CN113374073B - Prefabricated concrete structure beam column connecting node, connecting method and repairing method - Google Patents
Prefabricated concrete structure beam column connecting node, connecting method and repairing method Download PDFInfo
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- CN113374073B CN113374073B CN202110376256.2A CN202110376256A CN113374073B CN 113374073 B CN113374073 B CN 113374073B CN 202110376256 A CN202110376256 A CN 202110376256A CN 113374073 B CN113374073 B CN 113374073B
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
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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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/21—Connections specially adapted therefor
- E04B1/215—Connections specially adapted therefor comprising metallic plates or parts
-
- 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
- E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
- E04B1/20—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
- E04B1/22—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material with parts being prestressed
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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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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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
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
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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
-
- 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
-
- 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
- E04H9/025—Structures with concrete columns
Abstract
The invention discloses a prefabricated concrete structure beam-column connecting node, a connecting method and a repairing method, wherein the prefabricated concrete structure beam-column connecting node comprises a node plate, prefabricated beams connected to the left side and the right side of the node plate, an upper layer prefabricated column connected to the upper end of the node plate and a lower layer prefabricated column connected to the lower end of the node plate; a connecting block and a groove-shaped joint are arranged between the gusset plate and the precast beam; the gusset plate, the connecting block and the groove-shaped joint are connected into a whole through the main steel stranded wire. The precast concrete structure beam column connecting node has the characteristic of self-resetting, and has small residual deformation after earthquake so as to ensure that the structure can quickly recover the building use function after the earthquake. Meanwhile, the damage of the structure is limited in the connecting block which can be easily replaced or repaired, so that the repair after the earthquake is rapid and convenient. In addition, the structure is totally composed of detachable parts, and the sustainable development performance of the building can be improved by conveniently detaching and recycling the prefabricated parts.
Description
Technical Field
The invention is suitable for the technical field of civil construction, and relates to a beam-column connecting node and a method of a precast concrete structure.
Background
Since 2011 clearly proposes 'actively promoting building industrialization', the national institutes have taken a policy of promoting building industrialization for many times. Under the high importance of the Party center and the national institutes, the construction industry of China begins to develop towards the directions of greenization, industrialization, informatization and the like, and the novel construction industrialization which takes the assembly type construction as the key point is the key point of the current development. The precast concrete frame structure is one of the most common and widely applied assembled structural systems, and has the advantages of reliable function, high durability, easiness in repair, rapidness in construction, reasonable cost, convenience in batch production and the like.
In earthquake-less areas, prefabricated concrete structures are gradually replacing traditional cast-in-place concrete systems.
However, the existing precast concrete structure has the defects of poor integrity and weak earthquake resistance, and the use of the existing precast concrete structure in areas with frequent earthquakes is limited. In the precast concrete structure, the connection mode of columns, beams and floor slabs, particularly the connection mode of beam-column joints is a core factor influencing the seismic performance of the whole structure.
Therefore, a new precast concrete structure beam-column connection node having a strong shock resistance is required to solve the above problems.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a beam-column connecting node, a connecting method and a repairing method of a detachable precast concrete structure, which have seismic recoverability and reliable performance, aiming at the defect of weak seismic performance of the node in the existing precast concrete structure.
In order to achieve the purpose, the invention adopts the following technical scheme:
a beam column connecting node of a precast concrete structure is characterized by comprising a node plate, precast beams connected to the left side and the right side of the node plate, an upper precast column connected to the upper end of the node plate and a lower precast column connected to the lower end of the node plate; a connecting block and a groove-shaped joint are arranged between the gusset plate and the precast beam; the connecting block is a precast concrete member; the groove-shaped joint is formed by wrapping a groove-shaped joint steel shell on the outer side of a groove-shaped joint precast concrete part; the gusset plate, the connecting block and the groove-shaped joint are connected into a whole through a main steel strand; the precast beam is formed by wrapping a precast beam shell on one side of a precast beam concrete part; the precast beam is connected with the groove-shaped joint through a steel bolt; the upper end of the lower prefabricated column extends out of the steel bar to penetrate through the gusset plate and is connected with the upper prefabricated column; non-adhesive secondary steel strands are distributed from one prefabricated beam end to the other prefabricated beam end; energy-consuming steel bars are poured and fixed among the gusset plates, the connecting blocks and the groove-shaped joints.
