基于拉丁超立方抽样的高大模板支撑体系承载力有限元分析  

Finite Element Analysis on Bearing Capacities of High-formwork Support System on Latin Hypercube Sampling

作　　者：陆征然[1] 于珈郦 路林翰 林志浩 孙杨[3] LU Zhengran;YU Jiali;LU Linhan;LIN Zhihao;SUN Yang(School of Civil Engineering,Shenyang Jianzhu University,Shenyang,China,110168;School of Management,Shenyang Jianzhu University,Shenyang,China,110168;School of Transportation and Geomatics Engineering,Shenyang Jianzhu University,Shenyang,China,110168)

机构地区：[1]沈阳建筑大学土木工程学院,辽宁沈阳110168 [2]沈阳建筑大学管理学院,辽宁沈阳110168 [3]沈阳建筑大学交通与测绘工程学院,辽宁沈阳110168

出　　处：《沈阳建筑大学学报（自然科学版）》2024年第3期461-469,共9页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(52008269)。

摘　　要：目的研究不同缺陷构配件下高大模板支撑体系承载性能的变化,为高大模板支撑体系的布置、构配件的搭配及使用提供指导,以预防和减少其在实际工程中的坍塌事故。方法基于拉丁超立方抽样,考虑构配件缺陷对三种搭设参数模板支撑体系承载性能的影响,随机取线性屈曲分析中一阶屈曲承载力的0.1%~0.2%作为假想水平力,对构配件性能缺陷进行有限元分析,探究不同搭设参数下支撑体系承载力及失稳模式。结果SPR对承载力的影响大于D和t,并且双因素耦合对承载力的影响大于单因素。立杆步距的变化对支撑体系承载力的影响大于立杆间距。随着影响因素耦合数量的增加,步距对支撑体系承载性能的影响也会随之增大。结论支撑体系搭设过程中将存在缺陷的构配件使用时分散排布,可以防止高大模板支撑体系整体失稳倒塌。Study the changes in the load-bearing performance of high-formwork support systems under different defective components,provide guidance for the layout of high-formwork support systems,the combination and use of components,and prevent and reduce collapse accidents in practical engineering.Based on Latin hypercube sampling,considering the influence of component defects on the bearing performance of three template support systems with different installation parameters,0.1%~0.2%of the first-order buckling bearing capacity in linear buckling analysis is randomly selected as the hypothetical horizontal force.Finite element analysis is conducted on the performance defects of components to explore the bearing capacity and instability mode of the support system under different installation parameters.The influence of SPR on bearing capacity is greater than that of D and t,and the influence of dual factor coupling on bearing capacity is greater than that of single factor.The influence of the change in the distance between upright poles on the bearing capacity of the support system is greater than that of the distance between upright poles.As the number of coupling factors increases,the influence of step distance on the bearing performance of the support system will also increase.During the construction of the support system,the defective components will be dispersed and arranged to prevent the overall instability and collapse of the high-formwork support system.

关 键 词：高大模板支架 初始缺陷 因素耦合 随机有限元 承载力 

分 类 号：TU755.2[建筑科学—建筑技术科学]