| 水平荷载作用下考虑轴向力的桩间动力相互作用因子 |
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| 引用本文： | 蒋建国,周绪红,邹银生.水平荷载作用下考虑轴向力的桩间动力相互作用因子[J].中国公路学报,2003,16(3):40-43,47. |
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| 作者姓名： | 蒋建国 周绪红 邹银生 |
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| 作者单位： | 1. 湖南大学,土木工程学院,湖南,长沙,410082
2. 长安大学,建筑工程学院,陕西,西安,710064 |
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| 基金项目： | 国家自然科学基金项目(50078021) |
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| 摘 要： | 在前人工作的基础上,考虑水平荷载作用下桩受轴向力作用,采用动力WINKLER地基模型,利用梁的动力微分方程,求解桩间动力相互作用因子的简化计算方法。通过分析表明,在轴向力作用较大的情况下,动力相互作用因子所受的影响较为明显,将对动力反应峰值产生影响。在将所得结果与前人工作结果比较的基础上,提出考虑轴向力作用时的影响因素为桩土之间的弹性模量之比、无量纲频率及桩距等,同时指出各影响因素的影响程度。
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| 关 键 词： | 桥梁工程 群桩 动力WINKLER地基模型 动力相互作用因子 |
| 文章编号： | 1001-7372(2003)03-0040-04 |
Dynamic interaction factor with axial load under lateral load |
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| Abstract: | Based on the beam dynamic differential equation and dynamic WINKLER foundation model, the simplified computation of group pile dynamic interaction factor with axial load under lateral load is analyzed followed with former work in this paper. And the large axial load has obvious affection on dynamic interaction factor of group pile from the analysis under special situation; it would change the dynamic peak response. The affected elements are analyzed according to contrast with former result, which mainly are dimensionless frequency, the elastic modulus ratio of pile and soil, and the distance of two piles etc, the degree of influence is also examined. |
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| Keywords: | bridge engineering group pile dynamic WINKLER foundation model dynamic interaction factor |
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