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Study on sling replacement of concrete-filled steel tube arch bridge

Zhang Kexin, Qi Tianyu, Xue Xingwei, Li Yanfeng, Zhu Zhimin

Archives of Civil Engineering

2021

Vol. 67, nr 2

597--610

Concrete-filled steel tube arch bridge is filled with concrete inside the steel tube. The radial constraint of the steel tube limits the expansion of the compression concrete, which makes the concrete in the three-way compression state, thus significantly improving the compressive strength of the concrete. At the same time, it can simplify the construction process and shorten the construction period. Since the rapid development of concrete-filled steel tubular tied arch bridge in the 1990s, a large number of such Bridges have suffered from the defects of steel concrete, loose tie rod, and hanger rod rust, etc. Therefore, the reinforcement technology for various diseases has been studied, among which the reinforcement technology for hanger rod replacement is the most complicated and more difficult. As more and more bridges of this type enter the period of reinforcement, it is more and more urgent to study the reinforcement technology of suspenders. Taking a bridge that has been in service for 23 years as an example, this paper discusses the construction method and construction monitoring of replacing the suspender, so as to guide the construction monitoring of the bridge. Finally, the construction monitoring results of the bridge are given, which can provide reference for the replacement of the suspender of this type of bridge.

Projekt samozakleszczającego się zawiesia żurawia samochodowego

Budniak Z., Chudy J., Jasiukajtis Ł., Wojcieszak S.

Autobusy : technika, eksploatacja, systemy transportowe

2012

R. 13, nr 5

56-62

W artykule omówiony został projekt samozakleszczającego się zawiesia wykorzystywanego do przeładunku towarów o gabarytach od 275 mm do jednego metra oraz o masie maksymalnej wynoszącej 6800 kg. Zawiesie to umożliwia jednoosobową obsługę przy wyładowywaniu ładunków ze skrzyni ładunkowej samochodu.

The article is describing the project alone jamming oneself sling along with analysis of stresses of Messes. they carried out a project with 3D model with the SolidWorks 2010 program.