CN205134792U

CN205134792U - Light -duty reinforced concrete prefabricated staircase

Info

Publication number: CN205134792U
Application number: CN201520908944.9U
Authority: CN
Inventors: 姜才
Original assignee: Chifeng Liqiang Prefabricated Part Co Ltd
Current assignee: CHIFENG BUILDING SCIENCE RESEARCH INSTITUTE CO., LTD.
Priority date: 2015-11-13
Filing date: 2015-11-13
Publication date: 2016-04-06
Anticipated expiration: 2025-11-13

Abstract

The utility model provides a light -duty reinforced concrete prefabricated staircase, it be by multistage mark time with or rest platform structure, mark time and set up to the hollow, the stair both sides are both sides of the chest, the cross -section of marking time is hollow triangle -shaped, foretell half space also is the hollow, its cross -section is for falling the flute profile, the reinforcing bar that these stair are joined in marriage is that main muscle is joined in marriage to both sides of the chest, mark time every stupefiedly join in marriage a reinforcing bar, a reinforcing bar is also joined in marriage by two departments of meeting of marking time, cloth reinforcing bar net on mark time plane of structure and facade, the half space is that main muscle is joined in marriage to both sides of the chest and outer end, joins in marriage the reinforcing bar net in the half space, establish the hoist and mount pipe on every prefabricated staircase. This prefabricated staircase is lighter by 40% with the specification stair than what have now, convenient hoist and mount, and its structural performance accords with the requirement of " concrete structure construction quality acceptance specification " (GB50204 -2002) (2011 editions), and structural performance is up to the standards. These stair light in weight, the quantity of reinforcing bar also lacks than prior art, and reduce cost is favorable to prefabricated staircase's popularization and application.

Description

Lightweight section reinforced concrete precast stair

Technical field

The utility model relates to a kind of stair, is the light prefabricated stair of multi-storey building specifically.

Background technology

Builing industry " 12 " planning clearly proposes to actively promote industrialization of construction industry, precast stair saving of labor, convenience, can shorten the duration of construction.At present, in the building process of construction of small and medium-sized cities, common precast stair can not be widely used, and main cause is that precast stair deadweight is heavier, and the tower crane tonnage that construction enterprises generally use is little, can not handling, limits the application of precast stair.

The cross section of existing stair step is solid triangle, and half space cross section is rectangle, and the steel mesh reinforcement of the main muscle of bottom strap of marking time of stair, does not have reinforcing bar on marking time.

Summary of the invention

The purpose of this utility model is to provide a kind of lightweight section reinforced concrete precast stair, and it is from heavy and light, and save material, cost is low, in small and medium-sized cities extensive use, can contribute to the efficiency of construction improving building.

The technical solution of the utility model is as follows:

A kind of lightweight section reinforced concrete precast stair, it be by multistage mark time and or half space form, stair both sides are both sides of the chest, and the described cross section of marking time is hollow triangle, the cross section of above-mentioned half space be hollow fall flute profile; Reinforcing bar that these stair are joined is that both sides of the chest join main muscle, and that marks time each stupefiedly joins a reinforcing bar, and a reinforcing bar is also joined in two joints of marking time, and at cloth steel mesh reinforcement on plane of structure and facade of marking time, half space is that main muscle is joined in both sides of the chest and outer end, joins steel mesh reinforcement in half space; Each precast stair is established lifting pipe.

The main muscle of joining bottom above-mentioned stair both sides of the chest is two.

The utility model has the advantage of: 1, this precast stair is lightweight, lighter by 40% than existing same specification stair, the requirement that its structural performance meets " concrete structure construction inspection of quality specification " (GB50204-2002) (2011 editions), structure and property detection is qualified.2, reduce weight, convenient lifting, is conducive to applying of precast stair, and 3, reduce concrete consumption, the consumption of reinforcing bar is also few than prior art, reduces costs.

Accompanying drawing explanation

Fig. 1 is the utility model example structure schematic diagram;

Fig. 2 is the utility model embodiment reinforcement structure schematic diagram;

Fig. 3 is A-A direction view of Fig. 2;

Fig. 4 is the B--B direction view of Fig. 3;

Fig. 5 is stair step reinforcement structure partial enlarged drawing.

Detailed description of the invention

Below in conjunction with accompanying drawing, the utility model is described in further detail.

This lightweight section reinforced concrete precast stair can be seen by Fig. 1, it be by often save stair mark time 1 be set to hollow, stair both sides are both sides of the chest 7, the cross section of marking time is hollow triangle 2, each precast stair is established lifting pipe 3, it is solid for marking time in the position 4 of pre-buried lifting pipe, to increase its intensity.

Can be seen by Fig. 1 ~ 5, this precast stair can connect half space 5, and the connected half space of stair 5 is also hollow, can see that half space cross section is for falling flute profile 6 by Fig. 3; These stair join reinforcing bar structure be that both sides of the chest join oblique pull reinforcing bar 13, two main muscle 12 of oblique pull are joined bottom both sides of the chest, that marks time each stupefiedly joins a reinforcing bar, and outer horizontal stroke is stupefied joins reinforcing bar 10, and side is stupefied joins reinforcing bar 9, a reinforcing bar 8 is also joined in two joints of marking time, at cloth steel mesh reinforcement 17 on plane of structure and facade of marking time, half space is also that both sides of the chest join main muscle 14, and 4 main muscle 16 are joined in its upper end, join steel mesh reinforcement 11 in platform, 15 is reinforce anticracking reinforcing bar.

Claims

1. a lightweight section reinforced concrete precast stair, it is characterized in that: it be by multistage mark time (1) and or half space (5) form, stair both sides are both sides of the chest (7), the described cross section of marking time is hollow triangle (2), and the cross section of above-mentioned half space (5) is hollow flute profile (6); Reinforcing bar that these stair are joined is that both sides of the chest join main muscle (12), that marks time each stupefiedly joins a reinforcing bar, a reinforcing bar (8) is also joined in two joints of marking time, at cloth steel mesh reinforcement (17) on plane of structure and facade of marking time, half space is that main muscle is joined in both sides of the chest and outer end, joins steel mesh reinforcement (11) in half space; Each precast stair is established lifting pipe (3).

2. lightweight section reinforced concrete precast stair according to claim 1, is characterized in that: the main muscle (12) that its stair both sides of the chest (7) bottom is joined is two.