Steel structure engineering, as the name implies, is the structural engineering with steel as the main body. It is composed of steel beams, steel columns, steel trusses, etc. because of the different materials, their connection methods are different, including welds, bolts, rivets, etc.Steel structure engineering includes steel structure canopy, steel structure overpass, spiral stairs, etc. all belong to steel structure. A set of qualified steel structure engineering not only needs construction safety, but also design safety. According to the drawing and ISO9001 standard, construction must be carried out according to specifications, etc. How to make a set of steel structure project safe selection from the beginning to the end is very important, how to distinguish Whether the steel structure construction team is safe or not, first of all, we must have a standardized construction team, then we must have construction requirements, and finally we must have our own company’s standards for the project.An excellent construction team is the core of a steel structure company, which is also the most basic requirement of a steel structure company. We think that this is not only the core of the company, but also the minimum sense of responsibility for customers. We are more responsible for customers. How does the steel structure company deal with the problem of steel structure engineering deformation? 

How does steel structure company deal with the deformation of steel structure engineering?

1、 Introduction to deformation joint of steel structure engineering

 Deformation joint is the general name of expansion joint, settlement joint and shockproof joint.According to the building under the action of external factors, often produce deformation, leading to cracking and even damage.The deformation joint is a structural joint reserved for this situation.

 Expansion joint: due to the change of temperature and humidity, building components will produce expansion and contraction deformation.Therefore, the vertical gap is usually set in the appropriate part of the building, and the wall, floor, roof and other components of the building are disconnected from the foundation, and the building is separated into several independent parts.In order to overcome the excessive temperature difference and set the joint, the foundation can be continuously disconnected, from the top of the foundation to the roof extension structure.

 Aseismic joint: a joint set to make the building more regular and beneficial to the seismic resistance of the structure. The foundation can be opened continuously.The purpose of its setting is to divide large buildings into smaller parts to form relatively independent anti-seismic units, so as to avoid the damage caused by the earthquake caused by the whole building vibration uncoordinated.

 Settlement joint: it refers to the construction joint set in order to avoid the wall or other structural parts cracking caused by uneven settlement when the same building is widely different in height, the upper load distribution is uneven, or it is built on different foundation soil.The settlement joint divides the building into several sections and forms a self-contained system. The foundation, wall, floor and roof are not connected.The seam width is generally 30-70 mm.A vertical joint that completely divides a building or structure into sections from the foundation to the top.In order to avoid cracks caused by uneven subsidence of each section.It is usually set between the parts with great difference in building height, load or foundation bearing capacity, as well as at the joint of old and new buildings.

 2、 Construction of roof deformation joint in steel structure engineering

 　　1Steel structure engineering construction process flow:

 Steel structure engineering base surface cleaning and finishing → spraying base treatment agent → filling material in deformation joint → additional layer waterproof layer → buckle cover plate on top of deformation joint → cleaning, inspection and repair

 (1) Cleaning and finishing of base course surface: check whether the quality of base course meets the requirements, and clean it, and repair the defects in time.

 (2) Spraying base treatment agent: spray the treatment agent on the base course of the dried cornice, so as to bond the coiled material and the base course firmly.

 (3) filling material in deformation joint: polystyrene foam should be filled in the deformation joint.

 (4) Additional layer: 1 to 2 additional layers of coiled material shall be laid at the intersection of both sides of deformation.

 (5) Waterproof layer:

 In the type of high deformation joints such as steel structure, the coiled material should be fully glued to the top of the wall, and then the upper part will be covered with coiled material. The coiled material and the waterproofing layer should be glued. The middle should be as far as possible to sag into the seam, and place the polystyrene foam stick on it, then cover it with a layer of coiled material, and both ends will hang down and stick to the waterproof layer.In the deformation joint of high and low span, the waterproof membrane with low span shall be paved to the top of the low span wall, and then a layer of membrane cover shall be covered on it. One end of the membrane shall be firmly bonded with the waterproof membrane paved to the top of the wall, and the other end shall be pressed in the groove of the high-span wall with adhesive tape and sealed with sealing material, and the middle shall be hung in the joint as far as possible. 

How does steel structure company deal with the deformation of steel structure engineering?

(6) Cover plate with opening at the top of deformation joint:

 In the type of equal height deformation joint in steel structure engineering, the top of deformation joint is buckled with concrete cover plate or metal cover plate; in the type of high and low span deformation joint, the metal synthetic polymer cover plate is nailed on the top of high span wall groove, and the end is sealed by sealing material.

