摘要随着经济的繁荣，城市建设的发展，开发利用地下空间越来越成为城市发展的新热点，因此，基坑支护工程也日益增多，建设规模也日益变大。基坑工程是一门综合了很多方面因素的学科，包括了结构的强度计算和稳定性验算，同时地质及水文条件等环境因素对其也有很大的影响和控制作用。另外一个方面，基坑支护是一种临时性的构筑物，所以一定是要考虑到它的经济因素的。如何设计出经济、合理、安全、可靠的基坑支护方案，是目前国内外建筑工程界共同研讨的课题。本文主要通过具体案例的基坑支护设计计算过程，详细介绍了钻孔灌注桩支护和土钉墙支护的设计计算方法，包括土压力计算，稳定性计算等，以及如何使用理正深基坑软件来进行辅助设计，对内支撑系统设计，降水（本文采用轻型井点降水）设计，基坑监测的要点及监测点布置方法也作了详细介绍。以此深化对土力学，基础工程，结构力学等学科的认识，提高一名土木人的综合素养。78430

毕业论文关键词      基坑支护   钻孔灌注桩  土钉墙  井点降水 

毕业设计说明书外文摘要

Title     The Excavation Supporting Design Of A Central  International Plaza Somewhere                         

Abstract With the prosperity of economy, the development of urban construction, development and utilization of underground space is more and more become a new hot spot of urban development, therefore, the increase of foundation pit supporting project, the construction scale is increasingly bigger。 Foundation pit engineering is a discipline of a combination of many factors, including the structure of the strength calculation and stability checking, environmental factors such as geological and hydrological conditions at the same time also has a great influence and control for its role。 How to design a economic, reasonable, safe and reliable foundation pit supporting scheme, is a common discussion topic of construction engineering at home and abroad。 This paper mainly through the specific case of foundation pit supporting design calculation process, supporting and bored piles are introduced in detail the design and calculation method of soil nail wall support, including soil pressure calculation, stability calculation, etc。, and how to use reason is deep foundation pit for aided design software, internal support system design, precipitation (this article USES the light well point precipitation) design, foundation pit monitoring points and monitoring point arrangement methods are also introduced in detail。 To deepen the soil mechanics and foundation engineering, the understanding of the subjects such as structural mechanics, and improve the comprehensive quality of a civil one。

Keywords    Foundation pit supporting    bored piles    soil nailing wall well-points dewatering

目   次

1  绪论 1

1。1  拟建工程概况 1

1。2  场地地形地貌及现状 1

1。3  地基土的构成、分布及特征分析 1

1。4  设计参数 2

1。5  设计思路及方案选择 2

2  支护结构设计与计算 5

2。1  AB段钻孔灌注桩加内支撑，以J2为计算点 5

2。2  BC段钻孔灌注桩加内支撑，以C5为计算点 12

2。3  AD段支护设计计算（放坡土钉墙），以C3为计算点