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1、J IS JAPANESE INDUSTRIAL STANDARD Translated and Published by Japanese Standards Association Design guide on structures for photovoltaic array ICs 27.160; 91.140.50 Reference number : JI$ C 8955 : 2004 (E) PROTECTED BY COPYRIGHT 18 s Copyright Japanese Standards Association Provided by IHS under lic
2、ense with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 21:48:33 MDTNo reproduction or networking permitted without license from IHS -,-,- C 8955 : 2004 Foreword This translation has been made based on the original Japanese Industrial Standard established by the
3、Minister of Economy, Trade and Industry through deliberations at the Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law. Attention is drawn to the possibility that some parts of this Standard may conflict with a patent right, application for a patent after
4、opening to the public, utility model right or application for registration of utility model after opening to the public which have technical properties. The relevant Minister and the Japanese Industrial Standards Committee are not responsible for identifying the patent right, application for a paten
5、t after opening to the public, utility model right or application for registration of utility model after opening to the public which have the said technical properties. Date of Establishment: 2004-08-20 Date of Public Notice in Official Gazette: 2004-08-20 Investigated by: Japanese Industrial Stand
6、ards Committee Standards Board Technical Committee on Electricity Technology JE C 8955 : 2004, First English edition published in 2005-02 Translated and published by: Japanese Standards Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the content
7、s, the original JIS is to be the final authority. O JSA2005 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan P
8、ROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 21:48:33 MDTNo reproduction or networking permitted without license from IHS -,-,- C 8955 : 2004 Contents Page Introduc
9、tion . 1 2 3 4 4.1 4.2 5 5.1 5.2 5.3 6 7 8 8.1 8.2 8.3 8.4 Scope Normative references Definitions Assumed load . Classification of assumed load Combination of loading condition and load Wind pressure load . Wind pressure load for design Velocity pressure for design Coefficient of wind force . Snow l
10、oad Seismic load Material and its allowable unit stress Selection of material . Allowable unit stress Joining of members . Corrosion protection 1 1 1 1 2 2 2 3 3 3 14 18 26 27 27 27 29 29 (i) PROTECTED BY COPYFtIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicen
11、see=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 21:48:33 MDTNo reproduction or networking permitted without license from IHS -,-,- JAPANESE INDUSTRIAL STANDARD JIS C 8955 : 2004 Design guide on structures for photovoltaic array Introduction This Japanese Industrial Standar
12、d has been prepared based on TR C 0006 Design guide on structures for photouoltaic array published in 1997 by re- viewing it with reference to the domestic related laws and regulations. 1 Scope This Standard specifies the design guide on the structures with the height from the lower end to the upper
13、 end of 4 m or less for a photovoltaic array (hereaf- ter referred to as “array”). In this Standard, the following arrays are excluded. a) The array having the function as building materials such as roof- ing materials and window materials. b) When the array is used at an altitude of exceeding 1 O00
