CN113550457B - Basic earthquake-resistant structure of building engineering - Google Patents
Basic earthquake-resistant structure of building engineering Download PDFInfo
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- CN113550457B CN113550457B CN202110830506.5A CN202110830506A CN113550457B CN 113550457 B CN113550457 B CN 113550457B CN 202110830506 A CN202110830506 A CN 202110830506A CN 113550457 B CN113550457 B CN 113550457B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- 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
- E04B1/92—Protection against other undesired influences or dangers
- 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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- 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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Abstract
The invention relates to the technical field of constructional engineering, and discloses a foundation anti-seismic structure of constructional engineering, which comprises a support column, a first auxiliary rod, a middle auxiliary plate and a second auxiliary rod, wherein a connecting plate is arranged on the surface of the support column, a stretching groove is formed in the outer side of the support column, a rotating shaft is arranged in the stretching groove, a support pad is arranged on the inner side of the stretching groove and one end of the connecting plate, a stretching spring is arranged on the inner side of the support pad, and a support plate is arranged at the lower end of the support column. According to the foundation anti-seismic structure of the building engineering, the rotating shaft, the supporting pad and the extension spring are arranged, so that the stress degree of the first auxiliary rod and the second auxiliary rod is reduced, the toughness of the first auxiliary rod and the second auxiliary rod is improved, and the phenomena of deformation and damage caused by large stress are prevented; the buffering bolt and the buffering spring are arranged, so that a better buffering effect is achieved, and the practicability of the structure is improved; through being provided with the slidable mounting piece, improve earthquake-resistant structure's installation effectiveness.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a foundation earthquake-resistant structure of constructional engineering.
Background
The earthquake fortification categories of buildings are mainly divided according to the importance degree of the buildings, namely the buildings can be divided into 4 types according to the consequences generated when the buildings are damaged by earthquakes: class a buildings, class b buildings, class c buildings and class d buildings; the earthquake fortification categories of buildings are different, and the values of earthquake action and the adoption of earthquake-proof measures are different.
Like the basic anti-seismic structure of a building engineering of prior patent publication CN108589800B, although when receiving external vibrations, the energy of impact force does work through compressed gas, hydraulic oil overcomes the gravity and does work and turns into the elastic potential energy of spring, there is certain drawback in the use, at first, ground takes place to rock the in-process, the auxiliary rod does not have pressure relief device, the phenomenon of deformation damage takes place easily, reduce its life, secondly, in the earthquake process, the support column does not have buffer, reduce the shock resistance of structure, finally, the structure is in the installation, the installation size can not be adjusted, reduce its installation effectiveness, for this we propose a basic anti-seismic structure of building engineering.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a foundation anti-seismic structure of building engineering, which is characterized in that the stress degree of a first auxiliary rod and a second auxiliary rod is reduced, the toughness of the first auxiliary rod and the second auxiliary rod is improved, and the phenomena of deformation and damage caused by large stress are prevented by arranging a rotating shaft, a supporting pad and an extension spring; the buffering bolt and the buffering spring are arranged, so that a better buffering effect is achieved, and the practicability of the structure is improved; through being provided with the slidable mounting piece, improve the installation effectiveness's of antidetonation structure problem.
(II) technical scheme
In order to realize the above, the stress degree of the first auxiliary rod and the second auxiliary rod is reduced and the toughness of the first auxiliary rod and the second auxiliary rod is improved by arranging the rotating shaft, the supporting pad and the extension spring; the buffer bolt and the buffer spring are arranged, so that a good buffer effect is achieved; through being provided with the slidable mounting piece, improve the installation effectiveness's of anti-seismic structure purpose.
