摘要
云南省蒙自地区的膨胀土危害频繁,是我国膨胀土危害最严重的地区之一。在充分认识膨胀土的特点、膨胀土的分布范围及基坑周边环境后,对基坑支护结构设计中力学参数的合理取值,水平膨胀力的影响,基坑变形特点,以及土方开挖、防排水、监测等措施方面进行分析。膨胀土场地的深基坑支护设计采用放坡+桩锚的基坑支撑体系是可行的。具有稳定性好、变形小、投入少,在多指标考察下综合效益最优的特点,对膨胀土地区深基坑支护的设计及施工能提供一定的参考和指导。
The hazard of expansive soil in Mengzi areas is one of the most serious regions in our country with higher occurrence frequency. Based on the knowledge and understanding the characteristics of the expansive soil and its distribution as well as the surrounding environment of the foundation pit, all factors including the reasonable value of mechanical parameters, the influence of the horizontal expansion force, deformation characteristics, and earth excavation, waterproof and drainage measures and monitoring measures are discussed during the design process of foundation pit supporting structure; it is approved that using pile and anchor supporting system is feasible in the deep foundation pit supporting design. It is of good stability, small deformation, lower investment and it is convinced to be the optimal solution under the multi-target evaluation; it can provide certain reference and guidance for design and construction of foundation pit supporting in expansive soil area.
作者
刘克文
阮永芬
贾荣谷
丁海涛
黄春丽
LIU Kewen RUAN Yongfen JIA Ronggu DING Haitao HUANG Chunli(The 14th Metallurgical Construction Corporation Yunnan Survey and Design Co. ,Ltd Kunming, Yunnan 650031, China Faculty of Architectural Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China Yunnan institute of economic management, Kunming 650031, China)
出处
《结构工程师》
北大核心
2017年第3期193-198,共6页
Structural Engineers
基金
横向项目(KKQS201306007和kkk0201506021)
国家青年基金项目(51508253)
关键词
膨胀土
蒙自场地
桩锚支撑体系
水平膨胀力
expansive soil, Mengzi site, the pile anchor supporting system, horizontal expansion force
