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TENGHAI
25
2020
-
04
Calculation of tension of steel strand
The construction design idea of the prestressed tension engineering is the tensile strength of the controlled tension, which refers to the tension of the steel strand in front of the anchorage device after prestressing.
The construction design idea of the prestressed tension engineering is the tensile strength of the controlled tension, which refers to the tension of the steel strand in front of the anchorage device after prestressing.
Therefore, when calculating the theoretical extension of the prestressed tensile foundation of the steel hinge line, the distance between the anchoring points on both sides of the steel hinge line should be used as the length of the calculated steel hinge line, but the manipulation of the steel hinge line under the prestressed state controls the tensile force at the anchor point of the hydraulic jack tool.
Therefore, in order to facilitate the operation and calculation, the distance between the anchor points on both sides of the steel hinge line and the length of the steel hinge line are usually used as a method to calculate the theoretical extension of the steel strand. Steel hinge wire length of prestressing.
When prestressing is applied to the strand, the exposed part of the strand is mostly wrapped by anchors and hydraulic jacks. The prestress extension of the steel hinge line cannot be immediately and accurately measured on the steel hinge line, so the prestress extension of the steel hinge line can be measured only by accurately measuring the stroke arrangement of the piston rod of the tensioning jack.
However, together, the number of anchor bolts retracted during the prestressing process of the hinge wire should be reduced. The bearing capacity of the steel hinge line should be 4-6 times the total driving force. You can select the right steel strand based on this data and determine the specifications of the steel strand!
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