The Force And Stable Properties Of T-beam Continuous Rigid Frame Bridges

With the development of science and the improvement of the suspend capacity，therehas been a noticeable trend in the enlargement of span range and the standardization ofmedium and small一span bridge design and simply supported continuous prestressedconcrete bridges are widely used nowadays.But the test researches and the wholeloading process analysis on the simply supported continuous prestressed concretebridges both inland and overseas are relatively laggard，which has stunted the healthydevelopment of this type of bridge badly.According to the specific examples of suchbridge type,detailed test analysis and theoretic research are done.And the primaryachievements are listed as follows.①Aiming at T beam simply-supported continuous rigid frame bridge in Midas/Civilgrillage analysis and study,, the spatial mechanical properties and overall mechanicalproperties of T beam simply-supported continuous rigid frame bridge are studieddetailedly in two structures form of consolidation and non-consolidation pier beams, theresults indicate that T beam simply-supported continuous bridge reflect significantspatial effect in partial loads, while pier beam consolidation of the T beamsimply-supported continuous rigid frame bridge has a certain extent effect, spatialeffects are smaller.②Aiming at the key construction process existing differences of ends pouringconsecutive order,continuous prestressed tension sequence and the removal oftemporary support order,T beam simply-supported continuous rigid frame bridgeTypical model is exampled to study the T beam stress, deflection with the variation atthe key points in construction process in method of Midas/Civil grillage analysis, itidentified the optimal construction process for the bridge construction.③Study and discuss the bridge stability coefficient linear elastic analysis method, anda typical5T beam span continuous rigid frame bridge in the background, its a bridgefrom the construction phase to the stability of the entire process analysis, detailedanalysis of the different conditions of the bridge stability factor, and with the T beamcontinuous beam bridge to do comparison, verification using high pier bridge pier beam consolidation of the structure has stiffness, stability coefficient higher significantadvantages.