CN104912227A - End part connecting node for split buckling constraint support rod and installing method - Google Patents
End part connecting node for split buckling constraint support rod and installing method Download PDFInfo
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- CN104912227A CN104912227A CN201510340397.3A CN201510340397A CN104912227A CN 104912227 A CN104912227 A CN 104912227A CN 201510340397 A CN201510340397 A CN 201510340397A CN 104912227 A CN104912227 A CN 104912227A
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- restrained brace
- buckling restrained
- otic placode
- pin shaft
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Abstract
The invention discloses an end part connecting node for a split buckling constraint support rod. The end part connecting node comprises connecting lug plates and a conversion plate, wherein one end surface of the conversion plate is fixedly connected with a buckling constraint support element; the other end surface of the conversion plate is vertically and fixedly connected with the connecting lug plates; and a pin shaft hole is formed in each connecting lug plate. Meanwhile, the invention also discloses an installing method of the split buckling constraint support rod. The installing method comprises the following steps of: 1, welding the conversion plate and the connecting lug plates into a connecting element; 2, using a pin shaft for installing the connecting element onto a support seat of a building structure; 3, actually measuring the actual distance A between the two connecting elements, and the length B of the buckling constraint support rod, wherein the difference of the A and the B is greater than or equal to 10mm but smaller than or equal to 50mm; and 4, using hoisting equipment for hoisting a support rod element and plugging the support rod element to a position between the two connecting elements to be welded. The pin shaft type connection between the end part connecting node and an any-cross-section sectional material (including an l-shaped-cross section sectional material, a crossed-cross-section sectional material, an H-shaped-cross-section sectional material, a square-shaped-cross-section sectional material and the like) can be realized; meanwhile, the installing method is convenient and fast; and the workload due to field reaming or cutting and moving of installed components is avoided, or the cost increase due to rework for many times is avoided.
Description
Technical field
The invention belongs to Installation Technique of Steel Structure field in construction work, relate to a kind of end connection node of split type buckling restrained brace, particularly relate to a kind of mounting method of split type buckling restrained brace bar.
Background technology
Nowadays in Installation Technique of Steel Structure field, buckling restrained brace is as seismic energy dissipation structure component, damper and bearing structure component are widely used, buckling restrained brace is by core, the sleeve of constraint core flexing and the all-in-one-piece supporting member of one of the non-cohesive material be positioned between core and sleeve and packing material composition, usually its core is monolithic sheet material (as Fig. 1), i.e. yi word pattern cross section or two yi word pattern cross section (pin type connected node is made in other cross sections in conventional coupling arrangement), lead plug axis hole in the free-extension section of core, or pin type connected node is made by Flange joint in termination, this type of node installation error is larger, and prior art is disposable tiltedly putting lifts connection, be not suitable for high accuracy to install, when there is error in installation process, can only by extending sales axis hole or install these methods reducing quality requirements of fixing termination cutting backward shift, this error processing method takes time and effort, efficiency is low, and the stability of buckling restrained brace entirety can be affected, likely reduce bearing capacity size.
Require in existing " acceptance standard of engineering quality of steel structure " (GB50205) that the aperture of pin shaft hole is than pin diameter only large 2mm, namely the construction and installation regulated quantity of supporting rod is only 2mm, in the realm of building construction, concerning the supporting rod tiltedly put, installation accuracy requires very high, therefore very easily produces error.Therefore a kind of brand-new node and mounting method is badly in need of in the industry to make up the deficiency in prior art.
Summary of the invention
The present invention is in order to overcome above-mentioned the deficiencies in the prior art, provide not only a kind of split type buckling restrained brace end connection node, additionally provide a kind of mounting method of split type buckling restrained brace bar, the high accuracy being reached zero error by split type method of attachment is installed.
The feature of a kind of split type buckling restrained brace end connection node of the present invention by a kind of special support termination, buckling restrained brace structure is separated, and be connected by realizing carrying out pin type with arbitrary section core in the method supporting termination increase change-over panel, namely one piece of change-over panel perpendicular to core length direction is respectively added in the termination of the free-extension section of two ends buckling restrained brace core, then at assembled monolithic or the polylith connection otic placode being drilled with pin shaft hole of the opposite side of change-over panel, can realize with arbitrary section core (containing yi word pattern, cross, H type, type etc.) pin type connect.
