三明学院学报
三明學院學報
삼명학원학보
JOURNAL OF SANMING COLLEGE
2012年
2期
86-90
,共5页
欠固结%超高边坡%场地适宜性%数值模拟分析
欠固結%超高邊坡%場地適宜性%數值模擬分析
흠고결%초고변파%장지괄의성%수치모의분석
underconsolidation%ultra-high slope%site suitability%numerical simulation analysis
某拟建场地位于山脊山谷地带切削填平的土质边坡上,该边坡总体高度36.4 m,为超高填土边坡,按照规范要求,该类边坡应进行特殊设计。考虑到边坡的自重固结尚未完成,承载能力较低,在工程地质勘查和室内试验获得的土体物理力学性质的基础上,采用FLAC3D对该边坡的场地适宜性进行了数值模拟分析。结果表明:该边坡在自重固结作用下或施加拟建建筑荷载后,产生较大的竖向沉降和水平位移,直接作为建筑场地将存在较大的隐患,需要结合桩锚联合支护等方案进一步研究探讨。
某擬建場地位于山脊山穀地帶切削填平的土質邊坡上,該邊坡總體高度36.4 m,為超高填土邊坡,按照規範要求,該類邊坡應進行特殊設計。攷慮到邊坡的自重固結尚未完成,承載能力較低,在工程地質勘查和室內試驗穫得的土體物理力學性質的基礎上,採用FLAC3D對該邊坡的場地適宜性進行瞭數值模擬分析。結果錶明:該邊坡在自重固結作用下或施加擬建建築荷載後,產生較大的豎嚮沉降和水平位移,直接作為建築場地將存在較大的隱患,需要結閤樁錨聯閤支護等方案進一步研究探討。
모의건장지위우산척산곡지대절삭전평적토질변파상,해변파총체고도36.4 m,위초고전토변파,안조규범요구,해류변파응진행특수설계。고필도변파적자중고결상미완성,승재능력교저,재공정지질감사화실내시험획득적토체물리역학성질적기출상,채용FLAC3D대해변파적장지괄의성진행료수치모의분석。결과표명:해변파재자중고결작용하혹시가의건건축하재후,산생교대적수향침강화수평위이,직접작위건축장지장존재교대적은환,수요결합장묘연합지호등방안진일보연구탐토。
A proposed site is located on underconsolidated soil slope,which is filled valley by cutting the ridge.The overall height of the ultra-high slope is 36.4m,and the slope is underconsolidated with self-weight and the bearing capacity is insufficient,this kind of slope has to be specially designed in accordance with the regulatory requirements.The physical and mechanical of soil properties are obtained by engineering geological prospecting and laboratory tests,then site suitability analysis of the slope is presented with the FLAC3D numerical simulation.The results show that: there are great risks because large vertical subsidence and horizontal displacement of the slope under gravity consolidation or being imposed the proposed building loads,it requires a combination of the pile-anchor joint system for supporting the slope.