Drill and blast method of tunnel excavation on hard rock 硬巖地鐵隧道鉆爆法開挖結(jié)合盾構(gòu)法襯砌的施工技術(shù)
Gprs 900 1800mhz tdma digital cellular mobile communication network gprs general packet radio service test methods of tunnelling protocol 900 1800mhz tdma數(shù)字蜂窩移動通信網(wǎng)通用分組無線業(yè)務(wù)
Moreover , the method of tunnel construction monitor is put up , which has a significant guide to the tunnel construction 指出隨道施工監(jiān)測對于隧道施工質(zhì)量的提高和運營安全有著重要的指導(dǎo)意義。
The theory and its calculated methods of tunnel section design is researched in this paper , including the foundation and methods of the choice of profile and line types , and value and distribution of load , and the common calculated methods of lining structure 研究了水工隧洞斷面設(shè)計的理論及其計算方法,包括斷面選型和襯砌型式選擇的依據(jù)和方法,荷載的取值和分布,襯砌結(jié)構(gòu)常用計算方法的研究。
In this paper we dissertate the common structure cross forms and excavating methods of highway double - arc tunnel home and abroad at the first part , and study common simulation methods of tunnel construction afterwards . based on the method of reversing and releasing the stress , and combined with the capacity of simulating continuous construction of ansys programme , we come up with the thought of using the method of applying virtual support force to release the stress step by step to realize the step - by - step release of initial stress during the tunnel construction simulation . with the help of design language of ansys , we develop a command to apply the virtual support force 探討了應(yīng)用平面應(yīng)變模型進行隧道施工過程模擬的常用方法,在“反轉(zhuǎn)應(yīng)力釋放法”的基礎(chǔ)上,結(jié)合ansys軟件可以模擬連續(xù)施工的特點,提出利用“施加虛擬支撐力逐步釋放法”來實現(xiàn)隧道施工過程中地應(yīng)力隨工序的逐步釋放的思路,并且利用ansys的apdl設(shè)計語言,開發(fā)出施加虛擬支撐力的命令,實現(xiàn)了施工過程中應(yīng)力的逐步釋放,從而找到了一種模擬隧道施工過程的好方法。