CN113944357A - ECC-aluminum skeleton sways wall with friction power consumption and from reset function - Google Patents
ECC-aluminum skeleton sways wall with friction power consumption and from reset function Download PDFInfo
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- CN113944357A CN113944357A CN202111178657.3A CN202111178657A CN113944357A CN 113944357 A CN113944357 A CN 113944357A CN 202111178657 A CN202111178657 A CN 202111178657A CN 113944357 A CN113944357 A CN 113944357A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
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- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
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- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
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Abstract
The invention discloses an ECC-aluminum skeleton rocking wall with friction energy consumption and self-resetting functions, which comprises a lower edge box type steel member, a prefabricated ECC-aluminum skeleton rocking wall member, a conversion steel member, an upper edge box type friction steel member, a conversion steel member, a friction core plate, a shape memory alloy bar (SMA), aluminum skeleton, various types of bolts and spring sliding plates, wherein the lower edge box type steel member is connected with a cavity by a controlled structure, the prefabricated ECC-aluminum skeleton rocking wall member is connected with the prefabricated ECC-aluminum skeleton rocking wall member, the upper edge box type friction steel member is connected with the cavity by the controlled structure, the prefabricated ECC-aluminum skeleton rocking wall is connected with the upper edge box type steel member by the prefabricated ECC-aluminum skeleton rocking wall member, the friction core plate, the shape memory alloy bar (SMA), the aluminum skeleton, the bolts and the spring sliding plates. The structure system can realize energy consumption through friction in the first stage, energy consumption and self-reset through the shape memory alloy bar (SMA) in the second stage, and three-stage energy consumption target of energy consumption through the plastic deformation of the ECC material and the aluminum alloy framework in the third stage.
Description
Technical Field
The invention relates to an ECC swing wall with the advantages of friction energy consumption capability, excellent anti-seismic performance, certain self-reset function, detachable replacement and the like, and belongs to the technical field of engineering structures.
Background
Rocking walls have been proposed for over 60 years and a large number of scholars have conducted theoretical and experimental studies. The swing wall reduces the reaction of the system under the action of power through passive swing. However, the damage at the hinged support of the swinging wall is an important factor influencing the earthquake resistance and the damping performance of the swinging wall. Once broken, the swinging wall hinge supports are difficult to repair. In addition, the crack resistance and tensile strength of the wall body of the swinging wall are also the key factors influencing the overall performance of the swinging wall. The problems of poor crack resistance of wall materials, difficult restoration of damage of hinged supports and the like need to be solved urgently, and the seismic resistance, the energy consumption capability and the self-resetting function of the swing wall are the key points of popularization and application of the swing wall. In view of the above, on one hand, various novel materials (such as steel, aluminum, etc.) are used as wall materials to improve the seismic performance of the swinging wall; on the other hand, a large number of students introduce various energy consumption elements into the swing wall, such as friction elements, so as to improve the energy consumption capability of the swing wall; in addition, the self-resetting concept is introduced into the swing wall system by some learners, and various self-resetting swing wall systems are continuously appeared, such as the swing wall introduced with prestressed tendons, and the swing wall introduced with shape memory alloys. How to balance the anti-seismic performance (energy consumption capability) and the self-resetting capability is still a hot point for studying by scholars at home and abroad.
The fiber reinforced cement-based composite material (ECC) is widely researched and primarily applied in civil engineering structures, particularly plastic hinge areas of engineering structures, due to the excellent tensile crack resistance and good anti-seismic toughness of the ECC. The aluminum alloy material has the advantages of light weight, high strength, low elastic modulus, good anti-seismic toughness and the like, and is widely applied to the construction industry. The shape memory alloy material has excellent energy consumption capacity, good self-resetting function and other functions, and is the most commonly used element in the current energy consumption device. Therefore, by taking the respective advantages and disadvantages of the three materials as reference, the novel swinging wall with excellent anti-seismic performance, energy consumption capability and certain self-resetting function is obtained. In view of the above, the present invention provides an ECC-aluminum swinging wall with friction energy dissipation and self-resetting functions. The three-stage energy consumption can be realized, the three-stage energy consumption swing wall hinge support has the advantages of simple construction process, good anti-cracking performance, high energy consumption capability, certain self-resetting function, detachable replacement and the like, can effectively overcome the defects that the traditional swing wall hinge support is not easy to repair due to damage, the wall body is poor in anti-cracking performance and the like, and has wide theoretical research significance and practical value.
