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我院在1962年遵照鉄基勘武(61)字第1932号部令批准的1961年5月成都桥梁标准設計座談会的决議,对有关鋼筋混凝土梁标准图整編的部份,以及根据1961年《标准軌距鉄路設計技术規范》的有关規定,对A3为主鋼筋的专桥1000及专桥1001(l_p=2.4m~16m及l_p=20m鋼筋混凝土梁)进行了修改与补充而編制成为专桥1009。因此,有A5螺紋鋼筋为主筋的专桥1002及1004(l_p=2.4m~16m,l_p=20m~24m的鋼筋混凝土梁),也有必要进行相应地修改补充,以資配合。同时,从节省鋼料减輕裂紋等情况来看,鋼筋混凝土梁也以采用A 5螺紋鋼筋为宜。故我院于1964年設計了以5螺紋鋼筋为主筋的道碴桥面鋼筋混凝土梁专桥1009 A标准图,經部鉴定委員会批准使用。
Our hospital in 1962 in accordance with the Ji-kai-kun-wu (61) word No. 1932 ministerial approval of the May 1961 Chengdu bridge standard design symposium resolution, the relevant part of the reinforced concrete beam standard diagram reorganization, and according to 1961 Year “standard gauge 鉄 Road Design Technical Specifications” of the relevant provisions of the A3-based special steel reinforced concrete bridge 1000 and 1001 (l_p = 2.4m ~ 16m and l_p = 20m reinforced concrete beams) were modified and supplemented and prepared as Bridge 1009. Therefore, there are A5 rebar reinforcement of the special bridge 1002 and 1004 (l_p = 2.4m ~ 16m, l_p = 20m ~ 24m of the reinforced concrete beam), but also necessary to make appropriate changes in order to match. At the same time, saving steel to reduce the cracks and so on, the reinforced concrete beams to A 5 rebar is appropriate. Therefore, our hospital in 1964 to design a 5-rebar-based Ballast Concrete Ballastless Bridge 1009 A standard figure, approved by the Ministry of appraisal committee.