Fixing device for assisting construction of parallel three-dimensional shock insulation system

Abstract

The invention discloses a fixing device for assisting the construction of a parallel three-dimensional seismic isolation system, which comprises the parallel three-dimensional seismic isolation system and a temporary fixing device for assisting the construction of the parallel three-dimensional seismic isolation system, and the parallel three-dimensional seismic isolation system comprises an upper building, a lower foundation and a seismic isolation layer arranged between the upper building and the lower foundation; the shock insulation layer comprises a plurality of boot cap type shock insulation supports, a plurality of sliding type spring shock insulation supports and a shock insulation layer top plate. The temporary fixing device comprises a first temporary fixing support and a second temporary fixing support, the first temporary fixing support is detachably installed on the boot cap type vibration isolation support, and the second temporary fixing support is detachably installed on the sliding type spring vibration isolation support. The fixing device is used for assisting construction of a parallel three-dimensional seismic isolation system, and the defect that construction is affected due to the fact that a boot cap type seismic isolation support has the function of absorbing horizontal seismic oscillation and a sliding type spring seismic isolation support has the function of absorbing vertical vibration is overcome.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, and in particular to a fixing device for assisting the construction of a parallel three-dimensional seismic isolation system. Background Art

[0002] A certain song and dance theater project is adjacent to the urban rail transit line, so environmental vibration and noise control have become issues that must be addressed in the design of the song and dance theater project. The use of spring isolators is an important means of controlling vertical vibration. Since the horizontal limit deformation allowed by the spring isolator is very small, generally only 20 to 30 mm, when the horizontal limit deformation is exceeded, the vertical bearing capacity of the spring is sharply reduced. Controlling the horizontal deformation of the spring isolator not to exceed the limit value is a crucial factor in engineering safety.

[0003] When designing the song and dance theater project, it is taken into consideration that an earthquake will cause a large horizontal deformation of the song and dance theater project. When spring isolators are used to reduce the vertical vibration of the song and dance theater, viscous dampers are also required to be set in the isolation layer to control the horizontal deformation of the spring isolators within the design allowable range to ensure the normal operation of the spring isolators.

[0004] Since the spring isolator allows a small horizontal displacement, a large-tonnage viscous damper is required to limit the displacement of the isolation layer to the position limit allowed by the spring isolator. Large-tonnage viscous dampers are not only expensive, but also have large internal forces in the components at the connection and complex connection structures. Since the displacement of the isolation layer is limited to a small range by the viscous damper, the horizontal equivalent stiffness of the isolation layer is large and cannot effectively reduce the seismic effect transmitted to the upper building. The isolation effect is poor and it is difficult to achieve the goal of dual isolation of vertical vibration and horizontal earthquake.

[0005] In order to solve the above problems, a building structure with a parallel three-dimensional seismic isolation system was adopted in a certain song and dance theater project, which achieved the purpose of double isolation of vertical vibration and horizontal vibration. However, during construction, the seismic isolation layer of the building structure with the parallel three-dimensional seismic isolation system needs to be temporarily fixed before the construction of the building structure with the parallel three-dimensional seismic isolation system can be carried out. However, the existing temporary fixing device is not only too complicated in structure, but also difficult to construct. It cannot meet the requirements for the gap between the boot cap buckle cover and the installation accuracy of the mirror sliding plate, affecting the construction of the entire project. Summary of the invention

[0006] The purpose of the present invention is to provide a fixing device for assisting the construction of a parallel three-dimensional seismic isolation system, which solves the construction problem of the parallel three-dimensional seismic isolation system.

[0007] To achieve the above object, the present invention adopts the following technical solutions: A fixing device for assisting the construction of a parallel three-dimensional seismic isolation system, comprising a parallel three-dimensional seismic isolation system and a temporary fixing device for assisting the construction of the parallel three-dimensional seismic isolation system, wherein the parallel three-dimensional seismic isolation system comprises an upper building, a lower foundation, and a seismic isolation layer arranged between the upper building and the lower foundation; The seismic isolation layer includes a plurality of boot-hat-type seismic isolation bearings, a plurality of sliding spring seismic isolation bearings and a seismic isolation layer top plate. The seismic isolation layer top plate is a concrete casting layer including a keel frame. A plurality of boot-hat-type seismic isolation bearings are used to connect the lower building and the keel frame and absorb horizontal ground vibrations. A plurality of sliding spring seismic isolation bearings are arranged around each boot-hat-type seismic isolation bearing to absorb vertical vibrations. The temporary fixing device includes a first temporary fixing support and a second temporary fixing support. The first temporary fixing support is a temporary fixing support that can be detachably installed on the boot-cap type vibration isolation support, and the second temporary fixing support is a temporary fixing support that can be detachably installed on the sliding spring vibration isolation support.

