同济大学学报（自然科学版）
同濟大學學報（自然科學版）
동제대학학보（자연과학판）
JOURNAL OF TONGJI UNIVERSITY(NATURAL SCIENCE)
2009年
10期
1308-1312
,共5页
围岩变形%流变试验%自适应遗传算法%粘弹性%动态增量反演
圍巖變形%流變試驗%自適應遺傳算法%粘彈性%動態增量反縯
위암변형%류변시험%자괄응유전산법%점탄성%동태증량반연
surrounding rock deformation%rheology experiment%adaptive genetic algorithm%viscoelastic%incremental backward analysis
对深圳莲盐高速公路隧道围岩中的凝灰熔岩进行了流变试验,得到了围岩的流变模型;结合隧道的施工过程,根据围岩的收敛变形和拱顶下沉,采用改进的自适应遗传算法对粘弹性位移进行优化反分析,并利用反演得到的围岩参数,如弹性模量、粘滞系数等对变形进行预测.研究表明,利用试验得到的围岩流变模型,结合隧道施工过程的动态增量反演分析,可以较好地模拟围岩的实际性态,对指导施工具有重要意义.
對深圳蓮鹽高速公路隧道圍巖中的凝灰鎔巖進行瞭流變試驗,得到瞭圍巖的流變模型;結閤隧道的施工過程,根據圍巖的收斂變形和拱頂下沉,採用改進的自適應遺傳算法對粘彈性位移進行優化反分析,併利用反縯得到的圍巖參數,如彈性模量、粘滯繫數等對變形進行預測.研究錶明,利用試驗得到的圍巖流變模型,結閤隧道施工過程的動態增量反縯分析,可以較好地模擬圍巖的實際性態,對指導施工具有重要意義.
대심수련염고속공로수도위암중적응회용암진행료류변시험,득도료위암적류변모형;결합수도적시공과정,근거위암적수렴변형화공정하침,채용개진적자괄응유전산법대점탄성위이진행우화반분석,병이용반연득도적위암삼수,여탄성모량、점체계수등대변형진행예측.연구표명,이용시험득도적위암류변모형,결합수도시공과정적동태증량반연분석,가이교호지모의위암적실제성태,대지도시공구유중요의의.
Based on the rheology experiment on tufflava on tunnel of Lianyan expressway of Shenzhen and the analysis of test results as well as the model identification, a rheology model was proposed. Based on the measured convergence displacement and vault settlement,physical parameters such as elastic modules and creep coefficients were obtained by viscoelasticity incremental back analysis with adaptive genetic algorithm, which were used to predict deformation of surrounding rock. Research results show that mechanical property of surrounding rock can be simulated reasonably with viscoelasticity increment at back analysis with staged construction to predict deformation, which is very important to tunnel construction.