The mounting method feature of a kind of split type buckling restrained brace bar of the present invention utilizes split type method of attachment, error amount in measuring process is transformed into cleverly in the allowed band of weld seam, (weld gap regulated quantity is large, throat depth is often held to can be 5 ~ 25mm, namely the deviation accumulation of every root buckling restrained brace allows to reach 50mm), install with the high accuracy that this realizes pin type connection.
The principles of science that the end connection node high accuracy of the split type buckling restrained brace bar of the present invention is installed is in the realm of building construction, the diameter of pin shaft hole is than the diameter only large 2mm of bearing pin, namely buckling restrained brace regulated quantity only has 2mm, the allowable variation installed is very little, and weld seam is just different, weld gap can be 5 ~ 25mm, by the deviation regulating weld gap to make up installation, avoid the reaming in prior art and displacement equal error processing method, by detecting after installation, supporting capacity meets structure design bearing capacity.
The present invention, to be applicable to the core in any cross section, is described for cross section core herein.
The present invention solves the problem by the following technical programs:
The general thought of the mounting method of split type buckling restrained brace bar is that first installation accuracy requires a relatively high pinned connection part, then installs the buckling restrained brace rod member (hereinafter referred to as " supporting rod ") needing solder design, last welding.Concrete installation steps are as follows:
Step one: resolve into three element factory processing
In factory, connection otic placode and change-over panel are welded into connector (buckling restrained brace this kind of component has two); Core, non-cohesive material and packing material, outer sleeve, head plate etc. are assembled into buckling restrained brace rod member (hereinafter referred to as " supporting rod ") (buckling restrained brace this kind of component has).After completing, mail to building site;
Described change-over panel is the rectangular slab of thickness 20mm ~ 130mm, connects otic placode and change-over panel vertical welding.
Step 2: use bearing pin installation connecting element
In building structure, the bearing of buckling restrained brace, the pin shaft hole place that connects otic placode and connector spread solid lubrication oil, with crane gear, two connectors are inserted in two bearings respectively, coaxial with the pin shaft hole being connected otic placode to bearing, then by preliminary for bearing pin jacking pin shaft hole, when bearing pin is installed, need to knock in hammer vibration, and finely tune connector every now and then, ensure penetrating smoothly of bearing pin.Bearing pin is screwed into spacer pin after penetrating and putting in place on bearing pin, in case bearing pin comes off.So far, first connector installation, use the same method installation second, and two erection sequences connected are without hard requirement.Generally, a buckling restrained brace often holds each connector.If bearing pin weight is comparatively large, cannot manually directly lift to move time, can by the lifting of Unwinding chain.
Step 3: supporting rod is installed and prepared
Survey the actual range A between two connectors, the length of buckling restrained brace rod member is B, carries out processing process, make 10mm≤(A-B)≤50mm to supporting rod.
Step 4: welding
With crane gear (hoist engine or Unwinding chain etc.), supporting rod lifting is filled between two connectors, and fine setting is to the roughly equal then spot welding location of weld gap at two ends; After the weld seam at supporting rod two ends is ready, respectively welding is carried out to the weld seam between supporting rod two ends and connector.
Welding sequence: be first soldered wherein one end, then weld the other end, can not simultaneously welding, in order to avoid weld seam shrinks have impact to quality.To note during overhead welding carrying out draught exclusion device.When environment temperature is lower than 20 DEG C, about 200 DEG C should be preheating within the scope of welding place 100mm.If weld seam is double groove weldering, ceramic welding backing should be adopted, to ensure weldquality.
