Construction method of ultra-wide terrazzo ground seismic isolation joint
By using technical means such as angle steel, rubber water stops, support rods and fire barriers in the terrazzo floor, cracking and hollowing problems caused by ultra-wide deformation joints are solved, and the flatness and comfort of the ground are improved to ensure that The structural stability and safety of the building.
Patent Information
- Application Number
- CN202411691045.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-01-07
AI Technical Summary
When traditional terrazzo floors face ultra-wide deformation joints, they are prone to cracking or hollowing, which affects the flatness and comfort of the ground, and are expensive to repair and are difficult to meet the original quality standards.
The structural dimensions are measured using a level meter, and the L30×3 angle steel and a lengthy rubber water stop are installed, the ink line ejection support rod and semicircular pull ring are installed, the steel plate and graphite are laid to form a spring support device, and the resistance is set in the middle of the seismic isolation joint. Fire band and buffer layer ensures ground integrity and durability.
It effectively avoids cracking and hollowing of the terrazzo floor at the deformation joints, improves the flatness and comfort of the ground, reduces the repair cost, and ensures the structural stability and safety of the building.
Smart Images
Figure CN119266496A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of building construction, and more specifically to a method for constructing an ultra-wide seismic isolation joint on a terrazzo floor. Background Art
[0002] In recent years, with the continuous advancement of construction technology and the increasing aesthetic demand, building structures have become more complex and diverse. As a direct result of this trend, more and more high-rise buildings and podiums have emerged in cities. However, this diversity in architectural forms has also posed new challenges to structural safety, especially the stricter requirements for seismic performance. In traditional building structure design, the treatment of seismic deformation joints is usually based on experience to reserve a certain amount of deformation space, and this reserved deformation is usually limited to 250 mm. However, with the continuous increase in building height and the increasing complexity of podium structures, traditional deformation joint design has been unable to meet the needs of modern buildings for structural stability and safety. Therefore, many projects have begun to adopt higher fortification standards, that is, the reserved deformation is greater than 500 mm, to cope with the possible greater structural deformation.
[0003] In this context, public buildings such as schools and shopping malls are facing more severe challenges due to their high frequency of use, dense flow of people and extremely high requirements for the durability of floor materials. In particular, terrazzo floors have been widely used in these places due to their wear resistance, non-slip, easy cleaning and beautiful appearance. However, when faced with ultra-wide expansion joints, how to ensure the integrity and durability of the floor at the expansion joints during terrazzo floor construction has become a thorny issue. Due to the rigidity of the terrazzo material itself and the process limitations during the construction process, if it is not handled properly, it is very easy to crack or hollow at the expansion joint. This will not only seriously affect the flatness and comfort of the floor, but may also cause safety hazards and affect the normal operation of the building. At the same time, once the floor is cracked or hollow, the repair work is not only time-consuming and labor-intensive, but also costly, and the effect after repair is often difficult to meet the original quality standards. Summary of the invention
[0004] In order to overcome the problems existing in the above-mentioned prior art, the present invention provides a method for constructing ultra-wide seismic isolation joints in terrazzo floors.
[0005] The technical solution adopted by the present invention is: A method for constructing an ultra-wide terrazzo floor seismic isolation joint comprises the following steps: S1. Use a level and ruler to re-measure the on-site structure and verify the deviation between the on-site dimensions and the drawings; S2. Install an L30×3 angle steel at the same width of the isolation joint on both sides of the isolation joint using expansion bolts, and place a full-length rubber water stop strip at the joint with the large-area terrazzo floor, and then fill the large-area terrazzo floor; S3. Use ink lines to indicate the positions of supporting rods and steel plates at the structural parts, use electric hammers to drill holes, and use anchor bolts to install and fix a semicircular pull ring at intervals of 500mm at the middle and lower parts of the beams on both sides of the seismic isolation joints to fix the supporting rods; S4. Lay a steel plate 300-450 mm wide and 2 mm thick along the length of the steel plate on a semicircular support tray, and lay a layer of graphite on it; S5. After the lower process is completed, lay a steel plate with a width of 800 to 1100 and a thickness of 6 mm on it, place the steel plate in the middle of the seismic isolation joint, and check whether the spring support device is in the middle of the seismic isolation joint; S6. After all the steel plates are in place, place elastic rubber belts on the ground; S7. Set a fire barrier below the seismic isolation joint; S8. Lay a 20mm thick cement mortar leveling layer on the steel plate as a buffer layer; S9. When the strength of cement mortar reaches the standard requirements, fill the terrazzo floor with fillers in time, and start grinding when the strength of the fillers reaches the requirements; S10. After the ground construction is completed, if there is a gap between the ground and the elastic rubber belt, use rubber asphalt glue to fill the gap.
