CN112326171A - High-rise and super high-rise building non-structural test platform and test method - Google Patents
High-rise and super high-rise building non-structural test platform and test method Download PDFInfo
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- CN112326171A CN112326171A CN202011324059.8A CN202011324059A CN112326171A CN 112326171 A CN112326171 A CN 112326171A CN 202011324059 A CN202011324059 A CN 202011324059A CN 112326171 A CN112326171 A CN 112326171A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/025—Measuring arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/027—Specimen mounting arrangements, e.g. table head adapters
Abstract
The invention provides a high-rise and super high-rise building non-structural test platform and a test method, which are used for simulating the coupling reaction of non-structural components and indoor articles in adjacent floors of a high-rise and super high-rise building to the action of an earthquake and simulating the interlayer displacement and floor acceleration coupling reaction of full-length rooms in an actual building to different earthquakes through the rigidity of a specific support and the mass distribution of a frame. The invention has the advantages that: firstly, synchronous control of the displacement angle between the simulated room layers and the floor acceleration can be realized only by applying single excitation; the test can be carried out on various non-structural components and indoor articles in high-rise and super high-rise buildings, the installation or combination mode of the components can be changed, and the interaction between the components can be tested; thirdly, the earthquake reaction of non-structural components and indoor articles in high-rise and super high-rise buildings adopting different seismic reduction and isolation technologies can be simulated; can be repeatedly used, is convenient to disassemble, transport and install, and greatly reduces the test cost.
Description
Technical Field
The invention relates to the technical field of earthquake-resistant research of non-structural members and indoor articles, in particular to a non-structural test platform and a test method for simulating coupling reaction of the non-structural members and the indoor articles in adjacent floors of high-rise and super high-rise buildings to earthquake action.
Background
China is located between two earthquake zones in the world, namely the Pacific earthquake zone and the Eurasia earthquake zone, and is a country with multiple earthquakes. On the basis of continuously summarizing the experience and the training of the earthquake damage of the past, the earthquake design method and the relevant specifications are gradually developed and perfected. However, when a city encounters a severe earthquake, even if the collapse of the building can be prevented, if the damage of various non-structural members (such as suspended ceilings, partition walls, pipelines) and various indoor objects in the building can not be effectively controlled, huge property loss is still caused. According to a foreign research, the investment proportion of non-structural components and indoor articles in public buildings is higher than that of structural components. How to reduce the damage of earthquake action to non-structural components and indoor articles in buildings, especially high-rise and super high-rise buildings is a problem to be solved urgently in the development of shock absorption technology in China.
The earthquake simulation shaking table test is an optimal method for simulating earthquake dynamic force, but is limited by loading capacity, and can not carry out full-scale high-rise and super high-rise structure tests, and the scale model test can cause result distortion due to the size effect, so that the problem is a great problem in the earthquake force test of high-rise and super high-rise buildings. In recent years, east et al (1) Ji X, Kajiwara K, Nagae T, Enokita R, Nakashima M.A substructure vibration table test for reproduction of elevation stresses, 2009,38(12):1381-1399. [ 2 ] Ji X, Fenves G L, Kajiwara K, Nakashima M.Seismic data detection of a full-scale vibration table test structure, journal of Structural Engineering (ASCE), developed in the drawings and described in the patent text 2011, show the apparatus and methods for testing advanced structures as shown in the attached drawings, 1. The substructure testing device and the testing method have three innovations, namely, a substructure technology is introduced into a vibration table test, and a part of floors are cut out to be loaded as a substructure; secondly, the invention provides a rubber-damping-mass system to replace other floors; and thirdly, an advanced IDCS control algorithm is developed to generate an input wave of the vibration table, so that the test substructure is ensured to truly reproduce the dynamic behavior of the test substructure in the prototype structure.
The high-rise substructure vibration table test method is applied to the largest earthquake simulation vibration table E-Defense in the world and is used for simulating the structural earthquake destructive behavior of the bottom floor of a high-rise steel frame structure and the dynamic behavior of non-structural components in the top floor. By adopting the test method, the dynamic response simulation of the high-rise building full-scale model with large displacement (plus or minus 1.5m grade), large speed (plus or minus 2.5m/s grade) and long-time holding (300s grade) is successfully realized.