Furthermore, all the sections of the energy-consuming reinforcing steel bar are connected by using mechanical sleeves, so that the energy-consuming reinforcing steel bar can be replaced conveniently after being damaged.
The invention also discloses a beam-column connecting method of the precast concrete structure, which comprises the following concrete steps:
1) energy-consuming steel bars are placed in preformed holes in the gusset plates, the connecting blocks and the groove-shaped joints, and grouting is carried out to ensure the bonding property between the steel bars and the concrete;
2) arranging unbonded prestressed main steel strands in reserved channels in the gusset plates, the connecting blocks and the groove-shaped joints, and then tensioning and anchoring prestress at two ends;
3) mounting a lower prefabricated column, and then connecting the combined part obtained in the first two steps with the lower prefabricated column;
4) connecting the precast beam with the groove-shaped part by using a steel bolt;
5) installing a prefabricated column;
6) and installing the unbonded secondary steel strand.
Furthermore, the gusset plate, the connecting block, the groove-shaped joint, the non-connection prestress steel strand and the energy-consuming steel bar are assembled in a factory, and the prestress is tensioned in the factory, so that the field assembly process and cost are reduced, and the assembly quality is convenient to control.
The invention also discloses a post-earthquake repairing method of the beam-column connecting node of the precast concrete structure, which comprises the following specific steps:
1) supporting the precast beam by using a jack;
2) dismantling the damaged connecting blocks and energy-consuming reinforcing steel bars;
3) installing a new connecting block;
4) connecting new steel bars by using a mechanical sleeve;
5) the prestress condition of the steel strand is checked again;
6) and removing the jack, and restoring the structure to the initial state.
Has the advantages that: the beam column connecting node of the precast concrete structure has the following advantages:
1. the earthquake resistance is strong. The energy dissipation reinforcing bar can effectively dissipate seismic energy in an earthquake. Gaps among the connecting blocks, the node plates and the groove-shaped joints enhance the energy consumption capacity of the structure by allowing the connecting blocks to vibrate properly, so that the displacement of the components is concentrated in the gaps among the connecting blocks, the node plates and the groove-shaped joints. The main prestressed steel strand enables the structure to have self-resetting performance, and when the earthquake is large and the main prestressed steel strand yields, the secondary steel strand can effectively supplement the self-resetting performance for the structure.
2. Seismic recoverability. The concrete of the node plate, the connecting block and the groove-shaped joint are completely separated and are connected with the unbonded prestressed main steel strand only through the energy-consuming steel bars. Separating the connector block from the rest minimizes the residual deformation of the structure by allowing vibration of the connector block, concentrating its damage in a connector block that can be easily replaced. Meanwhile, the novel structural system has good energy dissipation capacity, and the self-resetting performance of the main steel strand and the secondary steel strand effectively reduces the residual deformation of the structure after an earthquake. Therefore, the newly proposed structural system can relieve the problem that the use function of the precast concrete structure is limited after earthquake, thereby achieving the purposes of shortening the downtime and reducing the economic loss.
3. The construction process is accelerated. Compared with the traditional construction method, the assembly method with the novel structure provided by the invention can enable the construction process to be more convenient and quicker, effectively shorten the construction period and reduce the construction cost. Because the node plates, the connecting blocks, the groove-shaped joints and the main steel strands can be combined in a factory, all components can be transported in four parts when transported to a construction site from a concrete prefabricating factory. Because the prestress of the main steel strand is applied in a factory, and the secondary steel strand is used as a standby component for improving the structural performance under the action of a larger earthquake and does not need to be subjected to prestress tensioning, the prestress tensioning equipment which is expensive and complicated to operate is not needed in a construction site. In addition, the precast beam is short in length, convenient to transport and install, and does not need a crane with large hoisting capacity to hoist on site.
