针对储能光热电站运行特性建立了基于利润最大化的机组启停优化模型.该模型考虑了吸热系统和发电岛3种开机模式和一个停机模式的能量需求,通过优化启停时间,吸热系统、储能系统和发电岛之间的热能交换以及发电和储热水平来最大化机组运行利润.与传统模型相比,本模型考虑了启停过程中的启停能量和热功率约束、太阳能辐射资源以及储能套利机会.给出了一个算例模拟了电站以15 min为调度区间的168 h启停和运行,模型提供的启停和运行决策与资源可用性和电价模式高度吻合,能较好地为机组运行提供决策参考.

为了便于研究钢筋混凝土扁梁边节点抗震能力,进行了2个1∶1足尺尺寸钢筋混凝土扁梁边节点拟静力试验,进行试验的目的是观察扁梁边节点在低周往复荷载作用下的破坏机制、承载力、刚度变化、边梁刚度大小对扁梁受力性能的影响.边梁使用的是一般框架梁,进而在边梁柱节点连接处产生刚性节点,增大边梁刚度,增强边梁的承载能力.试验结果可看出与传统扁梁相比,扁梁截面宽度为相应柱宽3倍的扁梁边节点的抗震性能与其相近;突破了在《建筑抗震设计规范》中规定扁梁截面宽度应保持在相应柱截面宽度在2倍及2倍之内的限值要求.

在偏心受压、低周往复位移荷载的共同作用下,方钢管再生粗骨料混凝土柱部件的滞回性会发生变化,利用有限元软件ABAQUS进行仿真模拟和理论分析.研究结果表明:在上述条件的情况下,方钢管再生粗骨料混凝土柱基本不会出现捏缩,其滞回曲线也非常的豹猫,因此进一步的说明这种部件具备良好的延性性能,同时其承载力也达到了标准要求.鉴于此,建议其在工程应用中推广使用.

Structural adhesive with nanomaterial is the invention of high-tech patented product which developed after years of trial and error(patent number:ZL02139834.8),and it has been widely used in post-installed chemically bonded rebar,visco-steel,carbon fiber,etc.Hundreds of similar structural adhesive are aroused nowadays.In this paper,starting from the development of the patented product,some of the problems were fully expatiated and contrasted which should be strengthened and staff should pay particular attention at the technical aspects arising from post-installed chemically bonded rebar.

The essay discusses vertical unbounded pre-stressed bridge structures using high-strength thick unbounded pre- stressed reinforcement force performance, anti-cracking performance, security and reliability than unbounded pre- stressed forces. It can also meet the design requirements, can be simple in construction, can accelerate construc- tion speed, and save project cost. . The essay introduces the pre-stressed system and settings, vertical pre-stress crude steel composition, construction technology, construction and quality control measures.

过程控制是钢结构生产质量保证体系的核心,是质量保证的根本.过程控制落实的结果是工序能力指数,是一次交验合格率指标.