CN210562613U - Vertical dry-type connecting node of prefabricated assembled frame post of keyway that shears in area - Google Patents
Vertical dry-type connecting node of prefabricated assembled frame post of keyway that shears in area Download PDFInfo
- Publication number
- CN210562613U CN210562613U CN201920896901.1U CN201920896901U CN210562613U CN 210562613 U CN210562613 U CN 210562613U CN 201920896901 U CN201920896901 U CN 201920896901U CN 210562613 U CN210562613 U CN 210562613U
- Authority
- CN
- China
- Prior art keywords
- shear key
- column
- node
- shear
- layer column
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Joining Of Building Structures In Genera (AREA)
Abstract
The utility model discloses a vertical dry-type connected node of prefabricated assembled frame post of area shear keyway, including rectangle basis, the reinforcing bar that pre-buries in the basis continues to connect the ware, the bottom sets up the first floor post on the basis, be cross or the pre-buried connecting piece of groined type, shear keyway subassembly, the bottom sets up upper strata post and the power consumption connecting piece at first floor post top surface, the cross-section of first floor post and the cross-section of upper strata post are square, the four corners on first floor post upper portion and the four corners of upper strata post lower part symmetry respectively are provided with square opening; the shear key groove assemblies are two groups and are respectively arranged at the connecting node of the upper-layer column and the first-layer column and the connecting node of the first-layer column and the foundation. High cost performance and convenient construction and installation. The node is provided with an embedded part in a prefabricated column, and the shearing resistance of the node is realized by arranging a shearing resistance key groove in a connecting surface; bending resistance and energy consumption of the column base connecting node are achieved by arranging the energy consumption connecting piece, and the interlayer connecting node is located at the position with smaller column bending moment and basically in an elastic state.
Description
Technical Field
The utility model relates to an assembly type concrete frame structure field, especially take vertical dry-type connected node of prefabricated assembly type frame post of keyway that shears.
Background
The fabricated concrete frame structure system is widely applied to fabricated buildings, the structural integrity and reliability of the fabricated concrete frame structure system are mainly realized through connection between prefabricated components, and the vertical connection of prefabricated columns is the key of the fabricated concrete frame structure.
The vertical connection of prefabricated post at present adopts steel sleeve grout to connect more, and the problem of existence is: firstly, under the action of earthquake, the node can have damage which is difficult to repair; secondly, the energy consumption of the node is mainly realized through the plastic deformation of the steel bar, and the energy consumption capability is poor; thirdly, the prefabricated column end reinforcing steel bars extend outwards to bring great inconvenience to template design, component prefabrication, transportation and installation, and the construction efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a take vertical dry-type connected node of prefabricated assembled frame post of keyway that shears solves that vertical post atress is unreasonable, the structural damage that the vertical connection of assembled concrete frame post exists is big, pass the power path is indefinite, the power consumption ability of node is limited, the efficiency of construction of assembled post is limited, the difficult prosthetic technical problem of loss appears.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a vertical dry-type connected node of prefabricated assembled frame post of area shear keyway, including rectangle basis, the reinforcing bar that pre-buries in the basis continues to connect the ware, the bottom sets up the first floor post on the basis, be cross or the pre-buried connecting piece of groined type, shear keyway subassembly, the bottom sets up upper strata post and the power consumption connecting piece at first floor post top surface, the cross-section of first floor post and the cross-section of upper strata post are square, the four corners on first floor post upper portion and the four corners of upper strata post lower part symmetry respectively are provided with square opening;
the shear key slot assemblies are divided into two groups and are respectively arranged at the connecting node of the upper-layer column and the first-layer column and the connecting node of the first-layer column and the foundation;
the embedded connecting piece is arranged at the lower part of the first-layer column and is vertical to the axis direction of the first-layer column, the embedded connecting piece comprises a transverse embedded pipe and a longitudinal embedded pipe, the end head of the transverse embedded pipe and the end head of the longitudinal embedded pipe both extend out of the first-layer column, and a third round hole for penetrating through the energy-consumption connecting piece is formed in the end heads; the bottom of the energy-consuming connecting piece is connected with the reinforcing steel bar coupler.
