用一种新方法提高梁端塑性铰的耗能能力

Improving the energy dissipation capacity of the plastic hinge of the beam end by a new method

通过在梁端加入钢筋网片来提供侧向约束,更好地提高对混凝土的约束作用,充分利用结构的延性来降低外荷载的作用,使结构在屈服后有较大的变形能力,从而提高梁端塑性铰的耗能能力,更易实现"强剪弱弯"的设计理念,又提高了钢筋的利用率,还有利于对塑性铰区域的震后修复工作。

By adding net reinforcement at the beam end to provide lateral constraint, the constraint effect of concrete is improved. The ducility of the structure is used to reduce the external load, so that the structure has a larger deformation capacity after be yielded. This can improve the energy dissipation capacity of the beam end plastic hinge,more easily achieve the“strong shear weak bending” design concept, and improve the utilization rate of rebar, and is also conducive to the plastic hinge region of the post earthquake restoration work.