Reinforcement of Prefabricated Slab House Structure

There are various methods for reinforcing the structure of prefabricated slab houses, and appropriate solutions can be selected according to the actual situation. Here are some common and effective approaches:

Reinforcement under the slab of panel buildings

Setting profile steel at the four corners to change the four-sided support into eight-sided support can significantly improve the load-bearing capacity of the slab. Alternatively, profile steel can be installed along the longest side under the slab to enhance its stability. This method disperses the load borne by the slab by altering the support structure, making the slab more evenly stressed and reducing the risk of damage caused by excessive local stress.

Plywood reinforcement

Reinforcing the floor slab with plywood in an up-and-down clamping manner can effectively improve the overall integrity and load-bearing capacity of the floor slab. The upper and lower plywood tightly connect all parts of the floor slab, forming a whole that jointly bears the load and enhancing the floor slab's ability to resist deformation and damage.

Reinforcement of the floor and roof

If the prefabricated slabs are pulled apart or damaged, they can be restored to integrity by refilling with cement mortar. When the roof moves, using iron pipes for support or adding brick piers can provide additional support and prevent further movement of the roof. For brick-wood structure houses, using drift pins to strengthen the connection between the wooden roof truss and the purlins, using backing plates to strengthen the connection between the gable wall and the purlins, and adding diagonal braces between wooden columns can enhance the overall integrity and stability of the structure.

Reinforcement of load-bearing walls

Building an additional wall outside the original load-bearing wall to expand the contact surface of the prefabricated slabs and reduce the unit stress intensity. This wall can be built with bricks or cast in place. Alternatively, the prefabricated slabs can be recast to increase their strength. By increasing the thickness of the load-bearing wall or reinforcing the prefabricated slabs, the load-bearing capacity of the structure is improved.

Reinforcement of connection parts

Reinforcing connection bolts, connection plates, etc., to increase the seismic capacity of the connection parts. Connection parts are weak links in the structure. Strengthening these parts can improve the seismic performance of the entire structure and reduce the possibility of damage under external forces such as earthquakes.

Roof reinforcement

Adding reinforced concrete beams or reinforcing the steel mesh on the roof can increase the load-bearing capacity of the roof, enabling it to better bear the self-weight of the roof as well as possible loads such as wind and snow.

Using bricks, concrete, or steel for support

Adding brick or concrete structures under the prefabricated slabs or installing steel support structures at the bottom can enhance the load-bearing capacity of the prefabricated slabs and improve the stability of the structure by utilizing the high strength of bricks, concrete, and steel.

Reinforcement with carbon fiber cloth

When the load increase is relatively small, carbon fiber can be directly pasted on the bottom of the hollow slab. Carbon fiber has characteristics such as high strength and light weight, which can effectively improve the load-bearing capacity of the slab.

Section enlargement reinforcement method

Increasing the load-bearing capacity of the prefabricated slabs by enlarging the cross-section. Increasing the cross-sectional dimensions enables the slab to bear greater bending moments and shear forces when stressed.