Further, the height of the first-layer column is greater than that of the upper-layer column.
Further, the first-layer columns and the upper-layer columns are the same in width.
Further, the shear keyway assembly comprises a first shear keyway plate and a second shear keyway plate;
the first shear key slot plate is square, a groove is formed in the center of the first shear key slot plate, first round holes for penetrating through bolts are formed in four corners of the square, and anchor bars or studs are further arranged on one side, embedded in concrete, of the first shear key slot plate;
the second anti-shear keyway plate is square, a bulge is arranged at the center of the second anti-shear keyway plate, second round holes for penetrating bolts are formed in four corners of the square, and anchor bars or studs are further arranged on one side of the second anti-shear keyway plate, which is embedded in the concrete;
after the first shear key slot plate is occluded with the second shear key slot plate, the circle center of the first round hole and the circle center of the second round hole are located on the same axis.
Further, the width of the first shear key slot plate is the same as that of the second shear key slot plate; the width of the first shear key groove plate is the same as that of the first-layer column.
Further, the depth of the groove is adapted to the height of the protrusion.
Furthermore, a gap filling material is also arranged between the first shear key groove plate and the second shear key groove plate; the joint filling material is high-strength epoxy resin or mortar.
Furthermore, the energy-consuming connecting piece comprises an energy-consuming connecting core rod, a steel sleeve sleeved outside the energy-consuming connecting core rod, a fastening nut and a base plate, wherein a mantle fiber is arranged on the energy-consuming connecting core rod, and the upper end face of the third round hole, the lower end face of the third round hole and the energy-consuming connecting core rod are fixed through the fastening nut.
Furthermore, a gap of 1-2mm is reserved between the energy-consuming connecting core rod and the steel sleeve.
Furthermore, the energy-consuming connecting piece adopts Q235 steel.
The beneficial effects of the utility model are embodied in:
1, the utility model provides a take vertical dry-type connected node of prefabricated assembled frame post of keyway that shears, simple structure, processing convenience, economy are feasible, sexual valence relative altitude, construction simple to operate.
2, the prefabricated assembled frame column vertical dry-type connecting node with the shear-resistant key groove provided by the utility model is characterized in that an embedded part is arranged in the prefabricated column, and the shear resistance of the node is realized by arranging the shear-resistant key groove in the connecting surface; bending resistance and energy consumption of the column base connecting node are achieved by arranging the energy consumption connecting piece, and the interlayer connecting node is located at the position with smaller column bending moment and basically in an elastic state. Reasonable stress, clear force transmission path and excellent anti-seismic performance.
3, the utility model discloses realize "curved separation of cutting", make the atress of node more reasonable, pass the power route more clear and definite to the power consumption performance ability of node has been improved, and prefabricated column tip does not have overhanging reinforcing bar simultaneously and can realize high-efficient assembly.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The primary objects and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the basic components of the present invention;
FIG. 2 is a schematic view of the energy-consuming connector of the present invention;
FIG. 3 is a plan view of a first shear key channel plate;
FIG. 4 is a schematic view of a shear key assembly in an assembled state;
fig. 5 is a schematic view of a node composition in embodiment 1 of the present invention;
FIG. 6 is a perspective view of embodiment 1;
3 FIG. 3 7 3 is 3 a 3 section 3 A 3- 3 A 3 of 3 FIG. 35 3; 3
FIG. 8 is a schematic view of the connection between the pre-buried connector and the energy consuming connector;
fig. 9 is a schematic view of a node composition according to embodiment 3 of the present invention;
3 FIG. 3 10 3 is 3 a 3 section 3 A 3- 3 A 3 of 3 FIG. 3 9 3; 3
FIG. 11 is a schematic view of the connection between the pre-buried connector and the energy consuming connector;
FIG. 12 is a schematic view of a shear key slot assembly;
fig. 13 is a schematic structural view of the embedded connector in embodiment 3.
Reference numerals: 1-foundation, 2-steel bar splicing device, 3-first-layer column, 4-embedded connector, 5-shear key slot assembly, 6-upper-layer column, 7-energy-consuming connector, 8-square opening, 9-third round hole, 10-first shear key slot plate, 11-second shear key slot plate, 12-first round hole, 13-second round hole, 14-energy-consuming connecting core rod, 15-steel sleeve and 16-base plate.
