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多层砌体1/4比例模型墙体顶部裂缝试验研究
引用本文:陈大川,张成强,唐利飞,尚守平. 多层砌体1/4比例模型墙体顶部裂缝试验研究[J]. 湖南大学学报(自然科学版), 2011, 38(5): 1-7
作者姓名:陈大川  张成强  唐利飞  尚守平
作者单位:1. 湖南大学,土木工程学院,湖南,长沙,410082
2. 中冶建筑研究总院有限公司,北京,100088
基金项目:国家自然科学基金资助项目
摘    要:为了研究多层砌体结构房屋顶端裂缝问题,根据简单相似性原理构建了一1:4比例、每层均布有构造柱和圈梁的H型六层混凝土小型空心砌块砌体结构墙体模型.通过对墙体模型进行竖向加载的拟静力试验,模拟了纵横墙荷载差,深入研究了在竖向荷载差作用下砌体房屋顶端裂缝的产生行为和发展规律.研究结果表明:随着承重墙上竖向荷载的增加,承重墙与...

关 键 词:裂缝  变形  模型试验  竖向荷载差  多层砌体结构

Model Experimental Research on Cracking Development at the Top Section of a 1/4 Scale Multi-story Building
CHEN Da-chuan,ZHANG Cheng-qiang,TANG Li-fei,SHANG Shou-ping. Model Experimental Research on Cracking Development at the Top Section of a 1/4 Scale Multi-story Building[J]. Journal of Hunan University(Naturnal Science), 2011, 38(5): 1-7
Authors:CHEN Da-chuan  ZHANG Cheng-qiang  TANG Li-fei  SHANG Shou-ping
Abstract:In order to study the cracks of multi-story masonry buildings, according to the simple similarity principle of model test, a 1:4 scale six-story H-type small-sized hollow concrete block masonry model was constructed, which arranged a constructional column-beam system in each story. By carrying out the test under vertical load and imitating the load difference between the bearing wall and non-bearing walls, the deformation and cracking behaviors in multi-story masonry buildings were investigated. The test indicated that the compression deformation increased with the increase of the vertical load. The vertical load resulted in different deformation between the bearing wall and non-bearing walls, which led to cracking on the bearing wall near non-bearing walls. Besides, the vertical deformation at the central section of the bearing wall exceeded those at the intersection between the bearing wall and non-bearing wall. Due to the increase of the tensile stress of the bearing wall, cracks occurred at the top section of non-bearing walls near the bearing wall''s ends. With the increase of vertical load, the previous cracks enlarged and developed along with new cracks. The constructional column-beam system restricted the differential vertical deformation effectively.
Keywords:cracks   deflection   model test   vertical load difference   multi-story masonry building
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