CN105201260B - A kind of steel construction damping dissipative devices and design method provided with viscoelastic damper - Google Patents

A kind of steel construction damping dissipative devices and design method provided with viscoelastic damper Download PDF

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CN105201260B
CN105201260B CN201510658421.8A CN201510658421A CN105201260B CN 105201260 B CN105201260 B CN 105201260B CN 201510658421 A CN201510658421 A CN 201510658421A CN 105201260 B CN105201260 B CN 105201260B
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steel plate
frame
viscoelastic
shear wall
shear
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彭晓彤
林晨
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University of Jinan
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Abstract

本发明提供了一种设有粘弹性阻尼器的钢结构减震耗能体系及设计方法,属于建筑抗震领域。该设有粘弹性阻尼器的钢结构减震耗能体系包括框架和设置在框架内的粘弹性阻尼器和波纹钢板剪力墙;所述粘弹性阻尼器的上部和框架的上部连接,所述粘弹性阻尼器的下部与所述波纹钢板剪力墙连接;所述波纹钢板剪力墙的下部通过连接件与框架的下部连接,两侧与框架分离。

The invention provides a steel structure damping and energy consumption system provided with a viscoelastic damper and a design method, belonging to the field of building anti-seismic. The steel structure damping energy dissipation system provided with viscoelastic dampers includes a frame, a viscoelastic damper and a corrugated steel plate shear wall arranged in the frame; the upper part of the viscoelastic damper is connected to the upper part of the frame, and the The lower part of the viscoelastic damper is connected to the corrugated steel plate shear wall; the lower part of the corrugated steel plate shear wall is connected to the lower part of the frame through a connector, and the two sides are separated from the frame.

Description

一种设有粘弹性阻尼器的钢结构减震耗能体系及设计方法A shock-absorbing energy-dissipating system and design method for a steel structure equipped with a viscoelastic damper

技术领域technical field

本发明属于建筑抗震领域,具体涉及一种设有粘弹性阻尼器的钢结构减震耗能体系及设计方法。The invention belongs to the field of anti-seismic buildings, and in particular relates to a steel structure anti-seismic energy consumption system provided with a viscoelastic damper and a design method.

背景技术Background technique

现代建筑中,对于传统的钢板剪力墙抗侧力体系,因其具有承载力高、延性好、耗能能力强等优点在实际工程中应用广泛。为了消除在小位移下对传统钢板剪力墙的损害,将粘弹性阻尼器应用于钢框架中,与此同时引入位移极限机理,使粘弹性阻尼器在小位移下产生剪切滞回变形,耗散输入的地震能量,减少结构的震动反应。此外为了充分利用钢板材料的强度和延性,必须解决薄钢板剪力墙的平面外弹性失稳问题,在钢框架中布置波纹钢板剪力墙,通过其面外的几何形状提供了较大的面外刚度,使自身不易发生屈曲,抗剪性能强于平钢板,提高了墙体的屈曲性能。In modern buildings, the traditional steel plate shear wall anti-lateral force system is widely used in practical engineering because of its advantages of high bearing capacity, good ductility, and strong energy dissipation capacity. In order to eliminate the damage to the traditional steel plate shear wall under small displacement, the viscoelastic damper is applied to the steel frame, and at the same time, the displacement limit mechanism is introduced to make the viscoelastic damper produce shear hysteretic deformation under small displacement, Dissipate the incoming seismic energy and reduce the vibration response of the structure. In addition, in order to make full use of the strength and ductility of steel plate materials, the problem of out-of-plane elastic instability of thin steel plate shear walls must be solved. Arranging corrugated steel plate shear walls in steel frames provides a larger surface area through its out-of-plane geometry. The outer rigidity makes it less prone to buckling, and the shear resistance is stronger than that of flat steel plates, which improves the buckling performance of the wall.

发明内容Contents of the invention

本发明的目的在于解决上述现有技术中存在的难题,提供一种设有粘弹性阻尼器的钢结构减震耗能体系及设计方法,消除在小位移下对传统钢板剪力墙的损害,其次用波纹钢板代替平钢板来增强结构的抗剪承载力,解决平钢板剪力墙的出平面弹性失稳问题,更好的发挥钢板材料的强度和延性。The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, to provide a steel structure damping energy consumption system and design method provided with a viscoelastic damper, to eliminate the damage to the traditional steel plate shear wall under small displacement, Secondly, the corrugated steel plate is used instead of the flat steel plate to enhance the shear bearing capacity of the structure, solve the problem of plane elastic instability of the flat steel plate shear wall, and better exert the strength and ductility of the steel plate material.

本发明是通过以下技术方案实现的:The present invention is achieved through the following technical solutions:

一种设有粘弹性阻尼器的钢结构减震耗能体系,包括框架和设置在框架内的粘弹性阻尼器和波纹钢板剪力墙;A shock-absorbing and energy-dissipating system of a steel structure provided with a viscoelastic damper, comprising a frame, a viscoelastic damper arranged in the frame, and a corrugated steel plate shear wall;

所述粘弹性阻尼器的上部和框架的上部连接,所述粘弹性阻尼器的下部与所述波纹钢板剪力墙连接;The upper part of the viscoelastic damper is connected to the upper part of the frame, and the lower part of the viscoelastic damper is connected to the corrugated steel plate shear wall;

所述波纹钢板剪力墙的下部通过连接件与框架的下部连接,两侧与框架分离。The lower part of the corrugated steel plate shear wall is connected to the lower part of the frame through a connecting piece, and the two sides are separated from the frame.

