| 加筋地基的极限分析 |
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| 引用本文： | 王钊,王协群.加筋地基的极限分析[J].清华大学学报(自然科学版),2001,41(6):112-114. |
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| 作者姓名： | 王钊 王协群 |
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| 作者单位： | 1. 武汉大学土木与建筑学院,
2. 武汉理工大学, |
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| 摘 要： | 分析了筋材对加筋地基承载力的贡献 ,它包括筋材拉力向上分力的张力膜作用和水平分力的侧向限制作用。运用极限平衡原理推导出加筋地基极限承载力的计算公式 ,计算结果与已发表的典型模型试验结果相比 ,基本一致。从筋材抗拔出极限状态分析推导出筋材长度的计算公式。公式中筋材的拉力取极限抗拉强度 ,将极限承载力除以安全系数得容许承载力 ,而筋材长度的公式中已包含了抗拔出安全系数
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| 关 键 词： | 地基 加筋 极限分析 |
| 文章编号： | 1000-0054（2001）06-0112-03 |
| 修稿时间： | 2000年4月25日 |
Limit analysis for reinforced foundations |
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| WANG Zhao ,WANG Xiequn.Limit analysis for reinforced foundations[J].Journal of Tsinghua University(Science and Technology),2001,41(6):112-114. |
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| Authors: | WANG Zhao WANG Xiequn |
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| Institution: | WANG Zhao 1,WANG Xiequn 2 |
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| Abstract: | The effects of reinforcement on bearing capacity of reinforced foundations include the tensile membrane strength of vertical components and the lateral restraints of horizontal components. The limit equilibrium principle was used to derive formula for the ultimate bearing capacity. The results agree well with previous results from two typical tests. Formula are given for the length of the reinforced foundation based on the limit analysis. The tensile force of the reinforcing bars in the formulas is equal to the ultimate tensile strength. A factor of safety is applied to the ultimate bearing capacity to determine the allowable bearing capacity. The factor of safety against the reinforcing bars pulling out has already been included in the length formula. |
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| Keywords: | foundation reinforcement limit analysis |
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