[0006] In step S1, the parts where the heights of the structural plates on both sides of the seismic isolation joint are inconsistent are roughened and washed, and are leveled with concrete.
[0007] In the step S2, the height of the filler should be 3 mm higher than the upper part of the angle steel, and then a large area is polished. When polishing the terrazzo floor, the angle steel part is polished flat.
[0008] In the step S3, a semicircular support tray with a diameter of 100 mm is welded to the end of the fixed support rod to support the upper steel plate, and then a spring is arranged on the support rod.
[0009] In step S4, four 12-diameter steel bars are embedded in the main body construction stage on the right side of the seismic isolation joint, and a 200-width 2-thick steel plate is welded to the embedded steel bars. The flatness of the steel plate is measured with a level to ensure its flatness, and a layer of graphite is laid on the steel plate.
[0010] After the steel plate construction is completed, use asphalt mastic to fill the gap between the steel plate and the ground, and use fine stone concrete to fill and level the other parts.
[0011] In step S5, one side of the steel plate is connected to the main structure floor panel by rivets to form a rigid connection, and a 200 mm wide steel plate is directly placed on the other side to form a hinged sliding system.
[0012] In step S7, a layer of waterproof coiled material is disposed on the upper portion of the fire barrier strip.
[0013] In step S9, the elastic rubber belts on both sides are protected during grinding, and two 50 mm thick square woods are placed on both sides for protection when grinding a large area of the terrazzo floor. After the large area of the terrazzo floor is ground, the square woods on both sides are removed, and then a small handheld grinder is used to grind its edges and corners.
[0014] Compared with the prior art, the present invention has the following beneficial effects: For the parts with inconsistent heights of the structural plates on both sides of the seismic isolation joint, they should be roughened and washed, and then leveled with concrete to ensure the flatness and solidity of the structures on both sides; a full-length rubber waterstop should be placed at the joints between the angle steel and the large-area terrazzo floor to prevent the elastic deformation of the two materials in the later stage from causing cracks and causing water leakage on the ground; when polishing the terrazzo floor, the angle steel parts should be polished flat to avoid cracks in the later stage; the main function of setting the support rods is to reduce the elasticity of the steel plate above the seismic isolation joint and provide conditions for the normal polishing of the terrazzo floor; the function of setting the springs is to prevent the occurrence of cracks during earthquakes. Springs can be used to dissipate energy without damaging the steel plates and other parts of the seismic isolation joints; the steel plates form a sliding system up and down, so that energy can be dissipated in time when an earthquake occurs; the setting of a fire barrier made of glass wool felt material can prevent fire and other dangerous situations from expanding the combustion range through the seismic isolation joints. At the same time, considering that water and other substances may accidentally flow down the ground, water is prevented from polluting the next layer; a 20-thick cement mortar leveling layer is laid as a buffer layer to facilitate the elastic deformation of the terrazzo floor and the conversion of the elastic modulus of the steel plate, and can better protect the terrazzo floor from the influence of the elastic modulus of the steel plate. The construction method of the present invention has scientific and detailed steps, which effectively solves the difficulties in the construction of seismic isolation joints in ultra-wide terrazzo floors and the unstable structure, and improves the overall construction quality of the structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the construction of the present invention; Figure 2 This is a schematic diagram of a 2 mm thick steel plate support frame of the present invention.
[0016] In the figure: 1 is terrazzo floor, 2 is elastic rubber belt, 3 is cement mortar, 4 is steel plate, 5 is supporting rod, 6 is spring, 7 is semicircular supporting tray, 8 is waterproof membrane, and 9 is fire barrier belt. DETAILED DESCRIPTION
[0017] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from the description. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.