Disclosure of Invention
In order to solve the problems that the traditional swinging wall is difficult to repair and dismantle after being damaged, the anti-cracking performance and the energy consumption capability are insufficient, the self-resetting capability is poor and the like, the invention provides the shape ECC-aluminum skeleton swinging wall component which has the advantages of simple construction process, good anti-cracking and anti-seismic performance, high energy consumption capability, certain self-resetting function, detachable replacement and the like and has the friction energy consumption and the self-resetting function. The composite material can be used in any available space in a frame structure beam column, a shear wall structure wall, a masonry structure wall, a bridge structure pier column and the like, and can also be used in an earthquake-resistant reinforcing structure. The structural system achieves the three-stage energy consumption goal.
The first stage is as follows: the friction device for connecting the ECC-aluminum skeleton rocking wall with the controlled structure is used for realizing the friction energy consumption of the first stage. When the friction displacement reaches the maximum value, the bolt rod is clamped into the preset position, the relative displacement of the swing wall and the controlled structure is limited, and the friction device is withdrawn from working.
And a second stage: the energy consumption and self-resetting functions of the second stage are realized by the shape memory alloy bar (SMA) which replaces the traditional prestressed tendon. And when the shape memory alloy rod SMA reaches the bearing capacity limit, the operation is stopped.
And a third stage: and 3, realizing the dissipation energy of the third-stage plastic deformation through the ECC material and the aluminum alloy framework of the ECC-aluminum skeleton swing wall. And when the prefabricated ECC-aluminum skeleton swinging wall is damaged, the operation is stopped.
In order to achieve the purpose, the invention adopts the following technical scheme.
An ECC-aluminum skeleton swinging wall with friction energy consumption and self-resetting functions comprises a lower edge box-type steel member 1, a prefabricated ECC-aluminum skeleton swinging wall member 3, a conversion steel member 2, an upper edge box-type steel member 5, a prefabricated ECC-aluminum skeleton swinging wall 3, an upper edge box-type steel member 5, a friction core plate 6, a shape memory alloy bar (SMA)7, an aluminum skeleton 10, various types of bolts 8 and spring sliding plates 9, wherein the lower edge box-type steel member 1 is connected with a cavity, the conversion steel member 2 is connected with the lower edge box-type steel member 1 and the prefabricated ECC-aluminum skeleton swinging wall member 3, the upper edge box-type steel member 5 is connected with the conversion steel member 4, the friction core plate 6 is connected with the shape memory alloy bar (SMA)7, the aluminum skeleton 10 is connected with the cavity, and the spring sliding plates 9 are connected with the cavity. The assembling steps of the ECC-aluminum skeleton swing wall with friction energy consumption and self-reset functions are as follows: firstly, the lower edge box-type steel member 1 and a foundation (which can be a foundation bearing platform, a main beam, a tie beam and the like) of a controlled structure are bolted together through high-strength bolts 8 or are poured together in a preset mode; firstly, the SMA 7 penetrates out of a top plate notch 2-3 of the connection conversion steel member 2, then the connection conversion steel member 2 is connected with a lower edge box type steel member 1 through a high-strength bolt 8, and then the SMA 7 penetrating out of the top plate notch 2-3 of the connection conversion steel member 2 is inserted into a reserved hole channel 3-1 of a prefabricated ECC-aluminum skeleton swinging wall member 3 and penetrates through a slotted hole 4-4 of a connection conversion steel member 4; connecting the top of the prefabricated ECC-aluminum skeleton swinging wall component 3 with a connection conversion steel component 4 through a reserved high-strength bolt 3-2, and anchoring the SMA 7; arranging a friction core plate 6 and a spring sliding sheet 9 between the connecting conversion steel member 4 and the upper edge box type friction steel member 5, and bolting the steel member 5 and a reserved steel plate or a rear steel plate (which can be an upper layer main beam, a tie beam, a cover beam, a roof and the like) of the connection foundation at the other end of the controlled structure to finally form the ECC-aluminum skeleton swinging wall with friction energy consumption and self-resetting functions.
