CN113530338A - Self-resetting concrete column with additional replaceable damper and steel pipe concrete structure - Google Patents

Self-resetting concrete column with additional replaceable damper and steel pipe concrete structure Download PDF

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Publication number
CN113530338A
CN113530338A CN202110881512.3A CN202110881512A CN113530338A CN 113530338 A CN113530338 A CN 113530338A CN 202110881512 A CN202110881512 A CN 202110881512A CN 113530338 A CN113530338 A CN 113530338A
Authority
CN
China
Prior art keywords
column
steel pipe
concrete structure
pipe concrete
damper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110881512.3A
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Chinese (zh)
Inventor
白久林
贺晶
陈辉明
金双双
杨经纬
胡少伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing University
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Chongqing University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing University filed Critical Chongqing University
Priority to CN202110881512.3A priority Critical patent/CN113530338A/en
Publication of CN113530338A publication Critical patent/CN113530338A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/021Bearing, supporting or connecting constructions specially adapted for such buildings
    • E04H9/0237Structural braces with damping devices
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/98Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04CSTRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00Structural elongated elements designed for load-supporting
    • E04C3/30Columns; Pillars; Struts
    • E04C3/34Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04HBUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H9/00Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate
    • E04H9/02Buildings, or groups of buildings, or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake, extreme climate withstanding earthquake or sinking of ground
    • E04H9/025Structures with concrete columns

Abstract

The invention relates to a self-resetting concrete column with a steel pipe concrete structure and an additional replaceable damper, belonging to the technical field of structural engineering earthquake resistance, and comprising an upper column, a lower column, a steel pipe concrete structure, shearing-resistant angle steel, a disc spring and a damper; the end plate of the lower column is provided with a shear-resistant and anti-pulling steel bar embedded into the lower column; the upper end of the steel pipe concrete structure is fixedly connected with the end plate of the upper column, the lower end of the steel pipe concrete structure is movably contacted with the end plate of the lower column and is connected with the end plate of the upper column through shear-resistant angle steel, and the steel pipe concrete structure and the end plate of the upper column can be lifted together during earthquake. The steel pipe concrete structure is fixed with the backup pad that the level set up, and the backup pad top has a plurality of groups dish spring around steel pipe concrete structure equipartition, realizes from restoring to the throne through the elastic force of dish spring. The four groups of dampers surround the cross-shaped member, the upper end and the lower end of each damper are detachably connected with the end plates of the upper column and the lower column respectively, the dampers can dissipate earthquake energy, damage of the structure after the earthquake is reduced, and the damper is easy to replace and maintain after the earthquake.

