CN114293676B - Prefabricated assembled energy dissipation and shock absorption shear wall structure and design method thereof - Google Patents
Prefabricated assembled energy dissipation and shock absorption shear wall structure and design method thereof Download PDFInfo
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Abstract
The invention discloses a prefabricated energy dissipation and shock absorption shear wall structure and a design method thereof, the prefabricated energy dissipation and shock absorption shear wall structure comprises an assembly module and a data management module, wherein the assembly module is used for providing two structural forms for arranging energy dissipation and shock absorption devices, specifically, the horizontal directions of adjacent prefabricated wall limbs are connected through annular metal energy dissipation members, and a beam connecting damper is arranged in the middle of a beam connecting part of a prefabricated beam connecting shear wall.
Description
Technical Field
The invention relates to the technical field of energy dissipation and shock absorption shear wall structure design, in particular to a prefabricated energy dissipation and shock absorption shear wall structure and a design method thereof.
Background
The industrialization of the assembled building is a worldwide trend and trend, and is also an urgent need for green development and structure transformation development in China, and the existing energy dissipation and vibration reduction damper has been completely proved to have obvious energy dissipation and vibration reduction capability, and can obviously reduce the damage and destruction of the structure in strong earthquake;
the method is characterized in that the conventional engineering structure in the high-intensity earthquake area faces serious earthquake and super typhoon disaster threats, the assembled engineering structure is seriously damaged when the conventional assembled shear wall faces the serious earthquake and super typhoon disaster threats, and the assembled prefabricated shear wall which is partially added with the energy dissipation damping device and reasonably designed is less damaged when the assembled prefabricated shear wall faces the serious earthquake and super typhoon disaster threats, wherein if a certain number of dampers are not arranged in the structure, the earthquake resistance of the structure cannot be effectively improved, such as a cast-in-place prefabricated shear wall is not improved, the earthquake resistance of the prefabricated shear wall cannot exceed that of the conventional cast-in-place shear wall structure even if the joints are not obviously damaged, and the serious damage is still generated under strong earthquake, so that the design of the prefabricated assembled energy dissipation damping wall structure for improving the ductility of the shear wall and the earthquake resistance of the shear wall and the design method thereof are necessary.
Disclosure of Invention
The invention aims to provide a prefabricated energy dissipation and shock absorption shear wall structure and a design method thereof, which are used for solving the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a prefabricated assembled energy dissipation shock attenuation shear force wall structure and design method thereof, includes assembly module and data management module, its characterized in that: the assembly module is used for providing two construction forms provided with energy dissipation and shock absorption devices, specifically, the two construction forms are that adjacent prefabricated wall limbs are horizontally connected through annular metal energy dissipation members, and a connecting beam damper is arranged in the middle of a connecting beam of the prefabricated connecting-limb shear wall, and the two construction forms can be used singly or jointly.
According to the technical scheme, the data management module comprises an annular metal energy dissipation part optimizing module, a connecting beam damper optimizing module, an optimizing system module and a research and development module, wherein the annular metal energy dissipation part optimizing module is used for optimizing the annular metal energy dissipation part, the connecting beam damper optimizing module is used for optimizing the connecting beam damper, the optimizing system module is used for optimizing a novel prefabricated assembly type shear wall structure system for installing the annular metal energy dissipation part and the connecting beam damper, and the research and development module is used for researching the novel prefabricated assembly type shear wall for installing the annular metal energy dissipation part and the novel prefabricated assembly type shear wall with the connecting beam damper.
