CN108060781B - Multi-beam connecting structure and hoisting construction method thereof - Google Patents
Multi-beam connecting structure and hoisting construction method thereof Download PDFInfo
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- CN108060781B CN108060781B CN201711191286.6A CN201711191286A CN108060781B CN 108060781 B CN108060781 B CN 108060781B CN 201711191286 A CN201711191286 A CN 201711191286A CN 108060781 B CN108060781 B CN 108060781B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling 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
- E04B1/38—Connections for building structures in general
- E04B1/58—Connections for building structures in general of bar-shaped building elements
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Abstract
The invention discloses a multi-beam connecting structure and a hoisting construction method thereof. The multi-beam connecting structure at least comprises a first precast beam and a second precast beam, one ends of the first precast beam and the second precast beam are butted and connected into a whole through cast-in-place concrete, the connecting ends of the first precast beam and the second precast beam are respectively provided with extending steel bars, the bending directions of the extending steel bars of the first precast beam and the second precast beam at the butted part are opposite, and the extending steel bars are staggered in the horizontal extending direction, and the multi-beam connecting structure can also comprise a third precast beam and a fourth precast beam. When the invention is used for hoisting, the hoisting sequence is determined according to the sequence of the beam section heights of all the precast beams from high to low. And when the beam section heights of the plurality of precast beams are the same, selecting the precast beam extending downwards in the reinforcing steel bar bending anchor direction to hoist firstly, and then hoisting the precast beam extending upwards in the reinforcing steel bar bending anchor direction. The invention can consider the hoisting sequence of the construction process before the design or construction of the precast beam, and strictly follow the preset sequence during hoisting, thereby avoiding the mutual interference of the extending steel bars of the precast beams and ensuring that the PC component can smoothly fall.
Description
Technical Field
The invention relates to a fully-assembled building structural member, in particular to a multi-beam connecting structure and a hoisting construction method thereof.
Background
In the current PC component design process, hoisting processes in the construction process are rarely considered, and in the current precast beam hoisting process, a guidance principle of a precast beam hoisting sequence is lacked, so that the precast beam hoisting process is disordered and disordered under the condition that the PC component hoisting sequence is not pointed out in advance, the precast beam extending steel bars are often interfered with one another, the precast beam hoisting is caused to conflict, and as a result, components at the last parts cannot be installed.
Disclosure of Invention
The invention aims to solve the technical problem that aiming at the defects of the prior art, the invention provides the multi-beam connecting structure and the hoisting construction method thereof, which can effectively avoid the interference of the extending reinforcing steel bars of a plurality of precast beams in the hoisting process.
In order to solve the technical problem, the invention provides a multi-beam connecting structure which at least comprises a first precast beam and a second precast beam, wherein one ends of the first precast beam and the second precast beam are butted and connected into a whole through cast-in-place concrete, the connecting ends of the first precast beam and the second precast beam are respectively provided with extending steel bars, and the extending steel bars of the first precast beam and the second precast beam are opposite in bending direction at the butted position and are mutually staggered in the horizontal extending direction.
In the above scheme, when the first precast beam and the second precast beam extend out of the straight steel bar anchor, the extending steel bar at the connecting end of the first precast beam extends obliquely downwards, and the extending steel bar at the connecting end of the second precast beam extends obliquely upwards.
In the above scheme, when the beam sections of the first precast beam and the second precast beam are the same in height and the steel bar extending out of the bent anchor, the extending steel bar at the connecting end of the first precast beam is bent downwards vertically after extending downwards for the necessary anchoring length in an inclined manner, and the extending steel bar at the connecting end of the second precast beam is bent upwards vertically after extending upwards for the necessary anchoring length in an inclined manner.
According to the scheme, the multi-beam connecting structure further comprises a third precast beam, wherein the end part of the third precast beam is provided with an extending steel bar and is vertically connected with the first precast beam and the second precast beam to form a T-shaped node, the beam section height of the third precast beam is lower than the beam section heights of the first precast beam and the second precast beam, and the extending steel bar at the connecting end of the third precast beam extends above the extending steel bar of the second precast beam and extends for a necessary anchoring length to be vertically bent upwards.
According to the scheme, the multi-beam connecting structure further comprises a third precast beam and a fourth precast beam, wherein the end parts of the third precast beam and the fourth precast beam are provided with extending steel bars and are vertically connected with the first precast beam and the second precast beam to form a cross-shaped node, the extending steel bars at the connecting end of the third precast beam extend between the extending steel bars of the first precast beam and the second precast beam and extend for necessary anchoring length to be vertically bent upwards, and the extending steel bars at the connecting end of the fourth precast beam extend between the extending steel bars of the second precast beam and the third precast beam and extend for necessary anchoring length to be vertically bent downwards.
