Mechanical Characteristics and Bearing Capacity of Calcerinaite sediments

对钙质沉积物进行了一系列的实验和分析研究，以了解黏结程度对其力学行为的影响，并评估其对地基的承载能力。首先通过单颗粒破碎试验对煅烧颗粒进行强度测试，了解其抗拉强度。试验是通过在平板之间进行等速压缩进行的。采用二次劈裂试验研究了具有粘结的颗粒材料的抗拉强度。在此测试中，测试了玻璃球和二氧化硅颗粒，以了解颗粒和粘合材料的抗拉强度对装配机械行为的影响。在此基础上，建立了钙质沉积物的本构模型。最后用有限元程序对所建立的模型进行了介绍。对钙质沉积物的承载力，特别是波浪荷载对海洋结构物性能的影响，可以进行一些分析研究。

A series of experimental and analytical study has been carried out for calcareous sediment in order to understand the effect of the magnitude of bonding on the mechanical behaviour and to evaluate the bearing capacity for the groung. Firstly the strength of calerious particle was tested by single particle crushing test in order to know the tensile strength. The tests were carried out by compressing between flat platens under a constant speed. Secondary split tests were conducted to investigate the tenslie strength for granular materials with bonding. In this tests the glass ballotini and silica particle were tested to understand the effects of tesile strength for grains and the bonded material on the mechanical behaviour for the assembly. Thirdly a constitutive mofel for calcerious sediment was developed based on the knowledgement of the above result. Finally the model developed was introduced a finite element code. Some analytical work can be conducted to investigate the baring capacity of calcerioue sedimen, especially the effects of wave loading on the behaviour for marine structure.