| 混合法在深基坑排桩锚杆支护计算中的应用研究 |
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| 引用本文： | 朱彦鹏,李元勋.混合法在深基坑排桩锚杆支护计算中的应用研究[J].岩土力学,2013,34(5):1416-1420. |
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| 作者姓名： | 朱彦鹏 李元勋 |
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| 作者单位： | 兰州理工大学 土木工程学院，兰州 730050 |
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| 基金项目： | 国家自然科学基金资助项目(No. 50978129) |
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| 摘 要： | 深基坑排桩预应力锚杆支护工程中，作用于桩身的土压力与桩身位移呈非线性变化。对于这种非线性变化问题，基于位移土压力模型，考虑支护结构位移的影响，推导了混合法计算公式。混合法可以有效跟踪支护结构的变形过程，反映土体与桩之间的非线性作用关系。结合工程实例，编制了MATLAB计算程序，计算结果较好地反映了土压力与桩身位移之间的非线性变化关系，并与理正软件计算结果进行对比分析，结果表明两者吻合较好，从而证明该计算方法具有较好的适用性，对深基坑支护结构设计有较好的参考价值。
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| 关 键 词： | 深基坑 位移土压力 混合法 非线性 |
| 收稿时间： | 2012-03-05 |
Application of mixing method to calculation of row pile anchor support in deep excavation |
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| ZHU Yan-peng,LI Yuan-xun.Application of mixing method to calculation of row pile anchor support in deep excavation[J].Rock and Soil Mechanics,2013,34(5):1416-1420. |
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| Authors: | ZHU Yan-peng LI Yuan-xun |
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| Institution: | School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China |
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| Abstract: | In the project of deep excavation pit supported by piles with prestressed anchors, the soil pressures acting on the pile and pile body displacement are nonlinearly changed. For the nonlinear change issue, based on displacement soil pressure model, considering the influence of the displacement of supporting structure, a calculation formula of mixing method is derived. The mixing method can effectively track the deformation process of supporting structure, and reflect the nonlinear function relationship between soil and the pile. Combining with the engineering practice, the MATLAB program is compiled; the nonlinear relationship between earth pressure and pile body displacement is well reflected by the calculation results; the calculated results are analytically compared with Lizheng software. It is shown that they can anastomose each other well so as to prove that, this calculation method has wide applicability and a good reference value for deep excavation pit supporting structure design. |
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| Keywords: | deep excavation displacement earth pressure mixing method nonlinearity |
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