CN110017032B - Method for improving plant structure by penetrating beam and adding column - Google Patents
Method for improving plant structure by penetrating beam and adding column Download PDFInfo
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- CN110017032B CN110017032B CN201910251291.4A CN201910251291A CN110017032B CN 110017032 B CN110017032 B CN 110017032B CN 201910251291 A CN201910251291 A CN 201910251291A CN 110017032 B CN110017032 B CN 110017032B
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- E—FIXED CONSTRUCTIONS
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- 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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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Abstract
The invention provides a method for beam-penetrating and column-adding in the reconstruction of a factory building structure, which comprises the following steps: measuring a cross beam to be measured; dividing the upright column according to measured data, and enclosing a cavity between the upper upright column and the lower upright column; hoisting the lower upright column to the lower part of the cross beam to be tested, and gradually hoisting the lower upright column to the installation part of the first side of the cross beam to be tested; hoisting the upper upright column to the upper part of the cross beam to be tested, and gradually hoisting the upper upright column to the mounting part on the second side of the cross beam to be tested; and welding and fixing the upper stand column and the lower stand column. According to the invention, the upright post is segmented according to the relevant data measured by the cross beam to be measured to obtain the upper upright post and the lower upright post which are matched with the cross beam to be measured, and then the upper upright post and the lower upright post are respectively hoisted and fixed to the corresponding mounting part of the cross beam to be measured, so that the connection is realized in a manner that the cross beam to be measured is embedded into the upright post, thereby realizing the beam penetrating and post adding on the premise of not damaging the bearing beam, the connecting joint of the upright post is complementary with the cross section of the bearing beam, and avoiding stress concentration.
Description
Technical Field
The invention relates to the technical field of steel structure construction, in particular to a method for beam penetrating and column adding in plant structure transformation.
Background
The central extension high-rise frame structure of large-span steel structure factory building is usually to former factory building stand reinforcement, increase, nevertheless has the main equipment in to the factory building, the structure factory building of platform bearing, stand reinforcement can't satisfy the requirement, need newly-increased factory building stand, but each layer platform of former structural framework of factory building all has the frame roof beam, and the stand can't pass each layer platform roof beam, and it is big to increase stand welding beam-adding engineering volume again to the platform roof beam to disintegrate, also has certain influence to the platform roof beam.
Disclosure of Invention
In view of the above, the invention provides a method for improving a plant structure to penetrate a beam and add a column, and aims to solve the problems that the work load is large and the working performance of a platform beam is influenced when an existing large-span steel structure plant is used for reinforcing the column.
The invention provides a method for beam-penetrating and column-adding in the reconstruction of a factory building structure, which comprises the following steps: a beam measuring step, measuring a beam to be measured; an upright column decomposition step, namely dividing the newly added upright column according to the data measured in the cross beam measurement step to obtain an upper upright column and a lower upright column, wherein a cavity matched with the cross section of the cross beam to be measured is enclosed between the upper upright column and the lower upright column and is used for being clamped on the cross beam to be measured; a lower upright column hoisting step, namely hoisting the lower upright column to the position below the cross beam to be detected and gradually hoisting the lower upright column to the installation part of the first side of the cross beam to be detected so as to enable the separation seam of the lower upright column to be pressed against and welded on the first side of the cross beam to be detected; hoisting an upper stand column, namely hoisting the upper stand column to the upper part of the cross beam to be measured and gradually hoisting the upper stand column to the mounting part of the second side of the cross beam to be measured so as to enable a separation seam of the upper stand column to be pressed against and welded on the second side of the cross beam to be measured; and a fixing step, namely welding and fixing the upper stand column and the lower stand column so as to enable the cross beam to be detected to be embedded on the stand columns.
Further, according to the method for reconstructing the plant structure to penetrate the beam and the column, the fixing step further comprises the following steps: and a first reinforcing step, namely arranging a first reinforcing plate between the transverse web plate of the beam to be measured and the upper plate arranged at the top of the upper upright post for reinforcement.
Further, according to the method for reconstructing the plant structure to penetrate the beam and the column, the first reinforcement step specifically includes: and arranging the reinforcing plate between the transverse web plate of the beam to be measured and the upper plate arranged at the top of the upper upright post, and welding the reinforcing plate.