[0008] Preferably, the keel frame is composed of multiple beams arranged in a horizontal and vertical staggered manner, a boot-cap type seismic isolation bearing is arranged at the center position of the horizontal and vertical staggered parts of the beams, and two or more sliding spring vibration isolation bearings are arranged around the boot-cap type seismic isolation bearing.

[0009] Preferably, the boot-cap type seismic isolation bearing includes a boot-cap buckle cover, a vibration-damping rubber pad, a stiffening plate, an upper bearing plate, a rubber laminate, a lower bearing, and anti-pullout bolts. The lower bearing is fixedly installed on the lower foundation, a lead core is vertically installed at the center of the lower bearing, a rubber laminate is mounted on the lead core, an upper bearing plate is installed on the top of the rubber laminate, a plurality of through holes are evenly arranged on the upper bearing plate, one end of the anti-pullout bolt passes through the through hole and is threadedly connected to the boot-cap buckle cover, a stiffening plate and a vibration-damping rubber pad are sequentially arranged between the upper bearing plate and the boot-cap buckle cover from bottom to top, and the boot-cap buckle cover is guided by a plurality of anti-pullout bolts and moves on the top of the upper bearing plate.

[0010] Preferably, the first temporary fixed support is arranged between the upper support plate and the boot cap buckle cover; the first temporary support includes a plurality of L-shaped clips, which are made of L-shaped angle steels and are provided with U-shaped grooves on the bottom surfaces; the L-shaped clips are detachably mounted on the bottom of the upper support plate by tension bolts, and the top side surfaces of the L-shaped clips are supported on the bottom of the boot cap buckle cover, so that the upper support plate and the boot cap buckle cover are in a state of maximum spacing.

[0011] Preferably, the tension bolts are selected based on: , and , In the formula, f 1 is the design tensile bearing capacity of the tensile bolt; Gis the concrete bulk density; h 1 is the height of the beam; b 1 is the beam width; L 1 is the span of the beam; h 2 is the floor thickness of the superstructure; b 2 is the floor width of the superstructure; L 2 is the floor span of the superstructure; n is the number of L-shaped buckles; F 2 is the load of a single construction worker; D 1 is the straight-line distance between the construction worker's standing position and the lead core axis; D 2 is the straight-line distance between the axis of the tension bolt and the axis of the lead core; N The maximum number of construction workers who can stand.

[0012] Preferably, the sliding spring vibration isolation support includes a spring seat, a sliding table and a mirror sliding plate. The spring seat is installed on the lower foundation, and a sliding table is arranged on the spring seat. The mirror sliding plate is fixedly installed on the bottom of the keel frame, and the sliding table and the mirror sliding plate are in fit and sliding contact.

[0013] Preferably, the spring seat includes multiple springs, an elastic shell, multiple pull rods, an upper stiffening plate and a lower stiffening plate. The upper stiffening plate is installed on the lower foundation. Multiple springs are connected between the middle parts of the upper stiffening plate and the lower stiffening plate, and the four sides are limited and pulled by multiple pull rods. Elastic shells are arranged between the upper stiffening plate and the lower stiffening plate and outside the multiple pull rods. Threaded sections are arranged at both ends of the pull rods. One end of the pull rod is threadedly connected to the threaded hole of the lower stiffening plate, and the other end of the pull rod passes through the through hole of the upper stiffening plate and is threadedly connected to a nut. A gasket is arranged between the nut and the upper stiffening plate.

[0014] Preferably, the second temporary fixed support is arranged between the upper stiffening plate and the mirror sliding plate; the second temporary fixed support includes a plurality of oblique support rods, two connecting blocks are arranged in parallel at both ends of the oblique support rods, and the upper ends of the oblique support rods are detachably mounted on the mirror sliding plate, and the lower ends are detachably mounted on the upper stiffening plate by fixing bolts at the connecting blocks.

