本文關(guān)鍵詞：雙排樁—錨索復(fù)合支護(hù)結(jié)構(gòu)在軟土基坑的應(yīng)用及數(shù)值模擬分析　出處：《遼寧工程技術(shù)大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 雙排樁 錨索 軟土基坑 FLAC~(3D) 數(shù)值模擬

【摘要】：雙排樁-錨索復(fù)合支護(hù)結(jié)構(gòu)是一種較為新穎的基坑支護(hù)技術(shù)，其結(jié)合了樁錨支護(hù)結(jié)構(gòu)與雙排樁支護(hù)結(jié)構(gòu)各自的技術(shù)優(yōu)勢(shì)，并將其結(jié)構(gòu)設(shè)計(jì)成為一個(gè)整體。整體剛度高，，支護(hù)效果好，能有效的控制基坑變形，尤其在軟土地區(qū)得到了成功的實(shí)例應(yīng)用。但目前對(duì)這種結(jié)構(gòu)的研究還不是很多，缺乏現(xiàn)場(chǎng)實(shí)測(cè)數(shù)據(jù)，其理論分析遠(yuǎn)遠(yuǎn)落后于實(shí)際應(yīng)用，在應(yīng)用有限元分析時(shí)大都采用二維平面分析法，對(duì)支護(hù)結(jié)構(gòu)及基坑整體變形特征的認(rèn)識(shí)有局限性。 首先介紹了幾種經(jīng)典土壓力理論，然后對(duì)雙排樁-錨索復(fù)合支護(hù)結(jié)構(gòu)進(jìn)行理論受力分析，運(yùn)用有限元差分法FLAC~(3D)數(shù)值模擬軟件，以營(yíng)口紅運(yùn)廣場(chǎng)（家樂(lè)福）基坑支護(hù)項(xiàng)目為依托，創(chuàng)建三維數(shù)值模型，模擬計(jì)算開(kāi)挖過(guò)程中支護(hù)結(jié)構(gòu)以及基坑的內(nèi)力和變形并與現(xiàn)場(chǎng)實(shí)測(cè)數(shù)據(jù)相對(duì)比，討論分析支護(hù)結(jié)構(gòu)在軟土地區(qū)的變形規(guī)律。同時(shí)應(yīng)用模擬軟件對(duì)影響支護(hù)結(jié)構(gòu)工作性能的諸多因素進(jìn)行比較分析，得出雙排樁-錨索復(fù)合支護(hù)結(jié)構(gòu)在軟土基坑支護(hù)效果良好，可廣泛應(yīng)用。
[Abstract]:Double row pile-anchor cable composite support structure is a relatively novel foundation pit support technology, which combines the technical advantages of pile anchor support structure and double row pile support structure. And the structure is designed as a whole, the overall stiffness is high, the support effect is good, and the deformation of foundation pit can be effectively controlled. Especially in the soft soil area has been successfully applied, but the current research on this structure is not many, the lack of field measured data, its theoretical analysis is far behind the practical application. In the application of finite element analysis, the two-dimensional plane analysis method is mostly used, which has some limitations on the understanding of the deformation characteristics of the supporting structure and the foundation pit as a whole. Firstly, several classical earth pressure theories are introduced, then the theoretical stress analysis of double row pile-anchor cable composite support structure is carried out, and the finite element difference method (FLACU / 3D) is used to simulate the numerical simulation software. Based on the foundation pit support project of Yingkou Hongyun Square (Carrefour), a three-dimensional numerical model was established to simulate and calculate the internal force and deformation of the supporting structure and foundation pit during excavation. The deformation law of supporting structure in soft soil area is discussed and many factors that affect the working performance of supporting structure are compared and analyzed by using simulation software. It is concluded that the double-row pile-anchor-cable composite support structure is effective in supporting soft soil foundation pit and can be widely used.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TU447;TU470

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