According to the technical scheme, the metal energy dissipation part optimizing module comprises a bending deformation unit and a splitting unit, the bending deformation unit is used for changing the deformation mode of the metal energy dissipation part, the splitting unit is used for splitting the wall, the metal energy dissipation part optimizing module is based on the design idea that the shear wall can obviously improve the ductility of the metal energy dissipation part along the vertical slotting, the annular metal energy dissipation part is installed between the adjacent prefabricated wall along a certain vertical distance through the assembling module, the wall with smaller height and width is split into two wall with larger height and width through the splitting unit, meanwhile, the bending deformation unit is used for changing the deformation mode of the wall into bending deformation, so that the ductility of the wall is improved, the adjacent wall generates bending deformation to drive the annular metal energy dissipation part to generate vertical dislocation deformation yield energy consumption, the energy consumption performance of the whole structure is further enhanced, the annular metal energy dissipation part which is initially researched and developed is optimized through the research and development module after the metal energy dissipation part is optimized, the mechanical property research and simulation analysis are performed on the annular metal energy dissipation part, the structural model is reasonably constructed, the structural style is reasonably, and the structural style is built.
According to the technical scheme, the optimized module of the continuous beam damper comprises a damage repair unit and a grading unit, the damage repair unit is used for repairing damaged parts of the continuous beam damper, the grading unit is used for grading the continuous beam damper, most of the continuous beam dampers at present do not have graded yield functions and cannot effectively respond to structural vibration caused by earthquakes with different intensities, the continuous beam damper is mounted in the middle of the continuous beam through an assembly module, the energy-dissipating type damper is graded through the grading unit, the energy-dissipating type damper is upgraded into a graded energy-dissipating type damper, the graded energy-dissipating type damper is primarily a metal and viscoelastic composite type damper, the metal part is kept elastic during small earthquake or strong wind, the viscoelastic part consumes energy together during medium earthquake or large earthquake, the anti-seismic performance of the assembled type continuous beam damper is effectively enhanced, the novel efficient assembled type vibration-absorbing continuous beam damper is formed, the damaged continuous beam damper is repaired through the replacement of the damage repair unit after strong earthquake, the optimized damping module is researched and developed, and the optimized damping is carried out on the optimized module after the continuous beam damper is optimized.
According to the technical scheme, the optimal system module comprises a connection anchoring unit and a strength matching unit, the connection anchoring unit is used for adopting reliable and convenient connection anchoring measures for the designed annular metal energy dissipation part, the connecting beam damper and the prefabricated shear wall limb, the force transmission path is clear, the cost is low, the disassembly and the replacement are easy, the energy dissipation performance of the novel prefabricated shear wall depends on the energy dissipation and shock absorption effects of the shear wall energy dissipation connecting part and the connecting beam damper, the energy dissipation and shock absorption parts have reasonable rigidity, bearing capacity and good energy dissipation capacity, the strength and the rigidity of the integral structure are well matched, and the strength matching unit is used for firstly starting energy dissipation to effectively protect other parts of the wall limb when in strong earthquake.
According to the technical scheme, the research and development module comprises a structure research and development unit, an experiment research unit, a numerical simulation unit and a theoretical analysis unit, wherein the structure research and development unit is used for primarily researching and developing a structure of the damping shear wall, the experiment research unit is used for testing the structure primarily researched and developed by the structure research and development unit, the numerical simulation unit is used for carrying out parameter analysis on the tested structure, and the theoretical analysis unit is used for carrying out engineering practical design on the structure through analysis results.
According to the technical scheme, the specific working steps of the research and development module are as follows:
step A1, a structure research and development unit primarily researches the structures of an annular metal energy dissipation part and a connecting beam damper, and assembles the annular metal energy dissipation part and the connecting beam damper through an assembly module, so as to develop an assembled energy dissipation and shock absorption shear wall;
step A2, performing a low-cycle repeated loading test on the annular energy dissipation part and the connecting beam damper by the experimental research unit, and performing a low-cycle repeated loading test on the assembled energy dissipation and shock absorption shear wall;
a3, establishing a finite element analysis model and a restoring force model for the annular energy dissipation part, the connecting beam damper and the assembled energy dissipation and shock absorption shear wall by the numerical simulation unit, and simultaneously analyzing and optimizing parameters;
and A4, analyzing an anti-seismic working mechanism, a damage evolution rule and residual deformation control of the annular energy dissipation part, the connecting beam damper and the assembled energy dissipation and shock absorption shear wall by a theoretical analysis unit, and designing a structure according to an analysis result and an engineering practical design method.
