以淀粉基水性高分子异氰酸酯（API）胶合木胶接结构为研究对象，以胶接的压缩剪切强度为评估指标，通过加速湿热老化试验对胶接结构的破坏模式和失效机理进行了研究。结果表明：胶接结构的断裂性质为韧性断裂，且随着老化时间的增加，其破坏模式为由内聚破坏向内聚破坏+界面破坏转变。在湿热老化试验前期温度对压缩剪切试样性能起主要作用，在老化后期湿度起主要作用。

The starch- based aqueous polymer isocycante（API）gluelam bonding as the research object，with tensile shear strength as a key evaluation index，accelerated aging tests on gluelam bonding to study damage mode and failure mechanism of the bonding The results show that：the adhesive fracture properties of ductile fracture structure，and with the increase of aging time，the damage mode of the bonding transforms form cohesion damage mode to the integrated mode of cohesion damage and interface damage. In the early stage of the aging tests，the effect of temperature on the tensile shear strength is more important；however，with the increase of aging time，the effect of humidity on tensile shear strength becomes more important.