 3、 Deformation construction of external wall of steel structure engineering

 　　1According to the plane or corner mode of different structures and expansion joints between columns and walls, walls and walls, columns and columns on the construction site, the steel structure engineering shall be profiled with 0.6-thick stainless steel according to the dimensions required in the atlas, and all kinds of folding forms are as designed.

 　　2Remove the sundries in the expansion joint until it is clean, and remove the walls or columns on both sides of the expansion joint to ensure that the polystyrene board and stainless steel are firmly fixed.

 　　3Cut polystyrene board, paste it in the seam from top to bottom until it is firm to ensure no falling and no offset.

 　　4According to the design size of steel structure engineering, the stainless steel side line shall be ejected with the hanging wire hammer for control.

 　　5According to the size and position of snapping line, the stainless steel and small mesh steel mesh are fixed with the expansion anchor bolt spacing of 500mm, and some vulnerable parts are strengthened with intensive fixation.

 　　6Fix the steel mesh with small mesh on both sides of the wall.

 　　7When painting, the embedded parts on both sides of the stainless steel plate, including small mesh and steel mesh, are covered in the painting layer.

 　　8During the construction of exterior wall painting and coating, the joints of steel plate shall be straight and free from pollution, and the appearance of stainless steel plate shall be smooth and smooth.

 4、 Construction of internal wall deformation joint of steel structure engineering

 　　1In order to fix the aluminum alloy, the impurities in the joint and the fixed position of the joint edge shall be cleaned up for steel structure engineering.

 　　2According to different structural types, prefabricated aluminum alloy center plate, aluminum alloy bottom frame, aluminum alloy cover plate and aluminum anchor clip are prefabricated for steel structure engineering.

 　　3The aluminum alloy frame line shall be ejected according to the design size of steel structure engineering to keep straight line.

 　　4The aluminum alloy bottom frame and the aluminum alloy center plate are fixed along the line with expansion bolts by using pop-up line to keep straight line and flatness.

 　　5The aluminum alloy cover plate is firmly connected with the aluminum alloy bottom frame and center plate with the aluminum anchor clip.

 　　6The joint of the plastering surface course, the cover plate and the frame shall be caulked with ointment to keep the flexible connection.

 　　7Keep the aluminum alloy cover flat and glossy.Ground expansion joint treatment

 5、 Construction of ground deformation joint in steel structure engineering

 　　1Determine the position of the expansion bolt according to the leveling plate at the corresponding position, drill the hole with the impact drill, and place the expansion bolt in the hole position;

 　　2After the elevation, level and straightness of the leveling plate are corrected, the leveling plate is fixed, and the thermal insulation layer is installed;

 　　3To deal with the interface of thermal insulation layer, the waterproof layer at the bottom layer is bonded as a whole with chlorinated polyethylene rubber, and then aluminum silicate and glass wool are filled, and then the upper waterproof layer is connected;

 　　4Check whether the thermal insulation layer of steel structure engineering is straight and whether the interface is well connected;

 　　5Install the slide rail, check and approve the distance between the upper edges of the slide rails on both sides, and determine the elevation and straightness of the upper edge, and then fix it on the leveling plate with self tapping screws. Before tapping, the drill bit smaller than the diameter of the self tapping screw can be used to drill holes first, which can reduce the difficulty of tapping screws;

 　　6Put the pulley block into the slide rail, fix the sliding plate on the pulley block, and level and straighten it;

 　　7When paving the ground stone, protect the exposed gap and forbid falling debris; after laying the ground stone, glue the exposed gap, and the glue color should be close to that of the stone on the ground.

 6、 Quality measures of steel structure engineering

 　　1The construction shall be carried out in strict accordance with the design requirements and specifications, and the construction shall be carried out one by one according to the process requirements.

 　　2The qualified materials shall be selected according to the design requirements

 　　3Focus on controlling the connection between deformation joint and wall, ground and roof to ensure that the connection is firm and free of water leakage.

 　　4Strictly control the flatness and perpendicularity of expansion joint panel of each wall to keep the appearance beautiful.

 HONGJIHONGDA Steel Structure Co., Ltd. is engaged in steel structure engineering, construction engineering, steel member processing and export, steel structure workshop construction design and other types of engineering.Three dimensional steel structure is a company with more than ten years of steel structure engineering experience. It is a set of steel structure design, processing, installation, maintenance, anti-corrosion, and other aspects in one, to provide you with one-stop construction services.Professionals to do professional work has always been the purpose of three-dimensional, will be able to build high-quality building steel structure engineering.