A method of seismic isolation using horizontal isolation joints

Abstract

The present invention discloses a method for seismic isolation of horizontal isolation joints, comprising the following steps: 1. construction of an isolation retaining wall of a building structure; 2. construction of an isolation cover plate of a building structure; 3. placement of balls; 4. sealing the edge of the horizontal isolation joint with a flexible sealing strip; 5. isolation of the horizontal isolation joint; 6. replacement of balls and sealing the horizontal isolation joint. The present invention reduces the height of the horizontal isolation joint by improving the top surface of the isolation retaining wall at the position of the horizontal isolation joint and the bottom surface structure at the edge of the isolation cover plate, seals the edge gap of the horizontal isolation joint with a sealing strip, and has a good waterproofing effect. When an earthquake occurs, the isolation support can be tilted in any direction, and the limit block and the limit groove can cooperate to prevent the vibration amplitude of the isolation cover plate from being too large. The balls are used to consume the earthquake energy input to the isolation cover plate, and the isolation cover plate can slide freely in any direction.

Description

Technical Field

[0001] The invention belongs to the technical field of horizontal isolation joint seismic isolation, and particularly relates to a horizontal isolation joint seismic isolation method. Background Art

[0002] Modern buildings generally use seismic isolation technology to assist in earthquake resistance. An isolation layer is set between the upper and lower structures of the building structure to extend the natural vibration period of the building structure and increase the damping. A completely through horizontal isolation joint is set between the upper and lower structures and the outdoor ground. Generally, the height of the isolation joint is 20 to 50 mm. The height of 20 to 50 mm makes it easy for rainwater and water vapor in the air to invade, accelerating the aging of the isolation bearings; the invasion of sand and gravel increases friction, reduces the seismic isolation effect, and may also affect the foundation and subgrade, which is not conducive to the safety of the building structure.

[0003] Existing horizontal isolation joint seismic isolation technology generally uses flexible materials to fill and seal, or uses mortar to seal, so that the upper and lower parts are connected as one, which makes waterproofing difficult. After an earthquake, the flexible material is damaged and difficult to repair, and the above structure cannot achieve free sliding, which brings great harm to the upper structure and even the entire structure of the building. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to address the deficiencies in the above-mentioned prior art and provide a horizontal isolation joint seismic isolation method. By improving the top surface of the vibration isolation retaining wall at the horizontal isolation joint position and the bottom surface structure at the edge position of the vibration isolation cover plate, the height of the horizontal isolation joint is reduced, and the edge gap of the horizontal isolation joint is sealed by a sealing strip, and the waterproof treatment effect is good. When an earthquake occurs, the vibration isolation support can be tilted in any direction, and the limit block and the limit groove can prevent the vibration amplitude of the vibration isolation cover plate from being too large. The ball bearing is used to consume the seismic energy input to the vibration isolation cover plate, and the vibration isolation cover plate can slide freely in any direction, which is convenient for promotion and use.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a horizontal isolation joint seismic isolation method, characterized in that the method comprises the following steps:

[0006] Step 1: Construction of the vibration isolation retaining wall of the building structure: When constructing the vibration isolation retaining wall to the top position, construct a serpentine groove on the top surface of the vibration isolation retaining wall, and construct multiple limit blocks on the top surface of the vibration isolation retaining wall and on both sides of the serpentine groove. In addition, construct multiple positioning grooves for placing prefabricated blocks or jacks on the inner and outer sides of the top of the vibration isolation retaining wall;

[0007] Among them, a plurality of pressure sensors are pre-buried in the bottom of the serpentine groove along the extension direction;

[0008] Step 2: Construction of the vibration isolation cover of the building structure: When the vibration isolation cover is constructed to the edge position, a limiting groove that matches the limiting block and the serpentine groove is constructed on the bottom surface of the edge position of the vibration isolation cover;

[0009] A horizontal isolation gap is formed between the top surface of the vibration isolation retaining wall and the bottom surface of the edge of the vibration isolation cover plate. The width of the horizontal isolation gap is 2 mm to 5 mm, and the height of the limit block is greater than the width of the horizontal isolation gap.