[0015] Preferably, the fixing bolts are selected based on: , In the formula, f 2 is the designed tensile bearing capacity of the fixing bolts; F 2 is the load of a single construction worker; N The maximum number of construction workers who can stand; U 1 is the distance between the fixing bolt installed at the upper end of the inclined support rod and the torque balance point; U2 is the distance between the fixing bolt installed at the lower end of the oblique support rod and the torque balance point; the torque balance point is the midpoint of the connection between the lower end of the oblique support rod and the connecting block, and this point is in direct contact with the upper stiffening plate.

[0016] In the present invention, the fixing device is used to assist the construction of the parallel three-dimensional seismic isolation system, eliminating the drawbacks of affecting the construction due to the function of the boot-cap type seismic isolation bearing to absorb horizontal ground vibrations and the function of the sliding spring seismic isolation bearing to absorb vertical vibrations.

[0017] An isolation layer consisting of multiple boot-cap type isolation bearings and multiple sliding spring isolation bearings is installed between the upper building and the top plate of the isolation layer by bolts to solve the structural comfort problem caused by subway vibration, effectively isolate the earthquake effect from three dimensions, ensure the safety of the upper building, and is easy to disassemble and replace.

[0018] The existing spring vibration isolation bearing does not have a sliding function, that is, there is no mirror sliding plate on the top. Therefore, there is no need to consider the fixation and installation accuracy of the mirror sliding plate during the installation process. The sliding spring vibration isolation bearing in the present invention has the function of absorbing the vertical vibration of the building structure. During the specific structural design, the sliding spring vibration isolation bearing is not a completely connected whole. It requires the assistance of a second temporary fixed support during construction and installation. The second temporary fixed support can effectively fix the mirror sliding plate to the sliding table during the construction and installation process to ensure the horizontality and plane positioning of the mirror sliding plate, increase the on-site installation accuracy, and support the mirror sliding plate to prevent the mirror sliding plate from being deformed due to the bias of the construction load during the construction process, thereby protecting the sliding spring vibration isolation bearing.

[0019] The mirror sliding plate of the sliding spring vibration isolation support used in the present invention is located on the top surface of the sliding table and can only be located on the top surface. If the mirror sliding plate is located on the bottom surface of the sliding table, that is, the sliding spring vibration isolation support is used upside down, then during construction, the size of the lower pier positioning plate should be consistent with the size of the mirror sliding plate, which not only increases the cost, but also increases the difficulty of construction. Because the flatness requirements for the lower pier positioning plate are relatively high during the construction process, that is, the flatness requirement is ±2mm / m, the larger the size of the lower pier positioning plate, the greater the impact on the flatness of the lower pier positioning plate during transportation and hoisting. On the other hand, due to the complex on-site construction environment and the existence of cross-operation, before the lower pier is poured with concrete, it is inevitable that the operator will step on or place heavy objects on the lower pier positioning plate. In order to minimize the impact of on-site construction on the flatness of the lower pier positioning plate, the size of the lower pier positioning plate needs to be minimized. On the other hand, due to the large size of the mirror sliding plate and the low friction coefficient of the sliding surface, the friction coefficient of the mirror sliding plate is required to be ≤0.015. If the mirror sliding plate is at the bottom, it will be polluted by dust during construction or long-term use, resulting in an increase in the friction coefficient and affecting the seismic isolation effect. If the mirror sliding plate is placed upside down on the vibration isolator, the smoothness and friction coefficient of the mirror sliding plate will not be affected. That is, the mirror sliding plate should be located on the top surface of the sliding table.

[0020] Existing spring isolation bearings are not equipped with dampers or are fully equipped with dampers before leaving the factory, which may result in over-damping or under-damping, and cannot achieve accurate control of structural vibration. In the present invention, the sliding spring isolation bearing adopts an installation method of additional dampers, and dampers are installed as needed according to the fourth on-site vibration test results, so as to solve specific vibration problems in a targeted manner and effectively achieve shock absorption effects.

[0021] The boot-cap type seismic isolation bearings all have the function of absorbing horizontal vibrations. In addition to the vibration-damping rubber pads set on the structure, there is also a gap between the boot-cap buckle cover and the upper support plate. The first temporary fixed support ensures the gap between the boot-cap buckle cover and the upper support plate. The first temporary fixed support is transferred and completed before leaving the factory. There is no need to adjust the horizontality and elevation of the boot-cap on site, which facilitates the on-site hoisting and construction and installation of the boot-cap type seismic isolation bearing, greatly increasing the on-site installation efficiency.

