| 桥台地基附加竖向压应力通用计算公式 |
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| 引用本文： | 杨奇,冷伍明,邓宗伟,聂如松.桥台地基附加竖向压应力通用计算公式[J].岩土力学,2008,29(3):833-837. |
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| 作者姓名： | 杨奇 冷伍明 邓宗伟 聂如松 |
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| 作者单位： | 中南大学,土木建筑学院,长沙,410075 |
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| 基金项目： | 铁道部科技研究开发计划 |
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| 摘 要： | 台后路堤及锥体将在桥台地基中产生附加竖向压应力,它是桥台设计中计算桥台不均匀沉降、桥台前移、桥台桩基侧压力和挠度的关键参数.根据有关力学原理,推导了任一宽度台后路基及锥体引起桥台地基附加竖向压应力的计算公式,解决了现有规范中计算桥台基底附加竖向压力方法只适用于单线铁路路基和查表内插易产生误差的缺点,并易于利用计算机编制程序进行计算.
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| 关 键 词： | 桥台 路堤 锥坡 地基 附加竖向压应力 桥台地基 竖向压应力 通用计算公式 slope embankment bridge stress vertical calculation formula 计算机编制程序 利用 误差 铁路路基 单线 压力方法 基底 规范 宽度 力学原理 关键参数 |
| 文章编号： | 1000-7598-(2008)03-0833-05 |
| 收稿时间： | 2006-08-07 |
| 修稿时间： | 2006年8月7日 |
Universal calculation formula of additional vertical stress under bridge abutment due to embankment and conical slope |
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| YANG-Qi,LENG Wu-ming,DENG Zong-wei,NIE Ru-song.Universal calculation formula of additional vertical stress under bridge abutment due to embankment and conical slope[J].Rock and Soil Mechanics,2008,29(3):833-837. |
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| Authors: | YANG-Qi LENG Wu-ming DENG Zong-wei NIE Ru-song |
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| Institution: | School of Civil and Architectural Engineering, Central South University, Changsha 410075, China |
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| Abstract: | The embankment on the back of bridge abutment and the conical slope produce additional vertical stress in the bridge abutment subsoil; the stress is the key parameter to calculate the differential settlement, lateral movement of the bridge abutment, the lateral pressure and flexibility of the abutment’s pile foundation. Based on the elastic theory formula and the superposition principle, the calculation formulas of the stress are deduced so as to solve the problem of the existing code only applicable to single-track roadbed and error due to looking up table together with interpolation. In addition, the formula is apt to make a computing program. |
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| Keywords: | bridge abutment embankment conical slope subsoil additional vertical stress |
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