Research on the Stress Distribution Law and Calculation Model of the Anchoring Zone in the Cable Tower of Short Pylon Cable-stayed Bridge
Based on a cable-stayed bridge with a low pylon,the stress distribution law in the anchoring area of pylon is studied through field tests,and the stress variation characteristics of concrete in the anchoring area of pylon are determined.A local finite entity model with elastic support at the bottom is proposed,and the feasibility of the model is verified by comparing the measured and theoretical values.The results show that tensile stress occurs at the end of the anchoring area of the cable tower during construction,with the maximum value of 1.2 MPa,and the transverse reinforcement should be added to the end of the anchoring area during construction.The transverse stress of the concrete in the anchoring area of the cable tower is small at the end and large in the middle.The measured stress in the anchoring area of the cable tower is basically consistent with the theoretical value,which verifies the feasibility of the calculation and analysis model for the stress analysis in the anchoring area of the cable tower,and provides technical support for the stress analysis in the anchoring area of the cable tower.
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