CN204825924U - Square steel tube concrete waist rail - Google Patents

Abstract

The utility model discloses a square steel tube concrete waist rail, by square steel tube, inside concrete, bolthole and steel casing pipe constitute jointly, wherein, square steel tube reserves last side has the injected hole, inside concrete is poured into into by the injected hole, fill in square steel tube's cavity, four sides at two square steel tube connection positions all are equipped with the bolt hole, the outside parcel of connecting the position has the steel casing pipe, processing has the bolt hole on four sides of steel casing pipe, so that be connected with square steel tube, square steel tube's inside and outside both sides processing has penetrating bolthole, so that skyhook. The utility model discloses compare with traditional waist rail, it is not enough to improve current waist rail bearing capacity, construction procedure shortcoming such as loaded down with trivial details, and have material saving, economic benefits advantage such as obvious.

Description

A square steel tube concrete waist beam

technical field

The utility model relates to the field of foundation pit support, in particular to a waist beam used in foundation pit support structures.

Background technique

At present, the waist beams used in foundation pit support mainly include steel beams and reinforced concrete beams. Reinforced concrete beams are widely used due to the advantages of high rigidity, good integrity, and flexible section shape and size, but they have the disadvantages of heavy weight, complicated construction procedures, and are prone to cracks. Outdoor construction is greatly affected by the climate; The advantages of small size and convenient installation have been gradually developed and applied in recent years, but steel beams require high connection precision, and have disadvantages such as easy pressure instability and poor fire resistance.

Contents of the invention

The purpose of the utility model is to overcome the problems and deficiencies of the existing waist beams, and provide a square steel pipe concrete waist beam, which can improve the shortcomings of the existing waist beams such as insufficient bearing capacity and cumbersome construction procedures, and has the advantages of saving materials and obvious economic benefits. advantage.

The utility model is achieved through the following technical solutions:

A square steel pipe concrete waist beam, including square steel pipes, internal concrete, anchor holes and steel sleeves, wherein grouting holes are reserved on the upper side of the square steel pipes, and the internal concrete is injected through the grouting holes to fill the voids of the square steel pipes In the cavity, bolt holes are provided on the four sides of the connection part of the two square steel pipes, and the outer side of the connection part is wrapped with a steel casing, and the four sides of the steel casing are processed with bolt holes to connect with the square steel pipe. There are transparent anchor holes processed on the inner and outer sides of the inner and outer sides to facilitate the installation of anchor rods.

The utility model has the advantages of a square steel pipe concrete waist beam:

(1) The steel pipe and concrete work together to increase the structural rigidity, enhance the yield resistance, and improve the bearing capacity;

(2) There are fewer parts in the steel pipe concrete waist beam, the structure is simple, the material is saved, and the economic benefit is remarkable;

(3) The steel pipe can bear the load and structural weight during the construction stage, and the construction process is less affected by the concrete curing time.

The implementation method of a square steel pipe concrete waist beam of the utility model is as follows: firstly, reserve holes such as grouting holes, bolt holes and anchor holes on the upper side of the square steel pipe; then, hoist the steel pipe to the installation position of the waist beam, and Triangular brackets are used for temporary support, and steel sleeves are used to connect multiple sections of square steel pipes, and the connection method is bolt connection; finally, the anchor rod is installed through the anchor rod hole, after the anchor head is tightened and the square steel pipe is fixed, the grouting The hole is filled with concrete and compacted.

Description of drawings

Fig. 1 is a structural schematic diagram of a square concrete filled steel tube beam of the utility model.

Fig. 2 is the installation diagram of the utility model.

Legend: 1-square steel pipe; 2-internal concrete; 3-bolt hole; 4-steel casing; 5-bolt hole; 6-grouting hole; 7-triangular bracket; 8-backing plate; 9-anchor head ; 10 - Anchor rod.

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in detail:

A square steel pipe concrete waist beam as shown in FIG. The upper side of the square steel pipe 1 is reserved with a grouting hole 6, which is the entrance of the internal concrete 2, and the four sides of the connecting parts of the two square steel pipes 1 are provided with bolt holes 5; the internal concrete 2 is formed by grouting The hole 6 is injected and filled in the cavity of the square steel pipe 1; the anchor hole 3 is symmetrically processed on the inner and outer sides of the square steel pipe 1, so as to install the anchor rod 10; the four sides of the steel casing 4 are processed with The bolt hole 5 is wrapped in the connection part of the two square steel pipes 1, and the connection method can be bolt connection.

As shown in Figure 2, when installing, firstly open grouting holes 6, bolt holes 5 and anchor rod holes 3 on the square steel pipe 1; then, hoist the steel pipe 1 to the installation position of the waist beam, and use a triangular bracket in advance 7 for temporary support, steel sleeves 4 are used to connect the multi-section square steel pipes 1, and the connection method is bolt connection; finally, install the anchor rod 10 through the anchor rod hole 3, tighten the anchor head 9, and fix the square steel pipe 1 , inject concrete through the grouting hole 6 and compact it.

Claims (1)

1. A square steel pipe concrete waist beam, comprising square steel pipes, internal concrete, anchor holes and steel sleeves, is characterized in that the upper side of the square steel pipes is reserved with grouting holes, and the internal concrete is injected through the grouting holes and filled in In the cavity of the square steel pipe, there are bolt holes on the four sides of the connecting part of the two square steel pipes. Connection, the inner and outer sides of the square steel pipe are processed with transparent anchor holes for the installation of anchor rods.