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（浙江大學(xué)建筑設(shè)計(jì)研究院有限公司， 杭州 310028）
［摘要］ 為進(jìn)一步研究抗拔樁承臺的應(yīng)力分布情況，確定承臺周邊是否需要配置豎向鋼筋，通過有限元方法對幾種典型的抗拔樁承臺進(jìn)行了數(shù)值模擬。結(jié)果表明，抗拔樁承臺與底板交界處存在較大的拉應(yīng)力，如果不加區(qū)別地統(tǒng)一按普通承臺配置鋼筋可能會存在一定的工程隱患。承臺周邊配置適當(dāng)?shù)呢Q向鋼筋是必要的。承臺與底板交接處有較明顯的應(yīng)力集中現(xiàn)象，當(dāng)承臺高度與底板厚度相差較大時建議在承臺與底板交接處設(shè)置加腋措施以減小應(yīng)力集中。
［關(guān)鍵詞］抗拔樁承臺； 數(shù)值模擬； 有限元； 應(yīng)力集中
中圖分類號： TU473.1 文獻(xiàn)標(biāo)識碼： A文章編號： 1002-848X(2016)S1-0795-04
Study on numerical simulation of cushion cap for uplift pile
Lin Wei, Wu Jie， Zhou Jianlu
（Architectural Design and Research Institute of Zhejiang University Co., Ltd., Hangzhou 310028, China）
Abstract: In order to study on stress distribution of uplift pile cushion cap, to determine whether need to configure the base slab of vertical reinforcement, through the finite element method, the numerical simulation of several typical uplift pile caps was carried out. The results show that larger tensile stress appears in pile pile cap. There may be some engineering problems if indiscriminate unified by common platform configuration reinforced. It is necessary to properly equip some vertical reinforcement in the cap of uplift pile. There is obvious stress concentration phenomenon of cap and floor junction. When the thickness of cap and floor height difference is large, it is suggested a haunch measures to reduce the stress concentration in the cap and floor junction.
Keywords: cushion cap of uplift pile; numerical simulation; finite element; stress concentration
作者簡介： 林巍，碩士，一級注冊結(jié)構(gòu)工程師，Email:lwinners@163.com。
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