自锁式与常规齿块预应力体系优劣分析  

Analysis on Advantages and Disadvantages of Self-locking and Conventional Gear Block Prestressing Systems

作　　者：张燕 刘晓霞[2] ZHANG Yan;LIU Xiaoxia

机构地区：[1]江苏南通苏通科技产业园区建设环保局,江苏南通226000 [2]中铁大桥局集团第二工程有限公司,江苏南京210015

出　　处：《城市道桥与防洪》2020年第8期248-250,M0024,共4页Urban Roads Bridges & Flood Control

摘　　要：预制桥墩连接竖向预应力体系有两种方式:新型自锁式预应力体系和常规齿块预应力体系,从设计、施工等方面着重介绍这两种预应力体系的特点,通过两种体系的优缺点分析,提出新型自锁锚固式预应力体系施工中存在的问题和解决方法。There are two modes of precast bridge pier to connect the vertical prestressing system,such as the new self-locking prestressing system and the conventional gear block prestressing system.The characteristics of these two prestressing systems are specially introduced from the design and construction.By analyzing the advantages and disadvantages of these two systems,the problems existing in the construction of the new self-locking anchoring prestressing system and the solutions are put forward.

关 键 词：自锁式预应力体系 齿块式预应力体系 墩身预制安装 

分 类 号：U445[建筑科学—桥梁与隧道工程]