According to the scheme, the further improvement is that the extending steel bars of the first precast beam or the second precast beam are divided into two rows along the beam height direction.
In the above scheme, a further improvement is that when the height of the beam section of the first precast beam is higher than that of the beam section of the second precast beam and the first precast beam is anchored, the extended steel bar at the connecting end of the first precast beam is bent vertically downwards after horizontally extending for a necessary anchoring length, and the extended steel bar at the connecting end of the second precast beam is bent vertically upwards after horizontally extending for a necessary anchoring length. The multi-beam connecting structure further comprises a third precast beam, wherein the lower part of the third precast beam is provided with extending steel bars and is vertically connected with the first precast beam and the second precast beam to form a T-shaped node, the beam section height of the third precast beam is lower than the beam section heights of the first precast beam and the second precast beam, and the extending steel bars at the connecting end of the third precast beam extend into the upper part of the extending steel bars of the second precast beam and extend for necessary anchoring length to be vertically bent upwards.
According to the scheme, the further improvement is that when the height of the beam section of the first precast beam is equal to the height of the beam section of the second precast beam and the first precast beam is anchored, the extending steel bars at the connecting end of the first precast beam are bent downwards vertically after extending downwards for the necessary anchoring length in an inclined mode, and the extending steel bars at the connecting end of the second precast beam are bent upwards vertically after extending horizontally for the necessary anchoring length.
The multi-beam connecting structure further comprises a third precast beam, wherein the end part of the third precast beam is provided with an extending steel bar and is vertically connected with the first precast beam and the second precast beam to form a T-shaped node, the beam section height of the third precast beam is equal to the beam section heights of the first precast beam and the second precast beam, and the extending steel bar at the connecting end of the third precast beam is lifted in the third precast beam, extends into the position above the extending steel bar of the second precast beam, extends for a necessary anchoring length and then is vertically bent upwards.
In order to solve the technical problem, the invention further provides a hoisting construction method of the multi-beam connecting structure, which comprises the steps of firstly obtaining and comparing the beam section height values of the precast beams to be hoisted in advance, and then sequentially hoisting according to the beam section height values of the precast beams from large to small, wherein the precast beam with the large beam section height value is hoisted before the precast beam with the small beam section height value. When the beam sections of the precast beams are the same in height, the precast beam extending downwards in the reinforcing steel bar bending anchor direction is selected to be hoisted firstly, and the precast beam extending upwards in the reinforcing steel bar bending anchor direction is hoisted later.
In order to solve the technical problem, the invention also provides a hoisting construction method of the multi-beam connecting structure, which comprises the following steps:
sequentially numbering the beam heights of the precast beams according to the sequence from high to low of the beam section heights of the precast beams;
and (3) compiling priority levels of the precast beams in the precast beams with the same beam section height according to the directions of the bent anchors of the steel bars extending out of the precast beams: the priority level of the precast beam extending downwards in the reinforcing steel bar bending anchor direction is greater than that of the precast beam extending upwards in the reinforcing steel bar bending anchor direction;
and hoisting the precast beams according to the sequence of the beam height numbers of the precast beams and the priority levels of the precast beams, so that the precast beam with the large beam section height is hoisted firstly, and the precast beam with the same beam section height, which extends out of the steel bar bending anchor, and is downwards hoisted firstly.
The number of the beam height adopts English letters, the same English letter represents that the beam section height is the same, the beam section height of the A is larger than the B, the beam section height of the B is larger than the C, and the like; the priority levels are represented by numbers, with "1" having a priority level greater than "2", "2" having a priority level greater than "3", and so on.
Compared with the prior art, the invention has the following advantages:
the construction method can consider the hoisting sequence of the construction process during or before the design of the precast beam, or strictly follow the preset sequence during hoisting, can avoid the problem of interference of reinforcing steel bars, and enables the PC component to smoothly fall;
the mounting precision of the precast beam is increased, the mounting error is reduced, and the hoisting engineering of the precast beam can be smoothly promoted;
and thirdly, the scheme of the invention can be popularized in other PC components, thereby increasing the overall hoisting construction efficiency and precision.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a third embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a fourth embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1, a first embodiment of a multi-girder connecting structure according to the present invention includes a first precast girder 1 and a second precast girder 2 having the same height H of a girder section and being anchored by bending each other, wherein an extended reinforcement at a connection end of the first precast girder is bent vertically downward after extending obliquely downward for a necessary anchoring length, an extended reinforcement at a connection end of the second precast girder is bent vertically upward after extending obliquely upward for a necessary anchoring length, and extended reinforcements at opposite connection ends of the first precast girder 1 and the second precast girder 2 are opposite in extending direction and are staggered with each other. When the multi-beam connecting structure is used for hoisting, the beam sections of the first precast beam 1 and the second precast beam 2 are the same in height, and the bending anchor direction of the first precast beam 1 is downward, so that the first precast beam 1 is selected to be hoisted firstly, and then the second precast beam 2 is hoisted, so that the problem of mutual interference of the extending steel bars of the first precast beam and the second precast beam can be avoided, and the PC component can be smoothly placed.
