Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Cable-stayed bridge steel girder stress-free manufacturing linear calculation method
The invention discloses a cable-stayed bridge steel main beam stress-free manufacturing linear calculation method. The method comprises the steps that in the forward installation calculation process, a segment installation method is adopted for installation of current n beam segments; according to the set construction working condition sequence, cable force tensioning or cable length tensioning is adopted for current forward installation calculation, and the current finished bridge state is obtained; when the finished bridge main beam line shape and the finished bridge cable force calculated by the current forward assembly do not meet the convergence condition, correcting the coordinate of a node i when the main beam is installed according to the difference value between the coordinate of the node i of the main beam after the current forward assembly calculation and the coordinate of the node i in the designed finished bridge main beam line shape; according to the space position of the beam section of the installation line during the last round of forward installation calculation, the manufacturing unstressed beam length and the beam section manufacturing included angle of each beam section are obtained through calculation, and then the manufacturing line shape of the main beam is determined. In the calculation process, both cable force tension and cable length tension can be adopted for calculation, the precision is high, and the applicability is high.
本发明公开的一种斜拉桥钢主梁无应力制造线形计算方法，包括在正装计算过程中采用节段安装法进行当前n梁段的安装；按照既定施工工况顺序，采用索力张拉或索长张拉进行当前次正装计算，得到当前成桥状态；当当前次正装计算的成桥主梁线形和成桥索力不满足收敛条件时，根据当前次正装计算成桥后主梁结点i的坐标与设计成桥主梁线形中结点i的坐标的差值对主梁安装时的结点i的坐标进行修正；根据最后一轮正装计算时安装线形的梁段空间位置计算得到各梁段的制造无应力梁长和梁段制造夹角，进而确定主梁的制造线形。本发明在计算过程中既可采用索力张拉，又可采用索长张拉进行计算，精度高，适用性强。
Cable-stayed bridge steel girder stress-free manufacturing linear calculation method
The invention discloses a cable-stayed bridge steel main beam stress-free manufacturing linear calculation method. The method comprises the steps that in the forward installation calculation process, a segment installation method is adopted for installation of current n beam segments; according to the set construction working condition sequence, cable force tensioning or cable length tensioning is adopted for current forward installation calculation, and the current finished bridge state is obtained; when the finished bridge main beam line shape and the finished bridge cable force calculated by the current forward assembly do not meet the convergence condition, correcting the coordinate of a node i when the main beam is installed according to the difference value between the coordinate of the node i of the main beam after the current forward assembly calculation and the coordinate of the node i in the designed finished bridge main beam line shape; according to the space position of the beam section of the installation line during the last round of forward installation calculation, the manufacturing unstressed beam length and the beam section manufacturing included angle of each beam section are obtained through calculation, and then the manufacturing line shape of the main beam is determined. In the calculation process, both cable force tension and cable length tension can be adopted for calculation, the precision is high, and the applicability is high.
本发明公开的一种斜拉桥钢主梁无应力制造线形计算方法，包括在正装计算过程中采用节段安装法进行当前n梁段的安装；按照既定施工工况顺序，采用索力张拉或索长张拉进行当前次正装计算，得到当前成桥状态；当当前次正装计算的成桥主梁线形和成桥索力不满足收敛条件时，根据当前次正装计算成桥后主梁结点i的坐标与设计成桥主梁线形中结点i的坐标的差值对主梁安装时的结点i的坐标进行修正；根据最后一轮正装计算时安装线形的梁段空间位置计算得到各梁段的制造无应力梁长和梁段制造夹角，进而确定主梁的制造线形。本发明在计算过程中既可采用索力张拉，又可采用索长张拉进行计算，精度高，适用性强。
Cable-stayed bridge steel girder stress-free manufacturing linear calculation method
一种斜拉桥钢主梁无应力制造线形计算方法
CHEN CHANGSONG (Autor:in) / YAN DONGHUANG (Autor:in) / LI RUIXIANG (Autor:in) / FU YAJUN (Autor:in) / CHEN SIMING (Autor:in) / LING LIHUA (Autor:in) / HUANG GEN (Autor:in)
29.04.2022
Patent
Elektronische Ressource
Chinesisch
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