摘要
随着我国人口加速向中心城市和城市群聚集,城市交通问题日益突出。城市桥梁作为城市生命线的重要环节,防灾减灾能力有待提高。通过对中日两国的城市桥梁抗震设计规范进行对比分析,结合日本规范发展变迁的历程,针对我国城市桥梁抗震方面的特点,寻找提升抗震性能的具体方法。同时,对提高支座的水平承载力、减少滑动支座的使用、构建多道防线的抗震措施、改进墩柱配筋、防止地震时桥梁侧向倾覆等问题进行探讨。
With the acceleration of population aggregation to central cities and urban agglomerations in China,the urban traffic problems have become increasingly prominent.As an important part of urban lifeline,the capability of disaster prevention and reduction of urban bridges needs to be improved.Based on the comparative analysis of seismic design codes of urban bridges between China and Japan,combined with the development and change of Japanese codes,and in view of the seismic characteristics of urban bridges in China,the specific methods to improve the seismic performance are found.At the same time,the problems to improve the horizontal bearing capacity of supports,to reduce the use of sliding supports,to take the seismic measures of building multiple defensive lines,to improve the reinforcement of pier columns and to prevent the bridges from lateral overturning in earthquake are discussed.
作者
林康
王德钧
LIN Kang;WANG Dejun
出处
《城市道桥与防洪》
2022年第4期68-70,74,M0008,M0009,共6页
Urban Roads Bridges & Flood Control
关键词
桥梁抗震
支座
墩柱配筋
抗震措施
抗倾覆
anti-seismic bridge
support
reinforcement of pier column
anti-seismic measure
anti-over-turning
