CN111335459A - Prefabricated hinged frame supporting system - Google Patents

Prefabricated hinged frame supporting system Download PDF

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Publication number
CN111335459A
CN111335459A CN201811547230.4A CN201811547230A CN111335459A CN 111335459 A CN111335459 A CN 111335459A CN 201811547230 A CN201811547230 A CN 201811547230A CN 111335459 A CN111335459 A CN 111335459A
Authority
CN
China
Prior art keywords
column
prefabricated
assembly
precast
connecting plate
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201811547230.4A
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Chinese (zh)
Inventor
鲁风勇
李小敏
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Nanjing Baixisi Building Technology Co ltd
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Nanjing Baixisi Building Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Priority to CN201811547230.4A priority Critical patent/CN111335459A/en
Publication of CN111335459A publication Critical patent/CN111335459A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/20Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material
    • E04B1/21Connections specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19Three-dimensional framework structures
    • E04B2001/1924Struts specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/19Three-dimensional framework structures
    • E04B2001/1957Details of connections between nodes and struts
    • E04B2001/1963Screw connections with axis at an angle, e.g. perpendicular, to the main axis of the strut

Abstract

The patent discloses a prefabricated assembly hinged frame support system adopts articulated bearing to be connected precast beam and precast column, sets up buckling restrained brace between the precast column. The beam and the column can be prefabricated parts of various forms and materials, and the hinged support is composed of a column embedded part, a connecting plate, a beam end embedded part, a connecting plate, a pin shaft, a bolt or a welding line. The buckling restrained brace system comprises buckling restrained braces, column embedded parts and connecting plates. The novel assembly technology of the hinged support and the buckling restrained brace is adopted for the prefabricated beam column, the assembly difficulty of the prefabricated frame beam column is fundamentally solved, and the real assembly of the prefabricated beam column is realized. The assembly technology has the advantages of scientific structure, simple and convenient construction, convenient detection and reliable quality, has remarkable technical and economic advantages, and can be widely applied to design and construction of multi-storey and high-rise buildings in a prefabricated assembly manner.

