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| 预应力锚固抗滑桩内力计算有限差分法研究 | |
| 引用本文： | 戴自航,沈蒲生,彭振斌.预应力锚固抗滑桩内力计算有限差分法研究[J].岩石力学与工程学报,2003,22(3):407-413. |
| 作者姓名： | 戴自航 沈蒲生 彭振斌 |
| 作者单位： | 1. 福州大学环境与资源工程系,福州,350002;湖南大学土木工程学院,长沙,410082 2. 湖南大学土木工程学院,长沙,410082 3. 中南大学环境资源与建筑工程学院,长沙,410083 |
| 基金项目： | 湖南省自然科学基金(02JJY2010)资助项目 |
| 摘 要： | 指出目前现有预应力锚固抗滑桩内力计算方法的缺陷。基于普通抗滑桩内力计算的地基系数法原理，提出了计算预应力锚固抗滑桩全桩内力的有限差分法，详细推导了有关的计算公式。编写了计算和图形处理程序，可对全桩进行整体分析，无需象现有方法那样，将桩分为滑动面上、下两部分分别考虑。引用工程实例，将预应力锚固抗滑桩与普通抗滑桩进行了比较，不但从理论上揭示了预应力锚固抗滑桩的优越性，而且表明有限差分法计算速度快、精度高，可对桩的各种工况进行数值模拟，不失为分析预应力锚固抗滑桩内力的一种简便而适用的方法。对该工程的监测表明，计算结果令人满意。 |
| 关 键 词： | 预应力 锚固 抗滑桩 内力 计算 有限差分法 |
| 文章编号： | 1000-6915(2003)03-0407-07 |
| 收稿时间： | 2001-6-26 |
| 修稿时间： | 2001年6月26日 |
STUDY ON THE FINITE DIFFERENCE METHOD IN CALCULATION OF INTERNAL FORCES OF PRESTRESS-ANCHORED ANTISLIDE PILES |
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| Dai Zihang,Shen Pusheng,Pen Zhenbing.STUDY ON THE FINITE DIFFERENCE METHOD IN CALCULATION OF INTERNAL FORCES OF PRESTRESS-ANCHORED ANTISLIDE PILES[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(3):407-413. | |
| Authors: | Dai Zihang Shen Pusheng Pen Zhenbing |
| Affiliation: | Dai Zihang1,2,Shen Pusheng2,Pen Zhenbing3 |
| Abstract: | The disadvantages of existing calculation methods for the internal forces of the prestress-anchored antislide pile are pointed out. Based on the principle of the foundation coefficient method in calculating the internal forces of the ordinary antislide pile,the finite difference method is presented to calculate the internal forces of the whole prestress-anchored antislide pile. The corresponding formulae are derived in detail. The pile can be analyzed as a complete entity. It is not necessary to divide the pile into two segments by the sliding surface like the existing methods. The ordinary antislide pile and the prestress-anchored pile are compared by an engineering example. The advantages are showed of the prestress-anchored pile. Meanwhile the example also shows that the finite difference method can obtain the calculation results quickly and precisely and model all sorts of working cases of the pile. Therefore this is a simple and useful method in analyzing the internal forces of the prestress-anchored antislide pile. Monitoring work shows the calculation results are satisfying. |
| Keywords: | civil engineering prestress antislide pile internal force foundation coefficient method finite difference method working case |
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