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（鄭州大學(xué)土木工程學(xué)院， 鄭州 450001）

［摘要］采用正交分解方法，可完備地將平面有限元綜合變形分析結(jié)果分解為三個(gè)基本剛體位移和五個(gè)基本彈性變形（包括豎向彎曲變形），并可將其中的豎向彎曲變形分量用于鋼構(gòu)件穩(wěn)定性分析和實(shí)時(shí)監(jiān)控。通過與現(xiàn)有方法進(jìn)行對(duì)比分析，證實(shí)了該方法的有效性以及工程可行性。

［關(guān)鍵詞］正交分解； 豎向彎曲變形； 平面鋼構(gòu)件； 穩(wěn)定性； 實(shí)時(shí)監(jiān)控

中圖分類號(hào)：TU391文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2017)02-0039-04

Stability analysis and monitoring strategy of plane steel member based on deformation decomposition

Wang Dongwei, Sun Panxu, Chen Na

(School of Civil Engineering, Zhengzhou University, Zhengzhou 450001,  China)

Abstract:The orthogonal decomposition method was used to analyze integrated deformations of plane finite element. The integrated deformations could be completely decomposed into three basic rigid body displacements and five basic elastic deformations. The vertical flexural deformation is one of basic elastic deformations. And the vertical flexural deformation component could be directly applied to the stability analysis and real-time monitoring of the steel members. Compared with existing analysis methods, the validity and engineering practicability of the method were confirmed.

Keywords:orthogonal decomposition; vertical flexural deformation; plane steel member; stability; real-time monitoring

*國家自然科學(xué)基金項(xiàng)目資助(50978232)。

作者簡(jiǎn)介：王東煒，博士，教授，Email：dongweiwang@zzu.edu.cn。