[0019] like Figure 1 , Figure 2 As shown, a method for constructing a seismic isolation joint on an ultra-wide terrazzo floor comprises the following steps: S1. Use a level and ruler to re-measure the on-site structure and verify the deviation between the on-site dimensions and the drawings; S2. Install an L30×3 angle steel at the same width of the isolation joint on both sides of the isolation joint using expansion bolts, and place a full-length rubber water stop strip at the joint with the large-area terrazzo floor 1, and then fill the large-area terrazzo floor 1 to prevent the elastic deformation of the two materials in the later stage from causing cracks and causing ground leakage. S3. Use ink lines to indicate the positions of the support rods 6 and steel plates 4 in the structural parts, use electric hammers to drill holes, and use anchor bolts to install and fix a semicircular pull ring at intervals of 500mm in the middle and lower parts of the beams on both sides of the seismic isolation joint to fix the support rods 6; fix them symmetrically on both sides, with the support point located in the middle of the joint.
[0020] S4, laying a steel plate 4 with a width of 300 to 450 mm and a thickness of 2 mm on a semicircular support tray 7 along the length direction of the steel plate 4, and laying a layer of graphite 5 thereon; S5. After the lower process is completed, lay a steel plate 4 with a width of 800-1100 and a thickness of 6mm on it, place the steel plate 4 in the middle of the seismic isolation joint, and check whether the spring support device is in the middle of the seismic isolation joint; and use a heavy object to check whether the support rod 5 in the spring 6 device can play the role of supporting the steel plate 4. In order to make the structural system an integral sliding system. S6. After all the steel plates 4 are placed in place, put the elastic rubber belt 2 on the ground; S7. A fire barrier 9 is set up below the seismic isolation joint. Glass wool felt is used to prevent fire and other dangerous situations from spreading through the seismic isolation joint. At the same time, considering that water and other substances may accidentally flow down the ground, in order to avoid water contamination of the next floor S8. Lay a 20mm thick cement mortar 3 leveling layer on the steel plate 4 as a buffer layer; this facilitates the elastic deformation of the terrazzo floor and the conversion of the elastic modulus of the steel plate, and can better protect the terrazzo floor from the influence of the elastic modulus of the steel plate.
[0021] S9, when the strength of cement mortar 3 reaches the standard requirements, fill the terrazzo floor 1 with fillers in time, and start grinding when the strength of the fillers reaches the requirements; S10, after the ground construction is completed, if there is a gap between the ground and the elastic rubber belt 2, use rubber asphalt glue to fill the gap to ensure the beauty and practicality of the ground.
[0022] In step S1, the parts where the heights of the structural plates on both sides of the seismic isolation joint are inconsistent are chiseled and washed, and concrete is used for leveling to ensure that the structures on both sides are flat and solid.
[0023] In step S2, the height of the filler should be 3mm higher than the upper part of the angle steel, and then a large area of grinding should be performed. When grinding the terrazzo floor 1, the angle steel part should be ground flat to prevent cracks from appearing later.
[0024] In step S3, a semicircular support tray 7 with a diameter of 100 mm is welded at the end of the fixed support rod 6 to support the upper steel plate 4, and then a spring 6 is arranged on the support rod 6. The main function of the support rod 6 is to reduce the elasticity of the upper steel plate 4 of the seismic isolation joint, so as to provide conditions for the normal grinding of the terrazzo floor 1. The function of the spring 6 is to use the spring 6 to dissipate energy during an earthquake so as not to damage the steel plate 4 at the seismic isolation joint. In step S4, four steel bars with a diameter of 12 are embedded in advance during the main body construction phase on the right side of the seismic isolation joint, a 200 mm wide and 2 mm thick steel plate 4 is welded to the embedded steel bars, and the flatness of the steel plate 4 is measured with a level to ensure its flatness, and a layer of graphite 5 is laid on the steel plate 4.
[0025] After the construction of steel plate 4 is completed, asphalt mortar is used to fill the gap between steel plate 4 and the ground, and fine stone concrete is used to fill and level the other parts. After the construction of steel plate 4 is completed, asphalt mortar is used to fill the gap between steel plate 4 and the ground, and fine stone concrete is used to fill and level the other parts. In this way, the steel plate 4 forms a sliding system up and down, and energy can be consumed in time when an earthquake comes. The 300-width steel plate 4 is laid on the semicircular support tray 7 mainly to reduce the elastic deformation of the full-length steel plate at the seismic isolation joint to provide it with a support function and reduce its maximum bending moment. In step S5, one side of the steel plate 4 is connected to the main structure floor panel by rivets to form a rigid connection, and the other side is directly placed on the 200 mm wide steel plate 4 to form a hinged sliding system.
[0026] In step S7 , a layer of waterproof coiled material 8 is disposed on the upper portion of the fire barrier strip 9 .
