CN103410247A - Two-side-connection lateral-reinforcing and unequal-height vertical-gap forming steel plate shear wall - Google Patents

Abstract

The invention discloses a two-side-connection lateral-reinforcing and unequal-height vertical-gap forming steel plate shear wall which is composed of a steel board with gaps, an upper edge frame beam, a lower edge frame beam, an upper end steel angle and a lower end steel angle. The two-side-connection lateral-reinforcing and unequal-height vertical-gap forming steel plate shear wall is characterized in that the upper end of the steel board with the gaps is connected with the upper end steel angle, and the lower end of the steel board is connected with the lower end steel angle; the upper edge frame beam and the lower edge frame beam are respectively connected with the steel board with the gaps through the upper end steel angle and the lower end steel angle; the vertical gaps are distributed in the steel board with the gaps at equal distance, and the lengths of the vertical gaps gradually become small from the outer side to the center. The connecting lines between the upper ends of the vertical gaps and the lower ends of the vertical gaps are symmetrical broken lines or symmetrical arcs.

Description

Translated fromChinese

一种两边连接侧向加劲不等高开竖缝钢板剪力墙A steel plate shear wall with unequal heights and vertical seams connected on both sides and laterally stiffened

技术领域technical field

本发明属于结构工程领域，特别涉及一种两边连接开竖缝钢板剪力墙。The invention belongs to the field of structural engineering, in particular to a steel plate shear wall with vertical seams connected at both sides.

背景技术Background technique

本世纪初日本学者Toko Hitaka提出了带缝钢板剪力墙概念，通过在钢板上合理的开设竖缝，使墙板在侧向荷载下向一系列受弯墙肢一样工作，改变传统钢板剪力墙以面内剪切变形或屈曲后张力场作用为主的受力状态，使墙板以弯曲变形为主，从而提高了其变形能力和耗能能力。然而这种在钢板上开设竖缝的方式是以牺牲剪力墙刚度和极限承载力为代价的。根据数据表明，目前均匀开缝的钢板剪力墙，当墙板的高宽比较大时，墙板较高宽比较小的墙板更难实现屈曲前屈服。因此本发明提出了一种两边连接侧向加劲不等高开缝钢板剪力墙，其钢板上分布了等间距的竖缝，竖缝按照一定规律由外侧到中心逐渐减小，这样的不等高竖缝给高宽比较大的墙板带来了更大的抗侧刚度和极限承载力，从而使得高宽比加大的墙板更容易实现屈曲前屈服，使之拥有良好的耗能能力。At the beginning of this century, Japanese scholar Toko Hitaka proposed the concept of steel plate shear wall with slots. By reasonably opening vertical joints on the steel plate, the wall plate can work like a series of bending wall piers under lateral load, changing the traditional steel plate shear force. The stress state of the wall is dominated by in-plane shear deformation or post-buckling tension field, so that the wall panel is mainly subjected to bending deformation, thereby improving its deformation capacity and energy dissipation capacity. However, this method of opening vertical joints on the steel plate is at the cost of sacrificing the stiffness and ultimate bearing capacity of the shear wall. According to the data, it is more difficult for the wall panels with smaller height and width ratios to achieve pre-buckling yielding for the steel plate shear walls with uniform slots. Therefore, the present invention proposes a steel plate shear wall with unequal heights connected to lateral stiffening on both sides, in which vertical joints with equal intervals are distributed on the steel plates, and the vertical joints gradually decrease from the outer side to the center according to a certain rule. High vertical joints bring greater lateral stiffness and ultimate bearing capacity to wall panels with large aspect ratios, making it easier for wall panels with increased aspect ratios to yield before buckling and have good energy dissipation capacity .

发明内容Contents of the invention

发明目的：本发明的目的是针对现有技术的不足而提供一种两边连接侧向加劲不等高开竖缝钢板剪力墙，从而使得带缝钢板剪力墙的墙板在拥有更优的抗侧刚度和极限承载力的同时，耗能性能也得到相应提高。Purpose of the invention: The purpose of the present invention is to provide a steel plate shear wall with vertical seams with lateral stiffeners at different heights connected on both sides to address the deficiencies in the prior art, so that the wall panels of the steel plate shear wall with seams have a better While improving the lateral stiffness and ultimate bearing capacity, the energy dissipation performance is also improved accordingly.