Description

Self-resetting concrete column with additional replaceable damper and steel pipe concrete structure
Technical Field
The invention belongs to the technical field of structural engineering earthquake resistance, and relates to a self-resetting concrete column with a steel pipe concrete structure and an additional replaceable damper.
Background
At present, the performance-based earthquake-proof design becomes the mainstream of earthquake-proof design, and how to enable the whole building, even the whole city and even the whole society to have the recovery function after an earthquake occurs has brought close attention and wide discussion to the earthquake engineering world in recent years. How to design a structure which can not be damaged or only be damaged quickly in the earthquake becomes one of the important research directions for the sustainable development of engineering earthquake resistance. By weakening some parts of the structure system and realizing concentrated energy dissipation at the parts, the damage of the structure under the action of earthquake can be effectively controlled, and the damaged parts can be replaced to ensure that the building can quickly recover the function after the earthquake.
After the earthquake, the end part of the concrete frame column foot can generate plastic hinge, and the stability of the whole structure is influenced. The column base is difficult to repair after being damaged, and the restorability after the earthquake is poor. If the damage is concentrated on the energy consumption mechanism, the function of the structure can be quickly recovered only by replacing the energy consumption mechanism after the earthquake.
Disclosure of Invention
In view of the above, the present invention is directed to a self-resetting concrete column with an additional replaceable damper in a steel pipe concrete structure, so as to solve the problem of difficulty in post-earthquake maintenance of the existing concrete column.
In order to achieve the purpose, the invention provides the following technical scheme:
a self-resetting concrete column with a steel pipe concrete structure and an additional replaceable damper comprises an upper column, a lower column, the steel pipe concrete structure, shearing-resistant angle steel, a disc spring and the damper;
the upper column and the lower column are arranged at intervals and are reinforced concrete square columns, end plates are respectively fixed on the mutually-oriented cylindrical surfaces of the upper column and the lower column, and shear-resistant and anti-pulling steel bars embedded into the lower column are arranged on the end plates of the lower column; the steel pipe concrete structure is arranged between the upper column and the lower column in the middle, the upper end of the steel pipe concrete structure is fixedly connected with the end plate of the upper column, and the lower end of the steel pipe concrete structure is movably contacted with the end plate of the lower column and is connected with the end plate of the lower column through shear angle steel; a horizontally arranged support plate is fixed on the steel pipe concrete structure, and a plurality of groups of disc springs are uniformly distributed above the support plate around the steel pipe concrete structure;
the dampers are four groups and are arranged around the steel pipe concrete structure, and the upper ends and the lower ends of the dampers are detachably connected with the end plates of the upper column and the lower column respectively.
Further, the steel pipe concrete structure is in a square column shape.
Furthermore, each group of disc springs is sleeved at the upper end of the screw rod, and is fixed above the supporting plate through a matched nut, and the lower end of the screw rod penetrates through the supporting plate to be connected with the end plate of the lower column.
Further, each set of dampers comprises a slideway, a dog bone plate and a restraining sleeve; the two slideways are fixedly connected to the end plates of the upper column and the lower column respectively, the dog bone plate is in a shape with two wide ends and a narrow middle part, the upper end and the lower end of the dog bone plate are inserted into the slideways respectively, and the middle part of the dog bone plate is sleeved with the restraint sleeve.
Furthermore, the upper end and the lower end of the dog bone plate are respectively connected with the corresponding slide ways through bolts.
Further, the end plates, the support plates and the dampers are made of steel.
Further, the space from the support plate to the upper column end plate is larger than the space from the support plate to the lower column end plate.
The invention has the beneficial effects that:
(1) the invention performs shear resistance through several aspects: 1) the steel pipe concrete structure and the shear angle steel have the shear-resistant effect; 2) the end plate of the lower column is provided with a shear-resistant and anti-pulling steel bar embedded into the lower column, and the shear-resistant steel bar also plays a role in shearing resistance when an earthquake occurs.
(2) The lower end of the steel pipe concrete structure is in movable contact with the end plate of the lower column and is connected with the lower column through the shear-resistant angle steel, and due to the characteristic that the corner of the angle steel is bent, the lower end of the steel pipe concrete structure is not completely locked on the end plate of the lower column, so that the steel pipe concrete structure can be lifted up together with the upper column during an earthquake, and the self-resetting of the upper column and the steel pipe concrete structure is realized through the elastic force provided by the disc springs arranged on the supporting plate.
(3) The damper plays a role in dissipating seismic energy, bears seismic load and controls damage on the damper, so that the connecting joint part of the upper column and the lower column is protected, and the seismic performance of the concrete column is improved. Because the attenuator can be dismantled with upper prop, lower post and be connected, take place easily to change after the damage.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic view of the construction of the present invention (damper not mounted state);
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a schematic structural view of the damper of the present invention.
Reference numerals: the steel pipe concrete structure comprises an upper column 1, a lower column 2, an end plate 3, a steel pipe concrete structure 4, shear-resistant angle steel 5, a support plate 6, a disc spring 7, a screw 8, a nut 9, shear-resistant and anti-pulling steel bars 10, a damper 11, a slideway 111, a dog bone plate 112 and a constraint sleeve 113.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 3, a self-restoring concrete column with an additional replaceable damper in a steel pipe concrete structure includes an upper column 1, a lower column 2, a steel pipe concrete structure 4, shear angle steel 5, a disc spring 7 and a damper 11.
The upper column 1 and the lower column 2 are arranged at intervals and are reinforced concrete square columns, the two mutually-oriented cylindrical surfaces are respectively fixed with a steel end plate 3, the end plate 3 of the lower column 2 is provided with shear-resistant and anti-pulling steel bars 10 embedded into the lower column 2, and the shear-resistant mode of the scheme is one of the shear-resistant modes. Steel pipe concrete structure 4 is the square column type, locates between upper prop 1 and the lower prop 2 placed in the middle, and its upper end links firmly with the end plate 3 of upper prop 1, and the lower extreme links to each other through shearing angle steel 5 with the end plate 3 movable contact of lower prop 2, and this scheme shearing angle steel 5 adopts great angle steel, ensures sufficient ability of shearing, and steel pipe concrete structure 4 all plays the effect of shearing with shearing angle steel 5, this for the mode two that shears of this scheme. A horizontally arranged steel support plate 6 is fixed on the steel pipe concrete structure 4, and four groups of disc springs 7 are uniformly distributed above the support plate 6 and around the steel pipe concrete structure 4; each group of disc springs 7 is sleeved at the upper end of the screw rod 8, each group of disc springs 7 is fixed above the supporting plate 6 through the matched nut 9, the lower end of the screw rod 8 penetrates through the supporting plate 6 to be connected with the end plate 3 of the lower column 2, and the specific connection mode can be welding or threaded connection. The space from the support plate 6 to the end plate 3 of the upper column 1 is larger than the space from the support plate 6 to the end plate 3 of the lower column 2, so that the installation operation of the disc spring 7 and the damper 11 is facilitated. Due to the characteristic of the angle steel that the corner of the angle steel is bent, the lower end of the steel pipe concrete structure 4 is not completely locked on the end plate 3 of the lower column 2, so that the steel pipe concrete structure 4 can be lifted up together with the upper column 1 during an earthquake, and in the process, the self-resetting of the upper column 1 and the steel pipe concrete structure 4 is realized through the elastic force provided by the disc spring 7.
The dampers 11 are made of steel, and are four groups in total and are arranged around the steel pipe concrete structure 4. Each set of dampers 11 comprises a slideway 111, a dog-bone plate 112 and a restraining sleeve 113; the two slide ways 111 are fixedly connected to the end plates 3 of the upper column 1 and the lower column 2 respectively, the dog bone plate 112 is in a shape that two ends are wide and the middle is narrow, the upper end and the lower end of the dog bone plate are inserted into the slide ways 111 respectively and connected through bolts, the bolts are unscrewed, and the dog bone plate 112 can be detached along the slide ways 111 conveniently. The middle part of the dog bone plate 112 is sleeved with a restraining sleeve 113, the restraining sleeve 113 is formed by welding a plurality of steel plates and is provided with a cavity for accommodating the middle part of the restraining sleeve 113, and the restraining sleeve 113 plays a role in preventing the dog bone plate 112 from buckling.
The damper 11 plays a role in dissipating seismic energy, bears seismic load, and controls damage on the damper 11, so that the connection node part of the upper column 1 and the lower column 2 is protected, and the seismic performance of the concrete column is improved. Because the damper 11 is detachably connected with the upper column 1 and the lower column 2, the damper is easy to replace after being damaged.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims (7)

