The model applies to rheological analysis of high faced rockfill dams 該模型應(yīng)用于高面板堆石壩的流變分析。
The swelling is the secondary reason for large deformation . by the elasticity - plastic fem analysis and the flow deformation analysis through inspecting system to the rock ii3 , getting that the total deformation is within the quantity set aside 通過對(duì)鷓鴣山隧道_ 3圍巖變形性狀進(jìn)行彈塑性有限元數(shù)值計(jì)算并利用監(jiān)控量測資料進(jìn)行軟巖流變分析,得出其總變形在預(yù)留變形量之內(nèi)。
Using 3d 20 - node iso - parameter , 3d 12 - node infinite element and 3d 16 - node interface element , a coupled numerical approach for pile group - soil system under lateral loads is set up . a corresponding three - dimensional , nonlinear and elastic - plastic program ( epagpll ) , include two materials and four nonlinear constitutive relations , is worked out by fortran 90 computer language . in the analysis the nonlinear e - model , k - g model and cambridge model with two yield surfaces are employed in the analysis of near - field soil , and the nonlinear analysis method is used in the piles - soil interface and distant - field soil 本人用有限元進(jìn)行樁體和近域土的分析,對(duì)遠(yuǎn)域土體采用無限單元,在樁土之間采用接觸面單元,建立了平面8節(jié)點(diǎn)環(huán)狀單元6節(jié)點(diǎn)無限元6節(jié)點(diǎn)接觸面單元相耦合的數(shù)值計(jì)算模型;針對(duì)豎直受力樁的流變分析,本人用內(nèi)嵌于autocad的vba語言編制了前處理程序,可以快速形成包括網(wǎng)格、節(jié)點(diǎn)編號(hào)、單元編號(hào)在內(nèi)的數(shù)據(jù)文件,供計(jì)算程序使用;同時(shí)在前人關(guān)于流變問題研究的基礎(chǔ)上,引進(jìn)土體非線性流變本構(gòu)模型,利用有限元、無限元、接觸面單元相結(jié)合的方法,用c + +語言編制了相應(yīng)的計(jì)算程序。