上海地區(qū)PHC管樁作抗拔樁的探討
陳岱杰 樊向陽 徐楓
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(上海巖土工程勘察設(shè)計研究院有限公司，上海 200002)［摘要］對現(xiàn)有的抗拔樁設(shè)計進行簡要評述，對PHC管樁作抗拔樁的樁身結(jié)構(gòu)強度、焊縫強度、端板孔口抗剪強度、鋼棒墩頭進行驗算，并對管樁和承臺連接方式進行了探討，提出了填芯連接方式的計算公式。最后通過現(xiàn)場靜載抗拔試驗，驗證了PHC管樁作為抗拔樁的可行性。所得結(jié)論將為PHC管樁作為抗拔樁在工程中的應(yīng)用提供有益的參考依據(jù)。［關(guān)鍵詞］PHC管樁；抗拔；結(jié)構(gòu)強度；焊縫；抗剪強度Study on prestressed high concrete pile as resistant extraction pile in ShanghaiChen Daijie, Fan Xiangyang, Xu Feng
(Shanghai Geotechnical Investigations & Design Institute Co., Ltd., Shanghai 200002, China)
Abstract:The actual design of resistant extraction pile was reviewed, and the structural strength of pile, the strength of weld seam, the shear strength of end sheet, the strength of steel bar′s were analyzed. Also the connecting of pile and foundation slab was discussed, then the calculation formula was proposed. The feasibility to use prestressed high concrete pile as resistant extration pile based on the uplift test in-site is verified. The conclusions are useful for the further using of PHC pile as resistant extraction pile in engineering.Keywords:prestressed high concrete pile; resistant extraction; structural strength; weld; shear strength作者簡介：陳岱杰(1980-)，男，工學(xué)碩士。
