本文關(guān)鍵詞：基于微分層平衡擋土墻土壓力曲線分布計算理論研究的謬誤　出處：《土木工程學(xué)報》2017年05期 　論文類型：期刊論文

  更多相關(guān)文章： 土壓力 擋土墻 微分層 土拱 力矩平衡 有限元

【摘要】：微分層平衡是近50年國內(nèi)外擋土墻土壓力曲線分布計算理論研究方法的基礎(chǔ),其側(cè)土壓力系數(shù)假定方法雖然各不相同但隨墻面摩擦角變化規(guī)律都與庫侖土壓力系數(shù)悖逆卻是共性,推導(dǎo)過程假設(shè)計算的側(cè)土壓力系數(shù)與結(jié)論合力土壓力系數(shù)是僅有定義概念差別的同一物理量卻自相矛盾。根據(jù)微分層平衡所得土壓力分布計算公式數(shù)學(xué)原理,揭示了只要采用此方法得出土壓力為曲線分布的研究成果,必然是假設(shè)與結(jié)論側(cè)土壓力系數(shù)自相矛盾并悖逆經(jīng)典理論的謬論。依該文提出的非極限狀態(tài)土壓力研究方法,有限元模擬計算揭示的變形應(yīng)力成果,表明擋土墻實際的土壓力分布曲線特別是墻底段和鉛直土壓力根本不同于微分層理論計算結(jié)果,進(jìn)一步闡明了微分層平衡模型不能用于考慮墻面摩擦的擋土墻土壓力曲線分布研究,否則假設(shè)與結(jié)論的自相矛盾、墻底段土壓力分布的嚴(yán)重失真而成為謬論,是微分層平衡數(shù)學(xué)原理和力學(xué)模型簡化的內(nèi)在本質(zhì)必然。
[Abstract]:Differential layer balance is the basis for nearly 50 years at home and abroad for retaining wall soil pressure distribution curve on the theoretical calculation method, the lateral earth pressure coefficient method assumes that although different but the regularity of wall friction angle changes and Coulomb earth pressure coefficient is rebellious in common, the derivation process of computation of lateral earth pressure coefficient and the conclusion force of soil the pressure coefficient is the same physical quantity only defines the concept of difference was contradictory. According to the balance of income differential layer distribution of the earth pressure calculation formula of mathematical principle, as long as it reveals the research results for earth pressure distribution curve by this method is the inevitable conclusion hypothesis and the lateral earth pressure coefficient and the classical theory of contradictory rebellious fallacy. According to the research method non limit earth pressure is proposed in this paper, revealing the deformation finite element simulation results show that the stress and pressure of a retaining wall the actual distribution curve of special Is the bottom of the wall section and the vertical earth pressure differential layer is fundamentally different from the theoretical results, and further clarified the differential equilibrium layer model cannot be used in the study of earth pressure distribution curve considering retaining wall wall friction, or the hypothesis and contradictory conclusions, the bottom of the wall section of the distribution of earth pressure serious distortion and become a fallacy, is intrinsic to simplify layer the balance principle of mathematics and mechanics model of differential inevitable.

【作者單位】： 太原理工大學(xué);
【分類號】：TU476.4
【正文快照】： 引言 擋土墻土壓力曲線分布微分層平衡模型研究方法,由蘇聯(lián)學(xué)者卡崗(М.Е.Каган)1960年提出,1964年蔣莼秋給出考慮墻面及填土表面傾角的曲線分布計算公式[1],2001年顧慰慈編入《擋土墻土壓力計算》及《擋土墻土壓力計算手冊》水平層分析法[1-4];1985年Handy用于主應(yīng)力，

本文編號：1369797