According to the technical scheme, the annular metal energy dissipation part optimizing module is used for researching and developing the annular metal energy dissipation part based on the research and development module, and comprises the following specific steps of:
step H1, the shape of the developed annular metal energy dissipation part is further optimized, so that the annular metal energy dissipation part can be conveniently used for connecting prefabricated shear wall limbs while the original excellent damping and energy consumption performance of the annular metal energy dissipation part is maintained;
and step H2, carrying out mechanical property test on the annular metal energy dissipation part with the optimized shape, and researching the influence of the rigidity, strength, energy consumption and degradation process, damage characteristics and load-displacement hysteresis rule of the test piece on the mechanical property of the test piece. And establishing a fine finite element calculation model, a simplified calculation model and a restoring force model of the annular metal energy dissipation component, and providing an engineering practical design method of the annular metal energy dissipation component.
According to the technical scheme, the optimization module of the continuous beam damper is used for researching and developing the continuous beam damper based on the research and development module, and comprises the following specific steps:
step L1, an earthquake-resistant graded energy dissipation damper based on preliminary research and development, namely a metal and viscoelastic composite damper, is improved and optimized, is reasonably designed and installed on a connecting beam, and is characterized in that the metal part keeps elasticity in small earthquake or strong wind, the viscoelastic part consumes energy, the two parts consume energy together in medium earthquake or large earthquake, and the damaged connecting beam damper is repaired or replaced through a damage repair unit after strong earthquake;
step L2, the influence of all parameters on the mechanical properties of the test piece is studied to be important, wherein the stiffness, the strength, the energy consumption and the degradation process, the damage characteristics and the load-displacement hysteresis rule of the test piece are studied;
and step L3, establishing a fine finite element calculation model of the novel high-performance continuous beam damper by utilizing the existing general finite element software, establishing a simplified calculation model which is convenient for engineering application on the basis of obtaining the stress characteristics of the novel high-performance continuous beam damper, and establishing a restoring force model considering the damage accumulation effect by experimental research on the earthquake resistance and damage degree evaluation indexes of the novel high-performance continuous beam damper.
According to the technical scheme, the research and development module is used for researching and developing the assembled energy dissipation and shock absorption shear wall based on the researched data, and the specific steps are as follows:
step S1, respectively and independently arranging the annular metal energy dissipation part, the connecting beam damper and the two dampers in the prefabricated reinforced concrete shear wall to form three different damping energy consumption prefabricated shear walls, and calculating the strength and rigidity requirements of the annular metal energy dissipation part, the connecting beam damper and each part of a non-replacement area according to the requirements of a plurality of defense lines, thereby determining the design parameters of each part of the shear wall;
s2, respectively carrying out mechanical property tests of the novel prefabricated shear wall model with the additional energy dissipation and shock absorption components under the action of horizontal lateral repeated load, before horizontal force is applied, firstly applying vertical uniform load on the top of the wall body, keeping unchanged in the tests, researching the whole damage process of the model, revealing the yield damage sequence and damage mechanism of each part, rigidity, strength and ductility, and the influence rule of each parameter on the mechanical property of the model, revealing the energy dissipation and shock absorption working mechanism of the model through test research, and obtaining the corresponding relation between various reaction amounts and each damage state through observing and tracking the whole progressive damage process of the model in the loading process, thereby providing a direct test basis for the division of the subsequent performance grades;
and S3, a calculation model of the energy dissipation and shock absorption component is applied, a numerical calculation model of the novel shear wall with different structures is established by combining with a calculation model of the wall limbs, parameter analysis which is wider than test parameters is carried out after calibration is obtained by using test results, and reasonable construction measures and practical engineering design methods of the novel shear wall are provided on the basis.
