H型混凝土砌块砌体偏压性能试验研究与分析  

Experimental study and analysis on eccentric compression performance of H-type concrete block masonry

作　　者：王少杰[1] 周涛[1] 刘福胜[1] 孙国彪 史凤凯 WANG Shaojie;ZHOU Tao;LIU Fusheng;SUN Guobiao;SHI Fengkai(College of Water Conservancy and Civil Engineering,Shandong Agricultural University,Tai′an 271018,China)

机构地区：[1]山东农业大学水利土木工程学院,山东泰安271018

出　　处：《混凝土》2018年第9期133-138,142,共7页Concrete

基　　金：山东省自然科学基金(ZR2017BEE022)

摘　　要：为了研究芯柱、偏心距对H型混凝土砌块砌体偏心受压性能的影响,通过试验研究和数值分析,对其破坏过程、破坏形态、开裂与极限荷载、变形性能等进行了分析,通过修正分别建立了未灌孔与灌孔时H型混凝土砌块砌体偏压承载力计算公式。结果表明:偏压情况下,H型混凝土砌块特有的三排孔构造在受力全过程均可共同工作;H型混凝土砌块砌体的极限承载力均随着偏心距增加而降低;与KX组相比,同种偏心距情况下(0、36、72 mm),芯柱使得GX组极限承载力分别高128.20%、60.08%、15.52%;基于分离式方法所建数值模型可靠、有效,能用于拓展分析;修正建立的极限承载力计算公式,可为工程应用提供支撑。In order to study the effect of core column and eccentricity on the eccentric compression performance of H-type concrete block masonry,the damage process,failure mode,cracking and ultimate load,deformation performance were analyzed through the experimental study and numerical analysis.Calculation formula of bias bearing capacity for H-type concrete block masonry are corrected and re-established.The results show that the unique three-row pore structure of H-type concrete block can work together in the whole loading process;the ultimate bearing capacity of H-type concrete block masonry decreases with the increase of eccentricity;compared with group KX,the ultimate bearing capacity of group GX respectively increased 128.20%,60.08%and 15.52%under the same eccentricity(0,36,72 mm);the numerical model based on the separation method is reliable and effective,so it can be used to expand the analysis;the modified formula for calculating the ultimate bearing capacity can be used to provide support for engineering applications.

关 键 词：H型混凝土砌块砌体 芯柱 偏心受压 极限承载力 

分 类 号：TU528.7[建筑科学—建筑技术科学]