CN111827676A - Steel column internal flow stopping device for jacking concrete filled steel tube and using method thereof - Google Patents
Steel column internal flow stopping device for jacking concrete filled steel tube and using method thereof Download PDFInfo
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- CN111827676A CN111827676A CN202010602420.2A CN202010602420A CN111827676A CN 111827676 A CN111827676 A CN 111827676A CN 202010602420 A CN202010602420 A CN 202010602420A CN 111827676 A CN111827676 A CN 111827676A
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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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- Structural Engineering (AREA)
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a steel column internal flow stopping device for jacking concrete filled steel tubes and a using method thereof. The device is simple, convenient to operate and low in cost, the adjusting nut is tightened after the bolt rod and the adjusting nut are jacked, and the bolt rod and the adjusting nut can be detached when the long round hole is subjected to repair welding and can be repeatedly used at other parts of a project.
Description
Technical Field
The invention relates to the technical field of concrete-filled steel tube jacking construction, in particular to a steel column internal flow stopping device for concrete-filled steel tubes jacking and a using method thereof.
Background
The concrete-filled steel tube refers to a structural member which is formed by filling concrete in a steel tube and can bear the action of external load together with the core concrete of the steel tube, and can be divided into round concrete-filled steel tube, square concrete-filled steel tube, rectangular concrete-filled steel tube, polygonal concrete-filled steel tube and the like according to different cross-sectional forms. With the continuous acceleration of the urbanization process and the continuous promotion of the international status in China in recent years, various international large conferences and business communication activities log in China at a time, ultra-large buildings in various regions in China are produced at the same time, and international conference centers, international exhibition centers, international sports centers and the like which accord with local strategic planning are built in various regions, so that the urban quality is greatly promoted comprehensively.
At present, the main bodies of various ultra-large international conference centers, international exhibition centers, international sports centers and the like mostly adopt steel pipe concrete structures, and the compression strength of concrete is known to be high. But the bending resistance is very weak, while the steel, especially the section steel, has strong bending resistance and good elastic plasticity, but is easy to be unstable when being pressed and loses the axial compression resistance. The steel pipe concrete can combine the advantages of the two structurally, so that the concrete is in a lateral compression state, the compression strength of the concrete can be improved by times, meanwhile, the rigidity of the steel pipe is improved due to the existence of the concrete, and the two play a role together, so that the bearing capacity is greatly improved. As a new combined structure, the steel tube concrete is mainly based on a compression member with small axial compression and small eccentric acting force, and is widely used in frame structures (such as factories and high-rise buildings). The rapid development of the steel pipe concrete structure is due to the fact that the steel pipe concrete structure has good stress performance and construction performance, and is characterized by comprising the following aspects: the bearing capacity is high, the ductility is good, and the seismic performance is excellent; construction is convenient, so that the construction period is greatly shortened; the fire resistance and the fire prevention of the steel pipe are facilitated; the corrosion resistance is superior to that of a steel structure.
In the jacking construction of steel pipe concrete, for preventing the concrete backward flow, all can set up between steel column slip casting hole and ground pump conveying pipe and end the class device under the general condition. The construction method is carried out outside the steel column, and further, the flow stopping device, the front short connecting pipe and the like cannot be dismantled, the concrete needs to be dismantled and reused after initial setting, and the method is time-consuming, labor-consuming, low in efficiency and complex and tedious. The problem that traditional technology brought can effectively be solved to this patent, can reduce machinery and cost of labor by a wide margin, can powerfully improve the efficiency of construction. The device is a construction tool which is simple to manufacture, low in cost, safe and efficient.
