淮北平原新近沉积层承载力评价标准验证性分析与可靠性研究

为了验证和完善淮北平原新近沉积层承载力评价标准,选取该地区粉质土、砂性土和成层地基等极具代表性的场地,系统地进行验证性试验研究。开展了平板载荷试验,以获得地基承载力直接性指标,并同步进行静力触探、动态平板载荷试验,得到不同地质条件下地基土的力学特征。通过测试结果的对比分析,表明承载力评价体系合理、高效,经验公式准确、可靠。该评价标准适宜作为淮北平原新近沉积层地基承载力评价的理论依据。

Confirmatory analysis and reliability research on evaluation standard of bearing capacity for recently sedimentary layer in Huaibei plain

In order to verify and improve the evaluation standard of bearing capacity for recently sedimentary layer in Huaibei plain, some representative sites are selected, such as silt, sandy soil and stratiform foundation. Confirmatory tests are carried out by the numbers. Direct index of bearing capacity of foundation is realized in the flat load test. Cone penetration test and dynamic plate loading test are carried out synchronously to get mechanics characteristics of foundation soil in different geological conditions. Through the contrastive analysis of the test results, it shows that the evaluation system for bearing capacity is reasonable and effective, experience formulas are accurate and reliable, and the evaluation standards appropriate for the theory basis of bearing capacity evaluation for recently sedimentary layer in Huaibei plain.