【作者】 袁爱民； 李延和； 李书祥；

【Author】 Yuan Aimin Li Yanhe(College of Civil Engineering, Southeast University,Nanjing210096,China ) (Center of Engineering Appraisal&strengthening , Nanjing University ofTechnology ,Nanjing210009,China)

【机构】 东南大学土木工程学院； 南京工业大学工程检测鉴定与加固中心；

【摘要】 针对在建筑物加固与改造过程中出现的一种新颖的体内外同索的预心力结构给出了其承载力极限状态计算理论。文章首先简要介绍了体内外同索的概念,分析了这种结构体系处理通常改造过程中出现的问题的优点,然后给出了这种方法加固与改造建筑物时预应力损失的计算方法,推导了这种结构承载力极限状态的计算公式。文章最后通过实例计算演示设计计算理论,证明这种实用的计算方法值得在加固与改造工程中推广。更多还原

【Abstract】 The design and calculation theories on a novel Prestressed Concrete Structures with the same tendon in Internality and Externality(STIE) is presented .Generally speaking,such structure systems was applied to strenthen and retrofit building.At the first,the general conception on the same tendon in Internality and Externality was introduced briefly and the advantage using such structure systems to deal with the problem which meeted in the process of a retrofit building engineering was also analyzed.Then the method to calculate the loss of prestressing of the same tendons was given .What’s the more,the caculation formula of the ultimate bearing capacity was also deduced. In the end, an example was given in order to demonstrate the design and calculation theories,which proves such methods worthwhile wide application in strengthening and retrofitted engineering..更多还原