- 摘 要
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（廣州市建筑科學研究院有限公司， 廣州 510440）
［摘要］ 針對采用大直徑隨鉆跟管樁工法施工的管樁樁頭是否需要加套箍的問題進行了詳細探討，分別從樁頭開裂彎矩、抗拉力、夾持力幾個方面進行了綜合分析。提出了有套箍大直徑PHC管樁樁頭的正截面開裂彎矩計算公式和抗拉力計算公式，表明在大直徑隨鉆跟管樁設(shè)計制作中取消套箍是切實可行的。
［關(guān)鍵詞］大直徑隨鉆跟管樁；樁套箍；開裂彎矩；抗拉力
中圖分類號： TU473.1 文獻標識碼： A文章編號： 1002-848X(2016)S1-0791-04
Influence analysis of drilling with large diameter pipe pile′s ferrule on the pile head quality
Tang Mengxiong, Qi Yuliang, Hu Hesong
（Guangzhou Institute of Building Science Co., Ltd., Guangzhou 510440, China)
Abstract: The problem whether need pile ferrule on the pile head constructed by the method of drilling with large diameter pipe pile was discussed in detail. A comprehensive analysis was conducted from several aspects of the pile head′s cracking moment, tensile strength, the clamping force. The normal section cracking moment calculation formula and tensile strength calculation formula of piles head of large diameter PHC pile with existing pile ferrule were put forward. it is feasible to cancel pile ferrule in the design and production of drilling with large diameter pipe pile.
Keywords: drilling with large diameter pipe pile; pile ferrule; cracking moment; anti-tensile force
作者簡介： 唐孟雄，博士，教授級高工，一級注冊土木工程師（巖土），一級注冊建造師，Email: tmx@gibs.com.cn。*廣東省應(yīng)用型科技研發(fā)重大專項資金項目(2015B020238014)。
