本文選題：超深基坑 + 樁錨支護(hù)��； 參考：《河北工程大學(xué)》2013年碩士論文

【摘要】：隨著經(jīng)濟(jì)的發(fā)展,城市化的進(jìn)程越來越快,對地下空間的開發(fā)的需求也越來越大。越來越多的超深基坑在巖土工程界誕生。超深基坑在進(jìn)行設(shè)計時不僅要確保在施工中,基坑的穩(wěn)固安全,還要盡可能的節(jié)約材料,這樣能夠很大程度上節(jié)約成本。本文主要研究的超深基坑中一種常見的支護(hù)結(jié)構(gòu)——樁錨支護(hù)結(jié)構(gòu)。文章主要結(jié)合石家莊槐底村二期改造的超深基坑工程中的一個典型樁錨支護(hù)區(qū)域進(jìn)行展開的,具體主要研究內(nèi)容如下： (1)對國內(nèi)深基坑的研究現(xiàn)狀以及有限元數(shù)值模擬方法在基坑設(shè)計方面的應(yīng)用進(jìn)行了闡述和總結(jié),隨后介紹了本課題的研究內(nèi)容與方法； (2)介紹樁錨支護(hù)體系的特點,工作機(jī)理以及破壞模式及原因,同時,通過查閱相關(guān)資料分析總結(jié)了樁錨支護(hù)結(jié)構(gòu)體系的設(shè)計計算方法,并結(jié)合工程實例,利用理正分析軟件及相應(yīng)的計算公式計算出了工程實例的樁錨支護(hù)結(jié)構(gòu)樁體位移、土壓力、剪力等等,根據(jù)計算結(jié)果進(jìn)行了相應(yīng)的總結(jié)分析。為工程提出一些可行性建議； (3)對MIDAS/GTS做了簡單的介紹,然后從操作過程、軟件的分析功能以及材料模型上對MIDA/GTS進(jìn)行了闡述。隨后,利用MIDA/GTS對石家莊某超深基坑建立了模型,利用有限元MIDAS/GTS對實際工程進(jìn)行數(shù)值模擬,從土體應(yīng)力、變形,樁體的變形、剪力及彎矩,錨桿的軸力等方面進(jìn)行了全面的分析與研究,并且結(jié)合監(jiān)測數(shù)據(jù)進(jìn)行對比分析,得出相應(yīng)的結(jié)論。對研究的實際工程的設(shè)計與施工提出了可行性的建議。 通過對實際工程的計算與研究得出結(jié)論：與理正計算和實際監(jiān)測的結(jié)果相比,MIDAS/GTS用于樁錨支護(hù)的模擬結(jié)果是可靠的。采用MIDAS/GTS對樁錨支護(hù)結(jié)構(gòu)進(jìn)行模擬設(shè)計是可行的。
[Abstract]:With the development of economy, the process of urbanization is getting faster and faster. More and more ultra-deep foundation pit is born in geotechnical engineering field. In the design of ultra-deep foundation pit, we should not only ensure the stability and safety of the foundation pit in construction, but also save the material as much as possible, which can save the cost to a great extent. In this paper, a common supporting structure-pile-anchor support structure in ultra deep foundation pit is studied. This paper mainly combines with a typical pile-anchor supporting area in the ultra-deep foundation pit reconstruction of Huaidi Village, Shijiazhuang. The main research contents are as follows: (1) the research status of deep foundation pit in China and the application of finite element numerical simulation method in foundation pit design are expounded and summarized, and then the research content and method of this subject are introduced. (2) the characteristics, working mechanism, failure mode and reason of pile anchor support system are introduced. At the same time, the design and calculation method of pile anchor support structure system is analyzed and summarized by consulting relevant data, and combined with engineering example. The pile displacement, earth pressure and shear force of pile-anchor supporting structure are calculated by using the software of positive analysis and the corresponding calculation formula, and the corresponding summary and analysis are carried out according to the calculation results. Some feasible suggestions for the project are put forward. (3) the MIDas / GTS is introduced briefly, and then the midas / GTS is described from the operation process, the analysis function of the software and the material model. Then, the model of a super deep foundation pit in Shijiazhuang was established by Mida / GTS. The finite element MIDAS-GTS was used to simulate the actual project. The stress, deformation, shear force and bending moment of the pile were analyzed in terms of soil stress, deformation, pile deformation, shear force and bending moment. The axial force of the bolt is analyzed and studied comprehensively, and the corresponding conclusions are obtained by comparing and analyzing the monitoring data. Some feasible suggestions on the design and construction of the actual project are put forward. Through the calculation and research of practical engineering, it is concluded that the simulation results of MIDAS-GTS used in pile-anchor support are reliable compared with the results of direct calculation and actual monitoring. It is feasible to use midas / GTS to simulate and design pile-anchor support structure.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TU473.2

【引證文獻(xiàn)】

相關(guān)博士學(xué)位論文 前1條

1 胡賀松;深基坑樁錨支護(hù)結(jié)構(gòu)穩(wěn)定性及受力變形特性研究[D];中南大學(xué);2009年

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本文編號：2057380