摘要
对钢管井架的稳定性能和承载力进行有限元分析。建立了以非线性梁单元为基础的钢管井架有限元计算模型,采用有限元分析软件对其稳定性能进行计算,分析几种主要工程加强措施对井架整体稳定性的作用效果。计算结果表明:井架整体稳定系数约为单杆稳定系数的65%;井架高度、立杆根数(间距)和拉墙杆间距对井架极限承载力的影响很大,工程中可通过增加拉墙杆数量,减小横杆间距等措施提高井架的稳定性和承载力,进而增加井架的工作高度。
The stability and load-carrying ability of a tubular steel derrick are the main parameters determining the safety of a steel derrick. A finite element computing model based on the non-linear beam element was built. The stability of the tubular steel derrick was computed by computer. Furthermore, some methods for strengthening the stability of a derrick were analyzed. Results indicated that the stability factor of whole derrick is only 65% as that of the single pole; the height of the derrick, amount of the poling and the distance between the tie wall rods have significant effect on load- carrying ability of a tubular steel derrick. In practice, by increasing the number of tie wall rod and decreasing the distance between ralls will strengthen the stability and load-carrying ability of a tubular steel derrick, thus the working height of a derrick will be increased.
出处
《中国农业大学学报》
CAS
CSCD
北大核心
2007年第2期88-91,共4页
Journal of China Agricultural University
关键词
井架
承载力
有限元计算模型
非线性分析
稳定系数
derrick
load-carrying capability
finite element computing model
nonlinear analysis
stability factor