4. The repair speed is high and the cost is low. The repair level of the novel node is mainly determined by seismic intensity. Under the action of the medium shock, the prestressed main steel strand can effectively reduce the residual deformation of the structure, and the structure only needs minor repair. Under the action of a large earthquake, the structural damage is limited in the replaceable connecting block and the section of energy-consuming steel bar. In this case, the broken connection block and the energy consumption steel bar can be replaced very conveniently.
5. And (4) detachability. The precast concrete beam column connection node of the present invention provides an innovative construction means which allows the building structure to be dismantled or rebuilt without additional cost. Furthermore, by connecting the precast concrete slab to the new node with a rear anchoring shear connection, the structure can be completely dismantled. Such a system can increase the sustainability of the concrete structure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a diagram illustrating an effect of a beam-column connection node of a precast concrete structure to which the present invention is applied.
Fig. 2 is an assembly view illustrating a beam-column connection node of a precast concrete structure according to the present invention.
Fig. 3 is a detailed view of a channel joint of a beam-column connection node of a precast concrete structure according to the present invention.
Figure 4 is an assembled schematic view of the channel joint of figure 3.
Fig. 5 is a detailed view of a precast beam of the precast concrete structure beam-column connection node of the present invention.
Fig. 6 is an assembly view of the precast girders of fig. 5.
In the figure: 1 gusset plate, 2 connecting blocks, 3 groove joints, 4 energy-consuming steel bars, 5 main steel strands, 6 lower-layer prefabricated columns, 7 prefabricated beams, 8 upper-layer prefabricated beams, 9 unbonded secondary steel strands, 10 steel bolts, 11 groove joint prefabricated concrete parts, 12 groove joint steel shells, 13 prefabricated beam concrete parts and 14 prefabricated beam steel shells.
Detailed Description
The invention is further illustrated with reference to the following figures and specific examples. It is to be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention, which is to be given the full breadth of the appended claims and any and all equivalent modifications thereof which may occur to those skilled in the art upon reading the present specification.
As shown in fig. 1, is an intermediate crossover point in a precast concrete frame structure. Referring to fig. 2 to 6, the precast concrete structure beam-column connection node of the present invention includes segmented precast members (including precast beams 7, lower precast columns 6, upper precast columns 8, node plates 1, connection blocks 2, channel-shaped joints 3, unbonded prestressed main steel strands 5, unbonded secondary steel strands 9, and energy-consuming steel bars 4).
The gusset plate 1, the connecting block 2, the groove-shaped joint 3, the energy-consuming steel bar 4 and the unbonded prestressed main steel strand 5 are assembled in a factory; the energy-consuming steel bars 4 and the main steel stranded wires 5 penetrate through the gusset plate 1, the connecting block 2 and the groove-shaped joint 3; the sections of the energy-consuming steel bars 4 are connected in a mechanical sleeve mode, and grouting is performed in a reserved hole channel after installation so as to ensure the bonding performance between the steel bars and concrete; the two ends of the unbonded prestressed main steel strand 5 adopt a post-tensioning method to stretch prestress and are fixed on the two sides of the groove-shaped joint 3. When the prefabricated beam is assembled on site, the prefabricated beam is assembled according to the sequence of the lower prefabricated column 6, the factory combination part, the prefabricated beam 7, the upper prefabricated column 8 and the unbonded secondary steel strand 9. In order to ensure the stress performance of the node, the groove-shaped joint 3 is formed by wrapping a groove-shaped joint steel shell 12 on the outer side of a groove-shaped joint precast concrete part 11, the precast beam 7 is formed by wrapping a precast beam shell 14 on one side of a precast beam concrete part 13, and the groove-shaped joint and the precast beam are connected by adopting a steel bolt 10.
The functions of the components in the precast concrete beam-column connecting joint are as follows:
1. when the structure is damaged under the action of an earthquake, the yield of the energy consumption steel bar 4 and the concrete crack at the connecting block 2 (the weakest part of the structure) occur, and the energy consumption steel bar 4 and the connecting block 2 are the source of the energy dissipation capacity of the structure. In other words, the greater the lateral displacement of the frame, the wider the area of distribution of the yield and cracking of the bars due to the greater energy dissipated by the structure.