The invention provides the following technical scheme:
the utility model provides a building engineering's basic antidetonation structure, includes support column, auxiliary rod, middle part accessory plate and No. two auxiliary rods, the surface of support column is provided with the connecting plate, the outside of support column is provided with tensile groove, the inside in tensile groove is provided with the axis of rotation, the inboard in tensile groove is provided with the supporting pad with the one end of connecting plate, the inboard of supporting pad is provided with extension spring, the lower extreme of support column is provided with the backup pad, the upper end of backup pad is provided with buffer bolt, buffer bolt's the outside is provided with the buffer block, buffer bolt's hypomere is provided with fixed lid, the inboard of fixed lid is provided with buffer spring, the outside of backup pad is provided with the slip hole, the inboard of slip hole is provided with the slidable mounting piece.
Preferably, the surface of the second auxiliary rod and the surface of the connecting plate are both provided with fixing holes in a penetrating manner, fixing shafts are arranged inside the fixing holes, the second auxiliary rod and the connecting plate are movably connected through the fixing shafts, the upper end of the supporting column is fixedly connected with a top plate, the supporting column is fixedly connected with the supporting plate, and the supporting column, the middle auxiliary plate, the second auxiliary rod, the top plate and the supporting plate are all provided with four groups.
Preferably, the stretching grooves are embedded in the outer surfaces of the two ends of the supporting column, the cross sectional area of each stretching groove is larger than that of the connecting plate, the thickness of each stretching groove is smaller than that of the supporting column, the number of the stretching grooves is twice that of the supporting columns, each stretching groove is of a rectangular structure, the rotating shaft penetrates through the outer surface of one side of the connecting plate and is of a cylindrical rotating structure, and the width of the rotating shaft is larger than that of each stretching groove.
Preferably, the equal fixedly connected with supporting pad of surface of connecting plate and tensile groove, the quantity of supporting pad is a plurality of groups, and the supporting pad is the symmetry and arranges, the supporting pad is flat form cylinder structure, the inside fixedly connected with extension spring of supporting pad, and extension spring's quantity is the half of supporting pad quantity, extension spring is elastic construction.
Preferably, the side section of backup pad is several word structures, be swing joint between backup pad and the buffer bolt, the outside swing joint of buffer bolt has fixation nut, be threaded connection between buffer bolt and the fixation nut, be swing joint between buffer bolt and the buffer block, the side section of buffer block is the I structure, the buffer block is made for plastic withstand voltage material, the buffer block joint is in the upper end middle part of backup pad.
Preferably, be threaded connection between buffer bolt and the fixed lid, fixed lid quantity is two sets of and is the symmetry and arranges, fixed lid is withstand voltage material and makes, the inboard fixedly connected with buffer spring of fixed lid, the cross-sectional area of fixed lid is greater than buffer spring's cross-sectional area, buffer spring is elastic construction.
Preferably, sliding holes penetrate through the outer surface of the supporting plate, the edges of the sliding holes are of arc-shaped structures, the number of the sliding holes is four times that of the supporting plate, the sliding holes are symmetrically arranged, sliding mounting blocks are movably connected inside the sliding holes and are of hollow cylindrical structures, and the thickness of each sliding mounting block is equal to that of the supporting plate.
Preferably, the mounting hole has been run through to the upper end surface of slidable mounting piece, the cross-sectional area of mounting hole is less than the cross-sectional area of slidable mounting piece, the outside fixedly connected with spacing collar of slidable mounting piece, and the spacing collar is flat ring structure, the thickness of spacing collar is less than the thickness of slidable mounting piece, the spacing groove has been inlayed to the inboard surface of slidable mounting piece, the cross-sectional area of spacing groove is greater than the cross-sectional area of slidable mounting hole, phase-match between spacing groove and the spacing collar.
