Temporary Structure Design – Chrisr Souder (TCE0001)

Temporary Structure Design – Chrisr Souder, CONTENTS (Nội dung tài liệu):

Thiết kế hệ cốp pha – giáo chống

1 Statics Review

1.1. Statics Review

1.2. Units of Measure

1.2.1. Common Units of Measure / 2

1.3. Statics / 3

1.3.1. Centroids/Center of Gravity / 4

1.3.2. Properties of Sections / 7

2 Strength of Materials Review 18

2.1. Stress / 18

2.1.1. Normal Stress / 18

2.1.2. Bending Stress / 19

2.1.3. Shear Stress / 19

2.1.4. Horizontal Shear Stress / 20

2.1.5. Modulus of Elasticity

2.2. Bending Moments / 22

2.2.1. Maximum Bending Moments / 22

2.2.2. Maximum Shear / 23

2.2.3. Law of Superposition / 23

2.3. Materials / 24

2.3.1. Factors of Safety / 24

2.3.2. Grades of Steel / 24

2.3.3. Compact Beam / 25

2.3.4. Wood / 26

2.4. Deflection / 27

2.5. Shear and Moment Diagrams / 28

2.6. Beam Design / 34

2.6.1. Combined Stress / 41

3 Types of Loads on Temporary Structures 45

3.1. Supports and Connections on Temporary Structures / 45

3.1.1. Forces and Loads on Temporary Structures / 47

3.1.2. Materials—How Different Materials Create Different Forces / 48

4 Scaffolding Design 59

4.1. Regulatory / 59

4.2. Types of Scaffolding / 59

4.3. Loading on Scaffolding / 61

4.4. Scaffolding Factors of Safety / 62

4.5. Scaffold Components / 62

4.5.1. Planking / 62

4.5.2. Bearers (Lateral Supports) / 62

4.5.3. Runners / 62

4.5.4. Posts / 63

4.5.5. OSHA / 63

4.6. Scaffold Design / 63

4.6.1. Securing Scaffolding to the Structure / 69

4.6.2. Hanging Scaffold / 69

5 Soil Properties and Soil Loading 75

5.1. Soil Properties / 75

5.1.1. Standard Penetration Test and Log of Test Borings / 77

5.1.2. Unit Weights above and below the Water Table / 78

5.1.3. Testing / 81

5.2. Soil Loading / 81

5.2.1. Soil Mechanics / 81

5.2.2. Active Soil Pressure and Coefficient / 82

5.2.3. Soil Pressure Theories / 83

5.2.4. Soil Pressure Examples Using Rankine Theory / 85

5.2.5. Soil Pressures Using State and Federal Department Standards / 91

6 Soldier Beam, Lagging, and Tiebacks 104

6.1. System Description and Units of Measure / 104

6.1.1. Beams/Piles / 104

6.1.2. Lagging / 105

6.1.3. Tiebacks / 105

6.2. Materials / 105

6.2.1. Steel AISC / 105

6.2.2. Wood Species—National Design Specifications (NDS) for Wood Construction / 106

6.2.3. Lagging / 108

6.2.4. Soldier Beam Design / 112

6.2.5. Tiebacks and Soil Nails / 121

7 Sheet Piling and Strutting 130

7.1. Sheet Piling Basics / 130

7.1.1. Materials / 130

7.1.2. System Description and Unit of Measure / 130

7.1.3. Driving Equipment / 133

8 Pressure and Forces on Formwork and Falsework 155

8.1. Properties of Materials / 155

8.1.1. Unit Weights / 155

8.1.2. Forces from Concrete Placement / 157

9 Concrete Formwork Design 178

9.1. General Requirements / 178

9.1.1. Concrete Specifications / 178

9.1.2. Types and Costs of Forms in Construction / 179

9.2. Formwork Design / 180

9.2.1. Bending, Shear, and Deflection / 180

9.2.2. Form Design Examples Using All-Wood Materials with Snap Ties or Coil Ties

9.2.3. Formwork Charts / 199

9.2.4. Estimating Concrete Formwork / 219

9.3. Conclusion / 228

10 Falsework Design 229

10.1. Falsework Risks / 229

10.1.1. Falsework Accidents / 230

10.1.2. Falsework Review Process / 233

10.1.3. Falsework Design Criteria / 235

10.1.4. Load Paths for Falsework Design / 236

10.1.5. Falsework Design Using Formwork Charts / 242

10.1.6. Bridge Project / 262

11 Bracing and Guying 267

11.1. Rebar Bracing and Guying / 268

11.2. Form Bracing with Steel Pipe and Concrete Deadmen / 269

11.2.1. Life Application of Friction Forces / 278

11.3. Rebar Guying on Highway Projects / 279

11.4. Alternate Anchor Method / 289

12 Trestles and Equipment Bridges 300

12.1. Basic Composition of a Standard Trestle / 300

12.1.1. Foundation—Pipe, H Pile, and Wide-Flange and Composite Piles / 301

12.1.2. Cap Beams—Wide-Flange Beams with Stiffeners / 301

12.1.3. Stringers/Girders—Wide-Flange Beams Braced Together / 303

12.1.4. Lateral Bracing / 303

12.1.5. Decking—Timber or Precast Concrete Panels / 306

12.1.6. Environmental Concerns / 308

12.1.7. Stringer Design / 325

12.1.8. Star Pile Design and Properties / 340

12.2. Other Projects Utilizing Methods of Access / 341

12.3. Conclusion / 343

13 Support of Existing Structures 344

13.1. Basic Building Materials / 345

13.1.1. Example 13.1 Pipe Unit Weight / 346

13.1.2. Example 13.2 Existing Water Treatment Plant / 347

13.1.3. Example 13.3 Temporary Pipe Supports / 354

Appendixes 369

Appendix 1: Steel Beams (AISC) 371

Appendix 2: Steel Pipe 391

Appendix 3: H Pile (AISC) 393

Appendix 4: Allowable Buckling Stress 395