CSASeminarPilingWork教案分析.ppt

5.2 阿克苏项目 Cases in AN Projects EA ( Square Hollow VS PHC Tube) PA ( Mis-interpretation of EA lessons learn costs extra money, EO good practice of sheeting piles) DCP (Lucky short piles) 5.2.1 宁波项目Ningbo Site 5.2.2 常州项目Gondola Site 事故池Emergency Pit（180kVS220k) 废气处理WGT (CFA or Pre-casted) Q A: Any questions? * * * * * * 管理资源吧（），提供海量管理资料免费下载！ 管理资源吧（），提供海量管理资料免费下载！ 桩基础简介 CSA Seminar 2: Piling Work 工程桩基础 Piling Work 第1节 概述 Section 1: General Introduction 第2节 桩的分类 Section 2 Type of Piles 第3节 典型施工工艺 Section 3 Typical Piling Construction 第4节 各种桩的经济技术比较 Section 4 Cost Comparison of Different Piles 第5节 特殊案例 Section 5 Typical Cases 第1节 概 述 Section 1 Brief Introduction 如果建筑场地浅层的土质不能满足建筑物对地基承载力和变形的要求、而又不宜采取地基处理措施时，就需要考虑以下部坚实土层或岩层作为持力层的深基础方案。桩基础是应用最为广泛的一类深基础。 In case that the bearing capacity and settle tolerance cannot be met, and the soil cannot be improved with some measures e.g. injection of cement mortar, etc., the piled foundation will be applied. 桩基础：基桩+承台。 Piled Foundation: Piles +Pile Cap 桩基础设计须满足地基承载力和变形这两项基本要求。 Basic requirements for pile design: Bearing capacity and settlement tolerance 承台 Pile Cap 桩 Pile 地基变形性验算： 附加应力验算 Model for Settlement Calculation Additional Stress Compensation from Soil Ground Level Ground Level Additional Stress 第2节 桩的分类 Section 2: Type of Pile 一、按桩的使用功能分类 Ⅰ Based on load : 1.竖向抗压桩 Anti-pressure pile 2.竖向抗拔桩 Anti-pull pile God says it is a anti-pull pile. Cases of Anti-pull Pile Soil Friction Piles to Pit U/G Water Level Soil Friction Wind Load Pile to Column Foundation 二、按桩承载性能分类 ⅡBased on bearing type: 1.摩擦桩 Friction Bearing Pile (a) 2.端承桩 End bearing Pile (d) 3.摩擦端承桩 End bearing Pile with Friction (c) 4.端承摩擦桩 Friction Bearing Pile with End bearing(d) 四种桩型图示： Sketches for the Four Types of Pile: 三、按桩身材料分类 Ⅲ Based on material 可分为木桩，混凝土桩，钢桩，组合桩等。 Wood pile, RC pile, Steel pile, etc. 四、按设置效应分类 Ⅳ Based on impaction on soil 1.非挤土桩 Non-soil-push pile 挖孔桩，钻孔桩 （包括成孔灌注桩） Bo