Compared with the prior art, the invention has the following beneficial effects: in the using process of the invention, the energy-saving type damper is subjected to graded energy dissipation, the metal part keeps elasticity in small earthquake or strong wind, the viscoelasticity part consumes energy, the metal part consumes energy together in medium earthquake or strong earthquake, the anti-seismic performance of the assembled shear wall is effectively enhanced, the damaged girder-connecting damper is repaired or replaced through the damage repairing unit after strong earthquake, the wall with smaller height and width is split into two wall limbs with larger height and width, the deformation mode is changed from shearing deformation to bending deformation, the ductility of the wall limbs can be improved, the adjacent wall limbs generate bending deformation to drive the annular metal energy dissipation part to generate vertical dislocation deformation yielding energy, and the energy consumption performance of the integral structure is further enhanced.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of the overall modular structure of the present invention;
FIG. 2 is a schematic diagram of the research steps of the present invention;
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the present invention provides the following technical solutions: the utility model provides a prefabricated assembled energy dissipation shock attenuation shear force wall structure and design method thereof, includes assembly module and data management module, its characterized in that: the assembly module is used for providing two construction forms for arranging the energy dissipation and shock absorption devices, specifically, the two adjacent prefabricated wall limbs are connected horizontally through annular metal energy dissipation members, and a connecting beam damper is arranged in the middle of a connecting beam of the prefabricated connecting beam shear wall, and the two forms can be used independently or used in combination;
the data management module comprises an annular metal energy dissipation part optimizing module, a beam connecting damper optimizing module, an optimizing system module and a research and development module, wherein the annular metal energy dissipation part is used for optimizing the annular metal energy dissipation part, the beam connecting damper optimizing module is used for optimizing the beam connecting damper, the optimizing system module is used for optimizing a novel prefabricated assembly type shear wall structure system for installing the annular metal energy dissipation part and the beam connecting damper, and the research and development module is used for researching the novel prefabricated assembly type shear wall for installing the annular metal energy dissipation part and the novel prefabricated assembly type shear wall with the beam connecting damper;
the metal energy dissipation part optimizing module comprises a bending deformation unit and a splitting unit, wherein the bending deformation unit is used for changing the deformation mode of the metal energy dissipation part, the splitting unit is used for splitting the wall limbs, the metal energy dissipation part optimizing module is based on the design idea that the shear wall limbs can be obviously improved in ductility by vertically slotting, the annular metal energy dissipation part is installed between the adjacent prefabricated wall limbs horizontally at certain intervals by the assembling module, the wall limbs with smaller height and width are split into two wall limbs with larger height and width by the splitting unit, meanwhile, the bending deformation unit is used for changing the deformation mode of the wall limbs from shearing deformation to bending deformation, so that the ductility of the wall limbs is improved, the adjacent wall limbs generate bending deformation to drive the annular metal energy dissipation part to generate vertical dislocation deformation yielding energy consumption during strong earthquake, the energy consumption performance of the whole structure is further enhanced, after the metal energy dissipation part optimizing module optimizes the initially developed annular metal energy dissipation part by the developing module, the mechanical performance test research and simulation analysis are conducted, the energy dissipation work mechanism is revealed, and the restoring force is established, and the reasonable construction form and the design method are provided;
the girder connecting damper optimization module comprises a damage repair unit and a grading unit, wherein the damage repair unit is used for repairing damaged parts of girder connecting damper cables, the grading unit is used for grading girder connecting dampers, most girder connecting dampers at present do not have grading yielding functions and cannot effectively respond to structural vibration caused by earthquakes with different intensities, the girder connecting dampers are installed in the middle of the girder connecting damper through an assembly module, the girder connecting dampers are graded through the grading unit and upgraded into graded energy dissipation type dampers, the graded energy dissipation type dampers are primarily metal and viscoelastic composite type dampers, the metal parts keep elasticity during small earthquakes or strong winds, the viscoelastic parts consume energy together during medium earthquakes or strong earthquakes, the anti-seismic performance of the assembled girder connecting shear wall is effectively enhanced, the damaged girder connecting dampers are repaired or replaced through the damage repair unit after strong earthquakes, and the girder connecting damper optimization module is optimized through the research and development of the girder connecting damper optimization module;
