CN113323405A - Sliding construction method applied to large-span steel structure - Google Patents
Sliding construction method applied to large-span steel structure Download PDFInfo
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- CN113323405A CN113323405A CN202110648919.1A CN202110648919A CN113323405A CN 113323405 A CN113323405 A CN 113323405A CN 202110648919 A CN202110648919 A CN 202110648919A CN 113323405 A CN113323405 A CN 113323405A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 135
- 239000010959 steel Substances 0.000 title claims abstract description 135
- 238000010276 construction Methods 0.000 title claims abstract description 50
- 238000003466 welding Methods 0.000 claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 14
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 238000013461 design Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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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
- 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
- E04G21/16—Tools or apparatus
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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
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
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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
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
Abstract
The invention provides a slippage construction method applied to a large-span steel structure, which comprises the following steps: the construction preparation, the pre-buried installation of track, the installation of the track that slides, steel construction welding hoist and mount, hydraulic pressure pushes away single sliding, the articulated subregion of steel member, hydraulic pressure pushes away the subregion and slides and step such as surplus subregion steel member dress, this one kind is applied to the construction method that slides of large-span steel construction, through setting up pre-buried track before the main part is pour, set up the track that slides on pre-buried track before the steel member hoist and mount, utilize the hydraulic pressure to push away the system and carry out the construction that slides of steel member subregion, each item difficult problem in the construction of large-span steel construction has successfully been solved, steel construction engineering efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of constructional engineering steel structure installation, in particular to a sliding construction method applied to a large-span steel structure.
Background
In view of the large-span steel construction site in the building field place is restricted, and the span is great, and steel member weight is great, and on-the-spot hoist and mount has great the degree of difficulty, and the articulated welding quality of steel member is difficult to be ensured, and is shorter to the time of a project, in the great steel construction engineering of span, conventional steel construction hoist and mount construction can't satisfy the engineering requirement. In recent years, the method for solving the problems in the construction of the large-span steel structure has not been a breakthrough innovation in the aspect of equipment type selection.
Disclosure of Invention
The embodiment of the invention provides a construction method applied to large-span steel structure slippage, which is characterized in that an embedded track is arranged before main body pouring, a slippage track is arranged on the embedded track before a steel member is hoisted, and a hydraulic pushing system is utilized to carry out steel member partition slippage construction, so that various problems in large-span steel structure construction are successfully solved, and the construction efficiency of steel structure engineering is greatly improved.
In view of the above problems, the technical solution proposed by the present invention is:
a slippage construction method applied to a large-span steel structure comprises the following steps:
s1, construction preparation, namely checking the weight of the steel member in construction, the configuration of the crane and the bearing capacity of an operation area, and positioning and paying off by using a measuring instrument in combination with a construction drawing;
s2, pre-embedding and installing the rails, and arranging the pre-embedded rails on the lower steel beam before pouring the concrete beam;
s3, installing the sliding rail, connecting and fixing the sliding rail and the pre-buried rail, and setting positioning points on the sliding rail according to the plan of a drawing;
wherein, in the step S3,
i, a sliding track is used for bearing, guiding and transversely limiting the horizontal displacement of a support below a rigid member, the central line of the sliding track is overlapped with the central line of the support by using a measuring instrument, the sliding track is fixedly welded with an embedded track arranged on a concrete beam, and the side baffle is made of Q235B section steel;
II, two sides of the channel steel are obliquely arranged, so that the support can be effectively prevented from being clamped due to the unevenness of the slide way in the sliding support process;
III, for guaranteeing the levelness of slide internal surface, reduce the hindrance of the in-process that slides, reduce the coefficient of sliding friction, the slide is when laying:
