December 27, 2024
The Mao Port Bridge, part of the Ping-Shen Waterway (Shanghai Section) Renovation Project, is located in Maogang Town, Songjiang District, Shanghai. The project begins west of Zhongxing Road on Yexin Highway and spans a total length of 1,765 meters, crossing Zhongnan Road and the Ping-Shen Waterway. The main bridge, a 110+225+110m cable-stayed structure with a parallel single-plane steel tower and steel box girder, features a tower-beam consolidation and tower-pier separation system. The bridge has a deck width of 38.5m and is designed as a first-class highway with a 100-year service life.
IEC’s Innovative Seismic Design:
· The main piers utilize 100 MN spherical bearings (equivalent to 10,000 tons) combined with oversized laminated rubber bearings (2.0×2.5m), forming a composite seismic system.
o Spherical bearings primarily handle load-bearing functions.
o Laminated rubber bearings provide energy dissipation, seismic mitigation, and post-earthquake self-centering.
In Apr. 2018, IEC participated as a co-developer of the “Bridge Composite Seismic Technology Specification,” led by the Shanghai Municipal Engineering Design Institute. From the early design stage, IEC was heavily involved, contributing to multiple technical exchanges and proving its comprehensive production and quality capabilities through factory assessments. IEC was ultimately selected as the supplier for the project’s bearings.
This project builds on IEC’s prior successes, including the 90 MN cable damper bearings for the Minjiang Bridge on Provincial Highway 308 in Sichuan. Winning this contract highlights the industry’s recognition of IEC’s technological innovation and overall strength.