技术方案：为了实现发明目的，本发明公开了一种两边连接侧向加劲不等高开竖缝钢板剪力墙，由带缝钢板、上边缘框架梁、下边缘框架梁、上端角钢以及下端角钢组成；其特征在于带缝钢板上端与上端角钢连接，钢板下端与下端角钢连接；带缝钢板通过上端角钢和下端角钢分别与上边缘框架梁和下边缘框架梁连接；竖缝等间距地分布于带缝钢板上，并且竖缝的长度自外侧向中心递减。角钢上设有角钢加劲肋。带缝钢板和角钢左侧设有左侧加劲肋，右侧设有右侧加劲肋。左侧加劲肋和右侧加劲肋采用与带缝钢板等厚的钢板或型钢，其钢截面为槽形、工字形或矩形。带缝钢板上的竖缝成等间距分布，竖缝的长度自外侧向中心递减，竖缝的中点位于带缝钢板的横向对称轴上且与其垂直，有且只有一个竖缝过中心点；竖缝的上端点和下端点连接起来为以带缝钢板纵向对称轴的对称折线或者对称圆弧。Technical solution: In order to achieve the purpose of the invention, the present invention discloses a steel plate shear wall with unequal heights and lateral reinforcements connected on both sides, which consists of a steel plate with seams, an upper edge frame beam, a lower edge frame beam, an upper end angle steel and a lower end angle steel Composition; it is characterized in that the upper end of the steel plate with seam is connected with the upper angle steel, and the lower end of the steel plate is connected with the lower angle steel; the steel plate with seam is respectively connected with the upper edge frame beam and the lower edge frame beam through the upper end angle steel and the lower end angle steel; the vertical seams are equally spaced in On the steel plate with seams, and the length of the vertical seams decreases from the outside to the center. Angle steel stiffeners are arranged on the angle steel. The left side stiffener is provided on the left side of the seamed steel plate and the angle steel, and the right side stiffener is provided on the right side. The left side stiffener and the right side stiffener are made of steel plate or section steel with the same thickness as the steel plate with seam, and the steel section is channel-shaped, I-shaped or rectangular. The vertical seams on the seamed steel plate are distributed at equal intervals, the length of the vertical seam decreases from the outside to the center, the midpoint of the vertical seam is located on the transverse axis of symmetry of the seamed steel plate and is perpendicular to it, and there is only one vertical seam passing through the center point; The upper end point and the lower end point of the vertical seam are connected to form a symmetrical broken line or a symmetrical circular arc with the longitudinal symmetrical axis of the steel plate with seams.

有益效果：本发明与现有技术相比，其显著优点在于较传统开缝墙板而言，此墙板拥有更优的抗侧刚度和极限承载力，并且更容易实现屈曲前屈服，实现良好的耗能性能。Beneficial effects: Compared with the prior art, the present invention has the remarkable advantage that compared with the traditional slotted wallboard, the wallboard has better lateral stiffness and ultimate bearing capacity, and it is easier to achieve yield before buckling, achieving good energy consumption performance.

附图说明Description of drawings

图1为本发明的两边连接不等高开竖缝钢板剪力墙的结构示意图。Fig. 1 is a structural schematic diagram of a steel plate shear wall with unequal heights and vertical seams connected on both sides of the present invention.

图2为图1的侧视图。FIG. 2 is a side view of FIG. 1 .

图3为竖缝顶点成对称直线的钢板。Fig. 3 is a steel plate with vertical seam vertices forming a symmetrical straight line.

图4为竖缝顶点成对称圆弧的钢板。Fig. 4 is a steel plate with a vertical seam apex forming a symmetrical arc.

图5为左侧加劲肋和带缝钢板的侧视图。Figure 5 is a side view of the left stiffener and the steel plate with seams.

图6为角钢的示意图。Figure 6 is a schematic diagram of angle steel.

图7为低周往复荷载作用下竖缝递减斜率a=0的剪力墙滞回曲线。Figure 7 is the hysteretic curve of the shear wall with the vertical joint decreasing slope a=0 under the action of low cycle reciprocating load.

图8为低周往复荷载作用下竖缝递减斜率a=0.4的剪力墙滞回曲线。Figure 8 is the hysteretic curve of the shear wall with the vertical joint decreasing slope a=0.4 under the action of low cycle reciprocating load.

具体实施方式Detailed ways

下面结合附图对本发明作更进一步的说明。The present invention will be further described below in conjunction with the accompanying drawings.

