Journal of the International Association for Shell and Spatial Structures最新文献

An Initial-Morphogenesis Technique of Free-Form Shell Roofing Based on a Fourier Transform 基于傅里叶变换的自由形式壳屋顶初始形态发生技术

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-09-01 DOI: 10.20898/j.iass.2023.015

Kiichiro Sawada

引用次数: 0

Membrane Solution for a Paraboloid under Self-Weight 自重抛物面的膜溶液

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-09-01 DOI: 10.20898/j.iass.2023.017

Mitchell Gohnert, Ryan Bradley

{"title":"Membrane Solution for a Paraboloid under Self-Weight","authors":"Mitchell Gohnert, Ryan Bradley","doi":"10.20898/j.iass.2023.017","DOIUrl":"https://doi.org/10.20898/j.iass.2023.017","url":null,"abstract":"Stress flows in a predictable pattern, and structural optimization is achieved by matching the natural flow of stress with the structural shape. The geometry of the parabolic shape simulates the natural flow of stress, and is therefore highly efficient in the conveyance of stress. However, despite its importance, the membrane solution of a parabolic dome has never been solved. Designers have been reliant on numerical methods, such as finite elements, or older techniques such as graphical solutions. For this reason, a closed-form membrane solution for a parabolic dome is derived. The solution solves for the meridian and hoop stresses, in the vertical and horizontal directions of the dome for the case of uniformly distributed loads, such as the self-weight of a uniformly thick shell. Finite element analysis (FEA) was also used to undertake a full shell analysis (i.e., membrane and bending behavior) to examine the edge effects that are not captured in the membrane solution. From this study, the benefits of the parabolic dome were found to be similar to the catenary dome; i.e., the stresses in the meridian and hoop directions are compressive, boundary effects are largely minimal, andstresses flow primarily in-plane (membrane action).","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135690317","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

Progressive Collapse Analysis of Single-Layer Latticed Domes With Fabricated Joints 带装配式节点的单层网架穹顶的连续倒塌分析

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-06-01 DOI: 10.20898/j.iass.2023.014

Ying Xu, Xiaoning Zhang, Q. Han, W. Huang, Yiming Liu

{"title":"Progressive Collapse Analysis of Single-Layer Latticed Domes With Fabricated Joints","authors":"Ying Xu, Xiaoning Zhang, Q. Han, W. Huang, Yiming Liu","doi":"10.20898/j.iass.2023.014","DOIUrl":"https://doi.org/10.20898/j.iass.2023.014","url":null,"abstract":"Progressive collapse accidents of single-layer latticed domes seriously threaten public safety. The progressive collapse-resisting capacity (PCRC) is gradually becoming an essential requirement in the design of spatial structures. Currently, the joint system used in spatial structures\u0000 can be divided into two categories: welded joints and fabricated joints. The semi-rigidity of fabricated joints may have a significant influence on the PCRC of single- layer latticed domes. In this study, the PCRCs of single-layer fabricated latticed domes with identical span and rise-to-span\u0000 ratio are evaluated based on the critical progressive collapse load (CPCL). The collapse mechanism of single-layer latticed domes with different grid forms is revealed by progressive analysis. In addition, the effects of joint rigidity, grid form and type of initial failure are further evaluated.\u0000 The results indicate that the collapse mechanism of single-layer latticed domes includes the radial propagation type and the circumferential propagation type. The latticed domes with quadrilateral grids have much lower PCRC than those with triangular grids. The CPCLs of weld-jointed latticed\u0000 domes are 5% to 22% higher than those of the fabricated latticed domes with the same grid form. The above influence should be fully considered in the progressive collapse-resisting design of latticed domes with fabricated joints.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43415748","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

Case Study of Structural Design and Construction Process Analysis for an Aluminum Alloy Free Form Reticulated Shell of Nanjing Niushou Mountain 南京牛寿山铝合金自由形式网壳结构设计与施工工艺分析实例

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-06-01 DOI: 10.20898/j.iass.2023.011

Yunan Cai, Shaole Yu, Lianping Yang, Meng Wang, Y. Ouyang, Jian Yin, Hui Lin, Xiaoyang Sun, H. Chen

{"title":"Case Study of Structural Design and Construction Process Analysis for an Aluminum Alloy Free Form Reticulated Shell of Nanjing Niushou Mountain","authors":"Yunan Cai, Shaole Yu, Lianping Yang, Meng Wang, Y. Ouyang, Jian Yin, Hui Lin, Xiaoyang Sun, H. Chen","doi":"10.20898/j.iass.2023.011","DOIUrl":"https://doi.org/10.20898/j.iass.2023.011","url":null,"abstract":"The aluminum alloy reticulated shell structure of Nanjing Niushou Mountain, the largest single-layer aluminum alloy reticulated shell in Asia, is 227m long from south to north, 130m spanning from east to west. In the design process, the aluminum alloy reticulated shells has been established,\u0000 then the whole stability of the structure was analyzed to get the first six buckling modes and the safety factors through elastic and elastic-plastic analyses of the whole process. According to the complex construction conditions and the difficulties of construction for a super-large free\u0000 form reticulated shell, a block fabrication accompanied by step-by-step launching erection process was introduced for economical and in-site safe construction. From construction economy, four different sliding systems have been prepared and compared to enhance the construction efficiency.\u0000 Also four stages in each sliding system were assumed as their key construction steps through trial calculation and conceptual judgment. Thus, the construction process analysis model in each stage was analyzed and simulated respectively according to the key construction steps. The analysis\u0000 results show that the safety factor of the reticulated shell structure meets the requirements of the specification, and that the selected sliding construction scheme satisfies the construction requirement on the special construction condition. This report provides an effective reference on\u0000 future practical application.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46546857","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

