Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for finding feasible prestress of cable-pole structure
The invention provides a method for finding feasible prestress of a cable-pole structure. The method comprises the steps that an analysis model including a load F, a prestress initial value P*, a calculation error epsilon n and a displacement calculation error epsilon d is established, a Newton iterative formula is established according to a fuzzy expression between the input value P of the prestress and the output value N of unit internal force and is used for iterative calculation on the prestress P until the error requirement is met; whether the feasible prestress of the cable-pole structure is found out or not and whether reasonable updating needs to be conducted on structure geometry are judged according to the structure self-stress modal number, the internal force of a cable and a pole and the displacement of the structure, during geometry updating, the structure deformation under the prestress P and the load F is directly stacked to an original geometry to be conducted, and the prestress iteration and geometry updating are circularly conducted until all index requirements are met. According to the method, in the process of finding the feasible prestress of the cable-pole structure, reasonable geometry updating can be conducted, and the load possibility of the structure can be taken into consideration.
Method for finding feasible prestress of cable-pole structure
The invention provides a method for finding feasible prestress of a cable-pole structure. The method comprises the steps that an analysis model including a load F, a prestress initial value P*, a calculation error epsilon n and a displacement calculation error epsilon d is established, a Newton iterative formula is established according to a fuzzy expression between the input value P of the prestress and the output value N of unit internal force and is used for iterative calculation on the prestress P until the error requirement is met; whether the feasible prestress of the cable-pole structure is found out or not and whether reasonable updating needs to be conducted on structure geometry are judged according to the structure self-stress modal number, the internal force of a cable and a pole and the displacement of the structure, during geometry updating, the structure deformation under the prestress P and the load F is directly stacked to an original geometry to be conducted, and the prestress iteration and geometry updating are circularly conducted until all index requirements are met. According to the method, in the process of finding the feasible prestress of the cable-pole structure, reasonable geometry updating can be conducted, and the load possibility of the structure can be taken into consideration.
Method for finding feasible prestress of cable-pole structure
GUO JIAMIN (Autor:in) / GUO XIAOQING (Autor:in) / JIANG JIQING (Autor:in) / YUAN YUAN (Autor:in) / GUO JUNHUA (Autor:in) / ZHENG TAOQING (Autor:in) / HUANG JINGJING (Autor:in)
30.09.2015
Patent
Elektronische Ressource
Englisch
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