Detailed Description
The technical solutions of the present invention are described in detail below by way of examples, which are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but not for explaining the limitations of the technical solutions of the present invention.
Example 1
In order to reach "curved separation of cutting", the atress that makes the node is more reasonable, and it is more clear and definite to pass the power route to improved the power consumption ability of node, prefabricated tip does not have the purpose that overhanging reinforcing bar can realize high-efficient assembly simultaneously, the utility model provides a take vertical dry-type connected node of prefabricated assembled frame post of keyway that shears.
Specifically, as shown in fig. 1, including rectangle basis 1, the continuous ware 2 that connects of reinforcing bar of pre-buried in basis 1, the bottom sets up first floor post 3 on basis 1, be cross or the pre-buried connecting piece 4 of groined type, shearing keyway subassembly 5, the bottom sets up upper strata post 6 and the power consumption connecting piece 7 at first floor 3 top surface, first floor post 3 is the same with upper strata post 6's width, first floor post 3 highly is greater than upper strata post 6's height. The cross-section of the first-layer column 3 and the cross-section of the upper-layer column 6 are both square, and square openings 8 are symmetrically formed in the four corners of the upper portion of the first-layer column 3 and the four corners of the lower portion of the upper-layer column 6 respectively, so that the on-site installation is facilitated.
As shown in fig. 5, 6 and 7, the shear key slot assemblies 5 are provided in two groups and are respectively arranged at the connection node of the upper-layer column 6 and the first-layer column 3 and the connection node of the first-layer column 3 and the foundation 1. The connection mode well ensures node shear force transmission, the bending resistance and energy consumption of the column base connection node are realized by arranging the energy consumption connecting pieces 7 at the periphery, and the interlayer extension node of the prefabricated column is positioned at the position with smaller bending moment and basically in an elastic state and is connected by adopting bolts.
The embedded connecting piece 4 is arranged at the lower part of the first-layer column 3 and is vertical to the axis direction of the first-layer column 3, and the embedded connecting piece 4 comprises a transverse embedded pipe and a longitudinal embedded pipe. The parts of the transverse embedded pipes and the longitudinal embedded pipes, which are embedded in the concrete, are uniformly provided with studs along the surface. And the embedded connecting piece 4 and the concrete of the first-layer column 3 are ensured to form a good whole. Specifically, as shown in fig. 8, the embedded connector 4 is cross-shaped and includes two transverse embedded pipes and two longitudinal embedded pipes, two adjacent transverse embedded pipes are welded and fixed, and two adjacent longitudinal embedded pipes are welded and fixed.
The end of the transverse embedded pipe and the end of the longitudinal embedded pipe both extend out of the first-layer column 3, and a third round hole 9 for passing through an energy-consuming connecting piece 7 is formed in the ends; the bottom of the energy consumption connecting piece 7 is connected with the reinforcing steel bar coupler 2. The pre-buried connecting piece 4 can be formed by welding a square steel pipe, a rectangular steel pipe or a steel plate and is arranged in the middle of the cross section of the first-layer column 3 column.
As shown in fig. 3, the shear keyway assembly 5 includes a first shear keyway plate 10 and a second shear keyway plate 11; the first shear key slot plate 10 is square, a groove is arranged in the center of the first shear key slot plate 10, four corners of the square are provided with first round holes 12 for penetrating bolts, and one side of the first shear key slot plate 10, which is pre-embedded in concrete, is also provided with anchor bars or studs; the second anti-shear keyway plate 11 is square, and the center of the second anti-shear keyway plate 11 is provided with the arch, and four square bights are provided with the second round hole 13 that is used for passing the bolt, and one side that the second anti-shear keyway plate 11 is pre-buried in the concrete still is provided with anchor bar or peg.
