Journal of the International Association for Shell and Spatial Structures最新文献_第2页

Scaled Shaking Table Tests Simulating the Damage of the School Gymnasium in the 2016 Kumamoto Earthquake 模拟2016年熊本地震中学校体育馆破坏的比例振动台试验

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Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-06-01 DOI: 10.20898/j.iass.2023.006

J. Fujiwara, Yuki Terazawa, A. Kishida, K. Nishimura, T. Yamashita, Tomohiko Kumagai, T. Takeuchi

引用次数: 0

Vibration Control of Metal Spatial Structures With Tuned Mass Dampers 基于调谐质量阻尼器的金属空间结构振动控制

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Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-06-01 DOI: 10.20898/j.iass.2023.010

S. Yoshinaka, K. Kawaguchi, J. Fujiwara, A. Kishida, M. Yamakawa

引用次数: 0

Design of a Full-Scale Aluminum Plate Tensegrity Structure 全尺寸铝板张拉整体结构设计

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Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-01-01 DOI: 10.20898/j.iass.2023.003

Heather Gathman, Ann C. Sychterz

{"title":"Design of a Full-Scale Aluminum Plate Tensegrity Structure","authors":"Heather Gathman, Ann C. Sychterz","doi":"10.20898/j.iass.2023.003","DOIUrl":"https://doi.org/10.20898/j.iass.2023.003","url":null,"abstract":"Tensegrity structures are typically composed of bars and cables held together in a state of self-stress. This introduces a challenge regarding the practical use of tensegrity structures, as many structures in civil engineering, such as bridge decks and roof coverings, require a surface element to be integrated into the structure. This paper describes the design development and analysis of a full-scale aluminum plate tensegrity canopy structure, which introduces a plate as a third element type. The primary reason for the plate tensegrity structure as a canopy is its high strength-to-weight ratio while providing a surface. This paper proposes an analysis method for plate tensegrity structures using dynamic relaxation, a static solution of form finding. To employ dynamic relaxation, each plate is transformed into an equivalent framework of 5 nodes and 8 bars, which significantly increases the computational efficiency of the analysis method. In addition to static analysis, a dynamic characterization is performed to ensure resistance to vibrations induced by wind and seismic activity. Results indicate that the aluminum plate tensegrity structure meets current civil engineering criteria for strength and serviceability and that the eigenfrequencies are sufficiently high to be beyond the risk of resonance for wind and seismic activity.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67610227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study The Influence of Grid-Jumping Layout on Spatial Calbe-Truss Structure Wihtout Inner Ring Cables with Rupture of Local Cables (Struts) 跳网布置对局部索(杆)断裂无内环索空间索桁架结构的影响研究

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Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-01-01 DOI: 10.20898/j.iass.2022.021

Jian Lu, S. Xue, X. Li

{"title":"Study The Influence of Grid-Jumping Layout on Spatial Calbe-Truss Structure Wihtout Inner Ring Cables with Rupture of Local Cables (Struts)","authors":"Jian Lu, S. Xue, X. Li","doi":"10.20898/j.iass.2022.021","DOIUrl":"https://doi.org/10.20898/j.iass.2022.021","url":null,"abstract":"Spatial cable-truss structure without inner ring cables (SCSWIRC) is a new type of cable-truss tension structures (CTTS), and its anti-collapse ability is strong, but its construction forming is difficult. The main reason is that there are a lot of struts (or compression struts) when the span of SCSWIRC is larger and struts are easy to cause winding and collision during its construction. In order to solve the difficulty of construction forming, the grid-jumping layout was proposed to simplify SCSWIRC to delete the redundant struts. It is necessary to further study whether the anti-collapse ability of the remaining structure after the grid-jumping layout is affected by grid-jumping layout. Based on transient dynamic theory, the rupture of local cables (struts) of SCSWIRC with grid-jumping layout is studied. The research results show that self-weight has a little influence on the SCSWIRC; the initial prestress only increases the internal forces of components and the same proportion of feasible prestress levels do not amplify the response of SCSWIRC with rupture of local cables (struts); the anti-collapse ability of the remaining structure after the grid-jumping layout of SCSWIRC is still strong and the ability to resist the external loads is good at the same time. The rupture of local cables (struts) for the original scheme and grid-jumping layout schemes do not cause the progressive collapse. The research contents offer useful reference for the safety design of SCSWIRC.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":"30 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67609974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Meshless Non-Parametric Shape Design of Piecewise Approximately Developable Surfaces Using Discretized Local Gauss Map 基于离散局部高斯映射的分段近似可展曲面无网格非参数形状设计

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Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-01-01 DOI: 10.20898/j.iass.2022.023

K. Hayakawa, M. Ohsaki, Jingyao Zhang

引用次数: 0

The Impact of Contemporary Technology on Shell Structures: Material and Light Solutions 当代技术对壳结构的影响:材料和光解决方案

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Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-01-01 DOI: 10.20898/j.iass.2022.022

Jan Cudzik, Aygün Atasoy

引用次数: 0

A Numerical Analysis Model of Composite Pneumatic Formwork Considering The Stiffness Contribution of Polyurethane Layer 考虑聚氨酯层刚度贡献的复合气动模板数值分析模型

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Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-01-01 DOI: 10.20898/j.iass.2023.002

