Results 141 to 150 of about 380 (177)
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Analysis of Prestressing Loss on Construction of External Prestressed Wooden Buildings
Advanced Materials Research, 2012Wooden buildings which has a long history, is one of the earliest forms of building structures by mankind.The structure form and construction method of are different from the common prestressed structure,therefore,the prestressing loss caused by the external prestressed structures is different from that of the common prestressed structure.It is an ...
Ji Mei Zhang +2 more
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Applying Prestressed CFRP Sheets to Restore Prestress Losses in Prestressed Concrete Beams
SP-245: Case Histories and Use of FRP for Prestressing Applications, 2007This paper has described how the issue of the rehabilitation of damaged structures has attracted the attention of researchers in order to resolve the undesired problems caused by increased traffic loads, corrosion, or impact damage. Appropriate methods are therefore essential for extending the lifespan of the structures and the application of carbon ...
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Loss Of Prestress In Pretensioned Prestressed Concrete Beams.
1964PhD ; Civil engineering ; University of Michigan, Horace H. Rackham School of Graduate Studies ; http://deepblue.lib.umich.edu/bitstream/2027.42/183771/2/6412657 ...
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The effect of prestress losses on the seismic response of prestressed concrete frames
Computers & Structures, 1996An analytical model for predicting the dynamic response of prestressed concrete frames was presented recently. According to this model, the effect of prestress losses on the seismic response of prestressed concrete frames is studied in this paper. The results indicate that the ductility factor and ductility demand increase with decreasing prestress ...
Mo, Y. L., Hwang, W. L.
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Recommendations for Estimating Prestress Losses
PCI Journal, 1975This PCI Committee report summarizes data on creep and shrinkage of concrete and steel relaxation, and presents both a general and a simplified design procedure for using these data in estimating loss of prestress after any given time period. A Commentary explains the design provisions.
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Prestress Losses in Continuous Composite Bridges
PCI Journal, 1986D uring the last 30 years composite construction of concrete slab-on-steel girders has been widely used to form the superstructure of bridges. Generally, such construction has been applied only to simple spans or to the sagging moment regions of continuous spans since transverse cracks will inevitably develop in the region of intermediate supports ...
Mohamed H. Soliman, John B. Kennedy
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1973
Gives a producer-oriented overview of prestress losses. Contains test results and analyses, methods of reducing such losses, and a discussion of future priorities of producer-conducted investigations and input to codes.
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Gives a producer-oriented overview of prestress losses. Contains test results and analyses, methods of reducing such losses, and a discussion of future priorities of producer-conducted investigations and input to codes.
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Estimation Method for Prestress Loss of Externally Prestressed Composite Girder Bridges
Advanced Materials Research, 2014To accurately calculate the prestress of externally prestressed composite girder bridges, the six critical factors (the prestressing tendon withdrawal and anchor deformation, friction between prestressing tendon and deviator, prestressing tendon relaxation, concrete creep, concrete shrinkage and temperature changes) that cause the prestress loss of ...
Yong Ming Zhao +2 more
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Exploratory Experimental Study on Fatigue Prestress Loss of Prestressed Concrete Beams
Journal of Highway and Transportation Research and Development (English Edition), 2014To study the fatigue prestress loss of prestressed concrete beams, four bonded post-tensioned bonded concrete simple supported beams were designed and constructed for constant-amplitude fatigue load displacement tests. Strain sensors were embedded into the pre-pressed zone of the mid-span of the simply supported concrete test beams, and the fatigue ...
Ding Zeng +3 more
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Prediction of Long-Term Prestress Losses
PCI Journal, 2007This paper presents an analytical method to predict long-term prestress losses in precast, pretensioned, or posttensioned concrete members. Design aids are presented for cast-in-place, posttensioned concrete bridges. The proposed method is based on equilibrium and compatibility principles of solid mechanics and can be used for multistage loading and ...
Samer A. Youakim +3 more
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