International Journal of Space Structures最新文献

{"title":"Comparison of seismic responses of a reticulated dome under stochastic uniform and spatially correlated and coherent multiple-support excitation for a scenario seismic event","authors":"Y. Li, Tj Liu, F. Fan, H. Hong","doi":"10.1177/0956059920931012","DOIUrl":"https://doi.org/10.1177/0956059920931012","url":null,"abstract":"Structures with multiple supports can be sensitive to spatial coherence and spatial correlation. Since the historical recordings are insufficient for selecting records that match predefined inter-support distances of a structure, desired seismic magnitude (or intensity) and site to seismic source distance for structural analysis, such records need to be simulated. In this study, we use a procedure that is extended based on the stochastic point-source method to simulate records for scenario events. The application of the simulated records to a single-layer reticulated dome with multiple supports is presented. The application is aimed at investigating the differences between the responses subjected to spatially uniform excitation and to spatially correlated and coherent multiple-support excitation for a scenario seismic event, assessing the relative importance of the spatial coherence and spatial correlation on the responses, and evaluating the effect of the uncertainty in the spatially correlated and coherent records for a scenario event on the statistics of the seismic responses. The analysis results indicate that the spatial correlation of the Fourier amplitude spectrum has a predominant influence on the linear/nonlinear responses, and the consideration of spatially correlated and coherent excitation at multiple supports is very important. The consideration of uniform excitation severely underestimates the seismic load effects as compared to those obtained under spatially correlated and coherent multiple-support excitation.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"35 1","pages":"113 - 125"},"PeriodicalIF":0.0,"publicationDate":"2020-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0956059920931012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41978259","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}

{"title":"Effect of joint stiffness and size on stability of three-way single-layer cylindrical reticular shell","authors":"Hui-jun Li, Y. Taniguchi","doi":"10.1177/0956059920931019","DOIUrl":"https://doi.org/10.1177/0956059920931019","url":null,"abstract":"The main aim of the present article is to study the effect of joint stiffness and joint size on load-carrying capacity of single-layer cylindrical reticular shell. One normalized joint bending stiffness index κb and three proposed normalized indexes, that is, normalized joint axial stiffness κa, normalized joint shear stiffness κs, and normalized joint torsional stiffness κt, are used to evaluate the stiffness of joint. Through a large number of numerical computations, the main conclusions are summarized as follows: κb has a significant effect on limit load of reticular shell, and this effect has a close relationship to rise-to-span ratio of reticular shell. If κb is larger than 30, the joint can be treated as rigid joint. The relationship between the logarithm of κb and limit load of reticular shell can be expressed by the logistic formulation. Overall rigidity and load-carrying capacity of reticular shell are greatly influenced by joint axial stiffness. If κa is larger than 30, the effect of joint axial stiffness on load-carrying capacity of reticular shell is no longer obvious. Otherwise, the load-carrying capacity will be markedly reduced. The relation between the logarithm of κa and limit load of reticular shell can be fitted by the Dose–response formulation. The load-carrying capacity of reticular shell is also influenced by joint torsional stiffness and joint shear stiffness to some extent. The relation between the logarithm of κs and limit load can be fitted by the Asymptotic formulation. The effect of joint size on overall rigidity and limit load of reticular shell is evident and cannot be neglected. The limit load gradually decreases with the decrease in joint size, and there is an approximate linear relationship between limit load and joint size.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"35 1","pages":"107 - 90"},"PeriodicalIF":0.0,"publicationDate":"2020-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0956059920931019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46341221","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}

{"title":"Constructing hybrid gridshells using bending-active formwork","authors":"S. Schleicher, Michael Herrmann","doi":"10.1177/0956059920924189","DOIUrl":"https://doi.org/10.1177/0956059920924189","url":null,"abstract":"Aiming to promote a more sustainable approach to material utilization in architecture, this article presents an alternative construction method for lightweight and efficient concrete structures. The strategic focus is placed on building wide-spanning roof structures like vaults, domes, and freeform shells with the lowest possible input of raw materials and energy. To achieve this objective, the article explores the novel idea of using bending-active structures, made from millimeter-thin carbon fiber strips, as lost formwork and structural reinforcement for the production of hybrid gridshells. After a general introduction to the state-of-the-art in concrete construction, the authors discuss opportunities and challenges related to flexible formwork designs and their possible impacts on the building industry. Relying on the example of a built prototype, the authors present a promising design methodology and analyze the gridshell’s geometrical and structural characteristics throughout different stages of the construction process. The article concludes by discussing the added value of this research and identifying the key aspects that need to be considered in the further development of this construction method.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"35 1","pages":"80 - 89"},"PeriodicalIF":0.0,"publicationDate":"2020-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0956059920924189","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49063791","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}

