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| 水平荷载作用下根式基础受力特性分析 | |
| 引用本文： | 木林隆,黄茂松,龚维明,殷永高.水平荷载作用下根式基础受力特性分析[J].岩土力学,2010,31(1):287-292. |
| 作者姓名： | 木林隆 黄茂松 龚维明 殷永高 |
| 作者单位： | 1. 同济大学,岩土及地下工程教育部重点实验室,上海,200092;同济大学,地下建筑与工程系,上海,200092 2. 东南大学,土木工程学院,南京,210096 3. 安徽省高速公路总公司,合肥,230051 |
| 摘 要： | 根式基础是一种新型的结构式基础,利用自身的结构性,可以在增加少量成本的情况下大幅度提高基础的承载力。但是,目前还没有关于根式基础的理论研究成果,有必要对根式基础的受力特性进行分析。采用弹塑性有限元法,对淮河特大桥1#桥的根式基础原位试验进行数值模拟,验证了数值模拟方法和参数选取的合理性。在此基础上,通过无根键沉井基础和有根键沉井基础的受力特性对比,分析了根式基础的受力特性,对根键上的弯矩分布型式进行了研究,并探讨了根键沿深度位置分布对根式基础承载力的影响。研究证明,根键分布在合理的位置可以有效地提高沉井基础的水平承载力。 |
| 关 键 词： | 有限元法 根式基础 水平荷载 受力特性 |
| 收稿时间： | 2009-01-04 |
Response analysis of anchorage foundation under lateral loading |
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| MU Lin-long,HUANG Mao-song,GONG Wei-ming,YIN Yong-gao.Response analysis of anchorage foundation under lateral loading[J].Rock and Soil Mechanics,2010,31(1):287-292. | |
| Authors: | MU Lin-long HUANG Mao-song GONG Wei-ming YIN Yong-gao |
| Institution: | 1. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 3. School of Civil Engineering, Southeast University, Nanjing 210096, China; 4. Anhui Expressway Holding Corporation, Hefei 230051, China |
| Abstract: | Anchorage foundation is a new structural foundation which can effectively improve its bearing capacity by increasing a small amount of material that due to the designability of itself. It is necessary to analyze the mechanical behavior of anchorage foundation due to the shortage of corresponding theoretical research. In-situ tests of an anchorage foundation of Huaihe Super Bridge are simulated by elastoplastic finite element method to demonstrate the effectiveness of numerical simulations and suitable selection of material parameters. The mechanical behaviour of anchorage foundations is then further studied by comparing that of a caisson without anchors. Meanwhile, the distribution of moment on anchor is analyzed; and the influence of anchors’ embedded depth on the bearing capacity is studied. The results show that the lateral bearing capacity of anchorage foundations can be effectively improved by a proper setting of anchors. |
| Keywords: | finite element method anchorage foundation lateral loading mechanical behaviour |
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