firstly, the splicing position of the sliding track is required to ensure the flatness of the sliding track, and a height difference is avoided;
secondly, the lapping position of the sliding rail and the concrete column is to ensure that the sliding bottom plate can pass through smoothly;
the deviation between the center line of the sliding beam and the sliding center line is controlled within +/-3 mm;
fourthly, the installation standard of the side check block of the slideway is as follows: in order to ensure that a sufficient contact surface is formed between the slideway side baffle plate and the pushing support, the arrangement form of the slideway side baffle plate is strictly installed according to the design form of a drawing; the height of the welding line between the sliding way side stop block and the sliding track meets the design requirement so as to meet the use requirement of resisting the pushing counterforce; the initial mounting positions of the side stop blocks on all the sliding tracks are at the same axis position, and the initial point is reset at each axis position so as to reduce the accumulated mounting error and meet the requirement of the sliding synchronism; the installation error of the side stop blocks at two sides of the same sliding track is less than 1mm, and the distance error of the side stop blocks of the adjacent sliding tracks is less than 3 mm;
s4, welding and hoisting a steel structure, namely assembling and welding a first steel member of the first partition, hoisting the first steel member to a positioning point on the sliding track, and inserting a support arranged at the bottom of the steel structure into the sliding track;
s5, hydraulic pushing single steel member to slide, connecting the hydraulic pushing system with the steel member, and sliding the first steel member in the first partition to the planning positioning direction by using the hydraulic pushing system and a synchronous control system;
s6, steel members are hinged into partitions, a first partition second steel member is assembled and welded and then hoisted to a positioning point on a sliding track, a hydraulic pushing system is connected with the second steel member, the hydraulic pushing system is used, the first partition second steel member slides towards the next planned positioning direction through a synchronous control system, secondary beams and temporary support reinforcement are installed, the axial dimension of the members is corrected, and high-strength bolts connected with the primary and secondary beams are screwed, so that the first partition first steel member and the second member form an integral frame beam;
s7, sliding the hydraulic pushing subareas, connecting the hydraulic pushing system with the frame beam, pushing the reinforced frame beam to a designed position by using the hydraulic pushing system, and placing the steel beam at a pre-fixed position by using a hydraulic jack;
s8, residual partitioned steel members are assembled, the steps S4-S7 are repeated, the steel members of the residual other partitions are hoisted and slid to a specified position, secondary beams among the partitions can be constructed in a tower crane hoisting installation mode, finally, steel frame beams are directly hoisted in place, the secondary beams are installed well by high-strength bolts, a sensing detection system is used for detecting whether the overall size has deviation, and if the deviation exists, the deviation is timely processed.
As a preferable technical solution of the present invention, the sliding rail in step S3 includes a channel steel and a side stopper, the channel steel is disposed on one side of the top of the embedded rail, the side stopper is disposed on the other side of the top of the embedded rail, a sliding block is disposed inside the channel steel, and the sliding block contacts with the support.
As a preferable technical scheme of the invention, the center line of the sliding track is superposed with the center line of the support.
As a preferable technical scheme of the invention, the sliding block is welded with the bottom of the channel steel, and the center line of the sliding block is superposed with the center line of the channel steel.
As a preferable technical scheme of the invention, in the welding process, the humidity of the welding environment is more than 5 ℃, the temperature of the environment is lower than 80%, and rust, oxygen skin, oil stain and water in the area to be welded and the range of 30-50 mm on two sides need to be removed before welding.
As a preferred technical scheme, the hydraulic pushing system comprises a hydraulic pusher and a hydraulic pump source system, an output shaft of a hydraulic cylinder arranged at the front end of the hydraulic pusher is rotatably connected with the steel member, the rear end of the hydraulic pusher is connected with the sliding track through a pushing device, and the pushing device is in contact with the side stop block.
As a preferable technical scheme of the invention, the side stopper is connected with the top of the embedded rail in a welding manner, and the side of the side stopper, which is in contact with the jacking device, is not welded with the top of the embedded rail, and the non-welded side is the movement direction of the hydraulic ejector pushing the steel member.
In a preferred embodiment of the present invention, the number of the side stoppers is at least greater than one, and the distances between the adjacent side stoppers are uniform.
