CN106013432B - A kind of high ductility prefabricated integral frame interior joint connection structure and construction method - Google Patents
A kind of high ductility prefabricated integral frame interior joint connection structure and construction method Download PDFInfo
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- CN106013432B CN106013432B CN201610349356.5A CN201610349356A CN106013432B CN 106013432 B CN106013432 B CN 106013432B CN 201610349356 A CN201610349356 A CN 201610349356A CN 106013432 B CN106013432 B CN 106013432B
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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
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
It include prefabricated post and precast beam the invention discloses a kind of high ductility prefabricated integral frame interior joint connection structure and construction method, the component of use.The column of assembly concrete frame structure-column connection node is attached at every layer of inflection point or every two layers of inflection point using grout sleeve slip casting connection method；The connection of beam column interior joint is anchored using node reserves duct grouting, and the U-shaped muscle of top tension reinforcement and lower part passes through reserving hole channel and is in the milk, in overlapping beam-ends using the cast-in-place connection for realizing beam column of engineering fiber cement composites.The present invention is applied in prefabricated integral frame structure, realizes the aseismatic design concept of " strong column and weak beam ", " strong shear capacity and weak bending capacity " and " the strong weak component of node ", improves the anti-seismic performance of assembly concrete frame structure；Meanwhile vertical member is connected using grout sleeve, and it is convenient and efficient, accelerate speed of application.
Description
Technical field
The invention belongs to structural engineering field, it is related to a kind of high ductility prefabricated integral frame interior joint connection structure and applies
Work method is mainly used in prefabricated integral frame structure.
Background technique
The building trade of China is a time-honored conventional industries, construction industry not only to the contribution of national economy increasingly
It highlights, and in promoting employment, other aspects such as Industrial Linkage have also played huge effect.
However, with the development of society, the more and more contradictions of building trade have highlighted: building trade energy consumption is excessively high,
The filthy phenomenon in construction site is very universal, and construction quality is also difficult to ensure, labor cost goes up etc..Various these
Phenomenon, illustrates more with traditional people, and the building trade of inefficient extensive construction is hard to carry on.In recent years, country and ground
Side all starts to carry forward vigorously building industrialization and housing industrialization, makes great efforts to promote Residential structure upgrading and adjustment.
So-called housing industrialization is exactly in plant produced precast concrete, then by automobile, the machinery such as crane are set
Complete assembled in received shipment to construction site.House is built by industrialized production method, is that mechanization degree is not high and extensive style
The inevitable requirement of the production method upgrading of production.Compared to traditional architecture, prefabrication has the advantages that significant:
Prefabricated components industrialized production；Site operation is convenient, and construction speed is fast；Environment-friendly and energy-saving emission-reduction is conducive to sustainable development；It is economical
Remarkable benefit.The Green Development requirement that prefabricated assembled concrete structure is advantageously implemented " four sections, one environmental protection " is promoted, is realized low
Energy consumption, low emission building course, the sound development of China's building trade can be promoted, realize scheduled target for energy-saving and emission-reduction,
It is the developing direction of China's future architecture.
Frame structure is the most widely used structural system, and itself and shear wall structure, tube structure etc. can also combine
At shear force of frame wall system, frame-tube system.Therefore, prefabricated assembly structural system is promoted, research precast frame beam column connects
It is very necessary to connect mode.It is well known that frame structure can overall work, being reliably connected very between frame column and Vierendeel girder
It is crucial.Conventional concrete construction is since concrete cast-in-situ, node region steel bar stress are continuously arranged, as long as configuring reasonable steel
Muscle is generally not in continuous damage between component.But during the practice of construction of precast concrete, prefabricated components
The construction positioning of junction is not easy, therefore reduces speed of application and efficiency；For precast concrete, the company of component
Whether be key point that can total play design function, and usually precast construction junction if connecing quality and can be guaranteed
Shear-carrying capacity and ductility it is poor, the weak part in structural system is easily become, so that the safety to total is made
At threat；Existing some research achievements also indicate that, the anti-seismic performance and cast-in-place concrete structure of fabricated assembly overall structure
Compared to poor, so the anti-seismic performance for how further increasing fabricated assembly overall structure is still worth carrying out deep grind
Study carefully.
