本文關(guān)鍵詞： 散體材料樁復(fù)合地基 未打穿 等效雙層地基 平均固結(jié)度 解析解　出處：《巖土力學(xué)》2014年05期 　論文類型：期刊論文

【摘要】：利用平均固結(jié)度普遍解,將未打穿散體材料樁復(fù)合地基轉(zhuǎn)化為等效雙層地基,推導(dǎo)出未打穿散體材料樁復(fù)合地基固結(jié)簡(jiǎn)化解,給出其平均固結(jié)度計(jì)算簡(jiǎn)化公式。根據(jù)簡(jiǎn)化解、現(xiàn)有解和有限單元法編制程序,繪制考慮貫入比、樁體滲透系數(shù)、土體擾動(dòng)區(qū)滲透系數(shù)和土體擾動(dòng)區(qū)影響因子等因素對(duì)固結(jié)的影響曲線圖,分析了各因素對(duì)未打穿散體材料樁復(fù)合地基固結(jié)性狀的影響,并對(duì)3種計(jì)算方法所求出的平均固結(jié)度進(jìn)行了比較研究,進(jìn)而探討了簡(jiǎn)化解的適用性。研究結(jié)果表明,無論是在單面排水還是在雙面排水條件下,簡(jiǎn)化解求出的平均固結(jié)度總體上是介于現(xiàn)有解和有限單元法二者之間,尤其在固結(jié)過程的"中后期"(即固結(jié)度≥50%時(shí))。從實(shí)用角度來看,簡(jiǎn)化解的計(jì)算結(jié)果具有足夠精度,且簡(jiǎn)便、實(shí)用;在各種影響因素中,散體材料樁長(zhǎng)度和樁體滲透系數(shù)對(duì)固結(jié)過程的影響最大。
[Abstract]:By using the general solution of average consolidation degree, the composite foundation with unpierced bulk material pile is transformed into equivalent double-layer foundation, and the simplified consolidation solution of the composite foundation with unpierced bulk material pile is derived, and the simplified formula for calculating the average consolidation degree is given according to the simplified solution. The existing solution and finite element method are used to draw up the influence curves of factors such as penetration ratio, permeability coefficient of pile body, permeability coefficient of soil disturbance zone and influence factor of soil disturbance zone on consolidation. In this paper, the influence of various factors on consolidation behavior of composite foundation with unpierced bulk material pile is analyzed, and the average consolidation degree calculated by three calculation methods is compared, and the applicability of the simplified solution is discussed. The average degree of consolidation obtained by the simplified solution is generally between the existing solution and the finite element method. Especially in the "middle and late stage" of consolidation process (that is, consolidation degree 鈮，

本文編號(hào)：1530756