Large cantilever bare concrete stair and construction method thereof

Abstract

The invention relates to a large cantilever bare concrete stair and a construction method thereof. The large cantilever bare concrete stair comprises stairsteps and stair platforms. One sides of the stairstep and the stair platforms are connected with a wall body; the other sides of the stairstep and the stair platforms are of cantilever structures; shear keys are arranged at connecting positionsof the stair platforms and the wall body and are multiple joist steel pre-embedded into the wall body. The construction method comprises the steps of setting the shear keys, bracing bare cantilever stair formworks, embedding pre-embedded parts, casting bare concrete, maintaining finished products and the like. According to the large cantilever bare concrete stair and the construction method thereof provided by the invention, special treatment measures are adopted for solving the problems of cantilever structure anchoring, bare structure formwork bracing and bear concrete casting, so that the safety of cantilever structures and an impressions effect of the bear concrete are ensured.

Description

technical field [0001] The invention relates to the field of building construction, in particular to a large cantilever fair-faced concrete staircase and a construction method thereof. Background technique [0002] Cantilevered structure is an important means of expressing the magnificent appearance of buildings. The cantilevered slab staircase of reinforced concrete has no beams and columns, and its form is novel and light. It has been widely used in public buildings such as office buildings and libraries in recent years. As a form of architectural expression, fair-faced concrete is gradually becoming a new architectural genre. Fair-faced concrete is energy-saving and environmentally friendly, reflecting the most essential appearance of building materials. The combination of cantilever structure, fair-faced concrete structure and stair structure has always been a difficult point in construction. First, there is a large shear force and negative bending moment at the root of ...

AI Technical Summary

Problems solved by technology

The combination of cantilever structure, fair-faced concrete structure and staircase structure has always been a difficult point in construction. First, there is a large shear force and negative bending moment at the root of the cantilever structure. The anchorage force requirement of the cantilever structure is to ensure the safety of the structure. secondly, fair-faced concrete directly utilizes the natural texture after concrete molding as the concrete of the finishing effect, and in order to express the best effect of the clear-faced concrete architectural style, the most important thing is the pouring, maintenance and treatment of the concrete, and the staircase structure exists There are many corners and steps, and the appearance effect of fair-faced concrete is not easy to guarantee. There are few cases of using fair-faced concrete stairs in public buildings, and there is a lack of mature construction methods; raised higher demands

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