The method is the most effective test method for investigating the reaction of the non-structural members and the indoor articles in the building to the action of earthquake. The key challenge is how to ensure that both the floor acceleration and the interlayer displacement of the substructure can truly reproduce the dynamic response of the prototype structure. In the existing top floor substructure test (fig. 1a in the specification), only the reproduction of the floor acceleration is taken as a target, and the bottom floor substructure test (fig. 1b) only takes the reproduction of the interlayer displacement as a target. The invention provides a non-structural test platform and a test method for high-rise and super high-rise buildings, which can realize multi-parameter synchronous control on interlayer displacement and floor acceleration of adjacent floors.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a non-structural test platform and a test method for high-rise and super-high-rise buildings, which are used for simulating the coupling reaction of non-structural components and indoor articles in adjacent floors of the high-rise and super-high-rise buildings to the action of earthquake.
The technical scheme of the invention is as follows:
a high-rise and super high-rise building non-structural test platform, the structure of the test platform comprises: the floor-type room comprises a first-layer steel frame 1, a room floor 2, a middle laminated rubber support 3, a second-layer steel frame 4, a top friction pendulum support 11, a third-layer steel frame 7 and a bottom friction pendulum support 10; the first-layer steel frame 1 and the second-layer steel frame 4 are connected through a plurality of middle laminated rubber supports 3, the two-layer steel frame 4 and the three-layer steel frame 7 are connected through a plurality of top friction pendulum supports 11, the room floor 2 is arranged in the one-layer steel frame 1, the bottom friction pendulum supports 10 are uniformly arranged at the bottom of the steel frame layer 1, the bottom friction pendulum supports 10 are connected with a vibration table or other loading devices through high-strength bolts, the vibration table, the bottom friction pendulum supports 10 and the steel frame layer 1 simulate the earthquake reaction of a floor slab and a lower structure of a room, wherein, the bottom friction pendulum support 10 can complement the maximum stroke of the vibrating table, amplify the earthquake displacement reaction of the lower structure, the middle laminated rubber support 3 simulates deformation of a floor where a room is located, and the three-layer steel frame 7 and the top friction pendulum support 11 simulate the influence of an upper structure of the room on the earthquake reaction of the room.
Preferably, the inter-floor displacement angle and the floor absolute acceleration can be the same as the seismic response of the room in the actual building under a given loading mode by adjusting the mass of the one, two and three-layer steel frames 1, 4, 7 and the rigidity of the middle laminated rubber support 3, the top friction pendulum support 11 and the bottom friction pendulum support 10.
Preferably, when the rigidity of the bottom friction pendulum support 10 and the top friction pendulum support 11 does not meet the test requirement or needs a small range of adjustment of the rigidity, a lower spring system 9 and an upper spring system 6 can be additionally arranged in the building non-structural test platform, and the springs in the lower spring system 9 and the upper spring system 6 are arranged in parallel.
Preferably, the bottom friction pendulum support 10 is a light-weight large-stroke friction pendulum support, and the light-weight large-stroke friction pendulum support includes: an upper seat plate connecting piece 18, a spherical crown body 19, a lower seat plate 20 and a ribbed plate 21; the spherical crown body 19 is connected with an upper seat plate connecting piece 18 and a lower seat plate 20, the ribbed plate 21 is arranged on the lower seat plate 20, and the lower seat plate 20 is of a hollow ribbed structure.
Preferably, the structure of said lower spring system 9 and/or upper spring system 6 comprises: the device comprises a lower structure 12, a lower structure connecting piece 13, a plurality of extension springs 14, an upper structure connecting piece 15, a spring adjusting pull rod 16 and an upper structure 17, wherein the extension springs 14 are arranged in parallel, the upper ends of the extension springs 14 are connected with the upper structure 17 through the spring adjusting pull rod 16 and the connecting piece 15, and the lower ends of the extension springs 14 are connected with the lower structure 12 through the connecting piece 13.
Preferably, the initial tension at both ends of the extension spring 14 is applied and balanced by the spring adjusting tension rod 16 during installation, and when the upper structure 17 and the lower structure 17 are relatively displaced, the balance of the tension of the extension spring 14 is broken, so as to generate restoring force, thereby providing stable layer rigidity; the spring system can be installed at the edge of the floor, symmetrically arranged and arranged at the center of the floor when the space is insufficient.
