Century Bridge

Century Bridge

Shiji bridge, a cross sea passage in Haikou City, Hainan Province, China, is located at the entrance of Haidian River. It is a national key project during the Ninth Five Year Plan period and one of the landmark buildings in Haikou City.

The construction of Century Bridge started on May 29, 1998;

The closure project of the main bridge was completed on November 22, 2001, and the whole bridge was connected;

It was put into trial operation on August 1, 2003;

It was officially put into operation on February 26, 2004.

Century Bridge starts from Binhai overpass in the south, crosses Haidian River into Haikou, and ends at Haidian Wuxi road in the north. The total length of the line is 2663.606 m, and the main bridge is 636.60 M. the bridge deck is a two-way six lane urban trunk road with a design speed of 60 km / h. The total investment of the project is 667 million yuan.

Construction process

On May 29, 1998, the construction of Century Bridge started.

On September 8, Century Bridge launched the South caisson; on September 14, Century Bridge launched the North caisson.

On September 28, 2000, the north and south main towers of century bridge were capped.

On November 22, 2001, the closure project of the main bridge of century bridge was completed, and the whole bridge was connected.

On July 31, 2003, the rehearsal for the opening of century bridge was held;

On August 1, century bridge was put into trial operation.

On February 26, 2004, century bridge was officially put into operation.

On April 23, 2005, Century Bridge passed the environmental protection acceptance.

On December 12, 2014, Century Bridge carried out the maintenance and repair of stay cables.

On February 15, 2015, Century Bridge completed the maintenance and repair of stay cables;

On May 27, the century bridge was closed for inspection.

On December 7, 2019, Century Bridge completed the anti-corrosion construction of North and south main tower walls.

Bridge location

Century bridge is located in Haikou City, Hainan Province, China. It starts from Binhai overpass in Longhua District in the south, crosses Haidian River into Haikou, reaches Meilan District in the north, crosses Bihai Avenue in the north, ends at Haidian Wuxi Road, connects Binhai Avenue and Longkun North Road in the south, and connects Wanxing road along Century Avenue in the north.

Architectural design

building structure

Overall layout

Century bridge is composed of main bridge, South and North approach bridges, two pylons, stay cables, piers and their Interchange Ramps; the main bridge section is arranged from due south to due north.

 

Design features

Design parameters

The line of century bridge is 2663.606 meters long, and the main bridge is 636.60 meters long, with (147 + 340 + 147) span layout. The main girder is 2.1 meters high and 34.4 meters wide, and the side girder is 1.8 meters high and 1.8 meters wide. The thickness of the bridge deck is 22 cm, the span between beams is 3.6 meters, and the thickness of the web is 30 cm. The bottom elevation of the bridge tower is 4.10m, the top elevation of the tower is 110.00m, the height from the top of the main tower caisson to the top of the tower is 106.90m, the inclination ratio of the upper tower column is 1: 4.883, and the inclination ratio of the lower tower column is 1: 2.627. There are 241 stay cables in total.

 

Equipment and facilities

lighting

As of August 2003, the century bridge has been equipped with landscape lighting and other facilities, which are composed of four sets of night lighting lights. They irradiate different parts respectively, and the lighting time of different parts is also different.

 

Lightning protection facilities

On November 6, 2003, Century Bridge passed the acceptance of lightning protection facilities. The lightning protection facilities are two sets of products imported from France, which are respectively placed on the top of two 110 meter high main towers of the bridge.

 

Traffic monitoring

On June 7, 2005, Century Bridge launched ldr-6 special eye radar to capture and record illegal vehicles such as speeding and overtaking.

 

sightseeing lift

As of September 2014, there are 4 towers and 8 sightseeing elevators at the north and south ends of the main bridge of century bridge. Visitors can take the elevator to the top of the building to overlook the sunrise and sunset on the sea, the architectural scenery and beauty around the sea and Century Park.

 

Operation

Fare system

On August 1, 2003, century bridge was put into trial operation, and the whole bridge was free of charge.

 

Traffic matters

Speed limit

On August 10, 2005, the speed of century bridge was increased from 60 km / h to 80 km / h.

 

Road control

From December 7 to December 19, 2019, the safety protection shed and the limited viaduct at both ends of the north and South Main Tower Wall anti-corrosion project of century bridge were removed. In order to ensure the construction safety, the temporary traffic control of century bridge was carried out.

 

Protective facilities

As of May 2010, century bridge has renovated the traffic guardrail, pasted the reflective film on the guardrail in the way of red and white, and installed the reflective triangle delineation mark on the ground pier to beautify the appearance of Haikou City, enhance the reflective effect at night, and play a warning effect on drivers.

 

Construction achievements

Technical problems

The difficulties faced by Century Bridge during construction are as follows:

1. The main tower has a high inclination. Due to the large inclination of the main tower column of century bridge, if the dead load is not adjusted in the process of construction system transformation, the main tower structure will be unable to bear the huge bending moment caused by the structure weight.

2. The side span stress amplitude of main girder is large. Because most of the stones in Haikou area are igneous rocks and the strength is not enough, the prepared stones of C60 concrete must be transported from a distance.

3. Negative reaction of side pier support. Century Bridge side span across the water, the main girder is side girder structure, if the section of the beam is too long, it will bring great difficulties to the construction.

4. Strong wind and strong earthquake. There are a lot of contradictory problems in the anti wind and anti-seismic design of century bridge. How to reasonably solve the anti wind and anti-seismic problems is the key point of the bridge design.

 

Cultural characteristics

Celebrate the festival

On January 30, 2011, Century Bridge put flowers around the special theme to welcome the Spring Festival.

 

On August 23, 2011, Century Bridge opened a mid autumn Festival moon cake sales street in the corridor space below to facilitate people to buy and receive moon cakes.

 

On September 25, 2018, Century Bridge put the national flag on the road lights to welcome the arrival of national day.

 

On January 24, 2019, Century Bridge will hang lanterns on both sides of the road to celebrate the coming of new year.

 

Earth Hour

On March 27, 2010, Century Bridge turned off its landscape lights for one hour in response to the earth hour activity launched by WWF.

 

Value significance

After the completion of the century bridge, it will become the main road connecting the downtown area of Haikou and Haidian island in the northeast of the urban area. At the same time, with complete functions and novel shapes, the bridge will become an important tourism landscape and urban landmark in Haikou. < I (Xinhua editorial) < / I

 

Address: Century Bridge, Yixing, Wuxi, Jiangsu Province

Longitude: 119.813319

Latitude: 31.363268

Chinese PinYin : Shi Ji Da Qiao