風(fēng)化花崗巖超高填方路堤變形規(guī)律研究

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關(guān)鍵詞：超高路堤；風(fēng)化花崗巖；FLAC3D；變形規(guī)律中圖分類號： ；U416 文獻(xiàn)標(biāo)志碼：A

文章編號：1001-5922（2025）05-0131-05

Abstract：Taking the weathered granite filer of theultra-high fillembankment from Huadu to Conghua sectionof the Guangzhou-Lianzhou Expresswayas the research object，the characteristics of the filer were studied through experiments，the numerical model was established byFLAC3D basedonthe ultra-high embankment profileof the K4 462 ＼～ K4 900 section，the vertical displacementof thefield monitoring wasused toverifythe numericalmodel，andthedeformationlawoftheweathered granitefillembankment wasstudied.Theresultsshowedthatwiththeincreaseof thenumberof fillinglayers，theswellingphenomenonoccuredonboth sidesof theembankment，andthehorizontaldiferencebetween the monitoring pointsonboth sides became larger，andthe horizontal displacement directionofthe monitoring pointson both sides was opposite with the DK4 640-6 monitoring point as the dividing line.With the increase of depth，the stress increased stepbystep，and the vertical stress reached1.45MPawhen filing tothe12th floor.The numericalsimulation results werebasicallyconsistent with thefield monitoring results，and the diffrence between them was only1mm，and the research results have theoretical significance for the filing and operation of ultra-high fillembankments.

Key words ：super high embankment ； weathered granite； FLAC3D ；deformation law

花崗巖在我國分布廣泛，主要分布在東南及華南地區(qū)，全風(fēng)化狀態(tài)時具有高壓縮性、不均勻性及遇水易軟化、崩解等特性[1]，填料難以壓實，從而產(chǎn)生路基不均勻沉降、側(cè)向變形、路面產(chǎn)生裂縫等各種沉降變形問題[2-3]。（剩余5659字）