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    林本海  麥勁儒  李業(yè)茂
    （廣東省建筑設(shè)計研究院  廣州 510010）

[提要]  首先對嵌巖灌注樁的承載機(jī)理進(jìn)行了簡要分析，提出應(yīng)以變形和承載力作為雙重控制指標(biāo)進(jìn)行該種樁型的設(shè)計和計算；其次對于強、中風(fēng)化程度軟質(zhì)巖系的巖土工程勘察若干問題進(jìn)行了討論，結(jié)合地區(qū)經(jīng)驗給出了一些經(jīng)驗關(guān)系供參考；同時文中還介紹了一些工程計算實例。
[關(guān)鍵詞]  嵌巖灌注樁 承載力和變形 嵌巖深度 擴(kuò)大頭 強、中風(fēng)化軟質(zhì)巖 強度

At first, the bearing mechanism of cast-in-place piles embedded rock is briefly analysesed. The author
consider that the design and calculation of this kind of piles should base on bearing capacity and settlement. Some geotechnical engineering investigation problems about highly-middle weathered soft rock are discussed and some local experience formulas are given about which normal value of the bearing capacity ( f_k), modulus of compressibility ( E₀), normal value of side friction ( q_s) and normal value of end bearing( q_p). At the same time, some project examples are introduced.
Keywords: cast-in-place piles embedded rock; bearing capacity; settlement, depth of embeded rock;
highly-middle weathered soft rock; design