[0010] Step 3: Place the balls: Install jacks at the location of the positioning grooves, use multiple jacks to raise the height of the vibration isolation cover, and place multiple balls in sequence along the extension direction of the serpentine groove. The diameter of the balls is greater than the depth of the serpentine groove, and the height of the limit block is less than the height of the part of the ball extending out of the serpentine groove. After placing multiple balls, use multiple jacks to reset the vibration isolation cover. The vibration isolation cover is supported by the vibration isolation support.

[0011] Remove several jacks and replace prefabricated blocks at the locations of the positioning slots;

[0012] At this time, the ball contacts the bottom of the limiting groove;

[0013] Step 4: The edges of the horizontal isolation joints are sealed with flexible sealing strips to complete the construction of the horizontal isolation joint seismic isolation structure;

[0014] Step 5: Horizontal isolation joints for seismic isolation: When an earthquake occurs, the isolation support deforms, and the limit blocks and limit grooves cooperate to prevent the isolation cover from vibrating too much. Multiple balls are used to consume the seismic energy input to the isolation cover, and the multiple balls enable the isolation cover to slide freely in any direction. At the same time, multiple pressure sensors are used to collect the pressure on the top surface of the isolation retaining wall in real time.

[0015] Step 6: Determine whether to replace the ball bearings: When the pressure value of the top surface of the vibration isolation retaining wall collected in real time by multiple pressure sensors is greater than the pressure threshold, execute step 7; otherwise, there is no need to replace the ball bearings;

[0016] Step 7: Replace the balls and seal the horizontal isolation joints: After the earthquake, remove multiple prefabricated blocks, replace jacks at the locations of the positioning grooves, use multiple jacks to raise the height of the vibration isolation cover, replace multiple old balls in the serpentine grooves with new ones, and use multiple jacks to reset the vibration isolation cover. The vibration isolation cover is supported by the vibration isolation supports.

[0017] Then remove several jacks and replace the prefabricated blocks at the locations of the positioning slots;

[0018] The edges of the horizontal insulation seams are sealed again by flexible sealing strips.

[0019] The above-mentioned horizontal isolation joint seismic isolation method is characterized in that the inner wall of the serpentine groove is an arc-shaped structure adapted to the ball.

[0020] The above-mentioned horizontal isolation joint seismic isolation method is characterized in that: the flexible sealing strip is a rubber water-proof sealing strip;

[0021] In step five, when an earthquake occurs, the vibration isolation support deforms and drives the vibration isolation cover to slide freely in any direction, and the flexible sealing strip is squeezed out from the edge of the horizontal isolation seam and falls off by itself.

[0022] The above-mentioned horizontal isolation joint seismic isolation method is characterized in that the top surface of the prefabricated block is flush with the top surface of the vibration isolation retaining wall.

[0023] The above-mentioned horizontal isolation joint seismic isolation method is characterized in that: the balls are concrete balls, the strength of the concrete balls is less than the concrete strength of the isolation retaining wall and the isolation cover, and a concave angle structure is provided at the matching position of the limiting groove and the limiting block.

[0024] The above-mentioned horizontal isolation joint seismic isolation method is characterized in that: in step six, the pressure value of the pressure on the top surface of the vibration isolation retaining wall collected in real time by multiple pressure sensors is the average of the values ​​collected by the multiple pressure sensors.

[0025] The method of the present invention has simple steps. By improving the top surface of the vibration isolation retaining wall at the position of the horizontal isolation seam and the bottom surface structure at the edge position of the vibration isolation cover plate, the height of the horizontal isolation seam is reduced, and the edge gap of the horizontal isolation seam is sealed by a sealing strip, so as to have a good waterproof treatment effect. When an earthquake occurs, the vibration isolation support can be tilted in any direction, and the vibration isolation cover plate can be prevented from vibrating too much by cooperating with the limiting block and the limiting groove. The ball bearing is used to consume the seismic energy input into the vibration isolation cover plate, and the vibration isolation cover plate can slide freely in any direction. In addition, the positioning groove is provided to facilitate the later maintenance of the structure, the implementation effect is good, and it is easy to promote and use.

[0026] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a diagram showing the use status of the seismic isolation structure of the present invention.

