反支点预压法在高墩大跨桥梁施工中的应用  

Application of Anti-fulcrum Precompression Method in Construction of High-pier and Long-span Bridge

作　　者：李振军[1] 

机构地区：[1]中铁十九局集团第六工程有限公司,江苏无锡214028

出　　处：《建筑技术开发》2017年第4X期119-120,共2页Building Technology Development

摘　　要：反支点预压法是一种应用于高墩式大跨桥梁中的新型预压措施,由于该措施相比较其他技术,具有更高的安全性、较低的成本支出、较好的模拟加载效果,且该措施的应用提高了施工的技术和进度,减少了工程建设过程中相关的资金成本,因此该措施可广泛地应用于各类不同形式的超重预压结构。以某一级高速公路的大跨度桥梁为例,全面介绍了在高墩大跨桥梁施工中反支点预压法的实际应用情况,为后续同类大跨桥梁施工工程起到借鉴作用。Anti-fulcrum preloading method is a new type of preloading method applied to high-pier large span bridge.Compared with other technologies,this measure has higher safety,lower cost,better simulation loading effect,and the application of this measure improves the construction technology and schedule,reduces the related funds in the construction process cost,so the measure can be widely used in various forms of overweight preload structure.This paper introduces the practical application of the anti-fulcrum precompression method in the construction of high-pier and long-span bridge,and it can serve as a reference for the similar large-span bridge construction project in the future.

关 键 词：反支点预压法 高墩大跨桥梁 模拟加载 

分 类 号：U445.4[建筑科学—桥梁与隧道工程]