如图1和图2所示，本发明的两边连接侧向加劲不等高开竖缝钢板剪力墙由带缝钢板1、上边缘框架梁3、下边缘框架梁3’、上端角钢4以及下端角钢5组成；带缝钢板1、上边缘框架梁3、下边缘框架梁3’、上端角钢4以及下端角钢5都开设有螺旋栓，如图6所示，在角钢的边角处设有更为密集的螺旋栓，通过高强摩擦型螺栓将上端角钢4和下端角钢5分别与上边缘框架梁3、下边缘框架梁3’连接。同时，上端角钢4和下端角钢5都设置有加劲肋8，使得角钢不容易变形；上端角钢4和下端角钢5还通过螺旋栓分别与带缝钢板1的上端和下端连接。以上框架梁、角钢、带缝钢板重叠的表面采取抛丸处理以形成摩擦面。As shown in Figure 1 and Figure 2, the steel plate shear wall with unequal heights and vertical seams connected on both sides of the present invention is composed of a steel plate withseams 1, an upperedge frame beam 3, a lower edge frame beam 3', an upperend angle steel 4 and The lower end angle steel 5 is composed of; the steel plate withseam 1, the upperedge frame beam 3, the lower edge frame beam 3', the upperend angle steel 4 and the lower end angle steel 5 are all provided with screw bolts, as shown in Figure 6, at the corners of the angle steel More dense screw bolts are used to connect theupper angle steel 4 and the lower angle steel 5 to the upperedge frame beam 3 and the lower edge frame beam 3' respectively through high-strength friction bolts. At the same time, both theupper angle steel 4 and the lower angle steel 5 are provided withstiffening ribs 8, so that the angle steel is not easy to deform; The overlapping surfaces of the above frame beams, angle steels, and steel plates with seams are shot blasted to form a friction surface.

带缝钢板的左右侧分别左侧加劲肋2和右侧加劲肋2’，其高度与带缝钢板1的高度相同，并且采用两侧交错间隙焊缝连接的方式将左侧加劲肋2和右侧加劲肋2’分别与带缝钢板1的左侧和右侧相连接；劲肋2采用与带缝钢板等厚钢板或型钢，所述型钢截面为槽形、工字形或矩形。The left and right sides of the steel plate with seam are respectively theleft stiffener 2 and the right stiffener 2', the height of which is the same as that of the steel plate withseam 1, and theleft stiffener 2 and the right stiffener are connected by staggered gap welds on both sides The side stiffeners 2' are respectively connected to the left and right sides of the steel plate withseams 1; thestiffeners 2 are steel plates or section steels of the same thickness as the steel plates with seams, and the sections of the section steels are channel-shaped, I-shaped or rectangular.

如图3和图4所示，带缝钢板1上开设有等距且不等高的竖缝。如图3所示，带缝钢板1上的竖缝等间距布置且开缝高度自带缝钢板外侧向钢板中心成等差数列并保证各缝的中心和钢板的横向中心线重合，竖缝的顶部端点的连线为对称折线；如图4所示，带缝钢板1上的竖缝等间距布置且竖缝的顶部端点的连线为对称圆弧。带缝钢板1上的竖缝由激光切割或等离子切割或水切割而成，缝端部采用圆弧过渡以减小应力集中。As shown in Fig. 3 and Fig. 4, vertical seams of equal distance and unequal height are opened on the steel plate withseams 1 . As shown in Figure 3, the vertical seams on the steel plate withseams 1 are arranged at equal intervals, and the height of the seams is in an arithmetic sequence from the outside of the seamed steel plate to the center of the steel plate, and the center of each seam coincides with the transverse center line of the steel plate. The line connecting the top end points is a symmetrical broken line; as shown in Figure 4, the vertical seams on the steel plate withseams 1 are arranged at equal intervals and the line connecting the top end points of the vertical seams is a symmetrical arc. The vertical seam on the steel plate withseam 1 is formed by laser cutting, plasma cutting or water cutting, and the end of the seam adopts arc transition to reduce stress concentration.

为了验证不等高竖缝可以给钢板剪力墙带来更好的性能，进行了有限元分析，主要考察不同的竖缝递减值对性能增益的影响。In order to verify that unequal height vertical joints can bring better performance to steel plate shear walls, a finite element analysis was carried out, mainly investigating the influence of different vertical joint decreasing values on performance gain.