Compared with the prior art, the invention has the beneficial effects that: the construction method is applied to the large-span steel structure sliding construction method, the pre-buried tracks are arranged before main body pouring, the sliding tracks are arranged on the pre-buried tracks before steel members are hoisted, the hydraulic pushing system is used for conducting steel member partition sliding construction, various problems in large-span steel structure construction are successfully solved, and the construction efficiency of steel structure engineering is greatly improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
FIG. 1 is a schematic flow chart of a construction method for large-span steel structure slippage according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a track glide system according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a working state of the hydraulic ejector according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a hydraulic pushing system disclosed in the embodiment of the present invention.
Reference numerals: 100. a rail glide system; 101. pre-burying a track; 102. a sliding track; 10201. channel steel; 10202. a side stop block; 10203. a sliding block; 200. a hydraulic jacking system; 201. a hydraulic ejector; 202. a hydraulic pump source system; 300. a steel member; 400. and (4) a support.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1-4, a construction method for large-span steel structure slippage includes the following steps:
s1, construction preparation, namely checking the weight of the steel member 300 in construction by using a crane and the configuration thereof and the bearing capacity of an operation area, and positioning and paying off by using a measuring instrument in combination with construction drawings so as to reasonably make mechanical configuration and planar arrangement;
s2, pre-burying and installing the rails, and arranging the pre-buried rails 101 on the lower steel beam before pouring the concrete beam;
s3, installing a sliding rail, connecting and fixing the sliding rail 102 and an embedded rail 101, and setting a positioning point on the sliding rail 102 according to a drawing plan, wherein the sliding rail 102 includes a channel 10201 and a side stopper 10202, the channel 10201 is arranged on one side of the top of the embedded rail 101, the side stopper 10202 is arranged on the other side of the top of the embedded rail 101, the slide side stopper 10202 plays a role in directly resisting a counterforce and sliding precision control of a pusher, a sliding block 10203 is arranged inside the channel 10201, the sliding block 10203 is in contact with the support 400, a steel member 300 slides on the sliding block 10203 through the support 400, the channel 10201 arranged in the sliding rail 102 moves to a predetermined position, the sliding block 10203 is welded to the bottom of the channel 10201, and the center line of the sliding block 10203 coincides with the center line of the channel 10201;
i, the sliding rail 102 is used for bearing, guiding and transversely limiting the horizontal displacement of a support 400 below a rigid member, the center line of the sliding rail 102 is overlapped with the center line of the support 400 by using a measuring instrument, the sliding rail 102 is fixedly welded with an embedded rail 101 arranged on a concrete beam, and the side baffle is made of Q235B section steel;
II, two sides of the channel steel 10201 are obliquely arranged, so that the support 400 can be effectively prevented from being clamped due to uneven slide ways in the process of sliding the support 400;
III, for guaranteeing the levelness of slide internal surface, reduce the hindrance of the in-process that slides, reduce the coefficient of sliding friction, the slide is when laying:
firstly, the splicing position of the sliding track 102 is ensured to be smooth, and the height difference is avoided;
secondly, the lapping position of the sliding rail 102 and the concrete column is to ensure that the sliding bottom plate can pass through smoothly;
the deviation between the center line of the sliding beam and the sliding center line is controlled within +/-3 mm;
installation standard of slide side block 10202: in order to ensure that an enough contact surface is formed between the slide way side baffle 10202 and the pushing support 400, the arrangement form of the slide way side baffle is strictly installed according to the design form of a drawing; the height of the welding seam between the slide way side block 10202 and the sliding rail 102 is required to meet the design requirement so as to meet the use requirement of resisting the pushing counterforce; the initial installation positions of the side stoppers 10202 on all the sliding rails 102 are at the same axial position, and the initial point is reset at each axial position to reduce the accumulated installation error and meet the requirement of sliding synchronism; the installation error of the side stoppers 10202 at two sides of the same sliding track 102 is smaller than 1mm, and the distance error of the adjacent sliding track side stoppers 10202 is smaller than 3 mm; welding is strictly prohibited in front of the side stopper 10202 (in the sliding forward direction);
as a preferred embodiment, the number of side stops 10202 is at least greater than one, the distance between the adjacent side blocks 10202 is consistent, the side blocks 10202 are connected with the top of the embedded track 101 in a welding manner, and the side of the side block 10202 contacting with the puller is not welded with the top of the pre-buried track 101, the non-welded side is the moving direction of the hydraulic pusher 201 pushing the steel member 300, the non-welding side of the side block 10202 moving direction is used for preventing the shape of the welding seam from being inconsistent with that of other parts after the welding is completed, therefore, the phenomenon that the pushing stroke of each pushing is inconsistent due to the fact that welding seams exist in the process that a pushing device arranged in the hydraulic ejector 201 is contacted with the side blocking block 10202 every time in the pushing process of the hydraulic ejector 201 is avoided, and finally the steel member 300 is pushed to a position which is inconsistent with the preset position, so that the precision is reduced is avoided.
