基于集成化响应面法的薄壁箱梁结构随机剪力滞分析  

Stochastic Shear-lag Analysis of Box-Section Beams with Systematic Response Surface Method

作　　者：程进[1] 肖汝诚[1] 

机构地区：[1]同济大学,上海200092

出　　处：《应用力学学报》2007年第2期249-252,共4页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(50408037)

摘　　要：传统薄壁箱梁结构剪力滞分析方法由于忽略了结构参数的不确定性而不能满足实际工程设计需要。本文将响应面法(RSM)、有限元法(FEM)和蒙特卡罗法(MCS)各自的优点相结合,提出一种新的结构随机剪力滞分析方法-集成化响应面法,并将其成功地应用到一简支梁结构的随机剪力滞分析中,得出了一些有益的结论。For ignoring the effect of structural parameter randomness, the conventional deterministic analysis cannot offer complete information about shear-lag characteristics of box-section beams. A stochastic finite-element-based algorithm for probabilistic shear-lag analysis is proposed via combining the advantages of response surface method, finite element method and Monte Carlo simulation. Probabilistic shear-lag analysis of a simply supported beam is performed to investigate the effects of various parameters on the statistical moments of the stress response of box-section beams, and some conclusions are drawn.

关 键 词：薄壁箱梁 剪力滞 随机分析 响应面 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]