Further, according to the method for reconstructing the plant structure to penetrate the beam and the column, the fixing step further comprises the following steps: and a second reinforcing step, namely arranging a second reinforcing plate between the web plate of the cross beam to be measured and the lower plate arranged at the bottom of the lower upright post for reinforcement.
Further, according to the method for reconstructing the plant structure to penetrate the beam and the column, the second reinforcement step specifically includes: and arranging the second reinforcing plate between the transverse web plate of the beam to be measured and the lower plate arranged at the bottom of the lower upright post, and welding the second reinforcing plate.
Further, according to the method for improving the plant structure to penetrate the beam and the column, the following steps are also included before the step of hoisting the lower upright column: and a hoisting preparation step, namely selecting two pulley hoisting points above the beam to be tested, and arranging a pulley block and a lifting hook at the pulley hoisting points for hoisting the upper stand column and the lower stand column.
Further, in the method for modifying the plant structure to penetrate the beam and add the column, in the step of hoisting the upper upright column or the step of hoisting the lower upright column, the upper upright column or the lower upright column is hoisted in a relay mode through two groups of pulley blocks and a lifting hook.
Further, in the method for modifying the plant structure to penetrate the beam and add the column, in the step of hoisting the lower stand column, when the lower stand column is hoisted, only the first lifting hook arranged at the first pulley hoisting point is used for hoisting the lower stand column until the lower part of the cross beam to be tested is reached, and the second lifting hook arranged at the second pulley hoisting point is not involved in any stress; and/or in the step of hoisting the upper stand column, when the upper stand column is hoisted, the first lifting hook is arranged at the position of the first pulley lifting point to be used for hoisting the upper stand column to the position above the cross beam to be tested, and the second lifting hook is arranged at the position of the second pulley lifting point to not participate in any stress.
Further, in the method for modifying the plant structure to penetrate the beam and add the column, in the step of hoisting the lower stand column, when the lower stand column rises to the position below the cross beam to be measured, the first lifting hook performs a hook falling action, the second lifting hook stops operating, so that the weight of the lower stand column is gradually transferred from the first lifting hook to the second lifting hook, and after the first lifting hook is not stressed, the lower stand column is adjusted to the installation position of the second side of the cross beam to be measured by using the second lifting hook; and/or the presence of a gas in the gas,
in the upper column hoisting step, the upper column is lifted up when the top of the cross beam to be detected is detected, the first lifting hook is used for hooking, the second lifting hook is stopped to operate, so that the weight of the upper column is gradually transferred from the first lifting hook to the second lifting hook, and after the first lifting hook is not stressed, the second lifting hook is used for adjusting the upper column to the installation position of the first side of the cross beam to be detected.
Further, according to the method for modifying the plant structure to penetrate the beam and add the column, the beam measuring step specifically comprises the following steps: and when the cross section of the cross beam to be measured is of an I-shaped structure, measuring the thickness and the width of the transverse web plate and the two longitudinal flanges of the cross beam to be measured.
According to the method for modifying the through beam and the column of the plant structure, provided by the invention, the stand column is segmented according to relevant data measured by the cross beam to be measured, namely, the stand column is prefabricated independently according to the connection form of each layer of the bearing beam, so that an upper stand column and a lower stand column which are matched with the cross beam to be measured, namely the bearing beam, are obtained, the upper stand column and the lower stand column are respectively hoisted and fixed to the installation part corresponding to the cross beam to be measured, the connection is realized in a form that the cross beam to be measured is embedded into the stand column, so that the through beam and the column are realized on the premise that the bearing beam is not damaged, the connection stress section of the stand column is complementary with the cross section of the bearing beam, the.
Particularly, the hoisting of the upper stand column and the lower stand column adopts an aerial relay mode to ensure that the upper stand column and the lower stand column can be accurately and properly positioned, and the connecting area among the upper stand column, the lower stand column and the cross beam to be measured is further increased to further avoid stress concentration.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a structural block diagram of a method for modifying a plant structure to penetrate a beam and add a column according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a plant structure according to an embodiment of the present invention;
FIG. 3 is a partially exploded view of an upper column and a lower column provided in accordance with an embodiment of the present invention;
fig. 4 is a partially exploded view of the upper column, the lower column and the cross beam to be measured according to the embodiment of the present invention;
FIG. 5 is a schematic diagram of a process of hoisting a column in the method for modifying a plant structure to pass through a beam and add a column according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a plant structure provided by an embodiment of the present invention after a beam is transformed and a column is added.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 6, preferred structures of the method for modifying a through beam and a column of a plant structure according to an embodiment of the present invention are shown. As shown, the method comprises the following steps:
and a beam measuring step S1, measuring the beam to be measured.
