The principle, characteristics and applicable range of hydraulic grab method
Pageviews： Release Time：2017-11-21
In recent years, with the development of construction machinery and equipment renewal and technology continues to improve, the cast-in-place reinforced concrete underground continuous wall construction combined with the top-down method, supplemented by the bracing system, the construction method of deep foundation pit has become mature in technology and economy, more reasonable, provide conditions for underground engineering to a deeper and wider space the development of. Hydraulic grab is one of them. Today Xiao Bian tells you about the principle, characteristics and applicable scope of hydraulic grab.
I. principle
1, after the diaphragm wall on both sides of the longitudinal axis of the diaphragm wall is constructed, the section is excavated into a groove.
2. Prepare high quality mud and inject into the channel section.
3, after the groove, in the groove section of prefabricated reinforced cage.
4. Pour the underwater concrete into wall with the method of pipe anti top.
5, the adjacent wall section is connected with the integral form of the cast-in-place reinforced concrete continuous wall.
Two, characteristics
1, the underground continuous wall segment mining into groove, high quality mud wall protection, automatic pilot alignment, deviation correction, integrity, smooth surface, high verticality.
2, according to the form of joint wall thick where the concrete wall pouring water, anti permeability, shear, bending ability.
3, reliable near construction (construction) building construction, make full use of construction land.
4 、 equipped with microcomputer control system, the groove has high degree of automation, and the quality of the groove is reliable as the digging and measuring.
5, the construction of a high degree of mechanization, low labor intensity, fewer construction personnel, high efficiency.
Three, scope of application
In the light of all kinds of engineering geological conditions except for medium and gentle bedrock, the construction of underground retaining walls or structural walls, such as structures, structures and hydraulic structures, etc..