The Gridshells for the San Francisco Salesforce Transit Center 旧金山Salesforce运输中心的网格壳

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-06-01 DOI: 10.20898/j.iass.2023.012

C. Stutzki, J. Knowles

引用次数: 0

Seismic Design of Sports Arena for Tokyo Olympic 2020 Using Energy-Dissipation Devices 利用消能装置进行2020年东京奥运会体育馆抗震设计

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-06-01 DOI: 10.20898/j.iass.2023.013

Yoshikazu Sugiura, D. Nishikawa, Yasuyoshi Hitomi

引用次数: 0

Stability Analysis of Free-Form Reticulated Shells With Semi-Rigid Joints 具有半刚性节点的自由形式网壳稳定性分析

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-06-01 DOI: 10.20898/j.iass.2023.016

Bingbing San, Wenhui Zhao, Ye Qiu, Shiwen Han

引用次数: 0

Research on the Method of Simplifying Concrete Substructures of Suspen-Dome Prototype Structure in Shaking Table Test Scale Model 振动台试验规模模型中悬挑穹顶原型结构混凝土下部结构简化方法研究

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-06-01 DOI: 10.20898/j.iass.2023.009

Zetao Zhao, Suduo Xue, X. Li

{"title":"Research on the Method of Simplifying Concrete Substructures of Suspen-Dome Prototype Structure in Shaking Table Test Scale Model","authors":"Zetao Zhao, Suduo Xue, X. Li","doi":"10.20898/j.iass.2023.009","DOIUrl":"https://doi.org/10.20898/j.iass.2023.009","url":null,"abstract":"This paper proposed and studied the method of simplifying concrete substructures of the suspen-dome prototype structure in shaking table test scale model. Firstly, a method that replaces complex concrete substructures of the suspen-dome prototype structure with steel substructures in\u0000 shaking table test scale model was proposed. And then, a dynamic integral scale model considering substructures was established. After that, the natural frequencies of the model were obtained by conducting white noise sweep test. Finally, the numerical scaled model was established by ABAQUS\u0000 software, and the numerical model of the prototype structure was established by Midas/Gen software. The natural frequency, mode shape, and seismic response of the scale model were compared with the prototype structure. It is observed that the natural frequencies of the test scale model were\u0000 very close to that of the prototype structure after considering the scale ratio, and the scaled model's first five modes were basically consistent with that of the prototype structure. Besides, the difference in acceleration response between the two modes is also small. It is proved that in\u0000 shaking table test, the method of designing the integral scale model of replacing complex concrete substructures of the prototype structure with steel substructures is accurate and effective. The analysis results provides a reference for researchers and designers to more conveniently establish\u0000 scaled models of suspen-dome structures in shaking table tests.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47413554","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

Case Study: Roof Truss Structure With Large Cut Out and Elliptic Glazing Surface 案例研究:大切口及椭圆玻璃表面屋架结构

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-06-01 DOI: 10.20898/j.iass.2023.007

Z. Nagy, Z. Kiss, A. Kelemen, K. Bálint, Annabella Sánduly

{"title":"Case Study: Roof Truss Structure With Large Cut Out and Elliptic Glazing Surface","authors":"Z. Nagy, Z. Kiss, A. Kelemen, K. Bálint, Annabella Sánduly","doi":"10.20898/j.iass.2023.007","DOIUrl":"https://doi.org/10.20898/j.iass.2023.007","url":null,"abstract":"The article presents the technical solutions implemented during the design of the roof trusses and the elliptic skylight structure (Figure. 1) for the extension of the \"Shopping City Sibiu\" commercial centre in Romania. The area of the roof structure was approximately 1600 sqm (29x56\u0000 m). In the central region of the roof, a 27 m long and 10 m wide elliptic skylight was placed. The challenges of the project arouse from the relatively large span of the structure, being supported only on 13 non-symmetrically placed perimeter concrete columns. Thus, the structure had to be\u0000 designed in such a way, that it would support the extra 20 tones coming from the skylight structure, while also bring inside the natural light unobstructed by any main structural elements. The relatively large deformations between the supporting points of the skylight under variable loads\u0000 (especially snow loads) can also have adverse effects on the glazing surface during operational phase. Due to this, also the serviceability limit state checks had an important role in the engineering calculations. The structural configuration steps with performed analyses on the partial structural\u0000 models and on the complex 3D model were especially useful for the identification of the sensitive zones, helping to create the surface shape and develop adequate structural details. The paper summarizes the structural engineering challenges during the design and execution process.","PeriodicalId":42855,"journal":{"name":"Journal of the International Association for Shell and Spatial Structures","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44424077","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

Geometry and Stability: Design and Construction of a 115m Span Freeform Roof in Kuala Lumpur 几何与稳定性:吉隆坡115米跨度自由形式屋顶的设计与建造

IF 0.8

Journal of the International Association for Shell and Spatial Structures Pub Date : 2023-06-01 DOI: 10.20898/j.iass.2023.008

Catherine Poirriez, Y. Bouzida

引用次数: 0