[0022] The first temporary fixing support and the second temporary fixing support are designed in structure and size, and the structure is simple and easy to install and disassemble.

[0023] The sliding spring isolation bearing is installed on the lower pier positioning plate covered with a rubber pad by bolts, and rubber sleeves and rubber pads are arranged on the bolts to further isolate the transmission rate of noise and vibration along the metal components.

[0024] The spring seat of the sliding spring isolation bearing is pre-stressed during the processing and manufacturing stage, thereby ensuring that the boot-cap type isolation bearing and the sliding spring isolation bearing do not need to be unloaded over a large area after installation, ensuring that the stiffness of the sliding spring isolation bearing does not change, and that the gap between the boot-cap buckle cover of the sliding spring isolation bearing and the upper bearing plate is not affected, reducing the difficulty of construction operations.

[0025] Four site vibration tests were carried out during the construction process. Based on the actual measured data on site, the damping of the sliding spring isolation bearing was adjusted by adding dampers to provide precise damping for the entire building structure and ensure that the on-site vibration control achieved the best effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a partial layout diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the boot-hat type seismic isolation support of the present invention; Figure 3 It is a cross-sectional view of the boot-hat type seismic isolation support structure of the present invention; Figure 4 It is a partial enlarged schematic diagram of B of the present invention; Figure 5 It is a schematic diagram of the structure of the sliding spring vibration isolation support of the present invention; Figure 6 It is a cutaway view of the sliding spring vibration isolation support of the present invention; Figure 7 This is an axonometric view of the sliding spring vibration isolation support of the present invention; Figure 8 It is a partial enlarged schematic diagram of A of the present invention; Fig. 9 This is a schematic diagram of the L-shaped buckle structure of the present invention; In the figure: 0, seismic isolation layer; 1, upper building; 2, lower foundation; 3, boot-cap type seismic isolation bearing; 4, sliding spring seismic isolation bearing; 5, first temporary fixed support; 6, second temporary fixed support; 7, seismic isolation layer top plate; 30, boot-cap buckle cover; 31, vibration-damping rubber pad; 32, stiffening plate; 33, upper support plate; 35, rubber laminate; 36, lower support; 37, anti-pullout bolt; 38, lead core; 40, spring seat; 42, sliding table; 43, mirror sliding plate; 50, L-shaped buckle; 51, tensile bolt; 60, oblique support rod; 61, connecting block; 62, fixing bolt; 63, torque balance point; 70, keel frame; 400, spring; 401, elastic shell; 402, pull rod; 403, upper stiffening plate; 404, lower stiffening plate; 405, nut; 700, beam. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings: like Figures 1 to 9A fixing device for assisting the construction of a parallel three-dimensional seismic isolation system is shown, comprising a parallel three-dimensional seismic isolation system and a temporary fixing device for assisting the construction of the parallel three-dimensional seismic isolation system. The parallel three-dimensional seismic isolation system comprises an upper building 1, a lower foundation 2, and an isolation layer 0 arranged between the upper building 1 and the lower foundation 2.

[0028] The seismic isolation layer 0 includes a plurality of boot-hat type seismic isolation bearings 3, a plurality of sliding spring seismic isolation bearings 4 and a seismic isolation layer top plate 7. The seismic isolation layer top plate 7 is a concrete casting layer and includes a keel frame 70. The lower building 1 and the keel frame 70 are connected and absorb horizontal ground vibrations through a plurality of boot-hat type seismic isolation bearings 3. A plurality of sliding spring seismic isolation bearings 4 are arranged around each boot-hat type seismic isolation bearing 3 to absorb vertical vibrations.

[0029] The keel frame 70 is composed of multiple horizontal and vertical staggered beams 700, a boot-cap type seismic isolation support 3 is arranged at the center of the horizontal and vertical staggered parts of the beams 700, and two or more sliding spring vibration isolation supports 4 are arranged around the boot-cap type seismic isolation support 3.