The bean column node and near zone of frame structure will bear very big internal force, existing assembled under geological process
In frame structure interconnection technique scheme, the big more options in node area are cast-in-place at the construction field (site).Since new-to-old concrete interface bonding is strong
Degree is insufficient, inevitably results in beam-ends insufficient rigidity, weakens the ductility and bearing capacity and node district concrete site operation of node
Bring is inconvenient, and new-to-old concrete interface is caused remove too early or node premature failure, can not achieve " strong column and weak beam ", " by force
Cut weak curved " and " the strong weak component of node " aseismic design concept and requirement.
ECC (Engineered Cementitious Composites) material is a kind of new type water with superpower toughness
Then cement-based composite material, the material are added synthetic fibers and are formed using cement and fine sand as filler.Existing research achievement table
Bright, the ultimate tensile strength value of the material can stably reach 3%-5%, 100~300 times of left sides of about common concrete material
The right side is 5~10 times or so of reinforcing bar.ECC material not only has the toughness of superelevation, the characteristics of stitching stable state cracking, in safety more
Property, durability, applicability etc. have excellent performance, can well solve conventional concrete due to fragility, weak drawing
Many disadvantages caused by stretching property.ECC has stronger energy absorption capability simultaneously, and higher shearing strength is also anti-for structure
Shake design provides new selection.Again since the price of ECC is relatively high, concrete is integrally replaced to be used to build ECC material
Structure be clearly it is uneconomic also It is not necessary to.In prefabricated integral frame structure, the superiority of ECC material can be made full use of
Can, it is substituted concrete and is used for key force part and connecting portion at node, to improve prefabricated integral frame structure
Overall performance and anti-seismic performance.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention provides a kind of easy for construction, scheme conjunction
Manage, can be improved the interior joint connection structure and construction method of prefabricated integral frame structural seismic performance.
Technical solution: to achieve the above object, the present invention provides a kind of high ductility prefabricated integral frame interior joints to connect
Girder construction and construction method are connect, the component which uses includes prefabricated post and precast beam.The column of frame structure-column connection
Node at every layer of inflection point or every two layers of inflection point, be attached using grout sleeve slip casting connection method；Beam
The connection of column interior joint is anchored using node reserves duct grouting, and the U-shaped muscle of top tension reinforcement and lower part passes through reserving hole channel and fills
Slurry anchoring, in overlapping beam-ends using the cast-in-place connection for realizing beam column of engineering fiber cement composites, join domain length
For 400mm~500mm；Meanwhile in order to weaken the insufficient influence of new-old concrete interface binding intensity, beam-ends rigidity is improved, is reached
To by the purpose of plastic hinge, frosting treatment is carried out to prefabricated post end node bonding pad concrete interface, and save in beam column
Stiffener is arranged in point junction, and stiffener is also by reserving hole channel and is in the milk.The present invention is applied to prefabricated integral frame
The aseismatic design concept in structure, realizing " strong column and weak beam ", " strong shear capacity and weak bending capacity " and " the strong weak component of node ", improves assembled
The anti-seismic performance of concrete frame structure；Meanwhile vertical member is connected using grout sleeve, and it is convenient and efficient, accelerate construction speed
Degree.
The technical solution adopted by the present invention are as follows:
A kind of high ductility prefabricated integral frame interior joint connection structure, prefabricated post and horizontal direction including vertical direction
Precast beam, the prefabricated post and precast beam two sides are symmetrically arranged with vertical muscle, internal equal along being equipped with the vertical muscle vertical direction
Even parallel several stirrups；
The prefabricated post is equipped with node bonding pad, and being horizontally disposed in the node bonding pad has several reserving hole channels；
In the prefabricated post two sides, the end of two precast beams in left and right is respectively by described in the corresponding insertion of anchor bar
In reserving hole channel, it is connected with the prefabricated post.