In the steel pipe concrete jacking construction process, in the traditional construction process at present, a check valve is arranged between a steel column grouting hole and a ground pump conveying pipe, firstly, a gate plate type is adopted, the principle is similar to that of a gate valve, the main problem is that a short pipe needs to be welded between the gate valve and the steel column grouting hole, after the jacking is finished, a pump truck is evacuated, after the concrete is initially set, the short pipe is cut, meanwhile, the cut opening is polished, then, a grout sealing hole is welded, the available aging of the gate valve is not high, the mechanical idle time is long, the welding, cutting, polishing and repair welding processes are complicated, and the labor cost is extremely high; and secondly, a wedge inserting type is adopted, a strip-shaped opening is cut on the conveying steel pipe, a steel plate wedge with the thickness equivalent to that of the strip-shaped opening is manufactured, and the steel plate wedge is hammered into the strip-shaped opening manually after jacking is finished and is sealed. And thirdly, adopting a hoop type, namely rolling a steel pipe with the outer diameter larger than that of the steel column by using a steel plate and arranging a tee joint, wherein the hoop is fastened by using bolts, a flashboard type or inserted wedge type flow stopping device is arranged on the tee joint, when the steel column is rectangular, fastening is carried out by using channel steel, angle steel and the like, and the flow stopping device is the same as a round pipe. This kind of construction process has reduced processes such as slip casting hole department welded connection nozzle stub and cutting, polish, but the staple bolt that the preparation can have enough to meet the need the utilization, and material cost and personnel cost are all great, and during the use, because staple bolt weight is too big, need machinery cooperation installation, exist simultaneously and have the gap between staple bolt tee bend department and the slip casting hole, if sealed not well, will continuously leak thick liquid, and it is time-consuming to take materials, inefficiency, and is with high costs.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the steel column internal flow stopping device for steel tube concrete jacking and the using method thereof are provided, and the problems of low working efficiency, large mechanical investment and high danger coefficient existing in a flashboard type, a wedge type and a hoop type in the traditional construction process are solved.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a flow stopping device in a steel column for jacking concrete in a steel tube comprises a flow stopping plate attached to the inner wall of the steel column, wherein a lubricating sealing layer is arranged on the flow stopping plate and the inner wall of the steel column, a flow stopping plate through hole with the aperture equal to that of a grouting hole in the steel column is formed in the flow stopping plate, two positioning nuts are fixed on one side, close to the lubricating sealing layer, of the flow stopping plate and are respectively positioned on two sides of the flow stopping plate through hole, the positioning nuts are clamped in a long circular hole formed in the steel column, the positioning nuts and the long circular hole are matched to limit the sliding track of the flow stopping plate and enable the flow stopping plate to have two states of a grouting hole opening state and a grouting hole plugging state, the positioning nuts enable the flow stopping plate to be switched from the grouting hole opening state to the grouting hole plugging state in the process from the top to the bottom of the long circular hole, a bolt rod with the length larger than the wall, and the adjusting nut is also arranged on the bolt rod positioned outside the steel column, the outer diameter of the adjusting nut is larger than the width of the long round hole, and the flow stopping plate is fixed on the inner wall of the steel column by matching the adjusting nut with the bolt rod so as to limit the free sliding of the flow stopping plate.
Defining the length of the flow stopping plate as LFlow stopping plateThe width of the flow stopping plate is DFlow stopping plateGrouting arranged on steel columnPore diameter of phiGroutingThe length of the long round hole is LLong holeThe width of the long round hole is DLong holeThe outer diameter of the positioning nut is phiPositioningThen D isFlow stopping plateIs not less than phiGrouting，LFlow stopping plateNot less than 2 phiGrouting+2LLong holeIs LFlow stopping plateThe minimum length of a section of sealed grouting hole is equal to the aperture of one grouting hole plus the length of two long round holes, LLong holeIs not less than phiGrouting，DLong holeIs not less than phiPositioning。
The centers of the two positioning nuts and the center of the through hole of the flow stopping plate are positioned on the same straight line.
The edge of the through hole of the flow stopping plate is chamfered, and the edge of the through hole of the flow stopping plate is polished into a blade shape so as to reduce resistance when the flow stopping plate slides downwards.
The lubricating sealing layer is composed of butter.