[0030] The boot-cap type seismic isolation bearing 3 includes a boot-cap buckle cover 30, a vibration-damping rubber pad 31, a stiffening plate 32, an upper bearing plate 33, a rubber laminate 35, a lower bearing 36, and an anti-pullout bolt 37. The lower bearing 36 is fixedly installed on the lower foundation 2. A lead core 38 is vertically installed at the center of the lower bearing 36. A rubber laminate 35 is mounted on the lead core 38. An upper bearing plate 33 is installed on the top of the rubber laminate 35. A plurality of through holes are evenly arranged on the upper bearing plate 33. One end of the anti-pullout bolt 37 passes through the through hole and is threadedly connected to the boot-cap buckle cover 30. A stiffening plate 32 and a vibration-damping rubber pad 31 are sequentially arranged from bottom to top between the upper bearing plate 33 and the boot-cap buckle cover 30. The boot-cap buckle cover 30 is guided by a plurality of anti-pullout bolts 37 and moves on the top of the upper bearing plate 33.

[0031] The sliding spring vibration isolation support 4 includes a spring seat 40, a sliding table 42 and a mirror sliding plate 43. The spring seat 40 is installed on the lower foundation 2, and a sliding table 42 is provided on the spring seat 40. The mirror sliding plate 43 is fixedly installed at the bottom of the keel frame 70. The sliding table 42 and the mirror sliding plate 43 are in contact with each other and in sliding manner.

[0032] In this example, the spring seat 40 includes multiple springs 400, an elastic shell 401, multiple tie rods 402, an upper stiffening plate 403 and a lower stiffening plate 404. The upper stiffening plate 403 is installed on the lower foundation 2. Multiple springs 400 are connected between the middle parts of the upper stiffening plate 403 and the lower stiffening plate 404, and are limited and pulled around by multiple tie rods 402. An elastic shell 401 is arranged between the upper stiffening plate 403 and the lower stiffening plate 404 and on the periphery of the multiple tie rods 402. Threaded sections are arranged at both ends of the tie rod 402. One end of the tie rod 402 is threadedly connected to the threaded hole of the lower stiffening plate 404, and the other end of the tie rod 402 passes through the through hole of the upper stiffening plate 403 and is threadedly connected to a nut 405. A gasket is arranged between the nut 405 and the upper stiffening plate 403.

[0033] The temporary fixing device includes a first temporary fixing support 5 and a second temporary fixing support 6. The first temporary fixing support 5 is a temporary fixing support and can be detachably installed on the boot-cap type vibration isolation support 3. The second temporary fixing support 6 is a temporary fixing support and can be detachably installed on the sliding spring vibration isolation support 4.

[0034] The first temporary fixed support 5 is arranged between the upper support plate 33 and the boot cap buckle cover 30; the first temporary support 5 includes a plurality of L-shaped buckles 50, the L-shaped buckles 50 are made of L-shaped angle steel and are provided with a U-shaped groove on the bottom surface; the L-shaped buckles 50 are detachably mounted on the bottom of the upper support plate 33 by means of tension bolts 51, and the top side of the L-shaped buckle 50 is supported on the bottom of the boot cap buckle cover 30, so that the upper support plate 33 and the boot cap buckle cover 30 are in a maximum spacing state.

[0035] The second temporary fixed support 6 is arranged between the upper stiffening plate 403 and the mirror sliding plate 43; the second temporary fixed support 6 includes a plurality of inclined support rods 60, and two connecting blocks 61 are arranged in parallel at both ends of the inclined support rods 60. The upper ends of the inclined support rods 60 are detachably mounted on the mirror sliding plate 43, and the lower ends are detachably mounted on the upper stiffening plate 403 through fixing bolts 62 at the connecting blocks 61.

