摘要
天然石材的应用赋予了建筑物特有的艺术美感和历史文化底蕴.但由于石材的塑性差,抗弯、抗拉强度低,在大跨度梁和大偏心受压柱中,很少有人使用.对石材构件施加预应力,可以改善石材构件的弹塑性状态,提高承载力等.对缩尺比例为1∶2的石梁施加纵向预应力,进行静载试验.试验表明,对石梁施加纵向预应力,可以明显提高梁的受弯承载力及抗裂弯曲能力.预应力技术应用于石材构件中,拓宽了天然石材在仿古建筑领域中的应用.
Application of the natural stone material is endowed with the aesthetic feeling and historical cultural implications Stone material has poor plasticity,low bend strength and tension strength and it is unusually used as span beam and great eccentric pressed member.Prestressed stone beam can improve elastic-plastic state and the bearing capacity.Prestressed stone beam with scale model 1∶2 has been tested under static load.The result indicates that prestressed can increase its flexural capacity and anti-crack performance.Prestress technology applied to stone member broadens the applications of stone in ancien buildings.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2011年第2期172-177,共6页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
关键词
石梁
预应力技术
受弯承载力
stone beam
prestress technology
flexural capacity
