论文信息 - Sustainability of Concrete Infrastructures

Sustainability of Concrete Infrastructures

AbstractSustainability of modern civil engineering structures is the broad objective of the present paper. Infrastructures should be designed and built to be used satisfactorily over longer life spans without collapse or deterioration requiring major repair. Progress in materials, analysis, and design makes it possible to achieve a life span for concrete infrastructures of 100–125 years. An appropriate life span can be a contractual requirement for all civil engineering infrastructures. For these objectives, provisions for lasting satisfactory serviceability are increasingly adopted in codes. Only deficient serviceability or strength, developing gradually over a number of years, is discussed. Lessons to be learned from collapse, excessive deflection and cracking of bridges, and intolerable sagging of slab floor are discussed. The paper presents limited means to control long-term deflection and cracking of bridges, including slab bridges and flat-plate floors; other recommendations that enhance sustainabil...

[1] Mamdouh El-Badry,et al. Deflection prediction for concrete bridges: analysis and field measurements on a long-span bridge , 2001 .

[2] Mamdouh El-Badry,et al. Deflection Control of Prestressed Box Girder Bridges , 2014 .

[3] Qiang Yu,et al. Pervasiveness of Excessive Segmental Bridge Deflections: Wake-Up Call for Creep , 2011 .

[4] Amin Ghali,et al. Double-headed studs improve corbel reinforcement , 2002 .

[5] A. Ghali,et al. Concrete structures : stresses and deformations : analysis and design for sustainability , 2012 .

[6] Michael P. Collins,et al. Where is Shear Reinforcement Required? Review of Research Results and Design Procedures , 2008 .

[7] Amin Ghali,et al. Two-year deflections of the Confederation Bridge , 2000 .

[8] Michael P. Collins,et al. Safe Shear Design of Large Wide Beams , 2004 .

[9] Mamdouh El-Badry,et al. Alternative Reinforcing Details in Dapped Ends of Precast Concrete Bridge Girders , 2007 .

[10] Amin Ghali,et al. Sustainable Serviceability of Structural Concrete: Control of Deflection and Cracking , 2014 .

[11] Arthur H. Nilson,et al. Design of concrete structures , 1972 .

[12] Zdenek P. Bazant,et al. Creep and Shrinkage Prediction Model for Analysis and Design of Concretetructures: Model B3 , 2000, SP-194: The Adam Neville Symposium: Creep and Shrinkage-Structural Design Effects.