The use method of the steel column internal flow stopping device for jacking the concrete filled steel tube comprises the following steps:
coating butter on one side of the inner wall of a steel column to form a lubricating sealing layer, attaching a flow stopping plate on the lubricating sealing layer, clamping a positioning nut in a long circular hole in the steel column and locating at the top end of the long circular hole, enabling the center line of a through hole of the flow stopping plate to coincide with the center line of a grouting hole, penetrating a bolt rod from the outer wall of the steel column through the long circular hole, screwing the bolt rod into the positioning nut, mounting an adjusting nut on the bolt rod, and screwing the adjusting nut to fix the flow stopping plate on the lubricating sealing layer on the inner wall of the steel column;
step two, mounting a steel column, performing jacking operation after the steel column is mounted, adjusting an adjusting nut to release the locking force between the adjusting nut and the outer wall of the steel column after the jacking operation is finished, enabling a flow stopping plate to be in a free sliding state, applying acting force to a bolt rod positioned on the outer side of the steel column to enable the flow stopping plate to slide to the bottom of the long circular hole, and enabling a through hole of the flow stopping plate to be far away from the grouting hole and blocking the grouting hole;
and step three, adjusting the adjusting nut to enable the adjusting nut to be attached to the outer wall of the steel column, applying locking force to fix the flow stopping plate on the lubricating sealing layer, welding and sealing the long round hole from the top end to the lower end of the long round hole, removing the adjusting nut and the bolt rod when the length is not less than 1/3 of the long round hole in a welding and sealing mode, filling the slurry sealing plate in the long round hole, and welding until the long round hole is completely sealed.
The invention has the beneficial effects that:
1. the device is simple, the operation is convenient, and the cost is lower.
2. The flow stopping device is manufactured in a factory assembly line, so that the construction cost of installing the flow stopping device on site is saved.
3. The condition that traditional flow stopping devices are installed outside a steel column is changed in the aspect of concept, and the problems of low working efficiency, high mechanical investment and high risk coefficient existing in a flashboard type, a wedge type and a hoop type are effectively solved.
4. The flow stopping device is arranged in the steel column, so that the innovation of the whole jacking process can be effectively inspired.
5. After the pair of bolt rods and the adjusting nuts are jacked, the adjusting nuts are tightened, and the bolt rods and the adjusting nuts can be detached when the oblong holes are subjected to repair welding and can be repeatedly used at other parts of the engineering.
Drawings
Fig. 1 is a schematic structural view of the present invention in a use state.
FIG. 2 is a sectional view taken along the line A-A in FIG. 1 according to the present invention.
FIG. 3 is a schematic structural view of the flow stopping plate of the present invention.
Graphic notation: 1. the structure comprises a flow stopping plate, 2, a long circular hole, 3, a positioning nut, 4, a flow stopping plate through hole, 5, a steel column, 501, a grouting hole, 6, a lubricating sealing layer, 7, an adjusting nut, 8 and a bolt rod.
Detailed Description
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A steel column inner flow stopping device for jacking concrete filled steel tubes comprises a flow stopping plate 1 attached to the inner wall of a steel column, wherein the length and the width of the flow stopping plate 1 are determined according to the aperture of a grouting hole, and the length of the flow stopping plate is defined as LFlow stopping plateThe width of the flow stopping plate is DFlow stopping plateThe diameter of the grouting hole arranged on the steel column is phiGroutingThe length of the long round hole is LLong holeThe width of the long round hole is DLong holeThe outer diameter of the positioning nut is phiPositioningWidth D of the choke plateFlow stopping plate＝φGrouting+40mm, i.e. two centimeters are reserved on each side of the through hole of the flow stopping plate, and the length L of the flow stopping plateFlow stopping plate＝2φGrouting+2LLong holeThe +80mm is the aperture of a grouting hole, the length of a section of sealed grouting hole is the minimum aperture of the grouting hole and the length of two long round holes, 20mm is reserved at two ends of the two long round holes respectively, a lubricating sealing layer is formed on the flow stopping plate and the inner wall of the steel column by coating butter, a flow stopping plate through hole with the aperture equal to the aperture of the grouting hole in the steel column is formed in the flow stopping plate, two positioning nuts 3 are fixed on one side of the flow stopping plate close to the lubricating sealing layer, the two positioning nuts 3 can be respectively positioned on two sides of the flow stopping plate through hole by adopting M16-M18 nuts, the position of the positioning nut 3 can be determined by attaching the flow stopping plate 1 and the steel column steel plate, and the positioning nuts are welded. The positioning nut is clamped in a long round hole 2 formed on the steel column, DLong hole＝φPositioning+4mm，LLong hole＝φGroutingThe positioning nut and the long round hole 2 are matched to limit the sliding track of the stop flow plate and enable the stop flow plate to have two states of opening a grouting hole and plugging the grouting hole, the positioning nut 3 enables the stop flow plate to be switched to the state of plugging the grouting hole from the state of opening the grouting hole in the process of sliding from the top to the bottom of the long round hole 2, a bolt rod 8 with the length larger than the wall thickness of a steel column is screwed in the positioning nut 3, the bolt rod 8 extends to the outer side of the steel column through the long round hole 2, an adjusting nut 7 is further mounted on the bolt rod 8 positioned on the outer side of the steel column 5, the inner diameter of the adjusting nut 7 is the same as that of the bolt rod 8, the outer diameter of the adjusting nut 7 is larger than that of a common nut, the outer diameterThe flow plate 1 is fixed on the inner wall of the steel column 5 to limit the free sliding of the flow stopping plate 1, if the steel column adopts a rectangular steel column, the flow stopping plate adopts a plane structure, and if the steel column adopts a cylindrical steel column, the flow stopping plate adopts an arc-shaped surface structure.