Specifically, the cross beam 1 to be measured is an i-shaped structure, and is horizontally arranged to form a factory building structure. First, the dimension of the beam 1 to be measured is measured. And if the cross section of the cross beam 1 to be measured is of an I-shaped structure, measuring the thickness and the width of a transverse web plate 11 and two longitudinal flanges 12 of the cross beam 1 to be measured. Certainly, the cross beam 1 to be measured may also be of other structures, which is not limited in this embodiment, for example, when the cross section of the cross beam 1 to be measured is a circular structure, the diameter of the cross beam needs to be measured, so that the cavity separated between the upper column 21 and the lower column 22 divided by the column 2 is adapted to the cross beam 1 to be measured, and the cross beam 1 to be measured is clamped between the upper column 21 and the lower column 22. Of course, the height between the adjacent beams 1 to be measured can also be measured, so that the heights between the upper upright 21 and the lower upright 22 and the adjacent beams 1 to be measured are matched.
And an upright column decomposition step S2, wherein the newly added upright column is divided according to the data measured in the beam measurement step to obtain an upper upright column and a lower upright column, and a cavity matched with the cross section of the beam to be measured is enclosed between the upper upright column and the lower upright column and is clamped on the beam to be measured.
Specifically, newly-increased stand 2 sets up connected node at every layer and 1 intersection of crossbeam that awaits measuring, for guaranteeing stand 2 not destroy the crossbeam 1's that awaits measuring wholeness when the installation, according to the size unloading of crossbeam 1 that awaits measuring, promptly
The data measured in the beam measuring step S1 is divided to obtain the upper column 21 and the lower column 22, the upper column 21 and the lower column 22 are structured as shown in fig. 3 and 4, so that the beam 1 to be measured can be wedged between the upper column 21 and the lower column 22 by the upper column 21 and the lower column 22, and the matching openings 26 are provided on both the left and right sides of the upper column 21 and the lower column 22, so as to facilitate the wedging of the beam 1 to be measured and the positioning between the upper column 21 and the lower column 22. The separation seam between the upper upright post 21 and the lower upright post 22 is complementary with the cross section of the beam 1 to be measured, so that the upright post 2 is inosculated with the cross section of the beam 1 to be measured, the connection area between the two is increased, and the connection stability between the two is improved. The newly added upright post 2 comprises: the column body 23, the upper support plate 24 disposed at the top of the column body 23 (relative to the position of fig. 5), and the lower support plate 25 disposed at the bottom of the column body 23 (relative to the position of fig. 5), wherein the column body 23 is a vertically disposed plate structure, the lower support plate 25 is a horizontally disposed plate structure, the upper support plate 24 is an i-shaped structure disposed horizontally, and the upper web 241 of the column body 23, the lower support plate 25, and the upper support plate 24 are h-shaped. The position of the vertical column 2 is divided at the position of the vertical column body 23, namely, the cross beam 1 to be measured is wedged into the vertical column body 23.
And a hoisting preparation step S3, selecting two hoisting points above the beam to be measured, and arranging a pulley block at the hoisting points for hoisting the upper upright column and the lower upright column.
Specifically, two pulley hoisting points a and B are arranged on a hoisting channel 6 of the upright 2 before the upright 2 is installed, and are used for hoisting the upright 2, and two lifting hooks, namely a first lifting hook 3 and a second lifting hook 4, are arranged and connected to the pulley hoisting points a and B through a pulley block. In order to facilitate the hoisting of the upright 2, preferably, the first hook 3 and the second hook 4 are hung on the upright 2, so as to hoist the upper upright 21 and/or the lower upright 22 by the first hook 3 and the second hook 4. The lifting channel 6 is arranged above the cross beam 1 to be tested and used for lifting and lifting the upright post 2.
The column disassembling step S2 is performed after the beam measuring step S1, and there is no sequence between the hoisting preparation step S3 and the beam measuring step S1 and the column disassembling step S2, that is, the sequence of the three steps may be the hoisting preparation step S3, the beam measuring step S1, and the column disassembling step S2, or the beam measuring step S1, the hoisting preparation step S3, and the column disassembling step S2, which is not limited in this embodiment.
