- 摘 要
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(深圳市同濟人建筑設計有限公司,深圳 518000)
摘要: 新型平扭結(jié)合滑動支座適用于體量較小的鋼連廊結(jié)構，連廊端部支承于混凝土支座的聚四氟乙烯板上，并設置“一窄兩寬”的三個長圓孔。孔套入固定在混凝土支座上的三個銷軸中，實現(xiàn)以中間銷軸為圓心，兩端繞圓心轉(zhuǎn)動的變形模式。對采用新型支座的兩個工程案例的連廊支座位移進行分析，結(jié)果表明:新型支座可適應罕遇地震作用下的各向變形需求，同時起到防墜落的作用。采用新型支座時，連廊結(jié)構與支座間錯位產(chǎn)生的摩擦力對主體結(jié)構影響相對小，進行主體結(jié)構分析時可忽略水平力。連廊與主體結(jié)構之間設置變形縫，縫寬可與主體結(jié)構變形量相同，當連廊與主體結(jié)構產(chǎn)生較大位移后，可采用液壓千斤頂對連廊主梁端部進行回頂，使其恢復至初始位置。新型支座通過合理的設計可滿足防水、防腐等需求，具有結(jié)構高度需求小、構造簡單、建造成本低等優(yōu)勢。
關鍵詞: 平扭結(jié)合滑動支座； 鋼連廊結(jié)構； 摩擦力； 混凝土支座； 支座選型
中圖分類號:TU318+. 1 文獻標志碼:A 文章編號:1002-848X(2022)19-0092-06
DOI:10.19701 / j.jzjg.20212015
Design and research on a new type of flat-torsional sliding bearing
WANG Wenyu,SUN Ping,LIANG Wenjie
(Tongji Architects Co. ,Ltd. Shenzhen,Shenzhen 518000,China)
Abstract: The new type of flat-torsional sliding bearing is suitable for small-sized steel corridor structure. Both ends of thecorridor are supported on the polytetrafluoroethene(PTFE) plate of the concrete bearing where three rounded rectangle holesof " one narrow and two wide" are set. These holes are combined with three shafts that are fixed on the concrete bearing torealize the deformation mode in which the middle shaft is the center of the circle and the two ends rotate around the centerof the circle. The displacement of the corridor bearing in two engineering cases using the new supports was analyzed. Theresults show that the new supports can adapt to the demand for deformation in all directions under the action of rareearthquakes,and at the same time play the role of anti-fall. When the new type of support was used,the friction forcegenerated by the dislocation between the corridor structures and the bearing had relatively little influence on the mainstructure,and the horizontal force can be ignored in the analysis of the main structure. Deformation joint was set betweenthe corridor struction and the main struction,and the width of the joint can be the same as the deformation amount of themain structure. When there is a large displacement between the corridor and the main structure,the hydraulic jack can beused to return the end of the main beam of the corridor to the original position. The new bearing can meet the requirementsof waterproof and anti-corrosion through reasonable design,and has the advantages of low command of structure height，simple structure and low costs of construction.
Keywords:flat-torsional sliding bearing； steel corridor structure； friction； concrete bearing； bearing selection
第一作者:王文宇，碩士，一級注冊結(jié)構工程師，主要從事結(jié)構設計工作，Email:329738115@ qq. com。
[引用本文] 王文宇，孫平，梁文杰. 新型平扭結(jié)合滑動支座的設計研究[ J]. 建筑結(jié)構，2022，52( 19):92-97.WANG Wenyu，SUN Ping，LIANG Wenjie. Design and research on a new type of flat-torsional sliding bearing[J]. BuildingStructure，2022，52(19):92-97.
