沉管擴底灌注樁在工程中的應(yīng)用
鄭志水 韓敬軍
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鄭志水 (山東省輕工業(yè)設(shè)計院 濟南 250014)韓敬軍 (山東省冶金設(shè)計院)
[提要] 根據(jù)沉管擴底灌注樁的理論計算,結(jié)合工程實例進行靜載試驗、沉降觀測等試驗研究,對沉管擴底灌注樁的技術(shù)特點和經(jīng)濟指標做了對比分析,認為沉管擴底灌注樁優(yōu)于其它樁型,為沉管擴底灌注樁的進一步推廣應(yīng)用提供了依據(jù)。
[關(guān)鍵詞] 沉管擴底灌注樁 泥漿護壁 樁靴 縮頸According to the theoretical calculation about the sinking tubular and expanded bottom placing pile and in combination with the engineering examples, the researches such as test with dead load, settlement observation and so on are made. By means of the analyses on technical peculiarity and economic target, authors draw a conclusion that the sinking tubular and expanded bottom placing pile is superior to the others, which provides the basis for further popular use.
Keywords: sinking tublar and expanded placing pile; grout protected wall; pile shoe; necking