Chongqing Jialing River Bridge

Jialing River Bridge

synonym

Chongqing Jialing River Bridge generally refers to Jialing River Bridge

Jialing River Bridge, also known as Niujiaotuo Jialing River Bridge, is located between Shangqing temple and Huaxin Street in Chongqing, China. It is the first urban bridge in the main city of Chongqing and a municipal cultural relic protection unit.

In December 1958, the niujialing River Bridge was started. In January 1966, Jialing River Bridge was completed and opened to traffic.

The total length of Jialingjiang bridge is 625.71m, the main bridge is (68 + 80 + 88 + 80 + 68) m five span continuous steel truss bridge, the approach bridge on the south bank is 1 hole 22m simply supported beam, and the approach bridge on the north bank is 7 holes 23m simply supported beam.

Historical evolution

In 1921, when Yang Sen was building Jiangbei Wharf Road, he planned to build a steel bridge on Jialing River.

In 1929 and during the Anti Japanese War, the municipal authorities of the national government also made plans to build bridges on the Jialing River many times.

In 1946, Chongqing formulated the draft ten year plan for the construction of the capital. Later, Mao Yisheng, a master of modern bridge engineering in China, completed the preliminary design of Liangjiang bridge under the entrustment of the municipal government. Among them, the Yangtze River Bridge is located from dongshuimen wharf to xialonghao, with a total length of 982 meters; the Jialing River Bridge is located between Zeng Jiayan and Chen Jiaguan (near the other bank of chunsen), with a total length of 500 meters. Due to lack of funds, the two bridges have not been started as planned.

In 1948, Yang Sen, then mayor of the city, decided to build the Jialing River Bridge with less investment first because he thought that the construction of the two river bridge at the same time was not allowed in terms of manpower and material resources.

On January 16, 1949, Chongqing gentry held a foundation laying ceremony for the Jialing River Bridge in Cangbai hall, Cangbai road. The ceremony was presided over by Yang Sen. At this time, the design of the Jialing River Bridge has been slightly adjusted - it is planned to build from Cangbai road to Jiangbei Shuifu palace, with a total length of 460 meters.

After the liberation, the development of new Chongqing is changing with each passing day. The original "mother city" in the Central District of Chongqing (now the Central District of Chongqing) is very small, and the city needs to expand. At this time, the rapid development of Jiangbei area, a large number of factories, bridge repair was put on the agenda again. Experts from the bridge bureau of the Ministry of Railways came to Chongqing to select the bridge site for Chongqing. After careful investigation, experts selected two suitable locations for bridge construction, namely Niujiaotuo Jialing River Bridge and gaojiahuayuan Jialing River Bridge. The municipal government decided to launch the former, which connects Shizhong District and Jiangbei District, and costs less.

In November 1958, the construction of the bridge entered the site and started in December. At that time, Niujiaotuo Jialing River Bridge was designed by Wuhan Design Office of Bridge Engineering Bureau of Ministry of railways. The bridge bureau of the Ministry of railways, which built the Xiaonanhai railway bridge in Chongqing, sent people to support it. Chongqing offered to appoint experts from the Ministry of Railways as the principal and Chongqing officials as the deputy.

In October 1960, due to "three years of natural disasters", the bridge was shut down.

In early 1964, the bridge resumed construction again. At that time, the construction environment of Niujiaotuo Jialing River Bridge was very difficult: without heavy lifting equipment, Jack was used; without large floating boats, small boats were used; without modern machines and tools, manual operation was used; the cement and steel used for bridge construction were extremely scarce, "the cement should be used as gold and the weight should be used".

In November 1965, Deng xiaoping visited Chongqing. When he came, only the approach bridge of Niujiaotuo Jialing River Bridge had been repaired. Knowing that Deng Xiaoping was going to walk across the bridge, the workers used wooden boards to build a road on the main bridge overnight.

On January 20, 1966, Niujiaotuo Jialing River Bridge was officially opened to traffic.

