This leads to the development of a unified formula for predicting the average crack widths in reinforced and partially prestressed concrete beams. The performance of the proposed formula is checked using the test results, as well as the data published on 76 beams from other laboratory investigations...
It is shown herein that concrete beams may also be prestressed with carbon-fibre-reinforced polymers (CFRP). The test results show that the static fracture behaviour of such beams is almost identical to that of beams prestressed with steel. Not only statically determinate, but also statically ...
Equations developed in an earlier paper for the strength of prestressed beams subjected to bending, torsion and shear are rearranged in a form sutable of design. A design example is included.doi:10.14359/11117B.V.Rangan,A.S.HallAmerican Concrete Institute, Journal of...
Box beams are fabricated with void material using preformed cellular polystyrene that meets the requirements of ASTM-C578, Type 1. Void forms are watertight and resistant to breakage and deformation during concrete placement. Because the void is polystyrene, virtually any size or shape can be accomm...
prestressedconcrete;naturalfrequencies;modelupdating;Bayesmethod;Markovchain— MonteCarloalgorithm;uncertaintyestimation 在预应力混凝土结构建模过程中,常出现不 合理的边界条件、模型阶次误差以及对阻尼的忽 略等问题.有限元模型修正是处理这些问题的常 用方法,通常分为确定性和不确定性方法.确定性 ...
1 引言 全预应力混凝土(full Prestressed Concrete)结构指构件在作用(或荷载)频遇组合下控制截面的受拉边缘不出现拉应力的预应力混凝土结构,其预应力度λ ≥1。部分预应力混凝土(Partially Prestressed Concrete)构件是指其预应力度(λ)介于以全预应
The aim is the prediction of the failure time of prestressed concrete beams under low cyclic load. Since the experiments last long for low load, accelerated failure tests with higher load are conduct...
The prestressed and steel-reinforced concrete slab (PSRCS) is an innovative composite structural member offering high load capacity and stiffness and exceptional anti-crack performance, making it a leading trend in composite structures. This paper presen
The Method and Analysis of the Vertically Ten- sioned Prestressed Concrete Beams[J]. Structural Engineering In- ternational( Journal of IABSE) ,Feb,2004.Zhixiang Zhou,Fang Li,Roy A Imbsen.The Method and Analysis of the Vertically Tensioned Prestressed Concrete Beams[J].Structural Engineering ...
1) prestressed concrete beams 预应力连续梁 1. In this paper,it can be found that the main factors governing moment modulation ofprestressed concrete beamsincludes relative height of equivalent compression zone of supports,prestress secondary moment. ...