The lower edge box-type steel member 1 is formed by welding steel plates and mainly comprises bottom connecting steel plates 1-1 and L-shaped pre-tightening steel plates 1-2. The steel plates are vertically crossed to form the steel member 1. Wherein 1-1 can be fixed at the positions of a foundation, a main beam, a tie beam and the like and is used for connecting detachable parts of the ECC rocking wall (except the steel component 1, the other components can be detached). The size, the shape and the hole (groove) opening position of the L-shaped pre-tightening steel plate 1-2 used for the steel plate with the bolt hole of the steel member 1 can be designed according to actual construction and use requirements, the outer surface of the steel plate with the bolt hole is flush with the upper surface of a foundation, and the bottom connecting steel plate 1-1 can be provided with a shear key in the horizontal direction to improve the connection performance of the steel plate with the foundation and other members. The bolt hole of the steel member 1 is aligned with the center of the bolt hole of the steel member 2 and is connected with a bolt.
The steel member 2 is formed by welding steel plates. Mainly comprises a bottom pre-tightening steel plate 2-1 and an upper connecting steel plate 2-2. The steel plates are vertically crossed, and the whole body is a 'groove'. The size, shape and hole (groove) position of the bottom pre-tightening steel plate 2-1 (top plate) correspond to the L-shaped pre-tightening steel plate 1-2 of the steel member 1. After the prefabricated ECC swing wall component 3 is inserted into the groove of the steel component 2, a shape memory alloy bar (SMA)7 is inserted into a reserved channel 3-1 of the prefabricated ECC swing wall 3 through a groove 2-3 on a bottom pre-tightening steel plate 2-1, and then an assembly body formed by the steel component 2 and the swing wall 3 is connected with the steel component 4 through bolts to form a complete detachable part.
The connecting and converting steel member 4 is formed by welding steel plates and comprises a bottom pre-tightening steel plate 4-1 and two slotted webs 4-2. Spring sliding sheets 9 are arranged at two ends of a channel of the web plate 4-2, and the working principle is as follows: the bolt rod drives the friction core plate 6 and the steel member 5 to slide along the channels 4-3 together, and after the bolt rod slides through the spring sliding sheet 9, the bolt rod is clamped and fixed by the spring sliding sheet. And (3) penetrating reserved bolts 3-2 and a shape memory alloy bar (SMA)7 in the prefabricated ECC swing wall 3 through bolt holes 4-5 and slotted holes 4-4 in a pre-tightening steel plate 4-1 at the bottom of the steel member 4, screwing and fixing, and connecting the steel member 2, the steel member 4 and the prefabricated ECC swing wall member 3.
The fiber concrete material of the prefabricated ECC rocking wall member 3 can be PE-ECC, PP-ECC, PVA-ECC, steel fiber-ECC and other hybrid fiber-ECC. The side face of the prefabricated ECC swing wall is in a shape of Chinese character 'ba', two ends of the prefabricated ECC swing wall are wide, and the middle of the prefabricated ECC swing wall is thin. The pre-fabricated ECC rocking wall member has a pre-formed hole for passing through a shape memory alloy rod (SMA) 7. The Shape Memory Alloy (SMA) rod 7 is used as a second-stage superelastic energy dissipation element. The cross section of the reserved hole channel is a groove and is aligned with the groove holes of the steel plate 2-1 and the steel plate 4-1. The preset bolts of the prefabricated ECC rocking wall component are used for connecting with the steel component 4.
The aluminum framework 10 is formed by splicing and then welding a T-shaped section aluminum framework 10-1 and a groove-shaped section aluminum framework 10-2. For stability reasons, a strip-shaped aluminum plate 10-3 is welded within the aluminum skeleton. The aluminum framework 10 is made of aluminum alloy materials and is arranged in the ECC swing wall 3 to serve as a swing wall framework. The aluminum ribs 10 and the ECC swing wall component 3 jointly form an ECC-aluminum rib swing wall, and participate in energy consumption of the third stage.
The steel member 5 is an angle steel. The bolt holes of the limb backs 5-1 are correspondingly aligned with the bolt holes of the friction core plate 6. The limb back 5-2 is provided with bolt holes and is connected with the tie beam through bolts. The steel member 4, the steel member 5 and the friction core plate 6 jointly form a first-stage friction energy dissipation system.
