【摘要】：太陽輻射時非均勻溫度作用是對大跨度鋼結(jié)構(gòu)塔架影響較大的作用之一,由于鋼材的導(dǎo)熱性能好,溫度影響更加顯著.利用有限元軟件建立瞬態(tài)熱結(jié)構(gòu)耦合分析大跨度鋼結(jié)構(gòu)整體模型,利用ASHARE晴空模型分析塔架結(jié)構(gòu)整體模型隨時間變化的溫度場分布規(guī)律.然后利用熱分析得到的溫度場作為溫度荷載施加到整體模型的各個節(jié)點上,獲得塔架整體結(jié)構(gòu)的變形和應(yīng)力分布規(guī)律,給出塔架所在地區(qū)太陽輻射作用下整體結(jié)構(gòu)的最大變形量和最大應(yīng)力值及其分布位置,為施工和設(shè)計提供參考和數(shù)據(jù)支持.
[Abstract]:The effect of inhomogeneous temperature on the tower of long-span steel structure is more obvious due to the good thermal conductivity of steel. The transient thermal structure coupling analysis model of long span steel structure is established by finite element software, and the temperature field distribution law of tower structure whole model with time is analyzed by ASHARE clear sky model. Then the temperature field obtained by thermal analysis is applied to each node of the whole model as a temperature load, and the deformation and stress distribution of the whole tower structure is obtained. The maximum deformation and maximum stress value of the whole structure under the action of solar radiation in the area of tower and its distribution position are given, which can provide reference and data support for construction and design.
【作者單位】： 中國民航大學(xué)機(jī)場學(xué)院;
【分類號】：TU393.3

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本文編號：2259127