The centers of the two positioning nuts 3 and the center of the flow stopping plate through hole 4 are positioned on the same straight line.
The edges of the through holes 4 of the flow stopping plate are chamfered, and the edges of the through holes of the flow stopping plate are polished into a blade shape so as to reduce the resistance of cutting off the self-compacting concrete when sliding downwards.
The use method of the steel column internal flow stopping device for jacking the concrete filled steel tube comprises the following steps:
firstly, coating butter on one side of the inner wall of a steel column to form a lubricating sealing layer 6 so as to reduce resistance and sealing during downward sliding and prevent slurry leakage, attaching a flow stopping plate 1 on the lubricating sealing layer 6, clamping a positioning nut 3 in a long circular hole 2 on the steel column 5 and locating at the top end of the long circular hole 2, overlapping the center line of a through hole of the flow stopping plate 1 with the center line of a grouting hole 501, threading a bolt rod 8 into the positioning nut 3 through the long circular hole from the outer wall of the steel column, mounting an adjusting nut 7 on the bolt rod 8, and screwing the adjusting nut 7 to fix the flow stopping plate on the lubricating sealing layer on the inner wall of the steel column;
step two, installing a steel column, performing jacking operation after the steel column is installed, adjusting an adjusting nut 7 to release the locking force between the adjusting nut and the outer wall of the steel column after the jacking operation is finished, enabling a flow stopping plate 1 to be in a free sliding state, applying acting force to a bolt rod positioned on the outer side of the steel column to enable the flow stopping plate to slide to the bottom of a long circular hole 2, and enabling a through hole of the flow stopping plate to be far away from a grouting hole and blocking the grouting hole;
and step three, adjusting the adjusting nut 7 to be attached to the outer wall of the steel column, applying locking force to fix the flow stopping plate on the lubricating sealing layer 6, welding and plugging the long circular hole from the top end to the lower end of the long circular hole 2, removing the adjusting nut 7 and the bolt rod 8 when the length is not less than the length of the 1/3 long circular hole 2 through welding and sealing, and filling the slurry sealing plate in the long circular hole and welding until the long circular hole 2 is completely plugged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a flow stopping device in steel column for jacking of steel pipe concrete which characterized in that: the anti-slip device comprises a flow stopping plate attached to the inner wall of a steel column, wherein a lubricating sealing layer is arranged on the flow stopping plate and the inner wall of the steel column, a flow stopping plate through hole with the aperture equal to that of a grouting hole in the steel column is formed in the flow stopping plate, two positioning nuts are fixed on one side, close to the lubricating sealing layer, of the flow stopping plate and are respectively positioned on two sides of the flow stopping plate through hole, the positioning nuts are clamped in a long circular hole formed in the steel column, the positioning nuts and the long circular hole are matched to limit the sliding track of the flow stopping plate and enable the flow stopping plate to have two states of a grouting hole opening state and a grouting hole plugging state, the positioning nuts enable the flow stopping plate to be switched from the grouting hole opening state to the grouting hole plugging state in the process of sliding from the top to the bottom of the long circular hole, bolt rods with the lengths larger than the wall thickness of the steel column are screwed, the outer diameter of the adjusting nut is larger than the width of the long round hole, and the flow stopping plate is fixed on the inner wall of the steel column through the adjusting nut and the bolt rod so as to limit free sliding of the flow stopping plate.
