通过对EPS颗粒体积分数为0%,20%,30%,40%的轻质混凝土施加5×10~4次频率为5Hz的循环动荷载进行循环动力试验,对测得的数据进行计算分析,得出不同配比的EPS轻质混凝土阻尼比的变化规律.通过测定经过动力循环试验的轻质混凝土的强度,研究轻质混凝土的耐久性能.结果显示,EPS含量越高,阻尼比越大;施加的荷载越大,阻尼比的变化越明显.经过5×10~4次循环动载试验后EPS轻质混凝土强度减少不明显,量化阻尼比规律和耐久性对EPS轻质混凝土在长期循环施工的实际工程中的使用具有重要的意义. Cyclic dynamic tests were carried out on cyclic concrete with 5 × 10 ~ 4 frequencies of 5Hz under the condition of 0%, 20%, 30% and 40% of the volume fraction of EPS particles. The measured data were calculated and analyzed. The law of damping ratio of EPS light weight concrete with different ratio is obtained.The durability of light weight concrete is studied by measuring the strength of light weight concrete subjected to dynamic cycling test.The results show that the higher the content of EPS is, The greater the applied load, the more obvious the change of damping ratio.Effective reduction of EPS lightweight concrete after 5 × 10 ~ 4 cycles dynamic load test, quantitative damping ratio and durability of EPS light weight concrete in long-term cycle construction The practical use of the project is of great significance.