As shown in fig. 4, after the first shear key groove plate 10 is engaged with the second shear key groove plate 11, the center of the first circular hole 12 and the center of the second circular hole 13 are located on the same axis. The width of the first shear key groove plate 10 is the same as that of the second shear key groove plate 11; the width of the first shear key groove plate 10 is the same as that of the first-tier column 3. The depth of the groove is matched with the height of the protrusion. A gap filling material is also arranged between the first shear key groove plate 10 and the second shear key groove plate 11; the joint filling material is high-strength epoxy resin or mortar. The shear-resistant key slot assembly 5 is a pre-buried steel plate with anchor bars, and the shear resistance of the connecting node can be well guaranteed.
As shown in fig. 2, the energy-consuming connecting member 7 includes an energy-consuming connecting core rod 14, a steel sleeve 15 sleeved outside the energy-consuming connecting core rod 14, a fastening nut and a backing plate 16, a mantle fiber is arranged on the energy-consuming connecting core rod 14, and the upper end surface of the third round hole 9, the lower end surface of the third round hole 9 and the energy-consuming connecting core rod 14 are fixed by the fastening nut. A gap of 1-2mm is reserved between the energy-consuming connecting core rod 14 and the steel sleeve 15. The energy consumption connecting piece 7 is made of Q235 steel. The steel sleeve 15 is used for preventing the buckling of the energy-consuming connecting core rod 14 and realizing the consistency of tension and compression stress and energy consumption. The energy consumption connecting piece 7 reduces the yield point thereof under the condition of ensuring the connecting strength, and has better energy consumption capability.
The construction method of the prefabricated frame column vertical dry type connecting node with the shear key groove comprises the following specific steps:
step one, installing a mold and pouring a prefabricated column:
s1, installing a first-layer column 3 mould, arranging a pre-buried connecting piece 4 in the mould, arranging a first shear key groove plate 10 at the top end mould of the first-layer column 3, and arranging a second shear key groove plate 11 at the bottom of the first-layer column 3;
s2, arranging a square opening 8 in the top end die;
s3, installing the upper-layer column 6 mould and arranging a second shear-resistant keyway plate 11 at the bottom of the upper-layer column;
s4, arranging a square opening 8 at the bottom of the upper-layer column 6;
step two, formwork erecting and foundation pouring 1:
when a formwork is erected, a first shear key groove plate 10 is arranged at the top of a foundation 1, and a steel bar connector 2 connected with an energy consumption connector 7 is arranged in the foundation 1;
step three, coating high-strength epoxy resin on the surface of the first shear key groove plate 10 of the foundation 1;
step four, installing a first-layer column 3, adjusting verticality and installing a column base:
the lower end of the energy-consuming connecting core rod 14 sequentially penetrates through a third round hole 9 and a steel sleeve 15 on the embedded connecting piece 4 and is connected with the steel bar connector 2 in the foundation 1, and the upper end of the energy-consuming connecting core rod 14 is fixed on the embedded connecting piece 4 through a nut; the column base node between the first-layer column 3 and the foundation 1 is used in cooperation with the shearing-resistant key groove assembly 5 through the energy-consuming connecting piece 7, dry connection of the connecting portion is achieved, and the column connecting node is used in cooperation with the shearing-resistant key groove assembly 5 through the bolt, so that dry connection of the connecting portion is achieved, and assembly is facilitated.
Fifthly, coating high-strength epoxy resin on the surface of the first shear key slot plate 10 at the top of the first-layer column 3;
and sixthly, installing the upper-layer column 6, after the first shear key groove plate 10 is occluded with the second shear key groove plate 11, enabling the circle center of the first circular hole 12 and the circle center of the second circular hole 13 to be located on the same axis, adjusting the verticality, enabling bolts to respectively penetrate through the first circular hole 12 and the second circular hole 13, screwing and fixing, and completing connection of the first-layer column 3 and the upper-layer column 6.
The nut can adopt double nuts or locknuts.
The utility model provides a take vertical dry-type connected node of prefabricated assembled frame post of keyway that shears, the cylinder structure is novel, and characteristics are outstanding, accept rationally, pass power and definitely have fine spreading value. The first shear key slot plate 10 is connected with the second shear key slot plate 11 in an occlusion manner, and the specific embedded positions of the first shear key slot plate 10 and the second shear key slot plate 11 can be flexibly arranged.