14、 m. c) When the array is installed at a height on the ground of exceed- ing 60 m. Remarks : 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. The most recent editions of the standards (including amendm
15、ents) indicated below shall be applied. JIS C 8951 JIS C 8960 JIS G 3101 JIS G 3106 JIS G 3114 JIS G 3302 JIS G 3350 JIS G 3444 JIS G 3466 JIS H 4100 JIS H 8641 General rules for photovoltaic array Glossary of terms for photovoltaic power generation Rolled steels for general structure Rolled steels
16、for welded structure Hot-rolled atmospheric corrosion resisting steels for welded structure Hot-dip zinc-coated steel sheets and coils Light gauge steels for general structure Carbon steel tubes for general structural purposes Carbon steel square pipes for general structural purposes Aluminium and a
17、luminium alloy extruded shape Zinc hot dip galvanizings 3 Definitions 8951 and JI$ C 8960, and the following definitions apply. a) For the purposes of this Standard, the definitions given in JI$ C structures a generic term of a single pole, a support structure, etc. which is a work piece aiming at s
18、upporting a photovoltaic module (hereafter referred to as “module”) b) fixed load the load permanently added including mass of modules, structures, etc. PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing,
19、 Bernie Not for Resale, 03/13/2007 21:48:33 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 C 8955 : 2004 Short term c) wind pressure load the load by wind pressure force which acts on modules, structures, etc. snow load the load by snow on the surface of modules seismic
20、load d) e) the horizontal seismic force which acts on structures When it snows G i s G i s When it storms G+W GtW G+0.35St W G+0.35SiK When an earthquake occurs G i K f) application coefficient a coefficient to be considered according to the appli- cation for photovoltaic power generating system whe
21、n wind pressure load or seismic load is calculated recurrence interval of wind the average value of the period required for generation of wind with not less than the arbitrary wind speed environmental coefficient a coefficient to be considered when wind pres- sure load is calculated, which is the co
22、efficient determined according to the height of installation site and the condition of geography, natural features, etc. around a construction spot g) h) 4 Assumed load 4.1 sified into four loads as follows: a) Classification of assumed load The load added to structures shall be clas- Fixed load (G)
23、 and mass of structures (GK). Wind pressure load (W) (WM) added to modules and wind pressure force (WK) added to structures. Snow load (S) Seismic load (K) The load obtained by totally summing mass of modules ( G d b) The summation (vector sum) of wind pressure force c) d) The vertical snow load to
24、a module plane. The horizontal seismic force added to structures. 4.2 condition and load shall be as given in table 1. Combination of loading condition and load The combination of loading Table 1 Loading condition and combination I Loading condition I General district I District of heavy snowfall 1
25、G I G I I Gt0.7S I In addition, the district of heavy snowfall shall be either of the following condi- tions: - The district with a vertical snow accumulation specified in 6 c) of 1 m or more. PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicen
