outsourcing confining part 7, then supporting the centre that inner core 5 symmetries are placed on outsourcing confining part 7, and longitudinally weld at the adjacent acropodium place of outsourcing constraint angle steel 7, promptly outsourcing confining part 7 is connected as a single entity by weld seam at adjacent acropodium place.After the boring, be connected to actual engineering framework gusset plate 10 places by connecting plate 8 and high-strength bolt 9 again on the support node plate at support inner core 5 two ends, finish installation.

Claims (3)

1, a kind of all angle steel type flexion-preventing bracing member, it comprises supports inner core (5), outsourcing confining part (7), it is characterized in that described outsourcing confining part (7) is made up of two angle members (7-1), described two angle members (7-1) are clipped in the outside and affixed being integral of supporting inner core (5) relatively, described curvature-prevention support component also comprises eight stiffening ribs (6), described support inner core (5) is made up of four equal leg angle spares (5-1), described four equal leg angle spares (5-1) limb wall back side is leaned on and affixed formation cross section mutually, is fixed with two stiffening ribs (6) between the two limb walls of described each equal leg angle spare (5-1).

2, all angle steel type flexion-preventing bracing member according to claim 1, it is characterized in that described four equal leg angle spares (5-1) are by two sections support node linkage sections (5-1-1), two sections chamfered transition sections (5-1-2), interlude (5-1-3) is formed, described two sections chamfered transition sections (5-1-2) are separately positioned between the two ends of interlude (5-1-3) and the two sections support node linkage sections (5-1-1) and make one, the section area of described interlude (5-1-3) is less than the section area of chamfered transition section (5-1-2), angle α≤45 between described chamfered transition section (5-1-2) and the interlude (5-1-3) °.

3, the processing method of the described all angle steel type flexion-preventing bracing member of a kind of claim 1 is characterized in that it realizes according to following steps: step 1, with four equal leg angle spares (5-1) limb wall back side mutually by and the support inner core (5) of affixed formation cross section; Step 2, eight stiffening ribs (6) are packed in respectively between the two limb walls of each equal leg angle spare (5-1); Step 3, two angle members (7-1) are clipped in relatively the outside and affixed being integral of supporting inner core (5); Step 4, finish the processing of all angle steel type flexion-preventing bracing member.

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