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

    章子華，王振宇，劉國(guó)華，蔣建群
    (浙江大學(xué)水利與海洋工程學(xué)系，杭州310058)

[摘要] 系統(tǒng)闡述風(fēng)機(jī)基礎(chǔ)設(shè)計(jì)理論和方法，主要計(jì)算內(nèi)容包括：荷載組合、地基承載力、變形及穩(wěn)定性、基礎(chǔ)抗沖切和抗剪切承載力等，并指出風(fēng)機(jī)土建結(jié)構(gòu)研究方面的若干個(gè)關(guān)鍵技術(shù)問(wèn)題。以某沿海風(fēng)電場(chǎng)工程為例，介紹了樁基礎(chǔ)布置和承臺(tái)配筋計(jì)算的基本原則，復(fù)核基礎(chǔ)承載力、變形、應(yīng)力等內(nèi)容。計(jì)算表明，基礎(chǔ)變形和抗傾覆能力是基礎(chǔ)設(shè)計(jì)的控制指標(biāo)；應(yīng)控制單樁拉壓應(yīng)力比以減少樁周土在循環(huán)荷載下的累積疲勞效應(yīng)；沿海環(huán)境對(duì)風(fēng)機(jī)基礎(chǔ)有較強(qiáng)的腐蝕性，應(yīng)控制基礎(chǔ)裂縫，必要時(shí)采取防護(hù)措施。
[關(guān)鍵詞] 風(fēng)力發(fā)電；樁基礎(chǔ)；承載力；設(shè)計(jì)

    A review of foundation design for wind turbine in coastal area and engineering application
    Zhang Zihua, Wang Zhenyu, Liu Guohua,  Jiang Jianqun
    (Department of Hydraulic and Ocean Engineering, Zhejiang University, Hangzhou 310058, China)

Abstract: The design theory of wind turbine foundation was discussed systematically, and the calculation matter contained load combination, foundation bearing capacity, stability, deformation, punching resistance, shearing resistance etc. Furthermore, some key technical issues about the construction of wind turbine structure were spread out. Taking a coastal wind farm for example, the principles of pile and bar arrangement were introduced. Meanwhile, bearing capacity, deformation targets and stress were checked. Results show that deformation and overturning resistance ofthe foundation will likely be the control targets. The ratio of compressive and pulling stress in single pile should be controlled to reduce the fatigue effect of soil. The width of crack is limited because of the strong causticity of coastal surroundings, and preventive measures should be taken at a pinch.
Keywords: wind power; pile foundation; bearing capacity; design