钢筋轻骨料混凝土剪力墙的试验研究

Experiment Study of the Shear Wall of Reinforced Lightaggregate Concrete

通过７个粉煤灰陶粒硷和一个普通砼单片剪力培的试验，研究了在低周反复荷载作用下轻骨料砼剪力墙的强度和变形性能，并与同类普通检剪力墙进行了比较和分析．试验表明，轻骨料砼剪力墙的受力性能和破坏形态与普通砼剪力墙相似，但能量耗散能力和延伸性优于普通砼剪力墙．在试验的基础上，建立了界限剪跨比的判别式，强度控制区的划分条件，提出了抗剪强度计算方法．建议方法的计算值与本次试验及国内外其它资料的结果有较好的吻合程度．本文还对剪力墙位移计算和控制，达到极限强度时的刚度退化率提出了见解．

Through the experiments of seven ceramic-coal ash concrete shear walls and one normal concrete shear wall,this paper studies the strength and deformation behaviour of light aggregateconcrete shear walls under low frequency alternating loading.The behaviour is compared with that of normal concrete shear wall. The experiments show that the behaviour under loading and the collapse form of light aggregate concrete shear walls ars similar to those of normal concrete ones,but their energy consumption ability and ductitity are better than those of normal concrete walls. Based on the experiments,the discriminating formula for limited shear-span ratio and thecondition for dividing strength control zone are set up, and the calculating method for shear strength is suggested. The calculated value of suggested method has good agreement with the results of the experiments and those in other data from home and abroad.The paper also presents ideas on the calculation and control of horizonral deformation of the walls,as well as the stiffness degradation at ultimate strength.