— prestressed concrete construction

... Arrange Construction Stage 27 29 Define Construction Stage 29 Construction Stage arrangement 34 Load input 37 Performing Structural Aanlysis 51 Construction Stage Analysis of Prestressed Concrete ... for the Construction stage analysis of prestressed concrete box bridge (FCM) using the Wizard”, and will not be repeated in this tutorial Construction Stage Analysis of Prestressed Concrete ... 28 Construction Stage Analysis of Prestressed Concrete Box Bridge (FCM) using General Functions Define the construction stage arrangement and pier table, construction of segments to 12 and construction...

Ngày tải lên: 01/04/2014, 03:20

... MANUAL OF CONCRETE PRACTICE 3.3—Wall design 3.4—Roof design Chapter 4 Construction procedures, p 373R-9719 4.1 Concrete 4.2—Shotcrete 4.3—Forming 4.4—Nonprestressed steel reinforcement 4.5—Prestressing ... 373R-97-23 5.1—Testing 5.2—Acceptance criteria 5.3—Visual criteria 5.4—Repairs and retesting Chapter 6—References, p 373R-97-23 6.1—Recommended references 6.2—Cited references CHAPTER 1—GENERAL 1.1—Introduction ... dome ring CHAPTER 4 CONSTRUCTION PROCEDURES 4.1 Concrete 4.1.1 Scope—Procedures for concrete construction should be as specified in ACI 301, except as modified in this report 4.1.2—Floors 4.1.2.1...

Ngày tải lên: 24/10/2014, 17:26

... dome ring 2.4.2.7 Minimum concrete cover—Minimum cover to the prestressed reinforcement in the dome ring is in (25 mm) CHAPTER 3—MATERIALS 3.1 Concrete 3.1.1 General Concrete should meet the requirements ... recommendations 5.2—Liquid-loss limit 5.3—Visual criteria 5.4—Repairs and retesting Chapter 6—References, p 372R-19 6.1—Referenced standards and reports 6.2—Cited references Appendix A—Recommendations ... coatings for tanks that store aggressive materials CHAPTER 4 CONSTRUCTION PROCEDURES 4.1 Concrete 4.1.1 General—Procedures for concrete construction should be as specified in ACI 301, except as...

Ngày tải lên: 24/10/2014, 17:26

... are two kinds of beam, namely, conventionally prestressed concrete beam with external cables (below referred as “typical beam”) and prestressed concrete beam with large eccentric cables (below ... of the lack of bond between the concrete and the cable -110- External Cable Imaginary concrete strain at cable level Deviator Concrete beam Fig.6.1 Imaginary concrete strain at the cable level ... accurately show the general behavior of prestressed concrete beams with external cables Crushing of concrete Typical beam Beam with large eccentricities Crushing of concrete Fig.6.10 Ultimate state...

Ngày tải lên: 07/11/2012, 11:04

... non -prestressed reinforcement in addition to the prestressing cables in the tension zone Prestressed Concrete Beams Bonded Prestressed Concrete Beams Perfectly Bonded Unbonded Prestressed Concrete ... of post-tensioned prestressed concrete beams An initial distinction is helpful when dealing with definition of prestressed concrete structures A post-tensioned prestressed concrete beams may ... along the beam Prestressed concrete beams may also be classified as either fully or partially prestressed Fully prestressed beams contain only prestressing cables, whereas partially prestressed...

Ngày tải lên: 07/11/2012, 11:04

... of prestressed concrete bridges : concepts and principles / Robert Benaim p cm Includes bibliographical references and index Bridges, Concrete Design and construction Reinforced concrete construction ... Reinforced concrete 3.1 General 3.2 The historical development of reinforced concrete 3.3 General principles of reinforced concrete 3.4 Reinforced concrete in bending 3.5 The cracking of reinforced concrete ... reinforced concrete Imposed loads and imposed deflections Creep and relaxation of concrete Truss analogy Strut-and-tie analogy Continuity between the concepts of bending and arching action Prestressed concrete...

