节段箱梁预制拼装技术调研报告2016年9月目录第一章概述..................................................................................................................................................11.1引言........................................................................................................................................................11.2国内外发展现状....................................................................................................................................11.2.1国外发展现状.............................................................................................................................11.2.2国内发展现状.............................................................................................................................3第二章节段箱梁预制及安装方法..................................................................................................................82.1节段箱梁长线预制法............................................................................................................................82.1.1长线法预制工艺........................................................................................................................82.1.2长线法匹配预制技术的特点.....................................................................................................82.2节段箱梁短线预制法............................................................................................................................92.2.1短线法预制工艺........................................................................................................................92.2.2短线法匹配预制技术的特点...................................................................................................102.3节段箱梁安装方法..............................................................................................................................112.4.1悬挂法施工..............................................................................................................................112.3.2悬臂法施工..............................................................................................................................12第三章节段箱梁体外预应力体系研究.........................................................................................................143.1体外预应力混凝土结构......................................................................................................................143.1.1体外预应力混凝土结构的概念及应用...................................................................................143.1.2体外预应力工艺的优点与缺点...............................................................................................163.2体外预应力系统构造..........................................................................................................................173.2.1体外预应力索构造...................................................................................................................173.2.2体外预应力筋的锚固系统.......................................................................................................183.2.3体外预应力筋的转向装置.......................................................................................................193.2.4体外预应力系统的防腐与防护....................
