Displacement box and modular pattern telescopic device

Abstract

The invention discloses a displacement box and a modular pattern telescopic device, and relates to the field of bridge members. The displacement box comprises a box body, an upper support, a lower support and a cross beam, wherein the upper support is connected to the lower portion of a box top plate, the lower support is connected to the upper portion of the box bottom plate, the cross beam is slidably connected with the upper support and the lower support, and an included angle is formed between the lower surface of the box bottom plate and the horizontal plane; the modular pattern telescopic device comprises the cross beam, a middle beam, two displacement boxes and two side beams, wherein the two side beams are located on the two sides of the middle beam and are fixedly connected with the upper surface of one or more displacement boxes, the middle beam is installed on the upper surface of the cross beam, the two displacement boxes are provided with openings in the two opposite surfaces, the cross beam transversely penetrate through the openings and are integrally connected; and the included angle between the box body bottom plate and the horizontal plane of the displacement boxand the modular pattern telescopic device increases the fluidity of a grouting material, and the phenomenon that bottom plates disengaging of the displacement boxes is avoided.

Description

technical field [0001] The invention relates to a bridge component, in particular to a displacement box and a modulus expansion device. Background technique [0002] The bridge expansion device is a general term for various devices installed at the expansion joints of the bridge deck to allow vehicles to pass through the bridge deck smoothly and meet the needs of bridge deck deformation. Among them, the expansion device composed of rubber material with good shock absorption and cushioning performance and easy to seal, combined with high-strength and high-performance anisotropic steel, which can meet various deformations of vehicle loads under large displacement conditions, is called a modular expansion device. . [0003] The modular bridge expansion device is composed of side beams, center beams, beams and displacement boxes. The beams are placed inside the displacement box. The displacement box is a rectangular box structure. When the outside of the displacement box flows...

AI Technical Summary

Problems solved by technology

[0003] The modular bridge expansion device is composed of side beams, center beams, beams and displacement boxes. The beams are placed inside the displacement box. The displacement box is a rectangular box structure. When the outside of the displacement box flows into the outside of the bottom of the displacement box, the fluidity is poor, coupled with the interference of the embedded parts, the construction is difficult, the pouring is not dense, there are cavities and honeycombs inside the concrete, which cannot reach the strength required by the design, and it is easy to appear empty. like figure 2 shown

During use, due to the strong impact of the vehicle load, deformation, cracks, cracks, and pits gradually appear, resulting in damage to the telescopic device

A large number of cases show that in the actual use of the modular expansion device, there are a large number of damages to the expansion device due to voiding

Images