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（1 同濟(jì)大學(xué)建筑設(shè)計(jì)研究院  上海 200092； 2  同濟(jì)大學(xué)建筑工程系  上海 200092）
【提要】  南通市體育會(huì)展中心體育場(chǎng)是目前國(guó)內(nèi)跨度最大的開(kāi)閉式結(jié)構(gòu)，采用整體式H型鋼筋混凝土環(huán)梁加預(yù)應(yīng)力管樁承臺(tái)的基礎(chǔ)形式。環(huán)梁承受水平荷載，預(yù)應(yīng)力管樁承受豎向荷載，施工期間采取構(gòu)造措施避免管樁水平破壞。利用有限元計(jì)算軟件ANSYS對(duì)環(huán)梁基礎(chǔ)進(jìn)行受力計(jì)算，證明自平衡環(huán)梁基礎(chǔ)是軟土地區(qū)承受上部結(jié)構(gòu)巨大水平荷載的一種有效結(jié)構(gòu)形式。
【關(guān)鍵詞】  開(kāi)閉式結(jié)構(gòu)  自平衡環(huán)梁基礎(chǔ)  有限元計(jì)算  H型截面
Design of Selfequilibrium Reinforced Concrete Foundation of Circular Beam in H Section/Zheng Yimin1，Liu Yongcan2，Li Jie2，Shen Weiyu1 （1 The Architectural Design & Research Institute，Tongji University，Shanghai 200092，China； 2 Department of Building Engineering，Tongji University，Shanghai 200092，China）
Abstract:Nantong Sports Exhibition Center Stadium has the biggest span among the existing openingclosing structures in China. It adopts the foundamental form of integrated H section reinforced concrete circular beam and prestressed pipe pile cap. The horizontal load is born by the circular beam and the vertical load is born by the prestressed pipe pile. During the construction，tectonic measures are adopted in order to avoid horizontal destruction of pipe pile. Finite element method software ANSYS is utilized to measure the pressure on the foundation of circular beam in order to prove that selfequilibrium foundation of circular beam is an effective structure for soft soil field to bear great horizontal load from upper structure.
Keywords:openingclosing structure； selfequilibrium foundation；circular beam； finite element method； H section