Concrete hollow blocks have the advantages of simplified construction, reduced construction time, and better thermal performance, and can thereby achieve energy conservation in building engineering and significantly improved thermal and mechanical performance. A new tenon composite block is presented to achieve better self-thermal insulation and mechanical performance by integrating thermal materials into blocks. The tenon composite block application requires satisfying mechanical and seismic performance. Therefore, to prove the mechanical and seismic performance of the tenon composite block, a low cyclic loading test was performed on two self-thermal insulation wall specimens: the tenon composite block and the “Martha” block (used as the comparison specimen). The crack distributions, failure modes, force–displacement data expressed using hysteresis and skeleton curves, mechanical parameters of strengths, displacements, ductility coefficients, stiffness degradations, and equivalent viscous damping coefficients of the two specimens were analyzed in the low cyclic loading test. By analyzing the specimen crack distributions and failure modes, the tenon composite block was proven capable of effectively connecting the heat insulation and loading bearing parts. The differences in the force–displacement data and the mechanical parameters between the tenon composite block and “Martha” block specimens, such as the higher strength and stiffness of the tenon composite block specimen and similar ductility performance with the widely applied “Martha” specimen, were mainly caused by the size differences between the tenon composite block and “Martha” specimens. Finally, suggestions for tenon composite block applications are proposed to overcome the limitations of the tenon composite block’s ability to consume seismic energy.

中文翻译：

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自保温砌块新型榫卯复合墙体力学性能试验研究

混凝土空心砌块具有简化施工、缩短施工时间、保温性能好等优点，可实现建筑工程节能，显着提高热力学性能。提出了一种新型榫头复合砌块，通过将热材料集成到砌块中来实现更好的自保温和机械性能。榫卯复合砌块应用要求满足机械和抗震性能。因此，为了证明榫复合砌块的力学和抗震性能，对两个自保温墙试件进行了低循环荷载试验：榫复合砌块和“玛莎”砌块（用作对比试件）。裂纹分布、失效模式、在低循环载荷试验中分析了使用滞后和骨架曲线表示的力-位移数据、强度的机械参数、位移、延性系数、刚度退化和两个试样的等效粘性阻尼系数。通过对试件裂纹分布和失效模式的分析，证明了榫复合块能够有效地连接隔热和承重部件。榫头复合块体与“玛莎”块体试样在力位移数据和力学参数上的差异，如榫头复合块体试样具有更高的强度和刚度，以及与广泛应用的“玛莎”试样相似的延展性能，主要是由于榫复合块和“玛莎”试样之间的尺寸差异造成的。最后提出了榫卯复合砌块应用的建议，以克服榫卯复合砌块消耗地震能量能力的局限性。