Compared with the prior art, the invention has the following advantages:
(1) the invention has reliable three-stage energy consumption capability. Friction core plates, shape memory alloys and ECC-aluminum skeleton combined walls are respectively introduced at different energy consumption stages. The energy consumption components in each energy consumption stage consume energy in sequence, the stress mechanism is clear, and the anti-seismic energy consumption targets such as friction energy consumption, hyperelastic energy consumption, plastic deformation energy consumption and the like are fully realized.
(2) The invention has the advantages of strong deformation capability, excellent anti-seismic toughness, strong energy consumption capability, certain self-resetting function, convenient disassembly and replacement, capability of realizing factory prefabrication and the like, adopts bolting modes such as bolt connection, shape memory alloy rod SMA connection and the like between components, effectively improves the construction speed of the swing wall, reduces the construction difficulty, can effectively improve the repairability of the traditional swing wall after earthquake, and promotes the application and development of the assembled swing wall.
Drawings
FIG. 1 is an isometric view of an ECC friction energy dissipation shape memory alloy energy dissipation swinging wall;
FIG. 2 is a schematic view of the installation of a shape memory alloy rod SMA;
FIG. 3 is a schematic view of the friction steel member being disassembled and assembled
FIG. 4 is an external view of a prefabricated aluminum rib-ECC rocking wall;
FIG. 5 is an isometric view of an aluminum alloy skeleton;
FIG. 6 is a reinforcement diagram of the rocking wall;
figure 7 is a schematic view of a steel member 1;
FIG. 8 is a schematic view of a steel member 2;
FIG. 9 is a schematic view of the steel member 4;
FIG. 10 is a schematic view of a connection between shear walls;
FIG. 11 is a schematic view of an aluminum frame between shear walls;
FIG. 12 is a schematic view of the shear wall friction device 11;
description of the drawings: the detail view of the steel member 4 in fig. 9-c is a spring sliding sheet, when the bolt rod passes through the spring sliding sheet, the bolt rod is clamped and fixed, namely, the friction energy dissipation device is withdrawn from operation.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Preferred examples are as follows:
as shown in figure 1, the ECC-aluminum skeleton rocking wall with friction energy consumption and self-resetting functions for beam columns of a frame structure comprises a lower edge box type steel component 1 connected with a cavity by a controlled structure, a prefabricated ECC-aluminum skeleton rocking wall component 3, a conversion steel component 2 connected with the lower edge box type steel component 1 and the prefabricated ECC-aluminum skeleton rocking wall component 3, a friction core plate 6 connected with an upper edge box type steel component 5 connected with the cavity by the controlled structure, a prefabricated ECC-aluminum skeleton rocking wall-upper edge box type steel component 5, a shape memory alloy bar (SMA)7, aluminum skeletons 10, various types of bolts 8 and spring sliding plates 9.
As shown in FIG. 7, the steel member 1 is formed by welding a bottom connecting steel plate 1-1 and an L-shaped pre-tightening steel plate 1-2. The steel plates are vertically crossed to form the steel member 1. Wherein 1-1 can be fixed at the positions of a foundation, a main beam, a tie beam and the like and is used for connecting detachable parts of the ECC rocking wall (except the steel component 1, the other components can be detached). The size of the L-shaped pre-tightening steel plate 1-2 is 400 multiplied by 2700mm in length multiplied by width, and the bolt hole spacing is as follows: 750mm in the long direction and 250mm in the wide direction. The size of the bottom connecting steel plate 1-1 is required to meet the requirements of space for installing upper components and rigidity, strength and the like required by connection, and the bottom connecting steel plate is used as a connecting steel plate to be fixed in a foundation. The outer surface of the steel plate with the bolt holes is flush with the upper surface of the foundation, and the bottom connecting steel plate 1-1 can be provided with a shear key in the horizontal direction to improve the connecting performance of the steel plate with the foundation and other members. The bolt hole of the steel member 1 is aligned with the center of the bolt hole of the steel member 2 and is connected with a bolt.
