开孔对双层球面网壳结构静力特性的影响分析  

Effects of Openings on the Static Characteristics of DoubleLayer Spherical Reticulated Shell Structures

作　　者：刘娟[1,2,3] 杨宁 Liu Juan;Yang Ning(Jiangsu Vocational Institute of Architectural Technology,Xuzhou 221116,China;Xuzhou New Building Industrialization and Informatization Engineering Research Center,Xuzhou 221116,China;Institute of Building Industrialization and Information Ap-plication Technology,Xuzhou 221116,China;Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]江苏建筑职业技术学院,江苏徐州221116 [2]徐州市新型建筑工业化与信息化工程研究中心,江苏徐州221116 [3]建筑工业化与信息应用技术研究所,江苏徐州221116 [4]山东科技大学山东省土木工程防灾减灾重点实验室,山东青岛266590

出　　处：《海南大学学报（自然科学版）》2022年第3期309-316,共8页Natural Science Journal of Hainan University

基　　金：2020年江苏建筑职业技术学院科技资助项目(JYJPZX20-02);2018年江苏省住房和城乡建设厅科技计划资助项目(2018ZD262)。

摘　　要：为了解开设孔洞对落地双层球面网壳的受力影响规律,以某水泥厂石化均化库为例,利用有限元软件ANSYS对其进行静力特性分析.研究了活荷载控制下弹性阶段网壳结构的内力,进一步对无孔洞、开设孔洞时网壳结构杆件内力变化进行对比讨论,得出开设孔洞对网壳结构内力的影响规律:开设孔洞后,下弦肋杆轴力变化最大,其次为上弦肋杆,环杆和腹变化最小,且各类杆件内力增幅较大者集中在洞口上部、侧部及洞口附近两环杆件,即洞口处出现了应力集中.In order to understand the effect law of opening holes on the stress of floor double-layer spherical reticulated shell,in the report,the petrochemical homogenization warehouse of a cement plant was used as an example,the static characteristics were analyzed with the finite element software ANSYS. The internal force of the reticulated shell structure in the elastic stage under the control of live load was studied. Further,the internal force changes of the reticulated shell members without holes and with holes were compared and discussed,and the effect law of opening holes on the internal force of the reticulated shell structure was obtained:after opening holes,the axial force of the lower chord rib changes are the biggest,followed by the upper chord rib,and the changes of the ring and web are the smallest,the larger increase of internal force of various members is concentrated in the upper part,side and two ring members near the hole,that is,the stress concentration appears at the hole.

关 键 词：有限元 双层球面网壳 杆件内力 

分 类 号：TU399[建筑科学—结构工程]