[0028] Figure 2 It is a structural schematic diagram of the seismic isolation structure of the present invention.

[0029] Figure 3 It is a structural schematic diagram of the top surface of the vibration isolation retaining wall of the present invention.

[0030] Figure 4 for Figure 3 Structural diagram of installing prefabricated blocks.

[0031] Figure 5 This is a schematic structural diagram of the vibration isolation cover plate of the present invention with the bottom surface facing upward.

[0032] Figure 6 It is a grayscale schematic diagram of the coordination relationship of the seismic isolation structure of the present invention.

[0033] Figure 7 This is a schematic diagram of the buried pressure sensor of the present invention.

[0034] Figure 8 It is a flowchart of the method of the present invention.

[0035] Description of the accompanying drawings:

[0036] 1—Vibration isolation support; 2—Vibration isolation cover; 3—Vibration isolation retaining wall;

[0037] 4—Horizontal isolation joint; 5—Ball; 6—Limiting block;

[0038] 7—positioning groove; 8—snake-shaped groove; 9—prefabricated block;

[0039] 10—Limiting groove; 11—Pressure sensor. DETAILED DESCRIPTION

[0040] like Figures 1 to 8 As shown, a horizontal isolation joint seismic isolation method of the present invention includes the following steps:

[0041] Step 1. Construction of the vibration isolation retaining wall of the building structure: When constructing the vibration isolation retaining wall 3 to the top position, construct a serpentine groove 8 on the top surface of the vibration isolation retaining wall 3, and construct a plurality of limit blocks 6 on the top surface of the vibration isolation retaining wall 3 and on both sides of the serpentine groove 8. In addition, construct a plurality of positioning grooves 7 for placing prefabricated blocks 9 or jacks on the inner and outer sides of the top of the vibration isolation retaining wall 3;

[0042] Among them, a plurality of pressure sensors 11 are pre-buried in the bottom of the serpentine groove 8 along the extension direction;

[0043] Step 2: Construction of the vibration isolation cover of the building structure: When constructing the vibration isolation cover 2 to the edge position, construct a limiting groove 10 on the bottom surface of the edge position of the vibration isolation cover 2 to match the limiting block 6 and the serpentine groove 8;

[0044] A horizontal isolation gap 4 is formed between the top surface of the vibration isolation retaining wall 3 and the bottom surface of the edge of the vibration isolation cover 2. The width of the horizontal isolation gap 4 is 2 mm to 5 mm, and the height of the limit block 6 is greater than the width of the horizontal isolation gap 4.

[0045] Step 3: Place the balls: Install jacks at the positions of the positioning grooves 7, use multiple jacks to raise the height of the vibration isolation cover plate 2, and place multiple balls 5 in sequence along the extension direction of the serpentine groove 8. The diameter of the balls 5 is greater than the depth of the serpentine groove 8, and the height of the limit blocks 6 is less than the height of the portion of the balls 5 extending out of the serpentine groove 8. After placing the multiple balls 5, use multiple jacks to reset the vibration isolation cover plate 2, and the vibration isolation cover plate 2 is supported by the vibration isolation support 1.

[0046] Remove multiple jacks and replace prefabricated blocks 9 at the positions of positioning grooves 7;

[0047] At this time, the ball 5 abuts against the bottom of the limiting groove 10;

[0048] Step 4: The edges of the horizontal isolation joints are sealed with flexible sealing strips to complete the construction of the horizontal isolation joint seismic isolation structure;

[0049] Step 5: Horizontal isolation joint seismic isolation: When an earthquake occurs, the vibration isolation support 1 is deformed, and the limit block 6 and the limit groove 10 cooperate to prevent the vibration isolation cover 2 from vibrating too much. The multiple balls 5 consume the seismic energy input to the vibration isolation cover 2, and the multiple balls 5 enable the vibration isolation cover 2 to slide freely in any direction. At the same time, multiple pressure sensors 11 are used to collect the pressure on the top surface of the vibration isolation retaining wall 3 in real time;

[0050] Step 6: Determine whether to replace the ball bearings: When the pressure value of the top surface of the vibration isolation retaining wall 3 collected in real time by the multiple pressure sensors 11 is greater than the pressure threshold, execute step 7; otherwise, there is no need to replace the ball bearings 5;

[0051] It should be noted that the pressure threshold is the maximum pressure value that the ball 5 can withstand.

