粘钢加固混凝土梁界面端附近应力的数值分析

粘钢加固混凝土梁界面端附近应力的数值分析

陆涛;刘一华

【期刊名称】《合肥工业大学学报（自然科学版）》

【年(卷),期】2011(034)011

【摘要】文章利用有限元方法,分析了粘钢加固混凝土简支梁分别受均布载荷作用和温度变化时加固端部界面端附近的奇异应力分布规律,讨论了温度变化、加固长度、钢板厚度及其端部结合角对界面端附近奇异应力的影响.结果表明,在界面端附近由降温产生的温度应力与由均布载荷作用产生的应力具有相似的分布规律,增加加固长度、减小钢板厚度及其端部结合角均能有效地降低界面端附近的应力.%By using the finite element method, the distribution law of the singular stresses near the interface edge of concrete beam strengthened with bonded steel plate is analyzed numerically under uniform load and temperature change respectively. The influence of temperature change, strengthened length and thickness of steel plate as well as its bonded angle at the end on the singular stresses near the interface edge is discussed. The results indicate that the distribution law of the stresses near the interface edge caused by the temperature drop is similar to that by uniform load. Both the increase of the strengthened length and the decrease of the thickness of the steel plate and its bonded angle can effectively reduce the stresses near the interface edge.

【总页数】5页(1696-1700)