The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be considered by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. Take vertical dry-type connected node of prefabricated assembled frame post of keyway that shears, its characterized in that: the steel bar splicing device comprises a rectangular foundation (1), a steel bar splicing device (2) embedded in the foundation (1), a first-layer column (3) with the bottom arranged on the foundation (1), a cross-shaped or groined embedded connecting piece (4), a shear-resistant key groove assembly (5), an upper-layer column (6) with the bottom arranged on the top surface of the first-layer column (3) and an energy-consuming connecting piece (7), wherein the cross section of the first-layer column (3) and the cross section of the upper-layer column (6) are both square, and square notches (8) are symmetrically arranged at four corners of the upper part of the first-layer column (3) and four corners of the lower part of the upper-layer column (6);
the shear key slot assemblies (5) are divided into two groups and are respectively arranged at the connecting node of the upper-layer column (6) and the first-layer column (3) and the connecting node of the first-layer column (3) and the foundation (1);
the embedded connecting piece (4) is arranged at the lower part of the first-layer column (3) and is perpendicular to the axis direction of the first-layer column (3), the embedded connecting piece (4) comprises a transverse embedded pipe and a longitudinal embedded pipe, the end head of the transverse embedded pipe and the end head of the longitudinal embedded pipe both extend out of the first-layer column (3), and a third round hole (9) for penetrating through the energy-consuming connecting piece (7) is formed in the end head; the bottom of the energy consumption connecting piece (7) is connected with the reinforcing steel bar splicing device (2).
2. The prefabricated assembled frame column vertical dry-type connection node with shear key grooves according to claim 1, wherein the height of the first-layer column (3) is greater than that of the upper-layer column (6).
3. The prefabricated frame column vertical dry connecting node with shear key groove according to claim 1, wherein the shear key groove assembly (5) comprises a first shear key groove plate (10) and a second shear key groove plate (11);
the first shear key groove plate (10) is square, a groove is formed in the center of the first shear key groove plate (10), first round holes (12) for allowing bolts to penetrate through are formed in four corners of the square, and anchor bars or studs are further arranged on one side, embedded in concrete, of the first shear key groove plate (10);
the second anti-shear keyway plate (11) is square, a bulge is arranged at the center of the second anti-shear keyway plate (11), second round holes (13) for penetrating bolts are formed in four corners of the square, and anchor bars or studs are further arranged on one side, pre-buried in concrete, of the second anti-shear keyway plate (11);
after the first shear key slot plate (10) is occluded with the second shear key slot plate (11), the circle center of the first round hole (12) and the circle center of the second round hole (13) are located on the same axis.
4. The prefabricated frame column vertical dry-type connection node with shear key grooves according to claim 3, wherein the width of the first shear key groove plate (10) is the same as the width of the second shear key groove plate (11); the width of the first shear key groove plate (10) is the same as that of the first-layer column (3).
5. A prefabricated frame column vertical dry-type connection node with shear key slots according to claim 3, wherein the depth of the groove is adapted to the height of the protrusion.
6. The prefabricated assembled frame column vertical dry type connection node with shear key grooves according to claim 3, wherein a gap filling material is further provided between the first shear key groove plate (10) and the second shear key groove plate (11); the joint filling material is high-strength epoxy resin or mortar.
7. The vertical dry-type connection node of the prefabricated frame column with the shear key slot according to claim 1, wherein the energy-consuming connector (7) comprises an energy-consuming connection core rod (14), a steel sleeve (15) sleeved outside the energy-consuming connection core rod (14), a fastening nut and a backing plate (16), a threading is arranged on the energy-consuming connection core rod (14), and the upper end face of the third circular hole (9), the lower end face of the third circular hole (9) and the energy-consuming connection core rod (14) are fixed through the fastening nut.
8. The prefabricated assembled frame column vertical dry type connection node with shear key grooves according to claim 7, wherein a gap of 1-2mm is left between the energy-consuming connection core rod (14) and the steel sleeve (15).
