摘要
土钉墙是基坑支护中非常经济、有效的支护形式,但由于支护体系主要依赖于土体自身稳定性及土体强度,使其支护的深度受到限制。为增加土钉墙支护的深度,可采取复合土钉墙支护形式。但在土钉墙支护的基础上增加何种复合结构,需要了解坡体的受力状态,对坡体受力状态的了解是支护设计和施工的前提。介绍了深基坑边坡采用复合土钉墙支护时,由于设计、施工等原因,造成边坡局部失稳的实例,为深基坑土钉墙支护设计和施工提供了宝贵的经验。可以看出,深基坑复合土钉墙支护,除常用的增加锚杆以增加边坡整体稳定性措施外,坡脚部位的稳定问题也需高度重视。
Soil-nailed wall used to support the slope of deep foundation pit is an economic method. Due to the supporting system mainly relying on the soil stability and the soil intensity, it will limit the depth of the supported slope. For increasing the supported depth of slope, the composite soil-nailed wall to support slope is considered. But what kind of construction used to soil-nailed wall supporting system lies on the stress state of the slope. To understand that the slope Stress state is the premise of slope supporting design and construction, the paper gives two cases of deep foundation pit slope supported by composite soil-nail wall, and provides the valuable cases to the designers and the builders when they consider soil-nail wall to support deep foundation pit slopel Through the analysis of these cases, much attention should be paid to the stability of slope toe, improving the overall stability of slope with soil anchors, when composite soil-nail wall is used to support the slope of deep foundation pit.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第A02期5410-5412,共3页
Chinese Journal of Rock Mechanics and Engineering
关键词
基础工程
土钉墙
滑坡
深基坑
边坡
foundation engineering
soil nail wall
slide
deep foundation pit
slope
