Study on Concrete Creep Theory Applied in Construction of Continuous Rigid Frame Bridge
|Course||Architecture and Civil Engineering|
|Keywords||Concrete Creep Deflection Construction Control|
The bridge is a complex spatial structure , especially pre-stressed concrete bridge . Deflection control is one of the key success of the construction , cantilever construction , creep deformation and stress caused redistribution is a difficult deflection control . Concrete creep occurs by concrete to suffer load a \losses. Consider the creep deflection calculation of the structure is extremely complex , because it contains a number of factors, including concrete creep and even calculated Precamber before construction should also be calculated data and compared with the design value , thus find the problem. At present , at home and abroad rise construction boom span continuous rigid frame . Span continuous rigid frame construction process , there are some problems to be solved : the the stress measurement value in the construction process generally larger bridge late creep deflection than expected too much shrinkage and creep of the pier top longitudinal obviously biased bit . From shrinkage and creep mechanism , influencing factors and calculate the theoretical aspects of these issues made ??to a certain extent of and effective solution , the summarized method for large -span continuous rigid frame bridge construction to provide a reference .