抢险工况中基坑稳定性研究及应对措施  

RESEARCH ON THE STABILITY OF FOUNDATION PITS IN EMERGENCY RESCUE CONDITIONS AND CORRESPONDING MEASURES

作　　者：李志文 孙豫 韩鹏远 张翔 李辰阳 LI Zhi-wen;SUN Yu;HAN Peng-yuan;ZHANG Xiang;LI Chen-yang(Beijing Uni.-Construction Group Co.,Ltd.,100101,Beijing,China;CIGIS(China)Limited,100007,Beijing,China)

机构地区：[1]北京住总集团有限责任公司,北京100101 [2]建设综合勘察研究设计院有限公司,北京100007

出　　处：《建筑技术》2024年第24期3028-3031,共4页Architecture Technology

摘　　要：随着城市化进程的加快,高层建筑和地下空间开发项目日益增多,基坑工程的复杂性和重要性也随之增加。尤其在暴雨、地震等自然灾害等突发情况下,基坑工程面临更大的挑战。结合实际工程案例,分析了抢险工况下基坑稳定性影响因素,提出了科学合理的评估方法和应对措施,以期为工程实践提供有力支持,减少突发事件对基坑稳定性的影响,提高基坑工程的安全性和可靠性。研究结果表明,孔隙水压力和地面堆载对基坑支护结构位移有显著影响,及时排除孔隙水和控制地面超载是解决基坑险情的有效手段。通过数值仿真模型和实测数据的对比分析,验证了模型的合理性,提出了在雨季期间加强基坑监测、确保排水通道畅通及避免不合理超载等应对措施,为基坑工程的安全管理提供了重要参考。With the acceleration of urbanization,the number of high-rise buildings and underground space development projects is increasing,and the complexity and importance of foundation pit engineering are also increasing.Especially in the sudden situation of natural disasters such as rainstorm and earthquake,foundation pit engineering is facing greater challenges.Based on practical engineering cases,the factors affecting the stability of foundation pits under emergency conditions were analyzed,and scientific and reasonable evaluation methods and response measures were proposed to provide strong support for engineering practice,reduce the impact of emergencies on the stability of foundation pits,and improve the safety and reliability of foundation pit engineering.The research results indicate that pore water pressure and ground loading have a significant impact on the displacement of foundation pit support structures.Timely elimination of pore water and control of ground overload are effective means to solve foundation pit hazards.By comparing and analyzing numerical simulation models with measured data,the rationality of the model was verified,and measures were proposed to strengthen foundation pit monitoring,ensure smooth drainage channels,and avoid unreasonable overloading during the rainy season.These measures provide important references for the safety management of foundation pit engineering.

关 键 词：深基坑 基坑稳定性 暴雨 抢险 

分 类 号：TU74[建筑科学—建筑技术科学]