When the first precast beam 1 and the second precast beam 2 are anchored straight, the projecting rebar of the first precast beam connection end may extend obliquely downward, and the projecting rebar of the second precast beam connection end may extend obliquely upward. At the moment, because the beam section heights of the first precast beam 1 and the second precast beam 2 are the same, and the extending steel bars of the first precast beam 1 extend downwards in an inclined manner, the first precast beam 1 is selected to be hoisted, and then the second precast beam 2 is hoisted, so that the extending steel bars of the first precast beam and the second precast beam are prevented from interfering with each other, and the PC component is smoothly positioned.
Referring to fig. 2, a second embodiment of the multi-beam connecting structure of the present invention has substantially the same structure as the first embodiment, except that it further includes a third precast beam 3 having an end portion provided with protruding reinforcing bars and vertically connected to the first and second precast beams 1, 2 to form a "T" shaped node, the height H of the beam section of the third precast beam 3 is lower than the height H of the beam section of the first and second precast beams, and the protruding reinforcing bars at the connecting end of the third precast beam extend above the protruding reinforcing bars of the second precast beam and extend for a necessary anchoring length and then are vertically bent upward. When the multi-beam connecting structure is hoisted, because the beam section heights H of the first and second precast beams 1 and 2 are the same, the beam section heights H of the first and second precast beams 1 and 2 are greater than the beam section height H of the third precast beam 3, and the bending anchor direction of the first precast beam 1 is downward, the first precast beam 1 is selected to be hoisted firstly, then the second precast beam 2 is hoisted, and finally the third precast beam 3 is hoisted, so that the mutual interference of the extending reinforcing steel bars of the first, second and third precast beams can be avoided, and the PC component can be smoothly placed.
Referring to fig. 3, the structure of the third embodiment of the multi-girder connecting structure according to the present invention is substantially the same as the second embodiment except that the first precast girder 1 has a girder section height a greater than a girder section height B of the second precast girder 2, and the second precast girder 2 has a girder section height B greater than a girder section height C of the third precast girder 3. Therefore, when the multi-beam connecting structure is hoisted, the first precast beam 1 is selected to be hoisted firstly, then the second precast beam 2 is hoisted, and finally the third precast beam 3 is hoisted.
As shown in fig. 4, when the number of the protruding rebars in the precast beam is large, the protruding rebars of the first precast beam 1 or the second precast beam 2 are arranged in two rows in the beam height direction.
The multi-beam connecting structure in the second and third embodiments may further include a fourth precast beam, end portions of which are provided with protruding rebars and are vertically connected with the first, second, and third precast beams to form a cross-shaped node, wherein the protruding rebars at the connecting end of the third precast beam extend between the protruding rebars of the first and second precast beams and extend for a necessary anchoring length and then are vertically bent upward, and the protruding rebars at the connecting end of the fourth precast beam extend between the protruding rebars of the second and third precast beams and extend for a necessary anchoring length and then are vertically bent downward.
In the above embodiment, when the first precast beam 1 has a beam section height higher than that of the second precast beam 2 and is bent for anchoring, the protruding rebars at the connection end of the first precast beam may be bent vertically downward after horizontally extending for a necessary anchoring length, and the protruding rebars at the connection end of the second precast beam may also be bent vertically upward after horizontally extending for a necessary anchoring length.
In summary, the hoisting construction method of the multi-beam connection structure of the invention comprises the steps of firstly observing the beam section height of the precast beams to be hoisted in advance, and determining the hoisting sequence according to the sequence of the beam section height of each precast beam from high to low: the precast beam with the high beam section is hoisted firstly, and the precast beam with the low beam section is hoisted later. When the beam sections of the precast beams are the same in height, the precast beam extending downwards in the reinforcing steel bar bending anchor direction is selected to be hoisted firstly, and the precast beam extending upwards in the reinforcing steel bar bending anchor direction is hoisted later.