A kind of end connection node of split type buckling restrained brace, comprise and connect otic placode and change-over panel, change-over panel is rectangular slab, one end face of change-over panel is fixedly connected with buckling restrained brace part, the head plate end face of buckling restrained brace part is stretched out in the termination of described core, change-over panel other end be fixedly connected with the one end being connected otic placode is vertical, connect the other end of otic placode and pin shaft hole be set.Described connection otic placode is monolithic or polylith, is positioned at buckling restrained brace part coaxial with the pin shaft hole of the polylith otic placode of one end.
Described connection otic placode is monolithic or polylith, is positioned at buckling restrained brace part coaxial with the pin shaft hole of the polylith otic placode of one end
Compared with prior art, the invention has the beneficial effects as follows: pinned connection belongs to hinged, moment M is null, the bolt connection constraints better effects if of zero is similar to than moment of flexure, realize buckling restrained brace two ends arbitrary section core (containing yi word pattern, cross, H type, type etc.) pin type syndeton, and high-quality is installed, namely structure design intention is achieved, solve again an installation difficult problem for buckling restrained brace two ends pin type node, the function avoiding buckling restrained brace can not give full play to and even lose efficacy, structure initial imperfection is excessive waits security-hidden trouble.On fitting operation, convenient and swift, avoid on-the-spot reaming or cut the workload of moving and filling component and bringing, or repeatedly do over again and bring cost increase.
Accompanying drawing explanation
Fig. 1 is traditional buckling restrained brace graphics.
The buckling restrained brace of the split type syndeton of Fig. 2 the present invention and bearing pin graphics (for cross section core).
Fig. 3 is the present invention's split type buckling restrained brace syndeton front elevational schematic.
Fig. 4 is the present invention's split type buckling restrained brace syndeton schematic top plan view.
Fig. 5 is the present invention's split type buckling restrained brace syndeton sectional view.
Fig. 6 is the graphics that buckling restrained brace split of the present invention becomes three components.
Fig. 7 is the steel truss gallery structure figure of the present invention's buckling restrained brace to be installed.
Fig. 8 is the pinned connection part figure that the present invention installs buckling restrained brace two ends.
Fig. 9 is that the present invention installs buckling restrained brace rod member figure.
In figure, 1-connects otic placode, 2-pin shaft hole, 3-change-over panel, 4-core free-extension section, 5-head plate, 6-outer sleeve, 7-connector (being made up of connection otic placode 1 and change-over panel 3), 8-non-cohesive material and packing material, 9-bearing pin, 10-core (for cross section), 11-buckling restrained brace rod member (non-cohesive material and packing material 8, outer sleeve 6, head plate 5 etc. assemble), 12-steel reinforced concrete structure, 13-steel truss vestibule, the bearing on 14-steel reinforced concrete structure, bearing on 15-steel truss vestibule, 16-spacer pin.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 2-5, a kind of end connection node of split type buckling restrained brace, comprise and connect otic placode 1 and change-over panel 3, change-over panel 3 is thickness 20mm ~ 130mm rectangular slab, one end face of change-over panel 3 is fixedly connected with core 10 termination of buckling restrained brace part 11, head plate 5 end face (being core free-extension section 4) of buckling restrained brace part 11 is stretched out in the termination of described core 10, the other end of change-over panel 3 is fixedly connected with the one end being connected otic placode 1 is vertical, and the other end connecting otic placode 1 arranges pin shaft hole 2.
Connect otic placode 1: the connection otic placode 1 of the every one end of buckling restrained brace can be monolithic or polylith, if polylith, the pin shaft hole of so all otic placodes must be coaxial, and namely porous is coaxial, and guarantee bearing pin connects otic placode by wearing polylith smoothly.The diameter of pin shaft hole is than the large 2mm of bearing pin.The thickness range of otic placode is 10mm ~ 130mm, even as required can be larger.
Change-over panel 2: thickness range is 20mm ~ 130mm, even as required can be larger.When thickness be not less than be 40mm time, according to the regulation of existing " acceptance standard of engineering quality of steel structure " (GB50205), the steel of thickness directional properties need be selected.The length and width degree of change-over panel needs according to design and determines.
