CN205329890U - Outer tube restraint folding steel plate energy dissipation brace - Google Patents

Abstract

The utility model discloses an outer tube restraint folding steel plate energy dissipation brace, be in including outer tube, setting a core section of thick bamboo, setting in the outer tube are in the end bearing plate of core section of thick bamboo both sides nozzle, set up the outer tube shrouding at outer tube both sides tip, be connected with the cross gusset plate who passes the outer tube shrouding on the bearing plate of end, a core section of thick bamboo is connected gradually by a plurality of power consumption units and forms. The utility model discloses utilize after its good surrender the power consumption ability to reduce the seismic response of building, simple manufacture, the installation of being convenient for, can use the structure antidetonation in the aspect of, alleviate earthquake disaster effectively.

Description

A kind of folding steel plate energy dissipation brace of trocar sheath constraint

Technical field

This utility model belongs to building structure energy dissipation brace field, relates to a kind of folding steel plate energy dissipation brace of trocar sheath constraint。

Background technology

Earthquake disaster has sudden and crushing, threatens the safety of human life's property。For building, owing to building earthquake response is excessive, cause that building occurs losing its phenomenon using function, heavy damage even to collapse。For reducing the disaster that earthquake brings, energy-dissipating and shock-absorbing technology is widely used in structural design。Wherein, the exploitation of buckling restrained brace and application are exactly a representative technology。

Buckling restrained brace is mainly made up of parts such as central layer, trocar sheath, non-cohesive materials。In this technology, central layer is main stress unit, and under geological process, central layer deforms and consumes the energy that earthquake inputs, thus reaching the purpose of protection main body frame。Trocar sheath is by the constraint to central layer, it is prevented that central layer produces lateral buckling affects its energy consumption effect。

But current buckling-restrained energy dissipation brace plastic hinge occurs less, the energy dissipation capacity of monoblock central layer can not be played, the yield point position of uncontrollable central layer, the quantity that uncontrollable plastic hinge occurs, this energy-dissipating property allowing for whole support can not realize accurate control, thus getting a desired effect。

Utility model content

Technical problem: this utility model provides a kind of core cylinder utilizing folding steel plate to be formed to replace central layer as main bearing member, after utilizing the surrender that it is good, energy dissipation capacity reduces the seismic response of building, make simple, it is easily installed, it is applicable to structural seismic aspect, effectively the folding steel plate energy dissipation brace of trocar sheath constraint of earthquake disaster mitigation。

Technical scheme: the folding steel plate energy dissipation brace of trocar sheath of the present utility model constraint includes trocar sheath, it is arranged on the core cylinder in described trocar sheath, it is arranged on the termination bearing plate of described core cylinder both sides nozzle, it is arranged on the trocar sheath shrouding of trocar sheath both side ends, described termination bearing plate is connected to the cruciform gusset plate through trocar sheath shrouding, described core cylinder is connected in sequence by multiple power consumption unit, described power consumption unit includes 4n antarafacial triangle, wherein 2n is first kind triangle, 2n is Equations of The Second Kind triangle, each two first kind vertex angle connects setting, constitute a packet, each two Equations of The Second Kind triangle base connects setting, constitute a packet, the packet of first kind triangle is grouped adjacent connection with Equations of The Second Kind triangle, it is spliced into a cylindrical member, n is power consumption shape limit, unit end face polygon limit number, and n >=3。

Further, in this utility model, described trocar sheath shrouding is provided with " ten " font seam corresponding with cruciform gusset plate。

Further, in this utility model, the size of described termination bearing plate is equivalently-sized with the nozzle of core cylinder。

Further, in this utility model, between described outer sleeve inner wall and core cylinder, there is gap, be wherein filled with non-cohesive material。

Further, in this utility model, described cruciform gusset plate is welded with vertical ribbed stiffener。

Steel plate is adopted the mode of punching press to make it folding line occur by folding steel plate energy dissipation brace, be equivalent to introduce initial imperfection among steel plate, and then the position that plastic hinge occurs can be controlled, make plastic hinge occur near folding line, it is also possible to control the quantity of plastic hinge by controlling the quantity of folding line。Then the Plate Welding after punching press is become tubular, add stability simultaneously, be not susceptible to out-of-plane buckling。