{"title":"Stability of cable-supported spherical reticulated shell with tension members","authors":"Zhen Lu, Hui-jun Li, Chao Wang","doi":"10.1177/0956059920926356","DOIUrl":"https://doi.org/10.1177/0956059920926356","url":null,"abstract":"The suspendome has been widely employed in large-span space structures in recent years, and it has stronger structural stiffness and higher load-carrying capacity than single-layer spherical reticulated shell. In general, it is negligible for enhancement of load-carrying capacity to integrate cables and struts into the inner ring of reticulated shell. Based on the suspendome structure, a new hybrid space structure system, namely, cable-supported reticulated shell with tension member, is proposed in this study. To elucidate and verify its feasibility, the buckling mode and buckling form are obtained by the eigenvalue buckling analysis and nonlinear buckling analysis using ANSYS package, respectively. Furthermore, to determine the optimal structural form, this article investigates the effect of the main ribbed strut length, the initial geometric imperfection, asymmetric load, pretension in cables, and the material nonlinearity on its stability. The result shows that the proposed new structural system is of high load-carrying capacity. Tension member integrated to cable-supported reticulated shell can effectively improve the overall stiffness and greatly reduce the deformation of spherical reticulated shell. The plastic failure shape occurs with the similar pattern. The instable region mainly occurs on the main ribs with tension members, and each main rib only has one local failure dimple. The load-carrying capacity is remarkably affected by the asymmetric load, the initial geometric imperfection, and material nonlinearity. Based on the parametric analyses, Type C is the optimal choice, that is, appending cables and struts to the outermost ring of single-layer spherical reticulated shell, and arranging out-of-plane tension members under the four main ribs.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"35 1","pages":"69 - 79"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0956059920926356","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48965904","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}

{"title":"Dr Mamoru Kawaguchi: His grand thought, prominent works, and contribution to the advancement of spatial structures","authors":"S. Kato","doi":"10.1177/0956059920926361","DOIUrl":"https://doi.org/10.1177/0956059920926361","url":null,"abstract":"This article describes an engineer, his grand thought, prominent works, and contribution to the advancement of spatial structures based on geometry and mechanism. He is Dr Mamoru Kawaguchi, who lived in Japan for almost 90 years from 1932 to 2019. In his life, he designed a large number of epoch-making structures in the field of spatial structures in Japan and worldwide. These encompass structures of wood, concrete, steel, fabrics, and even air and water. His approach for structural design is very strict and broad with respect to geometry and mechanism and with respect to design concept, analysis, construction, fail-safe, and control as same as an academician of philosophy. The structures of Yoyogi Swimming Pool for the Tokyo Olympic Games 1964, the Grand Roof of the Osaka World Exhibition 1970, Fuji Group Pavilion, Pantadome, Suspendome, and a jumbo fabric carp flying across the sky are introduced in this article in order to remember him and to highlight his grand thought and eminent spatial structures.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"35 1","pages":"12 - 27"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0956059920926361","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48490979","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}

{"title":"Memories of Professor Mamoru Kawaguchi","authors":"J. Abel, R. Sundaram, O. P. Larsen, A. Behnejad","doi":"10.1177/0956059920909944","DOIUrl":"https://doi.org/10.1177/0956059920909944","url":null,"abstract":"My association with Mamoru Kawaguchi was almost exclusively through the International Association of Spatial Structures (IASS). When I was elected to the Executive Council in 1986, Mamoru was already the treasurer of the Association and soon became vice president and right-hand man to Professor Yoshikatsu Tsuboi (who became President of the IASS in 1986). Of course, I was exposed to Mamoru and his accomplishments through his oral presentations at IASS symposia and I enjoyed getting to know him more personally through the social events surrounding IASS events. Mamoru was always willing to step up to major responsibilities as an officer of the IASS, and when Professor Tsuboi died in 1990 in the midst of his second term as president, Professor Kawaguchi agreed to step in as president. After a period taken up with his responsibilities as a Dean at Hosei University (where he had served on the faculty since 1972), he was again elected president of the IASS from 2000 to 2006, making him the only member of the Association who served two distinct periods as president. Throughout the 1980s to the 2000s, he frequently served as a plenary speaker at IASS symposia and colloquia (as well as at other international conferences), representing the Association around the world. He also played a major role in the broadening of IASS activities in Asia in the 1980s, when there was an increasing number of members from Japan and other Asian countries and IASS conferences began to be held in the East. I was always particularly struck by the keynote plenary addresses that Mamoru presented at IASS symposia. His lectures demonstrated his creativity and innovation and were always based on careful analytical investigations and ingenuous model studies as well as on an acute evaluation of aesthetics. Yet there could be a playfulness in his design projects as best illustrated by his successful design and deployment of a giant flying carp to the delight of Japanese schoolchildren. He was a great mentor and teacher of students and younger colleagues. I was also delighted to host Mamoru at my university and home, sometimes with colleagues. He came several times to the difficult-to-reach area of upstate New York to observe and photograph spatial structures such as the Carrier Dome, an inflatable roof stadium in the nearby city of Syracuse which was designed by Walter Bird and fabricated and erected by his firm, Birdair. Mamoru visited our computer graphics lab to see our work on computer-aided design of spatial structures and was kind enough to give a lecture to our graduate students on his pantadome system. I also vividly remember the tour that he led for a few of us on the occasion of the 1997 Singapore symposium to personally show us the pantadome he had designed there, and a more recent similar tour in 2016 of the 1964 Olympic structures in Tokyo that he had designed with Professor Tsuboi. Finally, I will always remember the hospitality that he showed during the 2001 Nagoya symp","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"35 1","pages":"11 - 7"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0956059920909944","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42841448","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}

