Temperature is one of the important reasons causing cracks on bridge structure during construction and operation. In this paper, temperature field produced by hydration heat early thermal stress a 64 m simply supported channel-box girder are simulated casting process, considering time-varying characteristics concrete shrinkage creep, elastic modulus, tensile strength. Then, various parameters i...

In the construction of large-tonnage box girder, load girder transport is generally greater than operating in highway industry; therefore, it a crucial task to carry out accurate simulation and optimization on bearing girder. For this purpose, refined modeling method 40 m/1270t studied first paper, followed by detailed stress analysis considering impact coefficient vehicles most unfavorable con...

R f search has produced two major procedures for assessing creep and shrinkage; the ACI 209 method' and the CE$-FJP method.' Laboratory research into concrete creep and shrinkage has been conducted for decades, and excellent analytical procedures for evaluating structures for creep and shrinkage have been presented in the literature.'-5 Creep and shrinkage are factors in the design of a variety...

Abstract Large-scale construction of transport infrastructure inevitably includes the new bridges. During design process, many assumptions and simplifications are taken into account. Therefore, verification structural response bridges is necessary. One possible tests a proof-load test which can detect certain problems investigated structures. The paper introduces numerical experimental analysis...

Bridge designs are becoming slender and lighter, making wind dynamic effects even more important than static effects. Some types of bridges show especially vulnerable situations during construction stages, when the structure is lighter or does not have its final stiffness. The aim this document to assess loading on simple girder their phases. studied section formed by two steel beams supporting...