页岩陶粒混凝土梁的受弯承载力试验研究  

Experimental Study on Flexural Capacity of Shale Ceramsite Concrete Beams

作　　者：于周平 詹培敏[3] 杨伟军 何智海 莫振林 YU Zhou-ping;ZHAN Pei-min;YANG Wei-jun;HE Zhi-hai;MO Zhen-lin(College of Civil Engineering,Changsha University of Science and Technology,Changsha 410076,China;Yuanpei College,Shaoxing University,Shaoxing 312000,China;College of Civil Engineering,Shaoxing University,Shaoxing 312000,China;China Southwest Geotechnical Investigation and Design Institute Co.,Ltd.,Chengdu 610081,China)

机构地区：[1]长沙理工大学土木工程学院,长沙410076 [2]绍兴文理学院元培学院,绍兴312000 [3]绍兴文理学院土木工程学院,绍兴312000 [4]中国西南勘察设计研究院有限公司,成都610081

出　　处：《硅酸盐通报》2019年第5期1433-1437,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(41572305)

摘　　要：通过对16根陶粒混凝土梁和1根普通混凝土梁进行了受弯对比试验,研究了钢筋和陶粒对混凝土梁受弯承载力的影响。结果表明:素陶粒混凝土梁的破坏是由两条贯穿裂缝引起的脆性破坏,其破坏机理是以陶粒破坏为主,破坏断面裂缝贯穿粗集料;混凝土梁的受弯承载力随着陶粒强度和钢筋配筋率的增加呈上升趋势;陶粒的粒径及级配、保护层厚度和钢筋的直径对混凝土梁的承载力也有一定影响。Ceramsite concrete is seldom applied to load-bearing structures in China. The bending tests were carried out on 16 ceramsite concrete beams and 1 ordinary concrete beam o understand the flexural capacity of ceramsite concrete beams. Influence of ceramsite and steel bar on bearing capacity of ceramsite concrete beams were analysised. The results show that the destruction ceramsite concrete beams without reinforcement is brittle failure caused by two through cracks. Its failure mechanism is mainly the destruction of ceramsite,failure section through coarse aggregate. Flexural bearing capacity of concrete beams is an upward trend with the strength of ceramsite and the ratio of reinforcement to reinforcement. In addition,the particle size and gradation of ceramsite,the thickness of protective layer and the diameter of reinforcing steel also have certain effects on the bearing capacity of ceramsite concrete beams.

关 键 词：陶粒混凝土梁 承载力 陶粒强度 

分 类 号：TU377.1[建筑科学—结构工程]