A Skew Reinforced Concrete Bridge Bearing Capacity Test And Evaluation

In recent years, as China’s increased investment in infrastructure funds, makingour transport undertakings have developed rapidly. Bridge structure load test is carriedout on the bridge structures loaded directly test a scientific experimental work, is anew structural performance of the bridge, the bridge construction quality and structureof various types of bearing capacity of an important means of assessment work, andits purpose is to load test, to understand bridge structure in the test loads actualworking conditions, in order to determine the safety of the bridge structure bearingcapacity and deformation capacity and quality evaluation of the operation of thebridge. For some parts difficult to calculate in theory, can be achieved through loadtesting stress state directly to understand their purpose; through the load test can testthe bridge structure design and construction quality; through the completion of thenew bridge structure and the load test is targeted strong research trials, you can thinkthat the development of bridge design theory and improve the level of constructiontechnology, continue to accumulate technical data and provide a scientific basis.In this paper, Mayong Town, Dongguan City, a new bridge in the background ofbias, a bias reinforced concrete bridge static load test, carried out the following maintasks:Static load test conducted on the bridge. Dr. Bridges uses to calculate thetransverse distribution coefficient proposed test bridges, combined with single-beammodel, when calculated using the plane model, the theoretical analysis of the value ofeach piece of the beam. Using Midas/civil establishment hollow beam lattice modelskew bridge and moving loads applied to identify the moment according to the controlsection of the control when calculating the theoretical moment and deflection of thebeam in this model of each piece. Make lateral distribution curve; combined with theactual test results, the theoretical analysis of the accuracy of the calculation of the twomodels were compared, and an assessment of the carrying capacity of the bridge.Select the appropriate reference model in the actual load test process for the bridge. MIDAS model using dynamic analysis of the bridge, the bridge grid bias wereestablished with a single beam model space model. After the calculated verticalnatural frequency and vibration mode, both models have some commonality. Locatemoment according to the control section of the control when calculating thetheoretical model moment and deflection of the beam at each piece grillage model.Made a lateral distribution curve; grid computing results from the beam space modelplane model point of view, the cross-section of the bridge in the transverse beams foreach of its trend is basically the same. By static load test results indicate that thebridge meets the design requirements.