空心板梁桥的整体加固设计及加固效果评估  

Integral Reinforcement Design and Reinforcement Effect Estimation of Hollow Slab Beam Bridge

作　　者：吴有松[1,2] 戴小冬[1,2] 

机构地区：[1]湖南省交通规划勘察设计院,湖南长沙410008 [2]中南公路建设及养护技术湖南省重点实验室,湖南长沙410008

出　　处：《城市道桥与防洪》2015年第9期95-97,12-13,共3页Urban Roads Bridges & Flood Control

摘　　要：采用化学灌浆和板底补强相结合的加固技术对某高速公路上一座空心板梁桥进行了加固设计,并通过荷载试验对加固效果进行了评估。实践证明该方法具有对原桥桥下净空高度影响很小、可较大幅度提高桥梁整体承载能力性能和抗弯刚度、对桥上交通影响较小等显著优点,为空心板梁桥的整体加固设计提供了一种新思路。The reinforcement technology of chemical grouting and slab bottom reinforcing is used to carry out the reinforcement design for a hollow slab beam bridge on an expressway,and the reinforcement effect is estimated by the load test The practical case proves that this method has a little influence on the clearance height under the original bridge,can gready improve the integral carrying capacity and flexural rigidity of bridge,and affects a little the traffic on bridge,which provides a new idea for the integral reinforcement design of hollow slab beam bridge.

关 键 词：空心板桥 加固设计 化学灌浆加固 板底补强加固 

分 类 号：U448.213[建筑科学—桥梁与隧道工程]