作为对本技术方案的进一步限定,所述框架包括纵向设置的两根框架柱和横向设置的两根框架梁,每根框架梁的一端均与一根框架柱连接,另一端均与另一根框架柱连接;As a further limitation to the technical solution, the frame includes two vertically arranged frame columns and two horizontally arranged frame beams, one end of each frame beam is connected to a frame column, and the other end is connected to another frame column connection;

所述粘弹性阻尼器的上部与上方的框架梁连接,下部与所述波纹钢板剪力墙连接,所述波纹钢板剪力墙的下部与下方的框架梁通过连接件连接;The upper part of the viscoelastic damper is connected to the upper frame beam, the lower part is connected to the corrugated steel plate shear wall, and the lower part of the corrugated steel plate shear wall is connected to the lower frame beam through a connector;

所述波纹钢板剪力墙的两侧与两根框架柱均分离。Both sides of the corrugated steel plate shear wall are separated from the two frame columns.

作为对本技术方案的进一步限定,所述粘弹性阻尼器包括一组粘弹性阻尼装置,每个粘弹性阻尼装置包括内钢板和U形的外钢板,所述内钢板的一部分插入到外钢板的U形结构内,在内钢板的两侧与外钢板之间均设有粘弹性材料,在所述外钢板、粘弹性材料和内钢板上开有通孔,栓钉穿过该通孔;所述栓钉的外圆柱面与内钢板上的通孔的内壁紧密连接,与外钢板的通孔的内壁之间有缝隙;在所述栓钉穿出外钢板的两端处设有垫片。As a further limitation of the technical solution, the viscoelastic damper includes a set of viscoelastic damping devices, each viscoelastic damping device includes an inner steel plate and a U-shaped outer steel plate, and a part of the inner steel plate is inserted into the U of the outer steel plate. In the shaped structure, a viscoelastic material is arranged between both sides of the inner steel plate and the outer steel plate, and a through hole is opened on the outer steel plate, the viscoelastic material and the inner steel plate, and the peg passes through the through hole; The outer cylindrical surface of the stud is closely connected with the inner wall of the through hole on the inner steel plate, and there is a gap between the inner wall of the through hole of the outer steel plate; gaskets are provided at both ends where the stud passes through the outer steel plate.

在所述内钢板伸出外钢板的部分开有螺栓孔,用于与波纹钢板剪力墙连接。A bolt hole is provided at the part where the inner steel plate protrudes from the outer steel plate, and is used for connecting with the corrugated steel plate shear wall.

所述粘弹性材料和内钢板的两侧面以及和外钢板的内侧面均是通过高温高压硫化的方法粘合成为一个整体;The viscoelastic material and the two sides of the inner steel plate and the inner side of the outer steel plate are bonded into a whole by high temperature and high pressure vulcanization;

作为对本技术方案的进一步限定,每个所述粘弹性阻尼装置的上部均通过焊接的方式与上方框架梁的下翼缘连接,下部均通过在所述螺栓孔内安装的螺栓将所述粘弹性阻尼装置与波纹钢板剪力墙连接。As a further limitation to the technical solution, the upper part of each viscoelastic damping device is connected to the lower flange of the upper frame beam by welding, and the lower part connects the viscoelastic The damping device is connected with the corrugated steel plate shear wall.

作为对本技术方案的进一步限定,所述波纹钢板剪力墙为横置蜂窝型结构。As a further limitation of the technical solution, the corrugated steel plate shear wall is a horizontal honeycomb structure.

作为对本技术方案的进一步限定,所述框架梁和框架柱均采用工字型钢。As a further limitation of the technical solution, the frame beams and frame columns are all made of I-shaped steel.

作为对本技术方案的进一步限定,在所述框架梁的两端分别焊接有端板,通过节点螺栓将所述端板与框架柱连接。As a further limitation of the technical solution, end plates are respectively welded at both ends of the frame beam, and the end plates are connected to the frame columns through node bolts.

所述连接件为鱼尾板。The connecting piece is a fishplate.

一种设有粘弹性阻尼器的钢结构减震耗能体系的设计方法,包括:A design method for a steel structure shock-absorbing energy-dissipating system provided with a viscoelastic damper, comprising:

(1)通过受力分析计算,确定所述粘弹性材料的厚度hV和单层剪切面积Ad(1) determine the thickness h V and the single layer shear area A d of the viscoelastic material through force analysis and calculation;

(3)确定波纹钢板剪力墙的波纹尺寸和钢板厚度t;(3) Determine the corrugation size and steel plate thickness t of the corrugated steel plate shear wall;

(3)将所述波纹钢板剪力墙的下部通过连接件与下方的框架梁连接,再将所述粘弹性阻尼器的上部与上方框架梁的下翼缘焊接固定,下部通过螺栓与波纹钢板剪力墙的上部连接。(3) The lower part of the corrugated steel plate shear wall is connected with the lower frame beam through the connector, and then the upper part of the viscoelastic damper is welded and fixed to the lower flange of the upper frame beam, and the lower part is connected to the corrugated steel plate by bolts The upper connection of the shear wall.

所述步骤(1)是这样实现的:Described step (1) is realized like this:

所述粘弹性材料的厚度hV的计算公式为:hV=dy//0.05;The formula for calculating the thickness h V of the viscoelastic material is: h V = d y //0.05;

所述粘弹性材料的单层剪切面积Ad的计算公式为: The calculation formula of the monolayer shear area A d of the viscoelastic material is:

式中,Vi为框架第i层的层间剪力;G′为粘弹性材料的储存剪切模量,取1200KN/m2;ud为粘弹性阻尼器的水平位移,取粘弹性阻尼器的屈服位移值dy,根据确定dy,dsy为结构层间屈服位移限值;m为第i层布置粘弹性阻尼器的数量。In the formula, V i is the interstory shear force of the i-th layer of the frame; G′ is the storage shear modulus of the viscoelastic material, which is taken as 1200KN/m 2 ; u d is the horizontal displacement of the viscoelastic damper, which is taken as the viscoelastic damping The yield displacement value d y of the device, according to Determine d y , d sy is the yield displacement limit between layers of the structure; m is the number of viscoelastic dampers arranged on the i-th layer.

