摘要
先张法空心板梁底板纵向裂缝病害较为多发,本文中以16m板梁为例,采用有限元分析手段,对底板贯通开裂后的板梁使用性能进行研究,最后得出纵向裂缝开展程度、铰缝损伤程度对底板预压应力以及顶板横向受力的影响。
Longitudinal cracks on the bottom had became a common disease on pre-tensioned hollow slab. In this article, to take hollow slab with a span of 16 meters for an example, the performance of hollow slab with longitudinal cracks had been analyzed by using finite element. At last, that the degree of crack on the bottom and injury of hinge joint had an effect on the pre-stress of girder bottom and on the transversal stress of girder roof had been proved.
出处
《科技信息》
2014年第11期223-224,256,共3页
Science & Technology Information
关键词
空心板梁
铰缝
纵向裂缝
有限元
Hollow slab
Hinge joint
Longitudinal cracks
Finite element
