遵照毛主席“备战,备荒,为人民”的伟大战略思想和自力更生、勤俭建国的方针,我们去年在某项山区工程建设中经过三结合设计和试验以及反复的修改,在工人同志帮助下,采用了一种新型式的构件——两铰拱空腹梁。从工程建设的实践证明,这种构件与同等条件的其他构件相比,具有节约材料,自重轻、施工简单,吊装方便、安全适用、外观轻巧等优点。到今年初,该项工程的厂房已全部建成投入试 In accordance with Chairman Mao’s “great strategic thinking of preparing for, preparing for waste, and serving the people” and the principle of self-reliance and diligence and the founding of a nation, we adopted three-combined design and experiments and repeated revisions last year in the construction of a certain mountainous area, with the help of workers’ comrades. A new type of component - two-arched open-web beams. From the practice of project construction, it is proved that this kind of component has the advantages of material saving, lighter weight, simple construction, convenient lifting, safe application and light appearance compared with other components with the same conditions. By the beginning of this year, the plant of this project has been completed and put into trial