CN207597418U - A kind of shaped steel pedestal for the beam prefabricated constructions of T - Google Patents

Abstract

The utility model relates to a shaped steel pedestal for T-beam prefabricated construction, which comprises a concrete foundation, and two ends of the concrete foundation are provided with enlarged foundations, and in the concrete foundation, two columns of vertical anchor bars are pre-buried along the longitudinal direction of the pedestal. A pre-embedded angle steel is respectively welded along the outer sides of the two rows of anchor bars, and the top surface of the pre-embedded angle steel is flush with the top surface of the concrete foundation; The bottom surface of the beam is welded to the top surface of the pre-embedded angle steel; along the longitudinal direction of the pedestal, two channel steel distribution beams are arranged on the top surface of the I-beam, and the channel steel distribution beam and the I-beam are welded; The top plate is welded with a top plate whose width is equal to the horseshoe width of the prefabricated T-beam.

Description

A steel pedestal for prefabricated construction of T-beams

technical field

The utility model relates to the field of bridge prefabricated T-beam construction, in particular to a prefabricated pedestal for T-beam prefabricated construction.

Background technique

T-beams are widely used because of their light weight, high bending strength, strong spanning ability, and saving concrete. T-beams are usually prefabricated in a beam yard, where a plurality of prefabricated pedestals are arranged. During T-beam prefabrication construction, a T-beam formwork is installed on the pedestals, and concrete is poured. The structure of the prefabricated pedestal usually includes a concrete foundation. The two ends of the concrete foundation are provided with enlarged foundations. The top surface of the concrete foundation is generally flush with the ground, and the superstructure of the pedestal is arranged on the concrete foundation. Most of the current prefabricated pedestals still use concrete structures above the concrete foundation. After the construction is completed, the ground must be leveled when the beam field is restored, and the above-ground part of the concrete pedestal needs to be removed. It wastes resources, damages the environment, and affects construction efficiency.

Contents of the invention

The purpose of the utility model is to solve the above-mentioned defects of the current concrete pedestal, and propose a steel pedestal with simple structure, convenient erection and low cost, which can be reused to reduce construction cost and improve construction efficiency.

The technical scheme of the utility model is as follows:

A shaped steel pedestal for T-beam prefabricated construction, comprising a concrete foundation, the two ends of the concrete foundation are provided with enlarged foundations, and it is characterized in that: in the concrete foundation, two rows of vertical anchor bars are pre-buried along the longitudinal direction of the pedestal, A pre-embedded angle steel is respectively welded along the outer sides of the two rows of anchor bars, and the top surface of the pre-embedded angle steel is flush with the top surface of the concrete foundation; The bottom surface of the beam is welded to the top surface of the pre-embedded angle steel; along the longitudinal direction of the pedestal, two channel steel distribution beams are arranged on the top surface of the I-beam, and the channel steel distribution beam and the I-beam are welded; The top plate is welded with a top plate whose width is equal to the horseshoe width of the prefabricated T-beam.

In addition to the base part of the utility model, the rest of the structure is mainly made of section steel, which is simple in structure, convenient to set up, and low in cost. The formwork bottom plate of the beam can reduce the investment and consumption of the formwork during the prefabrication of the T-beam, reduce the cost and improve the construction efficiency.

Description of drawings

Fig. 1 is the top view structural representation of the utility model;

Fig. 2 is a longitudinal sectional side view of the utility model;

Fig. 3 is the lateral sectional view of the two ends of the utility model located at the expanded foundation;

Fig. 4 is a transverse sectional view of the middle part of the utility model.

Detailed ways

As shown in Figure 1, the utility model includes a concrete foundation 1, and two ends of the concrete foundation are provided with enlarged foundations 2.

As shown in Fig. 2, Fig. 3 and Fig. 4, in the concrete foundation 1, two rows of vertical anchor bars 3 are pre-embedded along the longitudinal direction of the pedestal, and a pre-embedded angle steel 4 is welded respectively along the outer sides of the two rows of anchor bars 3 , the top surface of the embedded angle steel 4 is flush with the top surface of the concrete foundation 1; along the transverse direction of the pedestal, an I-beam 5 is arranged at a certain interval, and the bottom surface of the I-beam 5 and the top surface of the embedded angle steel 4 Surface welding; along the longitudinal direction of the pedestal, two channel steel distribution beams 6 are arranged on the top surface of the I-beam, and the channel steel distribution beam and the I-beam 5 are welded; the top of the channel steel distribution beam 6 is welded with a top plate 7 , the width of the top plate 7 is equal to the horseshoe width of the prefabricated T-beam.

