加固及提高荷载等级后的钢筋混凝土系杆拱桥荷载试验研究

Research on the Load Test of Reinforced Concrete Tied Arch Bridge after Strengthening and Improving Load Level

文章针对某中承式钢筋混凝土系杆拱桥,通过荷载试验对其在加固、提高荷载等级且运营多年的条件下,评定其整体承载能力、工作性能及运营安全性。研究发现,该桥整体结构受力符合设计荷载公路-Ⅱ级,人群荷载3.5 kN/m^(2)的要求,但吊杆横梁的修复工作须及时进行。

Aiming at a half-through reinforced concrete tied arch bridge,this paper evaluates its overall bearing capacity,working performance and operation safety under the condition of strengthening,improving load level and operating for many years through load test.Research has found that the overall structural stress of the bridge meets the requirements of the design load highway levelⅡand pedestrian load of 3.5 kN/m^(2),but the repair work of the hanger rod and transverse beam must be carried out in time.