Description

Prefabricated hinged frame supporting system
Technical Field
The patent relates to a prefabricated assembly type industrialized system of civil engineering, belonging to a design method and a construction technology of a prefabricated assembly type frame structure.
Background
The prefabricated reinforced concrete structure assembling technology is to decompose the components of reinforced concrete shear wall, column, beam, floor slab, stairs, etc. according to floor, span, etc. and prefabricate in sections in component processing plant and transport the prefabricated components to site for connection and assembly.
The prefabricated assembly type technology adopted at present is that prefabricated components realize the same structure and effect as a cast-in-place structure through connection measures, and the integrity, the safety and the seismic performance achieve equal cast-in-place. Different from the joint bar and the anchor of the cast-in-place beam column reinforcing steel bar, the joint bar between the prefabricated parts can not be connected with the anchor in the prefabricated parts to be connected, and the joint bar is connected through grouting sleeves and cold extrusion joints and is connected by grouting materials or concrete. The assembly mode puts higher requirements on the manufacturing precision of the component, the hoisting and positioning of the component and the grouting material. Moreover, the quality control difficulty is higher, and a camera is required to be worn for construction. The problems of long construction period, high construction cost, poor quality reliability and the like of connection construction are caused.
The existing prefabrication and assembly technology has the advantages of good prefabricated part forming quality, reduced dust pollution on construction sites, reduced labor service on site construction and the like, but due to the problems of the assembly technology, the assembly efficiency is low, the process is coordinated and complex, the hoisting cost is high, and the rapid development of the prefabrication and assembly technology is severely restricted.
Disclosure of Invention
The civil engineering structure not only needs to bear vertical dead load such as dead weight and the like, uses live load, but also needs to bear horizontal wind load and violent shaking earthquake action. In any form of structure, not only must the structure have sufficient strength to ensure the safe load-bearing capacity of the structural member, but also must the structure have sufficient lateral stiffness to ensure that the deformation of the structure is controlled within the range required by the service performance.
The technical principle of the invention is as follows:
for the concrete prefabricated member, because tensile property is poor, the cross-section is big, from characteristics such as great, the component is suitable for simple piling and the like and is put together comparatively, the connection between precast beam and the post adopts the form of articulated support to realize very easily, because articulated system, the structure whole resists the lateral stiffness probably obviously not enough, needs to increase and resists the lateral force component.
And a hinged support is adopted between the precast beam and the precast column, and the precast beam is only used as a vertical bearing member. The function of resisting wind load and horizontal earthquake action is completed by the oblique buckling-restrained brace between the columns and the frame column.
The inclined strut has excellent axial tension and compression performance, and has greater advantages and higher efficiency in the aspect of providing lateral stiffness compared with a frame structure consisting of beam columns. In recent years, the developed buckling restrained brace well solves the problem that a common brace is easy to buckle when being pressed, and has good energy consumption capability under the condition of a large earthquake.
If the prefabricated beam and the prefabricated column are hinged to bear vertical load, the existing wet connection technologies such as grouting sleeves and the like are not needed. The buckling-restrained brace is arranged between the prefabricated columns, so that the function of resisting horizontal action sufficiently is realized, the defect of insufficient rigidity during hinging is overcome, and the key point of the true prefabricated assembly technology is realized.
The technical scheme of this patent is:
and the prefabricated frame beam and the prefabricated frame column are connected by adopting a hinged support. The beam can be a precast beam, a precast and cast-in-place superposed beam and other beams with various materials and forms, and the column can be a reinforced concrete precast column, a steel pipe concrete precast column and other columns with various materials and forms. The hinged support is composed of a column embedded part, a connecting plate, a beam embedded part, a connecting plate, a pin shaft, a bolt or a welding line. And anti-buckling restrained braces are arranged between the frame columns. Unlike "wet" assembly, this assembly, which may be referred to as a dry assembly frame support system of precast beams and columns,
the design and assembly technology of the patent is a thorough breakthrough of the existing 'equivalent cast-in-place' technology, can conveniently and quickly realize the efficient and reliable assembly of the precast beam and the column, and can be widely applied to the design and construction of multi-storey and high-rise buildings.
Drawings
Fig. 1 shows a structural elevation of the first embodiment of the patent.
Fig. 2 shows a schematic pin connection diagram of the first embodiment of the present patent.
Fig. 3 shows a schematic view of a bolt connection according to a first embodiment of the patent.
Figure 4 shows a force diagram of the first embodiment of the patent.
Fig. 5 shows a large structural view of the first embodiment of the patent.
In the drawings, reference numerals are used: 1. prefabricating a column; 2. prefabricating a beam; 3. prefabricating embedded parts (end plates and anchor bars) of the columns and connecting plates; 4. precast beam embedded parts (end plates and anchor bars) and connecting plates; 5. a pin shaft; 6. a bolt connecting plate; 7. a bolt; 8. buckling restrained brace system.
Detailed Description
The prefabricated beam column hinged assembly frame support system is different from a cast-in-place structure in structure design, and modeling and calculation are required to be carried out according to the following method;
firstly, inputting cross sections and materials of beams, columns and floor slabs, inputting inclined supports, arranging the supports in the X and Y directions in a bidirectional mode, inputting constant loads and using loads, building different standard layers, inputting layer heights, concrete materials and the like, and assembling a structural model according to the same steps of a cast-in-place structure;
secondly, modifying the model, and changing the type of the beam end support into two-end hinged connection; modifying the damping ratio of the structure, and inputting the damping smaller than the damping ratio of the concrete structure; modifying the seismic grade of the frame beam, wherein the hinged beam does not participate in seismic calculation, and the seismic grade can be four grades;
thirdly, calculating the whole structure, and performing earthquake resistance calculation under a small earthquake;
