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（四川省建筑設(shè)計(jì)研究院， 成都 610000）

［摘要］在剛性框架的適當(dāng)位置設(shè)置鉸點(diǎn)，節(jié)點(diǎn)可由偏心受壓變?yōu)橹行氖軌?，解除截面?yīng)力集中現(xiàn)象；同時(shí)，鉸點(diǎn)還具有轉(zhuǎn)動(dòng)變形功能，可調(diào)節(jié)結(jié)構(gòu)體系變形能力，使結(jié)構(gòu)體系剛?cè)岵?jì)協(xié)調(diào)工作。結(jié)合實(shí)例，詳細(xì)論述了鉸的基本原理、計(jì)算方法及其在工程中的應(yīng)用：在多高層框架邊柱頂節(jié)點(diǎn)采用鉸接，避免應(yīng)力集中；在柱腳（即基礎(chǔ)頂面）設(shè)置鉸點(diǎn)，將剛性基礎(chǔ)轉(zhuǎn)化為鉸接基礎(chǔ)，耗散房屋的地震能量；在剪力墻連梁兩端點(diǎn)鉸，把超靜定連梁變?yōu)閱蝹€(gè)簡(jiǎn)支過梁，解決剪力墻連梁因截面尺寸過大而造成剪力值超限的難題；大底盤兩棟塔樓間的走廊連接采用鉸接改善結(jié)構(gòu)受力狀況；連體建筑空中廊橋的采用鉸接桁架減小整體結(jié)構(gòu)的扭轉(zhuǎn)效應(yīng)。

［關(guān)鍵詞］鉸接框架； 鉸接機(jī)構(gòu)； 框架結(jié)構(gòu)； 電算方法； 應(yīng)力集中

中圖分類號(hào)：TU352-11文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2021)01-0041-04

Design and application of hinged frame

WAN Hengjun

(Sichuan Provincial Architectural Design & Research Institude, Chengdu 610000, China)

Abstract:If the hinge point is set at the appropriate position of the rigid frame, the node can be changed from eccentric compression to central compression, which relieves the cross-sectional stress concentration phenomenon. At the same time, the hinge point also has the function of rotation and deformation, which can adjust the deformation ability of the structural system to lead to the coordination work of the structural system both rigidly and flexibly. Combined with practical examples, the basic principles, the calculation methods of hinges and the application of hinges in engineering were discussed in detail: hinged joints were used at the top nodes of side columns of multi-story frames to avoid stress concentration; hinge points were set at the column feet (i.e. the top surface of the foundation) to transform the rigid foundation into a hinged foundation to dissipate the seismic energy of the house; hinges set at both ends of the shear wall turned the coupling beam to single simply-supported beam to solve the out-of-code problem of shear value due to the excessive cross-sectional dimensions of the shear wall coupling beams; the corridor connection between the two towers of the large chassis used hinged joints to improve the structural stress condition; the hinged truss of the air bridge of the connected building reduced the torsion effect of the overall structure.

Keywords:hinged frame; hinged mechanism; frame structure; computer-aid calculation method; stress concentration