浅谈预应力混凝土箱梁的冬季施工

结合运城绕城高速公路西南段路基桥涵工程实例,阐述了预应力混凝土箱梁冬季施工前的准备工作,钢筋及钢绞线的加工制作,混凝土的拌制、运输、浇筑及养护等施工技术,并提出了冬季施工的质量保证措施。     

Best practices for organizational change management within electrical contractors

Few studies have investigated best practices for organizational change management (OCM) within the electrical contracting industry. This study had two research questions: first, to determine whether there is a relationship between electrical contractor usage of OCM practices and successful change adoption; second, to identify whether electrical contractors have recommendations for how to effectively implement OCM practices within their companies. The first research question was assessed via a national survey of 94 electrical contractors who had recently adopted an organizational change. The second question was explored through 11 in-depth interviews of electrical contractors who had implemented organizational changes such as prefabrication, management team realignment, new software, paperless mobile technology, payroll automation, and entering into a new market. Results showed OCM practices were associated with successful change adoption. OCM practices that had a direct association with successful change adoption included change agent effectiveness, a realistic timescale, providing change-related training, senior leadership commitment, measuring performance benchmarks, providing sufficient resources, and effective change message communication. Interviewees recommended best practices for executing these OCM practices. Contributions include being the first study to investigate OCM practices specifically within the electrical contracting industry and identification of how practitioners can implement OCM practices for their change initiatives.     

HDB's next generation of eco-districts at Punggol and eco-modernisation of existing towns

This article presents the plans for the Punggol Eco-Town and eco-modernisation developed by Singapore's Public Housing Authority, Housing and Development Board's Building Research Institute as a model for the future development of next generation of eco-friendly homes and sustainable new towns in a dense urban environment setting in Singapore.     

小型构件预制施工技术

为提高吉河高速公路小型构件预制施工管理水平,克服小型构件零散加工,质量难以控制的通病,结合吉河高速的实际情况,特编制了吉河高速小型构件预制施工技术方案,并阐述了具体的施工工艺及质控措施,以达到预期的施工效果.     

铁路箱梁制运架施工主要危险源及控制措施

结合具体工程实例,通过对铁路箱梁预制及架设施工中危险有害因素的辨识、评价及风险控制管理方法进行总结,重点阐述了安全生产管理制度的建立和责任制落实、危险源辨识评价及监控管理、员工安全培训、工地安全文化建设等方面的管理经验,对高速铁路客运专线的施工安全管理有一定的指导意义。     

Elemental: A Do Tank

Alejandro Aravena has gained international honours and awards for his pioneering work at Elemental. An independent practice with a ‘social conscience’, Elemental seeks to deliver greater equality for urban dwellers and improve the quality of people's lives. It has formed key partnerships with Universidad Catolica de Chile (Chile's Catholic University) and the Chilean oil company, COPEC. Here Aravena describes some of the works that have informed Elemental's strategy: from its first housing project in Iquique in northern Chile to a sustainable masterplan with Arup for the coastal town of Constitución in the wake of the Chilean earthquake. Copyright © 2011 John Wiley & Sons, Ltd.     

装配式箱变基础的设计及应用

装配式箱变基础是箱式变电站基础建设的一场变革,改变了传统的箱变基础的设计和施工模式。采用全预制装配式的箱变基础,分为工厂生产预制和现场装配安装两大阶段,通过稳定性计算、承载力计算以及技术经济效益的对比分析,装配式箱变基础是一种安全可靠、经济合理的选择,相对传统的现浇混凝土基础,单个基础可节约造价约19%,工期大大缩短,提高了施工效率。     

50mT梁预制工艺

简述了杭州某桥50 m T梁的预制工艺,着重介绍了在施工时如何控制T梁的内在和外观质量,同时给出了相应的技术措施,并总结了几点施工体会,以指导类似工程施工。     

谈40m预应力T梁预制工艺及质量控制

结合某工程实际情况,介绍了40 m预应力混凝土T梁施工方案及预制工艺,并给出了外观质量控制措施,通过有效实施,保证了＂马蹄形＂部分混凝土的振捣密实,同时提高了T梁外观质量。     

预应力混凝土箱梁预制的质量控制

从预制箱梁场地建设、模板体系、钢筋绑扎、海工耐久性混凝土、箱梁整孔预制五个方面论述了跨海大桥非通航孔大跨预应力混凝土箱梁预制的技术难点与质量控制,从而有效地生产出质量优良的大跨预应力混凝土箱梁。