嘉兴电厂干煤棚双层柱面网架分析研究

ANALYSIS AND DESIGN OF A DOUBLE LAYER BARREL VAULT WITH A LARGE SPAN

嘉兴电厂干煤棚结构是跨度为１０３．５ｍ，长度为８８．０ｍ，高度为３．５ｍ的三心圆曲面双层网架。网架共有２５５３个节点，１００６２根杆件。本文研究讨论了干煤棚结构的造型，外形设计，结构分析和设计方法。根据该结构的特点和边界条件以及荷载类型，采用了空间结构自动分析ＣＡＤ系统ＡＡＤＳ进行网架的几何形状和型式分析。在确定了结构型式和几何尺寸后，根据现代设计的概念和方法提出了结构的参考截面。为结构在多工况下的校核提供了依据。本文还为采用柱面网架的煤棚结构分析和设计提出了建议。

Abstract The roof of coal storage in Jiaxin Power Station is a double-layer barrel vault.This roof covers a span of 103.5m and has a length of 88.0m, The height of this space truss is 3.5 m and the rise is as high as 37. 27 m. The transversal shape of the barrel vault consists of three circles with a radius of 37.427 m,62.957 m and 37.427 m,respectively。This truss has 2553 nodes and 10062 members. The analysis and design of this barrel vault are disctissed in this paper.The CAD system of Space Structures,AADS is used for analysing and designing the structure.