Folding steel plate energy dissipation brace is made up of core cylinder, trocar sheath, termination bearing plate, trocar sheath shrouding, cruciform gusset plate, non-cohesive material, ribbed stiffener；Its SMIS cylinder is to be become tubular by general steel plate through punch welding, and its folded section is made up of the power consumption unit that physical dimension is identical。And power consumption cell cube four sides all adopts identical folding line, its structural form is relatively easy, easy to make；Termination bearing plate is connected with core cylinder, cruciform gusset plate, and load passes to core cylinder uniformly。Trocar sheath restriction power consumption section folding line place occurs that excessive deformation affects the energy-dissipating property of whole support。Trocar sheath shrouding limits the position of trocar sheath, and cruciform gusset plate passes therethrough, and core cylinder and framework is linked together, cruciform gusset plate is welded with ribbed stiffener, it is prevented that cruciform gusset plate compressive buckling。

The folding steel plate energy dissipation brace of trocar sheath of the present utility model constraint, is made up of seven parts, respectively trocar sheath, termination bearing plate, core cylinder, cruciform gusset plate, trocar sheath shrouding, non-cohesive material, ribbed stiffener。

Its core is core cylinder, and core cylinder has embodied a concentrated reflection of the design principle of utility model, and illustrates during for n=4。

Described core cylinder, in Fig. 1 shown in 4, it is that steel plate forms through punch welding, the power consumption unit being made up of one or more simple geometry figures can be formed through punching press, form tubular then through welding, as shown in Figure 6, for ensureing good energy dissipation capacity, just with processing, steel used preferentially adopt mild steel, Q235 or high performance steel, and steel plate thickness used is not preferably greater than 50mm。

Described trocar sheath, in Fig. 1 shown in 1, preferential employing steel are made, it is possible to be round steel pipe, square steel tube, existing steel pipe specification on preferential use market。

Described trocar sheath shrouding adopts the material identical with trocar sheath, and thickness of slab is about 1.5-2.0 times of trocar sheath thickness, is welded in trocar sheath two ends, and in Fig. 1 shown in 2, diameter is identical with trocar sheath external diameter。

Described non-cohesive material is arranged between core cylinder and trocar sheath, and in Fig. 1 shown in 6, non-cohesive material is the layer of silica gel that 2mm is thick, is used for the friction weakening between trocar sheath and core cylinder。

Described termination bearing plate is arranged at core cylinder both ends, in Fig. 1 shown in 3, is cut into by high strength steel plate and the hexahedron of the unit side-anastomosis that consumes energy, is welded in core cylinder two ends。

Described cruciform gusset plate, in Fig. 1 shown in 5, adopts the steel identical with termination bearing plate, is welded on the bearing plate of termination。

Described ribbed stiffener, in Fig. 1 shown in 7, has four roads, and per pass is all made up of four identical triangular steel plate, is welded on cruciform gusset plate。

Beneficial effect: this utility model compared with prior art, has the advantage that

Existing buckling restrained brace adopts trocar sheath to limit the flexing of its central layer, it is impossible to controls central layer and position and the quantity of plastic hinge occurs so that the energy dissipation capacity of existing buckling restrained brace does not reach desirable effect。Creationary in this utility model introduce core cylinder, and trocar sheath is set outside core cylinder, make core cylinder and trocar sheath collaborative work, when core cylinder bearing load contacts with trocar sheath, utilize contacting with each other of trocar sheath and core cylinder, increase the rigidity of core cylinder, improve its ultimate bearing capacity, the hysteretic energy performance of core cylinder can also be improved, thus consume the energy that building is inputted by earthquake better when earthquake simultaneously。

The side of this core cylinder all adopts triangle folding line, folding line form is succinct, it is convenient for punching press to make, when bearing geological process, it is limited primarily by the xial feed that building frame transmits, this xial feed can be pulling force, can also be pressure, when it is subject to load action, it is possible to occur to stretch or compression so that this core cylinder slides in trocar sheath, core cylinder is produced effect of contraction by trocar sheath, prevent core cylinder generation out-of-plane buckling so that it is can only occur to stretch or compression at its length direction, to guarantee its energy-dissipating property。

