中小跨度桥梁重装备通过性快速检测评估研究  

Rapid Detection and Evaluation Technology of Trafficability of Heavy Equipment on Small and Medium-span Bridge

作　　者：陈晓华[1] 李海超 刘锡鑫 

机构地区：[1]军事交通学院研究生管理大队,天津300161 [2]军事交通学院国防交通系,天津300161

出　　处：《军事交通学院学报》2013年第9期10-14,共5页Journal of Military Transportation University

基　　金：军队科研计划项目

摘　　要：从分析中小跨度桥梁重装备通过性研究的必要性入手，提出了对于正常运营的桥梁，采用比较重装备荷载与设计荷载产生的跨中弯矩和梁端剪力的方案评估重装备的通过性；对于危旧桥梁，以挠跨比为评估参数，通过小荷载试验与仿真试验相结合的方法，判定桥梁的重装备通过能力；对于受突发事件影响的桥梁，通过动力试验与挠跨比评估相结合的方式，评估桥梁的重装备通过性。By analyzing the necessity of the traflicability of heavy equipment on small and medium bridge, this paper put forward 3 kinds of evaluation programs against 3 kinds of bridges. For normal operation bridges, evaluated the trafficabi]ity of heavy equipment by comparing the mid - span bending moment and beam end shear produced by the heavy equipment and designed load; for dilapidated bridges, evaluated the traffieability of heavy equipment by deflection - to - span ratio program; for the bridges affected by emergencies, evaluated the traffieability of heavy equipment by the combination of lhe program of dynamic test and the program of the deflection - to - span ratio. The paper provides reference for deepening this issue study.

关 键 词：中小跨度桥梁 重装备 仿真试验 小荷载试验 挠跨比 动力试验 

分 类 号：U446[建筑科学—桥梁与隧道工程]