Innovative technology-prestressed fish-belly foundation pit steel support technology-intelligent pile planting technology-QiangJin Foundation

Home > Technology

Innovative Technology

Prestressed fish-belly type foundation pit steel support technology

It has the characteristics of large space, high rigidity, strong stability, small deformation and convenient construction. Compared with the traditional internal support, it can shorten the construction period and reduce the cost. It has been successfully used in more than 100 projects in Shanghai, Jiangsu, Zhejiang, Guangdong, Anhui, Shandong, Beijing, Hubei, Jiangxi, Yunnan and other places, with an excavation depth of 22 meters. Editor-in-chief of provincial construction methods and national regulations.

Large diameter vibrating immersed tube gravel pile technology

Large-diameter vibrating immersed tube crushed stone pile is a deep and large-diameter dense pile body composed of crushed stone formed by sinking the steel feed pipe into the design depth by using high-power vibrating hammer as the driving force, filling the gravel into the hopper and silo, and then pulling out the feed pipe through vibration.Compared with the traditional technology of gravel pile, Shanghai Qiangqiang has mature construction technology and experience, and has dozens of gravel pile construction equipment, which has been successfully used in many large-scale foundation treatment projects at home and abroad.

Water DCM (stirring pile)

The offshore DCM construction method integrates multiple research and development technologies such as underwater soil cutting and stirring, accurate injection of cement slurry, high and low slurry nozzle interchange, environmental protection treatment system, and intelligent control construction. The core technologies of intelligent construction such as cement slurry mixing and grouting system, drilling and lifting and pile-making system have broken the monopoly of Japan and South Korea in this field, and have 4 DCM engineering ships.

Water PVD (Plastic Drainage Board)

The offshore fully hydraulic intelligent PVD construction technology is an innovative technology, with strong penetration of hard soil layers and efficient construction. 12 30-meter-long drainage boards are constructed in one and a half minutes. Domestic counterparts generally use vibrators to construct 2-4 pieces at a time. And the construction time is longer. In the three-run project of Hong Kong Airport, it has been praised by the Hong Kong Airport Authority for many times. A total of 20 million meters of PVD (plastic) drainage boards have been constructed on the water. The equipment has been operated very successfully, which has refreshed the engineering community. Owns 3 PVD engineering ships.

Intelligent pile planting technology

Using a soil cutting pulverizer, combined with an intelligent control system, after the soil is cut and pulverized, the cement slurry is injected into the cement slurry for high-speed cutting and fully mixed to form fluid cement soil, and the prefabricated pile is immediately implanted to form a stiff composite pile. It has the advantages of economy and environmental protection, and has great promotion value especially in soft soil areas.

Undisturbed soil borrowing cast-in-place pile technology

This technology is suitable for the construction of supporting piles in foundation pit projects. The length of the piles can reach more than 30 meters. After taking out the undisturbed soil with special equipment, concrete is poured immediately, and the reinforcement cages are inserted to form reinforced concrete piles. Eliminate mud discharge, reduce project cost, and be green and environmentally friendly. It is also the construction solution adopted after the stipulation in the document No. 645 of Hu Jian Jiao (2012) that "for bored piles with a diameter of more than 1 meter, GPS-type bored piles shall not be used for mechanical construction".

BIM-based foundation pit safety automatic monitoring, early warning and control system

Focusing on the field of hazard source monitoring in urban foundation pit and slope engineering (geological disaster control engineering), through the open data interface, BIM is used as the information carrier of the project, GPS/Beidou location capture and GIS are the information carrier of the project group, combined with automatic monitoring , Mobile Internet technology, integrate and summarize the monitoring data collected automatically in the system. At the same time, an early warning mechanism for the safety monitoring of foundation pits and slopes is established, and real-time grading alarms are carried out.

FDP fast soft ground treatment technology

This technology can significantly reduce the adverse effects of well resistance and smearing effect on drainage consolidation, reduce the blockage of drainage channels, eliminate the blind area of drainage channels in traditional vacuum preloading, avoid the dependence on sand resources in traditional technology, and ultimately achieve shortening. The construction period and the purpose of saving cost.

DCM stirring reinforcement and foundation treatment technology

The land DCM construction method integrates many research and development technologies such as soil cutting and stirring, accurate injection of cement slurry, high and low slurry nozzle interchange, environmental protection treatment system, and intelligent control construction, and masters leveling system, cement slurry mixing and grouting The core technologies of intelligent construction such as system, drilling and lifting and pile-making system have broken the monopoly of Japan and South Korea in this field. Currently, there are 15 land DCM pile drivers.

RCP stiff composite foundation treatment technology

Based on the advantages of gravel piles, cement-soil rotary jetting mixing piles and rigid piles, a variety of combination methods are adopted according to soil conditions and soft foundation treatment requirements. Aggregate gradation and other parameters can give full play to the friction resistance and end resistance of the soil around the pile and match the strength of the pile body material to produce a sufficiently high single pile bearing capacity, and can significantly improve the soil strength between the piles. It is suitable for coastal and riverside soft foundation treatment.

NEW MATERIAL

: GS soil hardener

GS soil hardener, also known as soil curing agent, is a new type of inorganic powdery hydraulic cementitious material, which can replace 42.5, 52.5 ordinary Portland cement as soil curing material.Its main component is solid waste from industrial enterprises.Compared with cement, it can greatly improve the strength of reinforced soil and reduce the project cost.

: CFST column pile

A prefabricated pile used for supporting structure columns of foundation pit engineering, which is composed of square or round steel pipes filled with concrete (mortar), and is processed and manufactured according to different lengths. Recycling, compared with traditional cast-in-place piles with lattice columns, saves cost, shortens construction period, and reduces material consumption. Shanghai Strong has been successfully used in many projects.

: Ready-mixed fluid-solidified soil

The ready-mixed fluidized solidified soil is a mixture of various discarded ballast soil, soil hardener and water at a certain ratio and achieves a certain performance index. Its slump is 80mm ~ 220mm and its unconfined compressive strength is 0.4 ~ 15MPa. It is a kind of green and innovative material, which can replace the traditional concrete, gray soil foundation and crushed stone concrete in some fields, and has great social significance of energy saving and emission reduction, and comprehensive utilization of industrial solid waste.

PARTICIPATE IN THE COMPILATION OF NATIONAL STANDARDS

143 PATENT CERTIFICATIONS

上一个

下一个

Contact us

Shanghai QiangJin Foundation Engineering Co., Ltd.

Tel:400-100-2850

Address:No. 289, Huixian Road, Jiading District, Shanghai

Site navigation

Home About us Pile foundation engineering Cases Technology Equipment News

Qr code of public account

Mobile QR code

Site map Technical support: Niu Shang Shares

400-100-2850

Business contact