Bearing capacity design method for prestressed concrete structure
A concrete structure and design method technology, applied in truss structures, calculations, special data processing applications, etc., can solve the problems that it is difficult to determine the influence of columns, walls, and tubes on the design and calculation results
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Specific embodiment one:
[0040] The bearing capacity design method of the prestressed concrete structure of the present embodiment is implemented by the following steps:
[0041] Step 1: Judge the concrete structure. If the concrete structure is determined to be a concrete structure with an infinite side structure, then perform the methods in steps 2 to 6, and if the concrete structure is determined to be a concrete structure with a finite side structure, proceed Calculation of Step 2 to Step 7;
[0042] Step 2: Calculate the cross-sectional area A of the longitudinal prestressed tendons in the tension zone p ;
[0043] Step 3: Determine the end preload caused by the tension prestressed tendons and the bending moment value M of the control section under the action of the equivalent load in the span p , And determine the design value M of the bending moment of the load outside the control section load , So as to calculate the sum of the bending moment value of the control section and...
Example Embodiment
Specific implementation manner two:
[0069] The difference from the first embodiment is that the load-bearing capacity design method of the prestressed concrete structure of this embodiment, the cross-sectional area A of the longitudinal prestressed tendons in the tension zone in step two p The specific method of determination:
[0070] First, determine the thickness of the prestressed tendon protective layer according to the construction building code, and determine the prestressed tendon line type according to the load type;
[0071] Then, the cross-sectional area A of the prestressed tendons is calculated by the crack control equation p1 , And then calculate the cross-sectional area A of the prestressed tendons through the deformation control equation p2 , Take the cross-sectional area A of the prestressed tendons p1 And the cross-sectional area A of the prestressed tendons p2 The larger of the two is used as the cross-sectional area A of the prestressed tendons p .
Example Embodiment
Specific implementation manner three:
[0072] The difference from the first or second embodiment is that the load-bearing capacity design method of the prestressed concrete structure of this embodiment, the concrete structure of the limited side structure in step 7 is a prestressed concrete frame structure, a prestressed concrete slab-column structure, One of the vertical components of prestressed concrete high-rise structures—columns, shear walls, and cylinders.
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