文档介绍：摘要
基坑支护是为保证地下结构施工及基坑周边环境的安全,对基坑侧壁及周边环境采用的支挡、加固与保护措施。
本设计内容分为:基坑支护结构类型,基坑支护原理,实际支护方案设计。其方案为现代(邯郸)汽贸城会展中心基坑支护,采用北京理正深基坑软件(F-SPW)。本工程拟建建筑物为地上5层,地下1层,框架-剪力墙结构。
经过对基坑的平面尺寸、开挖深度、周边环境,地基土层的工程地质情况,方案的施工工艺、适用条件、适应范围、工程造价等各方面的综合比较论证,选定基坑分区分段采用以下三种方案:
方案1:放坡开挖支护;
方案2:桩锚支护;
方案3:土钉墙支护。
关键词:基坑支护;支护结构类型;桩锚支护;土钉墙支护
Abstract
The foundation pit support is about the pit wall and the surrounding environment of retaining, strengthening and protection measures, which is to ensure the safety of the underground structure construction and the pit surrounding environment.
The design is divided into the foundation pit support structure type, principles and scheme design for practical support. The foundation pit support for Modern (Handan) Auto Trade City Exhibition Center is adopting Beijing Lizheng Software (F-SPW) of the version to design and calculate. The draft building in this project consists of 5 floors above ground and 1 underground floor, which adopts frame - shear wall structure.
After parison of those aspects of pit :plane dimension, excavation depth, the surrounding environment, engineering geological conditions of the foundation soil, construction technology, applicable condition, adaptation range, engineering cost ,I made 3 options for foundation pit support under different environment zoning and segmentation conditions:
Scheme 1: step-slope excavation support;
Scheme 2: pile-anchor retaining;
Scheme 3: soil nailling wall support.
Key words: foundation pit support; structure type of foundation pit support; pile anchor retaining; soil nailing wall support
目录
摘要 I
Abstract II
目录 I
前言 1
1 绪论 2
概述 2
基坑支护的现状和发展 2
基坑支护出现的问题 3
2 基坑支护结构类型 5
概述 5
支护结构类型 6
放坡开挖 6
喷锚支护 6
土钉墙支护 7
7
地下连续墙支护 8
水泥土墙支护 8
逆作拱墙支护 8
3 基坑支护原理 10
基坑支护设计原则 10
土压力理论 11
郎肯土压力理论 11
库仑土压力理论 12
基坑稳定性分析 13
整体稳定性分析 13
基坑渗流稳定 14
基坑地下水控制