分析了刚性承台下群桩桩数、桩长、桩间距和桩土模量比等群桩工作特性的影响。
The influences of number of piles, the pile length, the space between piles, and the pile-soil relative stiffness factor on the characteristic of pile groups were analyzed in a systematic way.
初步确定了半刚性材料的动态模量的试验方法。
The testing method of dynamic modulus for semi-rigid materials is submitted initiatively.
当短桩为高模量刚性桩时采用调整长桩弹性模量的方法来调节桩土的荷载分担的效果要比短桩为低模量柔性桩时稍佳。
When the elastic modulus of the short-pile is bigger, adapting the elastic modulus of the long-pile to adjust load share is better than that when the elastic modulus of the short-pile is smaller.
半刚性基层材料的强度与模量随龄期增长，基层弯沉值也随着龄期变化。
The strength and modulus of semi-rigid base material increase with age, so the reflection of base varies with age too.
用增韧母料对聚丙烯进行共混改性，同时加入适量降温母料，提高材料的流动性能，添加多种无机和有机增强剂，提高体系的刚性和模量。
Polypropylene was modified with the toughened master batch. At the same time, the appropriate toughened master batch was added to increase the flowing property of the system.
用刚性圆形承压板法进行岩体变形试验，建立了岩体纵波波速与变形模量的拟合关系，用最小二乘回归法处理变形数据。
Then the fitting relationships between the longitudinal wave velocity of rock masses and deformation moduli are established. Method of least square regression is used for deformation data processing.
用刚性圆形承压板法进行岩体变形试验，建立了岩体纵波波速与变形模量的拟合关系，用最小二乘回归法处理变形数据。
Then the fitting relationships between the longitudinal wave velocity of rock masses and deformation moduli are established. Method of least square regression is used for deformation data processing.
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