[0036] A method for using a fixing device for assisting the construction of a parallel three-dimensional seismic isolation system comprises the following steps: Step 1: Determine the three-dimensional seismic isolation layout diagram: construct a seismic isolation layer 0 between the upper building 1 and the lower foundation 2; Step 2: First detection of site vibration; Step 3: Foundation pit construction: excavate the foundation pit and construct the foundation raft slab in the foundation pit; Step 4: Second site vibration test; Step 5, construction of lower foundation 2: hoist the steel beam and tie the steel bars in the foundation pit, support the lower pier positioning plate on the tied steel bar layer according to the vibration dual control layout diagram, then tie the lower pier steel bars between the lower pier positioning plate and the steel bar layer, pour concrete to the top of the steel beam, then remove the foundation pit support and pour the lower pier; after the lower pier is poured, protect the lower pier from immersion, and then remove the support around the foundation pit; Step 6: Third site vibration test; Step 7, preparation before installation: install the first temporary fixed support 5 on the boot-hat type seismic isolation support 3, specifically, the L-shaped buckle 50 is detachably installed on the bottom of the upper support plate 33 through the tension bolt 51, and the top of the side of the L-shaped buckle 50 is supported on the bottom of the boot-hat buckle cover 30, so that the upper support plate 33 and the boot-hat buckle cover 30 are in the maximum spacing state; The selection basis of the tensile bolt 51 is: , and , In the formula, f 1 is the designed tensile bearing capacity of the tensile bolt 51; G is the concrete bulk density; h 1 is the beam height of 700; b 1 is the beam width of 700; L 1 is the span of the beam 700; h 2 is the floor thickness of the superstructure; b 2 is the floor width of the superstructure; L 2 is the floor span of the superstructure; n is the number of L-shaped buckles; F 2 is the load of a single construction worker; D 1 is the straight-line distance between the construction worker's standing position and the lead core axis; D 2 is the straight-line distance between the axis of the tension bolt 51 and the axis of the lead core; N The maximum number of construction workers who can stand; The sliding spring vibration isolation support 4 is preloaded before leaving the factory and the spring seat 40 is locked as a whole through the pull rod 402, the processing quality of the boot-cap type vibration isolation support 3 and the sliding spring vibration isolation support 4 is tested, and the horizontality of the lower pier positioning plate is tested; Step 8: Install the boot-hat type seismic isolation bearing 3: Install the boot-hat type seismic isolation bearing 3 on the lower pier positioning plate according to the vibration dual control layout diagram; Step nine, installing the sliding spring vibration isolation support 4: first lay a rubber pad on the lower pier positioning plate, then install the sliding spring vibration isolation support 4 on the rubber pad layer, and then install the second temporary fixed support 6 on the sliding spring vibration isolation support 4; The loading force F of the preloaded sliding spring vibration isolation support 4 satisfies: , In the formula, F 恒 The constant load borne by the sliding spring vibration isolation support 4 is: , in, G is the concrete bulk density; h 1 is the beam height of 700; b 1 is the beam width of 700; L 1 is the span of the beam 700; h 2 is the floor thickness of the superstructure; b 2 is the floor width of the superstructure; L 2 is the floor span of the superstructure; F 活 Live load borne by sliding spring vibration isolation support 4: , in, F 2 is the load of a single construction worker; D 1 is the straight-line distance between the construction worker's standing position and the center line of the sliding spring vibration isolation support 4; D 2 is the straight-line distance between the axis of the tension bolt 51 and the axis of the lead core or the straight-line distance between the fixing bolt 62 and the center line of the sliding spring vibration isolation support 4; N The maximum number of construction workers who can stand; In order to prevent the mirror sliding plate 43 from being deformed during transportation and hoisting, the sliding spring vibration isolation support 4 is assembled into a whole by the spring seat 40 and the sliding table 42 when it leaves the factory, and the whole is first installed on the rubber cushion layer, and then the mirror sliding plate 43 is placed on the whole, and then the second temporary fixed support 6 is installed. Specifically, the upper end of the oblique support rod 60 is detachably installed on the mirror sliding plate 43 and the lower end is detachably installed on the upper stiffening plate 403 at the connecting block 61 through the fixing bolt 62; The selection basis of the fixing bolt 62 is: , In the formula, f 2 is the designed tensile bearing capacity of the fixing bolt 62; F 2 is the load of a single construction worker; N The maximum number of construction workers who can stand; U 1 is the distance between the fixing bolt 62 installed at the upper end of the inclined support rod and the torque balance point 63; U 2 is the distance between the fixing bolt 62 installed at the lower end of the oblique support rod and the torque balance point 63; the torque balance point 63 is the midpoint of the connection between the lower end of the oblique support rod 60 and the connecting block 61, and this point is in direct contact with the upper stiffening plate 403; Step 10, constructing the top plate 7 of the seismic isolation layer: firstly, installing the keel frame 70 on the top of the boot-cap type seismic isolation support 3 and the sliding spring seismic isolation support 4 and tying the steel bars, and then pouring concrete in sections to complete the construction of the top plate 7 of the seismic isolation layer; Step 11: removing the first temporary fixed support 5; Step 12, constructing the superstructure 1: constructing the superstructure 1 structure based on the top plate 7 of the seismic isolation layer, and observing the deformation of the boot-cap type seismic isolation bearing 3 and the sliding spring seismic isolation bearing 4 in real time during the construction of the superstructure 1; Step 13: dismantle the second temporary fixed support 6; Step 14, unloading the sliding spring vibration isolation support 4: After the upper structure 1 is capped and the secondary masonry is completed, check whether the nut 405 at the top of the pull rod 402 is loose or whether there is a gap in the gasket in order from the small-tonnage sliding spring vibration isolation support 4 to the large-tonnage sliding spring vibration isolation support 4; If there is looseness or gap, it indicates that the sliding spring vibration isolation support 4 has entered a normal working state and does not need to be unloaded; If there is no looseness or gap, it indicates that the sliding spring vibration isolation support 4 needs to be unloaded; The unloading of the sliding spring vibration isolation support 4 is specifically to loosen the nut 405; Step 15: Fourth site vibration test; Step 16: Installation of additional damper: According to the fourth site vibration test result, an additional damper is installed on the sliding spring vibration isolation support 4; Step 17: Fifth site vibration test.