所述步骤(2)是这样实现的:Described step (2) is realized like this:

所述波纹钢板剪力墙的波纹尺寸包括波长、波高、水平段与斜段长度比以及角度,具体如下:The corrugation size of the corrugated steel plate shear wall includes wavelength, wave height, horizontal section and oblique section length ratio and angle, specifically as follows:

波长q=2(a+b)的取值范围是:150mm~300mm;The value range of wavelength q=2(a+b) is: 150mm~300mm;

波高d的取值范围是:30mm~100mm;The value range of wave height d is: 30mm~100mm;

水平段与斜段长度比a/c的取值范围:1~2;The value range of the length ratio a/c between the horizontal section and the inclined section: 1~2;

角度θ的取值范围:30°~60°;Value range of angle θ: 30°~60°;

所述钢板厚度的取值范围计算公式为: The formula for calculating the value range of the thickness of the steel plate is:

式中,t为钢板厚度;rR为抗震分项系数,取1.2;l为钢板宽度;fy为钢材抗拉强度设计值;钢板的剪切屈服应力ω=max{a,c},a为波纹水平段长度,b是指波纹斜段的水平投影长度,c为波纹斜段长度;υ为泊松比(取0.3);Kl局部剪切屈曲破坏影响系数;E为材料弹性模量。In the formula, t is the thickness of the steel plate; r R is the partial coefficient of seismic resistance, which is taken as 1.2; l is the width of the steel plate; f y is the design value of the tensile strength of the steel; the shear yield stress of the steel plate ω=max{a, c}, a is the length of the horizontal section of the corrugation, b is the horizontal projection length of the oblique section of the corrugation, c is the length of the oblique section of the corrugation; υ is Poisson's ratio (take 0.3); K l local shear buckling Destruction influence coefficient; E is the elastic modulus of the material.

所述钢板厚度的取值范围:1.6mm~6mm。The value range of the thickness of the steel plate: 1.6 mm to 6 mm.

与现有技术相比,本发明的有益效果是:本发明将粘弹性阻尼器与钢框架波纹钢板剪力墙相结合,钢框架作为结构边缘构件承担全部竖向荷载和倾覆弯矩,粘弹性阻尼器与波纹钢板剪力墙内置于钢框架内承担全部侧向力,可以大幅度提升框架的抗侧刚度,减小结构本身的侧移;在抗震过程中首先由粘弹性阻尼器通过粘弹性材料的剪切滞回变形来抵抗小震或强风荷载(第一阶段),在中震或强震荷载作用下,粘弹性阻尼器不再产生剪切变形而耗能,而是将侧向力传递给横置的波纹钢板剪力墙,通过波纹钢板剪力墙来消耗地震能量(第二阶段),达到减震耗能的目的。Compared with the prior art, the beneficial effect of the present invention is: the present invention combines the viscoelastic damper with the steel frame corrugated steel plate shear wall, and the steel frame as the structural edge member bears all vertical loads and overturning moments, and the viscoelastic The damper and the corrugated steel plate shear wall are built into the steel frame to bear all the lateral force, which can greatly improve the lateral stiffness of the frame and reduce the lateral movement of the structure itself; The shear hysteretic deformation of the material is used to resist the small earthquake or strong wind load (the first stage). Under the moderate earthquake or strong earthquake load, the viscoelastic damper no longer produces shear deformation and consumes energy, but the lateral force It is transmitted to the horizontal corrugated steel plate shear wall, and the seismic energy is consumed through the corrugated steel plate shear wall (the second stage), so as to achieve the purpose of shock absorption and energy consumption.

附图说明Description of drawings

图1为本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.

图2-1为图1中A处的主视图。Figure 2-1 is the front view of A in Figure 1.

图2-2为图1中A处的第一立体结构示意图。Fig. 2-2 is a schematic diagram of the first three-dimensional structure at point A in Fig. 1 .

图2-3为图1中A处的第二结构示意图。2-3 are schematic diagrams of the second structure at point A in FIG. 1 .

图3为图1中B处详图。Fig. 3 is a detailed view of B in Fig. 1 .

图4-1为图1中C处第一结构示意图。Fig. 4-1 is a schematic diagram of the first structure at C in Fig. 1 .

图4-2为图1中C处第二结构示意图。Fig. 4-2 is a schematic diagram of the second structure at C in Fig. 1 .

图4-3为图1中C处的螺栓。Figure 4-3 is the bolt at C in Figure 1.

图5-1为粘弹性阻尼器的第一受力分析图。Figure 5-1 is the first force analysis diagram of the viscoelastic damper.

图5-2为粘弹性阻尼器的第二受力分析图。Figure 5-2 is the second force analysis diagram of the viscoelastic damper.

图6为结构等代示意图。Figure 6 is a schematic diagram of structural equivalents.

图中,1-框架柱,2-框架梁,3-鱼尾板,4-端板,5-节点螺栓,B-波纹钢板剪力墙,C-粘弹性阻尼器。In the figure, 1-frame column, 2-frame beam, 3-fishplate, 4-end plate, 5-node bolt, B-corrugated steel plate shear wall, C-viscoelastic damper.

