论文部分内容阅读
一、串联梁产生的历史背景成昆铁路桥梁隧道数量多,工期紧迫,尤其是中段,桥隧相连,仅架梁即需将近一年时间,成为如期通车的主要矛盾之一。因而缩短架梁时间,争取早日全线通车,具有重要意义。为解决桥梁预架设的问题,1965年决定将部分梁体横向分块制造,串联张拉成整体梁。接着进行了串联梁的设计、试制、试验工作,于1966年4月在丰台桥梁厂
First, the historical background of tandem beam Chengdu-Kunming Railway Bridge tunnel number and duration is urgent, especially in the middle, bridge and tunnel connected, just spanning nearly one year, as one of the major contradictions opened to traffic. Therefore, it is of great significance to shorten the time spent on girders and strive for the opening of the entire line as early as possible. In order to solve the problem of pre-erection of bridges, it was decided in 1965 that some of the girders would be manufactured in a horizontal block and be tense in series into an integral beam. Then a series of beam design, trial production, test work, in April 1966 Fengtai Bridge Plant