Ngày tải lên: 18/02/2014, 18:20

... Advantages of Prestressed Concrete 1.4 Materials 1.5 Methods of Prestressing 10 1.6 Background Uses of Prestressed Concrete 15 Stresses in Prestressed ... Engineering Design (1) 1.3 Advantages of Prestressed Concrete The main advantages of prestressed concrete (PSC) are: Smaller Section Sizes Since PSC uses the whole concrete section, the second moment ... can span further with prestressed concrete than it can with ordinary reinforced concrete Durability Since the entire section remains in compression, no cracking of the concrete can occur and...

Ngày tải lên: 01/05/2014, 09:45

... units 145 Points of supervision 145 Prestressed concrete 147 Pre-tensioned prestressed concrete 151 Post-tensioned prestressed concrete 153 Handling prestressed concrete 25 115 Acceptance of manufactured ... The concrete cube 103 Compliance and non-compliance with specification 104 Points of supervision 23 Quality control of site produced concrete 108 Precast concrete 109 Applications of precast concrete ... using concrete 190 Repairs using mortar 191 Repairs using specialised materials 193 Repairing cracks in concrete 194 The use of vacuum in repair 195 Sprayed concrete repair 195 Repair of leaking concrete...

Ngày tải lên: 31/05/2014, 02:04

... Compression and tension 72 v Prestressed concrete Concrete for prestressing 77 Air-entrained concrete 77 Supervisory skills 79 The role of the supervisor within the construction industry 80 Training ... operations 169 Walling—sequence of operations 175 Single sided wall construction 184 Column casting 184 Beam construction 186 Floor casting—suspended floors 190 Table forms in slab construction 191 ... Stair construction 195 Bin and hopper construction 197 Culvert, tunnel and shaft construction 198 Supervising the construction process 200 Checklist 200 vii 11 203 Piling 215 Diaphragm wall construction...

Ngày tải lên: 31/05/2014, 02:05

... Reinforcing Yield Stress, fy edit box • Type in the Concrete Strength, fc edit box • Type 60 in the Shear steel Yield Stress, fys edit box • Type in the Concrete Shear Strength, fcs edit box • Accept...

Ngày tải lên: 06/07/2014, 09:20

... 4-PROPORTIONING, PRODUCTION, AND DELIVERY OF CONCRETE 4.1 -Concrete 4.1.1 Proportioning concrete Concrete proportioning is normally the responsibility of the ready-mixed concrete producer Only the main considerations ... Plain Concrete ACI 347-78 Recommended Practice for Concrete Formwork ACI 503R-80 Use of Epoxy Compounds with Concrete ACI 503.2-79 Standard Specification for Bonding Plastic Concrete to Hardened Concrete ... 598, and 600 21 “Removing Stains from Concrete, ” Concrete Construction, V 6, No 5, May 1961, pp 132-135 22 “Removing Stains and Cleaning Concrete Surfaces,” Concrete Information No [lS214.0lT Portland...

Ngày tải lên: 24/10/2014, 16:03

... 7.4 Concrete pipe Chapter 8—Walls, p 224.3R-32 8.1—Introduction 8.2—Types of joints in concrete walls 8.3—Contraction joints 8.4—Isolation or expansion joints 8.5 Construction joints Chapter 9—Liquid-retaining ... joints 6.4 Construction joints 6.5—Hinge or warping joints 6.6—Parking lots Chapter 7—Tunnels, canal linings, and pipes, p 224.3R29 7.1—Introduction 7.2 Concrete tunnel linings 7.3 Concrete canal ... COMMITTEE REPORT 5.3—Isolation or expansion joints 5.4 Construction joints 5.5—Special considerations Chapter 6—Pavements, p 224.3R-24 6.1—Introduction 6.2—Contraction joints 6.3—Isolation or expansion...