In 1975, Mr. Li Deyi, the chief calligrapher of Chongqing Museum, was invited to inscribe the bridge.

In order to prevent the bad guys from damaging, troops were stationed on the bridge. It was not until the 1980s that the garrison withdrew.

In 2009, Niujiaotuo Jialingjiang bridge was listed as a municipal cultural relics protection unit.

In December 2017, the 410 day overhaul and emergency rescue project of Jialingjiang bridge began.

Bridge location

Jialing River Bridge starts from Niujiaotuo of Shangqing temple in Yuzhong District and ends at dongjiaxi in Jiangbei;

It is about 200 meters away from yu'ao bridge.

Architectural design

The total length of Jialingjiang bridge is 625.71m, the main bridge is (68 + 80 + 88 + 80 + 68) m five span continuous steel truss bridge, the approach bridge on the south bank is 1 hole 22m simply supported beam, and the approach bridge on the north bank is 7 holes 23m simply supported beam.

The whole project cost more than 14 million yuan.

Other data show that: Jialing River Bridge is 600.59 meters long, main bridge 5 holes, 384 meters long, approach bridge 7 holes, 216.56 meters long, deck width 21.5 meters, including 14 meters of carriageway and 3.75 meters of sidewalk on both sides. The main bridge is a double cantilever bridge with riveted steel truss, and the approach bridge is a reinforced concrete T-beam. The total investment is 18 million yuan. The load is ch-18, hang-80, and the navigation clearance is 60m.

Continuous steel truss structure of Jialingjiang Bridge

Construction achievements

Technical problems

In order to make the foundation more solid, the most advanced technology in the world at that time was used, that is, the large pipe column foundation adopted by Soviet experts in Wuhan Yangtze River Bridge. Because the sand pebble overburden of Jialing River is more than 5 meters thick, the piles have to be driven through them into the bed rock of the river bed, and they have to be drilled 5 meters deep to be stable, and then the underwater reinforced concrete is poured. The pier has a deep pier with a diameter of more than 20 meters under water.

 

Emergency rescue project of Jialingjiang Bridge

In December 2017, the repair and emergency rescue project of Jialing River Bridge was started, with a total construction period of 410 days. Niujiaotuo Jialing River Bridge overhaul emergency rescue project includes main bridge maintenance, approach bridge maintenance, deck system and ancillary construction, etc., to solve the defects and diseases of the bridge

The bridge deck construction is mainly to carry out the transformation of the carriageway slab. The original concrete pavement slab of the bridge deck was removed and replaced with steel deck slab. On the one hand, it is to solve the defects of the original bridge deck, on the other hand, it is to "reduce the weight" of the bridge. Compared with the concrete slab, the steel deck is lighter and stronger, which will effectively reduce the burden of the bridge.

After the reconstruction, the carriageway of Niujiaotuo Jialing River Bridge will be upgraded from concrete pavement to asphalt pavement. In addition, some members of the steel truss beam of the main bridge are strengthened, and the structural defects of the approach bridge are treated and protected, so as to make the bridge safer and stronger. At the same time, reinforce and protect the two piers of the main bridge, and put on a protective cover to block the river water and prevent the piers from being washed by the river water.

In addition, the bridge deck drainage system and power supply and water supply system were reconstructed. Traffic monitoring system and lightning protection grounding system will also be added on the bridge. The maintenance system is an intelligent maintenance system. Monitoring facilities are installed in important parts of the bridge, which can check the bridge at any time, understand the load, vibration and other information of the bridge, and master the health status of the bridge.

 

Value significance

Jialing River Bridge has to be completed and opened to traffic, ending the history that residents on both sides of the river can only cross the river by ferry. Therefore, Jialing River Bridge is also known as "the first highway bridge" in Chongqing.

 

Address: Chongqing Jialingjiang bridge, Yuzhong District, Chongqing, China

Longitude: 106.5406923

Latitude: 29.5623326

Chinese PinYin : Zhong Qing Jia Ling Jiang Da Qiao