884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

(1 結(jié)構(gòu)工程災(zāi)變與控制教育部重點(diǎn)實(shí)驗(yàn)室 (哈爾濱工業(yè)大學(xué)), 哈爾濱 150090; 2 土木工程智能防災(zāi)減災(zāi)工業(yè)和信息化部重點(diǎn)實(shí)驗(yàn)室 (哈爾濱工業(yè)大學(xué)), 哈爾濱 150090; 3 北京國家游泳中心有限責(zé)任公司, 北京 100101)

摘要: 為探析國家游泳中心雙奧場館裝配式轉(zhuǎn)換冰場冰面的受力機(jī)理,利用 ABAQUS 軟件建立冰面的模型,分析各類荷載作用下的應(yīng)力狀態(tài)和分布模式,證明了彎曲破壞為裝配式冰場冰面的主要破壞形式,破壞荷載主要來源于大噸位澆冰車的輪壓等集中荷載作用. 基于彈性地基上的薄板理論和混凝土路面彎曲應(yīng)力的相關(guān)計(jì)算方法,提出冰場人工冰面最大彎曲拉應(yīng)力的計(jì)算公式. 通過改變冰面和擠塑板的相關(guān)參數(shù),進(jìn)行精細(xì)有限元分析,驗(yàn)證了冰面最大彎曲應(yīng)力計(jì)算方法的準(zhǔn)確性. 所得成果為確定冰場人工冰的力學(xué)性能指標(biāo)和進(jìn)一步研究冰層破壞機(jī)理奠定了基礎(chǔ).

關(guān)鍵詞: 國家游泳中心; 裝配式冰場; 人工冰面; 受力模式; 彎曲應(yīng)力; 力學(xué)性能指標(biāo)

中圖分類號(hào):TU399 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002?848X(2022)08?0036?06

DOI:10. 19701 / j.jzjg.20200624

Force model and bending stress calculation method of artificial ice surface in ice rink ofNational Aquatics Center

WEI Bo1,2, ZHANG Wenyuan1,2, YANG Qiyong3, DING Yukun1,2

(1 Key Lab of Structures Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education,Harbin 150090, China; 2 Key Lab of Smart Prevention and Mitigation of Civil Engineering Disasters (Harbin Instituteof Technology), Ministry of Industry and Information Technology, Harbin 150090, China; 3 Beijing National AquaticsCenter Co., Ltd., Beijing 100101, China)

Abstract: In order to analyze the force mechanism of the ice surface of the prefabricated conversion ice rink in the NationalAquatics Center double olympic stadium, the ice surface model was established by ABAQUS software. The stress state anddistribution pattern under various loads were analyzed, and it was proved that the bending failure is the main failure form ofthe prefabricated ice surface in the field, and the failure load mainly comes from the concentrated load such as the wheelpressure of the large?tonnage ice pouring truck. Based on the thin plate theory on elastic foundation and the relatedcalculation method of the bending stress of concrete pavement, the calculation formula of the maximum bending tensilestress of artificial ice surface in ice rink was proposed. By changing the relevant parameters of the ice surface and theextruded plastic plate, a fine finite element analysis was carried out, and the accuracy of the calculation method of themaximum bending stress of the ice surface was verified. The obtained results lay a foundation for determining the mechanicalproperties of artificial ice in ice rinks and further studying the ice damage mechanism.

Keywords: National Aquatics Center; prefabricated ice rink; artificial ice surface; force model; bending stress;mechanical performance index

∗北京市科技計(jì)劃項(xiàng)目(D171100001117001),中建股份科技研發(fā)計(jì)劃資助(CSCEC?2019?Z?7).

第一作者:韋博,碩士,助理工程師,主要從事于高層鋼結(jié)構(gòu)及結(jié)構(gòu)監(jiān)測等研究工作,Email:weibo96@ 163.com.

[引用本文] 韋博,張文元,楊奇勇,等. 國家游泳中心冰場人工冰面受力模式和彎曲應(yīng)力計(jì)算方法[ J]. 建筑結(jié)構(gòu),2022,52(8):36?41,73. WEI Bo, ZHANG Wenyuan, YANG Qiyong, et al. Force model and bending stress calculationmethod of artificial ice surface in ice rink of National Aquatics Center[J]. Building Structure,2022,52(8):36?41,73.