As shown in fig. 8, the steel member 2 is composed of welded steel plates. Mainly comprises a bottom pre-tightening steel plate 2-1 and an upper connecting steel plate 2-2. The steel plates are vertically crossed and are integrally a 'groove' type component. The size, shape and hole (groove) position of the bottom pre-tightening steel plate 2-1 (top plate) correspond to the L-shaped pre-tightening steel plate 1-2 of the steel member 1. After the prefabricated ECC swing wall component 3 is inserted into the groove of the steel component 2, a shape memory alloy bar (SMA)7 is inserted into a channel 3-1 of the prefabricated ECC swing wall 3 through a groove 2-3 on a bottom pre-tightening steel plate 2-1, and then an assembly body formed by the steel component 2 and the swing wall 3 is connected with the steel component 4 through bolts to form a complete detachable part.
As shown in FIG. 9, the connecting and converting steel member 4 is formed by welding steel plates and comprises a bottom pre-tightening steel plate 4-1 and two slotted webs 4-2. The size of the bottom pre-tightening steel plate 4-1 is 2600mm by 300 mm. The dimension of the web 4-2 is 2600 × 150mm in length × width. Two ends of the 4-2 channel 4-3 of the web plate are provided with spring sliding sheets 9, and the working principle is as follows: the bolt rod drives the friction core plate 6 and the steel member 5 to slide along the channels 4-3 together, and after the bolt rod slides through the spring sliding sheet 9, the bolt rod is clamped and fixed by the spring sliding sheet. And (3) penetrating a preset bolt and a shape memory alloy bar (SMA)7 in the prefabricated ECC swing wall 3 through a bolt hole 4-5 and a slotted hole 4-4 on a pre-tightening steel plate 4-1 at the bottom of the steel member 4, screwing and fixing, and connecting the steel member 2, the steel member 4 and the prefabricated ECC swing wall member 3.
As shown in fig. 4, the fiber material of the prefabricated ECC rocking wall member 3 is PVA fiber, and the ECC strength grade is C30. The side face of the prefabricated ECC swing wall is in a shape of a Chinese character 'ba', the two ends of the prefabricated ECC swing wall are wide, and the middle of the prefabricated ECC swing wall is thin (the size of a vertical face is 3600 multiplied by 2700mm in height multiplied by width, the side vertical face is in a bracket shape with two ends, and the thickness of the middle wall body is 120 mm). The pre-fabricated ECC rocking wall member has a pre-formed hole for passing through a shape memory alloy rod (SMA) 7. The cross section of the reserved hole 3-1 is a groove and is aligned with the groove holes of the steel plate 2-1 and the steel plate 4-1. The preset bolts of the prefabricated ECC rocking wall component are used for connecting with the steel component 4.
As shown in fig. 5, the aluminum skeleton 10 is formed by first splicing and then welding a T-section aluminum skeleton 10-1 (T-section: 280mm 150mm 20mm, length 2500mm) and a groove-section aluminum skeleton 10-2 (groove-section: 80mm 150mm 20mm, height 3450 mm). For stability reasons, a strip-shaped aluminum plate 10-3 is welded within the aluminum skeleton. The aluminum framework 10 is made of aluminum alloy materials and is arranged in the ECC swing wall 3 to serve as a swing wall framework.
As shown in fig. 3. The steel member 5 is an angle steel (L-shaped cross section: 150mm 20mm, length 2600 mm). The bolt holes of the limb backs 5-1 are correspondingly aligned with the bolt holes of the friction core plate 6. The limb back 5-2 is provided with bolt holes and is connected with the tie beam through bolts.
During actual construction, the ECC-aluminum skeleton swing wall with friction energy consumption and self-resetting functions comprises the following construction steps:
and step one, transporting all the components to the site, wherein the components comprise a prefabricated ECC-aluminum skeleton swing wall, various section steels and bolts. Firstly, the lower edge box type steel member 1 and a foundation (which can be a foundation bearing platform, a main beam, a tie beam and the like) of a controlled structure are bolted or cast together in a preset mode through high-strength bolts.
And step two, assembling and prefabricating the ECC-aluminum skeleton swing wall component 3, the connection conversion steel component 2, the connection conversion steel component 4 and the shape memory alloy rod (SMA)7 on site. Firstly, the SMA 7 penetrates out of a top plate notch 2-3 of the connection conversion steel member 2, then the connection conversion steel member 2 is connected with a lower edge box type steel member 1 through a high-strength bolt 8, and then the SMA 7 penetrating out of the top plate notch 2-3 of the connection conversion steel member 2 is inserted into a reserved hole 3-1 of the prefabricated ECC-aluminum skeleton rocking wall member 3 and penetrates through the connection conversion member 4; and after the top of the prefabricated ECC-aluminum skeleton swinging wall component 3 is connected with the connection conversion steel component 4 through the high-strength bolt 3-2, the SMA 7 is anchored.