The hoisting construction method of the multi-beam connecting structure can also comprise the following steps:
sequentially numbering the beam heights of the precast beams according to the sequence from high to low of the beam section heights of the precast beams;
and (3) compiling priority levels of the precast beams in the precast beams with the same beam section height according to the directions of the bent anchors of the steel bars extending out of the precast beams: the priority level of the precast beam extending downwards in the reinforcing steel bar bending anchor direction is greater than that of the precast beam extending upwards in the reinforcing steel bar bending anchor direction;
and hoisting the precast beams according to the sequence of the beam height numbers of the precast beams and the priority levels of the precast beams, so that the precast beam with the large beam section height is hoisted firstly, and the precast beam with the same beam section height, which extends out of the steel bar bending anchor, and is downwards hoisted firstly.
The number of the beam height preferably adopts English letters, the same English letter represents that the beam section height is the same, the beam section height of the A is greater than the B, the beam section height of the B is greater than the C, and the rest can be done in the same way; the priority levels are represented by numbers, with "1" having a priority level greater than "2", "2" having a priority level greater than "3", and so on.
The invention is described above with reference to the accompanying drawings, and it is obvious that the implementation of the invention is not limited by the above-mentioned manner, and it is within the scope of the invention to adopt various modifications of the technical solution of the invention or to apply the concept and technical solution of the invention to other occasions without any modification.
Claims (13)
1. The utility model provides a many roof beams connection structure, includes first precast beam (1) and second precast beam (2) at least, its characterized in that, the butt joint of one end of first precast beam (1) and second precast beam (2) and through cast in situ concrete connection shaping as an organic whole, the link of first precast beam (1) and second precast beam (2) is equipped with respectively and stretches out the reinforcing bar, and the reinforcing bar that stretches out of first precast beam (1) and second precast beam (2) is opposite in the bending direction of butt joint department to stagger each other in horizontal extending direction.
2. A multi-girder connecting structure according to claim 1, wherein the protruding reinforcing bars of the connecting end of the first precast girder extend obliquely downward and the protruding reinforcing bars of the connecting end of the second precast girder extend obliquely upward when the protruding reinforcing bars of the first precast girder (1) and the second precast girder (2) are anchored straight.
3. The multi-girder connecting structure according to claim 1, wherein the first precast girder (1) and the second precast girder (2) have the same girder section height and when the protruding reinforcing bars are bent and anchored, the protruding reinforcing bars at the first precast girder connecting end are bent vertically downward after being inclined downward for a necessary anchoring length, and the protruding reinforcing bars at the second precast girder connecting end are bent vertically upward after being inclined upward for a necessary anchoring length.
4. A multi-girder connecting structure according to claim 3, further comprising a third precast girder (3) having protruding reinforcing bars at end portions thereof and vertically connected to the first and second precast girders to form a "T" shaped node, wherein the third precast girder has a girder section height lower than that of the first and second precast girders, and the protruding reinforcing bars of the connecting end of the third precast girder are vertically bent upward after protruding above the protruding reinforcing bars of the first and second precast girders and extending a necessary anchoring length.
5. A multi-girder connecting structure according to claim 3, further comprising third and fourth precast girders having protruding reinforcing bars at end portions thereof and vertically connected to the first and second precast girders to form a cross-shaped node, wherein the protruding reinforcing bars of the third precast girder connecting end extend between the protruding reinforcing bars of the first and second precast girders and are vertically bent upward after extending a necessary anchoring length, and the protruding reinforcing bars of the fourth precast girder connecting end extend between the protruding reinforcing bars of the second and third precast girders and are vertically bent downward after extending a necessary anchoring length.
6. A multi-girder connecting structure according to claim 3, wherein the projected reinforcing bars of the first or second precast girders are arranged in two rows in the height direction of the girders.
7. The multi-girder connecting structure according to claim 1, wherein the first precast girder (1) has a girder section height higher than that of the second precast girder (2) and is bent and anchored, the protruding reinforcing bars of the first precast girder connecting end are bent vertically downward after extending horizontally for a necessary anchoring length, and the protruding reinforcing bars of the second precast girder connecting end are bent vertically upward after extending horizontally for a necessary anchoring length.
8. A multi-girder connecting structure according to claim 7, further comprising a third precast girder (3) having protruding reinforcing bars at end portions thereof and vertically connected to the first and second precast girders to form a "T" -shaped node, wherein the third precast girder has a girder section height lower than that of the first and second precast girders, and the protruding reinforcing bars of the connecting end portion of the third precast girder extend above the protruding reinforcing bars of the second precast girder and extend for a necessary anchoring length and then are vertically bent upward.