S4, welding and hoisting a steel structure, namely assembling and welding a first steel member 300 in a first partition, hoisting the first steel member to a positioning point on a sliding rail 102, inserting a support 400 arranged at the bottom of the steel structure into the sliding rail 102, wherein the center line of the sliding rail 102 is superposed with the center line of the support 400, the humidity of the welding environment is more than 5 ℃, the environmental temperature is lower than 80 percent, and rust, oxygen skin, oil stain and water in a region to be welded and the range of 30-50 mm on two sides of the region to be welded are removed before welding;
s5, hydraulic pushing single sliding, connecting a hydraulic pushing system 200 with a steel member 300, sliding a first steel member 300 in a first partition in a planning and positioning direction by using the hydraulic pushing system 200 through a synchronous control system, wherein the hydraulic pushing system 200 comprises a hydraulic pusher 201 and a hydraulic pump source system 202, an output shaft of a hydraulic cylinder arranged at the front end of the hydraulic pusher 201 is rotatably connected with the steel member 300, the rear end of the hydraulic pusher 201 is connected with a sliding track 102 through a jacking device, and the jacking device is in contact with a side stop block 10202;
specifically, the electric synchronous control system comprises a power control system, a power driving system, a sensing detection system and a computer control system, adopts stroke and displacement sensing monitoring and computer control, can realize the observation of the hydraulic jacking process and related data and the issuance of control instructions through a man-machine interface of a hydraulic synchronous computer control system in a central control room by a plurality of functional operators such as synchronous action, load balance, posture correction, stress control, operation locking, process display, fault alarm and the like through data feedback and control instruction transmission, and can realize automatic control, single-stroke action, manual control and inching operation of a single jacking device through the operation of the man-machine interface of the computer, thereby achieving the synchronous slippage, the installation in-place adjustment, the installation of the steel structure in the integral slippage installation process, The hydraulic jacking device comprises a hydraulic jacking device 201, a central control room, a hydraulic synchronous computer control system, a hydraulic pump source system 202, a hydraulic synchronous computer control system and a hydraulic control system.
S6, steel members 300 are hinged into partitions, a first partition second steel member 300 is assembled and welded and then hoisted to a positioning point on a sliding track 102, a hydraulic jacking system 200 is connected with the second steel member 300, the hydraulic jacking system 200 is used, the first partition second steel member 300 is slid towards the next planned positioning direction through a synchronous control system, secondary beams are installed and temporarily supported and reinforced, the axial dimension of the members is corrected, and high-strength bolts connected with the primary and secondary beams are screwed, so that the first partition first steel member 300 and the second member form an integral frame beam;
s7, sliding the hydraulic pushing subareas, connecting the hydraulic pushing system 200 with the frame beam, pushing the reinforced frame beam to a designed position by using the hydraulic pushing system 200, and placing the steel beam at a pre-fixed position by using a hydraulic jack;
s8, the remaining partitioned steel members 300 are assembled, the steps S4-S7 are repeated, the remaining steel members 300 of other partitions are hoisted and slid to a specified position, the secondary beams among the partitions can be constructed in a tower crane hoisting installation mode, finally, the steel frame beams are directly hoisted in place, the secondary beams are installed by high-strength bolts, a sensing detection system is used for detecting whether the overall size has deviation, and if the deviation exists, the deviation is timely processed.