Further, the preformed hole is inserted by the way that vertical muscle and U-shaped muscle are corresponding respectively in the top and the bottom of the precast beam end
The upper and lower layer duct in road is fixed.
Further, stiffener is arranged in the duct of the middle section of the reserving hole channel.
Further, in overlapping beam-ends using the cast-in-place connection for realizing beam column of engineering fiber cement composites, even
Connecing zone length is 400mm~500mm.
Further, inflection point or every two layers of inflection point of the column of the prefabricated post-column connection node at every layer
Place, is attached using grout sleeve slip casting connection method.
Further, the concrete interface of the node bonding pad of the prefabricated post carries out frosting treatment.
A kind of construction method of high ductility prefabricated integral frame interior joint connection structure, comprising the following steps:
1) mold of prefabricated post and precast beam, assembling reinforcement, the position of positioning reserving hole channel, grout sleeve, preparation are made
The prefabricated components of prefabricated post and precast beam；
2) after prefabricated post and lower floor's post positioned in alignment are good, lateral support is added to fix in column side, then through grout sleeve under
Layer column connects；
3) the stiffener and lower part U-shaped muscle intermediate by reserving hole channel setting, and it is closely knit to be in the milk；
4) precast beam lifting is in place, the vertical muscle on top is arranged by reserving hole channel, and it is closely knit to be in the milk；
5) stirrup of node bonding pad is bound；
6) engineering fiber cement composites are poured in node bonding pad.
The utility model has the advantages that high ductility prefabricated integral frame interior joint connection structure provided by the invention and construction method, and
Existing prefabricated integral frame structure node interconnection technique scheme is compared, and is had the advantages that
Column fractionation position is selected at floor 1. existing fabricated construction is more, but is located near node area at floor, it is interior
Power is complicated and larger, while component stitching portion is the weak part of structure again, if in the horizontal loadings such as earthquake or wind
Under effect, structure may be made to be in the state being absolutely unsafe.Internal force analysis is carried out by finite element software it is found that frame column is perpendicular
To under horizontal loads, be moment of flexure smaller part away from 1/3 to 1/2 place of styletable, therefore the present invention is proposed the fractionation position of column
It is selected at every layer of inflection point or every two layers of inflection point, weak part can be made to avoid internal force maximum, improve structural elements
Safety.Simultaneously in this height, also it is conducive to very much construction, it is convenient to bring to construction.
2. column is attached with column junction using grout sleeve slip casting connection method, constructs very convenient, can be improved
Speed of application；And junction is at every layer of inflection point, and under horizontal earthquake action, which enables bonding pad
Enough bearing capacities are enough provided.
3. the connection of existing fabricated construction cast-in-place concrete realization precast beam and prefabricated post mostly at node, therefore
During practice of construction, the construction positioning of prefabricated components junction is not easy, and reduces speed of application and efficiency；And this kind of way is led
It causes node area hooping bars layout overstocked, brings great difficulty to site operation, be easy to cause node or key position coagulation
Soil vibrates leakiness, brings security risk.And node and prefabricated shell of column are realized into one-piece casting in factory in the present invention, both improved
Speed of application and efficiency, in turn ensure the quality and bearing capacity in node area.
4. if production, the installation of template can be given being embedded to beam-ends top tension when pouring prefabricated post indulges muscle and the U-shaped muscle in lower part
Great difficulty is brought with dismounting.Therefore, the method that the present invention uses reserving hole channel, duct is arranged when pouring prefabricated post, to
Beam-ends top tension is penetrated when in-site installation and indulges muscle and the U-shaped muscle in lower part, and it is closely knit to be in the milk, and can effectively improve the production effect of prefabricated post
Rate, while also facilitating lifting and transport.