And step three, arranging a friction core plate 6 and a spring sliding sheet 9 between the connection conversion steel member 4 and the upper edge box type friction steel member 5, and bolting the steel member 5 and a reserved steel plate or a rear steel plate (which can be an upper layer main beam, a tie beam, a cover beam, a roof and the like) of the connection foundation at the other end of the controlled structure. Two friction core plates 6 are symmetrically arranged at two sides of a web plate 4-2 of the connecting and converting steel member 4, and after the bolt holes of the friction core plates 6 and a limb back 5-1 of the steel member 5 are aligned, the web plate of the connecting and converting steel member 4, the friction core plates 6 and the steel member 5 are connected together through common bolts. Finally, the ECC-aluminum skeleton swing wall with friction energy consumption and self-reset functions is formed.
Preferred example two:
the example provides an ECC-aluminum skeleton rocking wall with friction energy dissipation and self-reset functions for a shear wall structure. As shown in fig. 10-12, this example has only more shear wall friction devices 11 than the example. The device comprises a controlled structure, a cavity, a lower edge box-type steel member 1, prefabricated ECC-aluminum skeleton rocking wall members 3 and B2, a conversion steel member 2, a controlled structure, a prefabricated ECC-aluminum skeleton rocking wall-upper edge box-type steel member 5, a friction core plate 6, a shape memory alloy bar (SMA)7, an aluminum skeleton 10, various types of bolts 8 and a spring sliding plate 9, wherein the lower edge box-type steel member 1 and the prefabricated ECC-aluminum skeleton rocking wall members 3 are connected, the controlled structure is connected with the cavity, the upper edge box-type steel member 5 is prefabricated, the ECC-aluminum skeleton rocking wall-upper edge box-type steel member 5 is connected, and the conversion steel member 4 is connected with the friction core plate 6.
The steel member 1 is formed by welding a bottom connecting steel plate 1-1 and an L-shaped pre-tightening steel plate 1-2. The steel plates are vertically crossed to form the steel member 1. Wherein 1-1 can be fixed at the positions of a foundation, a main beam, a tie beam and the like and is used for connecting detachable parts of the ECC rocking wall (except the steel component 1, the other components can be detached). The size of the L-shaped pre-tightening steel plates 1-2 is 400 multiplied by 5400mm in length multiplied by width, and the bolt hole spacing is as follows: 750mm in the long direction and 250mm in the wide direction. The size of the bottom connecting steel plate 1-1 is required to meet the requirements of space for installing upper components and rigidity, strength and the like required by connection, and the bottom connecting steel plate is used as a connecting steel plate to be fixed in a foundation. The outer surface of the steel plate with the bolt holes is flush with the upper surface of the foundation, and the bottom connecting steel plate 1-1 can be provided with a shear key in the horizontal direction to improve the connecting performance of the steel plate with the foundation and other members. The bolt hole of the steel member 1 is aligned with the center of the bolt hole of the steel member 2 and is connected with a bolt.
The steel member 2 is formed by welding steel plates. Mainly comprises a bottom pre-tightening steel plate 2-1 and an upper connecting steel plate 2-2. The steel plates are vertically crossed, and the whole body is in a 'groove' shape. The size, shape and hole (groove) position of the bottom pre-tightening steel plate 2-1 (top plate) correspond to the L-shaped pre-tightening steel plate 1-2 of the steel member 1. After the prefabricated ECC rocking wall component 3 is inserted into the groove of the steel component 2, a shape memory alloy bar (SMA)7 is inserted into the prefabricated ECC rocking walls 3 and 12 through a groove 2-3 on a bottom pre-tightening steel plate 2-1, and then an assembly body formed by the steel component 2 and the rocking walls 3 and 12 is connected with the steel component 4 through bolts to form a complete detachable part.