In this utility model, central layer in existing buckling restrained brace is replaced by the core cylinder formed by folding steel plate by the folding steel plate energy dissipation brace of trocar sheath constraint, optimize its Energy Dissipation Mechanism, increase its hysteretic energy ability under low cycling loads, make steel plate that a series of triangle folding lines to occur by punching press plain plate, thus this core cylinder is extensible, folding line is equivalent to be artificially induced defect, make this be supported on folding line place and occur that plastic hinge absorbs energy, can also control, by the quantity of control folding line, the number that plastic hinge (line) occurs simultaneously, make it have good plasticity distribution, core cylinder can realize many places folding line and plastic hinge occurs, add the energy dissipation capacity of support, and there is flexing when being welded with ribbed stiffener on the cruciform gusset plate of this support to prevent its pressurized。

This utility model produces pre-folding line by folding steel plate, yield line can be produced at folding line place when bearing load, utilize yield line to increase the energy dissipation capacity of this support, sleeve pipe is set in the outside of core cylinder simultaneously, improve the hoop constraint to core cylinder, it is simple to improve rigidity and the ultimate bearing capacity of this support。This support processing and fabricating is simple, easy for installation, has good shock resistance and energy dissipation capacity, is a kind of outstanding energy dissipation component。

Accompanying drawing explanation

Fig. 1 is folding steel plate energy dissipation brace structural map。

Fig. 2 is the trocar sheath shrouding both sides details of construction

Fig. 3 is core cylinder inner member connection figure

Fig. 4 is Section A-A structural map

Fig. 5 is trocar sheath shrouding

Fig. 6 is power consumption unit module structural map, and wherein Fig. 6 a is power consumption unit shaft mapping, and Fig. 6 b is power consumption unit left view, and Fig. 6 c is power consumption unit front view

Fig. 7 is the folding schematic diagram of power consumption unit, and wherein dotted line is indenture

Fig. 8 is power consumption cell node coordinate schematic diagram。

Fig. 9 is power consumption unit size schematic diagram, and wherein Fig. 9 a is the power consumption unit projection to YZ face, and Fig. 9 b is in the congruent triangles of this unit of composition。

Figure has: 1. trocar sheath, 2. trocar sheath shrouding, 3. termination bearing plate, 4. core cylinder, 5. cruciform gusset plate, 6. non-cohesive material, 7. ribbed stiffener。

Detailed description of the invention

Below in conjunction with embodiment and Figure of description, this utility model is further described。

Embodiment 1

Shown in below figure 1 to Fig. 6, this utility model is made up of trocar sheath 1, trocar sheath shrouding 2, termination bearing plate 3, core cylinder 4, cruciform gusset plate 5, non-cohesive material 6, ribbed stiffener 7 seven part。Core cylinder 4 is through being stamped and formed out different simple geometry figures by steel plate, then carries out being welded to tubular。As shown in Figure 6, in the present embodiment, the geometric figure on core cylinder 4 is the combination of isosceles triangle。Fig. 7 is the folding line pattern in this embodiment, and wherein dotted line is indenture, and then two ends carry out welding。As in figure 2 it is shown, what be connected with core cylinder 4 is termination bearing plate 3, termination bearing plate 3 is welded in core cylinder 4 nozzle four limit, and termination bearing plate 3 size is equivalently-sized with core cylinder 4 nozzle。Termination bearing plate 3 opposite side welds with cruciform gusset plate 5, and cruciform gusset plate 5, through trocar sheath shrouding 2, is connected with the structural framing of building, and arranges twice ribbed stiffener 7 on cruciform gusset plate, and this ribbed stiffener is four triangular steel plate, is welded on cruciform gusset plate。As it is shown in figure 5, trocar sheath shrouding 2 has " ten " font seam, in order to cruciform gusset plate 5 passes。Trocar sheath shrouding 2 and trocar sheath 1 adopt Type of Welding to be attached, and trocar sheath 1 inwall and core cylinder 4 maintain a certain distance。Being coated with non-cohesive material on trocar sheath 1 inwall, this non-cohesive material adopts layer of silica gel, and thickness is 2mm。

Embodiment 2

The present embodiment is identical with embodiment 1 remainder, the difference is that trocar sheath 1 pipe is changed to square tube to provide constraint。

Spatial configuration for more clearly from expressor unit, set up rectangular coordinate system in space and the coordinate of each node is described, as shown in Figure 8, zero O is the center of subelement, makes X-axis with the diagonal FH place straight line of tetragon EFGH, and pointing to H from F is positive direction, Z axis is made with this tetragon another diagonal EG place straight line, being pointed to G by E is positive direction, and to cross some O and the straight line vertical with X-axis, Z axis as Y-axis, positive direction be from face ABCD sensing face IJKL.

