2020欧洲杯直播时间

工程案例

钢结构网架结构支座设计

2019-07-31 13:03:41
  • 地点:武汉
  • 面积:2600
  • 价格:320元/平方米
  • 结构:钢结构网架

网架( 网 壳)结构作为一种高次超静定空间杆系结构,由于其受力性能好(理论上杆件只受轴力作用)、刚度大、整体性及抗震性能好、承载力强、受支座不均匀沉降影响小、适应性强,而计算理论的日益完善以及计算机技术飞速发展,使得对任何极其复杂的三维结构的分析与设计成为可能,因此网架结构被广泛应用于工业与民用建筑领域中。但网架结构如果其支承结构、支座型式及边界条件设计不合理会对网架结构的安全性和经济性造成重要影响。

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弹性支座在提供反力的同时产生相应的位移,反力与位移的比值保持不变,称为弹性支座的刚度系数。弹性支座既可提供移动约束,也可提供转动约束。武汉网架工程公司,当支座刚度与结构刚度相近时,宜简化为弹性支座。当结构某一部分承受荷载时(如研究结构稳定问题),其相邻部分可看作是该部分的弹性支承,支座的刚度取决于相邻部分的刚度(如将斜拉桥的斜拉索简化为弹簧支座)。当支座刚度远大于或远小于该部分的刚度时,弹性支座则向前四种理想支座转化。

2020欧洲杯直播时间TU DANXINGZHIZUOYULIXIANGZHIZUO

网架结构一般都支承在柱顶或圈梁等下部支承结构上,支座节点即指位于支承结构上的网架节点。湖北网架工程公司,网架结构屋面,钢网架,钢结构2020欧洲杯直播时间网架工程它既要连接在网架支承处汇交的杆件,又要支承整个网架,并将作用在网架上的荷载传递到下部支承结构。因此,支座节点是网架结构与下部支承结构联系的纽带,也是整个结构中的一个重要部位。一个合理的支座节点必须是受力明确、传力简捷、安全可靠,同时还应做到构造简单合理,制作简单方便,具有较好的经济性。

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网架结构设计是否安全、经济,最关键因素首先在于所选的支承结构、支座型式及边界条件是否合理,武汉蓝欧网架公司,湖北网架工程,为此在具体设计中我们尽可能避免将上部网架结构与下部支承系统单独分析、设计,尤其当网架支座相对于下部结构的位移很难通过弹性约束方法模拟时,更应当将支承结构与上部网架一起进行整体建模、计算分析,以使所计算出来的结果更符合实际。