The connecting and converting steel member 4 is formed by welding steel plates and comprises a bottom pre-tightening steel plate 4-1 and two slotted webs 4-2. The size of the bottom pre-tightening steel plate 4-1 is 2600mm by 300 mm. The dimension of the web 4-2 is 2600 × 150mm in length × width. Spring sliding sheets 9 are arranged at two ends of a channel of the web plate 4-2, and the working principle is as follows: the bolt rod drives the friction core plate 6 and the steel member 5 to slide along the channels 4-3 together, and after the bolt rod slides through the spring sliding sheet, the bolt rod is clamped and fixed by the spring sliding sheet. And (3) penetrating a preset bolt and a shape memory alloy bar (SMA)7 in the prefabricated ECC swing wall 3 through a bolt hole 4-5 and a slotted hole 4-4 on a pre-tightening steel plate 4-1 at the bottom of the steel member 4, screwing and fixing, and connecting the steel member 2, the steel member 4 and the prefabricated ECC swing wall member 3 (or 12).
The fiber material of the prefabricated ECC rocking wall member 3 is PP fiber, and the ECC strength grade is C40. The side face of the prefabricated ECC swing wall is in a shape of a Chinese character 'ba', the two ends of the prefabricated ECC swing wall are wide, and the middle of the prefabricated ECC swing wall is thin (the size of a vertical face is 3600 multiplied by 2700mm in height multiplied by width, the side vertical face is in a bracket shape with two ends, and the thickness of the middle wall body is 120 mm). The material construction of B2 and 3 is the same. The pre-fabricated ECC rocking wall member has a pre-formed hole for passing through a shape memory alloy rod (SMA) 7. The cross section of the reserved hole 3-1 is a groove and is aligned with the groove holes of the steel plate 2-1 and the steel plate 4-1. The preset bolts of the prefabricated ECC rocking wall component are used for connecting with the steel component 4.
The aluminum framework 10 is formed by splicing and welding a T-shaped section aluminum bone 10-1 (T-shaped section: 280mm 150mm 20mm, length 2500mm) and a groove-shaped section aluminum bone 10-2 (groove-shaped section: 80mm 150mm 20mm, height 3450 mm). For stability reasons, a strip-shaped aluminum plate 10-3 is welded within the aluminum skeleton. The aluminum framework 10 is made of aluminum alloy material and is arranged in the ECC swing walls 3 and 12 to serve as the swing wall framework.
The steel member 5 is an angle steel (L-shaped cross section: 150mm 20mm, length 2600 mm). The bolt holes of the limb backs 5-1 are correspondingly aligned with the bolt holes of the friction core plate 6. The limb back 5-2 is provided with bolt holes and is connected with the tie beam through bolts.
The friction device 11 includes a channel steel 11-1 (cross-sectional dimension: 80mm 300mm 20mm, length 900mm), a friction core plate 13 (length × width 900mm × 280mm), and a connecting steel plate 11-2 (length × width 1200mm × 300 mm). The channel steel 11-1 and the connecting steel plate 11-2 are welded to the aluminum frame.
The installation process of the rocking walls 3 and B2 is the same as in the first example and will not be described here. After the swinging walls 3 and 12 are installed, the friction device 11 between the shear walls is installed. Finally forming the ECC-aluminum skeleton swinging wall with friction energy consumption and self-resetting functions for the shear wall structure.
The foregoing is merely a preferred embodiment of the present patent, but practice of the present patent is not limited thereto. Various changes and modifications may be made to the invention without departing from the spirit and scope of the invention, and such changes and modifications are intended to be within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The utility model provides a wall is swayd to ECC aluminium bone with friction power consumption and from reset function which characterized in that: the swing wall comprises a lower edge box-type steel member, a prefabricated ECC aluminum bone swing wall member, a conversion steel member, an upper edge box-type steel member, a prefabricated ECC aluminum bone swing wall, a conversion steel member, a friction core plate, a shape memory alloy bar, aluminum bones, various types of bolts and spring sliding sheets, wherein the controlled structure is connected with a cavity; the lower edge box-type steel member and the foundation of the controlled structure are bolted or cast together in a preset mode through a high-strength bolt; the SMA penetrates out of a top plate notch of the connection conversion steel member, the connection conversion steel member is connected with a lower edge box type steel member through a high-strength bolt, and the SMA penetrating out of the top plate notch of the connection conversion steel member is inserted into a reserved hole channel of the prefabricated ECC aluminum skeleton swinging wall member and penetrates through the connection conversion member; the top of the prefabricated ECC aluminum skeleton swinging wall component is connected with a connection conversion steel component through a high-strength bolt to anchor the SMA; and a friction core plate and a spring sliding sheet are arranged between the connection conversion steel member and the upper edge box type friction steel member, and the steel member is bolted with a reserved steel plate or a rear steel plate of the connection foundation of the other end of the controlled structure.
