- 摘 要
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李建軍1,2,梁仁旺3,毛虎平1(1 中北大學(xué),太原 030051; 2 晉城煤業(yè)集團(tuán),晉城 048006;3 太原理工大學(xué)建筑與土木工程學(xué)院,太原 030024)
[摘要]為了滿足現(xiàn)行國(guó)家規(guī)范和行業(yè)規(guī)范關(guān)于工程樁應(yīng)進(jìn)行單樁承載力檢驗(yàn)的強(qiáng)制性條文規(guī)定,同時(shí)也為了探討一種大直徑嵌巖灌注樁省時(shí)、省力和低成本的檢測(cè)方法,在錨樁抗拔承載力不足的情況下,結(jié)合工程現(xiàn)場(chǎng)條件和工程地質(zhì)條件,通過增加工程樁樁身配筋和對(duì)樁底施加巖石錨桿,提高了單樁抗拔承載力。在此基礎(chǔ)上設(shè)計(jì)了樁底巖石錨桿錨樁橫梁反力裝置,完成了24 000kN大噸位靜載試驗(yàn)。通過工程實(shí)踐,證明了該方法是一種行之有效的大直徑嵌巖灌注樁豎向承載力檢測(cè)方法。
[關(guān)鍵詞]嵌巖灌注樁;靜載試驗(yàn);巖石錨桿;抗拔承載力
中圖分類號(hào):TU413-4文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1002-848X(2012)01-0115-05
Static loading test of large-diameter and rock-socketed cast-in-place pile
Li Jianjun1,2, Liang Renwang3, Mao Huping1(1 North University of China, Taiyuan 030051, China; 2 Jincheng Anthracite Mining Group, Jincheng 048006, China;3 College of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China)
Abstract:In order to meet the compulsory provisions of the current national standards and industry standards of the bearing capacity of the engineering pile and to explore a large diameter rock-socketed pile testing method of time-saving, labor-saving and low cost, combining with the engineering field conditions and the engineering geological conditions, and adding the reinforcement ratio of foundation piles and the rock anchors under the base of piles, the tension carrying capacity of piles were raised. The counter-force devices of the rock anchor rod-anchor pile-beam were designed, and the static loading test of 24 000kN was finished. According to the engineering practice, it is proved that the test method of the vertical bearing capacity of the large diameter rock-socketed pile is effective.
Keywords:rock-socketed cast-in-place pile; static loading test; rock anchor; tension carrying capacity
作者簡(jiǎn)介:李建軍,博士,副教授,Email:ljjjc@163.com。
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