Debonding of externally bonded polypara phenylene benzobisoxazole (PBO) meshes for flexural strengthening of reinforced concrete beams

Ngày tải lên: 23/03/2014, 20:34

... 38 Seismic Design of Reinforced Concrete Bridges 38.1 Introduction Two-Level Performance-Based Design • Elastic vs Ductile Design • Capacity Design Approach 38.2 Typical ... Shear Design • Joint Shear Cracking Check • Design of Joint Shear Reinforcement 38.1 Introduction This chapter provides an overview of the concepts and methods used in modern seismic design...

Ngày tải lên: 08/07/2014, 12:20

... model to predict the service life of reinforced concrete bridges impacted by chloride impact near coastal areas in Vietnam 3) Propose the methods to increase the service life To apply the model ... REVIEW OF THE STUDIES ON THE SERVICE LIFE OF CONCRETE BRIDGES IMPACTED BY CHLORIDE PENETRATION IN THE WORLD AND IN VIETNAM 1.1 Introd...

Ngày tải lên: 26/09/2014, 09:43

... Concrete Institute 307-69 Specification for the Design and Construction of Reinforced Concrete Chimneys 307-88 Standard Practice for the Design and Construction of Cast-in-Place Reinforced Concrete ... Concrete Chimneys 318 Building Code Requirements for Structural Concrete 505-54 Standard Specification for the Design and Construction of Reinforced...

Ngày tải lên: 24/10/2014, 15:45

... including the design strength of the concrete, the thickness of the concrete chimney shell, the size and position of reinforcing steel, details and dimensions of the chimney lining, and information ... CHAPTER 3 CONSTRUCTION REQUIREMENTS 3.1—General Concrete quality, methods of determining strength of concrete, field tests, concrete proportions and consistency,...

Ngày tải lên: 24/10/2014, 15:46

Ngày tải lên: 24/10/2014, 22:00

... moment of inertia Ig = moment of inertia of gross concrete section Temperature-Induced Deflections k = constant L = Live load, span length M = bending moment Mcr = cracking moment n = distance of ... structures Office building - cantilever roof and floor slabs Daily temperature changes caused deflections of about one inch at the cantilever ends of roof slabs in a four-stor...

Ngày tải lên: 24/10/2014, 22:01

Ngày tải lên: 14/11/2014, 11:16

... CRACKING MODE AND SHEAR STRENGTH OF LIGHTWEIGHT CONCRETE BEAMS KUM YUNG JUAN (B.Eng (Hons.) Malaya) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY DEPARTMENT OF CIVIL AND ENVIRONMENTAL ... Properties of Lightweight Concrete 23 2.4.1 Compressive Strength of Lightweight Concrete 23 2.4.2 Modulus of Elasticity and Poisson’s Ratio 25 2.4.3 Te...

Ngày tải lên: 10/09/2015, 15:48

... can be computed by taking the first moment of the areas of the transformed section The transformed area of the FRP may DESIGN AND CONSTRUCTION OF EXTERNALLY BONDED FRP SYSTEMS 440.2R-25 Fig 10.1—Typical ... as to develop the strength of the FRP system The development length is a function of the strength of the substrate and the rigidity...

Ngày tải lên: 24/10/2014, 21:59

... surface of cross section -118- 900 21 50 21 50 27 5 D2 D1 1700 25 0 P 325 P 1800 1700 100 520 0 Beam s A1 and A2 21 50 21 50 900 27 5 P D2 D1 1700 1800 375 325 P 1700 520 0 Beam s B1 21 50 21 50 900 27 5 D1 D2 ... e2θ ; * v1 = v1 ; * v2 = v2 ; θ 1* = θ ; * 2 = 2 ; where e1 and e2 are the eccentricities of cable at the deviators and 2, respectively -114- (6.7) u2*,v2*,θ 2* Ca...

Ngày tải lên: 07/11/2012, 11:04

... [K 11 ] 1 ({ΔF1 } + {R1 } − [K 21 ]{ΔU }) (2.22) {ΔF2 } = [K 22 ]{ΔU } + [K12 ]{ΔU } − {R2 } (2.23) K 12 ⎤ K 22 ⎥ ⎦ ⎧ ΔU ⎫ ⎬ ⎨ ⎩ΔU ⎭ (1) ⎧ ΔF ⎫ ⎧ R ⎫ = ⎨ 1 +⎨ 1 ⎩ΔF2 ⎭ ⎩ R2 ⎭ ⎡ K 11 ⎢K ⎣ 21 Solving ... (3 .18 a) 12 K 6K 12 K 6K ⎤ ⎡ ⎢0; − L3 ; − L2 ; 0; L3 ; − L2 ⎥ ⎣ ⎦ 12 K 1+ L2 (3 .18 b) ⎡ 12 ⎛ 12 K ⎞ 6 12 ⎛ 12 K ⎞ ⎤ 0; − + x; ⎜ − − ⎟ + x; 0; − x; ⎜ − ⎟ + x⎥ ⎢ L⎠ L ⎦ 12 K L...

Ngày tải lên: 07/11/2012, 11:04