2. The unbonded prestressed main steel strands 5 provide the node with self-resetting properties, thereby minimizing the residual deformation of the structure after an earthquake.
3. When the interlayer displacement of the structure exceeds the elastic limit, the unbonded secondary steel strand 9 is activated to play a role of supplementing self-resetting, improve the horizontal rigidity of the structure and reduce the residual deformation of the structure. When the stress of the primary steel strand 5 exceeds its yield strength, plastic deformation will occur, resulting in an increase in the residual deformation of the structure, at which time the secondary steel strand 9 may act as a source of potential supplemental restoring force for the structure. After the primary steel strand 5 reaches its load bearing limit, the secondary steel strand 9 generates a counter-restoring force to help the structure return to its original position, exerting its self-restoring function.
The invention relates to a precast concrete structure beam column connecting method, which comprises the following specific steps:
1) energy-consuming steel bars 4 are placed in reserved channels in the gusset plate 1, the connecting block 2 and the groove-shaped joint 3, and grouting is carried out to ensure the bonding performance between the steel bars and concrete;
2) arranging unbonded prestressed main steel strands 5 in reserved channels in the gusset plate 1, the connecting block 2 and the groove-shaped joint 3, and then tensioning and anchoring prestress at two ends;
3) mounting a lower prefabricated column 6, and then connecting the combined part obtained in the first two steps with the lower prefabricated column 6;
4) connecting the precast girders 7 with the trough-shaped section 3 using steel bolts 10;
5) installing a prefabricated column 8;
6) and installing the unbonded secondary steel strand 9.
The precast concrete beam column connecting node enables a traditional easily-obtained precast concrete structure to have strong anti-seismic performance. In practical engineering, the post-seismic performance of a structure is as important as the performance during an earthquake. The invention not only reduces the damage degree of the structure after the earthquake, but also limits the structure in the replaceable component, thereby effectively reducing the repair cost.
The invention relates to a post-earthquake repairing method for a beam-column connecting node of a precast concrete structure, which comprises the following steps of:
1) the precast beams 7 are supported by using jacks;
2) dismantling the damaged connecting block 2 and the damaged energy-consuming steel bar 4;
3) installing a new connecting block 2;
4) connecting a new energy consumption reinforcing steel bar 4 by using a mechanical sleeve;
5) the prestress condition of the main steel strand 5 is checked again;
6) and removing the jack, and restoring the structure to the initial state.
Claims (7)
1. A beam column connecting node of a precast concrete structure is characterized by comprising a node plate (1), precast beams (7) connected to the left side and the right side of the node plate, an upper precast column (8) connected to the upper end of the node plate and a lower precast column (6) connected to the lower end of the node plate; a connecting block (2) and a groove-shaped joint (3) are arranged between the gusset plate and the precast beam; the connecting block (2) is a precast concrete member; the groove-shaped joint (3) is formed by wrapping a groove-shaped joint steel shell (12) on the outer side of a groove-shaped joint precast concrete part (11); the gusset plate (1), the connecting block (2) and the groove-shaped joint (3) are connected into a whole through a main steel strand (5); the precast beam (7) is formed by wrapping a precast beam shell (14) at one side of a precast beam concrete part (13); the precast beam (7) is connected with the groove-shaped joint (3) through a steel bolt (10); the upper end of the lower prefabricated column (6) extends out of a steel bar to penetrate through the gusset plate (1) and is connected with the upper prefabricated column (8); unbonded secondary steel stranded wires (9) are distributed from one side of the precast beam end to the other side of the precast beam end; energy-consuming steel bars (4) are poured and fixed among the gusset plates (1), the connecting blocks (2) and the groove-shaped joints (3).
2. A precast concrete structure beam column connection node according to claim 1, wherein the main steel strand (5), passing through the node plate (1), the connection block (2) and the channel joint (3), is prestressed by post-tensioning, and both ends are fixed to the outside of the channel joint (3) at both sides of the node.
