After more than 10 setsTRDAfter the construction method fleet is assembled for the campaign

4 setsDMP-IDigital micro-disturbance mixing pile machine followed closely.

Site of Foundation Pit Observation Meeting of Pudong Airport Phase IV Expansion Project

An observation group of more than 100 people“Onlookers”

Shanggong MachineryTRD、DMPConstruction method

In the largest deep foundation pit project in China

The performance is amazing

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This picture，Extremely comfortable.

▲TAD/DMPConstruction methodConstructionThe scene of the observation meeting

May 10, 2023，“Pudong Airport Phase IV Expansion ProjectTAD/DMPTechnical exchange and observation activities of construction method”It was solemnly held at the site of the fourth phase expansion project of Pudong International Airport.。

▲TAD/DMPConstruction method technical exchange meeting site

This visit and exchange meeting is sponsored by the Geotechnical Mechanics Committee of Shanghai Mechanics Society.，Huajian Group Shanghai Underground Space and Engineering Design and Research Institute，Shanghai Machinery Construction Group Co., Ltd，Shanghai yuanfeng Underground Engineering Technology Co., Ltd.，Shanghai Construction Machinery Factory Co., Ltd.，From survey and design、Construction、Scientific Research Institute、Colleges and universities、More than 100 people from construction technology enterprises and other units gathered.，AroundTADConstruction method: precast enclosure structure、DMPTwo New Techniques of Digitalization of Construction Method for Micro-Disturbance Mixing Pile，From the design、Conduct technical exchanges in construction and other aspects、Discussion and observation of new construction method。

   The largest deep foundation pit project in China

The total area of the foundation pit of the fourth phase expansion project of Pudong International Airport is about 34.Million m2，The general excavation depth is about 18.6~30.7 m，The maximum excavation depth is about 36.7 m，It is the largest deep foundation pit project in China.。There is a maintenance area around the foundation pit.、Energy Center、Sensitive protection objects such as airside MRT lines。At the same time，Multiple connected confined aquifers are distributed in the deep layer of the site.，During the construction of foundation pit, the maximum reduction of confined water is 30m。Foundation pit engineering is complex、 It is difficult to control deformation and confined water。

▲Site of Pudong International Airport Phase IV Expansion Project

In the foundation pit engineering, the construction method of underground continuous wall combined with ultra-deep cement-soil mixing wall with the same thickness is comprehensively adopted as the suspended waterproof curtain.、Pile and wall in one、TAD Construction method: precast enclosure structure、Prestressed tubular pile enclosure structures，Assemble type section steel combined support、Ultra-high pressure jet grouting、DMP A series of new green energy-saving and environmental protection technologies, such as digital micro-disturbance mixing piles, etc.。

        Create and share new construction methods and technologies

Exchange meeting site，It is presided over by Wu Jiangbin, Chief Engineer of Shanghai Underground Space and Engineering Design Institute of Huajian Group.。

▲Chief Engineer Wu Jiangbin presided over the meeting.

The first agenda of the meeting，First, Song Qingjun, Deputy Engineer of Shanghai Underground Space and Engineering Design and Research Institute of Huajian Group、Wang Boyang, project engineer of Shanghai Machinery Construction Group Co., Ltd.TADConstruction method of prefabricated diaphragm wall、TADPrinciple and characteristics of construction method、Equipment selection、Construction process、Report on construction method improvement and other aspects of the meeting。

▲Song Qingjun, deputy chief engineer, made a report on the meeting.

 

▲Wang Boyang, the project engineer, made a report on the meeting.

