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在地质力学上以扭转变形为主的构造型式称旋扭构造,有涡轮状、帚状、莲花状构造等等。下面就此有关的内容讨论三个问题。 (一) 旋扭状构造的力学成因旋扭状构造是怎么形成的,也就是它是在什么样的应力场的作用下的产物?首先可从讨论无限平板在集中力偶作用下的应力分布着手。可通过一个简单薄膜的模拟实验来进行观察(图1)。当薄膜很大,力偶矩M作用范围不大的情况下,只在集中力偶附近产生涡轮褶皱,远离集中力偶作用处,看不出什么影响。由此可
Geomechanics in the main torsional deformation of the structure called the twist structure, there are turbo-shaped, broom-like, lotus-shaped structure and so on. The following discussion of the three issues related to this. (A) The mechanics of the twist-like structure The formation of the twist-like structure is the product of what kind of stress field it is acting on. First, we discuss the stress distribution of an infinite flat plate under concentrated force coupling . Observation can be done through a simple film simulation (Figure 1). When the film is large, the moment of force M is not the role of the scope of the case, only in the vicinity of the concentration of force generated turbulence fold, away from the role of concentrated even couple, do not see any impact. From this can