Design and Analysis of a 170 m Span Network Hanger Tied-Arch Bridge

Abstract

Based on the 170 m span network hanger tied-arch bridge of the Guangming Road Guohe Bridge in Bozhou city, structural design and mechanical characteristic analysis are carried out in this study to address the problems associated with traditional vertical hangers in medium-to-large span tied-arch bridges, namely, their susceptibility to slackness, insufficient stiffness, and inadequate stability. The main bridge is a single-span 170 m network hanger tied-arch bridge. The main girder is a double-box steel-concrete composite girder, and the arch rib is an octagonal steel box section without transverse bracing. The hangers are arranged in a crossed network pattern, and the substructure adopts a friction pendulum seismic isolation system. Static, stability, and seismic calculations are performed using the finite element method. The results show that the network hangers can significantly improve the internal force distribution of the main girder and arch rib, reducing both bending moments and deflections. The structural stiffness and stability satisfy the code requirements. The seismic isolation design effectively reduces the seismic response of the piers, and the seismic performance meets the relevant standards. This bridge type demonstrates good technical feasibility and economic rationality for wide urban bridges with spans of 150-200 m and can serve as a reference for similar projects.

Keywords

network hanger / tied-arch bridge / steel-concrete composite girder / structural design / mechanical analysis / seismic isolation

Conflict of Interest Statement

The authors declare that there is no conflict of interest regarding the publication of this paper.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

References

[1] Zhang, D.; Zhou, W.; Luo, D.; Sun, H.; Shao, C. Design of 208 m-Span Network Tied-Arch Bridge of Wusong River Project. Bridge Construction 2025, 55, 134-140, doi:10.20051/j.issn.1003-4722.2025.03.018. (in Chinese)

[2] Shao, C. Modern Arch Bridge; China Communications Press: Beijing, 2021.

[3] Shao, C. Cable supported composite bridges; China Communications Press: Beijing, 2017.

[4] Liu, Z.; Lu, Z. Comparative Study on the Tied-Arch Bridges with Vertical and Inclined Hangers. China Civil Engineering Journal 2000, 33, 63-67, doi:10.3321/j.issn:1000-131X.2000.05.011. (in Chinese)

[5] Lin, Y.; He, C.; Ren, S.; Lu, Y. Network Tied Arch Bridge--An Economical and Pretty Bridge Type. Structural Engineers 2006, 22, 1-4, doi:10.3969/j.issn.1005-0159.2006.05.001. (in Chinese)

[6] Wang, Y.; Liu, K.; Xiu, J.; Hu, Q. Design of Long-Span Network Arch Bridge with Hangers in Mountainous Areas and Analysis of Key Parameter Influences. Highway 2021, 66, 124-127. (in Chinese)

[7] Zhang, D.; Chen, L.; Zhang, C.; Chang, F. Overall Design of Jinli Bridge in Quanzhou. World Bridges 2025, 53, 8-14, doi:10.20052/j.issn.1671-7767.2025.02.002. (in Chinese)

[8] Chen, C.; Wu, X.; Liu, X.; Zhu, Y. Overall Design of a Basket-Handle Arch Bridge with Steel Box Arch Ribs of Large Inclination Angle. World Bridges 2024, 52, 13-18, doi:10.20052/j.issn.1671-7767.2024.01.003. (in Chinese)

[9] Chen, W.; Yuan, W.; Yang, H. Application of the Cable-sliding Friction Aseismic Bearing in a Tied-arch Bridge. Structural Engineers 2013, 29, 84-90, doi:10.3969/j.issn.1005-0159.2013.05.014. (in Chinese)