xx明星广场基坑设计.doc

在施工场地狭小的地方进行基坑幵挖支护是土木工程屮最复杂的技术领域之一，它 不仅要保证基坑施工过程中的土体稳定，而II要严格限制周边的地层位移以确保环境安 全。土钉支护是近年来发展起来用于土体开挖和边坡稳定的一种新的支护技术，由于土 钉支护具有施工速度快、施工所需场地较小、用料省、造价低的优点，故其已在深基坑 支护中的得到了广泛的应用，具有很好的发展前景。 此文以XX明星广场基坑设计为例，介绍了基坑支护设计的结构选型、土钉支护结 构的设计、土钉支护体系穂定性验算(应用到36度法、条分法)以及施工监测等。以 期对同类型的基坑支护设计有所帮助。 关键词：土钉支护36度法施工监测 Abstract: Excavation for support In places where a small construction site is one of the most complex civil engineering technology，It is not only to ensure foundation stability of the soil in the construction process，but also to strictly limit the displacement of the surrounding ground to ensure the environmental safety. Soil nailing is a new support technology for soil excavation and slope stability，which is a recent development. As with construction speed, small space requirements for construction，material province，the advantages of low cost，so it has been widely used in the deep excavation, and has good prospects for development. This paper takes Ningbo guanhua star square foundation pit design as an example to introduces the selection of the structure of the foundation pit supporting design, soil nail bracing structure design, soil nailing support system applied to calculating stability (36 degrees method，a division) and construction supervision, etc . In order to offer some help to the same type of foundation pit bracing design. Keywords: soil nailing 36 degrees method construction monitoring TOC \o 1-5 \h \z 觀 1 1餓 3 弓 IB 3 HYPERLINK \l bookmark3 \o Current Document \h 土钉支护在我国的发展概况 3 HYPERLINK \l bookmark4 \o Current Document \h 1.3本设计的主要目的 3 HYPERLINK \l bookmark5 \o Current Document \h 2宁波冠华明星广场基坑支护设计任务书 4 HYPERLINK \l bookmark6 \o Current Document \h 2.1设计项目 4 HYPERLINK \l bookmark7 \o Current Document \h 2.2建设地点 4 HYPERLINK \l bookmark8 \o Current Document \h 2.3设计基本资料 4 HYPERLINK \l bookmark9 \o Current Document \h 2.3.1地层划分 4 HYPERLINK \l bookmark10 \o Current Document \h 土层物理力学性质指标 4 HYPERLINK \l bookmark11 \o Current Document \h 2.3.3地下水 5 HYPERLINK \l bo