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

(天津大學(xué)建筑工程學(xué)院, 天津 300072)

摘要: 某項(xiàng)目鋼結(jié)構(gòu)屋面采用張弦梁結(jié)構(gòu)體系,張弦梁的撐桿在平面外和平面內(nèi)均呈 V 字形,下弦節(jié)點(diǎn)在施工時(shí)采用可滑動(dòng)的節(jié)點(diǎn)以保證施工時(shí)初拉力的順利傳遞. 結(jié)構(gòu)的計(jì)算分析過程在 Grasshopper 參數(shù)化平臺(tái)上展開;找形分析通過動(dòng)力學(xué)模擬插件 Kangaroo 利用逆吊找形法實(shí)現(xiàn),保證了參數(shù)化建模和結(jié)構(gòu)計(jì)算分析的連續(xù)性;下弦拉索找力分析依靠 Grasshopper 的參數(shù)化功能通過手動(dòng)調(diào)整法和模擬退火算法完成,模擬退火算法操作簡單且計(jì)算速度快;對(duì) V 形支撐張弦梁下弦拉索進(jìn)行了不平衡索力下的拉索滑移模擬,采用優(yōu)化的冷凍-升溫法,通過編程完成索力的提取、虛擬初應(yīng)變的計(jì)算和施加以及結(jié)構(gòu)的有限元分析等反復(fù)迭代過程,完成了下弦拉索節(jié)點(diǎn)兩端索力平衡的目標(biāo),也證明了本方法的可行性和高效性.

關(guān)鍵詞: 張弦梁結(jié)構(gòu); 參數(shù)化設(shè)計(jì); 找形分析; 找力分析; 拉索滑移模擬

中圖分類號(hào):TU391 文獻(xiàn)標(biāo)志碼:A 文章編號(hào):1002-848X(2023)11-0001-06

DOI:10. 19701 / j. jzjg. 20201746

Parametric design of beam string structure roof in a project

WANG Xiaodun, ZHU Ju, CHEN Zhihua

(School of Civil Engineering, Tianjin University, Tianjin 300072, China)

Abstract: Beam string structure system is adopted in the steel structure roof of a project, and its struts are all V-shapedoutside and inside the plane. The lower chord joint is slidable during construction to ensure the smooth transmission of theinitial tension. The structural calculation and analysis process are carried out on the Grasshopper parametric platform. Theform-finding analysis is conducted by using the inverse hanging form-finding method in the dynamic simulation plug-inKangaroo, which ensures the continuity of parametric modeling and structural calculation. The force-finding analysis of thelower string cable depends on the parametric function of Grasshopper through manual adjustment method and simulatedannealing algorithm, simulated annealing algorithm is simple to operate and fast in calculation. The cable slip simulation ofbeam string structure with V-shaped support was carried out, and the optimized frozen-heated method was adopted, therepeated iterative process of cable force extraction, virtual initial strain calculation and application, and structural finiteelement analysis was completed through programming, which completes the goal of cable force balance and also proves thefeasibility and efficiency of the method.

Keywords:beam string structure; parametric design; form-finding analysis; force-finding analysis; cable slip simulation

第一作者:王小盾,博士,教授,主要從事空間結(jié)構(gòu)、組合結(jié)構(gòu)、模塊結(jié)構(gòu)和木竹結(jié)構(gòu)的相關(guān)研究,Email: maodun2004@126. com.

[引用本文] 王小盾,朱菊,陳志華. 某項(xiàng)目張弦梁結(jié)構(gòu)屋面參數(shù)化設(shè)計(jì)[J]. 建筑結(jié)構(gòu),2023,53(11):1-6. WANGXiaodun,ZHU Ju,CHEN Zhihua. Parametric design of beam string structure roof in a project[ J]. Building Structure,2023,53(11):1-6.