[0037] The additional damper is installed between the lower stiffening plate 404 and the upper stiffening plate 403, the additional damper base is installed on the lower stiffening plate 404, the telescopic plug on the top of the additional damper is connected to the upper stiffening plate 403, the bottom of the telescopic plug is a spherical end, the spherical end can be telescopically inserted into the oil groove of the additional damper base, and the oil groove is filled with viscous liquid.

[0038] The above embodiments are only some illustrations of the concept and implementation of the present invention, and are not intended to limit the same. Under the concept of the present invention, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A fixing device for assisting the construction of a parallel three-dimensional seismic isolation system, characterized in that: The invention comprises a parallel three-dimensional seismic isolation system and a temporary fixing device for assisting the construction of the parallel three-dimensional seismic isolation system. The parallel three-dimensional seismic isolation system comprises an upper building (1), a lower foundation (2), and a seismic isolation layer (0) arranged between the upper building (1) and the lower foundation (2); The seismic isolation layer (0) comprises a plurality of boot-hat-type seismic isolation supports (3), a plurality of sliding spring seismic isolation supports (4) and a seismic isolation layer top plate (7); the seismic isolation layer top plate (7) is a concrete casting layer and comprises a keel frame (70); a plurality of boot-hat-type seismic isolation supports (3) are connected between the lower building (1) and the keel frame (70) to absorb horizontal ground vibrations; a plurality of sliding spring seismic isolation supports (4) are arranged around each boot-hat-type seismic isolation support (3) to absorb vertical vibrations; The temporary fixing device comprises a first temporary fixing support (5) and a second temporary fixing support (6), wherein the first temporary fixing support (5) is a temporary fixing support that is detachably mounted on the boot-cap type vibration isolation support (3), and the second temporary fixing support (6) is a temporary fixing support that is detachably mounted on the sliding spring vibration isolation support (4).

2. The fixing device for auxiliary parallel three-dimensional seismic isolation system construction according to claim 1 is characterized in that: The keel frame (70) is composed of a plurality of crossbeams (700) arranged in a transverse and longitudinal staggered manner, a boot-cap type vibration isolation support (3) is arranged at the center of the transverse and longitudinal staggered positions of the crossbeams (700), and two or more sliding spring vibration isolation supports (4) are arranged around the boot-cap type vibration isolation support (3).

3. The fixing device for auxiliary parallel three-dimensional seismic isolation system construction according to claim 2 is characterized in that: The boot-cap type seismic isolation bearing (3) comprises a boot-cap buckle cover (30), a vibration-damping rubber pad (31), a stiffening plate (32), an upper bearing plate (33), a rubber laminate (35), a lower bearing (36), and anti-pullout bolts (37). The lower bearing (36) is fixedly mounted on the lower foundation (2). A lead core (38) is vertically mounted at the center of the lower bearing (36). The rubber laminate (35) is mounted on the lead core (38). 5) An upper support plate (33) is installed on the top, a plurality of through holes are evenly arranged on the upper support plate (33), one end of an anti-pullout bolt (37) passes through the through hole and is threadedly connected to the boot cap buckle cover (30), a stiffening plate (32) and a vibration-damping rubber pad (31) are sequentially arranged between the upper support plate (33) and the boot cap buckle cover (30) from bottom to top, and the boot cap buckle cover (30) is guided by the plurality of anti-pullout bolts (37) and moves on the top of the upper support plate (33).

