Challenges in Geotechnical Reliability Based Design
Challenges in Geotechnical Reliability Based Design
复制标题
基于岩土可靠性设计的挑战
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Y. Honjo
中科院分区：
文献类型：
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作者：
Y. Honjo
作者提出了一个基于可靠性的设计（RBD）方案，实践岩土工程师。提出的方案的本质是分离的岩土RBD的岩土设计部分的不确定性分析部分。通过这种方式，与传统的RBD程序相比，实际的工程师能够以更舒适的方式执行RBD。本文介绍了RBD在某些结构上的结果，以突出岩土RBD的特点。根据研究结果，对岩土RBD面临的主要问题进行了讨论。因此，土壤性质的空间变异性只是不确定性的来源之一。在许多设计问题中，由实测参数（如标准贯入试验N值）估算土体参数（如摩擦角）所产生的统计估算误差、设计计算模型误差和转换误差具有较高的不确定性。认识到这些方面对于将岩土RBD发展到下一个和更高的阶段非常重要。f f
The author has been proposing a reliability based design (RBD) scheme for practicing geotechnical engineers. The essence of the proposed scheme is the separation of the geotechnical design part rom the uncertainty analysis part in geotechnical RBD. In this way, practical engineers are able to perorm RBD in a more comfortable way compared to the traditional RBD procedure. Results of RBD on some structures are presented in this paper to highlight the characteristics of the geotechnical RBD. Based n the results, some discussions are made to identify the major issues geotechnical RBD is facing. It is concluded that spatial variability of soil properties is only one of the sources of uncertainty. In many deign problems, statistical estimation error, design calculation model error and transformation error associated with estimating soil parameters (e.g. friction angle) from the measured quantities (e.g. SPT N-values) ave higher uncertainty. It is important to recognize these aspects in developing the geotechnical RBD to e next and the higher stage. f f