5. the cast-in-place ECC material of beam-ends and prefabricated post interface binding intensity are insufficient, beam-ends insufficient rigidity is inevitably resulted in, is weakened
The ductility and bearing capacity of node.Stiffener is set in node bonding pad, improves the rigidity of beam-ends, having reached will be outside plastic hinge
The purpose of shifting, to improve the anti-seismic performance of node.
6. pair prefabricated post end node bonding pad concrete interface carries out frosting treatment, can improve to a certain extent new and old mixed
The cohesive force of solidifying Soil Interface, improves beam-ends rigidity, new-old concrete interface is avoided to generate large fracture too early.
7. the crucial force part in joint cores and near zone structure mainly assumes responsibility for inhaling under geological process
The effect of receipts and dissipation seismic energy, shows higher ductility and good energy-dissipating property using ECC material rear part.Pass through
ECC Joints show compared with the conventional steel bar concrete bean column node of the identical ratio of reinforcement, every antidetonation of the invention
Index shows clear superiority, and ECC node improves 20% than the ultimate bearing capacity of common RC node, and displacement improves when destruction
15%；After reaching the limit of load, bearing capacity does not decline rapidly ECC node, but has longer more stably descending branch,
This is because ECC material has high tenacity, the development in crack can be inhibited, guarantee that node still has biggish carrying after surrender
Power and deformability.
8. the present invention is by the beam-ends plastic hinge region for being used in nearly core space of this material of ECC, under geological process, this
A little regions are by biggish moment of flexure, and crack is to occur here, develop first, finally when certain major fracture extends to one fixed width
When, bearing capacity reduces rapidly, and component failure is destroyed.In this region, the microcrack of ECC material, which will carry out feature, to be played,
This will delay major fracture time of occurrence, member for prolonging in the ductility for compared with the time to work under high-bearing capacity, improving structure entirety and
Energy-dissipating property.
9. the present invention is all made of industrialized production, labor using prefabricated post and precast beam compared with cast-in-place armored concrete
Dynamic high production efficiency, production environment are stablized, and the sizing and standardization of component are conducive to mechanization production, and strictly examine by standard
Factory product is tested, thus is easier to control and guarantees quality.The use of ECC material, steel mesh when solving the construction of cast-in-place region
Intensively, the not firm problem of concreting, join domain good integrity.
10. for existing fabricated construction, bonding pad is the weak part in structure, junction it is reliable whether relationship
The safety of total.And the shear-carrying capacity and ductility of ECC is higher than normal concrete, by using ECC in bonding pad
Material can effectively improve the energy-dissipating property and bearing capacity of existing assembling frame structure bonding pad.
11. every cubic metre of price is normal concrete more than 4 times, therefore this hair due to the higher cost of ECC material
It is bright to propose that the application made in the key position (prefabricated components junction) of structure using ECC material it in practical projects is had
Feasibility economically.
70% or more is flyash in 12.ECC material, the waste residue after being mainly derived from thermal power plant coal combustion, and is poured
Prefabricated components made of building are the refuse reclamations to flyash, therefore ECC is a kind of environmentally friendly material, are guaranteeing component
The recycling to resource is reached while superior performance, meets energy-saving and environment-friendly thought.
Detailed description of the invention
Fig. 1 is node schematic diagram of the invention；
Fig. 2 is the prefabricated post front detail of construction of the invention；
Fig. 3 is prefabricated post side surface configurations detail drawing of the invention；
Fig. 4 is the prefabricated post detail of construction after configuration of the invention vertical muscle, U-shaped muscle and stiffener；
Fig. 5 is the precast beam detail of construction of the invention；
Fig. 6 is overall construction detail drawing of the invention.
Have in figure: prefabricated post (1), precast beam (2), engineering fiber cement composites (3), grout sleeve (4), pre-
It boxes out (5), indulge muscle (6), stirrup (7), U-shaped muscle (8) and stiffener (9).
Specific embodiment
The present invention will be further explained with reference to the accompanying drawing.