the system module comprises a connecting and anchoring unit and a strength matching unit, wherein the connecting and anchoring unit is used for adopting reliable and convenient connecting and anchoring measures for the designed annular metal energy dissipation part, the connecting beam damper and the prefabricated shear wall limb, the force transmission path is clear, the cost is lower, the system module is easy to disassemble and replace, the energy consumption performance of the novel prefabricated shear wall depends on the energy dissipation and damping effects of the shear wall energy dissipation connecting part and the connecting beam damper, the energy dissipation and damping parts have reasonable rigidity, bearing capacity and good energy consumption capacity, the strength and rigidity of the whole structure are well matched, and the strength matching unit is used for matching the rigidity and the strength between the connecting beam damper and the prefabricated wall limb during strong earthquake, so that other parts of the wall limb are effectively protected;
the research and development module comprises a structure research and development unit, an experiment research unit, a numerical simulation unit and a theoretical analysis unit, wherein the structure research and development unit is used for primarily researching and developing a structure of the damping shear wall, the experiment research unit is used for testing the structure primarily researched and developed by the structure research and development unit, the numerical simulation unit is used for carrying out parameter analysis on the tested structure, and the theoretical analysis unit carries out engineering practical design on the structure through analysis results;
the specific working steps of the research and development module are as follows:
step A1, a structure research and development unit primarily researches the structures of an annular metal energy dissipation part and a connecting beam damper, and assembles the annular metal energy dissipation part and the connecting beam damper through an assembly module, so as to develop an assembled energy dissipation and shock absorption shear wall;
step A2, performing a low-cycle repeated loading test on the annular energy dissipation part and the connecting beam damper by the experimental research unit, and performing a low-cycle repeated loading test on the assembled energy dissipation and shock absorption shear wall;
a3, establishing a finite element analysis model and a restoring force model for the annular energy dissipation part, the connecting beam damper and the assembled energy dissipation and shock absorption shear wall by the numerical simulation unit, and simultaneously analyzing and optimizing parameters;
step A4, analyzing an anti-seismic working mechanism, a damage evolution rule and residual deformation control of the annular energy dissipation part, the connecting beam damper and the assembled energy dissipation and shock absorption shear wall by a theoretical analysis unit, and designing a structure according to an analysis result and an engineering practical design method;
the annular metal energy dissipation part optimizing module is used for researching and developing the annular metal energy dissipation part based on a research and development module, and comprises the following specific steps of:
step H1, the shape of the developed annular metal energy dissipation part is further optimized, so that the annular metal energy dissipation part can be conveniently used for connecting prefabricated shear wall limbs while the original excellent damping and energy consumption performance of the annular metal energy dissipation part is maintained;
and step H2, carrying out mechanical property test on the annular metal energy dissipation part with the optimized shape, and researching the influence of the rigidity, strength, energy consumption and degradation process, damage characteristics and load-displacement hysteresis rule of the test piece on the mechanical property of the test piece. Establishing a fine finite element calculation model, a simplified calculation model and a restoring force model of the annular metal energy dissipation component, and providing an engineering practical design method thereof;
the optimization module of the continuous beam damper is used for researching and developing the continuous beam damper based on a research and development module, and comprises the following specific steps:
step L1, an earthquake-resistant graded energy dissipation damper based on preliminary research and development, namely a metal and viscoelastic composite damper, is improved and optimized, is reasonably designed and installed on a connecting beam, and is characterized in that the metal part keeps elasticity in small earthquake or strong wind, the viscoelastic part consumes energy, the two parts consume energy together in medium earthquake or large earthquake, and the damaged connecting beam damper is repaired or replaced through a damage repair unit after strong earthquake;