4. The fixing device for assisting the construction of a parallel three-dimensional seismic isolation system according to claim 3 is characterized in that: The first temporary fixing support (5) is arranged between the upper support plate (33) and the boot cap buckle cover (30); the first temporary support (5) comprises a plurality of L-shaped buckles (50), the L-shaped buckles (50) being made of L-shaped angle steel and having a U-shaped groove on the bottom surface; the L-shaped buckles (50) are detachably mounted on the bottom of the upper support plate (33) via tension bolts (51), and the top of the side of the L-shaped buckle (50) is supported on the bottom of the boot cap buckle cover (30), so that the upper support plate (33) and the boot cap buckle cover (30) are in a maximum spacing state.

5. The fixing device for assisting the construction of parallel three-dimensional seismic isolation system according to claim 4 is characterized in that: The selection of the tensile bolt (51) is based on: ， and , In the formula, f 1 is the designed tensile bearing capacity of the tensile bolt (51); G is the concrete bulk density; h 1 is the height of the beam (700); b 1 is the beam width (700); L 1 is the span of the beam (700); h 2 is the floor thickness of the superstructure; b 2 is the floor width of the superstructure; L 2 is the floor span of the superstructure; n is the number of L-shaped buckles; F 2 is the load of a single construction worker; D 1 is the straight-line distance between the construction worker's standing position and the lead core axis; D 2 is the straight-line distance between the axis of the tension bolt (51) and the axis of the lead core; N The maximum number of construction workers who can stand.

6. The fixing device for auxiliary parallel three-dimensional seismic isolation system construction according to claim 2 is characterized in that: The sliding spring vibration isolation support (4) comprises a spring seat (40), a sliding table (42) and a mirror sliding plate (43); the spring seat (40) is mounted on the lower foundation (2); a sliding table (42) is arranged on the spring seat (40); the mirror sliding plate (43) is fixedly mounted on the bottom of the keel frame (70); the sliding table (42) and the mirror sliding plate (43) are in close contact and sliding contact with each other.

7. The fixing device for assisting the construction of a parallel three-dimensional seismic isolation system according to claim 6 is characterized in that: The spring seat (40) comprises a plurality of springs (400), an elastic shell (401), a plurality of pull rods (402), an upper stiffening plate (403) and a lower stiffening plate (404); the upper stiffening plate (403) is mounted on the lower foundation (2); a plurality of springs (400) are connected between the middle of the upper stiffening plate (403) and the lower stiffening plate (404); the upper stiffening plate (403) and the lower stiffening plate (404) are connected to each other in a limited position by a plurality of pull rods (402) at their peripheries; ) and the lower stiffening plate (404), and an elastic shell (401) is arranged around the outer periphery of the plurality of tie rods (402), both ends of the tie rods (402) are provided with threaded sections, one end of the tie rod (402) is threadedly connected to the threaded hole of the lower stiffening plate (404), and the other end of the tie rod (402) passes through the through hole of the upper stiffening plate (403) and is threadedly connected to a nut (405), and a gasket is arranged between the nut (405) and the upper stiffening plate (403).

8. The fixing device for auxiliary parallel three-dimensional seismic isolation system construction according to claim 7 is characterized in that: The second temporary fixed support (6) is arranged between the upper stiffening plate (403) and the mirror sliding plate (43); the second temporary fixed support (6) comprises a plurality of oblique support rods (60), two connecting blocks (61) are arranged in parallel at both ends of the oblique support rods (60), and the upper ends of the oblique support rods (60) are detachably mounted on the mirror sliding plate (43) and the lower ends are detachably mounted on the upper stiffening plate (403) by means of fixing bolts (62) at the connecting blocks (61).

9. The fixing device for assisting the construction of a parallel three-dimensional seismic isolation system according to claim 8 is characterized in that: The fixing bolt (62) is selected based on: ， In the formula, f 2 is the designed tensile bearing capacity of the fixing bolt (62); F 2 is the load of a single construction worker; N The maximum number of construction workers who can stand; U 1 is the distance between the fixing bolt (62) installed at the upper end of the inclined support rod and the torque balance point (63); U 2 is the distance between the fixing bolt (62) installed at the lower end of the oblique support rod and the torque balance point (63); the torque balance point (63) is the midpoint of the connection between the lower end of the oblique support rod (60) and the connecting block (61), and this point is in direct contact with the upper stiffening plate (403).

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