Panyu bridge

Panyu bridge

Panyu bridge is a river crossing channel connecting Haizhu District and Panyu District in Guangzhou City, Guangdong Province, China. It is located on the main stream of the south of the Pearl River and is one of the parts of South China expressway,

It is also one of the main terminal exits of expressway network in Guangdong Province.

Panyu bridge was built in January 1995, completed on July 3, 1998 and put into operation on August 12, 1998.

The North China Bridge overpasses the Pearl River Delta, the Luoxi island and the three fragrant channels, and the south to the north end of Panyu Avenue. The total length of the bridge is 4.875 km, and the main bridge is 702 meters long; the Panyu bridge is located in the north.

The bridge deck is a two-way eight Lane urban expressway with a design speed of 100 km / h and a total investment of 1.1 billion yuan.

Construction process

In December 1992, Panyu District Government of Guangzhou City reported the plan of Panyu bridge to Guangzhou municipal government.

On January 26, 1993, Guangzhou Urban Planning Bureau issued the site meeting minutes for the construction of "guangfan bridge" (now Panyu bridge), initially determining the site selection of Panyu bridge; on June 2, the same year, Guangzhou Urban Planning Bureau officially approved the site selection report of Panyu bridge by Panyu municipal government; on October 8, the foundation of Panyu bridge project was laid.

On April 27, 1994, Guangzhou Municipal Planning Bureau approved the report on the best scheme of Panyu bridge site; on May 30, 1994, Guangdong Provincial Department of transportation submitted the supplementary report on the feasibility study of Panyu bridge project to the Provincial Planning Commission for project approval; on July 25, 1994, Guangdong Provincial Planning Commission approved the feasibility study report of Panyu bridge project and approved the project approval; on December 19, 1994, Guangdong Provincial Planning Commission approved the feasibility study report of Panyu bridge project Guangzhou Maritime Safety Supervision Bureau issued the reply of Jiaosui Haijian (1994) No. 280 on the navigation standard of Panyu bridge.

In January 1995, the construction of Panyu bridge began.

On July 3, 1998, Panyu bridge was completed; on August 12, 1998, Panyu bridge was handed over for acceptance and put into use;

In September of the same year, Panyu bridge was opened to traffic.

On June 30, 2015, Panyu bridge was incorporated into China's etc network for charging, and the full weight charging of freight cars was implemented simultaneously.

On December 18, 2017, Panyu bridge completed the switching work of "replacing business tax with value-added tax" in China's national one net interconnection charging system.

Bridge location

Panyu bridge is located on the Lijiao channel of the Pearl River between Haizhu District and Panyu District of Guangzhou City, Guangdong Province, China. It is located in the southeast of Haizhu District of Guangzhou city. The bridge is 3.9km away from the upstream Luoxi Bridge in the East,

It is 1.5km to the east from the upstream Xinguang Bridge.

As of 2014, the whole section of Panyu bridge is a part of South China expressway < I (Guangdong Expressway S4) < / I,

The north line of the line connects the Guangzhou Expressway

Architectural design

building structure

Overall layout

Panyu bridge is composed of main bridge on water, north-south approach bridge on land, inverted Y-shaped pylon and its interchange ramp,

 

The whole road section is arranged in the direction of due south and due north.

 

 

Design concept

In the structural design of cable-stayed bridge, there are many changes and combinations of tower, beam and cable. Based on the consideration of navigation, beauty of Pearl River and regional symbol of Panyu, Panyu bridge adopts cable-stayed bridge design.

 

Design features

Panyu bridge is the second super large bridge on Guangzhou Zhuhai east line,

 

It is also the first long-span cable-stayed bridge with inverted Y-shaped pylon and concrete beam with spatial cable plane in China. It has the characteristics of long beam, wide deck, high pier, new bridge type and large span. The bridge is arranged as a floating system with tower beam separation to reduce temperature, shrinkage, creep and seismic load effect,

 

The structure system of prestressed concrete cable-stayed bridge with two pylons and two cable planes is adopted. Among them, the main bridge adopts the advanced side girder DP section, the bridge approach is a separate bridge, and the main tower adopts the diamond shaped reinforced concrete frame structure; the main beam adopts the front fulcrum hanging basket (traction hanging basket) pouring construction, which is successively closed in the side span and the middle span; the side span is provided with an auxiliary pier to increase the stiffness of the whole bridge; the stay cables are arranged according to the spatial double cable plane.

