The utility model discloses a connecting beam structure strengthened by X-shaped steel plate, which comprises a connecting beam and a wall leg. The connecting beam is arranged with X-shaped steel plate, and the wall leg is arranged with anchoring components. The X-shaped steel plate is supported by anchoring components on both sides. The utility model adopts the X-shaped steel plate embedded in the connecting beam to form a reinforced concrete composite connecting beam structure, adopts a reasonable steel plate distribution form to connect and combines the advantages of the steel plate and the concrete connecting beam itself. The principle of the utility model is that the steel plate distributed in the shape of \X\ resists the bending moment and shear force in the connecting beam under the action of load and can be used at the failure interface. Effective cross-sectional area is provided to resist the tension generated, and effective cross-sectional resistance between cracks in diagonally parallel directions and shear forces along the cracks are provided. This method overcomes the problems of poor bearing capacity, low ductility and poor energy consumption of traditional coupling beams. It can also reduce the complexity of the traditional coupling beams and the inconvenience of construction.
【技术实现步骤摘要】
一种采用X型钢板加强的连梁结构
本技术涉及一种高层建筑结构中连梁的设计技术,特别是一种采用X型钢板加强的连梁结构的设计方法。
技术介绍
连梁是高层建筑结构中剪力墙之间的重要连接构件,在相关结构设计中通常被设计为首先进入屈服的构件,作为抗震设防的第一道防线发挥作用。连梁在荷载作用下的变形如图1所示。当连梁为跨度较大而梁高较小的情况时,设计原则可采用普通梁设计原则,这种梁的破坏一般也与框架梁类似,但很多情况下存在于连肢剪力墙结构中的连梁通常为跨度较小的深梁(跨高比小于3),其两侧相连接的为刚度较大的墙肢,剪力墙在水平力作用下产生弯曲变形,与之相连的连梁两端产生弯矩与剪力;并且连梁的弯矩在连梁两端方向相反,沿全跨剪力相等,反弯点位于连梁中央(如图2所示),这种反弯作用使得连梁能产生很大的剪切变形,很容易产生斜剪裂缝,在往复荷载下产生交叉斜裂缝,导致脆性剪切破坏。采用常规配筋设计的连梁无法有效提高连梁承载力及延性,对脆性剪切破坏的改善情况也较为有限,这种情况下连梁破坏突然,耗能能力低,一旦破坏之后无法有效耗散地震能量,不利于结构整体抗震。根据已有的研究成果,连梁易于发生的破坏为弯曲剪切破坏和剪切破坏,弯曲滑移破坏则较少出现,弯曲剪切破坏和剪切破坏都具有类似的斜向交叉裂缝,弯曲剪切破坏还会在梁端产生塑性铰,这与这种小跨高比连梁的受力特点有密切关系。这几种破坏模式如下:1、弯曲滑移破坏:如图3(a)所示,施加荷载后连梁首先在与墙肢交接位置的受拉一侧出现垂直于连梁的弯曲裂缝。荷载反向后,受拉裂缝闭合,受压区变为受拉区,同一截面的另一受拉边出现同样的裂缝。随着荷载的增加及 ...
【技术保护点】
1.一种采用X型钢板加强的连梁结构,包括连梁(2)和墙肢(3),其特征在于:所述的连梁(2)中布置X型钢板(1),墙肢(3)中布置锚固构件(4),所述的X型钢板(1)通过两侧的锚固构件(4)支撑并锚固;所述的X型钢板(1)关于水平中心线对称、关于垂直中心线对称;所述的锚固构件(4)长度方向与水平面垂直,两侧的锚固构件(4)相互平行。
【技术特征摘要】
1.一种采用X型钢板加强的连梁结构,包括连梁(2)和墙肢(3),其特征在于:所述的连梁(2)中布置X型钢板(1),墙肢(3)中布置锚固构件(4),所述的X型钢板(1)通过两侧的锚固构件(4)支撑并锚固;所述的X型钢板(1)关于水平中心线对称、关于垂直中心线对称;所述的锚固构件(4)长度方向与水平面垂直,两侧的锚固构件(4)相互平行。2.根据权利要求1所述的一种采用X型钢板加强的连梁结构,其特征在于:所述的X型钢板(1)的垂直...
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