The construction drawing design of Siyang Bridge demolition includes three parts: main hole demolition design, auxiliary hole demolition design and approach bridge demolition design. Demolition method adopts gantry crane for demolition. When the bridge is demolished, it will be completely closed and traffic control will be implemented. No vehicles or pedestrians are allowed to pass. In order to save money, temporary bridges are not built, and all the original transit vehicles are bypassed. According to the budget, the bridge demolition budget is 63,365,438 yuan+0,955 yuan, and the construction period is three months.
At present, the total length of Siyang Bridge is 521.35m, and the design load is automobile-15, trailer -80, the bridge deck is 7m wide, and the sidewalks on both sides are1.2m wide. The bridge was completed and opened to traffic in July. 1977. After operating for 3 1 year, many diseases appeared on the bridge. In August of 200 1 year, the ship hit the arch rib of the main arch, which was seriously damaged. Although it was reinforced and maintained, the original bridge was tested and comprehensively evaluated as dangerous. After many comparisons, experts suggested that the existing bridge be demolished and the Siyang Bridge be built at the original site.
Siyang Bridge of Beijing-Hangzhou Canal (hereinafter referred to as Siyang Bridge) is located in the south of Siyang County. It is an important urban passage connecting the north and south banks of the Beijing-Hangzhou Canal and the most convenient passage from Xu Yan Expressway to Siyang County. The original bridge was an arch bridge. Because the pier was repeatedly collided by passing ships, it was identified as a dangerous bridge by experts. In addition, the bridge width can't meet the increasing traffic demand, and the bridge span can't meet the navigation clearance requirements of the waterway, which seriously restricts the economic and urban development of Siyang. The county government decided to demolish and rebuild the bridge. In order to build Siyang Bridge into a landmark high-quality project in Siyang County, the Siyang County Party Committee and the county government invited the Survey, Design and Research Institute of Zhongjiao No.2 Highway to conduct a comprehensive design of the shape, structure and landscape of the bridge. After repeated argumentation by the expert group, the final plan was formed.
The overall design orientation of Siyang Bridge is to show the urban features of "Sishui ancient country, Yiyang hometown, emerging textile capital and ecological home". Its design concept is: "Changhong WoBibo Ancient City takes on a new look" to build a landscape bridge with Siyang's unique regional culture. Respect the existing environmental foundation, the bridge is in harmony with the surrounding buildings, streets, canals, green spaces and other environments, making it a visual center that is both integrated and prominent with the whole region and a landmark building in Siyang County. The main bridge is a single-tower cable-stayed bridge with tower-beam consolidation system. The single tower beam is located on the south bank of the canal, with a clear width of 26 meters and four lanes in both directions. Now, three sets of concrete design schemes are publicized to the whole society as follows.
Scheme 1: the gate of the times
Geographically, Siyang Bridge is the closest bridge to the main city, only 100 meters away from Huayuankou, the most prosperous area in Siyang, and it is the south gate leading to the main city of Siyang. The scheme extracts the architectural form of "arched garden gate" from classical gardens, and outlines the "gate of the times" combining simplicity with modernity, elegance and vitality by using abstract techniques and smooth curves. The magnificent "arch" main tower echoes the Ming and Qing Jiangnan dwellings on the ancient Roman street. The concise and lively cable has a distinct sense of the times and shocking visual impact, and has become a well-deserved modern landmark building in the main city. "Gate of the Times" will tell the time and space changes from Qin and Han Dynasties to Ming and Qing Dynasties and then to modern times together with the ancient Roman street in Siyang, eulogizing the long-standing ancient charm of old Siyang and the charm of emerging Siyang! She is not only the "gate of the times", but also the "gate of harmony" and "gate of happiness" for the people of Siyang to live a happy and beautiful life. She will also be the "door of hope" and "door of take-off" to witness the all-round development and rapid take-off of Siyang.
Option 2: Golden Lock Silver Wire
"Golden shuttle and silver thread" is the design concept, and the whole bridge tower is like a shuttle for textile, which embodies the regional characteristics of Siyang's emerging textile capital and symbolizes the ever-changing progress of Siyang. Wish Siyang a bright future with "Golden Shuttle and Silver Thread".
Option 3: Harmonious Twin Towers
The bridge tower outlines the concise and abstract outline of the main tower with rich lines, which complements the towers on the ancient streets of Rome. At the same time, it looks like a jade bottle, giving people a feeling of tranquility and peace, symbolizing the peaceful and auspicious life of Siyang people. The scheme not only implies aesthetic feeling, but also harmoniously unifies with the surrounding buildings, so it means "harmonious twin towers".