CN111335458A - Prefabricated assembly double-hinged frame system - Google Patents
Prefabricated assembly double-hinged frame system Download PDFInfo
- Publication number
- CN111335458A CN111335458A CN201811547229.1A CN201811547229A CN111335458A CN 111335458 A CN111335458 A CN 111335458A CN 201811547229 A CN201811547229 A CN 201811547229A CN 111335458 A CN111335458 A CN 111335458A
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- prefabricated
- column
- frame system
- hinged
- precast
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- 239000000463 material Substances 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 8
- 239000004567 concrete Substances 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 16
- 238000005516 engineering process Methods 0.000 abstract description 15
- 238000001514 detection method Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009417 prefabrication Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000000641 cold extrusion Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- E04B1/19—Three-dimensional framework structures
- E04B2001/1924—Struts specially adapted therefor
-
- 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
- E04B1/19—Three-dimensional framework structures
- E04B2001/1957—Details of connections between nodes and struts
- E04B2001/1963—Screw connections with axis at an angle, e.g. perpendicular, to the main axis of the strut
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
The patent discloses a prefabricated assembly double-hinged frame system, precast beam and prefabricated post adopt double-hinged support to be connected. The beams and columns may be prefabricated components of various forms and materials. Each hinged support is composed of a column embedded part, a connecting plate, a beam end embedded part, a pin shaft, a bolt or a welding line. The novel assembling technology of the double hinged supports of the prefabricated frame beam column, which is provided by the patent technology, fundamentally solves the assembling problem of the prefabricated frame beam column and can realize the real assembling type construction of the prefabricated beam column. 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
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 the tensile property is poor, the cross section is big, from characteristics such as great, the component is suitable for simple piling relatively and the like and is put together, and 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 and probably obviously not enough. However, when the two articulated supports are combined organically, under the action of lateral loads such as earthquake and the like, the tensile force and the pressure of the supports can form a resisting bending moment, so that the lateral bending deformation of the component is restrained, and the restraining capability and the effect which are the same as those of the traditional rigid restraint are achieved.
In the rigid connection of the beam and the column, bending moment exists in the end section of the frame beam. The bending moment is obtained by the tension provided by the longitudinal steel bars in the tension area of the beam and the pressure born by the concrete and the compression steel bars in the compression area. The double-hinged support is connected, and the tensile force of the tensile area at the beam end is transmitted to the support through the tensile longitudinal rib and then transmitted to the column through the support. The pressure of the beam end compression area is transmitted to the support through the concrete and the compression longitudinal ribs and then transmitted to the column through the support. The tensile force and the pressure of the upper hinged support and the lower hinged support form a couple, a constraint bending moment is provided between the beam and the column, and rigid connection is realized through the hinged supports.
The technical scheme of the invention is as follows:
the prefabricated frame beam and the prefabricated frame column are assembled by adopting a vertically-arranged double-hinged support, the beam is a prefabricated beam or a prefabricated and cast-in-place superposed beam and other beams made of various materials and forms, and the column is a reinforced concrete prefabricated column, a steel pipe concrete prefabricated column and other columns made of various materials and forms. Each hinged support is composed of a column embedded part, a connecting plate, a beam embedded part, a connecting plate, a pin shaft, a connecting bolt or a welding line.
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. and (4) bolts.
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 damping ratio of the structure, and inputting the damping smaller than that of the concrete structure;
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, the beams perform reduction of upper negative bending moment and lower positive bending moment according to the distance between the centers of the actual hinged supports at the beam ends and the distance between the nodes of the column network, and perform reinforcement calculation.
And sixthly, designing a connecting plate, an embedded plate and an embedded rib of the tensioned hinged support according to the principle that the strength of the steel bar in the tensioned area of the beam end is equivalent. And designing a connecting plate, an embedded plate and a pre-embedded rib of the compressed hinge support according to the principle of equivalent concrete strength of a compressed area at the beam end.
And seventhly, drawing a construction drawing to finish related design contents.
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 parts 3 are arranged at the corresponding positions of the double-hinged support at the column side, the embedded parts 3 comprise anchor bars and end plates, and the end plates are welded with the connecting plates 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 on 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 double-hinged support at the end part of the beam, the embedded part 5 comprises anchor bars and end plates, and the end plates are welded with the connecting plate 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 on 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 precast column 1 and the connecting plate 6 of precast beam 2 adopt two articulated supports to be connected, can adopt following multiple assembly methods:
(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.
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 preferred embodiments of the present patent have been described in detail above, however, the invention is not limited to the details of the above embodiments, 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, in order to increase the difference in height between two hinged supports, the lower hinged support can be moved downwards, for which a protruding part is needed at the bottom of the beam end. The welding between the anchor bars and the embedded plates can adopt fillet welding and the like besides perforation plug welding. These variations are within the scope of the patent.
Compare present prefabricated assembled "cast-in-place equalling", the connection technology of this patent has following advantage:
1. the structural design flow is greatly 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 is not provided with a cast-in-place section at the beam column connecting node, thereby avoiding the prefabrication and the cast-in-place of 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 is not 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 'double-hinged' assembly technology of the invention upgrades the traditional assembly technologies such as sleeve grouting and the like from 'wet' to 'dry', and is more suitable for the actual requirements 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 structure 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 technology can be applied to cantilever beams;
11. the initial estimation can reduce the installation period by 20 percent and the comprehensive installation cost by 20 percent.
Claims (5)
1. The utility model provides a prefabricated assembly double hinge frame system which characterized in that: the precast beams and the precast columns are connected in a vertical double-hinged support form.
2. The frame system according to claim 1, characterized in that: the beam is a precast beam or a precast and cast-in-place superposed beam and other beams with various materials and forms.
3. The frame system according to claim 1, characterized in that: the column is a reinforced concrete prefabricated column, a steel pipe concrete prefabricated column and columns made of various materials and forms.
4. The frame system according to claim 1, characterized in that: each 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.
5. The frame system according to claim 1, characterized in that: can be applied to the cantilever beam of the frame beam and the cantilever beam of the non-frame beam of the floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811547229.1A CN111335458A (en) | 2018-12-18 | 2018-12-18 | Prefabricated assembly double-hinged frame system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811547229.1A CN111335458A (en) | 2018-12-18 | 2018-12-18 | Prefabricated assembly double-hinged frame system |
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| Publication Number | Publication Date |
|---|---|
| CN111335458A true CN111335458A (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811547229.1A Pending CN111335458A (en) | 2018-12-18 | 2018-12-18 | Prefabricated assembly double-hinged frame system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668931A (en) * | 2021-08-20 | 2021-11-19 | 中建一局集团建设发展有限公司 | Prefabricated self-adaptive vertical deformation concrete structure system and construction method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108775083A (en) * | 2018-07-09 | 2018-11-09 | 东南大学 | The assembly concrete frame structure and construction method connected outside precast beam plastic hinge region |
-
2018
- 2018-12-18 CN CN201811547229.1A patent/CN111335458A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108775083A (en) * | 2018-07-09 | 2018-11-09 | 东南大学 | The assembly concrete frame structure and construction method connected outside precast beam plastic hinge region |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668931A (en) * | 2021-08-20 | 2021-11-19 | 中建一局集团建设发展有限公司 | Prefabricated self-adaptive vertical deformation concrete structure system and construction method thereof |
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Application publication date: 20200626 |
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