As shown in Figure 1, being a kind of high ductility prefabricated integral frame interior joint connection structure, including the prefabricated of vertical direction
Column 1 and the precast beam of horizontal direction 2, the prefabricated post 1 and 2 two sides of precast beam are symmetrically arranged with vertical muscle 6, internal to indulge along with described
6 vertical direction of muscle is equipped with several stirrups 7 of uniform parallel；Prefabricated post 1 and precast beam 2 are poured in factory using normal concrete
Build completion, internal pre-buried vertical muscle 6 and stirrup 7.
As shown in Figure 2,3, the prefabricated post 1 is equipped with node bonding pad, and being horizontally disposed in the node bonding pad has number
Reserving hole channel 5；
As shown in Figure 4,5, 6, in 1 two sides of prefabricated post, the end of two precast beams 2 in left and right passes through anchoring respectively
Reinforcing bar is corresponding to be inserted into the reserving hole channel 5, is connected with the prefabricated post 1.The top and the bottom of 2 end of precast beam pass through respectively
Vertical muscle 6 and the corresponding upper and lower layer duct for being inserted into the reserving hole channel 5 of U-shaped muscle 8 are fixed.The middle section of the reserving hole channel 5
Stiffener 9 is arranged in duct.
As shown in Figure 1, the engineering cast-in-place connection for realizing beam column of fiber cement composites 3 is used in overlapping beam-ends,
Join domain length is 400mm~500mm.
As shown in Fig. 2, inflection point or every two layers of recurvation of the column of the prefabricated post 1-column connection node at every layer
At point, it is attached using 4 slip casting connection method of grout sleeve.
Preferably, the concrete interface of the node bonding pad of the prefabricated post 1 carries out frosting treatment.
A kind of construction method of high ductility prefabricated integral frame interior joint connection structure, comprising the following steps:
1) mold of prefabricated post 1 and precast beam 2 is made, assembling reinforcement 7 positions the position of reserving hole channel 5, grout sleeve,
Prepare the prefabricated components of prefabricated post 1 and precast beam 2；
2) after prefabricated post 1 and lower floor's post positioned in alignment are good, lateral support is added to fix in column side, then through grout sleeve under
Layer column connects；
3) the intermediate U-shaped muscle 8 of stiffener 9 and lower part is set by reserving hole channel 5, and it is closely knit to be in the milk；
4) precast beam 2 lifts in place, the vertical muscle 6 on top is arranged by reserving hole channel 5, and it is closely knit to be in the milk；
5) stirrup 7 of node bonding pad is bound；
6) engineering fiber cement composites 3 are poured in node bonding pad.
Embodiment
Column-column connection is attached using 4 slip casting connection method of grout sleeve.Across reserving hole channel 5 in beam column interior joint
Junction setting stiffener 9 and anchoring of being in the milk are connected, beam section top tension indulges muscle 6 and the U-shaped muscle 8 in lower part passes through reserving hole channel 5
And anchoring of being in the milk, in overlapping beam-ends using the engineering cast-in-place connection for realizing beam column of fiber cement composites 3, join domain
Length is 400mm~500mm.
It is prepared by a kind of present invention, that is, high ductility prefabricated integral frame interior joint connection beam column and the component of construction method
Journey and application process are as follows:
1. determining the size of prefabricated integral frame precast beam, precast column unit, arrangement of reinforcement etc. according to actual design requirement.So
After make mold, assembling reinforcement positions reserving hole channel, grout sleeve position.
2. according to casting concrete prefabricated components are required, and to shell of column node bonding pad concrete interface when close to final set
Frosting treatment is carried out, forms prefabricated components within maintenance 28 days.