The construction method is applied to the slippage of a large-span steel structure, an embedded track 101 is arranged before a main body is poured, a slippage track 102 is arranged on the embedded track 101 before a steel member 300 is hoisted, a first steel member 300 of a first subarea is assembled and welded and then hoisted to a positioning point on the slippage track 102, a support 400 arranged at the bottom of the steel structure is inserted into the slippage track 102, a hydraulic jacking system 200 is connected with the steel member 300, the hydraulic jacking system 200 is used for sliding the first steel member 300 of the first subarea to a planning positioning direction through a synchronous control system, the second steel member 300 of the first subarea is assembled and welded and then hoisted to the positioning point on the slippage track 102, the hydraulic jacking system 200 is connected with the second steel member 300, the hydraulic jacking system 200 is used for sliding the second steel member 300 of the first subarea to the next planning positioning direction through the synchronous control system, installing secondary beams and temporary supporting and reinforcing, correcting the axial dimension of the members, screwing high-strength bolts connecting the primary beams and the secondary beams, forming a first steel member 300 and a second member of a first partition into an integral frame beam, connecting a hydraulic jacking system 200 with the frame beam, jacking the reinforced frame beam integrally to a designed position by using the hydraulic jacking system 200, placing the steel beam at a pre-fixed position by using a hydraulic jack, hoisting and sliding the steel members 300 of the rest other partitions to a specified position, wherein the secondary beams between the subareas can be constructed by adopting a tower crane hoisting installation mode, the steel frame beam is directly hoisted in place, the secondary beams are installed by utilizing high-strength bolts, a sensing detection system is used for detecting whether the overall dimension has deviation or not, if deviation exists, the method can be used for timely processing, various problems in the construction of the large-span steel structure are successfully solved, and the construction efficiency of the steel structure engineering is greatly improved.
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 (8)
1. The construction method for the large-span steel structure slippage is characterized by comprising the following steps:
s1, construction preparation, namely checking the weight of the steel member in construction, the configuration of the crane and the bearing capacity of an operation area, and positioning and paying off by using a measuring instrument in combination with a construction drawing;
s2, pre-embedding and installing the rails, and arranging the pre-embedded rails on the lower steel beam before pouring the concrete beam;
s3, installing the sliding rail, connecting and fixing the sliding rail and the pre-buried rail, and setting positioning points on the sliding rail according to the plan of a drawing;
wherein, in the step S3,
i, a sliding track is used for bearing, guiding and transversely limiting the horizontal displacement of a support below a rigid member, the central line of the sliding track is overlapped with the central line of the support by using a measuring instrument, the sliding track is fixedly welded with an embedded track arranged on a concrete beam, and the side baffle is made of Q235B section steel;
II, two sides of the channel steel are obliquely arranged, so that the support can be effectively prevented from being clamped due to the unevenness of the slide way in the sliding support process;
III, for guaranteeing the levelness of slide internal surface, reduce the hindrance of the in-process that slides, reduce the coefficient of sliding friction, the slide is when laying: the flatness of the splicing position of the sliding track is ensured, and the height difference is avoided; the lap joint position of the sliding rail and the concrete column is to ensure that the sliding bottom plate can smoothly pass through; the deviation between the center line of the sliding beam and the sliding center line is controlled within +/-3 mm; mounting standard of the slide side stop block: in order to ensure that a sufficient contact surface is formed between the slideway side baffle plate and the pushing support, the arrangement form of the slideway side baffle plate is strictly installed according to the design form of a drawing; the height of the welding line between the sliding way side stop block and the sliding track meets the design requirement so as to meet the use requirement of resisting the pushing counterforce; the initial mounting positions of the side stop blocks on all the sliding tracks are at the same axis position, and the initial point is reset at each axis position so as to reduce the accumulated mounting error and meet the requirement of the sliding synchronism; the installation error of the side stop blocks at two sides of the same sliding track is less than 1mm, and the distance error of the side stop blocks of the adjacent sliding tracks is less than 3 mm;
