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Academic Journal of Engineering and Technology Science, 2024, 7(6); doi: 10.25236/AJETS.2024.070623.

Research on construction technology of "main cables installed ahead of stiffening girder" of self-anchored suspension bridge

Author(s)

Zhang Zefeng

Corresponding Author:
Zhang Zefeng
Affiliation(s)

Shijiazhuang Hongye Transportation Construction Supervision Co., Ltd., Shijiazhuang, Hebei, 050000, China

Abstract

Self-anchored suspension bridge, as a unique structure, beautiful shape and adaptable bridge type, has been widely used in urban and complex terrain bridge construction. In order to improve the overall stability of the bridge, it is proposed to study the construction technology of self-anchored suspension bridge "main cables installed ahead of stiffening girder". Taking a self-anchored suspension bridge construction project in the center of an urban area as an object, a temporary anchorage system is installed, including temporary anchorages and tension cables, to ensure the safety of lifting; inverted lifting, inverted lifting and floating crane technology are used for lifting and loading of large mid-span sections and standard girder segments, which is an innovative method to overcome the construction problems; the construction of the merging system is converted, the temporary anchorage and tension cable are gradually lifted, and the cable strength of the main cables and the suspension rods is fine-tuned, and the second-phase constant load and adjusted cable strength are applied. The second phase constant load was applied and the cable force was adjusted to the design value to ensure the overall performance and safety of the bridge. Finally, the monitoring points are designed to monitor the stress and strain in different areas. The results show that the stress values at the bottom and top of the tower are relatively stable, and the highest stress value is within 350MPa, which proves that the structural strength of the bridge after construction can meet the use requirements.

Keywords

self-anchored suspension bridge; construction technology; main girder lifting; temporary tie

Cite This Paper

Zhang Zefeng. Research on construction technology of "main cables installed ahead of stiffening girder" of self-anchored suspension bridge. Academic Journal of Engineering and Technology Science (2024) Vol. 7, Issue 6: 162-168. https://doi.org/10.25236/AJETS.2024.070623.

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