3. when construction, first by prefabricated post 1 lift in place, with lower floor's post positioned in alignment it is good after, add in column side and appropriate laterally prop up
Support is fixed, then is connected by grout sleeve and lower floor's post；Secondly, stiffener 9 and lower part U is arranged by reserving hole channel 5
Type muscle 8, and it is closely knit to be in the milk；Then, precast beam 2 is lifted in place, is fixed temporarily, it is vertical that top tension is arranged by reserving hole channel 5
Muscle 6, and it is closely knit to be in the milk, and binds stirrup 7, and template is arranged in beam-to-column joint area side；Finally, pouring ECC in node bonding pad
Material, the one-piece casting together with the laminated floor slab of setting reach after some strength i.e. collapsible die, complete the construction of beam-to-column joint area.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (3)
1. a kind of high ductility prefabricated integral frame interior joint connection structure, it is characterised in that: the prefabricated post including vertical direction
(1) and the precast beam of horizontal direction (2), the prefabricated post (1) and precast beam (2) two sides are symmetrically arranged with vertical muscle (6), internal edge
Several stirrups (7) of uniform parallel are equipped with vertical muscle (6) vertical direction；
The prefabricated post (1) is equipped with node bonding pad, and being horizontally disposed in the node bonding pad has several reserving hole channels (5)；
In the prefabricated post (1) two sides, the end of two precast beams (2) in left and right passes through the corresponding insertion institute of anchor bar respectively
It states in reserving hole channel (5), is connected with the prefabricated post (1)；
In overlapping beam-ends using the engineering cast-in-place connection for realizing beam column of fiber cement composites (3), join domain length
For 400mm ~ 500mm；
The reserving hole channel (5) is inserted by the way that vertical muscle (6) and U-shaped muscle (8) are corresponding respectively in the top and the bottom of precast beam (2) end
Upper and lower layer duct fix；
Stiffener (9) are arranged in the duct of the middle section of the reserving hole channel (5)；
The column of the prefabricated post (1)-column connection node is at every layer of inflection point or every two layers of inflection point, using grouting
Sleeve (4) slip casting connection method is attached.
2. high ductility prefabricated integral frame interior joint connection structure according to claim 1, it is characterised in that: described pre-
The concrete interface of the node bonding pad of column (1) processed carries out frosting treatment.
3. a kind of construction method of high ductility prefabricated integral frame interior joint connection structure according to claim 1 or 2,
It is characterized by comprising following steps:
1) mold of prefabricated post (1) and precast beam (2) is made, assembling reinforcement (7) positions the position of reserving hole channel (5), grout sleeve
It sets, prepares the prefabricated components of prefabricated post (1) and precast beam (2)；
2) after prefabricated post (1) and lower floor's post positioned in alignment are good, add lateral support to fix in column side, then pass through grout sleeve and lower layer
Column connects；
3) stiffener (9) and the lower part U-shaped muscle (8) intermediate by reserving hole channel (5) setting, and it is closely knit to be in the milk；
4) precast beam (2) lifting is in place, the vertical muscle (6) on top is arranged by reserving hole channel (5), and it is closely knit to be in the milk；
5) stirrup (7) of node bonding pad is bound；
6) engineering fiber cement composites (3) are poured in node bonding pad.
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| CN201610349356.5A CN106013432B (en) | 2016-05-24 | 2016-05-24 | A kind of high ductility prefabricated integral frame interior joint connection structure and construction method |
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| CN201610349356.5A CN106013432B (en) | 2016-05-24 | 2016-05-24 | A kind of high ductility prefabricated integral frame interior joint connection structure and construction method |
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| CN106013432B true CN106013432B (en) | 2019-05-17 |
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| CN108951847B (en) * | 2018-07-31 | 2020-03-24 | 同济大学 | UHPC-based precast concrete frame structure system and construction method thereof |
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| CN111395519A (en) * | 2020-03-31 | 2020-07-10 | 同济大学建筑设计研究院(集团)有限公司 | Construction method of assembled beam column |
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| CN112096116A (en) * | 2020-10-10 | 2020-12-18 | 福州大学 | Reinforcing structure for improving earthquake-proof performance of earthquake-damage assembled frame structure, construction method and testing method |
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