step L2, the influence of all parameters on the mechanical properties of the test piece is studied to be important, wherein the stiffness, the strength, the energy consumption and the degradation process, the damage characteristics and the load-displacement hysteresis rule of the test piece are studied;
step L3, establishing a fine finite element calculation model of the novel high-performance continuous beam damper by utilizing the existing general finite element software, establishing a simplified calculation model which is convenient for engineering application on the basis of obtaining the stress characteristics of the novel high-performance continuous beam damper, and establishing a restoring force model which considers the damage accumulation effect by experimental research on the anti-seismic performance and damage degree evaluation indexes of the novel high-performance continuous beam damper;
the research and development module is used for researching and developing the assembled energy dissipation and shock absorption shear wall based on the researched data, and comprises the following specific steps:
step S1, respectively and independently arranging the annular metal energy dissipation part, the connecting beam damper and the two dampers in the prefabricated reinforced concrete shear wall to form three different damping energy consumption prefabricated shear walls, and calculating the strength and rigidity requirements of the annular metal energy dissipation part, the connecting beam damper and each part of a non-replacement area according to the requirements of a plurality of defense lines, thereby determining the design parameters of each part of the shear wall;
s2, respectively carrying out mechanical property tests of the novel prefabricated shear wall model with the additional energy dissipation and shock absorption components under the action of horizontal lateral repeated load, before horizontal force is applied, firstly applying vertical uniform load on the top of the wall body, keeping unchanged in the tests, researching the whole damage process of the model, revealing the yield damage sequence and damage mechanism of each part, rigidity, strength and ductility, and the influence rule of each parameter on the mechanical property of the model, revealing the energy dissipation and shock absorption working mechanism of the model through test research, and obtaining the corresponding relation between various reaction amounts and each damage state through observing and tracking the whole progressive damage process of the model in the loading process, thereby providing a direct test basis for the division of the subsequent performance grades;
and S3, a calculation model of the energy dissipation and shock absorption component is applied, a numerical calculation model of the novel shear wall with different structures is established by combining with a calculation model of the wall limbs, parameter analysis which is wider than test parameters is carried out after calibration is obtained by using test results, and reasonable construction measures and practical engineering design methods of the novel shear wall are provided on the basis.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The design method of the prefabricated energy dissipation and shock absorption shear wall structure comprises an assembly module and a data management module, and is characterized in that: the assembly module is used for providing two construction forms provided with energy dissipation and shock absorption devices, specifically, the two adjacent prefabricated wall limbs are horizontally connected through annular metal energy dissipation members, and a connecting beam damper is arranged in the middle of a connecting beam of the prefabricated connecting beam shear wall, and the two forms can be used independently or jointly;
the data management module comprises an annular metal energy dissipation part optimizing module, a beam connecting damper optimizing module, an optimizing system module and a research and development module, wherein the annular metal energy dissipation part optimizing module is used for optimizing the annular metal energy dissipation part, the beam connecting damper optimizing module is used for optimizing the beam connecting damper, the optimizing system module is used for optimizing a novel prefabricated assembly type shear wall structure system for installing the annular metal energy dissipation part and the beam connecting damper, and the research and development module is used for researching the novel prefabricated assembly type shear wall for installing the annular metal energy dissipation part and the novel prefabricated assembly type shear wall with the beam connecting damper;
