The test results indicated that : crack similitude of reinforced concrete simple beams is not equal to model scale under the working load ; when the amount and surface shape of reinforcing bar are same , the similitude of crack width , crack amount and crack spacing of reinforced concrete simple beams of different scales are all nearly equal to the square root of model scale ; when the amount and surface shape of reinforcing bar are different , the similitude of crack amount and crack spacing are still nearly equal to , whereas the crack width is not only approximately proportional to , but the influence of the amount and surface shape of reinforcing bar on crack width should be considered also at the same time 试验结果表明：在使用荷载下，钢筋混凝土简支梁的裂缝相似率并不等于几何相似比；当钢筋根数及形式相同时，不同模型比尺下的钢筋混凝土简支梁的裂缝宽度、裂缝条数及裂缝间距的相似率，均约等于模型几何相似比的平方根；当钢筋根数及形式不同时，裂缝条数及裂缝间距的相似率仍然约等于，而裂缝宽度的相似率近似与成正比，但应同时考虑钢筋根数与钢筋表面形状对裂缝宽度相似率的影响。
Moreover , the current development status of sedimentation simulation research in china was demonstrated and five big trends for the future development of sedimentation simulation technologies were analyzed . the geometric similitude , kinematic similitude and kinetic similitude between the lab model and the prototype for sedimentation simulation form the basis of three similitude principles , while three similitude rules , i . e . , the suspension similitude rule , the particle movement similitude rule and the riverway distortion similitude rule can be deduced from the three similitude principles , and thee principles and rules are the basic theories for the development of physical simulation about the clastic sedimentation processes 沉积模拟实验模型及原型的几何相似、运动相似、动力相似及其由上述三个相似性原理导出的悬浮相似、颗粒运动相似及河道变形相似等三个相似准则是开展碎屑沉积过程物理模拟的基本原理；在此基础上，论述了碎屑沉积模拟研究的主要方法?自然模型法和比尺模型法；提出了开展碎屑沉积过程物理模拟的主要方法步骤，这是本论文第二章的主要内容。
Through developing the comprehensive experiment device with large - scale drum strength and stability , the stress - measuring experiments of various wall thickness of the normal drums of the cranes were performed . the law that the stress of the drums along the circumference and along the axis changes with the load increase of the wire ropes was studies for the first time 通过研制全比尺大型卷筒强度、稳定性综合试验装置，对起重机常用规格的卷筒进行了各种壁厚条件下的应力测量试验，首次对卷筒体周向和轴向应力随钢丝绳逐步加载过程变化的规律进行了研究，发现最大应力产生在钢丝绳绕过后3 ~ 5圈截面处，该现象与理论分析结果也是符合的。
Time , the paper studies rheology of rockfillwith yin zongze model , of two yield surface and rheological relation of negative exponential , and some formulas are obtained it is difficult to determine the rheological parameters , of rock fills through laboratory test for the limited specimen , dimension , short duration and particle , constituents 本文采用殷宗泽双屈服面模型与堆石流变的负指数变化关系式，研究堆石的应力与流变关系，并推导了相应公式。在流变参数确定方面，由于室内试验的试样尺寸、时间比尺和颗粒破碎很难模拟现场条件，根据室内试验直接确定堆石的流变参数是困难的。
