- 摘 要
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（1 國網(wǎng)四川省電力公司經(jīng)濟(jì)技術(shù)研究院， 成都 610041; 2 同濟(jì)大學(xué)土木工程學(xué)院建筑工程系， 上海 200092）
［摘要］在已有研究的基礎(chǔ)上，針對寬高比大于2-5混凝土錐形擴(kuò)展基礎(chǔ)提出下壓和上拔優(yōu)化設(shè)計方法?；诂F(xiàn)有常規(guī)設(shè)計方法及提出的優(yōu)化設(shè)計方法，對四川“500kV山桃Ⅰ,Ⅱ線遷改工程”、“500kV山桃Ⅲ,Ⅳ線遷改工程”進(jìn)行了設(shè)計，并將兩種方法設(shè)計出的基礎(chǔ)的鋼筋、混凝土用量等技術(shù)經(jīng)濟(jì)指標(biāo)進(jìn)行了比較。結(jié)果表明，與現(xiàn)有設(shè)計方法設(shè)計出的常規(guī)擴(kuò)展基礎(chǔ)相比，采用提出的優(yōu)化設(shè)計方法設(shè)計得出的大寬高比混凝土錐形擴(kuò)展基礎(chǔ)能顯著節(jié)省混凝土用量，同時鋼筋用量增加有限，整體經(jīng)濟(jì)效益非常明顯。
［關(guān)鍵詞］混凝土錐形擴(kuò)展基礎(chǔ)； 大寬高比； 優(yōu)化設(shè)計方法； 經(jīng)濟(jì)效益
中圖分類號：TU470+.3文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2018)15-0105-05
Engineering case study on cone-shaped spread concrete foundation with large width-to-height ratio based on optimum design method
Hua Cong1, Wang Wenguang1, Li Yuanqi2, Qin Xiaoliang2
(1 State Grid Sichuan Economic Research Institute, Chengdu 610041, China; 2 Department of Structural Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China)
Abstract:Based on existing studies, a set of optimum design methods for the cone-shaped spread concrete foundation with width-to-height ratio greater than 2-5 under compressive load and uplift load were proposed. With the existing conventional design methods and the optimum design methods proposed, the engineering design of Sichuan “500kV Shantao Ⅰ, Ⅱ Line Relocation Project” and “500kV Shantao Ⅲ, Ⅳ Line Relocation Project” was carried out. The results designed by the two methods, and the technical and economic index, such as the use of steel reinforcement and concrete, were compared. The results showed that, when compared with the traditional spread foundations designed by the existing design method, the use of cone-shaped spread concrete foundations with large width-to-height ratio based on the optimum design method can save the amount of concrete significantly, and the increase of steel reinforcement is limited. The overall economic benefits are obvious.
Keywords:cone-shaped spread concrete foundation; large width-to-height ratio; optimum design method; economic benefit
*國家電網(wǎng)科技項(xiàng)目（52199915002M）。
作者簡介：華聰，碩士，高級工程師，Email：395435458@qq.com。
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