3. A precast concrete structure beam column connection node according to claim 1, wherein the node plate (1) has openings on its cross section reserved with the main steel strand (5) and the secondary steel strand (9) through the energy dissipation steel bar (4).
4. A precast concrete structure beam column connection node according to claim 1, wherein the energy dissipation reinforcement (4) is provided in one section in each of the node plate (1), the connection block (2) and the channel joint (3), and the sections of the energy dissipation reinforcement (4) provided in sections are connected using mechanical sleeves.
5. A precast concrete structure beam column connecting method using a precast concrete structure beam column connecting node according to any one of claims 1 to 4, comprising the steps of:
1) energy-consuming steel bars (4) are placed in reserved energy-consuming steel bar mounting pore channels in the gusset plate (1), the connecting block (2) and the groove-shaped joint (3), and grouting is carried out to ensure the bonding performance between the steel bars and concrete;
2) arranging unbonded prestressed main steel strands (5) in reserved main steel strand mounting pore channels in the gusset plate (1), the connecting block (2) and the groove-shaped joint (3), and then tensioning prestress and anchoring at two ends by using a post-tensioning method;
3) mounting a lower-layer prefabricated column (6), and then connecting the combined part obtained in the previous two steps with the lower-layer prefabricated column (6);
4) connecting the precast beam (7) with the groove-shaped joint (3) by using a steel bolt (10);
5) mounting an upper prefabricated column (8);
6) and installing the unbonded secondary steel strand (9).
6. A method for connecting a precast concrete structure beam column according to claim 5, wherein the gusset plate, the connecting block, the channel joint, the non-connecting prestressed steel strand, and the energy consuming reinforcing bar are assembled at a factory, and the prestress is tensioned at the factory.
7. A method for repairing a beam-column connection node of a precast concrete structure according to any one of claims 1 to 4 after an earthquake, comprising the steps of:
1) The precast beam (7) is supported by using a jack;
2) Dismantling the damaged connecting block (2) and the damaged energy-consuming steel bar (4);
3) installing a new connecting block (2);
4) Connecting new energy-consuming steel bars (4) by using a mechanical sleeve;
5) The stress condition of the unbonded prestressed main steel strand (5) is checked again;
6) And removing the jack, and restoring the structure to the initial state.
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| CN115110825A (en) * | 2022-04-20 | 2022-09-27 | 重庆大学 | Detachable prefabricated reinforced concrete beam-steel column connecting node and repairing method thereof |
| CN115198882B (en) * | 2022-08-25 | 2024-03-29 | 金耀 | Assembled frame structure and construction method thereof |
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| JP2009299277A (en) * | 2008-06-10 | 2009-12-24 | Taisei Corp | Concrete member joining method |
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| CN108842911A (en) * | 2018-05-31 | 2018-11-20 | 南京东南建筑机电抗震研究院有限公司 | Assembled Self-resetting prestressed concrete frame SMA energy dissipation node |
| CN109235681A (en) * | 2018-08-27 | 2019-01-18 | 东南大学 | A kind of low damage node of assembled Self-resetting prestressed concrete frame mild-steel energy-consumption |
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|---|---|---|---|---|
| JP2009299277A (en) * | 2008-06-10 | 2009-12-24 | Taisei Corp | Concrete member joining method |
| JP2011169015A (en) * | 2010-02-18 | 2011-09-01 | Yoshinori Yamauchi | Base-isolated structure of reinforced concrete building |
| CN108842911A (en) * | 2018-05-31 | 2018-11-20 | 南京东南建筑机电抗震研究院有限公司 | Assembled Self-resetting prestressed concrete frame SMA energy dissipation node |
| CN108755975A (en) * | 2018-07-13 | 2018-11-06 | 大连理工大学 | A kind of the assembled connecting node and construction method of replaceable Self-resetting |
| CN109235681A (en) * | 2018-08-27 | 2019-01-18 | 东南大学 | A kind of low damage node of assembled Self-resetting prestressed concrete frame mild-steel energy-consumption |
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