跨度16m低高度先张法部分预应力混凝土梁:A类——正截面混凝土容许受拉,但不容许开裂,由专业设计院、铁一局(科研所、华县预制厂)、长沙铁道学院共同承担;B类——正截面混凝土容许开裂并控制裂纹宽度,由铁科院、铁三院、北方交大,房山桥梁厂共同承担。近两年来已基本完成有关材料、模拟梁以及实体梁的静载破坏性试验工作,即将架设并 Span 16m low height pre-tensioned partially prestressed concrete beam: Class A - normal cross-section concrete to allow tension, but not allowed to crack by the Professional Design Institute, a Bureau of Iron (Institute, Huaxian Prefabricated Factory), Changsha Railway Institute Shared; Class B - is the cross-section of concrete to allow cracking and crack width control, by the ASTRI, the Third Hospital, North Jiaotong University, Fangshan Bridge plant shared. Nearly two years has basically completed the relevant materials, simulated beam and solid beam static load destructive testing, is about to erection