2. The ECC aluminum frame rocking wall with friction energy consumption and self-resetting functions is characterized in that: the lower edge box-type steel component is a steel component, is fixed at the positions of the foundation, the main beam and the tie beam and is used for connecting the detachable part of the ECC swing wall; the L-shaped pre-tightening steel plate is designed according to actual construction and use requirements in terms of size, shape and hole opening position of the steel plate with the bolt holes of the steel member, the outer surface of the steel plate with the bolt holes is flush with the upper surface of a foundation, and the bottom connecting steel plate can be provided with shear keys in the horizontal direction to improve the connection performance of the bottom connecting steel plate and the foundation member; the bolt holes of the steel members are aligned with the centers of the bolt holes of the steel members and are connected by bolts.
3. The ECC aluminum frame rocking wall with friction energy consumption and self-resetting functions is characterized in that: the steel member is mainly provided with a bottom pre-tightening steel plate and an upper connecting steel plate; all the steel plates are vertically crossed; the size, the shape and the hole opening position of the bottom pre-tightening steel plate correspond to those of the L-shaped pre-tightening steel plate of the steel member; after the prefabricated ECC sways the wall component and inserts in the steel component recess, the shape memory alloy stick passes through the groove on the pretension steel sheet in bottom and inserts in the channel of prefabricated ECC sways the wall, and the steel component is connected and constitutes complete detachable part with the steel component through the bolt with the assembly body that the wall was constituteed jointly swayd to the steel component afterwards.
4. The ECC aluminum frame rocking wall with friction energy consumption and self-resetting functions is characterized in that: the connection conversion steel member is formed by welding steel plates and comprises a bottom pre-tightening steel plate and two slotted webs; there is the spring gleitbretter at web channel both ends, and the theory of operation does: the bolt rod drives the friction core plate and the steel member to slide along the channel together, and the bolt rod is clamped and fixed by the spring sliding sheet after sliding through the spring sliding sheet; and (3) penetrating a preset bolt and a shape memory alloy bar in the prefabricated ECC swing wall through a bolt hole and a slotted hole in a bottom pre-tightening steel plate of the steel member, screwing and fixing, and connecting the steel member, the steel member and the prefabricated ECC swing wall member.
5. The ECC aluminum frame rocking wall with friction energy consumption and self-resetting functions is characterized in that: the fiber concrete material of the prefabricated ECC rocking wall component is PEECC, PPECC, PVAECC, steel fiber ECC and other mixed fiber ECC; the side surface of the prefabricated ECC swing wall is in a shape of Chinese character 'ba', the two ends of the prefabricated ECC swing wall are wide, and the middle of the prefabricated ECC swing wall is thin; the reserved hole of the prefabricated ECC rocking wall component is used for penetrating through the shape memory alloy rod; the cross section of the reserved hole channel is a groove and is aligned with the slotted holes of the steel plate and the steel plate; the preset bolts of the prefabricated ECC rocking wall component are used for being connected with a steel component.
6. The ECC aluminum frame rocking wall with friction energy consumption and self-resetting functions is characterized in that: the aluminum framework is formed by splicing and welding T-shaped section aluminum bones and groove-shaped section aluminum bones; welding a strip-shaped aluminum plate in the aluminum framework for stability; the aluminum framework is made of aluminum alloy materials and is arranged in the ECC swing wall to serve as the swing wall framework.
7. The ECC aluminum frame rocking wall with friction energy consumption and self-resetting functions is characterized in that: the steel member is an angle steel; the bolt holes of the limb back are correspondingly aligned with the bolt holes of the friction core plate; bolt holes are reserved on the backs of the limbs and are connected with the tie beams through bolts.
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| CN113944357B (en) | 2023-03-21 |
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