- 摘 要
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（1 河北工業(yè)大學, 天津 300401； 2 河北省土木工程技術(shù)研究中心， 天津 300401；3 北方工程設(shè)計研究院有限公司， 石家莊 050011）
［摘要］提出在傳統(tǒng)銷軸支座的上下耳板間距中加入疊層橡膠墊的新型銷軸支座。由于傳統(tǒng)銷軸連接的研究成果不能充分適用于新型銷軸支座，并且目前仍缺乏對銷軸支座極限承載力的研究，主要運用試驗與有限元模擬的手段研究新型銷軸支座在豎向受壓時的極限承載力。通過比較試驗與有限元模擬得到的荷載
\|位移曲線及部分應(yīng)變片的測量結(jié)果，驗證了模擬過程中參數(shù)選擇的合理性，表明有限元法可以較好地再現(xiàn)支座豎向受壓的全過程反應(yīng)。進一步運用有限元模擬結(jié)果分析新型銷軸支座的屈服機制與失效機制，總結(jié)支座的內(nèi)力分布規(guī)律與荷載傳遞規(guī)律；并運用有限元模擬對比新型銷軸支座與傳統(tǒng)支座在豎向壓力作用下的反應(yīng)。結(jié)果表明，新型銷軸支座具有足夠的承載能力及安全儲備，到達極限狀態(tài)時塑性變形明顯，支座在豎向壓力作用下呈現(xiàn)延性破壞的特征。
［關(guān)鍵詞］銷軸支座； 極限承載力； 試驗； 有限元
中圖分類號：TU317+.2 文獻標識碼：A 文章編號：1002-848X(2015)03-0068-05
Study on vertical ultimate bearing capacity of a new pin bearing
Tian Wenling1,2, Zhang Yao1, Xing Chao3， Kong Dandan1,2, Qing Longbang1,2
(1 Hebei University of Technology, Tianjin 300401, China; 2 Civil Engineering Technology Research Center of
Abstract:A new pin bearing was put forward with adding laminated rubber pad in spacing of ear plates of the traditional pin bearing. The research achievements of the traditional pin connection could not be fully applied to the new pin bearing, and research on the ultimate bearing capacity of the pin bearing was lack. The ultimate bearing capacity of the new pin bearing under the vertical compression was studied through the test and finite element simulation. The loaddisplacement curve and measurement results of parts of strain gauges obtained by the test and finite element simulation were compared to verify the rationality of selection of parameters in the simulation process and indicate that finite element method can well reproduce the whole process reaction of the bearing under vertical compression. The yield mechanism and failure mechanism of the bearing were analyzed by using finite element simulation results to summarize the internal force distribution law and load transfer law. Reactions of the new and traditional bearings under vertical compression were compared using finite element simulation method. Results show that the new bearing has enough bearing capacity and safety reserve. The plastic deformation of the bearing is obvious to reach the ultimate state. The bearing features the ductile failure characteristics under vertical compression.
Keywords:pin bearing; ultimate bearing capacity; experiment; finite element
*國家自然科學基金（51309073）。
通訊作者:張瑤，碩士, Email:18822306283@163.com。
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