the metal energy dissipation part optimizing module comprises a bending deformation unit and a splitting unit, wherein the bending deformation unit is used for changing the deformation mode of the metal energy dissipation part, the splitting unit is used for splitting the wall limbs, the metal energy dissipation part optimizing module is based on the design idea that the shear wall limbs can be obviously improved in ductility along the vertical slotting, the annular metal energy dissipation part is installed between the horizontally adjacent prefabricated wall limbs at certain intervals along the vertical direction through the assembling module, the wall limbs with smaller height and width are split into two wall limbs with larger height and width through the splitting unit, the deformation mode of the wall limbs is changed from shearing deformation to bending deformation to main through the bending deformation unit, so that the ductility of the wall limbs is improved, the annular metal energy dissipation part is driven by bending deformation during strong vibration to generate vertical dislocation deformation yield energy consumption, the energy consumption performance of the whole structure is further enhanced, after the metal energy dissipation part optimizing module optimizes the initially developed annular metal energy dissipation part through the developing module, the mechanical performance test and simulation analysis are carried out on the annular metal energy dissipation part, the mechanical performance test and the simulation analysis are revealed, the energy dissipation working mechanism is established, the damping capacity is restored to the damping capacity is reasonably designed and the structural model is provided;
the girder connecting damper optimization module comprises a damage repair unit and a grading unit, wherein the damage repair unit is used for repairing damaged parts of girder connecting damper cables, the grading unit is used for grading girder connecting dampers, most girder connecting dampers at present do not have a grading yield function and cannot effectively respond to structural vibration caused by earthquakes with different intensities, the girder connecting dampers are installed in the middle of the girder connecting damper through an assembly module, the girder connecting dampers are graded through the grading unit, the girder connecting dampers are upgraded into graded energy dissipation type dampers, the graded energy dissipation type dampers are primarily metal and viscoelastic composite type dampers, the metal parts keep elasticity in small earthquake or strong wind, the viscoelastic parts consume energy together in medium earthquake or large earthquake, the shock resistance of the assembled shear wall is effectively enhanced, the shock resistance of the assembled girder connecting damper is remarkably improved, the damaged girder connecting damper is repaired or replaced through the damage repair unit after the strong earthquake, the girder connecting damper optimization is researched and developed through the optimized girder connecting damper optimization module;
the optimized system module comprises a connection anchoring unit and a strength matching unit, wherein the connection anchoring unit is used for adopting reliable and convenient connection anchoring measures for the designed annular metal energy dissipation part, the connecting beam damper and the prefabricated shear wall limb, the force transmission path is clear, the cost is low, the disassembly and the replacement are easy, the energy consumption performance of the novel prefabricated shear wall depends on the energy dissipation and shock absorption effects of the shear wall energy dissipation connection part and the connecting beam damper, the energy dissipation and shock absorption parts have reasonable rigidity, bearing capacity and good energy consumption capability, the strength and the rigidity of the integral structure are well matched, and the strength matching unit is used for matching the rigidity and the strength between the connecting beam damper and the prefabricated wall limb during strong earthquake, and the energy consumption is started firstly, so that other parts of the wall limb are effectively protected;
the research and development module comprises a structure research and development unit, an experiment research unit, a numerical simulation unit and a theoretical analysis unit, wherein the structure research and development unit is used for primarily researching and developing a structure of the damping shear wall, the experiment research unit is used for testing the structure primarily researched and developed by the structure research and development unit, the numerical simulation unit is used for carrying out parameter analysis on the tested structure, and the theoretical analysis unit is used for carrying out engineering practical design on the structure through analysis results;
the specific working steps of the research and development module are as follows:
step A1, a structure research and development unit primarily researches the structures of an annular metal energy dissipation part and a connecting beam damper, and assembles the annular metal energy dissipation part and the connecting beam damper through an assembly module, so as to develop an assembled energy dissipation and shock absorption shear wall;
step A2, performing a low-cycle repeated loading test on the annular energy dissipation part and the connecting beam damper by the experimental research unit, and performing a low-cycle repeated loading test on the assembled energy dissipation and shock absorption shear wall;
a3, establishing a finite element analysis model and a restoring force model for the annular energy dissipation part, the connecting beam damper and the assembled energy dissipation and shock absorption shear wall by the numerical simulation unit, and simultaneously analyzing and optimizing parameters;
step A4, analyzing an anti-seismic working mechanism, a damage evolution rule and residual deformation control of the annular energy dissipation part, the connecting beam damper and the assembled energy dissipation and shock absorption shear wall by a theoretical analysis unit, and designing a structure according to an analysis result and an engineering practical design method;
