Bay Area Integration，Traffic first，Underground Road Traffic Supporting Project of Jiaotong University Avenue in Shanghai Cooperation Demonstration Zone, Jiaozhou, Qingdao，Shanggong MachineryTRD-70EConstruction method machine shows construction strength，Excellent performance、The efficiency is excellent、High efficiency，Tamp the foundation and strengthen the foundation for people's livelihood，Help Charming Bay Area Build Regional Access、Sustainable and high-quality complete three-dimensional transportation system，“The Greater Bay Area on Track”Speed up。
The total investment of the underground road traffic supporting project of Jiaotong University Avenue in Shanghai Cooperation Demonstration Zone is 5.9 billion yuan.，Minjiang Road in the south，North to Liaohe Road，The total length is about 4.Seven kilometers。Mainly including road works、Tunnel engineering、Bridge engineering、Rail transit engineering, etc.，The channelization design shall be carried out for the entrances and exits along the direction of Jiaotong University Avenue。
▲Project site
After the completion of the project，Through the construction of underground roads, transit traffic and regional arrival and departure traffic will be quickly separated.，Improve the traffic carrying capacity of road network，At the same time, in order to avoid the interference before and after the project and the waste of investment caused by the phased implementation of the underground road and subway of Jiaotong University Avenue.，Construction and implementation of rail transit，Integrated construction of rail transit and underground roads、Built at one time，Provide a convenient passage for regional traffic。This will ensure the demand for rapid and large-capacity transit traffic relief.，It also takes into account the development process of the area.，Promote group connectivity to be closer，So as to improve the overall traffic quality of the demonstration area.。
▲Schematic diagram after the completion of the project
At the present stage of the project, it is planned to develop the underground space after excavating the existing Jiaotong Avenue.，Excavation depth is about 10~11m，The lower part is a tunnel project.，The upper part is road works.（Including supporting pipelines） ，Synchronously rebuild the existing bridge project of Yuejin River，“In view of the fact that the silty soil layer is widely distributed along the Jiaotong University Avenue，It is also close to the Jiaozhou Bay.，The self-stability is poor，There is a big risk in excavation.，The enclosure structure of the tunnel project adoptsTRDCement mixing wall with concrete support，Steel support form。”
▲TRD-70EConstruction site of construction machine
Construction site，Shanggong MachineryTRD-70EIn the early stage of the construction method, before the excavation of the foundation pit of the project, multi-section waterproof curtain diaphragm wall operation is carried out to control groundwater.，The projectTRDThe total construction volume is about 18860 square meters.， TRDThe length of waterproof curtain is 900m，Wall thickness is 850mm，Wall depth is 17m-26m，Meanwhile, insert 700 at the pile position in the water stop wall*300mmH1366 pieces of section steel，About 6000 tons，Provide strong support for subsequent construction。The project requires that the verticality of the cement mixing wall with equal thickness shall not be greater than 1/300，The wall position deviation shall not be greater than 50mm，Wall thickness deviation shall not be greater than 20mm，Wall depth、There shall be no negative deviation in wall thickness.。
▲Inserted into the construction site of section steel
According to the geological data around the site，The original landform of the area is coastal shoal.，After artificial backfilling and reconstruction,，The geological conditions are complex，Shanggong MachineryTRD-70EWith excellent construction performance and strong product performance, the construction machine effectively guarantees the construction progress of the project.，Equipment with low failure，Stable and accurate，Quickly adapt to construction environment，In the process of construction, different strata can be mixed evenly.，Form high quality walls that are consistent up and down，At the same time, the main working mechanisms of the equipment are equipped with measuring sensors.，Can be applied to the linearity of the wall、Effective monitoring of verticality，Ensure the quality of the wall。In addition，High-quality after-sales service guarantee team of on-site machinery is stationed for 24 hours.，Provide reasonable suggestions for project construction，Carry out professional training and on-site disclosure for construction workers，The moment isTRDEscort of equipment construction。
▲On-site skills training for operators by Shanggong Machinery Service Team
▲Distant view of the site
In 2012, Shanggong Machinery independently developed the first 61 in China.mConstruction capacityTRD-60DProcess machine equipment；In 2017, it launched a low-noise all-electric power in line with urban working conditions.TRD-60EType working machine；Successfully launched in 2018TRD-80EAType working machine,Create the world's deepestTRDConstruction records；In 2019, it was launched to meet the construction of large depth and complex strata.TRD-70D/EType，FormTRD-60/70/80 Three product series；Further expand the product range in 2022，Push outTRD-C50 process machine，Meet the new market demand。
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Domestic key projects，Supporting professional construction equipment。Shanggong Machinery Inherits“Market-oriented product development”Idea，Focus on new infrastructure，Aim at the industry trend with a keen eye，Simultaneous development of R & D strength，To be more useful、Durable、Practical equipment helps more national projects run out“Acceleration”。