[0052] Step 7: Replace the balls and seal the horizontal isolation joints: After the earthquake, remove the multiple prefabricated blocks 9, replace the jacks at the positions of the positioning grooves 7, use the multiple jacks to raise the height of the vibration isolation cover plate 2, replace the multiple old balls 5 in the serpentine grooves 8 with new balls 5, and use the multiple jacks to reset the vibration isolation cover plate 2, which is supported by the vibration isolation support 1;

[0053] Then remove several jacks and replace the prefabricated blocks 9 at the positions of the positioning grooves 7;

[0054] The edge of the horizontal isolation seam 4 is sealed again by a flexible sealing strip.

[0055] It should be noted that when an earthquake occurs again, steps five to seven are repeated, and the vibration isolation cover plate 2 and the vibration isolation retaining wall 3 at the position of the horizontal isolation seam 4 slide relative to each other smoothly without obstruction, and the vibration isolation effect is good.

[0056] In this embodiment, the inner wall of the serpentine groove 8 is an arc-shaped structure adapted to the ball 5 .

[0057] In this embodiment, the flexible sealing strip is a rubber water-proof sealing strip;

[0058] In step five, when an earthquake occurs, the vibration isolation support 1 deforms and drives the vibration isolation cover 2 to slide freely in any direction, and the flexible sealing strip is squeezed out from the edge of the horizontal isolation seam 4 and falls off by itself.

[0059] It should be noted that the flexible rubber water-proof sealing strip is squeezed out of the horizontal isolation seam 4 through the dislocation deformation of the horizontal isolation seam 4. Since the flexible rubber water-proof sealing strip is light in weight, it will not cause harm to people and objects.

[0060] In this embodiment, the top surface of the prefabricated block 9 is flush with the top surface of the vibration isolation retaining wall 3 .

[0061] In this embodiment, the balls 5 are concrete balls, the strength of which is less than the concrete strength of the vibration isolation retaining wall 3 and the vibration isolation cover plate 2 , and a recessed angle structure is provided at the matching position of the limiting groove 10 and the limiting block 6 .

[0062] It should be noted that when an earthquake occurs, the concrete balls are crushed by themselves to offset the upward and downward vibration forces of the earthquake.

[0063] In step six, the pressure value of the pressure on the top surface of the vibration isolation retaining wall 3 collected by the multiple pressure sensors 11 in real time is the average value of the values ​​collected by the multiple pressure sensors 11.

[0064] When the present invention is implemented, the method and steps are simple. By improving the top surface of the vibration isolation retaining wall at the horizontal isolation seam position and the bottom surface structure at the edge position of the vibration isolation cover plate, the height of the horizontal isolation seam is reduced, and the edge gap of the horizontal isolation seam is sealed by a sealing strip, the waterproof treatment effect is good. When an earthquake occurs, the vibration isolation support can be tilted in any direction, and the limit block and the limit groove can cooperate to prevent the vibration isolation cover plate from vibrating too much. The ball bearing is used to consume the seismic energy input into the vibration isolation cover plate, and the vibration isolation cover plate can slide freely in any direction. In addition, the positioning groove is provided to facilitate the later maintenance of the structure, and the implementation effect is good.