And a lower upright column hoisting step S4, hoisting the lower upright column to the lower part of the cross beam to be measured, and gradually hoisting the lower upright column to the installation part of the first side of the cross beam to be measured so that the separation seam of the lower upright column is pressed against and connected with the first side of the cross beam.
Specifically, first, the first hook 3 and the second hook 4 are hung on the lower column 22 to hoist the lower column 22 through the two pulley blocks, the first hook 3 and the second hook 4. Then, hoisting the lower upright post 22, and when hoisting the lower upright post 22, only using the first lifting hook 3 arranged at the first pulley lifting point a to hoist the lower upright post 22 to the position below the cross beam 1 to be measured (relative to the position shown in fig. 3), arranging the second lifting hook 4 at the second pulley lifting point B to not participate in any stress, and only accompanying the first lifting hook 3 to do a hoisting action; preferably, the first hook 3 hoists the lower upright column 22 to a first side (the left side as shown in fig. 3) below the cross beam 1 to be measured; when the lower upright post 22 rises above the cross beam 1 to be measured, the first lifting hook 3 performs a hook falling action, the second lifting hook 4 stops operating, so that the weight of the lower upright post 22 is gradually transferred from the first lifting hook 3 to the second lifting hook 4, after the first lifting hook 3 is not stressed, the second lifting hook 4 is used for adjusting the lower upright post 22 to the installation part of the first side of the cross beam 1 to be measured, and the separation seam of the lower upright post 22 is pressed on the first side of the cross beam to be measured, namely the cutting seam of the cross beam 1 to be measured is superposed with the cutting seam of the lower upright post 22; finally, the separation seam of the lower upright column 22 and the cross beam 1 to be measured are welded to realize the connection and fixation between the lower upright column 22 and the cross beam 1 to be measured, and the specific process can be seen in fig. 5. That is to say, the lower column 22 is hoisted in a relay manner through two sets of pulley blocks and hooks, so as to ensure the accuracy of the hoisting position of the lower column 22, and further ensure the accuracy of the installation position of the lower column 22.
And an upper upright column hoisting step S5, hoisting the upper upright column to the second side above the cross beam to be measured, and gradually hoisting the upper upright column to the mounting part of the second side of the cross beam to be measured so that the separation seam of the upper upright column is pressed against and connected with the second side of the cross beam to be measured.
Specifically, first, the first hook 3 and the second hook 4 are hung on the upper column 21 to hoist the upper column 21 through the two pulley blocks, the first hook 3 and the second hook 4. Then, hoisting the upper upright post 21, and when hoisting the upper upright post 21, only using the first lifting hook 3 arranged at the first pulley lifting point a to hoist the upper upright post 21 to the position above the cross beam 1 to be measured (relative to the position shown in fig. 3), arranging the second lifting hook 4 at the second pulley lifting point B to not participate in any stress, and only accompanying the first lifting hook 3 to do a hoisting action; preferably, the first hook 3 hoists the upper column 21 to a second side (right side as shown in fig. 3) above the cross beam 1 to be measured; finally, when the upper upright post 21 rises above the cross beam 1 to be measured, the first lifting hook 3 performs a hook falling action, the second lifting hook 4 stops operating, so that the weight of the upper upright post 21 is gradually transferred from the first lifting hook 3 to the second lifting hook 4, after the first lifting hook 3 is not stressed, the upper upright post 21 is adjusted to the installation part of the second side of the cross beam 1 to be measured by using the second lifting hook 4, the separation seam of the upper upright post 21 is pressed on the second side of the cross beam to be measured, namely, the cutting seam of the cross beam 1 to be measured and the cutting seam of the upper upright post 21 coincide, and the specific process can be seen in fig. 5. That is to say, the upper upright 21 is hoisted in a relay manner through two groups of pulley blocks and hooks, so as to ensure the accuracy of the hoisting position of the upper upright 21 and further ensure the accuracy of the installation position of the upper upright 21. The installation mode of the upper upright post 21 and the lower upright post 22 adopts an insertion mode, so that the cutting seams of the beam 1 to be measured and the upright posts 2 are overlapped.
And a fixing step S6, welding and fixing the upper upright column and the lower upright column so as to enable the cross beam to be detected to be embedded on the upright columns.