(III) advantageous effects
Compared with the prior art, the invention provides a foundation earthquake-resistant structure of building engineering, which has the following beneficial effects:
1. this building engineering's basic antidetonation structure, through being provided with tensile groove, the axis of rotation, supporting pad and extension spring, take place to rock the in-process on ground, the antidetonation structure receives the influence, make the support column rock, an auxiliary rod is connected with No. two auxiliary rods, under the supporting role is regarded as at the axis of rotation, make an auxiliary rod and No. two auxiliary rods drive the connecting plate, under the supporting pad as supporting role, extension spring extends, reduce the atress degree of an auxiliary rod and No. two auxiliary rods, improve toughness between them, prevent that the phenomenon of the great deformation damage of atress from taking place, improve its life.
2. This building engineering's basic antidetonation structure through being provided with buffer bolt, fixation nut, buffer block, fixed lid and buffer spring, and in the earthquake process that takes place, the support column atress is fixed under fixation nut for buffer bolt moves down, and simultaneously fixed lid as connecting under the supporting role, buffer spring compresses, plays better cushioning effect, improves the practicality of structure.
3. This building engineering's basic anti-seismic structure, through being provided with the sliding hole, the slidable mounting piece, the mounting hole, spacing collar and spacing groove, in the backup pad installation, the user will be through removing the slidable mounting piece, make the slidable mounting piece remove along the inside surface of sliding hole, the slidable mounting piece drives the spacing collar and removes along the inside surface of spacing groove simultaneously, until removing to suitable position, install fixedly through the mounting hole, install the backup pad fixedly, improve anti-seismic structure's installation effectiveness.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1 according to the present invention;
FIG. 3 is a partial side sectional view of a structural support column of the present invention;
FIG. 4 is a partial schematic structural view of the structural support plate and the buffer spring according to the present invention;
FIG. 5 is a partial side cross-sectional view of the structural support plate and the cushioning spring of the present invention;
FIG. 6 is an enlarged view of B in FIG. 4 according to the present invention;
fig. 7 is a partial cross-sectional view of a structural support plate of the present invention.
In the figure: 1. a support pillar; 2. an auxiliary rod I; 3. a middle auxiliary plate; 4. a second auxiliary rod; 5. a connecting plate; 6. a fixed shaft; 7. a fixing hole; 8. a drawing tank; 9. a rotating shaft; 10. a support pad; 11. an extension spring; 12. a top plate; 13. a support plate; 14. a cushion bolt; 15. fixing a nut; 16. a buffer block; 17. a fixed cover; 18. a buffer spring; 19. a slide hole; 20. a sliding mounting block; 21. mounting holes; 22. a limiting ring; 23. a limiting groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, a foundation earthquake-resistant structure of building engineering, including support column 1, auxiliary rod 2, middle part accessory plate 3 and auxiliary rod 4 No. two, the surface of support column 1 is provided with connecting plate 5, the outside of support column 1 is provided with tensile groove 8, the inside of tensile groove 8 is provided with axis of rotation 9, the inboard of tensile groove 8 and the one end of connecting plate 5 are provided with supporting pad 10, the inboard of supporting pad 10 is provided with extension spring 11, the lower extreme of support column 1 is provided with backup pad 13, the upper end of backup pad 13 is provided with buffer bolt 14, the outside of buffer bolt 14 is provided with buffer block 16, the hypomere of buffer bolt 14 is provided with fixed cover 17, the inboard of fixed cover 17 is provided with buffer spring 18, the outside of backup pad 13 is provided with slide opening 19, the inboard of slide opening 19 is provided with slidable mounting block 20.
No. two auxiliary rod 4 all runs through fixed orifices 7 with the surface of connecting plate 5, the inside of fixed orifices 7 is provided with fixed axle 6, No. two auxiliary rod 4 pass through fixed axle 6 with connecting plate 5 and be swing joint, the upper end fixedly connected with roof 12 of support column 1, be fixed connection between support column 1 and the backup pad 13, support column 1, middle part accessory plate 3, No. two auxiliary rod 4, roof 12 and backup pad 13 all are provided with four groups, are favorable to being connected of support column 1 and backup pad 13.
