韩尚宇, 程聪, 云雷, 魏星星, 杨坤. 基坑内外水头差变化对支护结构性能影响分析[J]. 南昌航空大学学报(自然科学版), 2016, 30(3): 72-76. DOI: 10.3969/j.issn.1001-4926.2016.03.014
引用本文: 韩尚宇, 程聪, 云雷, 魏星星, 杨坤. 基坑内外水头差变化对支护结构性能影响分析[J]. 南昌航空大学学报(自然科学版), 2016, 30(3): 72-76. DOI: 10.3969/j.issn.1001-4926.2016.03.014
HAN Shang-yu, CHENG Cong, YUN Lei, WEI Xing-xing, YANG Kun. Analysis of the Influence of Water Head Difference of Foundation Pit on the Performance of Retaining Structure[J]. Journal of nanchang hangkong university(Natural science edition), 2016, 30(3): 72-76. DOI: 10.3969/j.issn.1001-4926.2016.03.014
Citation: HAN Shang-yu, CHENG Cong, YUN Lei, WEI Xing-xing, YANG Kun. Analysis of the Influence of Water Head Difference of Foundation Pit on the Performance of Retaining Structure[J]. Journal of nanchang hangkong university(Natural science edition), 2016, 30(3): 72-76. DOI: 10.3969/j.issn.1001-4926.2016.03.014

基坑内外水头差变化对支护结构性能影响分析

Analysis of the Influence of Water Head Difference of Foundation Pit on the Performance of Retaining Structure

  • 摘要: 基坑内外水头差常常是富水地区基坑施工质量控制的重点。基于具体工程实例,对水头变化情况下支护结构的变形和内力情况进行仿真分析,结果表明,基坑外水头增加基坑安全状态会变差,且当内外水头差增大时,距桩顶2 m段位置的水平和竖向位移增大明显,基坑底部及支护桩底的水平应力会有较大幅度的改变,但水头差变化对桩身的竖向应力影响较小。

     

    Abstract: Internal and external water head difference is often the focus of foundation pit construction quality control in water rich area. Based on the specific engineering examples, the deformation and internal forces of support structure under the condition of head change were investigated. Results show that outside the foundation pit water head increase the safety state will be worse, and when the internal and external head difference increases, the horizontal and vertical displacement of the pile head 2 m to the top of the pile is increased obviously, meanwhile the horizontal stress at the bottom of the foundation pit and the supporting pile will be changed greatly, but the change of head difference has little influence on the vertical stress of pile body.

     

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