Specifically, the separation seam that coincides between last stand 21 and the lower stand 22 is welded fastening to make the crossbeam 1 that awaits measuring inlay and establish on stand 2, and then realize the reinforcement to factory building structure spandrel girder under the prerequisite of not demolising original spandrel girder, with the beam is worn in the transformation of realization factory building structure and the post is added.
And a first reinforcing step S7, arranging a first reinforcing plate between the transverse web plate of the beam to be measured and the upper plate arranged at the top of the upper upright post for reinforcing.
Specifically, in order to further improve the effect of reinforcing the bearing beam of the plant structure, preferably, the first reinforcing plate 5 is arranged between the transverse web plate 11 of the cross beam 1 to be measured and the upper supporting plate 24 arranged at the top of the upper upright post 21 for reinforcement. Wherein, set up first reinforcing plate 5 and play the strengthening rib effect between first reinforcing plate 5, horizontal web 11 and the last web 241 of going up backup pad 24, preferably, pass through welded fastening between first reinforcing plate 5, horizontal web 11 and the last web 241 of going up backup pad 24 to improve the reinforcing effect of first reinforcing plate 5, improve its intensity.
And a second reinforcing step S8, arranging a second reinforcing plate between the transverse web plate of the beam to be measured and the lower plate arranged at the bottom of the lower upright post for reinforcing.
Specifically, in order to further improve the effect of reinforcing the bearing beam of the plant structure, it is preferable that the second reinforcing plate 7 is arranged between the transverse web 11 of the cross beam 1 to be measured and the lower supporting plate 25 arranged at the bottom of the lower upright column 22 for reinforcement. The second reinforcing plate 7 is arranged among the second reinforcing plate 7, the transverse web 11 and the lower supporting plate 25 to play a role of reinforcing ribs, and preferably, the second reinforcing plate 7, the transverse web 11 and the lower supporting plate 25 are fixed through welding to improve the reinforcing effect of the second reinforcing plate 7.
There is no sequence between the first reinforcement step S7 and the second reinforcement step S8.
In this embodiment, each two cross beams can be reinforced by the method, the bottom of the lower reinforced upright column below the lowest cross beam can be fixed on the ground or a working surface, the top of the upper reinforced upright column above and below the highest cross beam can be fixed on the top wall of a factory building structure, and the upright column between the two cross beams can be used as the lower upright column of the upper cross beam for reinforcement and can also be used as the upper upright column of the lower cross beam for fixation.
In summary, in the method for modifying a plant structure to penetrate a beam and add a column provided in this embodiment, the column 2 is segmented according to the relevant data measured by the beam 1 to be measured, that is, the column 2 is prefabricated separately according to the connection form of each layer of the bearing beam, so as to obtain the upper column 21 and the lower column 22 that are adapted to the beam 1 to be measured, that is, the bearing beam, so as to hoist and fix the upper column 21 and the lower column 22 to the installation position corresponding to the beam 1 to be measured, so as to realize connection in a form of embedding the beam 1 to be measured into the column 2, so as to realize beam penetration and column addition without damaging the bearing beam, and the connection stress section of the column 2 is complementary to the cross section of the bearing beam, so as to avoid stress concentration and ensure the structural stability thereof.
In particular, the hoisting of the upper column 21 and the lower column 22 adopts an air relay mode to ensure that the upper column 21 and the lower column 22 can be accurately and properly positioned, and the connection area between the upper column 21 and the lower column 22 and the cross beam 1 to be measured is further increased to further avoid stress concentration.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A method for improving a plant structure by penetrating beams and adding columns is characterized by comprising the following steps:
a beam measuring step, namely measuring size data of a beam to be measured;
an upright column decomposition step, namely dividing the newly added upright column according to the data measured in the cross beam measurement step to obtain an upper upright column and a lower upright column, wherein a cavity matched with the cross section of the cross beam to be measured is enclosed between the upper upright column and the lower upright column and is used for being clamped on the cross beam to be measured;
a lower upright column hoisting step, namely hoisting the lower upright column to the position below the cross beam to be detected and gradually hoisting the lower upright column to the installation part of the first side of the cross beam to be detected so as to enable the separation seam of the lower upright column to be pressed against and welded on the first side of the cross beam to be detected;
hoisting an upper stand column, namely hoisting the upper stand column to the upper part of the cross beam to be measured and gradually hoisting the upper stand column to the mounting part of the second side of the cross beam to be measured so as to enable a separation seam of the upper stand column to be pressed against and welded on the second side of the cross beam to be measured;
and a fixing step, namely welding and fixing the upper stand column and the lower stand column so as to enable the cross beam to be detected to be embedded on the stand columns.