A method for simulating dynamic reaction of non-structural components and indoor articles in prototype high-rise and super high-rise buildings by using the non-structural test platform of the high-rise and super high-rise buildings comprises the following specific steps:
(1) establishing a numerical model of a high-rise and super high-rise building structure, calculating to obtain floor reaction of the high-rise and super high-rise building structure under the action of given earthquake motion, and selecting the floor reaction of the floor and the top plate of the concerned floor and the floor interlayer displacement as targets for test input control of the vibration table;
(2) simulating the dynamic characteristics of the first 2-order mode of a prototype high-rise and super high-rise building by using a friction pendulum support-spring-mass three-layer power system formed by the non-structural test platform of the high-rise and super high-rise building;
(3) and generating an input time course required by the table top of the vibration table according to the dynamic characteristics of the test platform, so that the acceleration time course of the floor and the top plate of the room and the interlayer displacement time course between the two are consistent with an input target obtained through the seismic response analysis of the prototype structure.
(4) Taking the test platform as a loading platform, establishing a physical model for a certain full-scale room supposed to be located on the floor, and placing the physical model on a seismic simulation vibration table;
(5) the vibration table is utilized to apply single excitation to the bottom of the test platform, so that the full-scale room physical model installed on the test platform is subjected to the coupling action of the interlayer displacement angle and the floor acceleration, and the coupling reaction of non-structural components and indoor articles in the test room to the earthquake action is tested.
Compared with the prior art, the non-structural test platform and the test method for the high-rise and super high-rise buildings can simulate interlayer displacement and floor acceleration coupling reaction of full-scale rooms in actual buildings to different earthquake actions through specific support rigidity and frame mass distribution. Compared with the traditional vibrating table test method, the building non-structural reaction test platform has the advantages that:
the test is based on passive control, and synchronous control of the interlayer displacement angle and the floor acceleration of a simulated room can be realized only by applying single excitation to the bottom of the test platform.
The test platform can test various non-structural components and indoor articles in high-rise and super high-rise buildings, such as suspended ceilings, partition walls, water pipes, floors, furniture, medical equipment and the like, the installation or combination mode of the components can be changed during the test, and the interaction between different types of non-structural components and indoor articles can be tested.
And thirdly, by changing the rigidity and the floor mass distribution of the support in the test platform, the earthquake reaction of the non-structural components and the indoor articles in the rooms of the adjacent floors in the high-rise and super high-rise buildings can be simulated, and the earthquake reaction of the non-structural components and the indoor articles in the buildings adopting different seismic reduction and isolation technologies can also be simulated.
The non-structural reaction test platform can be repeatedly used, is convenient to disassemble, transport and install, and greatly reduces the test cost.
Drawings
Fig. 1(a) is a schematic diagram of a prior art vibration table test device for a substructure of a top floor of a high-rise building.
FIG. 1(b) is a schematic diagram of a vibration table testing device for a substructure of a bottom floor of a high-rise building in the prior art.
FIG. 2 is a schematic view of a non-structural test platform of a high-rise and super high-rise building.
FIG. 3 is an elevation view of a non-structural test platform for high-rise and super high-rise buildings.
Fig. 4 is a schematic view of a spring system.
FIG. 5 is a cross-sectional view of a lightweight large stroke friction pendulum support.
FIG. 6 is a plan view of a lightweight large stroke friction pendulum support.
FIG. 7 is a schematic diagram of a method for simulating the dynamic response of an unstructured member in a prototype high-rise, super high-rise building using the non-structural test platform for high-rise, super high-rise buildings of the present invention.
Description of reference numerals: 1. a layer of steel frame; 2. a room floor; 3. a middle laminated rubber support; 4. a two-layer steel frame; 6. an upper spring system; 7, three layers of steel frames; 9. a lower spring system; 10. a bottom friction pendulum support; 11. a top friction pendulum support; 12. a lower structure; 13 a lower structural connection; 14. an extension spring; 15. a superstructure attachment; 16. a spring adjusting pull rod; 17. a superstructure; 18. an upper deck connection; 19 a spherical crown body; 20. a lower seat plate; 21. a rib plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A three-layer steel frame structure test platform is adopted to simulate a certain full-scale room on a certain floor in a high-rise building and a super high-rise building. The reaction of rooms on different floors in high-rise and super high-rise buildings to the earthquake action, such as the displacement angle between floors, acceleration, speed and the like, is simulated by adjusting the mass distribution of each floor and the rigidity of each floor. By arranging the non-structural members and the indoor articles in the room, the reaction of the non-structural members and the indoor articles to the action of the earthquake can be observed.
