【摘要】：雙排樁支護(hù)結(jié)構(gòu)作為基坑支護(hù)結(jié)構(gòu),其各種研究與分析并未完全成熟,且國內(nèi)外計(jì)算基坑支護(hù)體系的變形與內(nèi)力有許多地方?jīng)]有充分考慮工程實(shí)際。本文是以雙排樁支護(hù)結(jié)構(gòu)為研究對象,基于彈性支點(diǎn)法的桿系有限元的實(shí)現(xiàn),探究不同因素對雙排樁支護(hù)結(jié)構(gòu)位移和彎矩的影響,為將來的雙排樁支護(hù)結(jié)構(gòu)設(shè)計(jì)與計(jì)算提供理論依據(jù)。本文主要研究內(nèi)容如下:1.建立基于彈性支點(diǎn)法的雙排樁支護(hù)結(jié)構(gòu)計(jì)算模型,并通過經(jīng)驗(yàn)公式法計(jì)算基床系數(shù)和“m”值、按規(guī)范要求運(yùn)用“m”法對土彈簧等效剛度系數(shù)進(jìn)行計(jì)算,運(yùn)用朗肯土壓力計(jì)算公式及修正朗肯土壓力計(jì)算公式對土壓力進(jìn)行計(jì)算;2.運(yùn)用ANSYS有限元軟件建立雙排樁支護(hù)結(jié)構(gòu)有限元模型;3.通過雙排樁支護(hù)結(jié)構(gòu)有限元模型分析影響雙排樁支護(hù)結(jié)構(gòu)內(nèi)力與變形的三個(gè)因素:支護(hù)樁剛度,雙排樁間距和工程地質(zhì)條件;4.結(jié)合工程實(shí)例分別運(yùn)用三種方法(朗肯土壓力公式求解土壓力,修正朗肯土壓力計(jì)算公式求解土壓力以及按規(guī)范要求求解)對雙排樁支護(hù)結(jié)構(gòu)進(jìn)行水平位移分析。
[Abstract]:As the supporting structure of foundation pit, the research and analysis of double-row pile support structure is not fully mature, and there are many places where the deformation and internal force of foundation pit support system are calculated at home and abroad without fully considering the engineering practice. This paper takes the double row pile supporting structure as the research object, based on the elastic fulcrum method to realize the finite element method of the bar system, and probes into the influence of different factors on the displacement and bending moment of the double row pile supporting structure. It provides theoretical basis for the design and calculation of double row pile supporting structure in the future. The main contents of this paper are as follows: 1. The calculation model of double row pile supporting structure based on elastic fulcrum method is established, and the foundation bed coefficient and "m" value are calculated by empirical formula method, and the equivalent stiffness coefficient of soil spring is calculated by "m" method according to the specification requirements. The calculation formula of Rankine earth pressure and the modified Rankine earth pressure formula are used to calculate the earth pressure. The finite element model of double row pile supporting structure is established by ANSYS finite element software. Based on the finite element model of double row pile supporting structure, three factors influencing the internal force and deformation of double row pile supporting structure are analyzed: the stiffness of supporting pile, the spacing of double row pile and the engineering geological condition. Combined with engineering examples, three methods (Rankine earth pressure formula to solve earth pressure, modified Rankine earth pressure formula to solve earth pressure and according to specifications) are used to analyze horizontal displacement of double-row pile supporting structure.
【學(xué)位授予單位】：湖南科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TU473.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 錢銳,葛崇勛,姚恒,陳蕾,茅衛(wèi)兵;深基坑支護(hù)中的位移土壓力計(jì)算模型及計(jì)算方法[J];江蘇建筑;2002年04期

，

本文編號：2134395