高速铁路钢管混凝土尼尔森体系系杆拱纵向水平抗震能力评估  

Evaluation of Longitudinal and Horizontal Seismic Resistance Capacity of Concrete Filled Steel Tubular Nielsen System Tied Arch for High Speed Railway

作　　者：史航 SHI Hang(China Design Group Co.Ltd,Nanjing 210000,China)

机构地区：[1]华设设计集团股份有限公司,南京210000

出　　处：《工程建设与设计》2023年第2期80-83,共4页Construction & Design for Engineering

摘　　要：为研究高铁钢管混凝土尼尔森体系系杆拱纵向水平抗震能力,论文以国内某高铁尼尔森系杆拱为工程背景,基于该拱桥各组成部分的弹性内力,通过分析极限状态下恒载及地震作用引起的内力占比来初步估计整体抗震能力。并通过等效线性化方法,采用能量一定和位移一定原则,近似估计该拱桥各部分延性对整体抗震能力的影响。通过以上两步,实现对该拱桥抗震能力的评估。分析结果表明,由于系梁参与受力,高速铁路钢管混凝土尼尔森体系系杆拱具有良好的抗震能力,纵向水平地震作用并不控制梁部设计。In order to study the longitudinal horizontal seismic resistance of the high-speed railway concrete-filled steel tube Nielsen tied arch, this paper takes a high-speed railway Nielsen tied arch as the engineering background, based on the elastic internal force of each component of the arch bridge, and preliminarily estimates the overall seismic resistance by analyzing the proportion of internal force caused by dead load and earthquake action under the limit state. Through the equivalent linearization method, the influence of the ductility of each part of the arch bridge on the overall seismic capacity is estimated approximately by using the principle of constant energy and constant displacement. Through the above two steps, the seismic capacity of the arch bridge can be evaluated. The analysis results show that the tie bar arch of concrete filled steel tube Nielsen system has good seismic resistance because of the tie beam participating in the force, and the longitudinal horizontal seismic action does not control the beam design.

关 键 词：高速铁路 钢管混凝土 尼尔森体系系杆拱 抗震能力评估 

分 类 号：U442.55[建筑科学—桥梁与隧道工程] U448.13[交通运输工程—道路与铁道工程]