Buckling restrained brace rod member 11: be made up of core 10, soap-free emulsion polymeization material and packing material 8, outer sleeve 6, core 10 can be yi word pattern, cross, H type, type uniform section, core 10 thickness of slab is 20mm ~ 80mm, cross section specification, rod member length are determined according to design, and rod member length is generally 3m ~ 12m.Outer sleeve 6 can according to outward appearance, using function and determining, and be generally circle or box-shaped, wall thickness is generally not less than 20mm.Buckling restrained brace rod member is market product, can order as required.
Steel truss vestibule 13 is designed with between two high buildings of highrise building, the steel reinforced concrete structure 12 of steel truss vestibule 13 and high building is except being directly connected, in order to improve shock resistance, also carrying out two ends pin type with buckling restrained brace with corresponding bearing (bearing 14 on steel reinforced concrete structure, the bearing 15 on steel truss vestibule) and being connected.Because the design bearing capacity of buckling restrained brace requires larger, therefore, cross section elected as by core.But cross section core directly cannot carry out pinned connection.As shown in Figure 2, Figure 3, Figure 4, a kind of split type buckling restrained brace syndeton of the present invention need arrange two pieces according to force request at pinned connection place, every one end and connect otic placode 1, connect between otic placode 1 and cross section core and one piece of change-over panel 3 is set, realize the transition of cross section core 10 to pinned connection otic placode 1.As shown in Figure 6, connection otic placode 1, change-over panel 3, buckling restrained brace rod member 11 weld.
As Figure 7-9, the mounting method of the buckling restrained brace of above-mentioned split type two ends pin shaft connection structure comprises:
Step one: a buckling restrained brace split becomes three components to carry out factory process
In factory, connection otic placode 1 and change-over panel 3 are welded into connector 7; Core 10, non-cohesive material and packing material 8, outer sleeve 6, head plate 5 etc. are assembled into buckling restrained brace rod member 11(hereinafter referred to as " supporting rod ").After completing, mail to building site.
Step 2: use bearing pin installation connecting element
Bearing 14 on steel reinforced concrete structure, the bearing 15 on steel truss vestibule, and bearing pin, connector, pin shaft hole 2 place of three spreads solid lubrication oil, with Unwinding chain, the otic placode 1 that connects on connector 7 is inserted in above-mentioned bearing (14 or 15), until all pin shaft holes 2 are coaxial, then uses Unwinding chain by preliminary for bearing pin 9 jacking pin shaft hole, when bearing pin 9 is installed, need to knock in hammer vibration, and finely tune connector 7 every now and then, ensure penetrating smoothly of bearing pin 9.After bearing pin 9 penetrates and puts in place, bearing pin 9 is screwed into spacer pin 16, in case bearing pin 9 comes off.So far, connector 7 installation be connected with steel reinforced concrete structure upper bracket 14, connector 7, two erection sequences connected that the installation that uses the same method is connected with steel truss vestibule upper bracket 15 are without hard requirement.
Step 3: supporting rod is installed and prepared
Survey the actual range A between two connectors 7, then the size B of this range data and buckling restrained brace rod member 11 is compared.If 10mm≤(A-B)≤50mm, directly use crane gear (hoist engine or Unwinding chain etc.) to be mounted between two connectors 7 by supporting rod 8, otherwise process is suitably processed until above-mentioned value range is installed to supporting rod again.
Step 4: welding
With Unwinding chain, supporting rod 8 lifting is filled between two connectors 7, and fine setting is to the roughly equal then spot welding location of weld gap at two ends.After the weld seam at supporting rod two ends is ready, respectively welding is carried out to the weld seam between supporting rod two ends and connector.Welding sequence: be first soldered wherein one end and weld the other end again, can not simultaneously welding, in order to avoid weld seam shrinks have impact to quality.To note during overhead welding carrying out draught exclusion device.When environment temperature is lower than 20 DEG C, about 200 DEG C should be preheating within the scope of welding place 100mm.If weld seam is double groove weldering, ceramic welding backing should be adopted, to ensure weldquality.
Mounting method of the present invention is simple and quick, installation period is shortened dramatically, decreases construction cost, so the present invention has high industrial utilization.
