陶粒粉煤灰配筋砌体墙抗震性能试验及理论研究

Experimental and theoretical research on seismic performance of ceramsite fly ash reinforced masonry walls

提出一种新型配合比的陶粒粉煤灰发泡混凝土作为砌体墙材料,对该种绿色材料进行基本力学性能试验,得到其砌块和砌体的力学指标和本构方程;设计了两榀陶粒粉煤灰配筋砌体墙,通过拟静力试验检验其抗震性能,并与其他绿色材料配筋砌体墙进行对比。建立与试验相关的数值模型,通过数值模型扩展分析,研究改变关键参数对墙体抗剪承载力的影响,并提出适用于此类结构的抗剪承载力理论公式,将计算结果分别与试验值和模拟值对比,验证该公式具有较高的精度。

A new mix ratio of ceramsite fly ash foamed concrete was proposed as a masonry wall material. The basic mechanical performance test of this green material was carried out, and the mechanical indexes and constitutive equations of the blocks and masonry were obtained;and the seismic performance of two-tiered ceramsite fly ash reinforced masonry wall was tested by a pseudo-static test and compared with other green material reinforced masonry walls. a numerical model related to the test was established, and through numerical model expansion analysis, the impact of changing key parameters on the shear capacity of the wall was studied. A theoretical formula for the shear capacity of this type of structure was proposed, and the calculation results were compared with the experimental values and simulation values,which verified that the formula had higher accuracy.