{"title":"Mamoru Kawaguchi: Master of motion and lightness of structures","authors":"C. Lázaro","doi":"10.1177/0956059920931316","DOIUrl":"https://doi.org/10.1177/0956059920931316","url":null,"abstract":"Mamoru Kawaguchi (1932–2019) was one of the great structural engineers of the late 20th century. He developed his career mostly in Japan and he has also superb works in China, Singapore and Spain. The spectrum of his structures is manifold: he designed shells, space frames, inflatable structures, tension structures, timber–steel hybrid systems and so on. With them, he conceived and provided the bones and muscles of sports halls, exhibition halls, museums, railway stations, towers, bridges and sculptures. Kawaguchi collaborated with some of the best architects of his time: Kenzo Tange, Arata Isozaki and Kazuyo Sejima just to cite some of the internationally most renowned. For his works, he was awarded many times in Japan, as well as internationally (the Architectural Institute of Japan award, the International Association for Shell and Spatial Structures Torroja Medal, the International Association for Bridge and Structural Engineering International Award and many others). In this article, I review Mamoru Kawaguchi’s main professional and academic achievements, and discuss his design philosophy, sources of inspiration and means to develop his ideas from my own personal experience.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"35 1","pages":"35 - 42"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0956059920931316","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43001456","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}

{"title":"A great engineer and inspiring teacher","authors":"T. T. Lan","doi":"10.1177/0956059920931300","DOIUrl":"https://doi.org/10.1177/0956059920931300","url":null,"abstract":"This article is presented in remembrance of Professor Mamoru Kawaguchi. He has won a great deal of recognition in China and could be cited as a great engineer. Three projects that have been realized successfully in Tianjin—that is, Yingbin Tower, Tianjin Museum, and Yongle Bridge—are presented. As an inspiring teacher, his remarkable personal quality can be found in three events held in China. The article concludes with his activities in conducting a technical tour of 2016 International Association for Shells and Spatial Structures Symposium and interview of a TV film in 2018.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"35 1","pages":"28 - 34"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0956059920931300","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46556852","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}

{"title":"Obituary: Mamoru Kawaguchi (1932–2019)","authors":"J. Chilton","doi":"10.1177/0956059920909924","DOIUrl":"https://doi.org/10.1177/0956059920909924","url":null,"abstract":"Structural engineer for the Yoyogi Stadium, Tokyo Olympics Games 1964 and Emeritus Professor of Hosei University, Tokyo. Born Fukui City, Japan, 21 October 1932 and died Tokyo, 29 May 2019. Structural engineers, whose contribution is often indispensable to the realization of iconic buildings, are seldom honoured to the same degree as the architects with whom they collaborate. Mamoru Kawaguchi, Japanese structural engineer and Emeritus Professor at Hosei University, Tokyo, was one such.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"35 1","pages":"3 - 6"},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0956059920909924","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41960135","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}

{"title":"Analytical equations for the connectivity matrices and node positions of minimal and extended tensegrity plates","authors":"Shuhui Jiang, R. Skelton, E. P. Peraza Hernandez","doi":"10.1177/0956059920902375","DOIUrl":"https://doi.org/10.1177/0956059920902375","url":null,"abstract":"Tensegrity structures are three-dimensional networks of truss members loaded in tension or compression. The location of the end points of the truss members, denoted as the nodes, and the associated node-member connectivity matrices are the fundamental descriptors in the modeling and design of tensegrity structures. This paper presents systematic analytical formulas for such node locations and connectivity matrices for tensegrity plates of two different topologies. The formulas apply to plates of any thickness, diameter, and complexity. As application examples, dynamic simulations demonstrating a strategy for morphing the planar plates toward domes are studied. The presented formulas allow for efficient computations and can be employed in the numerical analysis and design of shape-controllable antennas and mirrors, architectural constructions, and other applications based on tensegrity plate and dome-like structures.","PeriodicalId":34964,"journal":{"name":"International Journal of Space Structures","volume":"35 1","pages":"47 - 68"},"PeriodicalIF":0.0,"publicationDate":"2020-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1177/0956059920902375","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44652956","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}