高温下预应力混凝土安全壳承压性能研究

发布时间：2018-04-20 08:01

  本文选题：核电厂安全壳 + 高温　； 参考：《世界地震工程》2017年03期

【摘要】：为了研究温度对预应力混凝土安全壳结构抗压能力的影响,建立考虑预应力钢束的安全壳结构有限元模型,计算分析了高温作用下安全壳结构的径向位移、应变、预应力以及结构开裂等参数随内压变化情况。结果表明:在相同内压作用下,温度越高安全壳结构的变形越大;当安全壳结构内部温度低于200℃时,安全壳承压能力基本不发生变化,即在此温度范围内温度对安全壳承压能力基本没有影响;当安全壳结构内部温度达到300℃时,安全壳的承压能力较常温情况时下降明显。
[Abstract]:In order to study the effect of temperature on the compressive capacity of prestressed concrete containment structure, a finite element model of containment structure considering prestressed steel bundle is established, and the radial displacement and strain of containment structure under high temperature are calculated and analyzed. The parameters of prestress and structural cracking vary with internal pressure. The results show that under the same internal pressure, the higher the temperature, the greater the deformation of the containment structure, and when the internal temperature of the containment structure is lower than 200 鈩，

本文编号：1776936