Zhejiang Road and Bridge

On the Suzhou River, there are bridges named after garbage - new and old garbage bridges. The old garbage bridge is today's "Zhejiang Road and bridge", while the new garbage bridge is today's Tibet Road and bridge, also known as the Mucheng bridge.

Zhejiang Road and Bridge

Zhejiang Road Bridge, also known as "old garbage bridge", is located on the Suzhou River. It is a channel connecting Huangpu District and Jing'an District in Shanghai, China. It is one of the rare fish bellied simply supported steel truss bridges in Asia. It is also a municipal heritage site in Shanghai

.

Zhejiang Road and bridge was built in 1880

It was rebuilt in 1887

In October 1906, it was rebuilt into a fish bellied simply supported steel truss bridge

It was reopened on December 28, 2015

.

Zhejiang Road and Bridge starts from the intersection of Zhejiang Middle Road, South Suzhou Road, Huangpu District in the South and ends at the intersection of Zhejiang North Road and North Suzhou Road, Jing'an District in the north

The span of the bridge is 59.741m, with a total of 12 sections, each of which is 4.978m long

.

Construction process

Old garbage Bridge

In 1880, the Shanghai industrial bureau built a walking wooden bridge on the Suzhou River

 

.

In 1887, the original timber bridge of Zhejiang Road was destroyed. The old bridge was demolished and a new 5.19-meter-wide bridge was built

 

.

In October 1906, the tram from Shanghai north station to dongxinqiao had to cross Suzhou River along Zhejiang Road. The Ministry of industry removed the timber bridge of Zhejiang Road and rebuilt it into an old garbage bridge with fish bellied simply supported beam and steel truss. The substructure is a gravity abutment with wooden pile foundation. The new bridge is 59.74 meters long and 13.9 meters wide

 

.

In 1908, monorail was laid on the old garbage bridge, and YINGDIAN No.5 and No.6 trams were used

 

.

In 1924, in order to enable two-way traffic of trams, the old garbage bridge tram monorail was changed to double track, and the bridge deck was changed from wooden board to cement concrete bridge deck, and the sidewalk was paved with precast cement concrete slab

 

.

Zhejiang Road and Bridge

In 1942, the old garbage bridge was renamed Zhejiang Road and bridge

 

In addition, the bridge deck is changed from plank to cement concrete, monorail to double rail, and sidewalk is paved with precast cement concrete slab

 

.

In 1946, Zhejiang Road and bridge were painted and maintained

 

.

In 1954, Zhejiang Road and Bridge widened its abutment

 

.

In 1955, Zhejiang Road and bridge strengthened the beam

 

The bridge deck is completely changed into precast reinforced concrete slab, the abutment is repaired, the original small T beam is strengthened, and the b.s.s.k-type channel rail beam is added

 

.

In 1965, Zhejiang Road and bridge body was repaired and strengthened

 

The main truss shall be repaired for anti-corrosion, the whole bridge shall be painted, the concrete deck of sidewalk shall be repaired, and the track of tram deck shall be changed

 

.

In 1974, Zhejiang Road and Bridge raised the abutment, raised the bridge deck and removed the tram track to pass No. 14 and No. 15 trolleybuses; the sidewalk was changed into a non motorized lane, and sidewalks were added on both sides

 

.

In 1976, in order to relieve the traffic pressure, Zhejiang Road and Bridge changed the 2.16m cantilevered sidewalks on both sides of the main truss into non motorized lanes, and widened the 1.08M cantilevered ends as new lanes

 

.

In 1986, the whole bridge of Zhejiang Road and bridge was overhauled

 

And paint

 

.

In 1993, Zhejiang Road and bridge strengthened the non motor vehicle lane

 

.

In 1997, Zhejiang Road and Bridge carried out the reinforcement construction of the bridge

 

.

In 2008, Zhejiang Road and bridge reinforcement, replacement parts, painting rust layer, paving asphalt

 

Motor vehicles will be switched to one-way traffic

 

.

In January 2009, Zhejiang Road and bridge reinforcement was completed

 

.

On April 18, 2015, Zhejiang Road and bridge were closed

 

. On May 29, the steel structure framework of Zhejiang Road and bridge was moved to the repair site for repair

 

. On October 18, the repair of the main structure of Zhejiang Road and bridge was completed and restored to the Suzhou River. On December 28, Zhejiang Road and Bridge reopened

 

.

