碎石类土极限承载力标准值表的研究

以可靠度理论为基础的极限状态设计法是当今世界工程设计领域的发展趋势,地基基础要应用可靠度理论进行设计是一大难点,而地基极限承栽力标准值的确定是最重要的方面。利用原制订基本承载力时的荷载试验资料,再补充收集了一部分新资料,重新提出极限承载力,找出极限承栽力与基本承载力的关系值K(安全系数),将K值乘以基本承载力表,并以公式计算值及林业部标准进行比较。综合得出极限承载力范围值表,在此基础上进行概率分析,得出极限承载力标准值。通过直接或间接的方法求得极限承载力标准值变异系数。

RESEARCH OF STANDARD VALUE TABLE FOR DEBRIS SOIL ULTIMATE BEARING CAPACITY

Nowadays the ultimate state design method based on the confidence level theories is the trend of engineering design realm in world. It is a big difficult to use the ultimate state design theories for design foundation. But it is the most important aspect to ensure the standard of foundation ultimate bearing capacity during design. This paper make use of the loading test data for original establish basic bearing capacity, and supplement account of new data, then re-determinate the ultimate bearing capacity, find out the relation value K (safety factor) between ultimate bearing capacity and basic bearing capacity. The value K is multiplied by the basic bearing capacity table, comparing with standard value table of forestry department, then synthetical educe to the range value table of ultimate bearing capacity. By the probability analysis based on the studies above all, the standard of ultimate bearing capacity is educed. We can seek the ultimate bearing capacity standard coefficient of variability by direct or indirect method.