26、see=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 21:48:33 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 C 8955 : 2004 - The district where the average of the number of days between the first day of snow cover and the end day of snow cover (whic
27、h refers to the number of days of the period during which the condition that the ratio of the snow cover part to the district concerned exceeds 1/2 continues) is 30 days or more. 5 Wind pressure load 5 . 1 array shall be calculated according to the formula (1). Wind pressure load for design The wind
28、 pressure load which acts on an . (1) W = Cw x q x Aw where, W: wind pressure load (N) Cw : coefficient of wind force q : velocity pressure for design (N m-2 Aw : receiving area of wind (m2) (area projected on a vertical plane of an array plane, see table 6) 5.2 Velocity pressure for design The velo
29、city pressure for design shall be cal- culated according to the formula (2). q = 0.6 x Vo2 x E x I (2) where, q : velocity pressure for design (N m-2) Vo : reference wind speed for design (m - s-1) E : environmental coefficient I : application coefficient a) Reference wind speed for design The wind
30、speed given in table 2 which is determined in the range from 30 m s-1 to 46 m s-1 shall be used according to the degree of wind hazard and the nature of other wind based on the past record of typhoon in the district of construction spot. PROTECTED BY COPYRIGHT Copyright Japanese Standards Associatio
31、n Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 21:48:33 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 C 8955 : 2004 Table 2 Reference wind speed for design Applicable district Districts other than
32、the district described from (2) to (9) In Hokkaido Sapporo-Shi, Otaru-shi, Abashiri-shi, Rumoi-Shi, Wakkanai-shi, Ebetsu-Shi, Mombetsu-Shi, Nayoro-Shi, Chitose-Shi, Eniwa-chi, Kitahiroshima-Shi, Ishikari-Shi, Ishikari-gun, Atsuta-gun, Hamamasu-gun, Namporo-Cho in Sorachi-gun, Yuni-Cho and Naganuma-C
33、ho in Yubari-gun, Furen-Cho and Shimokawa-cho in Kamikawa-gun, Bifuka-Cho, Otoineppu-mura, and Nakagawa-Cho in Nakagawa-gun, Mashike-gun, Rumoi-gun, Tomamae-gun, Teshio- gun, Soya-gun, Esashi-gun, Rebun-gun, Rishiri-gun, Higashimokoto- mura, Memambetsu-Cho, and Bihoro-Cho in Abashiri-gun, Kiyosato-C
34、ho and Koshimizu-Cho in Shari-gun, Tanno-Cho, Saroma- cho, and Tokoro-Cho in Tokoro-gun, Kamiyubetsu-Cho, Yubetsu-cho, Okoppe-Cho, Nishiokoppe-mura, and Oumu-Cho in Mombetsu-gun, Oiwake-Cho and Hobetsu-Cho in Yufutsu-gun, Biratori-Cho in Saru- gun, Niikappu-gun, Shizunai-gun, Mitsuishi-gun, Urakawa-
35、gun, Samani-gun, Horoizumi-gun, Akkeshi-Cho in Akkeshi-gun, Kawakami-gun. In Iwate-ken Kuji-Shi, Kuzumaki-machi in Iwate-gun, Tanohata-mura and Fudai- mura in Shimo-Hei-gun, Noda-mura and Yamagata-mura in Kunohe-gun, Ninohe-gun. In Akita-ken Akita-Shi, Odate-Shi, Honjo-shi, Kazuno-Shi, Kazuno-gun, T
36、akanosu- machi, Hinai-machi, Aikawa-machi and Kami-Koani-mura in Kita- Akita-gun, Gojome-machi, Showa-machi, Hachirogata-machi, Iitagawa-machi, Tenno-machi and Ikawa-machi in Minami-Akita- gun, Nikaho-machi, Kanaura-machi, Kisakata-machi, Iwaki-machi and Nishime-machi in Yuri-gun. In Yamagata-ken Ts
37、uruoka-Shi and Sakata-Shi, Nishi-Tagawa-gun, Yuza-machi in Akumi-gun. In Ibaraki-ken Mito-Shi, Shimotsuma-Shi, Hitachinaka-shi, Uchihara-Cho in Higashi-Ibaraki-gun, Tomobe-machi and Iwama-machi in Nishi- Ibaraki-gun, Yasato-machi in Niihari-gun, Akeno-machi and Makabe-machi in Makabe-gun, Yki-gun, G
