What are the types of deformation joints?

What should be done at this time? Deformation seams work: Strengthen the integrity of the building so that it has enough strength and stiffness to overcome these failure stresses without causing damage; pre-disconnect the structure in these deformation-sensitive sites, leaving a certain gap, To ensure that each part of the building has enough deformation width in these gaps without causing damage to the building. This kind of reserved space that divides the building vertically is called a deformation joint. The next small series of details for everyone to explain the role of deformation joints .

[Structure of deformation joint]
1. Double-wall or double-column on both sides of the deformation joint - The method is simple, but easy to make the structural foundation on both sides of the joint eccentric (for the expansion joints can not be disconnected because of the foundation, so this problem can be eliminated).
2. Both sides of the deformation joint can be picked out with the horizontal member cantilever in the direction of the deformation joint. The base part is easy to disengage the distance. It is more convenient to locate the joint, and is especially suitable for settlement joints.
3, with a simple support of horizontal components for the transition process - used to connect the two buildings of the overhead walkway, etc., but in the earthquake-proof area should be used with caution.
[ Types of deformation joints]
Deformation joints can be classified into three types: expansion joints, settlement joints and seismic joints.
1. Expansion Joints: Expansion and shrinkage of building components will occur due to changes in temperature and humidity. To this end, vertical slits are usually provided at appropriate locations in the building, and the walls, floors, roofs, and other components of the houses are separated from the foundation to separate the building into several independent parts. In order to overcome the large temperature difference provided by the seam, the foundation may not be disconnected, breaking from the basic top surface to the roof along the structure.
2. Anti-seismic joints: The foundations may be inseparable in order to make the buildings more regular in order to facilitate the structural anti-seismic settings. Its purpose is to separate large buildings into smaller parts to form relatively independent anti-seismic units to avoid damage caused by the earthquake as a whole.
In seismic fortification areas, settlement joints and expansion joints must meet the requirements of seismic joints.

3. Settlement joints: Refers to the difference in the height of the same building, the uneven distribution of the upper load, or the construction structural joints set in order to avoid the uneven settlement of the wall or other structural parts when it is built on different foundation soils. Settlement joints divide the building into several paragraphs and form a self-contained system. They do not connect from the foundation, the wall, the floor to the roof. Sewing width is generally 30 ~ 70 mm. Completely divides a building or structure into vertical joints from the foundation to the top. In order to avoid non-uniform sinking and cracks. It is usually set between the height of the building, the loads or the parts where the bearing capacity of the foundation varies greatly, and the joints between the old and new buildings.
Xiao Bian epilogue: The above introduced the role of deformation joints , I hope to be helpful to everyone. For more relevant knowledge, please continue to pay attention to this website information platform. Follow-up will present more exciting content for everyone.

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