Secondly, in view of the limitation and shortage of traditional simulation of finite element approaches for bolt, a new composite grouted bolt element including nonlinear contacting relation will be built based on the above study of the mechanics mechanism of fully grouted bolt. then, an elastic - plastic finite element program will be developed for the analyses of tunnel stability, in which the composite grouted bolt element and nonlinear finite element analysis method will be used ; the patterns and the affect of main design parameters on the support effect of bolt will be analysed using the program, and conclusions of guidance importance for tunnel support design will be drawn. finally, simulation compution for the excavation and support of a highway tunnel will be made out using the above production, and the method of application of the program will be discussed ; analysis of the deformation, stress and distribution of plastic range will be done, and rational support plan will be worked out, which is of guidance importance for tunnel support design and the thery and technique of fully grouted bolt used in tunneling will be perfected further
首先,本文在綜合分析隧道穩定性影響因素及失穩破壞模式的基礎上,對全長粘結式
砂漿
錨桿作用力學機理進行了深入研究,為全長粘結式
砂漿
錨桿的有限元模擬分析奠定了基礎;其次,針對傳統
錨桿有限元模擬方法的局限性與不足,在上述全長粘結式
砂漿
錨桿作用力學機理研究基礎上,建立出能反映界面非線性粘結的新型復合
砂漿
錨桿有限單元模型;然後,運用上述復合
砂漿
錨桿單元模型,引進非線性有限元分析手段,開發了隧道支護穩定性分析的有限元程序,並就全長粘結式
砂漿
錨桿的型式與設計參數對支護效果的影響進行了深入探討,得到了對隧道支護設計具有指導意義的結論;最後,運用本文研究成果對某公路隧道工程實例進行了開挖與支護的模擬計算,探討了其應用方法,並就隧道變形與應力及塑性區分佈規律進行了分析,從而提出了合理的支護方案,為隧道支護設計提供了參考依據,完善了隧道全長粘結式
砂漿
錨桿支護的理論與方法。
The author conduct a series of research work including the supporting system design, construction, monitoring and mixture ratio tests of mortar for anchoring in this research. some research results of applicable value in engineering are presented also
在本文的研究中,作者根據工程的自身特點對廈門市美仁宮大廈基坑圍護工程的設計、施工、監測及
錨固
砂漿進行了一系列的研究工作,並得出了一些具有工程適用價值的成果。
Toshinori, s. and tadatsugu, t., “ scale effect of a shallow circular anchor in dense sand. ” soils and foundation, vol. 38, no. 2, pp. 93 - 99, 1999
許世宗和廖洪鈞,
砂土中多段
錨碇承壓式地
錨之
錨碇行為,中國土木水利工程學刊,第十二卷,第一期,第91 - 100頁, 2000 。
Durability ' s of the material such as permeability, heat - resistance, carbonation and steel bar - protection were tested. the bonding characters between anchoring material matrix and post - embedding steel bar, the matrix and the concrete structures were studied
在植筋
錨固長度足夠的條件下,混凝土與
錨固
砂漿的界面粘結強度大小直接決定了植筋
錨固的控制荷載,粘結界面成為受力的薄弱環節。
Su, s. f. and liao, h. j. " influence of strength anisotropy on piezocone resistance in clay ", journal of geotechnical and geoenvironmental engineering, asce, vol. 128, no. 2, pp. 166 - 173 ( 2002 ) ( sci )
許世宗和廖洪鈞,沉泥質
砂土中錐形擴座地
錨之
錨碇行為,中國土木水利工程學刊,第14卷,第三期,第393 - 404頁( 2002 ) 。
Su, s. f. and liao, h. j. “ influence of strength anisotropy on piezocone resistance in clay ”, journal of geotechnical and geoenvironmental engineering, asce, vol. 128, no. 2, pp. 166 - 173 ( 2002 ) ( sci )
許世宗和廖洪鈞,沉泥質
砂土中錐形擴座地
錨之
錨碇行為,中國土木水利工程學刊,第14卷,第三期,第393 ? 404頁( 2002 ) 。
The analysis shows that the depths of the major and auxiliary anchor rods are affected by the cement mortar and its bond strength with the rock body and not affected by the gradient and the height of the rock side slope
並得到如下結論:主次描桿的
錨固深度只受水泥
砂漿與巖體的結合強度的影響,不受邊坡坡度和高度的限制。
Su, w. and fragaszy, r. j. ( 1988 ). “ uplift testing of model anchors. ” journal of geotechnical engineering division, asce, vol. 114, no. 9, pp. 961 ~ 983
廖洪鈞、陳珍貴和張光甫( 1993 ) ,緊密砂土中地錨間距對擴座地錨錨碇行為影響之研究,中國土木水利工程學刊,第五卷,第一期,第45 ~ 55頁。