The composition schematic diagram and the elevation view of the frame are respectively shown in the attached figures 2-6 of the specification.
As shown in fig. 2-3, a high-rise and super high-rise building non-structural test platform comprises: the floor-type room comprises a first-layer steel frame 1, a room floor 2, a middle laminated rubber support 3, a second-layer steel frame 4, a top friction pendulum support 11, a third-layer steel frame 7 and a bottom friction pendulum support 10; the first-layer steel frame 1 and the second-layer steel frame 4 are connected through a plurality of middle laminated rubber supports 3, the two-layer steel frame 4 and the three-layer steel frame 7 are connected through a plurality of top friction pendulum supports 11, the room floor 2 is arranged in the one-layer steel frame 1, the bottom friction pendulum supports 10 are uniformly arranged at the bottom of the steel frame layer 1, the bottom friction pendulum supports 10 are connected with a vibration table or other loading devices through high-strength bolts, the vibration table, the bottom friction pendulum supports 10 and the steel frame layer 1 simulate the reaction of a floor slab and a lower structure of a room, wherein, the bottom friction pendulum support 10 can complement the maximum stroke of the vibration table, amplify the lower structure reaction, the middle laminated rubber support 3 simulates deformation of a floor where a room is located, and the three-layer steel frame 7 and the top friction pendulum support 11 simulate the influence of an upper structure of the room on the earthquake reaction of the room.
By adjusting the mass of the first, second and third steel frames 1, 4, 7 and the rigidity of the middle laminated rubber support 3, the top friction pendulum support 11 and the bottom friction pendulum support 10, the inter-room displacement angle and the floor absolute acceleration can be the same as the earthquake response of the room in the actual building in a given loading mode.
When the rigidity of the bottom friction pendulum support 10 and the top friction pendulum support 11 does not meet the test requirement or the rigidity needs to be adjusted in a small range, a lower spring system 9 and an upper spring system 6 can be additionally arranged in the high-rise and super high-rise building non-structural test platform, and all springs in the lower spring system 9 and the upper spring system 6 are arranged in parallel.
As shown in fig. 4, the structure of the lower spring system 9 and/or the upper spring system 6 comprises: the device comprises a lower structure 12, a lower structure connecting piece 13, a plurality of extension springs 14, an upper structure connecting piece 15, a spring adjusting pull rod 16 and an upper structure 17, wherein the extension springs 14 are arranged in parallel, the upper ends of the extension springs 14 are connected with the upper structure 17 through the spring adjusting pull rod 16 and the connecting piece 15, and the lower ends of the extension springs 14 are connected with the lower structure 12 through the connecting piece 13.
When the device is installed, the initial tension at both ends of the extension spring 14 is applied and balanced through the spring adjusting pull rod 16, and when the upper structure 17 and the lower structure 17 are relatively displaced, the balance of the tension of the extension spring 14 is broken, so that a restoring force is generated, and stable layer rigidity is provided. The spring system can be installed at the edge of the floor, symmetrically arranged and arranged at the center of the floor when the space is insufficient.
As shown in fig. 5-6, when the non-structural test platform of the high-rise or super high-rise building adopts a large-stroke friction pendulum support, the conventional friction pendulum support has a large mass due to process limitation, and the whole weight of the test platform exceeds the limit value of the vibration table. The bottom friction pendulum support 10 in the present invention is a light large-stroke friction pendulum support, and the light large-stroke friction pendulum support includes: an upper seat plate connecting piece 18, a spherical crown body 19, a lower seat plate 20 and a ribbed plate 21; the spherical crown body 19 is connected with the upper seat plate connecting piece 18 and the lower seat plate 20, the rib plate 21 is arranged on the lower seat plate 20, the lower seat plate 20 is of a hollow ribbed structure, and the upper load of the friction pendulum support in the test is small, so that the lower seat plate 20 of the hollow ribbed structure cannot influence the use of the friction pendulum support, and meanwhile, the influence of the dead weight of the friction pendulum support on the test can be reduced to a great extent.
The invention relates to a method for simulating dynamic response of a non-structural component in a prototype high-rise and super high-rise building by using a high-rise and super high-rise building non-structural test platform.
