人工质量在砖混结构振动台试验中的作用

通过组合墙片的拟静力试验和模型房屋的振动台试验，分析研究了人工质量模拟对砖混结构振动台试验的作用和影响。研究表明，重力对结构的弯曲刚度有较大影响，但不影响结构的剪切刚度。在主拉应力破坏的条件下，结构的破坏荷载随重力的增加而增大。提出了不完全模拟的人工质量模型应满足的相似条件及如何根据模型试验结果估计原型结构的抗震能力。

Effects of ballast on test of shaking table for masonry structures

The tests of shaking table for a building model and anti-shearing of 9 pieces of bearing wall of masonry have been carried out to investigate the effect on results of shaking table test. It is observed that gravity lias a significant effect on the bending stiffness of the structure tested and no effect on the shearing stiffness. In the case of cracking under primary tension, the bigger the gravity stress is, the higher the cracking load rises. How to evaluate the earthquake-resistant capacity of the prototype according to the results of the model with less ballast is presented in this paper.