From "Drip Water Bridge" To "Rainbow Corridor": The Technological Magic in The "Metamorphosis" of Shushan Tianqiao.

In Shushan District, Hefei City, 12 pedestrian overpasses including Feixi Road Bridge, Dongzhi Road Bridge, and Tian'ehu Road Bridge have recently undergone a collective "renovation". The mottled bridge deck and rusted guardrails are covered with environmentally friendly paint, and the weather resistant adhesive filled in the joints of the bridge body is like "invisible armor" to resist rainwater erosion.

This "Bridge Beauty Action" led by the Shushan District Urban Management Bureau targeted 27 "minor diseases" found during inspections, such as glass leakage and blocked drainage holes on the top of overpasses.

The municipal department uses weather resistant adhesive technology to repair the top leakage, allowing citizens to bid farewell to the problem of dripping water on rainy days. Not only does it allow citizens to bid farewell to the embarrassment of "tiptoeing across bridges" on rainy days, but through the innovative application of weather resistant adhesive, it provides a dual solution of "technology+precision" for urban infrastructure management and maintenance.

PART-01

Pain point | "Overpass crisis" exposed by a rainstorm 

The daily average load of overpasses with large pedestrian flow in Shushan District exceeds 30000 person times, and they face three major challenges in the long run:

1. The frequent occurrence of "minor diseases" on the bridge deck has led to problems such as glass leakage and blockage of drainage holes on the top of the bridge, resulting in water accumulation and leakage during rainy days. There were 26 complaints related to the 2024 flood season.

2. The lifespan of expansion joints is short. Traditional sealing materials are prone to aging and cracking. The underground passage of Pihe Road once had concrete peeling due to water seepage from expansion joints, and maintenance required sealing the bridge deck for several days.

3. The imbalance between landscape and function has led to rusting and coating peeling of the pedestrian bridge guardrails, which affects the city's image.

The expansion joint of Zhengyang East Road Bridge failed to seal, and rainwater seeped into the structural layer of the bridge, causing steel corrosion and maintenance costs exceeding 80000 yuan.

PART-02

Technological breakthrough | "triple protection" of weather resistant adhesive. 

Shushan District has introduced weather resistant adhesive in its renovation, which has become a "bridge guardian" with three major characteristics:

In Shushan District, Hefei City, 12 pedestrian overpasses including Feixi Road Bridge, Dongzhi Road Bridge, and Tian'ehu Road Bridge have recently undergone a collective "renovation". The mottled bridge deck and rusted guardrails are covered with environmentally friendly paint, and the weather resistant adhesive filled in the joints of the bridge body is like "invisible armor" to resist rainwater erosion.

This "Bridge Beauty Action" led by the Shushan District Urban Management Bureau targeted 27 "minor diseases" found during inspections, such as glass leakage and blocked drainage holes on the top of overpasses.

The municipal department uses weather resistant adhesive technology to repair the top leakage, allowing citizens to bid farewell to the problem of dripping water on rainy days. Not only does it allow citizens to bid farewell to the embarrassment of "tiptoeing across bridges" on rainy days, but through the innovative application of weather resistant adhesive, it provides a dual solution of "technology+precision" for urban infrastructure management and maintenance.

PART-01

Pain point | "Overpass crisis" exposed by a rainstorm 

The daily average load of overpasses with large pedestrian flow in Shushan District exceeds 30000 person times, and they face three major challenges in the long run:

1. The frequent occurrence of "minor diseases" on the bridge deck has led to problems such as glass leakage and blockage of drainage holes on the top of the bridge, resulting in water accumulation and leakage during rainy days. There were 26 complaints related to the 2024 flood season.

2. The lifespan of expansion joints is short. Traditional sealing materials are prone to aging and cracking. The underground passage of Pihe Road once had concrete peeling due to water seepage from expansion joints, and maintenance required sealing the bridge deck for several days.

3. The imbalance between landscape and function has led to rusting and coating peeling of the pedestrian bridge guardrails, which affects the city's image.

The expansion joint of Zhengyang East Road Bridge failed to seal, and rainwater seeped into the structural layer of the bridge, causing steel corrosion and maintenance costs exceeding 80000 yuan.

PART-02

Technological breakthrough | "triple protection" of weather resistant adhesive. 

Shushan District has introduced weather resistant adhesive in its renovation, which has become a "bridge guardian" with three major characteristics:

1. Elastic adaptation and crack resistance "black technology". In the maintenance of glass on the top of the overpass, construction personnel adopt the process of "base cleaning → primer treatment → multi-layer joint filling" to ensure that the adhesive strength between the colloid and concrete reaches 2.8MPa. The actual measurement in the flood season of 2025 shows that the joint filling area has withstood the test of continuous rainstorm without leakage.

2. Waterproof barrier, blocking the solidification of the "erosion chain" to form a tight waterproof layer, and the shops under the bridge no longer have the phenomenon of "dripping water on rainy days". The key is that the colloid has a weather resistance of -15 ℃ to 45 ℃, which is suitable for the temperature difference in all seasons of Hefei.

3. Environmentally friendly compatibility, visual "traceless". In the rust removal and painting project of Dongzhi Road and Bridge, weather resistant adhesive and environmentally friendly coating form a unified visual. Citizens bluntly say, "The color of the bridge body is brighter, just like newly built

PART-03

Construction Innovation | The Craftsmanship Behind the Millimeter Precision 

Shushan District Municipal Office adopts a "list based management+dynamic monitoring" model to implement graded disposal of bridge diseases:

Micro disease "1-hour response" is aimed at addressing issues such as glass leakage on the top of overpasses. A portable glue gun is used to quickly fill weather resistant glue, reducing single point repair time to 15 minutes.

In the maintenance of expansion joints on five old overpasses, including Zhengyang East Road Bridge, the structural disease "sandwich" process involves laying waterproof backing material at the bottom and filling the upper part with weather resistant adhesive to form a "base layer+adhesive+protective layer" structure, extending the service life to more than 10 years.

The intelligent monitoring "early warning network" installs displacement sensors at key nodes to monitor real-time colloidal deformation data. When the deformation exceeds a threshold, an early warning is triggered, achieving a transition from "passive maintenance" to "active prevention".

PART-04

Industry Insights | The application of the "Shushan Sample" 

Weather resistant adhesive for infrastructure management and maintenance has broken through the limitations of traditional sealing materials. Its balance of elasticity, weather resistance, and construction convenience provides an economical and efficient solution for the long-term maintenance of high flow pedestrian overpasses. In the future, we will promote the "sealant+intelligent monitoring" model, making every pedestrian bridge a "safe+beautiful" city business card.

PART-03

Construction Innovation | The Craftsmanship Behind the Millimeter Precision 

Shushan District Municipal Office adopts a "list based management+dynamic monitoring" model to implement graded disposal of bridge diseases:

When the elastic material of weather resistant adhesive fills every gap of the overpass, it not only makes the infrastructure withstand the test of time, but also allows citizens to feel the warmth of being cared for during every trip. This' Tianqiao Beauty Action 'may be a vivid footnote to the modernization of urban governance.