A bridge is a structure providing passage over an obstacle without closing the way beneath. The required passage may be for a road, a railway, pedestrians, a canal or a pipeline. Now a days, bridge deck section of Box shapes are used widely. Most of the bridges constructed are of Box girders. Method of post-tensioning in the construction of bridges is very common today. Most of the bridges are ...

Stainless steel reinforcing has an elevated chloride threshold and is an attractive alternative for prestressed concrete applications. However, due to the high strength requirements for prestressing strands, concern exists about the possibility of stress corrosion cracking (SCC). This investigation screened for potential SCC development three candidate high strength alloys for use as prestresse...

Prestressed structure, getting reaction force from additional air-container, is called as Air-prestressed structure in this report. The aim of report to investigate fundamental mechanical properties the axial direction, such elasticity and loading capacity, through vertical test, air-prestressed cylindrical structure. Three prototypes, having different size specifications, are tested results re...

For non destructive stress evaluation in prestressed concrete, we describe in this paper a promising ultrasonic method. In "ordinary" isotropic homogeneous materials such as steel, ultrasonic determination of third order elastic constants provides means for stress evaluation since half a century. Acoustoelasticity is aimed at measuring ultrasonic velocity changes at progressively increasing app...

This paper deals with the economic optimization of prestressed concrete precast pedestrian bridges typically used in public works construction. These bridges are made of a precast concrete beam that integrates an upper reinforced concrete slab for the pedestrian traffic. The beam has a U-shape cross-section. Typical span lengths range from 20 to 40 m and the width ranges from 3.00 to 6.00 m. Th...

RESEARCH ARTICLE The Elastic Critical Load of Single Angle Columns Ailin Zhang, Qingfang Zhang and Chao Sun College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China Beijing Engineering Research Center of High-Rise and Large-Span Prestressed Steel Structure, Beijing 100124, China School of Civil Engineering, Shijiazhuang Tiedao University, Shijiazhua...

Free vibration analysis of prestressed, homogenous, Fiber-Metal Laminated (FML) and composite beams subjected to axial force end moment is revisited. Finite Element Method (FEM) frequency-dependent Dynamic (DFE) models are developed presented. The frequency results compared with those obtained from the conventional FEM (ANSYS, Canonsburg, PA, USA) as well Homogenization (HM). Unlike FEM, applic...

Prestressed construction technology has greatly developed in recent years, and related supporting facilities are constantly being improved. Therefore, prestressed been widely used roads bridges, which improved the efficiency of highway bridge overall quality. However, there still some problems application bridges. Only by controlling quality can effect bridges be guaranteed.