韩尚宇, 云雷, 程聪, 魏星星, 杨坤. 不同排水方式对基坑开挖稳定状态影响分析[J]. 南昌航空大学学报(自然科学版), 2016, 30(4): 82-85. DOI: 10.3969/j.issn.1001-4926.2016.04.014
引用本文: 韩尚宇, 云雷, 程聪, 魏星星, 杨坤. 不同排水方式对基坑开挖稳定状态影响分析[J]. 南昌航空大学学报(自然科学版), 2016, 30(4): 82-85. DOI: 10.3969/j.issn.1001-4926.2016.04.014
HAN Shang-yu, YUN Lei, CHENG Cong, WEI Xing-xing, YANG Kun. Analysis on the Influence of Different Drainage Methods on the Stability of Foundation Pit Excavation[J]. Journal of nanchang hangkong university(Natural science edition), 2016, 30(4): 82-85. DOI: 10.3969/j.issn.1001-4926.2016.04.014
Citation: HAN Shang-yu, YUN Lei, CHENG Cong, WEI Xing-xing, YANG Kun. Analysis on the Influence of Different Drainage Methods on the Stability of Foundation Pit Excavation[J]. Journal of nanchang hangkong university(Natural science edition), 2016, 30(4): 82-85. DOI: 10.3969/j.issn.1001-4926.2016.04.014

不同排水方式对基坑开挖稳定状态影响分析

Analysis on the Influence of Different Drainage Methods on the Stability of Foundation Pit Excavation

  • 摘要: 基坑稳定状态受基坑开挖过程中的排水施工方式影响明显。采用数值模拟方法,对基坑开挖过程中仅坑内排水、基坑内外同步排水、先同步降水后坑外水位上升3种工况下的基坑稳定状态进行了研究。结果表明:基坑稳定安全系数随着开挖深度的增大而降低,在开挖前期对基坑排水要求较低,基坑仅内侧排水时的稳定状态最差,坑外排水有助于改善基坑稳定状态。

     

    Abstract: The stability of the foundation pit is affected by the drainage construction method. In this paper, the numerical simulation method is used to study the stability of the foundation pit under the three conditions:pit drainage, synchronous drainage of foundation pit and outside, concretion and then the water level outside pit rising in excavation course of foundation pit. The research result shows that the safety factor of foundation pit decreases with the increase of excavation depth; pit drainage in the earlier stage of foundation pit engineering is not very important. The stability of the foundation pit is the worst when it is only drained inside, and drainage outside pit is useful for improving the steady state.

     

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