摘要
对10个单向受力石楼板的受弯性能进行试验,重点研究石板的受弯破坏形态、沿截面高度的应变分布规律和受弯承载力.试验结果表明:石板受弯破坏形态为完全脆性破坏,其受弯承载力主要受石板截面尺寸和石材天然缺陷所控制,存在一定离散型;石板断裂破坏前,横截面应变沿高度方向的分布基本上呈线性,符合平截面假定.基于平截面假定和试验结果统计分析,提出石楼板的受弯承载力计算公式,理论计算结果与试验结果吻合较好.
10 one-way stone slabs were tested to investigate the flexural behavior. The failure mode, strain distribution of cross-section and flexural bearing capacity of stone slabs were studied. The results indicate that the failure mode of stone slabs is brittle rupture; the control conditions of flexural capacity are the cross-section of stone slabs and natural defects of stone. Before the failure of stone slabs, cross-section strain distribution along the height is linear, and the plane-section assumption is valid. Based on the test results and the plane-section assumption, an analytical model is pro- posed to calculate the cracking moment of stone slabs. The proposed model agrees well to the experimental results.
出处
《华侨大学学报（自然科学版）》
CAS
北大核心
2012年第2期184-187,共4页
Journal of Huaqiao University(Natural Science)
基金
福建省自然科学基金资助项目(E0810021)
福建省厦门市科技计划项目(3502Z20093029)
关键词
石结构
石楼板
脆性破坏
受弯承载力
stone structure
granite stone slab
brittle failure
flexural behavior