 

 

Design parameters

The total construction area of Panyu bridge is 26465.5 square meters, and the total length of the line is 4.875 kilometers. The main span is 380 meters, and the side spans on both sides are 161 meters, symmetrically arranged. At the same time, one auxiliary pier is set for each of the two side spans, and the side span is divided into 70 meters + 90 meters. The total width of the bridge deck is 37.7 meters, with 6 carriageways and 2 sidewalks. The width of the carriageway is 2 meters by 15.75 meters, the central isolation belt is 1.5 meters, and the anti-collision barrier is 2 meters by 0.5 meters The cable anchorage zone is 2 m x 1.55 m, and there are 124 cables in the whole bridge; the tower height is 140.3 m, the distance between the main tower and the bearing platform surface is 34 m, the lower tower column inclines outward with a slope of 1:3; the left and right width of the bridge approach is 1.85 m; the main section of the bridge is a two-way eight Lane urban expressway, which adopts the first-class highway standard.

 

Equipment and facilities

As of January 2016, Panyu bridge has been equipped with traffic technology monitoring equipment.

As of March 2017, the green link rapid inspection system has been installed in the toll station of Panyu bridge.

 

Operation

Fare system

According to the administrative and institutional fee catalogue of Panyu District in Guangzhou (2017 Edition), Panyu bridge is a two-way fee system.

 

Traffic matters

Lane diversion

Since October 1, 2016, the exit section of Panyu bridge from Guangzhou to Panyu has been reconstructed by diversion. Small vehicles and large vehicles go their own way, avoiding the chaos of all kinds of vehicles.

 

traffic flow

As of August 2015, the average daily traffic volume of Panyu bridge is nearly 70000.

 

Construction achievements

Technical problems

construction technique

Panyu bridge is the first large-span cable-stayed bridge with inverted Y-shaped pylon and concrete beam with spatial cable plane in China, and its concrete girder and tower column inclination are the largest at that time. The diameter of bored pile and the size of pile cap used for foundation are also relatively large. In the construction of the upper part of Panyu bridge, in addition to the reasonable application of high-performance concrete and prestressed construction technology, the climbing formwork, cable hanging basket, heavy support, sleeve positioning and other construction technologies are also developed; in the foundation construction, the unique low-cost and high-speed construction scheme is adopted in full combination with the geological and hydrological conditions of the bridge site.

 

Construction difficulties

The construction difficulty of Panyu bridge lies in the technical requirements of early strength, high strength, super retarding and pumping for concrete in the construction of main tower beam. On the premise of strictly selecting raw materials and ensuring their quality, the technical measures of mixing admixtures and fly ash at the same time can meet the technical requirements, including the selection of admixtures, the determination of admixtures and the composite technology In addition to scientific and reasonable mix proportion design, we must also strengthen the quality control and process cooperation in all aspects of construction, so as to ensure the smooth construction and good quality of the project.

 

Scientific research achievements

Honorary recognition

Cultural characteristics

The toll station at the south end of the main line of Panyu bridge adopts the classical style. The four characters "food in Guangzhou" are hung on the gantry. It serves as a clear guide for the food street during the food festival. It also represents Guangzhou, a city of food with a long history and rich culture.

 

Value significance

The successful construction of Panyu bridge has gathered the wisdom and hard work of many leaders, experts and engineering technicians who have contributed to the construction of the bridge, accumulated valuable experience for the future construction of super wide cable-stayed bridge, and provided valuable practical data for the scheme comparison of super wide cable-stayed bridge. < I (annual meeting of bridge and Structural Engineering Society of Chinese Civil Engineering Society) < / I

 

If Luoxi Bridge is the starting point for the confluence of Panyu and Guangzhou, then Panyu bridge is the ladder for the joint development of Panyu and Guangzhou. Its completion not only improves the investment environment of the Pearl River Delta, accelerates the rapid development of the Pearl River Delta, but also facilitates the southern expansion of Guangzhou city. With the completion of yujingwan, Xinghewan and other houses on the bridge bank, more and more people choose to work in the city center and live in Panyu. Now, Panyu bridge has quietly gone through 20 years of wind and rain, and now Guangzhou is enjoying a prosperous urban development The Panyu bridge, as an important passage for the south exit of Guangzhou, is both a departure and a return journey