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IMPROVEMENT EFFECT ON CONNECTIVITY OF LOCAL AREA NETWORK THROUGH ELECTROMAGNETIC SHIELDING BY CONDUCTING WIRE FORMING AN INVERTED-L ANTENNA 通过导线形成倒角天线的电磁屏蔽改善局域网连通性的效果
Journal of Structural and Construction Engineering Pub Date : 2023-10-01 DOI: 10.3130/aijs.88.1399
Yosuke ITO, Masatomo TAMEZAWA, Atsushi HORINOUCHI
{"title":"IMPROVEMENT EFFECT ON CONNECTIVITY OF LOCAL AREA NETWORK THROUGH ELECTROMAGNETIC SHIELDING BY CONDUCTING WIRE FORMING AN INVERTED-L ANTENNA","authors":"Yosuke ITO, Masatomo TAMEZAWA, Atsushi HORINOUCHI","doi":"10.3130/aijs.88.1399","DOIUrl":"https://doi.org/10.3130/aijs.88.1399","url":null,"abstract":"Building materials with metal may serve as electromagnetic shields and deteriorate the transmissions of wireless LAN in residences. To improve the transmissions at a low cost, a conducting wire processed as an inverted-L antenna is attached to a very small hole in the electromagnetic shield. The optimal shape of the conducting wire was found to be 10 mm vertically from the mounting surface and 25 mm at right angles from its tip, as well as its characteristics as an antenna. In addition, the guideline for the installation location based on this experimental result can be considered.","PeriodicalId":38967,"journal":{"name":"Journal of Structural and Construction Engineering","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135372470","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
下弦材に座屈拘束部材を挿入した損傷制御型トラス梁に関する研究： 关于在下弦材料中插入座屈约束构件的损伤控制型桁架梁的研究:
Journal of Structural and Construction Engineering Pub Date : 2023-10-01 DOI: 10.3130/aijs.88.1463
Shotaro NAKADA, Shoichi KISHIKI, Yuki ISHIKAWA, Nobuhiko TATSUMI, Hiroshi EGASHIRA, Manabu KAWASHIMA
{"title":"下弦材に座屈拘束部材を挿入した損傷制御型トラス梁に関する研究：","authors":"Shotaro NAKADA, Shoichi KISHIKI, Yuki ISHIKAWA, Nobuhiko TATSUMI, Hiroshi EGASHIRA, Manabu KAWASHIMA","doi":"10.3130/aijs.88.1463","DOIUrl":"https://doi.org/10.3130/aijs.88.1463","url":null,"abstract":"This paper discusses damage controlled truss beam using buckling restrained members as a force limited member. In this paper, cyclic loading tests focusing on truss beam with or without buckling restrained member and detail of joint above the buckling restrained member was conducted in order to confirm structural behavior of the truss. The findings obtained from the tests are summarized as follows: (1) the deformation capacity of truss with the buckling restrained member is superior to that without the member; (2) In the truss with buckling restrained member, bending deformation was caused on the joint above the buckling restrained member.","PeriodicalId":38967,"journal":{"name":"Journal of Structural and Construction Engineering","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135372654","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
ESTIMATION OF RUPTURE DIRECTION AND FREQUENCY-DEPENDENT RUPTURE DIRECTIVITY EFFECT OF NORTHWESTERN CHIBA PREFECTURE EARTHQUAKES 千叶县西北部地震破裂方向及频率相关破裂方向性效应的估计
Journal of Structural and Construction Engineering Pub Date : 2023-10-01 DOI: 10.3130/aijs.88.1417
Toshimi SATOH
{"title":"ESTIMATION OF RUPTURE DIRECTION AND FREQUENCY-DEPENDENT RUPTURE DIRECTIVITY EFFECT OF NORTHWESTERN CHIBA PREFECTURE EARTHQUAKES","authors":"Toshimi SATOH","doi":"10.3130/aijs.88.1417","DOIUrl":"https://doi.org/10.3130/aijs.88.1417","url":null,"abstract":"Rupture directions of 17 northwestern Chiba prefecture earthquakes with Mw3.8-5.9 are estimated assuming the unilateral rupture using azimuth-dependency of apparent source spectral ratios. Rupture directions of at least near 1/3 of earthquakes have frequency-dependency. This result can be interpreted that different-sized strong motion generation areas are located at the different directions from the hypocenter. The largest two repeating earthquakes with Mw5.9 are estimated to have the same stress drop, but they ruptured to different direction each other and the directions have frequency-dependency. Ground motions within 100 km of most of earthquakes have rupture directivity effects up to 10Hz.","PeriodicalId":38967,"journal":{"name":"Journal of Structural and Construction Engineering","volume":"169 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135372650","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
積層ゴム支承の終局特性に関する実験及び解析的研究（その２）：フレア状構造積層ゴムの提案と高減衰ゴム系積層ゴム支承にフレア状構造を適用した場合の終局特性に関する理論及び解析的研究 关于层叠橡胶支承终局特性的实验和分析研究(二):火炬状结构层叠橡胶的提案和高衰减橡胶系层叠橡胶支承中应用火炬状结构时的终局特性的理论和分析研究
Journal of Structural and Construction Engineering Pub Date : 2023-10-01 DOI: 10.3130/aijs.88.1429
Takahiro MORI, Hideaki KATO, Yuma TANI, Masahiro NAKAMURA, Nobuo MUROTA, Sadamitsu TAKEUCHI
