Reinforced concrete stringer stairway with slidable end structures and method for constructing reinforced concrete stringer stairway

Abstract

The invention discloses a reinforced concrete stringer stairway with slidable end structures and a method for constructing the reinforced concrete stringer stairway, and belongs to the field of civil engineering. The reinforced concrete stringer stairway and the method are mainly used for building engineering. The reinforced concrete stringer stairway comprises a stairway oblique beam, a stairway tread and a stairway bottom beam which are cast in a site to form a bench. The upper end of the bench and an upper-end supporting beam are subjected to one-piece casting, and a slidable support is arranged at the lower end of the bench. The method includes shelving the lower end of the bench on a lower-end supporting beam in a supported manner, separately reinforcing the bench and the lower-end supporting beam and respectively casting and manufacturing the bench and the lower-end supporting beam; manufacturing a concrete surface, which is used for supporting the bench, of the lower-end supporting beam into a smooth and flat horizontal plane, and vertically separating the lower-end supporting beam from the bench by an isolation layer; and arranging gaps or isolation strips among the lower end of the bench, the lower-end supporting beam and other adjacent components except for supports which are in contact with each other. Isolation materials are fully laid to form the isolation layer, and the lower-end supporting beam and the bench can horizontally slide relatively after being separated from each other. The reinforced concrete stringer stairway and the method have the advantages that the stringer stairway is provided with the slidable end structures, so that destruction to the stringer stairway can be postponed when in an earthquake, adverse effects on a main structure are reduced, and the reinforced concrete stringer stairway is simple in structure and convenient to construct.

Description

technical field [0001] The invention relates to a reinforced concrete beam type staircase with a slidable end structure and a construction method, which belongs to the field of civil engineering and is mainly used in construction engineering. Background technique [0002] Reinforced concrete beam staircase is one of the most widely used staircase construction forms in buildings. It is suitable for stairwells with large spans and dense traffic, such as schools, shopping malls and other buildings. However, the cast-in-place reinforced concrete beam staircase constructed in the traditional way has the stair inclined beams and stair treads as stair sections, which are poured together with the upper and lower supporting members. Large, resulting in uneven distribution of stiffness in the floor plan, which has a great impact on the overall analysis results of the structure; and this practice often leads to the staircase becoming the first line of anti-seismic defense of the struc...

AI Technical Summary

Problems solved by technology

However, the cast-in-place reinforced concrete beam staircase constructed in the traditional way has the stair inclined beams and stair treads as stair sections, which are poured together with the upper and lower supporting members. Large, resulting in uneven distribution of stiffness in the floor plan, which has a great impact on the overall analysis results of the structure; and this practice often leads to the staircase becoming the first line of anti-seismic defense of the structure, which will be destroyed first under strong earthquakes, and it is difficult to ensure that the stairs will not be damaged during an earthquake. As an emergency escape channel, it can play the role of personnel evacuation and rescue

Images