and fourthly, checking a calculation result, returning to the modeling step according to the beam column reinforcement structure and the dynamic performance indexes such as the displacement angle, the displacement ratio, the seismic shear and the like, and adjusting the structural members and the arrangement until all the calculation indexes meet the requirements.
Fifthly, bending moment reduction is carried out on the beam according to the distance between the centers of the actual hinged supports at the beam ends and the distance between the column network nodes, and reinforcement calculation is carried out. The upper part of the beam is provided with structural reinforcing bars.
And sixthly, designing a connecting plate, an embedded plate and embedded ribs of the hinged support according to the internal force of the beam end.
And seventhly, selecting the type of the buckling restrained brace according to the information of the structure manufacturer to complete related design content.
The connecting parts of the prefabricated columns and the prefabricated beams are manufactured according to the following requirements:
1. when the prefabricated column 1 is manufactured, the embedded part 3 is arranged at the corresponding position of the hinged support, the embedded part 3 comprises anchor bars and end plates, and the end plates are welded with the connecting plate 4. The end plates and the anchor bars of the embedded parts can be connected in the following various modes:
(1) the anchor bars and the end plates are subjected to plug welding through holes.
(2) The anchor bars are bolted with the end plates, the anchor bars are long screw rods, and the screw rods extend out of the surface of the column. The screw rod is sleeved in the opening of the end plate, and the nut is screwed into the screw rod to be connected with the outer side of the end plate.
(3) The anchor bars are connected with the end plates through bolts, and straight thread sleeves are arranged between the anchor bars and the end plates and are embedded in the columns. And (4) drilling holes on the end plate, and screwing bolts into the embedded sleeves after installation and positioning.
2. When the precast beam 2 is manufactured, the embedded part 5 is arranged at the corresponding position of the beam end hinged support, the embedded part 5 comprises anchor bars and end plates, and the end plates are welded with the connecting plates 6. The end plates and the anchor bars of the embedded parts can be connected in the following various modes:
(1) the anchor bars and the end plates are subjected to plug welding through holes.
(2) The anchor bars are bolted with the end plates, the anchor bars are long screw rods, and the screw rods extend out of the surface of the beam end. The screw rod is sleeved in the opening of the end plate, and the nut is screwed into the screw rod to be connected with the outer side of the end plate.
(3) The anchor bars are connected with the end plates through bolts, and straight thread sleeves are arranged between the anchor bars and the end plates and are embedded in the columns. And (4) drilling holes on the end plate, and screwing bolts into the embedded sleeves after installation and positioning.
The field assembly of the precast column and the precast beam adopts the following steps:
the connecting plate 4 of the precast column 1 is connected with the connecting plate 6 of the precast beam 2 by adopting a hinged support, and the following various assembling modes can be adopted:
(1) the connecting plate 4 and the connecting plate 6 are provided with pin shaft holes and are connected by pin shafts.
(2) The connecting plate 4 and the connecting plate 6 are provided with connecting plates which are connected by high-strength friction type bolts.
(3) The connecting plate 4 and the connecting plate 6 are welded.
The method for the field installation of the buckling-restrained brace comprises the following steps:
and a buckling-restrained brace system is arranged between the prefabricated columns and comprises buckling-restrained braces, column embedded parts and connection structures between the braces and the column embedded parts. The connection can take a number of forms:
(1) and (4) pin shaft connection. The column connecting plate is in lap joint with the supporting connecting plate, and a pin shaft is arranged in a round hole of the column connecting plate.
(2) And (4) connecting through bolts. The column connecting plate is lapped with the supporting connecting plate, and a bolt is arranged in a bolt hole of the column connecting plate.
And finally, casting a plate lamination layer on the upper part of the beam in a cast-in-place mode to complete the integral floor system.
The above detailed description of the preferred embodiments of the patent, however, the invention is not limited to the details of the embodiments described above, and within the scope of the technical idea of the patent the solution of the patent can be varied in size and form, for example, the articulated supports can be at any height of the side of the beam. The welding between the anchor bars and the embedded plates can also adopt fillet welds and the like in addition to the perforation plug welding mentioned above. Such variations are within the scope of this patent.
Compared with the cast-in-situ equivalent method,
the assembly methods such as hinged support and buckling restrained brace are the assembly techniques that really match the prefabricated parts, and have the following advantages:
1. the structural design flow is simplified, and the existing software is directly adopted to calculate the map;
2. the hinged support is arranged at the beam column node, so that the beam span is reduced, and the manufacturing cost is more saved;
3. the precast column does not need to be provided with a cast-in-situ section at the beam column connecting node, thereby avoiding prefabricating and casting the section with the largest bending moment at the column top and the column bottom, and greatly relaxing the technical requirement on the connection of the precast column;
4. the prefabricated column does not need to be provided with a cast-in-place section at the beam column connecting node, the manufacturing length and the connecting position of the prefabricated column are liberated, a longer prefabricated column can be manufactured, the number of joints is reduced, and the construction efficiency is greatly improved;
5. the prefabricated column joints can be connected in a staggered manner on different floors, so that the integrity of a prefabricated structure is greatly improved;
6. the hinge and support assembly technology of the invention upgrades the traditional assembly technology such as sleeve grouting from 'wet' to 'dry', and is more suitable for the actual requirement of industrialized construction of prefabricated buildings;
7. all the reinforcing steel bars of the beam are bound in a prefabricated part factory without being bound on site, so that the construction process is reduced, and the hogging moment reinforcing steel bars of the beam are not arranged on site. The bottom of the beam can adopt high-strength steel bars such as prestressed steel wires, steel strands and the like, so that the cost performance is higher.
8. The prefabricated beam, the prefabricated column and the supports form a stable stress system, the buckling restrained brace and the frame column resist micro-vibration and horizontal action during construction, no additional temporary support is needed, and a support scaffold can not be arranged below the prefabricated beam;
9. the cast-in-place slab can be poured and maintained at different floors simultaneously;
10. the initial estimation can reduce the installation period by 20 percent and the comprehensive installation cost by 20 percent.

