摘要：BIM技术提供了多方沟通协调的平台,提升了工程建设的质量及管理效率。设计管理是总承包单位的核心职责之一,也是大型工程项目管理的重难点,BIM的信息集成特性及可视化特性为辅助总承包单位开展设计管理提供技术支持。本文以北京市朝阳区金盏项目为例,从总承包单位角度出发,阐述了基于BIM技术的设计应用体系与设计管理体系。对BIM在深化设计、维护变更等方面的具体应用进行了简述,同时介绍了基于该项目管理难点的设计管理解决方案。

摘要：丽泽SOHO工程地上核心筒为钢筋混凝土结构,外框架为异形钢管混凝土柱-钢梁,结构外围钢柱为34根,钢管柱内为混凝土,设计要求采用自密实混凝土地下室钢管柱采用高抛施工工艺,地上钢管柱采用顶升施工工艺。

摘要：The electrochemical reduction of CO_(2) towards hydrocarbons is a promising technology that can utilize CO_(2) and prevent its atmospheric accumulation while simultaneously storing renewable en‐***,current CO_(2) electrolyzers remain impractical on a large scale due to the low current densities and faradaic efficiencies(FE)on various *** this study,hybrid HKUST‐1 metal‐organic framework‒fluorinated imidazolium‐based room temperature ionic liquid(RTIL)electrocatalysts are designed to selectively reduce CO_(2) to CH_(4).An impressive FE of 65.5%towards CH_(4) at-1.13 V is achieved for the HKUST‐1/[BMIM][PF_(6)]hybrid,with a stable FE greater than 50%maintained for at least 9 h in an H‐*** observed improvements are attributed to the increased local CO_(2) concentration and the improved CO_(2)‐to‐CH_(4) thermodynamics in the presence of the RTIL molecules adsorbed on the HKUST‐1‐derived Cu *** findings offer a novel approach of immobilizing RTIL co‐catalysts within porous frameworks for CO_(2) electroreduction applications.