the annular metal energy dissipation part optimizing module is used for researching and developing the annular metal energy dissipation part based on a research and development module, and comprises the following specific steps of:
step H1, the shape of the developed annular metal energy dissipation part is further optimized, so that the annular metal energy dissipation part can be conveniently used for connecting prefabricated shear wall limbs while the original excellent damping and energy consumption performance of the annular metal energy dissipation part is maintained;
step H2, carrying out a mechanical property test on the annular metal energy dissipation member with the optimized shape, and researching the influence of the rigidity, strength, energy consumption and degradation process, damage characteristics and load-displacement hysteresis rules of the test piece on the mechanical property of the test piece; establishing a fine finite element calculation model, a simplified calculation model and a restoring force model of the annular metal energy dissipation part, and providing an engineering practical design method thereof;
the optimization module of the continuous beam damper is used for researching and developing the continuous beam damper based on a research and development module, and comprises the following specific steps of:
step L1, an earthquake-resistant graded energy dissipation damper based on preliminary research and development, namely a metal and viscoelastic composite damper, is improved and optimized, is reasonably designed and installed on a connecting beam, and is characterized in that the metal part keeps elasticity in small earthquake or strong wind, the viscoelastic part consumes energy, the two parts consume energy together in medium earthquake or large earthquake, and the damaged connecting beam damper is repaired or replaced through a damage repair unit after strong earthquake;
step L2, the influence of all parameters on the mechanical properties of the test piece is studied to be important, wherein the stiffness, the strength, the energy consumption and the degradation process, the damage characteristics and the load-displacement hysteresis rule of the test piece are studied;
and step L3, establishing a fine finite element calculation model of the novel high-performance continuous beam damper by utilizing the existing general finite element software, establishing a simplified calculation model which is convenient for engineering application on the basis of obtaining the stress characteristics of the novel high-performance continuous beam damper, and establishing a restoring force model considering the damage accumulation effect by experimental research on the earthquake resistance and damage degree evaluation indexes of the novel high-performance continuous beam damper.
2. The method for designing the prefabricated energy dissipation and shock absorption shear wall structure according to claim 1, wherein the method comprises the following steps of: the research and development module is used for researching and developing the assembled energy dissipation and shock absorption shear wall based on the researched data, and comprises the following specific steps:
step S1, respectively and independently arranging the annular metal energy dissipation part, the connecting beam damper and the two dampers in the prefabricated reinforced concrete shear wall to form three different damping energy consumption prefabricated shear walls, and calculating the strength and rigidity requirements of the annular metal energy dissipation part, the connecting beam damper and each part of a non-replacement area according to the requirements of a plurality of defense lines, thereby determining the design parameters of each part of the shear wall;
s2, respectively carrying out mechanical property tests of the novel prefabricated shear wall model with the additional energy dissipation and shock absorption components under the action of horizontal lateral repeated load, before horizontal force is applied, firstly applying vertical uniform load on the top of the wall body, keeping unchanged in the tests, researching the whole damage process of the model, revealing the yield damage sequence and damage mechanism of each part, rigidity, strength and ductility, and the influence rule of each parameter on the mechanical property of the model, revealing the energy dissipation and shock absorption working mechanism of the model through test research, and obtaining the corresponding relation between various reaction amounts and each damage state through observing and tracking the whole progressive damage process of the model in the loading process, thereby providing a direct test basis for the division of the subsequent performance grades;
and S3, a calculation model of the energy dissipation and shock absorption component is applied, a numerical calculation model of the novel shear wall with different structures is established by combining with a calculation model of the wall limbs, parameter analysis which is wider than test parameters is carried out after calibration is obtained by using test results, and reasonable construction measures and practical engineering design methods of the novel shear wall are provided on the basis.
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