38、oka-machi, Sashima- machi and Sakai-machi in Sashima-gun. In Saitama-ken Kawagoe-Shi, Omiya-Shi, Tokorozawa-Shi, Sayama-shi, Ageo-shi, Yono-shi, Iruma-Shi, Okegawa-Shi, Kuki-chi, Fujimi-shi, Kami- Fukuoka-Shi, Hasuda-Shi, Satte-Shi, Ina-machi in Kita-Adachi-gun, Oi-machi and Miyoshi-machi in Iruma-g
39、un, Minami-Saitama-gun, Kurihashi-machi, Washimiya-machi, and Sugito-machi in Kita- Katsushika-gun. Reference wind speed (m. s-l) 30 32 PROTECTED BY COPYRIGHT Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for R
40、esale, 03/13/2007 21:48:33 MDTNo reproduction or networking permitted without license from IHS -,-,- 5 C 8955 : 2004 Number Table 2 (continued) Applicable district In Tokyo-to Hachioji-Shi, Tachikawa-Shi, Akishima-Shi, Hino-Shi, Higashi- Murayama-Shi, Fussa-Shi, Higashi-Yamato-Shi, Musashi Murayama-
41、 Shi, Hamura-Shi, Akiruno-Shi, Mizuho-machi in Nishitama-gun. In Kanagawa-ken Yamakita-machi in Ashigara-Kami-gun, Tsukui-machi, Sagamiko- machi and Fujino-machi in Tsukui-gun. In Niigata-ken Ryotsu-Shi, Sado-gun, Sanpoku-machi and Awashimaura-mura in Iwafune-gun. In Fukui-ken Tsuruga-Shi, Obama-Shi
42、, Mikata-gun, Onyu-gun, Oi-gun. In Yamanashi-ken Fuji Yoshida-Shi. Nanbu-Cho and Tomizawa-Cho in Minami-Koma- gun, Akiyama-mura, Dshi-mura, Oshino-mura, Yamanakako-mura, and Narusawa-mura in Minami-Tsuru-gun. In Gifu-ken Tajimi-Shi, Seki-Shi, Mino-Shi, Minokamo-Shi, Kakamigahara-Shi, Kani-Shi, Fujih
43、ashi-mura and Sakauchi-mura in Ibi-gun, Neo-mura in Motosu-gun, Yamagata-gun, Horado-mura and Mugegawa-Cho in Mugi-gun, Sakahogi-Cho and Tomika-Cho in Kamo-gun. In Shizuoka-ken Shizuoka-Shi, Hamamatsu-Shi, Shimizu-Shi, Fujinomiya-Shi, Shimada-Shi, Iwata-chi, Yaizu-Shi, Kakegawa-Shi, Fujieda-Shi, Fuk
44、uroi-Shi, Kosai-chi, Fuji-gun, Ihara-gun, Shida-gun, Omaezaki- Cho, Sagara-Cho, Haibara-Cho, Yoshida-Cho and Kanaya-Cho in Haibara-gun, Ogasa-gun, Asaba-Cho, Fukude-Cho, Ryuyo-Cho, and Toyoda-cho in Iwata-gun, Hamana-gun, Hosoe-Cho and Mikkabi-cho in Inasa-gun. In Aichi-ken Toyohashi-Shi, Seto-Shi,
45、Kasugai-Shi, Toyokawa-chi, Toyota-Shi, Komaki-Shi, Inuyama-Shi, Owariasahi-chi, Nisshin-Shi, Aichi-gun, Niwa-gun, Nukata-Cho in Nukata-gun, Hoi-gun, Miyoshi-Cho in Nishi-Kamo-gun. In Shiga-ken Otsu-Shi, Kusatsu-Shi, Moriyama-Shi, Shiga-gun, Kurita-gun, Ika- gun, Takashima-gun. Kyoto-fu In Osaka-fu T
46、akatsuki-chi, Hirakata-Shi, Yao-Shi, Neyagawa-Shi, Daito-Shi, Kashiwara-Shi, Higashi-Osaka-Shi, Shijonawate-Shi, Katano-Shi, Mishima-gun, Taishi-Cho, Kanan-Cho and Chihayaakasaka-mura in Minami-Kawachi-gun. Reference wind speed (rn*s-l) 32 PROTECTED BY COPYRIGHT Copyright Japanese Standards Associat
47、ion Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/13/2007 21:48:33 MDTNo reproduction or networking permitted without license from IHS -,-,- 6 C 8955 : 2004 Table 2 (continued) Number Applicable district In Hyogo-ken Himeji-shi, Aioi-sh
48、i, Toyooka-shi, Tatsuno-shi, Ako-shi, Nishiwaki- chi, Kasai-chi, Sasayama-shi, Taka-gun, Shikama-gun, Kanzaki-gun, Ibo-gun, Ako-gun, Shisou-gun, Kinosaki-gun, Izushi-gun, Mikata- gun, Yabu-gun, Asago-gun, Hikami-gun. In Nara-ken Nara-Shi, Yamato-Takada-Shi, Yamato-Koriyama-Shi, Tenri-shi, Kashihara-shi, Sakurai-shi, Gose-shi, Ikoma-shi, Kashiba-shi, Soekami-gun, Yamabe-gun, Ikoma-gun, Shiki-gun, Ouda-Cho, Utano- Cho, Haibara-Cho, and Murou-mura in Uda-gun, Takaichi-gun, Kita- Katsuragi-gun. In Tottori-ken Tottori-Shi, Iwami