CN206189610U - Sliding connection between steel member and concrete - Google Patents

Abstract

The utility model discloses a sliding connecting piece between a steel member and concrete, which is composed of a connecting piece body, the connecting piece body includes an anchor fixed in the concrete main body, the base of the anchor is provided with at least one Bar-shaped holes, each of which is provided with bolts fixed on the steel member and nuts matched with the bolts, each of the bar-shaped holes is provided with a protective cover, and the lower part of the protective cover is provided There is a cavity corresponding to the strip hole and accommodating the sliding of the nut and the bolt along the strip hole. The utility model allows a certain relative sliding between the steel component and the concrete under the condition that the relative separation between the steel component and the concrete does not occur, and avoids the problem of concrete cracking caused by the tension of the concrete component.

Description

A sliding connection between a steel member and concrete

technical field

The utility model relates to construction engineering, in particular to a sliding connector between steel components and concrete.

Background technique

In the composite structure, the connection between the steel member and the concrete is generally connected by studs, and the existing connectors ensure the joint work by limiting the relative slippage between the steel member and the concrete. However, for some parts or certain areas, it is necessary for the steel member and the concrete member to slide in one direction under the premise that they cannot be separated. For example, steel-concrete continuous composite beams or continuous composite slabs, the bending moment near the intermediate support is mainly negative bending moment, and the existing connectors will limit the relative slip between steel members and concrete in the negative bending moment area. Tensile stress is generated inside, and even the concrete cracks. Therefore, under the condition of ensuring that the concrete and steel members do not separate from each other, reducing the combined action between concrete and steel members in certain directions in the negative moment zone is the key to avoiding concrete cracking in the negative moment zone. There is also a kind of anti-pull and non-shear connector that slides through the compression deformation of the foam plastic because it adopts the method of arranging foam plastic on the sliding stroke. The lateral pressure of the foam produces initial compression deformation or damage, and the concrete occupies the sliding channel, thereby reducing the sliding ability and working reliability of the connecting piece.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art and provide a sliding connector between the steel member and the concrete. The connector allows the steel member to A certain amount of relative sliding occurs between the member and the concrete.

The technical solution adopted by the utility model is: a sliding connector between a steel member and concrete, which is composed of a connector body, the connector body includes an anchor fixed in the concrete body, and the base of the anchor There is at least one bar-shaped hole, and each bar-shaped hole is provided with bolts fixed on the steel member and nuts matched with the bolts, and each bar-shaped hole is provided with a protective cover. The lower part of the protective cover is provided with a hollow chamber corresponding to the bar-shaped hole and accommodating the sliding of the nut and the bolt along the bar-shaped hole.

The bolts in each of the bar-shaped holes are provided with nut limiting sleeves.

The anchor is an I-shaped structure, and at least one strip-shaped hole is provided on both sides of the base.

The protective cover is made of foam plastic material.

A protective shell is provided on the outer surface of the protective cover.

The beneficial effects of the utility model are:

1. In the utility model, a strip hole is set on the base of the anchor piece. The bolts fixed on the steel member by welding or other methods pass through the strip hole and connect with the anchor piece. The protective cover made of material and the protective shell set on the outer surface of the protective cover, and the anchors are poured in the concrete main body. Through the above measures, the steel components are allowed to be separated from the concrete main body without separation. One-way sliding occurs between the component and the concrete, avoiding the problem of concrete cracking caused by the tension of the concrete component;

2. The utility model is equipped with nut limit sleeves on the bolts, which avoids the problem of losing the sliding function caused by too tight nuts, and also avoids the problem of mutual separation of steel components and concrete caused by too loose nuts;

3. Compared with the existing connectors of the same type, the utility model avoids the damage and deformation of the foam plastic board due to the pressure and vibration during the concrete pouring process because the foam plastic is only used as a sealing material and the protective shell is arranged on the surface ;

4. The utility model has the characteristics of simple and compact structure, low cost, convenient construction and reliable operation.

Description of drawings

Figure 1: Structural schematic diagram of the utility model;

Figure 2: Schematic diagram of the decomposition structure of the utility model;

Figure 3: Schematic diagram of the cross-sectional structure of the utility model after construction.

Drawings: 1. Anchors; 2. Strip holes; 3. Steel components; 4. Bolts; 5. Nuts; 6. Protective covers; 7. Empty chambers; 8. Nut limit sleeves; ; 10. Concrete body.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figures 1 and 2, a sliding connection between a steel member and concrete includes an anchor 1 fixed in a concrete body 10, and at least one bar-shaped hole is provided on the base of the anchor 1 2. In this embodiment, the anchor piece 1 is an I-shaped structure, and one strip-shaped hole 2 is provided on both sides of its base. Each of the strip-shaped holes 2 is provided with a bolt 4 fixed on the steel member 3 by welding or other means and a nut 5 matched with the bolt 4, and each of the bolts 4 is provided with a nut limit sleeve 8. Avoid the problem of losing the sliding connection function due to the nut 5 being pressed too tightly on the base of the anchor 1. At the same time, the nut 5 can be tightened on the nut limit sleeve 8 to avoid the separation of the steel member 3 and the concrete due to the loosening of the nut 5 question. Each of the strip holes 2 is provided with a protective cover 6 made of foamed plastic material, and the lower part of the protective cover 6 is provided with a set corresponding to the strip hole 2 and accommodates the nut 5 and the The bolt 4 slides along the hollow chamber 7 of the strip hole 2; the outer surface of the protective cover 6 is also provided with a protective shell 9 to avoid damage to the protective cover 6 made of foamed plastic material during the pouring of concrete Deformation problems occur.

As shown in Figure 3, the utility model is used after building construction. The anchor piece 1 is poured in the concrete main body 10, and the bottom is connected with the steel member 3 through bolts 4 and nuts 5. The anchor piece 1 can be placed along the strip hole 2 to slide against the steel member 3 within a certain range, but it cannot slide in the direction perpendicular to the strip hole 2, nor can it be separated from the steel member 3, so that the single Swipe to connect.

Claims (5)

1. the sliding connector between a kind of steel member and concrete, is made up of connector body, it is characterised in that the connection Part body includes the anchoring piece being fixed in concrete main body, and at least one bar hole is provided with the base of the anchoring piece, The bolt and the nut with the bolt matching being fixed on steel member, each described bar shaped are provided with each described bar hole It is provided with protective cover on hole, the bottom of the protective cover is provided with corresponding with the bar hole and accommodates the nut and institute State the plenum chamber that bolt is slided along the bar hole.

2. the sliding connector between steel member according to claim 1 and concrete, it is characterised in that each described bar Nut stop collar is provided with the bolt in shape hole.

3. the sliding connector between steel member according to claim 1 and concrete, it is characterised in that the anchoring piece It is I-shaped structure, the both sides of its base are respectively provided with least one bar hole.

4. the sliding connector between steel member according to claim 1 and concrete, it is characterised in that the protective cover It is made of plastic foam material.

5. the sliding connector between steel member according to claim 1 and concrete, it is characterised in that the protective cover Outer surface be provided with containment vessel.