具体实施方式detailed description

下面结合附图对本发明作进一步详细描述:Below in conjunction with accompanying drawing, the present invention is described in further detail:

如图1至图4-3所示,本发明包括框架和设置在框架内的粘弹性阻尼器C和波纹钢板剪力墙B;As shown in Figures 1 to 4-3, the present invention includes a frame, a viscoelastic damper C and a corrugated steel plate shear wall B arranged in the frame;

所述粘弹性阻尼器C的上部和框架的上部连接,所述粘弹性阻尼器C的下部与所述波纹钢板剪力墙B连接;The upper part of the viscoelastic damper C is connected to the upper part of the frame, and the lower part of the viscoelastic damper C is connected to the corrugated steel plate shear wall B;

所述波纹钢板剪力墙B的下部通过连接件与框架的下部连接,两侧与框架分离。The lower part of the corrugated steel plate shear wall B is connected to the lower part of the frame through a connector, and the two sides are separated from the frame.

所述框架包括纵向设置的两根框架柱1和横向设置的两根框架梁2,每根框架梁2的一端均与一根框架柱1连接,另一端均与另一根框架柱1连接;The frame includes two frame columns 1 arranged vertically and two frame beams 2 arranged horizontally, one end of each frame beam 2 is connected to a frame column 1, and the other end is connected to another frame column 1;

所述粘弹性阻尼器C的上部与上方的所述框架梁2连接,下部与所述波纹钢板剪力墙B连接,所述波纹钢板剪力墙B的下部与下方的所述框架梁2通过连接件连接;The upper part of the viscoelastic damper C is connected to the frame beam 2 above, and the lower part is connected to the corrugated steel plate shear wall B, and the lower part of the corrugated steel plate shear wall B passes through the frame beam 2 below. connector connection;

所述波纹钢板剪力墙B的两侧与两根框架柱1均分离。Both sides of the corrugated steel plate shear wall B are separated from the two frame columns 1 .

所述波纹钢板剪力墙B为横置蜂窝型结构;The corrugated steel plate shear wall B is a horizontal honeycomb structure;

所述框架梁2和框架柱1均采用工字型钢;Both the frame beam 2 and the frame column 1 are made of I-shaped steel;

在所述框架梁2的两端分别焊接有端板4,通过节点螺栓5将所述端板4与框架柱1连接;End plates 4 are respectively welded at both ends of the frame beam 2, and the end plates 4 are connected to the frame columns 1 through node bolts 5;

所述连接件为鱼尾板3。The connecting piece is a fishplate 3 .

所述钢框架包括框架柱1和框架梁2,框架柱1和框架梁2的连接方式采用两端外伸端板式连接,即框架梁2与端板4通过焊接连接,端板4与框架柱1通过节点螺栓5进行连接;所述粘弹性阻尼器C上部与框架梁2下翼缘通过焊接连接,下部与波纹钢板剪力墙B通过螺栓连接,波纹钢板剪力墙B与焊接于框架梁2的鱼尾板3(鱼尾板3起到连接波纹钢板剪力墙B与框架梁2的作用,同时起到传递荷载的作用)通过焊接连接,波纹钢板剪力墙B两侧与框架柱1分离。The steel frame includes a frame column 1 and a frame beam 2, and the frame column 1 and the frame beam 2 are connected by end-plate connections at both ends, that is, the frame beam 2 and the end plate 4 are connected by welding, and the end plate 4 and the frame column 1 is connected by node bolts 5; the upper part of the viscoelastic damper C is welded to the lower flange of the frame beam 2, the lower part is connected to the corrugated steel plate shear wall B by bolts, and the corrugated steel plate shear wall B is welded to the frame beam The fishplate 3 of 2 (the fishplate 3 plays the role of connecting the corrugated steel plate shear wall B and the frame beam 2, and at the same time plays the role of transmitting the load) is connected by welding, and the two sides of the corrugated steel plate shear wall B are connected with the frame column 1 separation.

所述粘弹性阻尼器C包括一组粘弹性阻尼装置,粘弹性阻尼装置具体结构如图4所示,由U形的外钢板42、内钢板41、粘弹性材料43、栓钉45、垫片44与螺栓孔45组成。所述内钢板41的一部分插入到外钢板42的U形结构内,在内钢板41的两侧与外钢板42之间均设有粘弹性材料43,粘弹性材料43和钢板是通过高温高压硫化的方法使其粘合成为一个整体;在外钢板42、粘弹性材料43和内钢板41上开有通孔,栓钉45穿过通孔;栓钉45的外圆柱面与内钢板41上的通孔内壁紧密连接,而与外钢板42的通孔内壁之间留有一定缝隙46;在所述栓钉45穿出外钢板42的两端处设有垫片44。每个所述粘弹性阻尼装置的上部均通过焊接的方式与上方的所述框架梁2的下翼缘连接,在所述内钢板41伸出所述外钢板42的部分开有螺栓孔45,用于与所述波纹钢板剪力墙B连接。Described viscoelastic damper C comprises one group of viscoelastic damping device, and the specific structure of viscoelastic damping device is as shown in Figure 4, by U-shaped outer steel plate 42, inner steel plate 41, viscoelastic material 43, peg 45, spacer 44 forms with bolt hole 45. A part of the inner steel plate 41 is inserted into the U-shaped structure of the outer steel plate 42, and a viscoelastic material 43 is provided between both sides of the inner steel plate 41 and the outer steel plate 42, and the viscoelastic material 43 and the steel plate are vulcanized by high temperature and high pressure. The method makes it bonded into a whole; on the outer steel plate 42, the viscoelastic material 43 and the inner steel plate 41, there are through holes, and the pegs 45 pass through the through holes; The inner wall of the hole is closely connected, and there is a certain gap 46 between the inner wall of the through hole of the outer steel plate 42 ; gaskets 44 are provided at the two ends where the peg 45 passes through the outer steel plate 42 . The upper part of each viscoelastic damping device is connected to the lower flange of the upper frame beam 2 by welding, and a bolt hole 45 is opened at the part where the inner steel plate 41 protrudes from the outer steel plate 42, Used to connect with the corrugated steel plate shear wall B.

