Earthquake-resistant concrete precast stair

Abstract

The invention relates to the field of concrete precast stairs, in particular to an earthquake-resistant concrete precast stair. The earthquake-resistant concrete precast stair comprises a stair body;the two ends of the stair body are provided with earthquake-resistant structures correspondingly; the stair body is connected with a stair platform through the earthquake-resistant structures; the earthquake-resistant structures comprise upper connecting bodies, lower connecting bodies and connecting blocks; the upper connecting bodies and the lower connecting bodies are connected through bolts, the tops of the bolts are fixedly connected with the upper connecting bodies, and the bottoms of the bolts penetrate through the lower connecting bodies; first springs sleeve the parts, penetrating into the lower parts of the lower connecting bodies, of the bolts, and the first springs abut against the lower connecting bodies upwards; and first slopes are arranged on the lower surfaces of the upperconnecting bodies. Under situations of an earthquake or other vibration, the stair body and the stair platform are not prone to being collided and damaged when moving oppositely in the horizontal direction or in the vertical direction, the earthquake-resistant structures are arranged in the stair body, the structural stability of the stair body is improved, and the long stair body in the earthquake can be prevented from being broken under shearing force during moving.

Description

technical field [0001] The invention relates to the field of concrete prefabricated stairs, in particular to an anti-seismic concrete prefabricated staircase. Background technique [0002] In the current traditional building construction process, most of the construction of the stairs is cast-in-place structure. The traditional cast-in-place staircase structure is difficult to form on site, the quality of the construction joints is not easy to control, and the amount of labor and wood consumption is large. With the construction industry The continuous innovation and development of the market and the rising price of labor force in the market will lead to an increase in construction costs. The construction industry will gradually develop in the direction of industrialization and factoryization. The industry will use more and more prefabricated models. Prefabricated stairs, as an indispensable part of the prefabricated structure, will inevitably be popularized and applied on a ...

AI Technical Summary

Problems solved by technology

However, when the earthquake makes the prefabricated concrete stairs and the cast-in-place stair platform move relatively in the horizontal direction, the two will still collide, resulting in damage to the prefabricated concrete stairs or the cast-in-place stair platform

Images