【摘要】：為探尋弧形鋼閘門在靜水壓力作用下未開啟狀態(tài)的應力及變形規(guī)律,并在此基礎上探尋改良優(yōu)化措施以保障閘門運行安全,通過ABAQUS軟件對某水庫弧形鋼閘門進行三維有限元應力、變形分析,由閘門在靜水壓力作用下應力及變形分布規(guī)律,得出面板及主橫梁—支臂接縫處存在較大應力區(qū)。為此,從改善截面屬性角度出發(fā),針對主橫梁—支臂接縫處應力集中現(xiàn)象提出加厚支臂及加角鋼兩種工程處理方式,發(fā)現(xiàn)閘門支臂最大應力區(qū)向支座處上移及整體應力減小現(xiàn)象,由此可得兩種工程處理方式均能有效改善閘門支臂受力情況并保障工程安全,但從施工操作及改善效果而言,推薦采用加角鋼的方式對閘門進行局部處理。
[Abstract]:In order to explore the stress and deformation law of the arc steel gate in the unopened state under the action of hydrostatic pressure, and on this basis, to explore the improved optimization measures to ensure the safety of the gate operation, the three-dimensional finite element stress and deformation analysis of the arc steel gate of a reservoir are carried out by ABAQUS software. From the stress and deformation distribution law of the gate under the action of hydrostatic pressure, it is concluded that there is a large stress area at the panel and the main crossbeam-arm joint. Therefore, from the point of view of improving section attributes, two engineering treatment methods of thickened support arm and angle steel are put forward to solve the stress concentration phenomenon at the joint of main crossbeam and support arm. It is found that the maximum stress area of gate support arm moves upward to the support seat and the overall stress decreases, from which it can be obtained that the two engineering treatment methods can effectively improve the stress condition of gate support arm and ensure the safety of the project, but from the point of view of construction operation and improvement effect, It is recommended that the gate be treated locally by adding angle steel.
【作者單位】： 南京水利科學研究院;河海大學水利水電學院;
【基金】：水利部公益性行業(yè)科研專項(20150133) 國家重點研發(fā)計劃(2016YFC0401605,2016YFC0401603) 中央級公益性科研院所基本科研業(yè)務費專項資金重點項目(Y715005,Y716011) 國家自然科學基金項目(51679151)
【分類號】：TV663.2

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