884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

（中國(guó)電力科學(xué)研究院， 北京 100192）

［摘要］以輸電鐵塔十字組合雙角鋼構(gòu)件為研究對(duì)象，對(duì)美國(guó)《輸電鐵塔設(shè)計(jì)導(dǎo)則》（ASCE 10）、英國(guó)《鐵塔設(shè)計(jì)規(guī)范》（BS 8100）、歐洲《45kV以上交流架空輸電線路設(shè)計(jì)規(guī)范》（EN 50431）中關(guān)于十字組合雙角鋼軸心受壓構(gòu)件穩(wěn)定承載力計(jì)算方法進(jìn)行了介紹，并與我國(guó)《架空送電線路桿塔結(jié)構(gòu)設(shè)計(jì)技術(shù)規(guī)定》（DL/T 5154）及《鋼結(jié)構(gòu)設(shè)計(jì)規(guī)范》（GB 50017）進(jìn)行對(duì)比分析。結(jié)果表明：對(duì)于十字組合雙角鋼構(gòu)件穩(wěn)定性，GB 50017和ASCE 10同時(shí)考慮扭轉(zhuǎn)屈曲和彎曲屈曲，DL/T 5154，EN 50431，BS 8100僅考慮彎曲屈曲；對(duì)于十字組合雙角鋼構(gòu)件彎曲長(zhǎng)細(xì)比，DL/T 5154按實(shí)腹式構(gòu)件計(jì)算兩個(gè)軸的彎曲長(zhǎng)細(xì)比，BS 8100和EN 50431對(duì)于虛軸采用換算長(zhǎng)細(xì)比進(jìn)行計(jì)算；對(duì)于輸電鐵塔十字組合雙角鋼構(gòu)件的軸壓穩(wěn)定抗力，BS 8100和EN 50431計(jì)算結(jié)果接近，且大于DL/T 5154計(jì)算結(jié)果，ASCE 10計(jì)算結(jié)果大于GB 50017。

［關(guān)鍵詞］輸電鐵塔; 十字組合雙角鋼; 軸壓穩(wěn)定抗力; 設(shè)計(jì)規(guī)范

中圖分類號(hào)：TU202      文獻(xiàn)標(biāo)識(shí)碼：A      文章編號(hào)：1002-848X(2014)06-0055-05

Comparison of stability on the cruciform double angle section members of transmission towers in design codes

Han Junke, Qiu Shuqing

（China Electric Power Research Institute, Beijing 100192, China）

Abstract: Taking the stability on the cruciform double angle section members of transmission towers as the research object, the stability capacity calculation of axial compressive members on transmission towers specified in Design of latticed steel transmission structures(ASCE 10), Lattice towers and masters (BS 8100) and Overheard electrical lines exceeding AC 45kV(EN 50431) was presented and made a comparison with Technical regulation of design for tower and pole structures of overhead transmission line (DL/T 5154) and Code for design of steel structures(GB 50017). The results show that: it needs to calculate the flexural buckling and torsional buckling modes of cruciform double angle section members in GB 50017 and ASCE 10, but it only needs to calculate the flexural buckling mode in DL/T 5154，EN 50431 and BS 8100; the slenderness ratio of flexural buckling is calculated against buckling transversely to the material axis as a single compression member in DL/T 5154, but the equivalent slenderness ratio is calculated against buckling transversely to the nonmaterial principal axis in BS 8100 and EN 50431; for the axial stability resistance on cruciform double angle section members of transmission towers, the results of BS 8100 and EN 50431 are very close, and they are greater than that of DL/T 5154, the result of ASCE 10 is greater than that of GB 50017.

Keywords: transmission tower; cruciform double angle section member; axial stability resistance; design code

*國(guó)家自然科學(xué)基金項(xiàng)目（51178014），國(guó)家電網(wǎng)公司科技項(xiàng)目（GY110025）。

作者簡(jiǎn)介：韓軍科，博士研究生，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：hjk@epri.sgcc.com.cn。

參考文獻(xiàn)

［1］韓軍科, 楊靖波, 楊風(fēng)利,等. 超/特高壓同塔多回輸電線路脫冰跳躍動(dòng)力響應(yīng)分析［J］. 電網(wǎng)技術(shù), 2012, 36(9): 61-67.

［2］韓軍科, 楊靖波, 李清華,等. 超/特高壓交流同塔多回輸電線路覆冰不平衡張力分析［J］. 電網(wǎng)技術(shù), 2011, 35(12): 33-37.

［3］韓軍科, 楊靖波, 楊風(fēng)利,等. 特高壓鋼管塔主材長(zhǎng)細(xì)比及徑厚比的取值［J］. 電網(wǎng)技術(shù), 2009, 33(19): 17-20. 

［4］張邀宇, 田國(guó)平, 默增祿,等. 1000kV特高壓雙回輸電線路鋼管塔橫擔(dān)結(jié)構(gòu)布置形式［J］. 電力建設(shè), 2012, 33(11): 79-81.

［5］施菁華, 秦慶芝, 帥群,等. Q460特高壓雙回路鋼管塔真型試驗(yàn)分析［J］. 電力建設(shè), 2011, 32(4):29-33.

［6］DL/T 5154—2002 架空送電線路桿塔結(jié)構(gòu)設(shè)計(jì)技術(shù)規(guī)定［S］. 北京：中國(guó)電力出版社，2002.

［7］GB 50017—2003 鋼結(jié)構(gòu)設(shè)計(jì)規(guī)范［S］.北京：中國(guó)計(jì)劃出版社，2003.

［8］左元龍，付鵬程. 螺栓連接組合角鋼的整體穩(wěn)定及分肢計(jì)算［J］. 電力建設(shè)，2013，34(5)：80-85.

［9］郭勇, 沈建國(guó), 應(yīng)建國(guó)，等. 輸電塔組合角鋼構(gòu)件穩(wěn)定性分析［J］. 鋼結(jié)構(gòu), 2012, 27(1): 11-16.

［10］黃蘭蘭, 李振寶, 唐貞云，等. 扭轉(zhuǎn)屈曲對(duì)十字截面軸心壓桿承載力的影響［J］. 電力建設(shè), 2010, 31(6): 1-5.

［11］ASCE 10-97 Design of latticed steel transmission structures［S］. American Society of Civil Engineers, 1998.

［12］BS 8100-3 Lattice towers and masters, Part 3: Code of practice for strength assessment of members of lattice towers and masts［S］. Building and Civil Engineering Sector Committee, 2001.

［13］EN 50341-1 Overheard electrical lines exceeding AC 45kV,Part 1:General requirements-common specifications［S］.European Committee for Electrotechnical Standardization, 2001.