- 摘 要
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［摘要］針對實際工程需要，為進一步明確張拉成形網格結構成形過程中結構位移特點，采用整體分次和分批分次兩種張拉方案，并由不同張拉方式對結構節(jié)點豎向位移的影響出發(fā)，通過參數化設計語言APDL進行編程，從結構豎向位移值和豎向位移對比值兩個角度對結構豎向位移特點作了較為詳盡的分析。結果表明：從張拉方式對豎向位移的影響出發(fā)，分批分次張拉成形方案切實可行，結構的豎向位移主要集中于跨中部分，成形全過程研究尤為必要，另外跨中部分的結構選型應予以重視。
［關鍵詞］網格結構；分批分次張拉；成形；豎向位移
中圖分類號：TU394文獻標識碼：A文章編號：1002-848X(2011)10-0058-04
Study on forming process of stretch forming latticed structure based on vertical displacement
Wang Cheng1, Zhang Yigang2（1 National Center for Quality Supervision and Test of Building Engineering,China Academy of Building Research, Beijing100013, China； 2 Space Structure Research Center, Beijing University of Technology, Beijing 100124, China)
Abstract:In order to put stretch forming latticed structure (SFL) into practice, and find vertical displacement characteristic on forming process of SFL, two forming methods, tensioning group by group and tensioning simultaneously which all are step by step, were put forward and selected. Based on the effect on structural node vertical displacement by different tensioning method, a detail analysis on absolute and relative displacement was carried out by parametric design language APDL programming. The study shows that the method tensioning group by group is a feasible program from the point of vertical displacement affected by tensioning method. On the forming process of SFL, the vertical displacement is mainly distributed on the midspan. It is necessary to study on the whole forming process of SFL. Additionally, it is important to reasonably select structural configuration of mid\|span of SFL.
Keywords:latticed structure; tensioning group by group and step by step; forming; vertical displacement
作者簡介：王成，博士，高級工程師，Email:KingSuc@sohu.com。
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