Example two:
on the basis of the first embodiment, as shown in fig. 2 to 3, the stretching grooves 8 are embedded in the outer surfaces of the two ends of the supporting column 1, the cross-sectional area of each stretching groove 8 is larger than that of the connecting plate 5, the thickness of each stretching groove 8 is smaller than that of each supporting column 1, the number of the stretching grooves 8 is twice that of the supporting columns 1, each stretching groove 8 is of a rectangular structure, the rotating shaft 9 penetrates through the outer surface of one side of the connecting plate 5, the rotating shaft 9 is of a cylindrical rotating structure, and the width of the rotating shaft 9 is larger than that of each stretching groove 8, so that the rotating shaft 9 and the stretching grooves 8 can be used conveniently.
Connecting plate 5 and the equal fixedly connected with supporting pad 10 of surface in tensile groove 8, the quantity of supporting pad 10 is a plurality of groups, and supporting pad 10 is the symmetry and arranges, and supporting pad 10 is flat form cylinder structure, and the inside fixedly connected with extension spring 11 of supporting pad 10, and extension spring 11's quantity is the half of supporting pad 10 quantity, and extension spring 11 is the elastic construction, is favorable to extension spring 11's use.
Example three:
on the basis of the first embodiment and the second embodiment, as shown in fig. 4-5, the cross section of the support plate 13 is a cross-shaped structure, the support plate 13 is movably connected with the buffer bolt 14, the outer side of the buffer bolt 14 is movably connected with the fixing nut 15, the buffer bolt 14 is in threaded connection with the fixing nut 15, the buffer bolt 14 is movably connected with the buffer block 16, the cross section of the buffer block 16 is in an i-shaped structure, the buffer block 16 is made of a plastic pressure-resistant material, and the buffer block 16 is clamped in the middle of the upper end of the support plate 13, so that the buffer block 16 and the buffer bolt 14 can be used together.
The buffer bolt 14 and the fixed cover 17 are in threaded connection, the fixed covers 17 are arranged in two groups and are symmetrically arranged, the fixed covers 17 are made of pressure-resistant materials, the buffer spring 18 is fixedly connected to the inner side of the fixed covers 17, the cross sectional area of the fixed covers 17 is larger than that of the buffer spring 18, and the buffer spring 18 is of an elastic structure and is beneficial to buffering of the buffer spring 18.
Example four:
on the basis of the first embodiment, the second embodiment and the third embodiment, as shown in fig. 6 to 7, sliding holes 19 penetrate through the outer surface of the supporting plate 13, the edges of the sliding holes 19 are of arc-shaped structures, the number of the sliding holes 19 is four times that of the supporting plate 13, the sliding holes 19 are symmetrically arranged, sliding mounting blocks 20 are movably connected inside the sliding holes 19, the sliding mounting blocks 20 are of hollow cylindrical structures, and the thickness of the sliding mounting blocks 20 is equal to that of the supporting plate 13, so that the sliding use of the sliding mounting blocks 20 is facilitated.
The mounting hole 21 has been run through to the upper end surface of slidable mounting piece 20, the cross-sectional area of mounting hole 21 is less than the cross-sectional area of slidable mounting piece 20, the outside fixedly connected with spacing collar 22 of slidable mounting piece 20, and spacing collar 22 is flat ring structure, the thickness of spacing collar 22 is less than the thickness of slidable mounting piece 20, spacing groove 23 has been inlayed to the inboard surface of sliding hole 19, the cross-sectional area of spacing groove 23 is greater than the cross-sectional area of sliding hole 19, phase-match between spacing groove 23 and the spacing collar 22, be favorable to the cooperation of spacing groove 23 and spacing collar 22 to use.
