【摘要】：TBM（Tunnel Boring Machine）即隧道掘進機，是利用回轉刀具破碎巖石，從而形成隧道斷面的一種先進的隧道施工機械。作為盾構機的關鍵部件之一，刀盤系統(tǒng)主要起到開挖巖體、穩(wěn)定工作面的功能。刀盤系統(tǒng)的工作性能直接影響到盾構施工的效率。本文基于ADAMS對TBM刀盤系統(tǒng)的破巖過程進行剛柔耦合動力學仿真分析，研究刀盤系統(tǒng)的載荷與動力特性，為盾構的安全、低振、平穩(wěn)運行提供理論依據。本文主要對以下幾個方面的內容進行了研究。 （1）為了研究TBM刀盤系統(tǒng)在破巖掘進過程中的動力學行為，將掌子面設計成具有凹槽和凸齒的形狀。利用UG建立刀盤系統(tǒng)和不同齒高的掌子面剛性模型,并將裝配后的模型導入ADAMS中進行仿真計算，得出了刀盤上各個滾刀的接觸力和加速度變化曲線，并對不同破巖深度時的載荷和加速度變化情況進行了比較研究。結果表明，巖塊剝落的厚度會影響刀盤系統(tǒng)運行的平穩(wěn)性。當巖塊剝落厚度在8~12毫米變化時，厚度在9mm時刀盤系統(tǒng)的運行最為平穩(wěn)。 （2）為深入研究巖石柔性對刀盤系統(tǒng)動力學響應的影響，將平坦掌子面模型使用ANSYS柔性化，，再將刀盤系統(tǒng)剛性模型和柔性掌子面模型導入ADAMS中進行仿真計算,得到了刀盤上各個滾刀的接觸力及其幅值變化曲線。結果顯示，考慮上巖石的柔性以后，刀盤系統(tǒng)的運行更加平穩(wěn)。 （3）為研究柔性巖石的剝落對滾刀動力學行為的影響，將帶有凸齒的掌子面與單個剛性滾刀模型導入ADAMS并進行仿真計算，得到了滾刀與掌子面的接觸力變化規(guī)律，并分析了巖石性質對滾刀載荷的影響。 （4）為了研究刀盤系統(tǒng)的柔性性質對刀盤動力性能的影響，將柔性的刀盤系統(tǒng)模型與凸齒高度h=9mm的剛性掌子面模型在ADAMS中進行動力學仿真計算，得到了刀盤上各個滾刀與掌子面的接觸力變化情況，并與柔性掌子面的相應結果進行了比較分析。
[Abstract]:TBM (Tunnel Boring Machine) (Tunnel tunneling Machine) is an advanced tunnel construction machine which uses rotary tool to break rock and form tunnel section. As one of the key components of shield machine, the cutter head system mainly plays the function of excavating rock mass and stabilizing working face. The working performance of the cutter head system directly affects the efficiency of shield construction. In this paper, the rigid-flexible coupling dynamic simulation of TBM cutter head system is carried out based on ADAMS, and the load and dynamic characteristics of the cutter head system are studied, which provides a theoretical basis for the safe, low vibration and smooth operation of shield machine. In this paper, the following aspects are studied. (1) in order to study the dynamic behavior of TBM cutter head system in the process of rock breaking excavation, the face of the palm is designed to have the shape of groove and protruding teeth. UG is used to establish the rigid model of the cutter head system and the palm face with different tooth height, and the model after assembly is imported into ADAMS for simulation and calculation. The contact force and acceleration curves of each hob on the cutter head are obtained, and the change curves of the contact force and acceleration of each hob on the cutter head are obtained. The variation of load and acceleration at different rock breaking depth is compared. The results show that the flaking thickness of the rock block will affect the stability of the cutter head system. When the thickness of rock flaking is 812 mm, the operation of the cutter head system is most stable when the thickness is at 9mm. (2) in order to deeply study the influence of rock flexibility on the dynamic response of the cutter plate system, the flat palm surface model is made with ANSYS flexibility. Then the rigid model of cutter head system and the flexible palm surface model are introduced into ADAMS for simulation and calculation, and the contact force and amplitude change curve of each hob on the cutter head are obtained. The results show that considering the flexibility of rock, the operation of cutter head system is more stable. (3) in order to study the influence of flaking of flexible rock on the dynamic behavior of hob, The model of the face with convex teeth and a single rigid hob are imported into ADAMS and simulated, and the law of the contact force between the hob and the face of the hand is obtained. The influence of rock properties on the load of hob is analyzed. (4) in order to study the influence of flexible character of cutter head system on the dynamic performance of cutter head, The dynamic simulation of the flexible cutter head system model and the rigid palm surface model of h=9mm with convex tooth height is carried out in ADAMS, and the change of the contact force between each hob and the palm surface on the cutter head is obtained. The results are compared with the corresponding results of the flexible palm surface.
【學位授予單位】：河北工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U455.31

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