When the utility model is actually implemented, the pedestal concrete foundation 1 adopts a C30 reinforced concrete structure, and the top of the foundation is provided with a reverse arch. Before pouring, the line shape and height of the pre-embedded angle steel 4 and the top surface of the concrete foundation must be accurately controlled, and the pre-embedded angle steel 4 must be fixed firmly. , The top of the concrete foundation is even with the top surface of the site to prevent water accumulation and seepage at the joints.

The I-beam 5 is 25b I-beam. Since the two ends of the pedestal are subjected to a large force during the prefabrication of the T-beam, when installing the I-beam 5, set up one every 0.3m at the expanded foundation at both ends of the pedestal, and weld the diagonal bracing 8 between the adjacent I-beam 5 ; An I-beam 5 is set every 0.8m in the middle of the pedestal.

Channel steel distribution beam adopts 10# channel steel. In order to facilitate the hoisting of prefabricated T-beams, when channel steel distribution beams are set, the outer sides of the two channel steel distribution beams are indented by 3cm from the two ends of the I-beam. When welding the channel steel distribution beam, the top surface of the channel steel distribution beam is inclined inward according to the preset inverse camber of the concrete foundation. Appropriate inclination angle can be achieved by laying steel bars on the outside of the channel steel distribution beam.

Along the longitudinal direction of the pedestal, on the outside of the two channel steel distribution beams 6, a row of auxiliary angle steels 9 are welded respectively. The side is welded with the channel steel distribution beam 6 outsides, and the space between the other side and the top plate is filled with a rigid foam board 10 with a thickness of 2.5cm and a width of 5.1cm.

In order to ensure the structural stability of the channel steel distribution beam, along the transverse direction of the pedestal, between the two channel steel distribution beams, multiple reinforcement beams 11 are welded. The reinforcement beams 11 are made of 10# channel steel, and each Set one at intervals of 0.5m, and one at intervals of 1m in the middle of the pedestal.

The top plate 7 adopts a steel plate with a thickness of 6 mm. When welding the top plate, the bottom must be polished and smooth before welding. When welding with the channel steel distribution beam, short welds should be used at intervals of 20 cm to prevent thermal deformation of the steel plate. The top plate 7 can be used as the formwork bottom plate of the prefabricated T beam when the T beam is prefabricated.

Claims (5)

1. A shaped steel pedestal for T-beam prefabricated construction, comprising a concrete foundation, the two ends of the concrete foundation are provided with enlarged foundations, and it is characterized in that: in the described concrete foundation, two columns of vertical anchors are pre-buried along the longitudinal direction of the pedestal Along the outer sides of the two rows of anchor bars, a pre-embedded angle steel is respectively welded, and the top surface of the pre-embedded angle steel is flush with the top surface of the concrete foundation; The bottom surface of the I-beam is welded to the top surface of the pre-embedded angle steel; along the longitudinal direction of the pedestal, two channel steel distribution beams are arranged on the top surface of the I-beam, and the channel steel distribution beam is welded between the I-beam; The top of the distribution beam is welded with a top plate whose width is equal to the horseshoe width of the prefabricated T beam. 2. The profiled steel pedestal for T-beam prefabricated construction according to claim 1, characterized in that: said I-beams are arranged at intervals of 0.3m at the expanded foundations at both ends of the pedestal, and between adjacent I-beams Welded steel diagonal bracing; set one every 0.8m in the middle of the pedestal. 3. The profiled steel pedestal for T-beam prefabricated construction according to claim 1, characterized in that: the outer sides of the two channel steel distribution beams are indented by 3 cm from the two ends of the I-beam. 4. The profiled steel pedestal for T beam prefabricated construction according to claim 3, characterized in that: along the longitudinal direction of the pedestal, on the outside of the two channel steel distribution beams, a row of auxiliary angle steels are respectively welded, and the distance between the top angles of the auxiliary angle steels The top surface of the channel steel distribution beam is 2.5cm, one side of the auxiliary angle steel is welded to the outside of the channel steel distribution beam, and the gap between the other side and the top plate is filled with a rigid foam board with a thickness of 2.5cm and a width of 5.1cm. 5. The profiled steel pedestal for T-beam prefabricated construction according to claim 1, characterized in that: along the transverse direction of the pedestal, between two channel steel distribution beams, welded by multiple strengthening beams, the reinforcing beams are welded between the two sides of the pedestal. Set one at intervals of 0.5m at the base of end expansion, and one at intervals of 1m in the middle of the pedestal.