Disease concrete bridge bearing capability evaluation method
A technology of bearing capacity and concrete, which is applied in the field of bearing capacity assessment of diseased concrete bridges, and can solve the problems of inaccurate assessment results of assessment grade division and assessment results
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Embodiment 1
[0086] Embodiment 1: The method for evaluating the bearing capacity of a diseased concrete bridge of the present invention is applied to the checking and evaluation of the bearing capacity of a simply supported hollow slab bridge with a disease in service. The general situation of the bridge with the disease is as follows: the standard span is 12m, the total length of the hollow slab is 11.96m, the cross-sectional schematic diagram of the upper structure and the mid-span section size and reinforcement of the hollow slab, such as Figure 12 with Figure 13 As shown, the design strength of concrete is C25, the main reinforcement adopts grade II reinforcement, and the design bearing capacity M is calculated after review. 0 =502.4kN·m.
[0087] According to the content of the present invention, this bridge is carried out bearing capacity evaluation, and concrete process is as follows:
[0088] (1) The typical disease index U of the concrete bridge to be detected by conventional ...
Embodiment 2
[0131] Embodiment 2: The method for evaluating the bearing capacity of a diseased concrete bridge of the present invention is applied to the checking and evaluation of the bearing capacity of a diseased T-beam bridge in service. The basic situation of the T-beam bridge with disease in service: it is a 3-hole 20m prefabricated reinforced concrete simply supported T-beam, the cross-section of the superstructure and the main beam reinforcement diagram are as follows Figure 14 with Figure 15 As shown, the concrete design strength is C25, and the main reinforcement adopts grade Ⅱ steel reinforcement. After reviewing the original section design bearing capacity M 0 =2196.57kN·m.
[0132] Carry out bearing capacity assessment to this bridge according to content of the present invention, concrete process is as follows:
[0133] (1) Using the conventional bridge disease detection method, statistical analysis is used to obtain the disease index of the T-beam bridge in service u i...
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