{"title":"積層ゴム支承の終局特性に関する実験及び解析的研究（その２）：フレア状構造積層ゴムの提案と高減衰ゴム系積層ゴム支承にフレア状構造を適用した場合の終局特性に関する理論及び解析的研究","authors":"Takahiro MORI, Hideaki KATO, Yuma TANI, Masahiro NAKAMURA, Nobuo MUROTA, Sadamitsu TAKEUCHI","doi":"10.3130/aijs.88.1429","DOIUrl":"https://doi.org/10.3130/aijs.88.1429","url":null,"abstract":"As second shape factor of rubber bearings is small, buckling strain is decrease. In this study, new flare-like structure in order to improve buckling property is proposed. In the conventional structure of rubber bearings, outer diameter of inner rubber is uniform for all layers. In the proposed flare-like structure, outer diameter is not uniform and the diameter of upper and lower layer is larger than that of center layer. First, outline of flare-like structure is introduced. Second, improvement of ultimate properties by flare-like structure is proved theoretically. Third, buckling properties improvement is proved based on finite element analysis.","PeriodicalId":38967,"journal":{"name":"Journal of Structural and Construction Engineering","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135372488","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
DISCUSSION ON RESEARCH ACTIVITY PUBLISHED AS “DEFORMATION CAPACITY OF EXTERIOR WALL USING METAL PANEL” 关于“金属板外墙变形能力”研究活动的讨论
Journal of Structural and Construction Engineering Pub Date : 2023-10-01 DOI: 10.3130/aijs.88.1487
Hitoshi KUWAMURA
{"title":"DISCUSSION ON RESEARCH ACTIVITY PUBLISHED AS “DEFORMATION CAPACITY OF EXTERIOR WALL USING METAL PANEL”","authors":"Hitoshi KUWAMURA","doi":"10.3130/aijs.88.1487","DOIUrl":"https://doi.org/10.3130/aijs.88.1487","url":null,"abstract":"Inter-story drifts of building frames during earthquake motions bring about compulsory deformation and possibly damage to the nonstructural exterior walls. The components such as metal skins, bolted or screwed joints and furring strips constituting the metal wall panels under such earthquake effects are treated to be series-connected in the relevant original paper, but it is pointed out in this discussion that they should be regarded parallel-connected.","PeriodicalId":38967,"journal":{"name":"Journal of Structural and Construction Engineering","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135372320","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 AUTHOR’S ANSWER TO DISCUSSION BY HITOSHI KUWAMURA 作者对kuwamura仁讨论的回答
Journal of Structural and Construction Engineering Pub Date : 2023-10-01 DOI: 10.3130/aijs.88.1489
Miku KUROSAWA, Shoichi KISHIKI
{"title":"THE AUTHOR’S ANSWER TO DISCUSSION BY HITOSHI KUWAMURA","authors":"Miku KUROSAWA, Shoichi KISHIKI","doi":"10.3130/aijs.88.1489","DOIUrl":"https://doi.org/10.3130/aijs.88.1489","url":null,"abstract":"The Authors are grateful for the suggestion that Prof. Hitoshi Kuwamura has graciously shared regarding the paper. In conducting research on the seismic performance of non-structural exterior walls, it is important to clarify the structural behavior of exterior walls in complicated compositions in order to ensure the safety against fall out. This paper describes the author’s response.","PeriodicalId":38967,"journal":{"name":"Journal of Structural and Construction Engineering","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135372501","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
変分オートエンコーダによるベイズ更新を用いた非線形地震応答解析モデルの更新手法の提案 使用变分自编码器贝叶斯更新的非线性地震响应分析模型更新方法的提出
Journal of Structural and Construction Engineering Pub Date : 2023-10-01 DOI: 10.3130/aijs.88.1406
Sangwon LEE, Yuma MATSUMOTO, Taro YAOYAMA, Takenori HIDA, Tatsuya ITOI
{"title":"変分オートエンコーダによるベイズ更新を用いた非線形地震応答解析モデルの更新手法の提案","authors":"Sangwon LEE, Yuma MATSUMOTO, Taro YAOYAMA, Takenori HIDA, Tatsuya ITOI","doi":"10.3130/aijs.88.1406","DOIUrl":"https://doi.org/10.3130/aijs.88.1406","url":null,"abstract":"This paper proposes a nonparametric Bayesian updating method for nonlinear seismic response analysis models considering uncertainties using Variational Auto-Encoder (VAE). The proposed method is used for calculating the likelihood of the parameters for the response analysis model using VAE without any assumptions about the probability distribution. The proposed method is confirmed to successfully update the probability distribution of the parameters of a bilinear single-degree-of-freedom system. To discuss the characteristics of the proposed method, the relationship between the uncertainty due to the lack of information on the nonlinear response and the width of the posterior distribution of the parameters is investigated.","PeriodicalId":38967,"journal":{"name":"Journal of Structural and Construction Engineering","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135372327","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
