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早期修建的系杆拱桥,没有考虑吊杆更换,但使用一定年限后,由于吊杆锈蚀、疲劳等原因,吊杆承载能力下降,危及桥梁安全,需要更换吊杆。文章研究了不影响交通情况下系杆拱桥吊杆的更换工艺,对多方案进行了比较,并应用于某桥,证明该工艺安全、方便、费用低,可供同类桥借鉴。
The early construction of tied arch, did not consider the replacement of the boom, but the use of a certain number of years, due to corrosion, fatigue and other reasons, the boom carrying capacity decreased, endangering the safety of the bridge, the need to replace the boom. This paper studies the replacement process of the tie bar boom of the tied arch bridge without affecting the traffic conditions, compares the multiple schemes and applies it to a certain bridge, proving that the process is safe, convenient, low cost and can be borrowed by similar bridges.