2. The steel column internal flow stopping device for concrete filled steel tubes lifting according to claim 1, wherein: defining the length of the flow stopping plate as LFlow stopping plateThe width of the flow stopping plate is DFlow stopping plateThe diameter of the grouting hole arranged on the steel column is phiGroutingThe length of the long round hole is LLong holeThe width of the long round hole is DLong holeThe outer diameter of the positioning nut is phiPositioningThen D isFlow stopping plateIs not less than phiGrouting，LFlow stopping plateNot less than 2 phiGrouting+2LLong hole，LLong holeIs not less than phiGrouting，DLong holeIs not less than phiPositioning。
3. The steel column internal flow stopping device for concrete filled steel tubes lifting according to claim 1, wherein: the centers of the two positioning nuts and the center of the through hole of the flow stopping plate are positioned on the same straight line.
4. The steel column internal flow stopping device for concrete filled steel tubes lifting according to claim 1, wherein: and chamfering the edge of the through hole of the flow stopping plate.
5. The steel column internal flow stopping device for concrete filled steel tubes lifting according to claim 1, wherein: the lubricating sealing layer is composed of butter.
6. The use method of the steel column internal flow stopping device for concrete filled steel tubes lifting in any one of claims 1 to 5 is characterized in that: the method comprises the following steps:
coating butter on one side of the inner wall of a steel column to form a lubricating sealing layer, attaching a flow stopping plate on the lubricating sealing layer, clamping a positioning nut in a long circular hole in the steel column and locating at the top end of the long circular hole, enabling the center line of a through hole of the flow stopping plate to coincide with the center line of a grouting hole, penetrating a bolt rod from the outer wall of the steel column through the long circular hole, screwing the bolt rod into the positioning nut, mounting an adjusting nut on the bolt rod, and screwing the adjusting nut to fix the flow stopping plate on the lubricating sealing layer on the inner wall of the steel column;
step two, mounting a steel column, performing jacking operation after the steel column is mounted, adjusting an adjusting nut to release the locking force between the adjusting nut and the outer wall of the steel column after the jacking operation is finished, enabling a flow stopping plate to be in a free sliding state, applying acting force to a bolt rod positioned on the outer side of the steel column to enable the flow stopping plate to slide to the bottom of the long circular hole, and enabling a through hole of the flow stopping plate to be far away from the grouting hole and blocking the grouting hole;
and step three, adjusting the adjusting nut to enable the adjusting nut to be attached to the outer wall of the steel column, applying locking force to fix the flow stopping plate on the lubricating sealing layer, welding and sealing the long round hole from the top end to the lower end of the long round hole, removing the adjusting nut and the bolt rod when the length is not less than 1/3 of the long round hole in a welding and sealing mode, filling the slurry sealing plate in the long round hole, and welding until the long round hole is completely sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010602420.2A CN111827676A (en) | 2020-06-29 | 2020-06-29 | Steel column internal flow stopping device for jacking concrete filled steel tube and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010602420.2A CN111827676A (en) | 2020-06-29 | 2020-06-29 | Steel column internal flow stopping device for jacking concrete filled steel tube and using method thereof |
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| CN111827676A true CN111827676A (en) | 2020-10-27 |
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| CN202010602420.2A Pending CN111827676A (en) | 2020-06-29 | 2020-06-29 | Steel column internal flow stopping device for jacking concrete filled steel tube and using method thereof |
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| CN109750832A (en) * | 2019-01-24 | 2019-05-14 | 中建八局第三建设有限公司 | A kind of construction method of constructional column concrete self-compaction |
| CN208950064U (en) * | 2018-08-03 | 2019-06-07 | 鞍钢钢结构有限公司 | A kind of concrete filled steel tube jacking apparatus |
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2020
- 2020-06-29 CN CN202010602420.2A patent/CN111827676A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2443728A (en) * | 2006-11-09 | 2008-05-14 | Jen-Hsin Lee | Moldboard positioning assembly and use there of |
| CN201268850Y (en) * | 2008-09-03 | 2009-07-08 | 中冶成工建设有限公司工程技术分公司 | Concrete non-return apparatus for steel column reverse pouring concrete casting construction |
| CN103266773A (en) * | 2013-05-17 | 2013-08-28 | 中国十七冶集团有限公司 | Novel concrete pouring device for constructional columns |
| CN203959105U (en) * | 2014-07-21 | 2014-11-26 | 山东国鸿石化有限公司 | The cover slot that falls portion control apparatus |
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Application publication date: 20201027 |
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