纸质双层地下空间结构模型设计优化分析  

Optimization and design analysis of papery double-layer underground space structure mode

作　　者：姚韦靖 宋远 王湘吉 彭泉森 陈逸楚 周川皓 YAO Weijing;SONG Yuan;WANG Xiangji;PENG Quansen;CHEN Yichu;ZHOU Chuanhao(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《实验技术与管理》2024年第5期217-225,共9页Experimental Technology and Management

基　　金：安徽省研究生教育教学改革研究项目(2022jyjxggyj261);安徽省高等学校质量工程传统专业改造提升项目(2022zygzts026);安徽省高等学校质量工程教学研究项目(2021jyxm0371);国家级大学创新创业训练计划项目(202310361103)。

摘　　要：以第七届城市地下空间工程大学生模型设计竞赛为背景,以纸质双层地下空间结构模型为分析实例,从模型概念设计、选型制作、理论计算、数值分析等方面,对模型结构进行了优化分析,完成了加载实验。该模型结构满足题目要求,在承受满载100 kg时,模型结构沉降量仅为2.80 mm。参赛实践表明,大学生模型设计竞赛可以像实际工程结构设计一样,通过概念设计、力学分析、数值计算优化等找到合理的结构设计方案,加上精良的制作工艺和反复练习,能够培养学生的创新能力、动手能力以及团结合作精神。[Objective]The structural design competition can foster students’practical innovation ability.Moreover,it can play a key role in advancing the training of majors in civil engineering,the development of disciplines,and the transformation of education.Taking the 7th National Structure Design Competition for Undergraduates of Urban Underground Space Engineering as the background,this paper takes the papery double-layer underground structure of the Anhui University of Science and Technology as an example.The model analysis,production,and competition are presented in detail.[Methods]The model structure is optimized and examined regarding the selection manufacture,conceptual design,theoretical calculation,numerical simulation analysis,and model test.First,the mechanical properties and manufacturing methods of papery rods are discussed to determine the best rod specifications as the main element of the model.Second,the preliminary design of the model is established through the conceptual design.Third,the mechanical analysis of different structures,including cross-section,arch frame of four schemes,and beam–column arrangement of four schemes,is performed.The force diagrams of the structure with diverse schemes are obtained.The model is strengthened and simplified according to the force joined with the difficulty of the model production.A structure model with reasonable mechanical behavior and simple production is obtained.Fourth,ABAQUS numerical simulation software is used to perform a numerical simulation analysis on the model under the four conditions of competition:without loading and with loading of 40,70,and 100 kg.The stress and displacement distributions of the model are obtained.Finally,the model test method is used for many attempts.The main points of the model production are summarized.[Results](1)The theoretical calculation results show that the model arch is subjected to a more substantial bending moment,belonging to structural weakness;the straight wall is subjected to a more remarkable axial force,bendi

关 键 词：纸拱模型 模型设计竞赛 地下空间结构 优化设计 承载自重比 

分 类 号：G421[文化科学—课程与教学论] TU317[文化科学—教育学]