粘弹性材料43和钢板是通过高温高压硫化的方法使其粘合成为一个整体,栓钉45是为了引入位移极限机理而设置的,栓钉45的外圆柱面与内钢板上的通孔内壁紧密连接,由粘结剂粘结固定于内钢板41通孔内壁上,而与外钢板42的通孔内壁之间留有一定缝隙46,预留缝隙的取值应小于粘弹性材料的屈服位移,在位移小于预留缝隙46时通过粘弹性材料43的剪切变形来耗散能量,当位移超过预留缝隙时,栓钉45的外圆柱面与外钢板42接触,粘弹性材料43不能产生剪切变形,而是通过栓钉45将荷载传递给波纹钢板剪力墙B。The viscoelastic material 43 and the steel plate are bonded together as a whole through high-temperature and high-pressure vulcanization. The peg 45 is set to introduce the displacement limit mechanism. The outer cylindrical surface of the peg 45 is closely connected to the inner wall of the through hole on the inner steel plate. The connection is bonded and fixed on the inner wall of the through hole of the inner steel plate 41 by an adhesive, and there is a certain gap 46 between the inner wall of the through hole of the outer steel plate 42, and the value of the reserved gap should be smaller than the yield displacement of the viscoelastic material. When the displacement is less than the reserved gap 46, the energy is dissipated through the shear deformation of the viscoelastic material 43. When the displacement exceeds the reserved gap, the outer cylindrical surface of the stud 45 is in contact with the outer steel plate 42, and the viscoelastic material 43 cannot generate shear. shear deformation, but the load is transmitted to the corrugated steel plate shear wall B through the stud 45.

粘弹性材料和钢板是通过高温高压硫化的方法使其粘合成为一个整体,栓钉是为了引入位移极限机理而设置的,栓钉的外圆柱面与内钢板上的通孔内壁紧密连接,由粘结剂粘结固定于内钢板通孔内壁上,而与外部U型钢板的通孔内壁之间留有一定缝隙,预留缝隙的取值应小于粘弹性材料的屈服位移dy,在位移小于预留缝隙时通过粘弹性材料的剪切变形来耗散能量,当位移超过预留缝隙时,栓钉的外圆柱面与外钢板接触,粘弹性材料不能产生剪切变形,而是通过栓钉将荷载传递给波纹钢板剪力墙。The viscoelastic material and the steel plate are bonded together as a whole by high temperature and high pressure vulcanization. The stud is set to introduce the displacement limit mechanism. The outer cylindrical surface of the stud is closely connected with the inner wall of the through hole on the inner steel plate. The adhesive is bonded and fixed on the inner wall of the through hole of the inner steel plate, and there is a certain gap between the inner wall of the through hole of the outer U-shaped steel plate. The value of the reserved gap should be less than the yield displacement dy of the viscoelastic material. When the displacement is less than When the gap is reserved, the energy is dissipated through the shear deformation of the viscoelastic material. When the displacement exceeds the reserved gap, the outer cylindrical surface of the stud is in contact with the outer steel plate, and the viscoelastic material cannot produce shear deformation, but through the stud Transferring loads to corrugated steel plate shear walls.

所述粘弹性材料43采用高分子聚合物,大部分为丙烯酸聚合物或玻璃态物质,可以采用天然橡胶作为粘弹性材料。The viscoelastic material 43 is made of high molecular polymers, most of which are acrylic polymers or glassy substances, and natural rubber can be used as the viscoelastic material.

按基于承载力的设计方法,粘弹性阻尼器和波纹钢板剪力墙的选取是依据其在地震中所承受的荷载来确定的。当荷载小于粘弹性阻尼器所承受的屈服力时,作用在框架各层的地震力通过粘弹性材料的剪切变形来耗散.当荷载超过粘弹性阻尼器的屈服力时,由于位移极限机理的存在,粘弹性阻尼器不再剪切耗能,而是通过波纹钢板剪力墙来耗散地震能量。According to the design method based on bearing capacity, the selection of viscoelastic dampers and corrugated steel plate shear walls is determined according to the loads they will bear in the earthquake. When the load is less than the yield force of the viscoelastic damper, the seismic force acting on each layer of the frame is dissipated through the shear deformation of the viscoelastic material. When the load exceeds the yield force of the viscoelastic damper, due to the displacement limit mechanism The viscoelastic damper no longer consumes shear energy, but dissipates seismic energy through the corrugated steel plate shear wall.

(1)首先粘弹性阻尼器在地震荷载作用下的受力如图5-1和图5-2所示,通过受力分析计算,确定粘弹性材料的厚度和剪切面积的大小,选择适当的粘弹性阻尼器应用到结构中。(1) First, the force of the viscoelastic damper under the earthquake load is shown in Figure 5-1 and Figure 5-2. Through force analysis and calculation, the thickness of the viscoelastic material and the size of the shear area are determined, and an appropriate selection is made. The viscoelastic damper is applied to the structure.

(2)其次确定波纹钢板剪力墙的波纹尺寸和钢板厚度,将波纹钢板剪力墙等效成如图6所示的简化模型。(2) Next, determine the corrugated size and steel plate thickness of the corrugated steel plate shear wall, and equivalent the corrugated steel plate shear wall to a simplified model as shown in Figure 6.

