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, 2016 跨海大桥是最需要考虑节约资源和进行环境保护的桥梁。而大跨度公铁两用斜拉桥是目前占用跨海通道资源最少的大桥,也是跨海大桥设计的首选桥型。在广泛调研跨海大桥和收集文献资料的基础上,对我国近年来修建的跨海大桥进行了梳理统计,发现我国已经建设的公路跨海大桥大部分的主航道桥是斜拉桥。对部分国内外大跨度公铁两用斜拉桥的结构设计关键技术进行了论述;结合大跨度公铁两用斜拉桥的结构特点,对适用于大跨度公铁两用斜拉桥的结构体系和桥面布置进行了对比分析;提出了影响公铁两用斜拉桥跨度增大的问题与对策 ...
雷俊卿 +1 more
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Sexuality, Gender &Policy, Volume 8, Issue 3, August 2025.ABSTRACT Spanish universities are currently applying different protocols designed to facilitate name and/or gender changes in the documentation of trans, nonbinary, and intersex individuals in their education communities in compliance with the legislation in force. These policies aim to address the discrimination experienced by these people in everyday
Lucas Platero +3 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan现有站房的规模和设施与实际客运需求的矛盾日益突出，因此全国掀起了铁路站房改扩建的浪潮。其中，将原站改扩建为高架候车厅站房的施工工况最为复杂，给施工单位带来非常大的挑战。基于株洲站改扩建工程，研究不停运营业线上盖高架候车厅改扩建施工关键技术，首先剖析了该类铁路改扩建工程的特点及难点，提出了平行于既有站台的大平行、小流水改扩建模式，解决了站厅施工与车站服务同步运营的关键性难题；然后提出了营业线钢柱施工技术、不停运营业线上盖混凝土结构支护体系的模块化技术和高架候车厅屋盖分区提升技术 ...
曹佐盛 +4 more
doaj +2 more sources
Jianzhu Gangjiegou Jinzhan, 2005 重庆江北机场航站楼钢结构由于结构复杂、体量大、构件重、跨内混凝土结构已先期完成、场地条件限制等原因,不宜常规吊装,采用“跨端组装,累积平移”的新工艺和计算机控制液压同步顶推技术进行施工,取得较好效益。本文介绍该工程的结构特点、施工难点、技术方案,以及施工阶段多工况结构分析、整体平移安装工艺、三向承力支承系统、减摩技术、计算机同步控制和姿态调节等关键技术与创新。
吴欣之 +4 more
doaj
Institutions, in time: Designing feedback pathways for shared infrastructure transitions
Policy Studies Journal, Volume 53, Issue 3, Page 654-680, August 2025.Abstract Electric utilities, challenged by a rapidly unfolding energy transition, use many informal institutions to bridge across technologies and sectors. Little is known, however, about how electric utility systems and other polycentric systems' institutions‐in‐use vary and evolve over time.
Matthew Grimley +6 more
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2015 济南黄河公铁两用桥全长128m+3×180m+128m,是石济铁路客运专线工程横跨黄河的重点项目,为我国公铁两用桥上首次采用刚性悬索加劲弦连续钢桁梁结构。提出了3桁5跨的"钢桁梁带加劲弦顶推"刚性悬索加劲弦钢桁架梁桥施工新技术,给出了顶推的关键步骤,采用MIDAS-Civil软件对钢桁梁带加劲弦顶推施工全过程进行了仿真数值分析,解决了带弦顶推最大悬臂工况、加劲弦合龙等系列技术难题,验证了钢桁梁带加劲弦顶推施工新技术的安全性和可靠性。同时提出了落梁后吊杆安装的两个技术方案,通过数值模拟和综合考量 ...
王静峰 +4 more
doaj
浅析农民工群体职业病现象的原因及改进措施——以张海超“开胸验肺”事件为切入点 [PDF]
, 2013 职业病是存在于我国广大劳动者中比较普遍的危害,而农民工现已替代国有企业工人群体,占到职业病发病人群的一半以上。2009年河南籍农民工张海超在重重阻碍下为证明自己患有尘肺病,不惜以开胸验肺自残的方式争取职业病损害赔偿。这一极端事件引发了社会对农民工职业病及生命健康权的广泛关注。现以“开胸验肺“事件为切入点,通过对农民工职业病现状的探讨,试图寻找发病起因及现象背后的本质原因,以提出切实可行的改进措施 ...
张琪悦
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Regulating Tools for Hacking: Limitations, Challenges and Possibilities
Policy &Internet, Volume 17, Issue 2, June 2025.ABSTRACT Tools developed for the purpose of unilaterally exploiting computer systems and their communications will pose a persistent policy and regulatory problem. Regulation of hacking tools to date, however, has been piecemeal, inconsistent and often incoherent.
Diarmaid Harkin, Vas Panagiotopoulos
wiley +1 more source
Jianzhu Gangjiegou Jinzhan, 2011 本文根据结构特点和施工环境,采用技术先进、安全可靠、方便快捷的"高空定点拼装、累积旋转滑移"施工技术,完成了158m大跨度折面型空间网格钢屋盖结构的安装。采用此定点拼装、累积旋转滑移技术,顺利地完成了主体育馆钢屋盖钢结构安装,最大限度地减少了钢结构施工对其它专业施工的影响,在保证施工安全的前提下,节约了安全措施成本,更好地保证了施工质量,保证了合同节点工期。工程实施过程中从未发生过一起安全事故,工程一次交验合格。
王恒, 魏成权
doaj
Wildlife Letters, Volume 3, Issue 2, Page 41-45, June 2025.This graphical abstract illustrates the core message of the manuscript – that fostering a strong sense of environmental responsibility and national pride can serve as crucial tools in the protection of wildlife. At the center is a large tree symbolizing ecological balance, rooted in community values. Surrounding it are people of all ages holding hands,
Aishwarya Maheshwari +2 more
wiley +1 more source