大型放空火炬塔架空中组装技术

目前油气处理厂的设计为了满足处理量和环保排放要求,放空火炬塔架设置都较高且重,而火炬筒体和塔架安装是油气处理厂建设的关键和重点,是整个油气处理厂建设的控制性和标志性设施。现针对塔里木油田某地面工程中放空火炬筒体和塔架组装特点进行分析研究,制定采用350t履带式吊车主吊,50t吊车溜尾的方式,分别对塔架、火炬筒体分段进行空中正装安装方法,确保安全、快捷的完成安装任务。

Hollow tubes constructed by carbon nanotubes self-assembly for CO_(2) capture

Carbon nanotubes(CNTs)have garnered significant attention in the fields of science,engineering,and medicine due to their numerous advantages.The initial step towards harnessing the potential of CNTs involves their macroscopic assembly.The present study employed a gentle and direct self-assembly technique,wherein controlled growth of CNT sheaths occurred on the metal wire’s surface,followed by etching of the remaining metal to obtain the hollow tubes composed of CNTs.By controlling the growth time and temperature,it is possible to alter the thickness of the CNTs sheath.After immersing in a solution containing 1 g/L of CNTs at 60℃ for 24 h,the resulting CNTs layer achieved a thickness of up to 60μm.These hollow CNTs tubes with varying inner diameters were prepared through surface reinforcement using polymers and sacrificing metal wires,thereby exhibiting exceptional attributes such as robustness,flexibility,air tightness,and high adsorption capacity that effectively capture CO_(2) from the gas mixture.

三亚体育场不规则支承轮辐式索桁架组合结构施工技术

三亚体育场屋顶罩棚为不规则支承轮辐式索桁架组合结构,存在新材料应用种类多、工程体量大、组拼安装技术难度大、工程形态复杂、张拉施工技术难度大、索桁架为柔性体系、精度控制难度大、工程构件种类多、施工仿真计算分析复杂等难题。施工过程中应用地面单层索系拼装与连接技术,索桁架提升张拉与空中组装成型同步实施技术,提升张拉过程采用对称分级、主动张拉与被动张拉结合的方法,完成索桁架结构施工,使索桁架结构的力与形达到初始态,实现预期效果。

高空钢桁架安装施工技术探讨

介绍了在两幢主楼间90 m的高空安装重66 t连体钢桁架的技术要点,提出了现场拼装,分件起吊,空中组装、焊接的安装方法,达到钢桁架空中整体安装到位,安全可靠,质量保证的效果。

山地复杂地形环境条件下大型履带式起重机安装施工技术

该文主要介绍在山地场地条件下,大型风电设备吊装施工的履带式起重机安装施工技术。结合现场施工场地环境条件,重点叙述主吊设备650t履带式起重机96m+7m主臂组装,抬吊吊车位于不同高差作业面安装履带式起重机施工技术。