9. The prefabricated assembled frame column vertical dry-type connection node with shear key grooves according to claim 1, wherein the energy-consuming connectors (7) are made of Q235 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920896901.1U CN210562613U (en) | 2019-06-14 | 2019-06-14 | Vertical dry-type connecting node of prefabricated assembled frame post of keyway that shears in area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920896901.1U CN210562613U (en) | 2019-06-14 | 2019-06-14 | Vertical dry-type connecting node of prefabricated assembled frame post of keyway that shears in area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210562613U true CN210562613U (en) | 2020-05-19 |
Family
ID=70630898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920896901.1U Expired - Fee Related CN210562613U (en) | 2019-06-14 | 2019-06-14 | Vertical dry-type connecting node of prefabricated assembled frame post of keyway that shears in area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210562613U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258790A (en) * | 2019-06-14 | 2019-09-20 | 中国建筑股份有限公司 | The vertical dry type connecting node of prefabricated assembled frame column with shearing resistance keyway and engineering method |
| CN114909011A (en) * | 2022-05-11 | 2022-08-16 | 重庆大学 | Floor damage-free replaceable assembled beam column node |
-
2019
- 2019-06-14 CN CN201920896901.1U patent/CN210562613U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110258790A (en) * | 2019-06-14 | 2019-09-20 | 中国建筑股份有限公司 | The vertical dry type connecting node of prefabricated assembled frame column with shearing resistance keyway and engineering method |
| CN110258790B (en) * | 2019-06-14 | 2024-04-09 | 中国建筑股份有限公司 | Vertical dry type connecting node with shear key groove for prefabricated frame column and construction method |
| CN114909011A (en) * | 2022-05-11 | 2022-08-16 | 重庆大学 | Floor damage-free replaceable assembled beam column node |
| CN114909011B (en) * | 2022-05-11 | 2024-06-11 | 重庆大学 | Replaceable assembled beam column node free of floor damage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2020100507A4 (en) | Prefabricated Concrete Frame Beam-Column Connection Joint With Steel Strands Anchored | |
| CN102086677A (en) | Prefabricated reinforced concrete beam and connection joint of reinforced concrete column and beam | |
| CN210562613U (en) | Vertical dry-type connecting node of prefabricated assembled frame post of keyway that shears in area | |
| CN114508175A (en) | Connecting joint and connecting method for assembled reinforced concrete prefabricated column and beam | |
| CN210562612U (en) | Hinged nondestructive energy-consumption prefabricated frame beam-column joint | |
| CN110439142A (en) | A kind of assembly concrete shear wall and construction method with H profile steel diagonal brace | |
| CN106760036A (en) | A kind of prefabricated steel combined concrete shear wall | |
| CN111648467B (en) | High-position splicing energy-consumption beam column node and manufacturing method | |
| CN110924522B (en) | Steel plate interface connecting structure and connecting method for reinforced concrete beam and column | |
| CN110258790B (en) | Vertical dry type connecting node with shear key groove for prefabricated frame column and construction method | |
| CN218622790U (en) | Antidetonation coincide wall | |
| CN114753489B (en) | Prefabricated beam column node and novel assembled reinforced concrete building thereof | |
| CN110130485A (en) | A kind of prefabricated assembled bean column node and its assembly method with tooth plate | |
| CN213898249U (en) | Reinforced structure of newly-added concrete beam | |
| CN115506589A (en) | Assembled unbonded prestressed 3D printed concrete beam and construction process thereof | |
| CN113006274A (en) | Novel prefabricated frame construction beam column dry-type connected node | |
| CN109898713B (en) | Quick-assembly full-bolt connection semi-rigid corrugated shear connector | |
| CN209742074U (en) | assembled frame beam column connected node | |
| CN113638506A (en) | Precast concrete ground beam-frame column connecting joint and construction method thereof | |
| CN210002552U (en) | Beam column joint with additional rib | |
| CN112196141A (en) | Bolt rib mixed drawknot steel plate concrete combined shear wall and construction method | |
| CN202989914U (en) | Pre-tensioning method prestress guard pile | |
| CN217420236U (en) | Semi-rigid assembly type steel coupling beam | |
| CN216156825U (en) | Solve beam column connected node that sloping reinforcing bar anchored length is not enough in post | |
| CN211421381U (en) | Primary and secondary beam structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200519 Termination date: 20210614 |