Claims (3)
1. an end connection node mounting method for split type buckling restrained brace, concrete steps are as follows:
Step one: resolve into three element factory processing:
In factory, otic placode (1) will be connected and be welded into connector with change-over panel (3), core (10), non-cohesive material and packing material (8), outer sleeve (6), head plate (5) are assembled into buckling restrained brace rod member (11), after completing, mail to building site;
The square plate that described change-over panel (3) is thickness 20mm ~ 130mm, connects otic placode (1) and change-over panel (3) vertical welding;
Step 2: use bearing pin installation connecting element
In building structure, the pin shaft hole place of the bearing of buckling restrained brace and the connection otic placode (1) of connector (7) spreads solid lubrication oil, two connectors (7) to be inserted respectively in building structure in two bearings with crane gear, coaxial with the pin shaft hole being connected otic placode to bearing, then by preliminary for bearing pin (9) jacking pin shaft hole, when bearing pin (9) are installed, need to knock in hammer vibration, and finely tune connector every now and then, ensure penetrating smoothly of bearing pin (9), after bearing pin (9) penetrates and puts in place, bearing pin (9) is screwed into spacer pin (16), first connector installation, use the same method installation second, two erection sequences connected are without hard requirement,
Step 3: supporting rod is installed and prepared
Survey the actual range A between two connectors (7), the length of buckling restrained brace rod member (11) is B, carries out processing process, make 10mm≤(A-B)≤50mm to supporting rod;
Step 4: welding
With crane gear, (11) lifting of buckling restrained brace rod member is filled between two connectors (7), and fine setting is to the roughly equal then spot welding location of weld gap at two ends; After the weld seam at buckling restrained brace rod member (11) two ends is ready, respectively welding is carried out to the weld seam between buckling restrained brace rod member (11) two ends and connector (7); Welding sequence: be first soldered wherein one end, then weld the other end, can not simultaneously welding, in order to avoid weld seam shrinks have impact to quality;
Described crane gear is hoist engine or Unwinding chain.
2. realize the end connection node of the split type buckling restrained brace of mounting method described in claim 1, it is characterized in that: comprise and connect otic placode (1) and change-over panel (3), change-over panel (3) is thickness 20mm ~ 130mm rectangular slab, one end face of change-over panel (3) is fixedly connected with core (10) termination of buckling restrained brace part (11), head plate (5) end face of buckling restrained brace part (11) is stretched out in the termination of described core (10), the other end of change-over panel (3) is fixedly connected with the one end being connected otic placode (1) is vertical, the other end connecting otic placode (1) arranges pin shaft hole (2), the thickness connecting otic placode (1) is 10mm ~ 130mm.
3. the end connection node of split type buckling restrained brace according to claim 2, is characterized in that: described connection otic placode (1) is monolithic or polylith, is positioned at buckling restrained brace part (11) coaxial with the pin shaft hole of the polylith otic placode of one end.
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| CN201510340397.3A CN104912227B (en) | 2015-06-18 | 2015-06-18 | A kind of end connection node of split type buckling restrained brace bar and installation method |
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| CN106013921A (en) * | 2016-07-13 | 2016-10-12 | 华东建筑设计研究院有限公司 | Buckling-restrained support component |
| CN109455266A (en) * | 2018-10-31 | 2019-03-12 | 共享钢构有限责任公司 | The production method of the production method and mast pin shaft support of otic placode support |
| CN112628469A (en) * | 2020-11-24 | 2021-04-09 | 中国核电工程有限公司 | Design method of double support rods for applying rigid constraint to pipeline and pipeline structure |
| CN113565336A (en) * | 2021-07-31 | 2021-10-29 | 中冶(上海)钢结构科技有限公司 | Movable supporting tire frame column and using method thereof |
| CN115162554A (en) * | 2022-08-31 | 2022-10-11 | 甘肃建筑职业技术学院 | Buckling restrained brace system based on electromagnetic control |
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| CN115162554A (en) * | 2022-08-31 | 2022-10-11 | 甘肃建筑职业技术学院 | Buckling restrained brace system based on electromagnetic control |
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