A hoisting method for an L-shaped reinforcement cage of an underground diaphragm wall

Abstract

The invention provides a method for hoisting an L-shaped steel reinforcement cage of an underground diaphragm wall. The method comprises the steps of hoisting preparation, hoisting point determining and hoisting, wherein in the hoisting point determining process, according to a static distance calculation method, firstly, the position of the gravity center of the L-shaped cross section of the L-shaped steel reinforcement cage is determined, then, three sets of hoisting points can be determined on the cross section by combining the mechanics principle and the characteristics of the L-shaped steel reinforcement cage and according to the position of the gravity center, meanwhile, multiple hoisting cross sections are determined in the longitudinal direction of the steel reinforcement cage, and reinforcement steel bars are additionally arranged at all the hoisting point positions of the steel reinforcement cage. The method for determining the hoisting points is scientific and reasonable, the hoisting method is safe, reliable and high in maneuverability, one-time balanced hoisting and lowering of the large-size L-shaped steel reinforcement cage are achieved, the large-size L-shaped steel reinforcement cage can enter a trough smoothly, and construction efficiency is high. Meanwhile, the steel reinforcement cage cannot deform in the hoisting process, construction quality is ensured, the construction safety in the hoisting process can be ensured, and the method is quite suitable for hoisting the large-size L-shaped steel reinforcement cage.

Description

technical field [0001] The invention relates to the technical field of hoisting, in particular to an underground continuous wall suitable for foundation pit enclosure structures in subway projects, water conservancy projects or housing construction projects The hoisting method of shaped steel cage. Background technique [0002] In building construction, hoisting of steel cage is a very important link. At present, there are many lifting methods commonly used for steel cages, such as wood or steel pipe reinforcement methods and steel reinforcement methods. These two methods are time-consuming and labor-intensive, and cannot guarantee that the lifting will not deform; There will be cracking phenomenon, there is a safety hazard. At present, the overall hoisting technology of large steel cages has been widely used, and the selection of the hoisting point of the steel cage in this technology is the key technology of hoisting construction. The reasonable selection of the hoistin...

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