We develop a novel replaceable energy dissipative device for precast concrete beam-column connections. The device comprises two short concrete-filled steel tubes and a web with a opening. To better understand the seismic behavior of the device, four test specimens were subjected to a cyclic load and one specimen subjected to a monotonic load. The load-carrying capacity, stiffness, hysteretic behavior, energy dissipation capacity and ductility of the device were recorded. The test results indicate that the device has excellent plastic deformation capacity, energy dissipation capacity and ductility.

A parametric study was then carried out using finite element analysis, which showed that the index $l_2^3∕EI$ can be used to characterize the bending deformation mechanical properties of the device; usually, a larger value of $l_2^3∕EI$ means that the device has better deformation and ductility capacity.

Finally, a numerical simulation analysis of a precast concrete beam-column joint connected by the device proved that the seismic performance of the precast joint can be significantly improved in terms of the deformation capacity, energy dissipation and ductility, while the damage severity of the beam and column members is significantly reduced.

我们为预制混凝土梁柱连接开发了一种新型的可替代耗能设备。该设备包括两个短混凝土填充钢管和一个带开口的网。为了更好地了解设备的抗震性能，对四个试样施加了循环载荷，对一个试样施加了单调载荷。记录装置的承载能力，刚度，滞后行为，能量耗散能力和延展性。测试结果表明，该装置具有优异的塑性变形能力，能量耗散能力和延展性。

然后使用有限元分析进行参数研究，结果表明该指数 ${升}_{\mathrm{2个}}^3∕E\mathrm{一世}$可用于表征装置的弯曲变形力学性能；通常，较大的值${升}_{\mathrm{2个}}^3∕E\mathrm{一世}$ 意味着该装置具有更好的变形和延展性。

最后，通过该装置连接的预制混凝土梁柱节点的数值模拟分析证明，该预制节点的抗震性能可在变形能力，能量耗散和延展性方面得到显着改善，而梁的破坏严重性列成员显着减少。