摘要
基于新施行的《公路桥梁承载能力检测评定规程》(JTG/T J21-2011),对整体式板桥进行静力荷载试验研究,利用桥梁结构专用分析软件Midas civil建立该整体式板桥的空间板单元模型,对静力荷载试验进行模拟,并将实测挠度、应力值和荷载横向分布系数与计算值进行对比分析。分析结果表明,该桥能够满足公路-Ⅰ级汽车荷载的使用要求;实测荷载横向分布系数与理论计算荷载横向分布系数相一致,且刚接板梁法计算值略大于有限元法计算值,设计时若按照简化刚接板梁法计算荷载横向分布系数偏于安全。
Based on the newly implemented specification for inspection and evaluation of the load-bearing capacity of highway and bridge （JTG/T J21 -2011 ）, the static load testing was carried out on the monolithic plate bridge. The Midas civil software was used to construct the spatial plate unit model and simulate the static load testing. The measured deflection, stress, and load transverse dis- tribution factors were compared with the calculated value. The analysis results indicated that the monolithic plate bridge can meet the operating requirement of standard highway level I load, and the measured load transverse distribution factors were in line with the cal- culated values and the values derived by rigid-connected beam method was slightly higher than that of the finite element method. Therefore, it is safety to use the rigid-connected beam method to calculate the load transverse distribution factor during design.
出处
《森林工程》
2012年第4期47-50,共4页
Forest Engineering
关键词
整体板桥
静力荷载试验
校验系数
有限元
monolithic plate bridge
static load testing
calibration coefficient
finite element