[0027] In step S9, the elastic rubber belts 2 on both sides are protected during grinding, and two 50 mm thick square woods are placed on both sides for protection when grinding a large area of the terrazzo floor 1. After the large area of the terrazzo floor 1 is ground, the square woods on both sides are removed, and then a small handheld grinder is used to grind its edges and corners.
[0028] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention, and various changes should be included in the protection scope of the present invention.
Claims
1. A method for constructing ultra-wide terrazzo floor seismic isolation joints, characterized in that: The following steps are involved: S1. Use a level and ruler to re-measure the on-site structure and verify the deviation between the on-site dimensions and the drawings; S2. Install an L30×3 angle steel at the same width of the isolation joint on both sides of the isolation joint using expansion bolts, and place a full-length rubber water stop strip at the joint with the large-area terrazzo floor, and then fill the large-area terrazzo floor; S3. Use ink lines to indicate the positions of supporting rods and steel plates at the structural parts, use electric hammers to drill holes, and use anchor bolts to install and fix a semicircular pull ring at intervals of 500mm at the middle and lower parts of the beams on both sides of the seismic isolation joints to fix the supporting rods; S4. Lay a steel plate 300-450 mm wide and 2 mm thick along the length of the steel plate on a semicircular support tray, and lay a layer of graphite on it; S5. After the lower process is completed, lay a steel plate with a width of 800 to 1100 and a thickness of 6 mm on it, place the steel plate in the middle of the seismic isolation joint, and check whether the spring support device is in the middle of the seismic isolation joint; S6. After all the steel plates are in place, place elastic rubber belts on the ground; S7. Set a fire barrier below the seismic isolation joint; S8. Lay a 20mm thick cement mortar leveling layer on the steel plate as a buffer layer; S9. When the strength of cement mortar reaches the standard requirements, fill the terrazzo floor with fillers in time, and start grinding when the strength of the fillers reaches the requirements; S10. After the ground construction is completed, if there is a gap between the ground and the elastic rubber belt, use rubber asphalt glue to fill the gap.
2. The method for constructing ultra-wide seismic isolation joints in terrazzo floors according to claim 1, characterized in that: In step S1, the parts where the heights of the structural plates on both sides of the seismic isolation joint are inconsistent are roughened and washed, and are leveled with concrete.
3. The method for constructing ultra-wide seismic isolation joints in terrazzo floors according to claim 1, characterized in that: In the step S2, the height of the filler should be 3 mm higher than the upper part of the angle steel, and then a large area is polished. When polishing the terrazzo floor, the angle steel part is polished flat.
4. The method for constructing ultra-wide seismic isolation joints in terrazzo floors according to claim 1, characterized in that: In the step S3, a semicircular support tray with a diameter of 100 mm is welded to the end of the fixed support rod to support the upper steel plate, and then a spring is arranged on the support rod.
5. The method for constructing ultra-wide seismic isolation joints in terrazzo floors according to claim 1, characterized in that: In step S4, four 12-diameter steel bars are embedded in the main body construction stage on the right side of the seismic isolation joint, and a 200-width 2mm thick steel plate is welded to the embedded steel bars. The flatness of the steel plate is measured with a level to ensure its flatness, and a layer of graphite is laid on the steel plate.
6. The method for constructing ultra-wide seismic isolation joints in terrazzo floors according to claim 5, characterized in that: After the steel plate construction is completed, use asphalt mastic to fill the gap between the steel plate and the ground, and use fine stone concrete to fill and level the other parts.
7. The method for constructing ultra-wide seismic isolation joints in terrazzo floors according to claim 1, characterized in that: In step S5, one side of the steel plate is connected to the main structure floor panel by rivets to form a rigid connection, and a 200 mm wide steel plate is directly placed on the other side to form a hinged sliding system.
8. The method for constructing ultra-wide seismic isolation joints in terrazzo floors according to claim 1, characterized in that: In step S7, a layer of waterproof coiled material is disposed on the upper portion of the fire barrier strip.
9. The method for constructing ultra-wide seismic isolation joints in terrazzo floors according to claim 1, characterized in that: In step S9, the elastic rubber belts on both sides are protected during grinding, and two 50 mm thick square woods are placed on both sides for protection when grinding a large area of the terrazzo floor. After the large area of the terrazzo floor is ground, the square woods on both sides are removed, and then a small handheld grinder is used to grind its edges and corners.