KR20170005565A - Site installation heavy(Demolition of reinforced Con'c member) lifting eye - Google Patents

Abstract

The present invention reduces the anxiety factor of the existing member hanger in the lifting, moving and mounting operation of the existing members of the reinforced concrete structure at the construction site, In-house construction weight is used to simplify work, reduce construction costs, reduce environmental pollution, and safely weigh lifting work by constructing lifting hooks using chemicals and wire ropes directly on members. To a method of constructing a buried lifting loop.
For the construction of the present invention, there is a feature that it is installed through the steps of perforating the hole for the lifting ring, cleaning the inside of the hole, injecting the chemical and filling the wire rope, and hardening, and also working the underwater member according to the type of the chemical.

Description

Site installation heavy (Demolition of reinforced Con'c member) lifting eye}

In the present invention, in order to dismantle existing reinforced concrete members at the construction site and to move and mount the rock masses, a lifting ring of a fill-in type using chemical and wire ropes is installed on the weight member before demolition work and directly fastened to the crane lifting ring To a field-installed lifting ring that can be used.

      Generally, a large crane is used to move concrete members and rock masses generated during the demolition and reconstruction of old structures at a construction site (Fig. 2 (a) and (b)).

      In order to install a lifting line for lifting heavy objects by the above-mentioned working method, the operator must be accessible to the lower part of the demolition member, and considerable time and expense are incurred when the lifting member has a spherical shape or a changed section. There is also a risk of damage to the phosphorus rope in contact with a sharp surface such as a cut surface [Fig. 3].

     [Reference 1] Fischer injection chemical anchor specification. Anchor Tech (Seoul Fine Arts)      [Document 2] Technical data and specifications of HILTI injection mortar. HILTI Korea      [Document 3] Report on the design of the port facility of Asan Industrial Base (twice).              1.8.3. BLOCK Holding and Calculation 1.10.2. CON'C BLOCK holding bill.              Incheon Regional Ocean and Incheon Port Construction Office      [Literature 4] Construction of the first phase wharf construction and other construction works of Hwasun-Song Port.       1999. 5. BLOCK Holding Recalculation Land, Marine and Fisheries Bureau

 The present invention relates to a reinforced concrete structure using a crane, in which it is difficult to access the reinforced concrete structure by moving the reinforced concrete structure directly or by moving the reinforced concrete structure, And it is an object of the present invention to make it possible to easily and safely lift a member of an irregular shape which is difficult to be installed by a wrapping method of the present invention.

  The present invention relates to a method for constructing a crane ring and a lifting rope ring by using a chemical and a wire rope directly on the absence of a weight in a moving and mounting operation of a dismantling member and a retaining mass of a conventional reinforced concrete structure using a crane, And the lifting and moving of the weight member can be safely and easily used.

   In the case of the on-site set-up ring according to the present invention, it is necessary to wrap the member, which is a problem in the conventional lifting method, with a lifting rope, a work member having difficulty in approaching the lifting rope, (Pulling out of the member, breakage of the punching of the member) and the roughness of the work can be secured and facilitated. In the case of the removal of the slab member, the lifting of the lifting rope It is possible to secure safety by reducing cost due to hole drilling, reducing the generation of environmental pollutants (sludge) and simplifying the process of the work.

1 is an installation state diagram according to an embodiment of the present invention.
(A) On-site installation
(B) Installation photograph
Fig. 2 is a schematic view of a typical lifting rope installation example
(A) Use of lifting rope for members
(B) In the case of lifting a used member after lifting the core hole
Fig. 3 is a cross-sectional view showing a state in which the member is in contact with the sharp surface of the cutting member
Fig. 4 (photograph) shows an example of a general method of lifting a cutting member
(A) When we enclose professional member in salvage
Disadvantages: The calculation of the center of gravity should be reliable,
Risk of cutting by friction, worker's space access to cover member
Must be secured.
(B) When the lifting rope passes through the lifting hole
Disadvantages: There is a risk of cutting by the rubbing of the rope,
The amount of environmental pollutants (sludge) generated, the worker's
Space access should be secured.
(C) When lifting lugs (steel lugs + anchor bolts) of steel are installed on the lifting members
Disadvantages: Cost of production of steel (LUG), hole drilling for anchor bolt installation
The construction due to the interference of reinforcing bars and aggregates may be coarse,
Uncertainty of adhesion of anchor
(D) In the case of using a rope loop to penetrate the hole in the core hole
Disadvantages: excessive construction cost, high amount of pollutants (sludge) generated, center of gravity
The calculation should be assured and the deformation and perforation holes
And round bar gap, it is likely to be caused by the destruction of base metal.
5 (photo) shows a structure for confirming cavitation below the Jamsil underground mall structure
Bottom entry opening Cutting member during cutting operation Convex
The contents of the broadcast material falling to the underground joint part of the cutting member
Fig. 6 (photograph) shows an example of the present invention, in which the on-site installation weight (the reinforced concrete demolition member)
Construction order
(A) Hole drilling (Hammer drill)
(B) Internal cleaning of holes (compressed air)
(C) Chemical injection and wire rope purchase
(D) Pulling of lifting hooks and test of breaking test of base material
Fig. 7 (photograph) shows the construction example of the present invention (the first small hydro-
Power plant)
8 (photograph) shows an example of construction of the present invention (Korea South-East Power Co., Ltd. Youngheung Thermal Power Division,
Power plant)
Fig. 9 (photograph) shows a construction example (irregularly sectioned relief)

    The present invention will now be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the minimum compressive strength of the member should be at least 20 MPa in order to install the wire rope. In the case of the wire rope to be used, there should be no change in section (thickness) The breaking angle of the base material [Fig. 1. 120] shall be such that interference does not occur. After drilling the hole, the inside of the hole should be thoroughly cleaned, and the amount of chemical injected should be sufficient to overflow the wire rope penetration. Wire rope should be thoroughly cleaned before installation to remove oil from the surface, and chemical curing time after installation should follow the manufacturer's management standards.

1. It is possible to work in land and underwater. In case of demolition members, it is unnecessary to drill a separate lifting hole for lifting rope hook, so it is possible to reduce the construction cost (about 1/3) and reduce the amount of sludge Unlike ordinary steel lugs, wire ropes are excellent in tensile strength, toughness and ductility, and are easy to use repeatedly (stacking and demounting).

2. It is not necessary to move to the back of the member to cover the pro member with lifting, so that it is possible to work in a place where it is difficult to approach the back side of the member for simplification of work and for hooking work, The risk factors for

3. After the blasting and crushing during the rock excavation work of the city area, the crushing work is carried out with the appropriate size to load on the transportation vehicle. However, the civil complaints are caused by the noise, but the crane of field installation is installed. It can be applied to general trucks as well as trucks, and complaints due to noise can be minimized by the operation of a breaker (Subaru), which is a follow-up operation after loading.

4. Disposal of disasters such as collapses

5. It is easy to use as an alternative construction due to re-corrosion when repairing marine deformation block.

6. Quarrying of quarries can facilitate transposition work.

100: On-site installation lifting hook (lifting force, pulling force action)
110: On-site installation lifting ring (no pulling force immediately after installation)
120: Extraction angle of concrete base material
130: Perforated hole (2 ~ 5mm larger than wire rope diameter)
200: Wire rope or load chain 210: Lifting rope friction zone
300:

Claims (1)

On-site installation to facilitate the lifting and movement of heavy concrete members and carcass
Construction method of lifting ring

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