To sum up, the foundation anti-seismic structure of the building engineering is provided with the stretching groove 8, the rotating shaft 9, the supporting pad 10 and the stretching spring 11, so that the supporting column 1 is shaken in the shaking process on the ground, the first auxiliary rod 2 and the second auxiliary rod 4 drive the connecting plate 5 under the supporting action of the rotating shaft 9, and the stretching spring 11 extends under the supporting action of the supporting pad 10, so that the stress degree of the first auxiliary rod 2 and the second auxiliary rod 4 is reduced, the toughness of the first auxiliary rod 2 and the second auxiliary rod 4 is improved, the phenomenon of deformation and damage caused by large stress is prevented, and the service life of the foundation anti-seismic structure is prolonged; in the earthquake process, the supporting column 1 is stressed, the fixing nut 15 is used for fixing, the buffer bolt 14 moves downwards, and meanwhile, the buffer spring 18 is compressed under the supporting action of the fixing cover 17, so that a better buffer effect is achieved, and the practicability of the structure is improved; in the installation of backup pad 13, the user will be through removing slidable mounting piece 20 for slidable mounting piece 20 removes along the inboard surface of slide opening 19, and slidable mounting piece 20 drives spacing collar 22 simultaneously and removes along the inboard surface of spacing groove 23, until removing suitable position, installs through mounting hole 21, installs backup pad 13 fixedly, improves the installation effectiveness of antidetonation structure.
It is noted that, herein, relational terms such as first and second, and the like may be 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. Also, 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.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a building engineering's basic antidetonation structure, includes support column (1), auxiliary rod (2), middle part accessory plate (3) and No. two auxiliary rod (4), its characterized in that: the surface of the supporting column (1) is provided with a connecting plate (5), the outer side of the supporting column (1) is provided with a stretching groove (8), a rotating shaft (9) is arranged in the stretching groove (8), a supporting pad (10) is arranged at the inner side of the stretching groove (8) and one end of the connecting plate (5), an extension spring (11) is arranged on the inner side of the supporting pad (10), a supporting plate (13) is arranged at the lower end of the supporting column (1), the upper end of the supporting plate (13) is provided with a buffer bolt (14), the outer side of the buffer bolt (14) is provided with a buffer block (16), a fixed cover (17) is arranged at the lower section of the buffer bolt (14), a buffer spring (18) is arranged at the inner side of the fixed cover (17), a sliding hole (19) is formed in the outer side of the supporting plate (13), and a sliding mounting block (20) is arranged on the inner side of the sliding hole (19);
the surface of the second auxiliary rod (4) and the surface of the connecting plate (5) are both penetrated with a fixing hole (7), a fixing shaft (6) is arranged in the fixing hole (7), the second auxiliary rod (4) and the connecting plate (5) are movably connected through the fixing shaft (6), the upper end of the supporting column (1) is fixedly connected with a top plate (12), the supporting column (1) is fixedly connected with a supporting plate (13), the supporting column (1), the middle auxiliary plate (3), the second auxiliary rod (4), the top plate (12) and the supporting plate (13) are all provided with four groups, the stretching grooves (8) are embedded in the outer surfaces of the two ends of the supporting column (1), the cross section area of each stretching groove (8) is larger than that of the connecting plate (5), the thickness of each stretching groove (8) is smaller than that of the supporting column (1), and the number of the stretching grooves (8) is two times that of the supporting columns (1), the stretching groove (8) is of a rectangular structure, the rotating shaft (9) penetrates through the outer surface of one side of the connecting plate (5), the rotating shaft (9) is of a cylindrical rotating structure, the width of the rotating shaft (9) is larger than that of the stretching groove (8), supporting pads (10) are fixedly connected to the outer surfaces of the connecting plate (5) and the stretching groove (8), the number of the supporting pads (10) is a plurality of groups, the supporting pads (10) are symmetrically arranged, the supporting pads (10) are of flat cylindrical structures, the stretching springs (11) are fixedly connected to the inner portions of the supporting pads (10), the number of the stretching springs (11) is half of the number of the supporting pads (10), the stretching springs (11) are of elastic structures, the side sections of the supporting plates (13) are of structures shaped like a Chinese character' ji, and the supporting plates (13) are movably connected with the buffering bolts (14), the outside swing joint of buffer bolt (14) has fixation nut (15), be threaded connection between buffer bolt (14) and fixation nut (15), be swing joint between buffer bolt (14) and buffer block (16), the side section of buffer block (16) is the I structure, buffer block (16) are the withstand voltage material of plastic and make, buffer block (16) joint is in the upper end middle part of backup pad (13).