s4, welding and hoisting a steel structure, namely assembling and welding a first steel member of the first partition, hoisting the first steel member to a positioning point on the sliding track, and inserting a support arranged at the bottom of the steel structure into the sliding track;
s5, hydraulic pushing single steel member to slide, connecting the hydraulic pushing system with the steel member, and sliding the first steel member in the first partition to the planning positioning direction by using the hydraulic pushing system and a synchronous control system;
s6, steel members are hinged into partitions, a first partition second steel member is assembled and welded and then hoisted to a positioning point on a sliding track, a hydraulic pushing system is connected with the second steel member, the hydraulic pushing system is used, the first partition second steel member slides towards the next planned positioning direction through a synchronous control system, secondary beams and temporary support reinforcement are installed, the axial dimension of the members is corrected, and high-strength bolts connected with the primary and secondary beams are screwed, so that the first partition first steel member and the second member form an integral frame beam;
s7, sliding the hydraulic pushing subareas, connecting the hydraulic pushing system with the frame beam, pushing the reinforced frame beam to a designed position by using the hydraulic pushing system, and placing the steel beam at a pre-fixed position by using a hydraulic jack;
s8, residual partitioned steel members are assembled, the steps S4-S7 are repeated, the steel members of the residual other partitions are hoisted and slid to a specified position, secondary beams among the partitions can be constructed in a tower crane hoisting installation mode, finally, steel frame beams are directly hoisted in place, the secondary beams are installed well by high-strength bolts, a sensing detection system is used for detecting whether the overall size has deviation, and if the deviation exists, the deviation is timely processed.
2. The construction method applied to the large-span steel structure slippage according to claim 1, characterized in that: the sliding rail in the step S3 comprises a channel steel and a side stop block, the channel steel is arranged on one side of the top of the pre-buried rail, the side stop block is arranged on the other side of the top of the pre-buried rail, a sliding block is arranged inside the channel steel, and the sliding block is in contact with the support.
3. The construction method applied to the large-span steel structure slippage according to claim 2, characterized in that: the center line of the sliding track is superposed with the center line of the support.
4. The slippage construction method applied to the large-span steel structure according to claim 3, wherein the slippage construction method comprises the following steps: the sliding block is welded with the bottom of the channel steel, and the center line of the sliding block coincides with the center line of the channel steel.
5. The construction method applied to the large-span steel structure slippage according to claim 1, characterized in that: in the welding process, the humidity of the welding environment is more than 5 ℃, the temperature of the environment is lower than 80%, and rust, oxygen skin, oil stain and water in the area to be welded and the range of 30-50 mm on two sides need to be removed before welding.
6. The construction method applied to the large-span steel structure slippage according to claim 1, characterized in that: the hydraulic pushing system comprises a hydraulic pusher and a hydraulic pump source system, an output shaft of a hydraulic cylinder arranged at the front end of the hydraulic pusher is connected with the steel member in a rotating mode, the rear end of the hydraulic pusher is connected with a sliding track through a pushing device, and the pushing device is in contact with a side stop block.
7. The construction method for the large-span steel structure slippage according to claim 6, wherein the side stopper is connected with the top of the pre-buried rail by welding, and the side of the side stopper, which is in contact with the jacking device, is not welded with the top of the pre-buried rail, and the non-welded side is the movement direction of the hydraulic ejector for pushing the steel member.
8. The construction method applied to the large-span steel structure slippage according to claim 7, characterized in that: the number of the side stop blocks is at least more than one, and the distance between the adjacent side stop blocks is consistent.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113895888A (en) * | 2021-10-28 | 2022-01-07 | 中国十九冶集团有限公司 | Integral horizontal pushing structure and method for blast furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113895888A (en) * | 2021-10-28 | 2022-01-07 | 中国十九冶集团有限公司 | Integral horizontal pushing structure and method for blast furnace |
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| CN114439247B (en) * | 2022-03-10 | 2023-11-17 | 安徽伟宏钢结构集团股份有限公司 | Large-span large-breadth suspended ceiling mobile construction method |
| CN114737808A (en) * | 2022-03-24 | 2022-07-12 | 山东电力工程咨询院有限公司 | Construction method of super-large-span dry coal shed grid structure |
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Application publication date: 20210831 |