钙质砂是一种易破碎粒状材料。
Calcareous sand is a kind of easily crushed granular materials.
最后，分析了钙质砂的循环活动性机理。
实践证明，颗粒破碎是影响钙质砂力学性质的主要因素。
It is demonstrated that the particle crushing is a main factor affecting the property of calcareous sand.
结果表明，主应力方向的连续旋转导致了钙质砂中孔隙水压力的增长。
It was showed that the continuous rotation of principal stress induced the development of pore water pressure in carbonate sand.
钙质砂是一种海洋生物成因的特殊岩土介质，在钙质砂地基中的桩基工程又很常见。
Calcareous sand is a cause of special Marine geotechnical medium, pile foundation works are not uncommon in the calcareous sand.
根据重塑和原状钙质砂压缩特性的不同，提出颗粒破碎会引起原状钙质砂的附加孔隙比增量。
Based on the different compression behaviors of natural and reconstituted calcareous sand, it is presented that the additional void ratio can cause particle breakage of natural calcareous sand.
根据试验目的和要求，设计研制了颗粒强度测试装置，并对不同粒径的钙质砂颗粒强度进行了测试。
The testing device of individual particle strength was designed and individual calcareous sand particles with various sizes were tested.
利用人工钙质砂和三轴剪切试验手段，就颗粒破碎及其对钙质砂变形和强度特性的影响进行分析研究。
The influence of particle breakage on deformation and strength properties of calcareous sands was investigated using artificial calcareous sands and triaxial testing.
基于此，本文对钙质砂颗粒及其内孔隙做了一系列试验研究，主要工作包括：1、确定内孔隙试验方法。
The main work can be concluded as follows:1, Experimental method of the inner pore is found.
针对低应力水平下钙质砂的颗粒破碎现象具有特殊性，分析了围压对钙质土颗粒破碎的影响，揭示其变形过程的力学机制；
Granule failure of calcareous sand is very special at low stress level. The effect of confining pressure on granule farlure is analyzed and its deformation mechanism discussed.
结果表明，颗粒破碎程度与对其输入的塑性功密切相关；颗粒破碎的发生使钙质砂剪胀性减小，体积收缩应变增大，峰值强度降低。
The results indicate that particle breakage depends on the sample′s plastic work received during testing, and reduces the volume expansion and peak strength of the sands.
结果表明，颗粒破碎程度与对其输入的塑性功密切相关；颗粒破碎的发生使钙质砂剪胀性减小，体积收缩应变增大，峰值强度降低。
The results indicate that particle breakage depends on the sample′s plastic work received during testing, and reduces the volume expansion and peak strength of the sands.
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