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顏慶智¹，劉太強(qiáng)¹，付長(zhǎng)波²
(1 中國(guó)石油大學(xué)儲(chǔ)建學(xué)院，青島266555; 2 海工英派爾工程有限公司，青島266061)

[摘要] 采用水泥土的無(wú)側(cè)限抗壓強(qiáng)度計(jì)算單樁極限承載力，采用漢森公式計(jì)算樁問(wèn)土極限承載力，按面積置換率復(fù)合法確定粉噴樁復(fù)合地基的極限承載力，以直接分析法建立了粉噴樁復(fù)合地基承載力極限狀態(tài)方程。并結(jié)合工程實(shí)例，進(jìn)行了粉噴樁復(fù)合地承載力可靠度影響因素的分析。
[關(guān)鍵詞] 粉噴樁復(fù)合地基；隨機(jī)變量；可靠度指標(biāo)

Study of bearing capacity by Hansen formula and analysis on reliability of dry jet mixing pile composite foundation
Yan Qingzhi¹, Liu Taiqiang¹, Fu Changbo²
(1 China University of Petroleum, Qingdao 266555, China; 2 COOEC-ENPAL Engineering Co., Ltd., Qingda0 266061, China)

Abstract: Single pile capacity was calculated by way of unconfined compressive strength of cement-clay in capacity reliability of dry jet mixing pile composite foundation. Hansen formula was also applied for pile clay capacity. Meantime, capacity and lim/t state equation of dry jet nuxing pile composite foundation is established respectively by area ratio formula and direct analysis method. Finally, by the impact of capacity reliability of dry jet mixing pile composite foundation,  influencing factors were studied by way of practical engineering examples.
Keywords: dryjet mixing pile composite foundation; random variable; reliability index