Bridge location

Zhejiang Road and bridge is located in Shanghai, China, on the Suzhou River. It is 366.6 meters away from Tibet Road and Bridge on the upstream of the river in the west, and 200 meters away from Fujian Road and Bridge on the downstream of the river in the East. The bridge runs in a north-south direction, starting from the intersection of Zhejiang North Road and Suzhou north road in Jing'an District in the north and ending at the intersection of Zhejiang middle road in nansuzhou road in Huangpu District in the south

 

.

Architectural design

building structure

Zhejiang Road and bridge is a through simply supported steel truss bridge, which adopts a very rare fish belly shape design. The steel truss structure includes web members, inclined web members, upper and lower chords, etc

 

. The bridge deck of Zhejiang Road and bridge adopts the traditional beam slab system, the beam bears the load, and is hung under the fish bellied truss through the suspender, and the bridge deck is concrete slab. Between the main trusses is the motorway, and on both sides of the main truss is the sidewalk. The bar sections are composed of angle steel, and the connection joints are plate joints, which are connected together by rivets

 

.

Design parameters

As of December 2015, the span of Zhejiang Road and bridge is 59.741m

 

519 m in width

 

There are 12 sections, each section is 4.978m long, the main truss spacing is 9.033m, the highest truss is 9.101m, and the sidewalk width is 2.5m

 

The gradient of the bridge is 5%, and the thickest part of the concrete deck on the bridge is 25 cm, and the thinnest part is 10 cm

 

. Zhejiang Road and bridge is a one-way one lane bridge with a weight of 444.7 tons

 

.

Equipment and facilities

Lighting facilities

In December 2015, Zhejiang Road and Bridge floodlighting scheme introduced the design concept of "green lighting" and concealed installation of lamps. The landscape lighting of the whole bridge is divided into several levels: the LED white light outline lamp outlines the linear outline of the upper and lower fish belly chord truss of the bridge, so that people can see Zhejiang Road and Bridge lying across the river from a distance; the LED floodlight is set at the intersection of inclined web members, and the light position is concealed inside the members, so as to illuminate the side of the cross bridge, soft but not dazzling; the LED point light source highlights the double line of fish belly, The ornamental effect of the bridge at night is increased

 

.

Operation

Ticket price

As of December 2015, Zhejiang Road and bridge connected Zhejiang North Road and Zhejiang Middle Road, which is a part of municipal road and free of charge.

Traffic matters

As of December 2015, Zhejiang Road and bridge has implemented two-way traffic for pedestrians and non motor vehicles, and motor vehicles have one-way traffic from north to south, with a height limit of 4.5m

 

.

Construction achievements

Technical problems

Construction problems

On May 29, 2015, Zhejiang Road and Bridge carried out the transfer work

1. Zhejiang Road and bridge has been built for a long time, so it is difficult to accurately calculate and analyze the stress state of joints. Therefore, it is particularly important to choose a reasonable construction scheme to ensure that the stress state of the bridge body in the construction stage is as close as possible to the current use state. In the construction stage, it is necessary to strengthen the bridge body and monitor the whole process of the stress of the bridge body.

2. Zhejiang Road and bridge construction site conditions are complex, construction constraints are many, need to work on the road and river at the same time, the construction area across Huangpu and Jing'an, need multi-party coordination.

3. Zhejiang Road and bridge is a bridge with large span, heavy weight and difficult to move. The span of the whole bridge is 59.75 meters. The weight of the bridge after removing the bridge deck pavement and ancillary facilities is about 400 tons, and the construction site is narrow. How to reasonably arrange the machinery and choose the safe construction technology to ensure the safe and smooth construction is a big difficulty.

4. The bridge body of Zhejiang Road and bridge is a cultural relic, so it is very important to protect the structure in the construction stage. During the whole lightering, effective reinforcement treatment is needed, and the disturbance to the structure is reduced through road treatment, synchronous control and horizontal control measures.

5. Zhejiang Road and bridge is located in the bustling city center, adjacent to the residential area and the downtown business circle, with high environmental requirements. It is necessary to have reasonable and effective noise and dust prevention operations and environmental protection measures.

6. It is difficult to lift and reinforce the old bridge. In order to lift Zhejiang Road and bridge, reinforcement is the first step. However, in more than 100 years, the repair of Zhejiang Road and bridge has come from many aspects of the society. There is no complete and detailed record, which leads to the corrosion of bridge joints and unclear stress state, which brings difficulties to the reinforcement work. In this regard, through the monitoring device, and the whole process control in the reinforcement process of the key node and the force is not clear position, for lifting the old bridge laid the foundation

 

.

construction technique

On May 29, 2015, Zhejiang Road carried out the transfer work

1. It is difficult to determine the crane position. Used for moving bridge