一、粘弹性材料的剪切面积Ad和厚度hV的设计方法:1. Design method of shear area A d and thickness h V of viscoelastic material:

1、在地震荷载作用下,粘弹性阻尼器的屈服力(mPd)应小于框架结构的层间剪力Vi(通过计算求得并作为已知量):1. Under the earthquake load, the yield force (mP d ) of the viscoelastic damper should be less than the interstory shear force V i of the frame structure (obtained by calculation and used as a known quantity):

mPd≤Vi (1)mP d ≤ V i (1)

式中,Pd为单个粘弹性阻尼器的屈服力;where P d is the yield force of a single viscoelastic damper;

Vi为框架第i层的层间剪力;V i is the interstory shear force of the i-th layer of the frame;

m为第i层布置粘弹性阻尼器的数量,其值通过公式m=Adi/Ad确定,其中Adi为m=1时第i层粘弹性阻尼器总的单层受剪面积,Ad为单个粘弹性阻尼器的单层受剪面积(见图5-1),并且每个阻尼器有两个剪切面。m is the number of viscoelastic dampers arranged in the i-th layer, and its value is determined by the formula m=A di /A d , where A di is the total single-layer shear area of the viscoelastic damper in the i-th layer when m=1, A d is the single-layer shear area of a single viscoelastic damper (see Figure 5-1), and each damper has two shear surfaces.

2、公式(1)中的Pd可通过如下两式计算得到,参照粘弹性阻尼器的受力图(见图5-1):2. P d in formula (1) can be calculated by the following two formulas, referring to the force diagram of the viscoelastic damper (see Figure 5-1):

Pd=2·τ·Ad (2)P d =2·τ·A d (2)

式中,τ为粘弹性材料的剪切应力(见图5-1);In the formula, τ is the shear stress of the viscoelastic material (see Figure 5-1);

Ad为粘弹性材料的单层受剪面积(见图5-2);A d is the single-layer shear area of the viscoelastic material (see Figure 5-2);

Kd为阻尼器的刚度系数;K d is the stiffness coefficient of the damper;

G′为粘弹性材料的储存剪切模量,一般取1200KN/m2G' is the storage shear modulus of the viscoelastic material, generally taken as 1200KN/m 2 ;

ud为粘弹性阻尼器的水平位移(见图5-1),此处取阻尼器的屈服位移值dy,根据《建筑抗震设计规范》中公式(12.3.6-2)确定dy,式中,dsy为结构层间屈服位移限值;u d is the horizontal displacement of the viscoelastic damper (see Figure 5-1), where the yield displacement value d y of the damper is taken, according to the formula (12.3.6-2) in "Code for Seismic Design of Buildings" Determine d y , where d sy is the limit value of yield displacement between layers of the structure;

hV为竖向相邻两片剪切钢板间粘弹性材料层厚度(见图5-1),为满足抗震要求,粘弹性材料层厚度hv应满足tanγ:粘弹性材料剪切角正切值,取tanγ=1。因此根据水平剪切应变来确定粘弹性材料层的厚度,即hV=dy/0.05满足抗震要求。h V is the thickness of the viscoelastic material layer between two vertically adjacent shear steel plates (see Figure 5-1). In order to meet the seismic requirements, the thickness h v of the viscoelastic material layer should satisfy tanγ: Tangent value of shear angle of viscoelastic material, take tanγ=1. Therefore, according to the horizontal shear strain To determine the thickness of the viscoelastic material layer, that is, h V =d y /0.05 to meet the seismic requirements.

3、根据公式(1)和(3)可得第i层粘弹性材料的单层受剪面积Ad(见图5-2)的计算公式,即3. According to the formulas (1) and (3), the calculation formula of the single-layer shear area A d (see Figure 5-2) of the i-th layer of viscoelastic material can be obtained, namely

二、波纹钢板尺寸的设计步骤如下:2. The design steps of corrugated steel plate size are as follows:

实际工程中波纹钢板的常用尺寸如下(见图3):The commonly used dimensions of corrugated steel plates in actual engineering are as follows (see Figure 3):

波长q=2(a+b)的取值范围:150mm~300mm;The value range of wavelength q=2(a+b): 150mm~300mm;

波高d的取值范围:30mm~100mm;The value range of wave height d: 30mm~100mm;

水平段与斜段长度比a/c的取值范围:1~2;The value range of the length ratio a/c between the horizontal section and the inclined section: 1~2;

板厚t的取值范围:1.6mm~6mm;The value range of plate thickness t: 1.6mm~6mm;

角度θ的取值范围:30°~60°。The value range of angle θ: 30°~60°.

为了发挥波纹钢板材料的强度和延性,保证其有足够的耗能能力,波纹钢板所提供的抗剪承载力(τ·l·t)应大于水平地震力(rR·Vi),即In order to exert the strength and ductility of the corrugated steel plate material and ensure its sufficient energy dissipation capacity, the shear bearing capacity (τ·l·t) provided by the corrugated steel plate should be greater than the horizontal seismic force (r R ·V i ), namely

τ·l·t>rR·Vi (5)τ·l·t>r R ·V i (5)

式中,rR为抗震分项系数,取1.2;In the formula, r R is the sub-item coefficient of seismic resistance, which is taken as 1.2;

l为钢板宽度;l is the width of the steel plate;

t为钢板厚度;t is the thickness of the steel plate;

τ为波纹钢板剪力墙剪切应力,此时τ取钢板的剪切屈服应力fy为钢材抗拉强度设计值。τ is the shear stress of the corrugated steel plate shear wall, at this time τ is the shear yield stress of the steel plate f y is the design value of steel tensile strength.

由(5)式确定波纹钢板的最小厚度:The minimum thickness of the corrugated steel plate is determined by formula (5):

波纹钢板剪力墙的局部剪切屈曲弹性承载力计算公式:Calculation formula of local shear buckling elastic bearing capacity of corrugated steel plate shear wall:

式中,Kl局部剪切屈曲破坏影响系数;In the formula, K l local shear buckling failure influence coefficient;

E为材料弹性模量;E is the modulus of elasticity of the material;

υ为泊松比(取0.3);υ is Poisson's ratio (take 0.3);

ω=max{a,c},a为波纹水平段长度,c为波纹斜段长度(见图5)。ω=max{a, c}, a is the length of the horizontal section of the corrugation, and c is the length of the oblique section of the corrugation (see Figure 5).

