Lupu Bridge is a river crossing channel connecting Huangpu District and Pudong New Area in Shanghai, China. It is located on the Huangpu River waterway and is one part of Shanghai's north-south viaduct.[1]
Lupu Bridge was built in October 2000;[1]The closure of the main bridge was completed on October 7, 2002;[2]It was opened to traffic on June 28, 2003.[3]
Lupu Bridge starts from Shanghai North South Elevated Road in the south, crosses Huangpu River waterway in the north, and ends at Luban Road Interchange in the north;The line is 8722 meters long, and the main bridge is 750 meters long;The bridge deck is a two-way six lane urban expressway with a design speed of 60 km/h and a total investment of 2.2 billion yuan.[1][4]
Chinese name
Lu Pu Bridge
Foreign name
Lupu Bridge
Commencement date
October 2000
Operation time
June 28, 2003
Region
Shanghai, China
Type
Arch bridge, super large bridge, highway bridge
Length
8722 m
Width
29.8 m
Lane setting
Two way six lane
Design speed
60 km/h
Start stop position
Shanghai North South Viaduct, Luban Road Interchange
In August 1999, Shanghai Huangpu River Bridge Engineering Construction Department collected Lupu Bridge design scheme.[1][5]
On October 25, 2000, construction of Lupu Bridge started.[1]
On October 7, 2002, Lupu Bridge was closed.[2]
Lupu Bridge was opened to traffic on June 28, 2003.[3]
In 2010, in order to welcome the opening ceremony of the World Expo in Shanghai, China, Lupu Bridge replaced its lighting equipment.[6]
In September 2018, in order to welcome the China International Import Expo, Lupu Bridge was coated.[7]
In March 2023, the navigation aid signs of Lupu Bridge will be updated, reconstructed and efficiency checked[20]。
Bridge location
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Lupu Bridge is located in the Huangpu River section of Luwan District, Shanghai, in the center of the city, and is the southern extension of the north-south elevated road in the urban area.The bridge is west of the upstreamXupu Bridge 7.2km, south to the downstreamNanpu Bridge3.5 km;It starts from Shanghai North South Elevated Road in the south, crosses the Huangpu River waterway on the top, and ends at Luban Road Interchange in the north. Its Puxi section is located on the north bank of Huangpu River in the south of Luwan District in the center of the city, and connects from Shanghai North South Elevated Road to the south. The Pudong section is located in the south of Pudong New Area.[8]
Lupu Bridge Crossing the River
Architectural design
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building structure
Overall layout
Lupu Bridge is composed of the main bridge on water, arch ring, arch rib, land Pudong, Puxi approach bridges and their interchange ramps. The main bridge section is arranged from southeast to northwest.[5]
Lupu Bridge Changhong Wobo
Design concept
Lu Pu Bridge
In Lupu Bridge, the bridge body is in a beautiful arc shape, like a rainbow lying on the waves, flying over the Pujiang River.The designer integrated three different types of bridge design processes, namely cable stayed bridge, arch bridge and suspension bridge, according to the characteristics of the bridge itself in a wide water area, and in order to make the bridge well integrated into the overall urban space, and take the river water color as the background of the main body of the bridge,The spectacular and beautiful reflection of the bridge on the river makes the bridge itself a good place for citizens and tourists to enjoy the landscape and leisure, and finally the half through arch bridge scheme is selected.[9-10]
Lupu Bridge is presented as an arc half through arch bridge, which can not only shorten the span of the main bridge to the maximum extent on the premise of ensuring the requirements of the main channel, but also distinguish the three existing large bridges of Nanpu, Yangpu and Xupu at that time with its soft and smooth curve and closed and transparent space.[4][9]
Design features
The section shape of the arch rib of Lupu Bridge is gyroscopic
The main bridge of Lupu Bridge is a steel arch bridge with space basket half through arch beam composite system. Strong horizontal cables are arranged between the cross beams at both ends of the main bridge to balance the horizontal thrust of the mid span arch rib. The stiffening beam is supported on the arch rib through suspenders or columns;The side span stiffening beam is consolidated with the arch rib at the intersection of the arch beam of the middle span and the side span respectively;The two ends of the mid span stiffening beam are supported on the cross beam at the intersection of the mid span arch beam. The end support is a longitudinal sliding support. Damping limiting devices are set in the transverse and longitudinal directions.[11]
The section shape of Lupu Bridge's arch rib is gyroscopic, and the arch rib is stiffened by T-type stiffening;The cross section of the tie beam in the triangle area of the side span is a closed steel box beam, and the side span tie beam is consolidated with the arch rib, column, side arch end beam, and mid span arch beam combination section beam;The mid span tie beam is an open steel box girder supported on the arch rib by suspenders, and its two ends are connected with the crossbeam of the mid span arch beam junction section through the support.[11]
Design parameters