The method for simulating the dynamic response of the non-structural member in the prototype high-rise and super high-rise building by using the non-structural test platform of the invention is described by taking the coupled shear wall high-rise building shown on the left side of the attached figure 7 as an example, and comprises the following specific steps:
(1) establishing a numerical model of a high-rise and super high-rise building structure as shown in the left graph of the attached figure 7, calculating to obtain the floor reaction of the high-rise and super high-rise building structure under the action of given earthquake motion, and selecting the floor reaction of the floor and the top plate of the concerned floor and the floor interlayer displacement as the target of the test input control of the vibration table;
(2) simulating the dynamic characteristics of the first 2-order mode of a prototype high-rise and super high-rise building by using a friction pendulum support-spring-mass three-layer power system formed by a non-structural test platform of the high-rise and super high-rise building as shown in the right diagram of the attached figure 7;
(3) and generating an input time course required by the table top of the vibration table according to the dynamic characteristics of the test platform, so that the acceleration time course of the floor and the top plate of the room and the interlayer displacement time course between the two are consistent with an input target obtained through the seismic response analysis of the prototype structure.
(4) Taking the test platform as a loading platform, establishing a physical model for a certain full-scale room supposed to be located on the floor, and placing the physical model on a seismic simulation vibration table;
(5) the vibration table is utilized to apply single excitation to the bottom of the test platform, so that the full-scale room physical model installed on the test platform is subjected to the coupling action of the interlayer displacement angle and the floor acceleration, and the coupling reaction of non-structural components and indoor articles in the test room to the earthquake action is tested.
Compared with the prior art, the non-structural test platform and the test method for the high-rise and super high-rise buildings can simulate interlayer displacement and floor acceleration coupling reaction of full-scale rooms in actual buildings to different earthquakes through specific support rigidity and frame mass distribution. Compared with the traditional vibrating table test method, the building non-structural reaction test platform has the advantages that:
the test is based on passive control, and synchronous control of the interlayer displacement angle and the floor acceleration of a simulated room can be realized only by applying single excitation to the bottom of the test platform.
The test platform can test various non-structural components and indoor articles in high-rise and super high-rise buildings, such as suspended ceilings, partition walls, water pipes, floors, furniture, medical equipment and the like, the installation or combination mode of the components can be changed during the test, and the interaction between different types of non-structural components and indoor articles can be tested.
And thirdly, by changing the rigidity and the floor mass distribution of the support in the test platform, the earthquake reaction of the non-structural components and the indoor articles in the rooms of the adjacent floors in the high-rise and super high-rise buildings can be simulated, and the earthquake reaction of the non-structural components and the indoor articles in the buildings adopting different seismic reduction and isolation technologies can also be simulated.
The non-structural reaction test platform can be repeatedly used, is convenient to disassemble, transport and install, and greatly reduces the test cost.
The above-described embodiments are merely preferred embodiments of the present invention, which is not intended to limit the present invention in any way. Those skilled in the art can make many changes, modifications, and equivalents to the embodiments of the invention without departing from the scope of the invention as set forth in the claims below. Therefore, equivalent variations made according to the idea of the present invention should be covered within the protection scope of the present invention without departing from the contents of the technical solution of the present invention.
Claims (7)
1. The utility model provides a high-rise, super high-rise building non-structural test platform which characterized in that, test platform's structure includes: the floor structure comprises a first-layer steel frame (1), a room floor (2), a middle laminated rubber support (3), a second-layer steel frame (4), a top friction pendulum support (11), a third-layer steel frame (7) and a bottom friction pendulum support (10); the floor system is characterized in that the first-layer steel frame (1) is connected with the second-layer steel frame (4) through a plurality of middle laminated rubber supports (3), the second-layer steel frame (4) is connected with the third-layer steel frame (7) through a plurality of top friction pendulum supports (11), the room floor (2) is arranged in the first-layer steel frame (1), the bottom friction pendulum supports (10) are uniformly arranged at the bottom of the first-layer steel frame (1), the bottom friction pendulum supports (10) are connected with a vibrating table or other loading devices through high-strength bolts, the vibrating table, the bottom friction pendulum supports (10) and the first-layer steel frame (1) simulate the earthquake reaction of a floor slab and a substructure where a room is located, wherein the bottom friction pendulum supports (10) can complement the maximum stroke of the vibrating table, amplify the earthquake displacement reaction of the substructure, and the middle laminated rubber supports (3) simulate the deformation of the floor where the room is located, the three-layer steel frame (7) and the top friction pendulum support (11) simulate the influence of the upper structure of the room on the earthquake reaction of the room.
