Axial compressive behavior and design method of tubed circular steel reinforced concrete short columns

To study the behavior and design of tubed circular steel reinforced concrete (TCSRC) short column under axial compressive loads, a nonlinear finite element model (FEM) has been developed to simulate this kind of structure. Depending on the FEM results, an elastic-plastic analysis was carried out to clarify the status of steel tube, then a simplified procedure was proposed to predict the compressive axial load strength. The results obtained from this procedure were compared with the test results. It is found that they agree well each other.

负荷高峰期间的供电过渡方案—滑县临时变介绍

2009-2012年,为解决滑县供电区主网供电不足的问题,滑县供电公司建设了6座35kV临时变电站。本文介绍了临时变电站的发展历程,举例说明了临时变电站主变压器的选用,控制及保护方式,安装方式,以及监控系统的软硬件结构。临时变电站的一个最大特点就是实现了就地保护,并通过GPRS通讯在调度端实现了"三遥"功能。