After that , the multifractal spectra dq - q are computed by fixed - mass method . the results show that in the studied scaling range different types of landscapes and profiles in different directions perform different fractal properties , that is , the d value and crossover length ^ decrease in turns with the landform type from high - moutain , mid - low mountain to basin , and the profile parallel to wear grooves often has lower d values ( < 1 . 5 ) than those perpendicular to wear grooves do ( 1 . 5 ) in the same section 提出以地貌分形特点和渡越长度为依据的地貌层次界定方案，研究指出了5km左右应为宏观临界点：不同构造地貌区、不同取向的剖线的多重分形谱值域范围宽窄表现出中低山区高山区盆地区，垂直构造地貌斜坡方向斜交方向平行方向的特点，表明了内外营力作用的不均匀性和方向性。
Vibration characteristics test was carried on a model of one three - spanned prestressed concrete ( pc ) shew continuous box girders , which was designed in jing hu high speed railway of china . we discuss the difference between the results of test and 3d fem analysis with two cases of orthogonality and shew , and explore the dynamic properties of skew box girders 通过对我国京沪高速铁路设计中的一座三跨预应力混凝土斜交箱形连续梁桥缩尺模型自振特性参数的测试，比较了正交、斜交箱梁的固有频率的差异，通过与空间结构分析结果的对比，最后讨论了斜交箱梁的动力性能。
The main crack of tiaohu formation are straight oblique - cracks and level crack , there are many scores in the crack . the length of cracks is long , and they cut across several layers . the average surface density of the cracks is 0 . 101 slips / m . the cracks in lucaogou formation is mostly net cracks , and there are solution on crack surface 条湖组的裂缝多为平直的斜交缝和水平缝，缝面多见擦痕，延伸长度大，切穿多套地层，裂缝面密度平均为0 . 101条米；芦草沟组裂缝多为网状裂缝，缝面有溶蚀现象，多存在于碳酸盐岩内，裂缝面密度平均为0 . 143条米。
Abstract : vibration characteristics test was carried on a model of one three - spanned prestressed concrete ( pc ) shew continuous box girders , which was designed in jing hu high speed railway of china . we discuss the difference between the results of test and 3d fem analysis with two cases of orthogonality and shew , and explore the dynamic properties of skew box girders 文摘:通过对我国京沪高速铁路设计中的一座三跨预应力混凝土斜交箱形连续梁桥缩尺模型自振特性参数的测试，比较了正交、斜交箱梁的固有频率的差异，通过与空间结构分析结果的对比，最后讨论了斜交箱梁的动力性能。
