一种内嵌自复位单元的高延性双屈服点耗能连梁

Abstract

本申请提出一种内嵌自复位单元的高延性双屈服点耗能连梁，主要包括：连梁本体，所述连梁本体内嵌负泊松比芯板，所述负泊松比芯板形成一阶耗能；自复位耗能支撑，两组所述自复位耗能支撑交叉设置于所述连梁本体的相对两侧形成二阶耗能，每一组所述自复位耗能支撑均由两根型钢支撑通过自复位连接装置对接连接构成，在受力时能够由所述自复位连接装置产生轴向位移并提供复位力。本申请基于分阶段屈服机制、抗屈曲设计、自复位设计以及多模式耗能协同作用，提出了一种内嵌自复位单元的高延性双屈服点耗能连梁，显著提升连梁的耗能能力，减少主体结构破坏，提高经济效益。

Claims

1. A high ductility dual-yield point energy dissipation coupling with embedded self-resetting units, characterized in that, Mainly includes: The connecting beam body has a negative Poisson ratio core plate embedded in it, and the negative Poisson ratio core plate forms a first-order energy dissipation. The self-resetting energy dissipation supports are arranged crosswise on opposite sides of the connecting beam body. Each set of self-resetting energy dissipation supports consists of two steel supports connected by a self-resetting connecting device. Under small deformation, the self-resetting energy dissipation support can generate axial displacement and provide a restoring force through the self-resetting connecting device. Under large deformation, the self-resetting energy dissipation support enters the plastic stage and forms a second-order energy dissipation.

2. The high ductility dual yield point energy dissipation link of claim 1, wherein, The main body of the connecting beam is an I-beam or an H-beam, and a weakening zone is formed in the middle of the web of the I-beam or H-beam.

3. The high ductility dual yield point energy dissipation link of claim 2, wherein, The weakening region is provided with peanut-shaped holes arranged in an alternating horizontal and vertical array to create a negative Poisson's ratio effect.

4. The high ductility dual yield point energy dissipation link of claim 2, wherein, Weld end plates to both ends of I-beams or H-beams.

5. The high ductility dual yield point energy dissipation link of claim 4, wherein, On one side of the web, a connecting plate is welded between the end plate at one end and the upper flange, and a connecting plate is welded between the end plate at the other end and the lower flange. The two ends of the self-resetting connecting device are respectively connected and fixed to the two connecting plates. On the other side of the web, two connecting plates are arranged in opposite ways, such that the two sets of self-resetting energy-dissipating supports are cross-arranged on both sides of the web.

6. The high ductility dual yield point energy dissipation link of claim 5, wherein, The steel support is a C-shaped steel, backed by the web of an I-shaped or H-shaped steel, and its two ends are connected and fixed to two connecting plates by bolts respectively.

7. The high ductility dual yield point energy dissipation link of claim 1, wherein, The self-resetting connection device includes one or more disc spring units. Each disc spring unit includes two oppositely arranged disc spring baffles and multiple disc spring groups installed on the two disc spring baffles. The two disc spring baffles are respectively welded and fixed to the ends of two steel supports.

8. The high ductility dual yield point energy dissipation link of claim 7, wherein, Each of the multiple disc spring groups includes a disc spring unit one, two disc spring units two, and a disc spring anchor. The disc spring anchor is inserted through two disc spring baffles. One disc spring unit is fitted onto the disc spring anchor between the two disc spring baffles, and the two disc spring units two are respectively fitted onto the disc spring anchors outside the two disc spring baffles.

9. The high ductility dual yield point energy dissipation link of claim 8, wherein, The disc spring anchor is a high-strength steel rod.

10. The high ductility dual yield point energy dissipation link of claim 7, wherein, The disc spring unit is provided in three groups, and the three groups of disc spring units are arranged in an equilateral triangle.

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