Gaoxiang Xu, Qiang Qing, Jinghai Gong

{"title":"A Numerical Analysis Model of Composite Pneumatic Formwork Considering The Stiffness Contribution of Polyurethane Layer","authors":"Gaoxiang Xu, Qiang Qing, Jinghai Gong","doi":"10.20898/j.iass.2023.002","DOIUrl":"https://doi.org/10.20898/j.iass.2023.002","url":null,"abstract":"Pneumatic formwork is a kind of inflated fabric-polyurethane composite formwork formed by spraying polyurethane on the interior surface of the membrane. A numerical analysis model of composite pneumatic formwork considering the stiffness contribution of polyurethane is proposed to predict the structural response. The analysis model simulates the component of fabric and polyurethane with membrane elements and shell elements respectively, and Tie constraint of surface to surface is defined at the interface. A nonlinear material model for fabric is adopted considering the influence of stress ratio and loading history, and the constitutive relation of polyurethane is described in the foaming plane with different properties for tension and compression. Newton-Raphson incremental iterative method is used to solve the involved nonlinear problems. The simulation accuracy of the proposed analysis model is verified by comparing its predictions with test results about the load-deformation response of an inflated membrane structure and the corresponding composite pneumatic formwork under horizontal loading. The numerical model is further used to investigate the influence of the thickness of polyurethane layer on the improvement of overall structural stiffness of a larger pneumatic formwork under horizontal fresh gale, and the polyurethane is proved to be beneficial for the shape-control of pneumatic formwork.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67610155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Form-Finding for Free-Form Reticulated Shell Structure Considering Structural Performance and Regularization of Node Connection Patterns 考虑结构性能和节点连接模式正则化的自由形式网壳结构寻形

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-01-01 DOI: 10.20898/j.iass.2023.001

Toshiaki Kimura, Hiroki Takeuchi

引用次数: 0

Classification and Mechanical Behaviors of Inner Concave Cable-Arch Structure with V-Shape Web Struts v形腹板内凹索拱结构的分类及受力性能

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-01-01 DOI: 10.20898/j.iass.2023.005

Dabin Yang, Yi Sun, Renjie Liu, Leilei Guo

{"title":"Classification and Mechanical Behaviors of Inner Concave Cable-Arch Structure with V-Shape Web Struts","authors":"Dabin Yang, Yi Sun, Renjie Liu, Leilei Guo","doi":"10.20898/j.iass.2023.005","DOIUrl":"https://doi.org/10.20898/j.iass.2023.005","url":null,"abstract":"The inner concave cable-arch structures with V-shape web struts were classified, and single-tensioning construction method and multiple-tensioning construction method for continuous cable-arch structures were described. The optimization of pretension for multiple-tensioning construction method was carried out. FE models of cable-arch structures including the single-tensioning models and the multiple-tensioning models were created. The mechanical behaviors including stress ratios, stiffness, horizontal bearing reaction force and structural stability of the two kinds of models were compared. The results show that the pretension does not significantly influence the maximum resultant displacement, horizontal bearing reaction force, and stability of the single-tensioning cable-arch structures. With pretension increasing the stress ratios can be reduced. The stress ratios and stiffness decrease with the increasing of the rise-to-span ratio, and horizontal bearing reaction force slightly decreases, but structural stability has no obvious changing rules. There is no difference in mechanical behaviors between two types of cable-arch structures with the rise-to-span ratio of 0.2, it is recommended to use the single-tensioning construction method. However, the mechanical behaviors of multiple-tensioning type are generally better than that of single-tensioning type with the rise-to-span ratio of 0.3 and 0.4. It is necessary to consider the cost of construction and mechanical behaviors to determine its tensioning construction method.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":"1 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67610380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hexbox Canopy: A Segmented Timber Plate Shell with Hardwood Wedge Joints Hexbox雨棚：带硬木楔形接头的分段木板壳

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2022-12-01 DOI: 10.20898/j.iass.2022.019

C. Robeller, Eduardo De Oliveira Barata, Enrico Valentino Tagliaboschi, Felix Schmidt-Kleespies

{"title":"Hexbox Canopy: A Segmented Timber Plate Shell with Hardwood Wedge Joints","authors":"C. Robeller, Eduardo De Oliveira Barata, Enrico Valentino Tagliaboschi, Felix Schmidt-Kleespies","doi":"10.20898/j.iass.2022.019","DOIUrl":"https://doi.org/10.20898/j.iass.2022.019","url":null,"abstract":"The HexBox Canopy demonstrates a new \"plug & play\" system for the rapid on-site assembly and disassembly without formwork of a segmented timber shell, consisting of relatively inexpensive, prefabricated hexagon-shaped boxes made from plywood plates. With 1531 timber segments making\u0000 up 201 boxes, the HexBox shell is made exclusively of plywood components without the addition of any kind of metal fasteners for the main load-bearing structure. The major novelty is the wood-only connections between the box components, which are produced from cut-off waste material resulting\u0000 from the cutting of the main plates of the structure. These connectors are inspired by traditional wedge joints, which were a smart and common method in handcrafted carpentry and cabinetmaking. Rather than attempting ultra-precisely fabricated elements, the wedges allow assembling box-like\u0000 segments even when there are small imprecisions. Additionally, these joints allow for pulling and forcing the boxes together, closing gaps between the elements which may occur during assembly. Another key aspect is the introduction of an innovative technique that allows for the simple and\u0000 safe 1K PUR adhesive joining of thousands of miter joints with individual dihedral angles. Conventional clamping tools are indeed designed for orthogonal miter joints and could therefore not be used here.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46056470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2