9. The multi-girder connecting structure according to claim 1, wherein the first precast girder (1) has a girder section height equal to that of the second precast girder (2) and is bent, the protruding reinforcing bars of the first precast girder connecting end are bent vertically downward after being inclined downward for a necessary anchoring length, and the protruding reinforcing bars of the second precast girder connecting end are bent vertically upward after being horizontally extended for a necessary anchoring length.
10. A multi-girder connecting structure according to claim 9, which further comprises a third precast girder (3) having protruding reinforcing bars at end portions thereof and vertically connected to the first and second precast girders to form a "T" -shaped node, wherein the third precast girder has a girder section height equal to that of the first and second precast girders, and the protruding reinforcing bars of the connecting end of the third precast girder are raised in the third precast girder to protrude above the protruding reinforcing bars of the second precast girder and are vertically bent upward after extending a necessary anchoring length.
11. A hoisting construction method of the multi-beam connecting structure according to any one of the claims 1 to 10, characterized in that the beam section height values of the precast beams to be hoisted are obtained and compared first, and then hoisting is performed in sequence from the larger to the smaller of the beam section height values of the precast beams, wherein the precast beam with the larger beam section height value is hoisted before the precast beam with the smaller beam section height value.
12. The hoisting construction method of the multi-beam connecting structure according to claim 11, wherein when the beam cross-sectional heights of the plurality of precast beams are the same, the precast beam extending downward from the bent anchor direction of the reinforcing steel bar is selected to be hoisted first, and the precast beam extending upward from the bent anchor direction of the reinforcing steel bar is selected to be hoisted later.
13. A method for hoisting construction of a multi-girder connecting structure according to any one of claims 1 to 10, comprising the steps of:
sequentially numbering the beam heights of the precast beams according to the sequence from high to low of the beam section heights of the precast beams;
and (3) compiling priority levels of the precast beams in the precast beams with the same beam section height according to the directions of the bent anchors of the steel bars extending out of the precast beams: the priority level of the precast beam extending downwards in the reinforcing steel bar bending anchor direction is greater than that of the precast beam extending upwards in the reinforcing steel bar bending anchor direction;
and hoisting the precast beams according to the sequence of the beam height numbers of the precast beams and the priority levels of the precast beams, so that the precast beam with the large beam section height is hoisted firstly, and the precast beam with the same beam section height, which extends out of the steel bar bending anchor, and is downwards hoisted firstly.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711191286.6A CN108060781B (en) | 2017-11-24 | 2017-11-24 | Multi-beam connecting structure and hoisting construction method thereof |
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| CN201711191286.6A CN108060781B (en) | 2017-11-24 | 2017-11-24 | Multi-beam connecting structure and hoisting construction method thereof |
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| CN108060781A CN108060781A (en) | 2018-05-22 |
| CN108060781B true CN108060781B (en) | 2020-02-04 |
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| CN109492295B (en) * | 2018-11-05 | 2023-01-31 | 长沙远大住工智能科技有限公司 | Multi-beam connection structure hoisting information determination method and device, storage medium and equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424100A (en) * | 2008-12-09 | 2009-05-06 | 颜小荣 | Connecting apparatus of reinforced concrete precast member |
| CN204983143U (en) * | 2015-09-17 | 2016-01-20 | 东南大学 | End muscle precast concrete frame construction excels in |
| JP6125169B2 (en) * | 2012-08-06 | 2017-05-10 | 旭化成ホームズ株式会社 | Beam-column joint structure |
-
2017
- 2017-11-24 CN CN201711191286.6A patent/CN108060781B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101424100A (en) * | 2008-12-09 | 2009-05-06 | 颜小荣 | Connecting apparatus of reinforced concrete precast member |
| JP6125169B2 (en) * | 2012-08-06 | 2017-05-10 | 旭化成ホームズ株式会社 | Beam-column joint structure |
| CN204983143U (en) * | 2015-09-17 | 2016-01-20 | 东南大学 | End muscle precast concrete frame construction excels in |
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| CN108060781A (en) | 2018-05-22 |
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Effective date of registration: 20210305 Address after: 410000 Junction of Lusong Road and Dongfanghong Road, Changsha High-tech Development Zone, Changsha City, Hunan Province Patentee after: CHANGSHA BROAD HOMES INDUSTRIAL GROUP Co.,Ltd. Address before: 425000 West Jiuyi Avenue, high tech Industrial Park, Lengshuitan District, Yongzhou City, Hunan Province Patentee before: YONGZHOU YUANDA ARCHITECTURAL INDUSTRY Co.,Ltd. Patentee before: CHANGSHA BROAD HOMES INDUSTRIAL GROUP Co.,Ltd. |
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