以波纹钢板的弹性局部剪切屈曲作为极限状态来确定波纹钢板的最大厚度,即τl<τy,因此波纹钢板的最大厚度计算公式为:The maximum thickness of the corrugated steel plate is determined by taking the elastic local shear buckling of the corrugated steel plate as the limit state, that is, τ ly , so the formula for calculating the maximum thickness of the corrugated steel plate is:

根据公式(6)和(8)可得波纹钢板厚度的取值范围,即According to formulas (6) and (8), the value range of corrugated steel plate thickness can be obtained, namely

本发明在施工方面比较简单快捷,首先将波纹钢板剪力墙通过连接件与框架连接,再选取合适的粘弹性阻尼器通过连接件与框架梁下翼缘和波纹钢板剪力墙连接即可;钢框架采用的两端外伸端板式连接方式属于半刚性连接,与传统钢框架中采用的刚性连接方式相比,两端外伸端板式连接方式可以增强结构的变形耗能能力。The present invention is relatively simple and fast in terms of construction. Firstly, the corrugated steel plate shear wall is connected to the frame through the connecting piece, and then a suitable viscoelastic damper is selected to be connected with the lower flange of the frame beam and the corrugated steel plate shear wall through the connecting piece; The steel frame adopts two end-extending end-plate connection methods, which are semi-rigid connections. Compared with the rigid connection method used in traditional steel frames, the two end-extending end-plate connection methods can enhance the deformation and energy dissipation capacity of the structure.

上述技术方案只是本发明的一种实施方式,对于本领域内的技术人员而言,在本发明公开了应用方法和原理的基础上,很容易做出各种类型的改进或变形,而不仅限于本发明上述具体实施方式所描述的方法,因此前面描述的方式只是优选的,而并不具有限制性的意义。The above-mentioned technical solution is only an embodiment of the present invention. For those skilled in the art, on the basis of the application methods and principles disclosed in the present invention, it is easy to make various types of improvements or deformations, and is not limited to The methods described in the above specific embodiments of the present invention, therefore, the above-described methods are only preferred and not limiting.

Claims (3)