为了考察不同的竖缝递减值，,墙板高度取3m、厚度取15mm，缝宽取15mm，边缘加劲肋取265mm宽，缝间墙肢宽度取156.25mm，最长竖缝长度取1000mm。对比图7中低周往复荷载作用下竖缝递减斜率为a=0(均匀缝)的剪力墙滞回曲线和图8中竖缝递减斜率为a=0.4的不等高竖缝剪力墙的滞回曲线，发现滞回曲线越来越饱满，并且表现出更加优越的耗能性能，同时具有更高的初始刚度和跟大的承载力。In order to investigate different vertical seam decrement values, the height of the wall panel is 3m, the thickness is 15mm, the seam width is 15mm, the edge stiffener is 265mm wide, the wall width between seams is 156.25mm, and the longest vertical seam length is 1000mm. Comparing the hysteretic curve of the shear wall with vertical joint decreasing slope of a=0 (uniform joint) in Figure 7 and the vertical joint shear wall of different heights with vertical joint decreasing slope of a=0.4 in Figure 8 It is found that the hysteretic curve is getting fuller and fuller, and it shows more superior energy dissipation performance, and has higher initial stiffness and higher bearing capacity at the same time.

Claims (5)

Translated fromChinese

1.一种两边连接侧向加劲不等高开竖缝钢板剪力墙，由带缝钢板（1）、上边缘框架梁（3）、下边缘框架梁（3’）、上端角钢（4）以及下端角钢（5）组成；其特征在于，带缝钢板（1）上端与上端角钢（4）连接，钢板（1）下端与下端角钢（5）连接；带缝钢板（1）通过上端角钢（4）和下端角钢（5）分别与上边缘框架梁（3）和下边缘框架梁（3’）连接；竖缝等间距地分布于带缝钢板（1）上，并且竖缝的长度自外侧向中心递减。1. A steel plate shear wall with vertical seams at different heights with lateral stiffening connected on both sides, consisting of steel plates with seams (1), frame beams at the upper edge (3), frame beams at the lower edge (3'), and angle steel at the upper end (4) and the lower end angle steel (5); it is characterized in that the upper end of the steel plate with seam (1) is connected with the upper end angle steel (4), and the lower end of the steel plate (1) is connected with the lower end angle steel (5); the seamed steel plate (1) passes through the upper end angle steel ( 4) and the lower end angle steel (5) are respectively connected with the upper edge frame beam (3) and the lower edge frame beam (3'); the vertical joints are equally spaced on the steel plate with seam (1), and the length of the vertical joints is from the outside Decrease towards the center.2.根据权利要求1所述的一种两边连接侧向加劲不等高开竖缝钢板剪力墙，其特征在于，角钢上设有角钢加劲肋（8）。2. The steel plate shear wall with lateral stiffening at both sides and unequal heights according to claim 1, characterized in that, angle steel stiffeners (8) are provided on the angle steel.3.根据权利要求1所述的一种两边连接侧向加劲不等高开竖缝钢板剪力墙，其特征在于，带缝钢板（1）和角钢左侧设有左侧加劲肋（2），右侧设有右侧加劲肋（2’）。3. According to claim 1, a steel plate shear wall with lateral stiffening on both sides and unequal heights, characterized in that the steel plate with seams (1) and the left side of the angle steel are provided with a left stiffening rib (2) , with a right stiffener (2') on the right.4.根据权利要求1或4所述的一种两边连接侧向加劲不等高开竖缝钢板剪力墙，其特征在于，左侧加劲肋（2）和右侧加劲肋（2’）采用与带缝钢板（1）等厚的钢板或型钢，其钢截面为槽形、工字形或矩形。4. According to claim 1 or 4, a steel plate shear wall with lateral stiffeners connected on both sides with unequal heights and vertical seams is characterized in that the left side stiffener (2) and the right side stiffener (2') adopt Steel plate or section steel with the same thickness as the steel plate with seam (1), the steel section of which is channel-shaped, I-shaped or rectangular.5.根据权利要求1所述的一种两边连接侧向加劲不等高开竖缝钢板剪力墙，其特征在于，带缝钢板（1）上的竖缝成等间距分布，竖缝的长度自外侧向中心递减，竖缝的中点位于带缝钢板（1）的横向对称轴上且与其垂直，有且只有一个竖缝过中心点；竖缝的上端点和下端点连接起来为以带缝钢板（1）纵向对称轴的对称折线或者对称圆弧。5. A kind of steel plate shear wall with lateral stiffening on both sides and unequal heights with vertical seams according to claim 1, characterized in that the vertical seams on the steel plate with seams (1) are distributed at equal intervals, and the length of the vertical seams Decreasing from the outside to the center, the midpoint of the vertical seam is located on the transverse symmetry axis of the steel plate with seam (1) and is perpendicular to it, and there is only one vertical seam passing through the center point; the upper and lower end points of the vertical seam are connected to form a belt Seam steel plate (1) The symmetrical fold line or symmetrical arc of the longitudinal symmetrical axis.

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