2. A foundation earthquake-resistant structure of building engineering according to claim 1, characterized in that: be threaded connection between buffer bolt (14) and fixed lid (17), fixed lid (17) quantity is two sets of and is the symmetry and arranges, fixed lid (17) are withstand voltage material and make, the inboard fixedly connected with buffer spring (18) of fixed lid (17), the cross-sectional area of fixed lid (17) is greater than the cross-sectional area of buffer spring (18), buffer spring (18) are elastic construction.
3. A foundation earthquake-resistant structure of building engineering according to claim 1, characterized in that: the utility model discloses a fixing device for fixing a supporting plate, including backup pad (13), the surface of backup pad (13) runs through there is slide opening (19), the edge of slide opening (19) is the arcuation structure, the quantity of slide opening (19) is four times of backup pad (13) quantity, slide opening (19) are the symmetry and arrange, the inside swing joint of slide opening (19) has slidable mounting piece (20), slidable mounting piece (20) are the hollow circular cylinder structure, the thickness of slidable mounting piece (20) equals with the thickness of backup pad (13).
4. A foundation earthquake-resistant structure of building engineering according to claim 1, characterized in that: the utility model discloses a sliding installation piece, including sliding installation piece (20), mounting hole (21) has been run through to the upper end surface of sliding installation piece (20), the cross-sectional area of mounting hole (21) is less than the cross-sectional area of sliding installation piece (20), the outside fixedly connected with spacing collar (22) of sliding installation piece (20), and spacing collar (22) are flat ring structure, the thickness of spacing collar (22) is less than the thickness of sliding installation piece (20), spacing groove (23) have been inlayed to the inboard surface of sliding installation piece (19), the cross-sectional area of spacing groove (23) is greater than the cross-sectional area of sliding installation piece (19), phase-match between spacing groove (23) and spacing collar (22).
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| CN202110830506.5A CN113550457B (en) | 2021-07-22 | 2021-07-22 | Basic earthquake-resistant structure of building engineering |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1021311A (en) * | 1961-01-26 | 1966-03-02 | Brockhouse Steel Structures Lt | Improvements in or relating to structural frameworks |
| CN203684394U (en) * | 2013-11-18 | 2014-07-02 | 湖南大学 | Supporting device for framework structure |
| CN203766535U (en) * | 2014-03-21 | 2014-08-13 | 南车南京浦镇车辆有限公司 | Pantograph mounting support |
| CN206545291U (en) * | 2017-02-28 | 2017-10-10 | 胡文昭 | A kind of building structure of damping |
| CN108867857A (en) * | 2018-09-07 | 2018-11-23 | 沈阳建筑大学 | A kind of assembly Braced Frames structure with function of seismic resistance |
| CN110306660B (en) * | 2019-05-24 | 2021-06-22 | 江西佳慧钢结构工程有限公司 | Assembled anti-seismic steel skeleton and anti-seismic wall for steel structure building |
| JP2020196995A (en) * | 2019-05-30 | 2020-12-10 | 株式会社Ｂ＆Ｂ技術事務所 | Joint metal fitting for brace and manufacturing method thereof |
| CN212406227U (en) * | 2020-03-10 | 2021-01-26 | 中交一公局集团有限公司 | Novel support of formula shaped steel post column base of buryying device |
| CN213508880U (en) * | 2020-09-09 | 2021-06-22 | 梁夫 | Intercolumnar strutting arrangement for steel structure building construction |
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