1.一种设有粘弹性阻尼器的钢结构减震耗能体系,其特征在于:所述设有粘弹性阻尼器的钢结构减震耗能体系包括框架和设置在框架内的粘弹性阻尼器和波纹钢板剪力墙;1. A steel structure shock-absorbing energy-dissipating system provided with a viscoelastic damper, characterized in that: the steel structure shock-absorbing energy-dissipating system provided with a viscoelastic damper comprises a frame and a viscoelastic damper arranged in the frame and corrugated steel plate shear walls; 所述粘弹性阻尼器的上部和框架的上部连接,所述粘弹性阻尼器的下部与所述波纹钢板剪力墙连接;The upper part of the viscoelastic damper is connected to the upper part of the frame, and the lower part of the viscoelastic damper is connected to the corrugated steel plate shear wall; 所述波纹钢板剪力墙的下部通过连接件与框架的下部连接,两侧与框架分离;The lower part of the corrugated steel plate shear wall is connected to the lower part of the frame through a connector, and the two sides are separated from the frame; 所述框架包括纵向设置的两根框架柱和横向设置的两根框架梁,每根框架梁的一端均与一根框架柱连接,另一端均与另一根框架柱连接;The frame includes two frame columns arranged vertically and two frame beams arranged horizontally, one end of each frame beam is connected to a frame column, and the other end is connected to another frame column; 所述粘弹性阻尼器的上部与上方的框架梁连接,下部与所述波纹钢板剪力墙连接,所述波纹钢板剪力墙的下部与下方的框架梁通过连接件连接;The upper part of the viscoelastic damper is connected to the upper frame beam, the lower part is connected to the corrugated steel plate shear wall, and the lower part of the corrugated steel plate shear wall is connected to the lower frame beam through a connector; 所述波纹钢板剪力墙的两侧与两根框架柱均分离;Both sides of the corrugated steel plate shear wall are separated from the two frame columns; 所述粘弹性阻尼器包括一组粘弹性阻尼装置,每个粘弹性阻尼装置包括内钢板和U形的外钢板,所述内钢板的一部分插入到外钢板的U形结构内,在内钢板的两侧与外钢板之间均设有粘弹性材料,在所述外钢板、粘弹性材料和内钢板上开有通孔,栓钉穿过该通孔;所述栓钉的外圆柱面与内钢板上的通孔的内壁紧密连接,与外钢板的通孔的内壁之间有缝隙;在所述栓钉穿出外钢板的两端处设有垫片;The viscoelastic damper includes a set of viscoelastic damping devices, each viscoelastic damping device includes an inner steel plate and a U-shaped outer steel plate, a part of the inner steel plate is inserted into the U-shaped structure of the outer steel plate, and the inner steel plate A viscoelastic material is arranged between both sides and the outer steel plate, and a through hole is opened on the outer steel plate, the viscoelastic material and the inner steel plate, and the stud passes through the through hole; the outer cylindrical surface of the stud and the inner The inner wall of the through hole on the steel plate is closely connected, and there is a gap between the inner wall of the through hole of the outer steel plate; gaskets are provided at both ends where the stud passes through the outer steel plate; 在所述内钢板伸出外钢板的部分开有螺栓孔,用于与波纹钢板剪力墙连接;所述粘弹性材料和内钢板的两侧面以及和外钢板的内侧面均是通过高温高压硫化的方法粘合成为一个整体,所述粘弹性材料采用高分子聚合物;每个所述粘弹性阻尼装置的上部均通过焊接的方式与上方框架梁的下翼缘连接,下部均通过在所述螺栓孔内安装的螺栓将所述粘弹性阻尼装置与波纹钢板剪力墙连接;所述波纹钢板剪力墙为横置蜂窝型结构;There are bolt holes on the part where the inner steel plate protrudes from the outer steel plate, which is used to connect with the corrugated steel plate shear wall; the viscoelastic material, the two sides of the inner steel plate and the inner side of the outer steel plate are vulcanized by high temperature and high pressure The method is bonded into a whole, and the viscoelastic material is made of high molecular polymer; the upper part of each viscoelastic damping device is connected with the lower flange of the upper frame beam by welding, and the lower part is connected by the bolt Bolts installed in the holes connect the viscoelastic damping device with the corrugated steel plate shear wall; the corrugated steel plate shear wall is a horizontal honeycomb structure; 所述框架梁和框架柱均采用工字型钢;The frame beams and frame columns are all made of I-shaped steel; 在所述框架梁的两端分别焊接有端板,通过节点螺栓将所述端板与框架柱连接;End plates are respectively welded at both ends of the frame beam, and the end plates are connected to the frame columns through node bolts; 所述连接件为鱼尾板。The connecting piece is a fishplate. 2.一种权利要求1所述的设有粘弹性阻尼器的钢结构减震耗能体系的设计方法,其特征在于:所述方法包括:2. A design method of a steel structure shock absorbing energy dissipation system provided with a viscoelastic damper as claimed in claim 1, characterized in that: said method comprises: (1)通过受力分析计算,确定所述粘弹性材料的厚度hv和单层剪切面积Ad(1) determine the thickness hv and the single-layer shear area Ad of the viscoelastic material through force analysis and calculation; (2)确定波纹钢板剪力墙的波纹尺寸和钢板厚度t;(2) Determine the corrugation size and steel plate thickness t of the corrugated steel plate shear wall; (3)将所述波纹钢板剪力墙的下部通过连接件与下方的框架梁连接,再将所述粘弹性阻尼器的上部与上方框架梁的下翼缘焊接固定,下部通过螺栓与波纹钢板剪力墙的上部连接;(3) The lower part of the corrugated steel plate shear wall is connected with the lower frame beam through the connector, and then the upper part of the viscoelastic damper is welded and fixed to the lower flange of the upper frame beam, and the lower part is connected to the corrugated steel plate by bolts The upper connection of the shear wall; 所述步骤(1)是这样实现的:Described step (1) is realized like this: 所述粘弹性材料的厚度hv的计算公式为:hv=dy/0.05;The formula for calculating the thickness h v of the viscoelastic material is: h v = d y /0.05; 所述粘弹性材料的单层剪切面积Ad的计算公式为: The calculation formula of the monolayer shear area A d of the viscoelastic material is: 式中,Vi为框架第i层的层间剪力;G′为粘弹性材料的储存剪切模量,取1200KN/m2;ud为粘弹性阻尼器的水平位移,取粘弹性阻尼器的屈服位移值dy,根据确定dy,dsy为结构层间屈服位移限值;m为第i层布置粘弹性阻尼器的数量;In the formula, V i is the interstory shear force of the i-th layer of the frame; G′ is the storage shear modulus of the viscoelastic material, which is taken as 1200KN/m 2 ; u d is the horizontal displacement of the viscoelastic damper, which is taken as the viscoelastic damping The yield displacement value d y of the device, according to Determine d y , where d sy is the yield displacement limit between layers of the structure; m is the number of viscoelastic dampers arranged on the i-th layer; 所述步骤(2)是这样实现的:Described step (2) is realized like this: 所述波纹钢板剪力墙的波纹尺寸包括波长、波高、水平段与斜段长度比以及角度,具体如下:The corrugated size of the corrugated steel plate shear wall includes wavelength, wave height, horizontal section and oblique section length ratio and angle, specifically as follows: 波长q=2(a+b)的取值范围是:150mm~300mm;The value range of wavelength q=2(a+b) is: 150mm~300mm; 波高d的取值范围是:30mm~10mm;The value range of wave height d is: 30mm~10mm; 水平段与斜段长度比a/c的取值范围:1~2;The value range of the length ratio a/c between the horizontal section and the inclined section: 1~2; 角度θ的取值范围:30°~60°;Value range of angle θ: 30°~60°; 所述钢板厚度的取值范围计算公式为: The formula for calculating the value range of the thickness of the steel plate is: 式中,t为钢板厚度;rR为抗震分项系数,取1.2;l为钢板宽度;fy为钢材抗拉强度设计值;钢板的剪切屈服应力ω=max{a,c},a为波纹水平段长度,b是指波纹斜段的水平投影长度,c为波纹斜段长度;υ为泊松比;Kl局部剪切屈曲破坏影响系数;E为材料弹性模量。In the formula, t is the thickness of the steel plate; r R is the partial coefficient of seismic resistance, which is taken as 1.2; l is the width of the steel plate; f y is the design value of the tensile strength of the steel; the shear yield stress of the steel plate ω=max{a, c}, a is the length of the horizontal section of the corrugation, b refers to the horizontal projection length of the oblique section of the corrugation, c is the length of the oblique section of the corrugation; υ is Poisson's ratio; K l local shear buckling damage influence coefficient; E is the modulus of elasticity of the material. 3.根据权利要求2所述的方法,其特征在于:所述钢板厚度的取值范围:1.6mm~6mm。3. The method according to claim 2, characterized in that: the value range of the thickness of the steel plate is 1.6mm-6mm.
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