- 摘 要
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（中電投工程研究檢測評定中心, 北京 100840）
［摘要］某大跨輸煤棧橋采用下懸鋼網(wǎng)架結(jié)構(gòu)，該棧橋出現(xiàn)撓曲變形過大現(xiàn)象。通過現(xiàn)場對該網(wǎng)架結(jié)構(gòu)進行截面尺寸、焊縫質(zhì)量、銹蝕程度等參數(shù)的檢測，建立考慮結(jié)構(gòu)現(xiàn)狀的有限元模型,并利用該模型對結(jié)構(gòu)進行分析與承載力驗算，分析了棧橋撓曲變形過大的原因，并提出了處理方案。
［關鍵詞］網(wǎng)架； 撓曲變形； 焊縫； 有限元分析
中圖分類號： TU323 文獻標識碼： A文章編號： 1002-848X(2016)S1-0922-04
Cause analysis and treatment suggestions to excessive deflection deformation
of a large span coal conveying trestle
Zhang Haoming, Li Chenglong, Wang Lizhong, Hu Xin
(Zhong Dian Tou Center for Engineering Research Test and Appraisal, Beijing 100840, China)
Abstract: A large span coal conveying trestle takes suspended steel grid structure, which arises phenomenon of excessive deflection deformation. Such parameters as sectional dimension, weld quality, and degree of corrosion of the grid structure were detected, the finite element model considering structural current situations was established, analysis and bearing capacity of the structure was carried out by the finite element model, the reasons for excessive deflection deformation was analyzed, and the treatment scheme was put forward.
Keywords: grid structure; deflection deformation; weld; finite element analysis
作者簡介： 張好銘，碩士，助理工程師，Email：zhanghaoming@ceedi.cn。