A NEW BAR-BASED ELEMENT FOR BUCKLING ANALYSIS OF T-SECTIONS AND SIMILAR SECTIONS, AND APPLICATION TO SPATIAL STRUCTURES 一种新的基于杆的t型及类似截面屈曲分析单元，并在空间结构中的应用
Journal of Structural and Construction Engineering Pub Date : 2023-10-01 DOI: 10.3130/aijs.88.1441
Shiro KATO, Shoji NAKAZAWA, Someta SOR, Yuji TAKIUCHI
{"title":"A NEW BAR-BASED ELEMENT FOR BUCKLING ANALYSIS OF T-SECTIONS AND SIMILAR SECTIONS, AND APPLICATION TO SPATIAL STRUCTURES","authors":"Shiro KATO, Shoji NAKAZAWA, Someta SOR, Yuji TAKIUCHI","doi":"10.3130/aijs.88.1441","DOIUrl":"https://doi.org/10.3130/aijs.88.1441","url":null,"abstract":"The present study presents a new FEM element for buckling analysis of T-section members as well as H-section and its application to spatial structures. The element is fundamentally composed of parallel three beams together with two struts normal to the three elements, enabling a consideration of lateral-torsional buckling. The present study first investigates the capability to analyze buckling strength of T-sections, extended to H-sections with different sizes for top and bottom flanges, then, followed by buckling analysis to a shallow arch. Through the analyses, the effectiveness of the proposed element for buckling analysis of spatial structures is confirmed.","PeriodicalId":38967,"journal":{"name":"Journal of Structural and Construction Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135372668","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
EXPERIMENTAL VERIFICATION ON DESIGN METHOD TO PREVENT OUT-OF-PLANE BUCKLING OF BUCKLING-RESTRAINED BRACE UNDER BIDIRECTIONALLY LARGE DEFORMATION 双向大变形下防屈曲约束支撑面外屈曲设计方法的试验验证
Journal of Structural and Construction Engineering Pub Date : 2023-10-01 DOI: 10.3130/aijs.88.1475
Yuki TAMURA, Yuji KOETAKA, Ryota TOBARI, Tomohiro KINOSHITA
{"title":"EXPERIMENTAL VERIFICATION ON DESIGN METHOD TO PREVENT OUT-OF-PLANE BUCKLING OF BUCKLING-RESTRAINED BRACE UNDER BIDIRECTIONALLY LARGE DEFORMATION","authors":"Yuki TAMURA, Yuji KOETAKA, Ryota TOBARI, Tomohiro KINOSHITA","doi":"10.3130/aijs.88.1475","DOIUrl":"https://doi.org/10.3130/aijs.88.1475","url":null,"abstract":"It is pointed out that out-of-plane buckling of buckling-restrained braces whose connections have low stiffness or strength may occur. However, the design criteria to prevent out-of-plane buckling proposed in past is based on the experiment with small out-of-plane story drift. In this paper, cyclic loading test of buckling-restrained brace under largely bidirectional story drift is conducted. Through the test, effects of stiffness and strength of the connections, and loading direction on the ultimate failure of the braces are clarified. Further, design criterion to prevent yielding splice plates is proposed and validated based on the test results.","PeriodicalId":38967,"journal":{"name":"Journal of Structural and Construction Engineering","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135372331","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 ON THE EFFECT OF ROOF MEMBER CONFIGURATION OF ROOF STRUCTURES CONSISTING OF RADIALLY ARRANGED CABLES ON WIND RESPONSE CHARACTERISTICS 径向布置索屋盖结构屋盖构件构型对风响应特性的影响研究
Journal of Structural and Construction Engineering Pub Date : 2023-10-01 DOI: 10.3130/aijs.88.1453
Akira OSHIUMI, Kazuo KIUCHI, Akira OKADA, Naoya MIYASATO, Shuzo HIROISHI
{"title":"STUDY ON THE EFFECT OF ROOF MEMBER CONFIGURATION OF ROOF STRUCTURES CONSISTING OF RADIALLY ARRANGED CABLES ON WIND RESPONSE CHARACTERISTICS","authors":"Akira OSHIUMI, Kazuo KIUCHI, Akira OKADA, Naoya MIYASATO, Shuzo HIROISHI","doi":"10.3130/aijs.88.1453","DOIUrl":"https://doi.org/10.3130/aijs.88.1453","url":null,"abstract":"Stadium roofs generally require a large opening in the center, and in recent years a roof structure consisting of radially arranged cables has been used in stadium construction outside of Japan. This structure is a lightweight structure in which cables are radially arranged between the inner tension ring and the outer compression ring. However, there are no cases adopted in Japan. In this paper, the authors investigate the effects of the roof configuration and initial tension on the wind response of this structure and attempt to expand the basic design data.","PeriodicalId":38967,"journal":{"name":"Journal of Structural and Construction Engineering","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135372655","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
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