1. The utility model provides a have self-healing concrete column of removable attenuator of additional of steel core concrete structure which characterized in that: comprises an upper column, a lower column, a steel pipe concrete structure, shearing resistant angle steel, a disc spring and a damper;
the upper column and the lower column are arranged at intervals and are reinforced concrete square columns, end plates are respectively fixed on the mutually-oriented cylindrical surfaces of the upper column and the lower column, and shear-resistant and anti-pulling steel bars embedded into the lower column are arranged on the end plates of the lower column; the steel pipe concrete structure is arranged between the upper column and the lower column in the middle, the upper end of the steel pipe concrete structure is fixedly connected with the end plate of the upper column, and the lower end of the steel pipe concrete structure is movably contacted with the end plate of the lower column and is connected with the end plate of the lower column through shear angle steel; a horizontally arranged support plate is fixed on the steel pipe concrete structure, and a plurality of groups of disc springs are uniformly distributed above the support plate around the steel pipe concrete structure;
the dampers are four groups and are arranged around the steel pipe concrete structure, and the upper ends and the lower ends of the dampers are detachably connected with the end plates of the upper column and the lower column respectively.
2. The self-restoring concrete column with additional replaceable damper of the steel pipe concrete structure according to claim 1, wherein: the steel pipe concrete structure is in a square column shape.
3. The self-restoring concrete column with additional replaceable damper of the steel pipe concrete structure according to claim 1, wherein: each group of disc springs is sleeved at the upper end of the screw rod, and is fixed above the supporting plate through a matched nut, and the lower end of the screw rod penetrates through the supporting plate to be connected with the end plate of the lower column.
4. The self-restoring concrete column with additional replaceable damper of the steel pipe concrete structure according to claim 1, wherein: each group of dampers comprises a slideway, a dog bone plate and a restraining sleeve; the two slideways are fixedly connected to the end plates of the upper column and the lower column respectively, the dog bone plate is in a shape with two wide ends and a narrow middle part, the upper end and the lower end of the dog bone plate are inserted into the slideways respectively, and the middle part of the dog bone plate is sleeved with the restraint sleeve.
5. The self-restoring concrete column with additional replaceable damper of a steel pipe concrete structure according to claim 4, wherein: the upper end and the lower end of the dog bone plate are respectively connected with the corresponding slide ways through bolts.
6. The self-restoring concrete column with additional replaceable damper of the steel pipe concrete structure according to claim 1, wherein: the end plates, the supporting plates and the dampers are made of steel.
7. The self-restoring concrete column with additional replaceable damper of the steel pipe concrete structure according to claim 1, wherein: the space from the support plate to the upper column end plate is larger than the space from the support plate to the lower column end plate.
CN202110881512.3A 2021-08-02 2021-08-02 Self-resetting concrete column with additional replaceable damper and steel pipe concrete structure Pending CN113530338A (en)

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CN202110881512.3A CN113530338A (en) 2021-08-02 2021-08-02 Self-resetting concrete column with additional replaceable damper and steel pipe concrete structure

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113530337A (en) * 2021-08-02 2021-10-22 重庆大学 Self-resetting concrete column with bowl-shaped structure and additional replaceable damper

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JP2001090778A (en) * 1999-09-27 2001-04-03 Shimizu Corp Base isolation device and installing structure thereof
JP2004019157A (en) * 2002-06-13 2004-01-22 Fujita Corp Seismic response control construction of reinforced concrete construction structure
JP2007023626A (en) * 2005-07-19 2007-02-01 Nippon Sharyo Seizo Kaisha Ltd Vibration-controlled base-isolated structure
CN105484152A (en) * 2015-11-24 2016-04-13 北京工业大学 Connection mode of pier and bearing platform through additional mild steel dampers
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Publication number Priority date Publication date Assignee Title
CN113530337A (en) * 2021-08-02 2021-10-22 重庆大学 Self-resetting concrete column with bowl-shaped structure and additional replaceable damper

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