Of steel structure of foundation pit support technology of prestress the stomach, is based on the principle of prestressed, in view of the traditional concrete support, steel support of foundation pit deformation control ability, through a large number of engineering research and application practice, developed a kind of deep foundation pit support structure within the system, it is composed of the stomach beam bent (high strength low relaxation of steel strand as a member) , to brace, Angle brace, column, beam, contact bar, high strength contact, prestressed loading device and other standard components, forming a plane prestressed support system and three-dimensional support structure system.
Details >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.
Details >Jet mixing pile (DCM), underwater cutting soil mixing, cement grout injection, high and low accurate slurry nozzle swaps, environmental protection treatment system, construction of intelligent control technology in a body, the master of engineering ship mobile positioning system, leveling system, mixing system, drilling and grouting cement with the drilling pile system intelligent construction such as the core technology, Break the monopoly of Japan and South Korea in this field.
Details >The PVD (plastic drainage board) technology developed by Qiangqiang Foundation Company has strong penetration of hard soil layer and high efficiency in construction. It can construct 12 30-meter-long drainage boards in one and a half minutes, while domestic peers generally use vibrators to construct 2-4 boards at a time, and the construction time is longer.
Details >Using special mixing grouting rig drilling and digging on the design of pile location, at the same time bit in direct injection or rotary jet cement slurry curing agent (and spray into the compressed air when necessary) and the foundation soil by mixing, the formation of columnar cement soil, instant will be prefabricated pipe pile core material depend on gravity and auxiliary equipment such as inserted in the soil, the pile lateral and end cement-soil after curing, It is integrated with the pile. According to the soil layer, the cement injection amount and the diameter of cement soil can be increased at the tip of the pile or the soft soil layer to improve the pile bearing capacity.
Details >Undisturbed soil-taking cast-in-place pile can be divided into full support cylinder cast-in-place pile and pressure cast-in-place pile. Undisturbed soil full protecting tube piles the craft adopts full steel liners built-in spiral blade cutting soil formation under the double power drill of pile diameter, remove soil liners in the original state at the same time, reinforcing cage under water or inserting reinforcing cage after pouring concrete, reinforced concrete pile is formed after pull out steel liners, especially suitable for greater influence on the compaction of soil. The technology of undisturbed earth - taking and press-poured concrete pile inherits the advantages of long auger - hole press-poured pile.
Details >Focus on the city foundation pit and slope engineering (geological disaster management engineering) hazard source monitoring field, through the open data interface, toBIMFor the project information carrier,GPS/The Beidou position is in harmonyGISAs the information carrier of project group, combining with automatic monitoring and mobile Internet technology, the monitoring data collected automatically on site are integrated and summarized in this system. At the same time, the early warning mechanism of pit and slope safety monitoring is established to give real-time hierarchical alarm.......
Details >FDP fast soft foundation treatment technology is a soft foundation treatment technology based on the principle of vacuum preloading technology and a number of innovative technologies.
Details >DCM mixing reinforcement and foundation soil treatment technology is set to the stirring, cement grout injection, high and low accurate cutting slurry nozzle swaps, environmental protection treatment system, construction of intelligent control technology at an organic whole, grasp the leveling system, cement slurry mixing and grouting system, drilling and extraction system of drilling pile system intelligent construction of core technology, break the monopoly of Japan, South Korea in the field, At present, Strong Foundation Company has 15 land DCM pile machines.
Details >RCP strong pile is a combination of sand and stone pile, cement and soil rotary shotcrete mixing pile and rigid pile (precast concrete pile, cast-in-place pile and steel pile) bearing and construction technology advantages, according to the soil conditions, soft foundation treatment requirements, adopt a variety of combination methods By optimizing the pile diameter, pile length, ash content, aggregate grading and other parameters, it can give full play to the friction resistance and end resistance of the soil around the pile and match the strength of the pile material to produce a high enough single pile bearing capacity, and can significantly improve the strength of soil between piles.
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