坡屋顶现代夯土农房模型振动台试验研究

Shaking table tests on the model of the modern rammed earth house with single-pitched roof

以单层坡屋顶原型房屋的1/2缩尺振动台模型为对象,对现代夯土建筑在夯土材料、夯筑机具、夯筑工艺、抗震构造措施等方面的改良技术做了简要说明,重点对结构模型在不同峰值加速度作用下的动力特性、加速度及位移反应、开裂及破坏过程做了详细分析。试验结果表明,良好的机械夯筑性能加上科学有效的构造措施,使现代夯土建筑在遭受相当于8度罕遇地震作用下,仍然可以继续承载,而且表现出较好的变形能力。现代夯土建筑体系具有一定的推广与应用价值。

The object of 1 /2 scale model of the prototype single-pitched roof house was studied. First,a brief description of the improved technologies of modern rammed earth house was conducted in fields of rammed earth materials,ramming machine,ramming technology and seismic construction measures. Further,the model＇ s dynamic properties,responses of acceleration and deformation,cracking pattern and failure mechanism under different acceleration peak values were discussed in detail. The test results show that good mechanical ramming properties,scientific and effective construction measures make modern rammed earth construction show good bearing capacity and good deformation ability under the rare earthquake equivalent to 8 seismic intensity earthquake. The modern rammed earth construction system has a certain promotion and application value.