Lupu Bridge has a total length of 8722 meters, and the planned shoreline width of Huangpu River at the bridge site is 480 meters. The main bridge has a total length of 750 meters, with a span of (100+550+100) meters, a rise span ratio of 1/5.5, and the vertical curve radius of the main bridge deck of 9000 meters;The top width of the arch rib of the bridge is 5 meters, the bottom width is 3 meters, the plane inclination is 1:5, the transverse bridge spacing of the arch foot is 51 meters, and the transverse bridge spacing of the arch crown is 11 meters;The total width of the bridge deck is 29.8 meters, which is a two-way six lane bridge. The main approach bridge is 25.5 meters wide in six lanes, 18 meters wide in four lanes, 8.5 meters wide in two lanes on ramps, and 7.5 meters wide in a single lane;The maximum longitudinal slope of the main line is 5.0%, the maximum longitudinal slope of the ramp is 6.4%, and the standard cross slope is 2%.[8][12]
technical standard
Road grade
Urban expressway
Design speed
Main bridge 60 km/h;Ramp 35 to 40 km/h
Load standard
Highway - Class I (automobile - Class 20, trailer - 100)
Navigable clearance
Net width: 340m, net height: 44+2m (affluent height)
Navigable water level
+4.0m
Navigation grade
National Class I (50000 tons)
Shockproof grade
Adopt 7-degree fortification measures, and the importance correction coefficient is 1.3
reference material:[4][8][12]
Equipment and facilities
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Lighting facilities
In order to welcome the opening ceremony of World Expo 2010 in Shanghai, China, the overall shape of Lupu Bridge is intended to fly across the rainbow;LED dynamic lights are used to show the rainbow in the sky, which is in contrast to the white light of Nanpu Bridge.[6]
Lighting equipment of Lupu Bridge
Electronic monitoring
As of September 2018, the Lupu Bridge has been equipped with traffic monitoring equipment such as electronic police.[13]
Sightseeing facilities
As of May 2009, tourists can take the high-speed sightseeing elevator to the bridge deck of Lupu Bridge, which is 50 meters high. They can climb up the steps along the bridge arch rib sidewalk. After walking 300 steps, they can climb up to the top of the arch rib, which is 100 meters high, and stand on a sightseeing platform the size of a basketball court to view the beautiful scenery of Pujiang River.[14]
Operation
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Fare system
In February 2000, the CPPCC Shanghai Municipal Committee submitted the proposal of "Negative Effects of River Toll Collection and Several Suggestions for Solving Contradictions";In May of the same year, the Shanghai Municipal Government announced the cancellation of charges for river crossing tunnels and bridges, including Lupu Bridge.[15]
Passage
As of April 17, 2015, due to the physical examination of Nanpu Bridge, Lupu Bridge is allowed to pass by minivans.[16]
Construction achievements
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Technical difficulties
construction technique
Lupu Bridge adopts 3D solid modeling virtual construction technology in construction design.This is a modern engineering design method that integrates computer aided design and parametric solid modeling, assembly modeling, two-dimensional and three-dimensional pun drawing, graphic converter and other modules. All components in the steel structure of Lupu Bridge are built into a three-dimensional space model by using the software MDT and self-designed expansion module;The size of each component in the 3D model shall be corrected, especially the precise positioning of the joint of components, and the guidance for manufacturing shall be provided, so as to reduce a lot of manual operation and calculation work of designers and avoid calculation errors or errors;Due to the complex shape of Lupu Bridge, this method can solve various problems in the process of bridge construction efficiently and accurately.[17]
Lupu Bridge adopts 3D solid modeling virtual construction technology in construction design
Construction difficulties
Lupu Bridge is a half through arch bridge, and the main technical difficulties in the construction of mid span arch ribs include: ① heavy workload of temporary measures, including temporary cable tower, stay cable and anchor box, temporary wind bracing, as well as walking and anchoring measures matching with overhead crane, installation and operation of scaffold system, etc.; ②The construction control is difficult. The arch rib itself is a complex spatial structure, and the construction process of the arch rib is also affected by the climate, sunshine and other external conditions, which requires that the three-dimensional coordinates of the arch ribs on both sides of Pudong and Puxi should always be controlled within the design range during the construction process; ③Closure installation requirements are high, and temperature, wind, load and other factors have a great impact.[18]
In March 2019, Shanghai Pujiang "Fast Tour Line" was opened for trial operation, and Lupu Bridge is within the scope of "elite tour" of Pujiang.[19]
Lupu Bridge belongs to the "elite tour of Pujiang River"
Value significance
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Lupu Bridge is another bridge crossing the Huangpu River in Shanghai after Nanpu Bridge and Yangpu Bridge. It is also the first river crossing project built in the busy urban traffic area when Shanghai enters the 21st century;In view of other geographical locations and characteristics of the times, the new and spectacular shape of Lupu Bridge after completion will add a heavy touch to the city of Shanghai in the new century and become an important new landscape.(Review of Traffic and Transportation)[4]
