某石油钻机K形井架的推覆分析  

PUSHOVER ANALYSIS ON A K-TYPE DERRICK OF OIL RIG

作　　者：李鹏举[1,2] 侯敏[1,2] 杨鹏[1,2] 张栓方 

机构地区：[1]中国石油宝鸡石油机械有限责任公司研究院,陕西宝鸡721002 [2]国家油气钻井装备工程技术研究中心,陕西宝鸡721002

出　　处：《钢结构》2015年第12期32-35,共4页Steel Construction

摘　　要：目前,石油钻机设计普遍采用静力学分析、容许应力法,无法考虑钻机井架结构在罕遇地震作用下的表现。对某石油钻机K形井架结构进行Pushover分析,在两个方向设置目标位移,采用4种不同的侧向推覆力加载模式,探讨推覆力加载模式对石油钻机井架Pushover分析结果的影响,得到该井架在罕遇地震作用下的薄弱部位及破坏情况。与仅进行线弹性分析的计算相比,Pushover分析能更明确地了解结构的薄弱部位,对采用基于性能的抗震设计方法应用于石油钻机K形井架,有一定的借鉴意义。At present,statics analysis and allowable stress method have been widely used in the design of oil rig without considering the performance of the structure under severe earthquake.In this paper,a Pushover analysis of a K-type of oil rig was carried out.This paper set up a target displacement in two directions by using four different lateral force loading modes and also discussed the influence of different force models on the results.The results showed the weak parts and damage situation of the derrick under severe earthquake.Compared with the calculation of linear elastic analysis,the proposed analysis method can more clearly understand the weak parts of the structure,which has the certain reference value to the performance-based seismic design method,adopting to the K-type derrick of oil rig.

关 键 词：石油钻机 井架 静力弹塑性 PUSHOVER分析 

分 类 号：TE923[石油与天然气工程—石油机械设备]