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The detailed of stairs reinforcement method
The construction of the staircase is mainly aimed at the carrying capacity of the stairs.we will choose the enlargement of the cross section, the strengthening of the CFRP and the reinforcement of the steel plate
In high buildings, elevators are ubiquitous devices, which add a lot of convenience to our life, and we will find stairs where there are elevators. Although the elevator is popular everywhere, stairs at the critical moment is indeed the life . For example, earthquake and fire. Today, Horse Construction will discuss stairs reinforcement.
When it comes to staircase reinforcement, what kind of place is used more? Schools, hospitals, shopping malls, cinemas, hotels, KTV. If unexpected events occur, the elevator is not good guarantee for people, so only the stairs is safe.
Why these public places must to do staircase reinforcement?Because there are more people in these places, some stairs have been running for many years. So in order to the safety of the passageway, we must do staircase reinforcement construction in a certain time.
For the staircase strengthening construction, the main aim is to improve the carrying capacity of the staircase, the reliability, and its bearing capacity. So what kind of reinforcement method should we choose? Generally, increase the section reinforcement method, CFRP reinforcement method and bonded steel plate reinforcement method.
Increase the section reinforcement method
The method of increasing section reinforcement is to increase the thickness of reinforced concrete layer at the top or bottom of the floor, which is not less than 40mm thick. Generally, the reinforcement is usually done by slab pouring to form rigid floor and roof. If the laminated layer must be poured on the bottom, it is necessary to use the injection method for the drilling of the bottom. The reinforced bar should be hot rolled steel reinforcing bar, and the diameter of the reinforced bar is not less than 8mm.
CFRP reinforcement method
As for reinforced concrete members in bending, axial compression and eccentric compression and tension members with CFRP. The carbon fiber is light weight and high strength, the original floor weight is hardly increased after reinforcement, and does not affect the shape of the floor, not only can improve the bearing capacity of floor slab, also can enhance its rigidity etc..
Bonded steel reinforcement method
Bonded steel reinforcement is applied more widely in reinforced concrete with large eccentric compression, flexural and tensile members, increases bearing capacity.
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High strength, unidirectional carbon fiber wrap pre-saturated to form a carbon fiber reinforced polymer (CFRP) wrap used to strengthen structural concrete elements.
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