Concentric hoisting method for T-shaped reinforcement cage with diaphragm walls

Abstract

The invention provides a concentric hoisting method for a T-shaped reinforcement cage with diaphragm walls. According to the technical scheme, a concentric hoisting device comprises a main hoisting rope and an auxiliary hoisting rope, wherein four hoisting fasteners are arranged on two sides of the main hoisting rope; the two hoisting fasteners are arranged on the left side of the main hoisting rope; the other two hoisting fasteners are arranged on the right side of the main hoisting rope; two control fasteners are arranged in the center of the main hoisting rope; the auxiliary hoisting rope is provided with a hoisting fastener; the hoisting fasteners of the main hoisting rope are hoisting ropes tied on wing walls; the control fasteners are hoisting ropes tied on an abdominal wall; the hoisting fasteners are stressed simultaneously, but the control fasteners are not stressed; and after the main hoisting rope overturns until the control fasteners are stressed, the reinforcement cage is vertical. By the technical scheme, the main hoisting rope is only provided with the two control fasteners, and the economic input is low. The concentric hoisting device is easy to operate; and after the reinforcement cage is hoisted, a cage body is vertical, so that the reinforcement cage enters a groove conveniently, walls of the groove are prevented from being scratched by the cage body, sediments on the bottom of the groove are avoided, secondary slag removal is avoided, the engineering quality is ensured, extra objects are not required to be hoisted, the hoisting device only needs to meet requirements on hoisting of the reinforcement cage, the cost is low, and the economic benefit is high.

Description

technical field [0001] The invention relates to the technical field of hoisting methods, in particular to a concentric hoisting method of a T-shaped ground-connected wall reinforcement cage. Background technique [0002] The sheet pile wharf with the ground wall structure adopts the ground wall design, and the ground wall is designed as a T-shaped ground wall. It is a new breakthrough to use the T-shaped ground wall in the wharf project. The length of the ground wall wing wall is 4.5 m, the length of the web wall is 2.5m, the wall thickness is 0.8m, and the depth of the groove is 36m. There are 72 sections of ground connection walls. The hoisting technology of the ground connection wall reinforcement cage is particularly critical. Installation and whether there will be sediment will affect the quality of concrete, and even determine whether the T-shaped ground connection wall can be successfully implemented. [0003] The disadvantage of hoisting the steel cage with eccentri...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of hoisting the reinforcement cage with an eccentric crane is that the cage body is not vertical after being hoisted. During the process of entering the tank, the cage body scratches the tank wall seriously, which will cause the thickness of the sediment at the bottom of the tank to exceed the standard, and even cause the tank wall to collapse and the steel cage to tilt. When entering the groove, the friction between the cage body and the groove wall, and the friction between the cage body and the joint pipe all increase, which will make it difficult for the steel cage to enter the groove, or even fail to complete the groove; Making a special large-scale steel lifting frame requires a large economic investment. When lifting, the steel cage and the steel lifting frame need to be lifted at the same time. The lifting weight far exceeds the weight of the steel cage itself. The requirements for lifting machinery and equipment are high, the cost is high, and the lifting operation is relatively complicated.

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