2. The method for reconstructing the plant structure to penetrate the beam and the column according to claim 1, wherein the step of fixing further comprises the following steps:
and a first reinforcing step, namely arranging a first reinforcing plate between the transverse web plate of the cross beam to be measured and the upper supporting plate arranged at the top of the upper upright post for reinforcement.
3. The method for reconstructing the plant structure to penetrate the beam and the column according to claim 2, wherein the first reinforcement step specifically comprises:
and arranging the first reinforcing plate between the transverse web plate of the beam to be measured and the upper supporting plate arranged at the top of the upper stand column, and welding the first reinforcing plate.
4. The method for reconstructing a beam-through and a column-through of a factory building structure according to any one of claims 1 to 3, wherein the fixing step further comprises the following steps:
and a second reinforcement step of arranging a second reinforcement plate between the transverse web plate of the beam to be measured and the lower support plate arranged at the bottom of the lower upright post for reinforcement.
5. The method for reconstructing the plant structure to penetrate the beam and the column according to claim 4, wherein the second reinforcement step specifically comprises:
and arranging the second reinforcing plate between the transverse web plate of the beam to be tested and the lower supporting plate arranged at the bottom of the lower upright post, and welding the second reinforcing plate.
6. The method for reconstructing the plant structure to penetrate the beam and the column according to any one of claims 1 to 3, wherein the step of hoisting the lower column further comprises the following steps:
and a hoisting preparation step, namely selecting two pulley hoisting points above the beam to be tested, and arranging a pulley block and a lifting hook at the pulley hoisting points for hoisting the upper stand column and the lower stand column.
7. The method for modifying the plant structure to pass through the beam and the column according to claim 6,
and in the step of hoisting the upper upright column or the step of hoisting the lower upright column, hoisting the upper upright column or the lower upright column by adopting a relay mode through two groups of pulley blocks and a lifting hook.
8. The method for modifying the plant structure to pass through the beam and the column according to claim 7,
in the lower upright column hoisting step, when the lower upright column is hoisted, only the first lifting hook arranged at the first pulley hoisting point of the two pulley hoisting points is used for hoisting the lower upright column until the lower part of the cross beam to be tested, and the second lifting hook arranged at the second pulley hoisting point of the two pulley hoisting points does not participate in any stress; and/or the presence of a gas in the gas,
in the step of hoisting the upper stand column, when the upper stand column is hoisted, only the first lifting hook arranged at the first pulley hoisting point in the two pulley hoisting points is used for hoisting the upper stand column to the position above the cross beam to be tested, and the second lifting hook arranged at the second pulley hoisting point in the two pulley hoisting points does not participate in any stress.
9. The method for modifying the plant structure to pass through the beam and the column according to claim 8,
in the step of hoisting the lower stand column, when the lower stand column is hoisted below the cross beam to be tested, the first lifting hook performs a hook falling action, the second lifting hook stops operating, so that the weight of the lower stand column is gradually transferred from the first lifting hook to the second lifting hook, and after the first lifting hook is not stressed, the lower stand column is adjusted to the installation part on the second side of the cross beam to be tested by using the second lifting hook; and/or the presence of a gas in the gas,
in the upper column hoisting step, the upper column is lifted up when the top of the cross beam to be detected is detected, the first lifting hook is used for hooking, the second lifting hook is stopped to operate, so that the weight of the upper column is gradually transferred from the first lifting hook to the second lifting hook, and after the first lifting hook is not stressed, the second lifting hook is used for adjusting the upper column to the installation position of the first side of the cross beam to be detected.
10. The method for reconstructing a plant structure through beam and column according to any one of claims 1 to 3, wherein the beam measuring step specifically comprises:
and when the cross section of the cross beam to be measured is of an I-shaped structure, measuring the thickness and the width of the transverse web plate and the two longitudinal flanges of the cross beam to be measured.
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| CN108222260A (en) * | 2018-03-09 | 2018-06-29 | 新昌县丽晶工业产品设计有限公司 | A kind of steel I-beam Column border node and its construction method |
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