2. The non-structural test platform for high-rise and super-high-rise buildings according to claim 1, characterized in that the inter-room displacement angle and the floor absolute acceleration are the same as the earthquake response of the room in the actual building under a given loading mode by adjusting the mass of the steel frames (1, 4, 7) of the first, second and third layers and the rigidity of the middle laminated rubber support (3), the top friction pendulum support (11) and the bottom friction pendulum support (10).
3. The high-rise and super-high-rise building unstructured test platform is characterized in that when the rigidity of the bottom friction pendulum support (10) and the top friction pendulum support (11) does not meet the test requirement or needs to be adjusted in a small range, a lower spring system (9) and an upper spring system (6) can be additionally arranged in the building unstructured test platform, and the springs in the lower spring system (9) and the upper spring system (6) are arranged in parallel.
4. The high-rise and super-high-rise building non-structural test platform according to any one of claims 1 to 3, wherein the bottom friction pendulum support (10) is a light-weight large-stroke friction pendulum support, and the light-weight large-stroke friction pendulum support comprises: the upper seat plate connecting piece (18), the spherical crown body (19), the lower seat plate (20) and the ribbed plate (21); the spherical crown body (19) is connected with an upper seat plate connecting piece (18) and a lower seat plate (20), the ribbed plate (21) is arranged on the lower seat plate (20), and the lower seat plate (20) is of a hollow ribbed structure.
5. A high-rise, super high-rise building non-structural test platform according to claim 3, characterized in that the structure of the lower spring system (9) and/or the upper spring system (6) comprises: the spring adjusting device comprises a lower structure (12), a lower structure connecting piece (13), an extension spring (14), an upper structure connecting piece (15), a spring adjusting pull rod (16) and an upper structure (17), wherein the extension springs (14) are arranged in parallel, the upper ends of the extension springs (14) are connected with the upper structure (17) through the spring adjusting pull rod (16) and the connecting piece (15), and the lower ends of the extension springs (14) are connected with the lower structure (12) through the connecting piece (13).
6. The high-rise and super high-rise building non-structural test platform according to claim 5, wherein the initial tension of both ends of the extension spring (14) is applied and balanced through the spring adjusting pull rod (16) during installation, and when the upper structure (17) and the lower structure (17) are relatively displaced, the balance of the tension of the extension spring (14) is broken to generate restoring force, so that stable layer rigidity is provided; the spring system can be installed at the edge of the floor, symmetrically arranged and arranged at the center of the floor when the space is insufficient.
7. A method for simulating the dynamic reaction of an unstructured member in a prototype high-rise and super high-rise building by using the high-rise and super high-rise building unstructured test platform of any one of claims 1 to 6, which comprises the following specific steps:
(1) establishing a numerical model of a high-rise and super high-rise building structure, calculating to obtain floor reaction of the high-rise and super high-rise building structure under the action of given earthquake motion, and selecting the floor reaction of the floor and the top plate of the concerned floor and the floor interlayer displacement as targets for test input control of the vibration table;
(2) simulating the dynamic characteristics of the first 2-order mode of a prototype high-rise and super high-rise building by using a friction pendulum support-spring-mass three-layer power system formed by the non-structural test platform of the high-rise and super high-rise building;
(3) and generating an input time course required by the table top of the vibration table according to the dynamic characteristics of the test platform, so that the acceleration time course of the floor and the top plate of the room and the interlayer displacement time course between the two are consistent with an input target obtained through the seismic response analysis of the prototype structure.
(4) Taking the test platform as a loading platform, establishing a physical model for a certain full-scale room supposed to be located on the floor, and placing the physical model on a seismic simulation vibration table;
(5) the vibration table is utilized to apply single excitation to the bottom of the test platform, so that the full-scale room physical model installed on the test platform is subjected to the coupling action of the interlayer displacement angle and the floor acceleration, and the coupling reaction of non-structural components and indoor articles in the test room to the earthquake action is tested.
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| PCT/CN2021/127740 WO2022111217A1 (en) | 2020-11-24 | 2021-10-29 | Non-structural test platform and method for high-rise and super high-rise buildings |
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| WO2022111217A1 (en) * | 2020-11-24 | 2022-06-02 | 中国地震局工程力学研究所 | Non-structural test platform and method for high-rise and super high-rise buildings |
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| WO2022111217A1 (en) * | 2020-11-24 | 2022-06-02 | 中国地震局工程力学研究所 | Non-structural test platform and method for high-rise and super high-rise buildings |
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