Power consumption unit size to meet following condition, and (θ is the dihedral angle of △ DCG and △ LKG, α is the angle of △ DCG and XY face, a is the length of side of square ABCD, b is the catercorner length of square EFGH, c is the length of the waist of any one isosceles triangle of composition subelement, d is the height on this isosceles triangle base, and l is the subelement projected length along Y direction):

$b=\sqrt{2}a;c=\sqrt{{\left(\frac{a}{2}\right)}^2+d^2};d=\frac{l}{2cos\mathrm{\α}};\mathrm{\θ}=\mathrm{\π}-2\mathrm{\α}.$

Each node coordinate is:

$\begin{array}{cccc}A\left(\begin{array}{ccc}\frac{a}{2},& -\frac{l}{2},& -\frac{a}{2}\end{array}\right),& B\left(\begin{array}{ccc}-\frac{a}{2},& -\frac{l}{2},& -\frac{a}{2}\end{array}\right),& C\left(\begin{array}{ccc}-\frac{a}{2},& -\frac{l}{2},& \frac{a}{2}\end{array}\right),& D\left(\begin{array}{ccc}\frac{a}{2},& -\frac{l}{2},& \frac{a}{2}\end{array}\right)\end{array}$

$\begin{array}{cccc}E\left(\begin{array}{ccc}0,& 0,& -\frac{b}{2}\end{array}\right),& F\left(\begin{array}{ccc}-\frac{b}{2},& 0,& 0\end{array}\right),& G\left(\begin{array}{ccc}0,& 0,& \frac{b}{2}\end{array}\right),& H\left(\begin{array}{ccc}\frac{b}{2},& 0,& 0\end{array}\right)\end{array}$

$\begin{array}{cccc}I\left(\begin{array}{ccc}\frac{a}{2},& \frac{l}{2},& -\frac{a}{2}\end{array}\right),& J\left(\begin{array}{ccc}-\frac{a}{2},& \frac{l}{2},& -\frac{a}{2}\end{array}\right),& K\left(\begin{array}{ccc}-\frac{a}{2},& \frac{l}{2},& \frac{a}{2}\end{array}\right),& L\left(\begin{array}{ccc}\frac{a}{2},& \frac{l}{2},& \frac{a}{2}\end{array}\right)\end{array}.$

Above-described embodiment is only preferred implementation of the present utility model; it is noted that, for those skilled in the art; under the premise without departing from this utility model principle; some improvement and equivalent replacement can also be made; this utility model claim is improved and is equal to the technical scheme after replacing by these, each falls within protection domain of the present utility model。

Claims (5)

1. the folding steel plate energy dissipation brace of trocar sheath constraint, it is characterized in that, this energy dissipation brace includes trocar sheath (1), it is arranged on the core cylinder (4) in described trocar sheath (1), it is arranged on the termination bearing plate (3) of described core cylinder (4) both sides nozzle, it is arranged on the trocar sheath shrouding (2) of trocar sheath (1) both side ends, described termination bearing plate (3) is connected to the cruciform gusset plate (5) through trocar sheath shrouding (2), described core cylinder (4) is connected in sequence by multiple power consumption unit, described power consumption unit includes 4n antarafacial triangle, wherein 2n is first kind triangle, 2n is Equations of The Second Kind triangle, each two first kind vertex angle connects setting, constitute a packet, each two Equations of The Second Kind triangle base connects setting, constitute a packet, the packet of first kind triangle is grouped adjacent connection with Equations of The Second Kind triangle, it is spliced into a cylindrical member, n is power consumption unit end face polygon edge number, and n >=3。

2. the folding steel plate energy dissipation brace of trocar sheath according to claim 1 constraint, it is characterised in that be provided with " ten " font seam corresponding with cruciform gusset plate (5) on described trocar sheath shrouding (2)。

3. the folding steel plate energy dissipation brace of trocar sheath according to claim 1 and 2 constraint, it is characterised in that the size of described termination bearing plate (3) is equivalently-sized with the nozzle of core cylinder (4)。

4. the folding steel plate energy dissipation brace of trocar sheath according to claim 1 and 2 constraint, it is characterised in that have gap between described trocar sheath (1) inwall and core cylinder (4), be wherein filled with non-cohesive material (6)。

5. the folding steel plate energy dissipation brace of trocar sheath according to claim 1 and 2 constraint, it is characterised in that be welded with vertical ribbed stiffener (7) on described cruciform gusset plate (5)。