Summary:The construction content includes the bridge superstructure and ancillary facilities.
New progress has been made in upgrading the urban heavy haul transport infrastructure in Shanghai.The reporter learned from the municipal road transportation center that since 00:00 on May 18, the repair and maintenance project of Taihe Road Viaduct of S20 Outer Ring Expressway has implemented the overhaul construction of half closed traffic. Nearly a month after the closure, it has now entered the overhaul construction stage of the upper main structure.The outer circle construction is expected to be completed in October 2024, and the inner circle construction is expected to be completed in March 2025.
The S20 Outer Ring Taihe Road Viaduct is located in the North Outer Ring Road section of Shanghai Outer Ring Expressway, which is connected to Yunchuan Flyover in the west and Outer Ring Tunnel in the east. It has long served as the transit function of freight vehicles in the North Outer Ring Road. Tongji Road Flyover is set in the road section, which can be converted to Yixian Road Viaduct and Tongji Road Viaduct.
It was completed and opened to traffic in 2001, and has been in operation for 22 years. Due to the long-term impact of heavy traffic, the bridge has suffered from various degrees of disease.Based on the window period when the S20 outer ring tunnel is closed and overhauled, the overall road flow decreases, and the number of heavy vehicles decreases, relevant parties will repair and maintain the S20 outer ring expressway Taihe Road viaduct, including the bridge superstructure and ancillary facilities.
The main line of the repair and maintenance project is 4065m long and involves 3 ramps (Jiangyang North Road upper ramp, lower ramp and Tongji Road lower ramp).The reporter saw at the scene that the old asphalt of the viaduct deck was being milled, and the new and old plate beams were also being replaced in succession.
Zhang Yi, Site Project Manager of Tunnel Stock Shanghai Road and Bridge Co., Ltd., introduced that the construction method of "half construction, half guarantee" was adopted for the project. The outer circle was overhauled first, and then the inner circle was overhauled.Considering that there are mainly factories and some residential areas along Taihe Road, construction operations with certain noise impact, such as bridge deck pavement demolition, are arranged in the daytime, and the demolition of old bridge deck beams is mainly arranged at night.
It is understood that in order to reduce the travel impact of the project construction on the citizens, Tongji/Outer Ring Interchange South West SW Ramp, Tieli Road Ramp and Tongji Road Down Ramp will be converted by setting temporary bridges for social vehicles to pass through the strictly divided construction area.
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