 

TADThe construction method is the construction method of the canal type cutting and assembling type underground continuous wall.。In the construction method, a prestressed mortise and tenon mechanism is inserted in the middle of a channel-type cutting cement soil continuous wall{Lock catch}Precast reinforced concrete wall panel，Construction technology for forming fabricated underground continuous wall，Compare with that traditional diaphragm wall construction technology,, TADThe construction method has the advantages that the occupied space is small,，Strong adaptability，And that construction period is short，Green environmental protection and other advantages。

▲Shanggong MachineryTADSite of construction method exhibition area

 

▲Shanggong MachineryTADConstruction method construction case

Shanghai Construction Machinery Factory Co., Ltd.、Zhejiang Jitong Dikong Construction Technology Co Ltd、Coastal and Urban Geotechnical Engineering Research Center, Zhejiang University、Zhejiang Architectural Design and Research Institute、Zhejiang University of Science and Technology、Jianhua building materials（China）Deeply Develop Industry-University-Research Cooperation，YesTADTheoretical calculation of construction method，Wallboard preparation、Systematic public relations for machinery manufacturing, etc.，Initiate a new construction method for building foundation pit support。

The second item on the agenda：Dr. Li Qing, Shanghai Underground Space and Engineering Design and Research Institute, Huajian GroupDMPConference report on the construction method of digital micro-disturbance mixing pile technology。

▲Dr. Li Qing made a report on the meeting.

 

Digital micro-disturbance mixing pile（DMPConstruction method），Apply loading machineryDMP-ISpecial equipment for digital micro-disturbance mixing pile machine，Automatic construction control by digital construction control system，Through the cutting blade on the drill rod and the gunite arranged on the stirring drill bit（Qi）The slurry and the gas ejected from the nozzle jointly cut the soil body，And uniformly stirring the curing agent such as cement and the like with the soil body，Forming a pile body with certain strength and impermeability，Automatic control of underground pressure and slurry discharge of multi-channel special-shaped drill pipes、Exhaust，Realizing the tiny disturbance of the whole pile-forming process to the soil around the pile.，Short nameDMPConstruction method。

▲Shanggong MachineryDMPSite of construction method exhibition area▲Shanggong MachineryDMPConstruction method construction case

DMP-IDigital micro-disturbance mixing pile machine（DMPConstruction method and equipment）A well-known enterprise in the United Nations of Shanggong Machinery、Institute、A new digital construction technology developed jointly by colleges and universities: mixing pile drilling machine，The method is mainly use for solving that problem that the pile body is slightly uneven in the construction proces of the traditional mixing pile.，The level of informatization is low，Construction quality is difficult to control，More replacement soil，The construction disturbance is large，Low pile-forming efficiency and the like。The equipment adopts digital construction technology.，Have high safety and reliability，And that pile quality is high，Small disturbance of surrounding environment，High construction effect and the like，ThroughGPSSetting out of pile position，Pile diameter 850mm，Construction depth up to 45m，By effectively reducing the resistance at the time of deep stirring,，Improve the mixing uniformity of cement soil and the quality of pile formation。The equipment can not only add cutting blades as required,，Prevent clay from adhering to drill pipe and forming mud ball，Reduce the disturbance to the formation，But also has the design of special drilling tools and supporting equipment.，Pile verticality can be controlled at 1/300，The construction efficiency is obvious。  

   DMP-IDigital micro-disturbance mixing pile machine

                   Clusters shine

Warm spring afternoon，Pudong AirportT3. The foundation pit observation site of the project is under construction in full swing.，Observe the scene first.TADObserve the construction site of the construction method。

▲TADConstruction method construction observation site

Later ，Go toDMPConstruction site of construction method，MultipleDMP-IThe Most Beautiful Shanggong Green Composed of Digital Micro-disturbance Mixing Pile Machine，It's spectacular。

▲DMPConstruction method construction observation site

Pudong International Airport Phase IV Expansion Project，It is an important traffic guarantee facility for the future development of Pudong International Airport.。After the completion of the project, the capacity of Pudong Airport will be improved in an all-round way.，To provide basic guarantee for building a world-class international aviation hub。

As this timeTAD/DMPThe witness of the grand event of technical exchange and observation of construction methods，More than 100 delegates took pictures at the construction site.，Create and share new construction methods and technologies。

▲A group photo was taken by the delegates.

Shanggong Machinery is committed to the development and construction of underground space construction and related construction technology research.，Committed to providing customers with the overall solution of underground foundation，Helping National Urban Infrastructure Construction，Always uphold“Professional services，Create value”The idea of，Always insist on common development with customers。Shanggong Machinery will, as always, make use of its deep accumulation in the field of piling machinery.，Fully meet customer construction needs，To provide professional services to our customers，Create value。