Ngày tải lên: 24/10/2014, 17:40

... provisions for prestressed concrete as well as nonprestressed concrete However, the torsion design provisions in this code are applicable only to nonprestressed concrete and not to prestressed concrete ... the concrete and the nonprestressed reinforcement The stress limitations are discussed in Sections 5.5 and 5.8 5.3.2 - Prestressed Members 5.3.2.1 -Concrete Flexural stresses in prestressed concrete ... Torsion Design of Prestressed and Non -prestressed Beams,” Journal, Prestressed Concrete Institute, V 25, No Sept.-Oct 1980, pp 32-100 6.8 Collins, M.P and Mitchell, D Prestressed Concrete Structures,...

Ngày tải lên: 24/10/2014, 21:58

... 2.1—Behavior 2.2—Methods of analysis 2.3—Cracking 2.4—Deflections 2.5—Shear and torsion Chapter 3—Time-dependent behavior, p 423.5R-12 3.1—Prestress losses 3.2—Cracking 3.3—Deflections 3.4—Corrosion ... analyses 5.6—Connections 5.7—Summary Chapter 6—Applications, p 423.5R-28 6.1—Early applications 6.2—Pretensioned concrete components 6.3—Post-tensioned building construction 6.4—Bridges 6.5—Other ... aspects 4.6—Summary of serviceability Chapter 5—Effects of load reversals, p 423.5R-20 5.1—Introduction 5.2—Design philosophy for seismic loadings 5.3—Ductility 5.4—Energy dissipation 5.5—Dynamic...

Ngày tải lên: 24/10/2014, 22:01

Ngày tải lên: 14/11/2014, 11:10

... Prestressing concrete, Bê tông ứng suất trƣớc, bê tông cốt thép, essentially is a composite material It consists of concrete and steel loại vật liệu hỗn hợp, bao gồm bê tông cốt thép Prestressed concrete, ... Prestressed concrete, also reinforced The concrete component carries the compressive Phần bê tông chịu lực nén http://www.ketcausoft.com Hồ Việt Hùng Prestressed Concrete Design Manual – Hƣớng dẫn thiết ... 14 7.1.1 Kích thƣớc dầm 14 http://www.ketcausoft.com Hồ Việt Hùng Prestressed Concrete Design Manual – Hƣớng dẫn thiết kế bê tông ứng suất trƣớc 7.1.2 Dimensions of slab...

Ngày tải lên: 30/06/2015, 08:18

Ngày tải lên: 12/10/2016, 18:39

... Design of prestressed concrete/ R.I.Gilbert, N.C.Mickleborough p cm Includes bibliographical references ISBN 0-04-445402-3 (alk paper) ISBN 0-04-445403-1 (pbk.: alk paper) Prestressed concrete construction ... reserved British Library Cataloguing in Publication Data Gilbert, R.I Design of prestressed concrete Prestressed concrete I Title II Mickleborough, N.C 666.893 ISBN 0-203-98586-9 Master e-book ... Page iii DESIGN OF PRESTRESSED CONCRETE tailieuxdcd@gmail.com Page ii This page intentionally left blank tailieuxdcd@gmail.com Page iii DESIGN OF PRESTRESSED CONCRETE tailieuxdcd@gmail.com...

Ngày tải lên: 31/10/2016, 21:22

... Specifications and have designed at least one prestressed concrete girder bridge, including the bridge substructure Designers who have not designed prestressed concrete bridges, but have used either ... DTFH61-02-T-63032 2-2 tailieuxdcd@gmail.com Design Step - Example Bridge Prestressed Concrete Bridge Design Example Materials Concrete strength Prestressed girders: Deck slab: Substructure: Railings: Initial ... Elevation View of Prestressing Strands Prestressed Concrete Bridge Design Example Spa @ 2" Transfer Length of Strands = 2'-6" Design Step - Example Bridge Prestressed Concrete Bridge Design Example Location...

Ngày tải lên: 31/10/2016, 21:25