[0065] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent structural change made to the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A horizontal isolation joint seismic isolation method, characterized in that: The method comprises the following steps: Step 1, construction of the vibration isolation retaining wall of the building structure: when constructing the vibration isolation retaining wall (3) to the top position, construct a serpentine groove (8) on the top surface of the vibration isolation retaining wall (3), construct a plurality of limit blocks (6) on the top surface of the vibration isolation retaining wall (3) and on both sides of the serpentine groove (8), and further construct a plurality of positioning grooves (7) for placing prefabricated blocks (9) or jacks on both inner and outer sides of the top of the vibration isolation retaining wall (3); Wherein, a plurality of pressure sensors (11) are pre-buried at the bottom of the serpentine groove (8) along the extension direction; Step 2: Construction of the vibration isolation cover plate of the building structure: When the vibration isolation cover plate (2) is constructed to the edge position, a limiting groove (10) adapted to the limiting block (6) and the serpentine groove (8) is constructed on the bottom surface of the edge position of the vibration isolation cover plate (2); A horizontal isolation gap (4) is formed between the top surface of the vibration isolation retaining wall (3) and the bottom surface of the edge of the vibration isolation cover plate (2), the width of the horizontal isolation gap (4) is 2 mm to 5 mm, and the height of the limit block (6) is greater than the width of the horizontal isolation gap (4); Step 3, placing the balls: installing jacks at the position of the positioning groove (7), using multiple jacks to raise the height of the vibration isolation cover (2), and placing multiple balls (5) in sequence along the extension direction of the serpentine groove (8), wherein the diameter of the balls (5) is greater than the depth of the serpentine groove (8), and the height of the limit block (6) is less than the height of the portion of the balls (5) extending out of the serpentine groove (8). After placing the multiple balls (5), using multiple jacks to reset the vibration isolation cover (2), the vibration isolation cover (2) is supported by the vibration isolation support (1); Remove multiple jacks and replace the prefabricated blocks (9) at the positions of the positioning grooves (7); At this time, the ball (5) contacts the bottom of the limiting groove (10); Step 4: The edges of the horizontal isolation joints are sealed with flexible sealing strips to complete the construction of the horizontal isolation joint seismic isolation structure; Step 5, horizontal isolation seam seismic isolation: when an earthquake occurs, the vibration isolation support (1) is deformed, and the limit block (6) and the limit groove (10) cooperate to prevent the vibration isolation cover (2) from vibrating too much, and the multiple balls (5) are used to consume the earthquake energy input to the vibration isolation cover (2). The multiple balls (5) enable the vibration isolation cover (2) to slide freely in any direction, and at the same time, the multiple pressure sensors (11) are used to collect the pressure on the top surface of the vibration isolation retaining wall (3) in real time; Step 6: Determine whether to replace the ball bearing: When the pressure value of the top surface of the vibration isolation retaining wall (3) collected in real time by the multiple pressure sensors (11) is greater than the pressure threshold, execute step 7; otherwise, there is no need to replace the ball bearing (5); Step 7: Replace the balls and seal the horizontal isolation joints: After the earthquake, remove the multiple prefabricated blocks (9), replace the jacks at the positions of the positioning grooves (7), use the multiple jacks to raise the height of the vibration isolation cover plate (2), replace the multiple old balls (5) in the serpentine grooves (8) with new balls (5), and use the multiple jacks to reset the vibration isolation cover plate (2), which is supported by the vibration isolation support (1); Then remove the multiple jacks and replace the prefabricated blocks (9) at the positions of the positioning grooves (7); The edge of the horizontal isolation seam (4) is sealed again by a flexible sealing strip.

2. A horizontal isolation joint seismic isolation method according to claim 1, characterized in that: The inner wall of the serpentine groove (8) is an arc-shaped structure adapted to the ball (5).

3. A horizontal isolation joint seismic isolation method according to claim 1, characterized in that: The flexible sealing strip is a rubber water-proof sealing strip; In step five, when an earthquake occurs, the vibration isolation support (1) deforms and drives the vibration isolation cover (2) to slide freely in any direction, and the flexible sealing strip is squeezed out from the edge of the horizontal isolation seam (4) and falls off by itself.

4. A horizontal isolation joint seismic isolation method according to claim 1, characterized in that: The top surface of the prefabricated block (9) is flush with the top surface of the vibration isolation retaining wall (3).

5. A horizontal isolation joint seismic isolation method according to claim 1, characterized in that: The ball bearings (5) are concrete ball bearings, the strength of which is less than the concrete strength of the vibration isolation retaining wall (3) and the vibration isolation cover plate (2), and a recessed angle structure is provided at the matching position of the limiting groove (10) and the limiting block (6).

6. A horizontal isolation joint seismic isolation method according to claim 1, characterized in that: In step six, the pressure value of the pressure on the top surface of the vibration isolation retaining wall (3) collected by the multiple pressure sensors (11) in real time is the average value of the values ​​collected by the multiple pressure sensors (11).

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