Puqian Bridge is the fourth sea-crossing bridge in Hainan Province and the second one in Wenchang City. It is also the longest sea-crossing bridge in Hainan Province and the tallest bridge tower in Hainan. Its tower height is151.8m. The zigzag pylon of cable-stayed bridge means "de". Puqian Bridge has broken four records in the history of bridge construction in China, and it is also the second cross-sea construction with 9-level seismic fortification in China.
Brief introduction of bridge
Puqian Bridge is a cross-sea bridge connecting Haikou and Wenchang. The total length of the bridge is about 3.8 kilometers, and the estimated total investment of the project is about 65.438+0.46 billion yuan. 20 12 On April 28th, with the approval of the National Development and Reform Commission, paved roads and bridges were built. The construction legal person of Puqian Bridge is Wenchang Urban Construction Investment Co., Ltd.
Puqian Sea-crossing Bridge starts from Hougou Village, Puqian Town, Wenchang City, connects to the proposed Wenchang Binhai Tourism Highway, passes through Sanbang Village and North Hong Kong Island, ends at Tashi, Yanfeng Town, Haikou City, and connects to Jiangdong Avenue planned and constructed in Haikou City, with a total length of 5.7 kilometers, of which the sea-crossing bridge is about 3.8 kilometers long, and the wiring length on both sides is about 1.9 kilometers. The whole line adopts the first-class highway standard construction. Regarding the financing of the project construction, the National Development and Reform Commission agreed that the estimated total investment of the project is about 65.438+0.46 billion yuan (static investment is about 65.438+0.33 billion yuan), of which the capital is about 365 million yuan (accounting for about 25% of the total investment), mainly raised by Hainan Province, and the remaining 65.438+0.95 billion yuan is solved by domestic bank loans. The journey from Haikou to Puqian was shortened from more than 2 hours to more than 20 minutes. This great change has achieved an enviable leap.
The significance of the construction of Wenchang Puqian Bridge project lies in promoting the construction of Hainan International Tourism Island, perfecting the regional highway network, giving full play to the radiation-driven role of Haikou, and promoting the development of tourism resources and coordinated economic and social development along the route. After the opening of Puqian Bridge, it will greatly promote the tourism development in Puqian area, and also help Wenchang to better integrate into Qiongbei tourism circle with more convenient transportation advantages.
Puqian Bridge is the "Four Famous Bridges" in China.
The peak acceleration of ground motion is the highest in China.
The bridge site of Puqian Bridge is the epicenter of 1605 Qiongshan earthquake with magnitude 7.5, and it is also a potential source area. Due to the influence of active faults, the peak acceleration of ground motion is the highest in China, and the seismic fortification standard of bridges is the highest in China. Because it is located in the strong earthquake area and crosses the active fault zone, the seismic performance of the bridge is studied in this project.
The No.1 in China
Extra-large bridge across active faults
The construction conditions of Puqian Bridge are extremely complicated. The bridge site is near the intersection of two active faults. Due to the limitation of planning and terrain conditions, the bridge site can not effectively avoid faults. It is the first super-large bridge across an active fault in China, and the bridge design is unprecedented beyond the scope of existing codes.
Design basic wind speed
The largest in China.
Puqian Bridge is located along the Qiongzhou Strait in the northeast of Hainan Island, which is prone to strong typhoon, close to the eastern entrance of the Strait, with strong wind. The design basic wind speed is 49.5m/s, which is the largest in China. On 20 14, the super typhoons "rammasun" and "Seagull" which severely hit Hainan Island passed through the bridge.
The No.1 in China
Bridge engineering under PMC mode
Puqian Bridge is a large-scale cross-sea bridge project with complex construction conditions, high technical difficulty and large project investment. In order to better promote the project construction management, the project management contract (PMC) mode is adopted for construction. PMC mode is widely used in international projects. This project is the first bridge project in China to adopt PMC mode for construction management.
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