Claims (4)

1. The utility model provides a prefabricated hinged frame support system which characterized in that: the precast beam and the precast column are connected in a hinged support form, and an oblique buckling-restrained brace is arranged between the column and the column.
2. The framing support system of claim 1, wherein: the beam is a precast beam, a precast and cast-in-place superposed beam and other beams with various materials and forms.
3. The framing support system of claim 1, wherein: the column is a reinforced concrete prefabricated column, a steel pipe concrete prefabricated column and columns made of various materials and forms.
4. The framing support system of claim 1, wherein: the hinged support is composed of a column embedded part, a connecting plate, a beam embedded part, a connecting plate, a pin shaft, a bolt or a welding line and the like.
CN201811547230.4A 2018-12-18 2018-12-18 Prefabricated hinged frame supporting system Pending CN111335459A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811547230.4A CN111335459A (en) 2018-12-18 2018-12-18 Prefabricated hinged frame supporting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811547230.4A CN111335459A (en) 2018-12-18 2018-12-18 Prefabricated hinged frame supporting system

Publications (1)

Publication Number Publication Date
CN111335459A true CN111335459A (en) 2020-06-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113123458A (en) * 2021-03-06 2021-07-16 河北工业大学 Connecting column type steel connection energy dissipation support frame system and construction method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206722087U (en) * 2017-04-19 2017-12-08 西华大学 A kind of assembly concrete frame structure bracing members bearing
CN107761950A (en) * 2017-10-30 2018-03-06 南京百西思建筑科技有限公司 A kind of assembled steel reinforced concrete angle brace framework and its construction method
CN207700371U (en) * 2017-10-30 2018-08-07 南京百西思建筑科技有限公司 A kind of assembled steel reinforced concrete angle brace frame

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206722087U (en) * 2017-04-19 2017-12-08 西华大学 A kind of assembly concrete frame structure bracing members bearing
CN107761950A (en) * 2017-10-30 2018-03-06 南京百西思建筑科技有限公司 A kind of assembled steel reinforced concrete angle brace framework and its construction method
CN207700371U (en) * 2017-10-30 2018-08-07 南京百西思建筑科技有限公司 A kind of assembled steel reinforced concrete angle brace frame

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113123458A (en) * 2021-03-06 2021-07-16 河北工业大学 Connecting column type steel connection energy dissipation support frame system and construction method

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