CN211714603U - Multi-cavity steel pipe concrete one-step jacking internal pouring interface structure - Google Patents
Multi-cavity steel pipe concrete one-step jacking internal pouring interface structure Download PDFInfo
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- CN211714603U CN211714603U CN202020072845.2U CN202020072845U CN211714603U CN 211714603 U CN211714603 U CN 211714603U CN 202020072845 U CN202020072845 U CN 202020072845U CN 211714603 U CN211714603 U CN 211714603U
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Abstract
The utility model provides a joint structure is pour in jacking of multicavity steel pipe-concrete, including the prefabricated switching device of multicavity steel pipe fixed connection on the multicavity steel pipe, the multicavity steel pipe includes overcoat steel pipe and interior baffle, prefabricated switching device includes the interface board, the welded plate, switching pipe and branching cluster pipe, branching cluster pipe includes three pipes of same elevation position, the rear end of switching pipe passes the switching pipe hole and is located the lumen, the preceding side surface of long sideboard is hugged closely to the rear side surface of welded plate and rather than fixed connection, well pipe is located the lumen, the tail end of side pipe is located the side intracavity, interface board and external pump line fixed connection. The utility model discloses a jacking interface of customization keeps the synchronous jacking of concrete in the multicavity steel pipe, and easy operation saves artifically, adds man-hour at the reinforcing bar post and customs the jacking device, pours jointly through jacking multicavity concrete, does not influence the installation of top steel column, very big saving time limit for a project.
Description
Technical Field
The utility model relates to a construction auxiliary structure, especially a joint structure is pour in jacking of multicavity steel pipe-concrete.
Background
The multi-cavity steel pipe concrete column is a composite structure frequently used in super high-rise buildings and is used as a bearing structure of the super high-rise structure. In actual construction, two construction modes of high-cast concrete construction and pump concrete jacking construction are mainly used as common concrete filled steel tubular columns.
The concrete jacking construction is to slowly jack the concrete from the root of the steel column to the top, and the concrete inside the steel pipe concrete is compact and tightly cemented with the concrete steel plate under the action of the jacking pressure, so that the phenomena of segregation and the like cannot occur.
Because building structure's development, the steel pipe concrete structure is becoming complicated day by day, and the appearance of multicavity concrete makes the concrete jacking degree of difficulty promote by a wide margin, can appear the different problem of different cavity concrete liquid level height when the concrete once jacks up, if the jacking complexity that can increase the jacking structure many times, the operation of being not convenient for.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a joint structure is pour in jacking of multicavity steel core concrete once, it is great to solve the jacking degree of difficulty of multicavity steel core concrete column once, and different cavity concrete liquid level are different, and the jacking is many times can increase the complexity of jacking structure, the technical problem of the operation of not being convenient for.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a multi-cavity steel pipe concrete once-jacking inner pouring interface structure comprises a prefabricated switching device, wherein a multi-cavity steel pipe is fixedly connected onto the multi-cavity steel pipe, the multi-cavity steel pipe is a three-cavity steel pipe and comprises an outer sleeve steel pipe and two inner partition plates fixedly connected into the outer sleeve steel pipe, the outer sleeve steel pipe is a rectangular steel pipe and comprises long side plates on the front side and a long side plate on the rear side and short side plates on the left side and the right side, the inner partition plates divide the interior of the outer sleeve steel pipe into three cavities, namely a side cavity and a middle cavity, the inner partition plates are rectangular plates with the same height and the same width as the rectangular steel pipe, two ends of each rectangular plate are,
the prefabricated adapter device comprises an interface board, a welding board, an adapter tube and a forked serial tube, wherein the adapter tube is horizontally arranged, the interface board and the welding board are vertically arranged, an interface board hole with the size matched with that of the adapter tube is formed in the center of the interface board, a welding board hole with the size matched with that of the adapter tube is also formed in the center of the welding board, the adapter tube penetrates through the interface board hole, the outer wall of the front end head of the adapter tube is fixedly connected with the interface board hole, the adapter tube penetrates through the welding board hole, and the outer wall of the middle part of the adapter tube is fixedly connected with the welding board,
the branched serial pipes are horizontally arranged and comprise three pipes at the same elevation position, namely a middle pipe and two side pipes, the middle pipe is fixedly communicated with the rear end of the switching pipe, the two side pipes are fixedly communicated with the two sides of the rear end part of the switching pipe,
the front side surface of the bottom of the middle cavity of the long side plate is provided with a switching tube hole for a switching tube to pass through, the position of the inner baffle corresponding to the side tube is provided with a side tube hole for the side tube to pass through, the rear end of the switching tube passes through the switching tube hole and is also positioned in the middle cavity, the rear side surface of the welding plate is clung to the front side surface of the long side plate and is fixedly connected with the front side surface of the long side plate, the middle tube is positioned in the middle cavity, the side tubes on the two sides respectively pass through the side tube hole, and the tail end part of the,
the interface board is fixedly connected with the external pump pipe.
The middle pipe is a linear pipe.
The side pipe comprises a straight section and a bent section, the bent section is located in the side cavity, the bent section is arc-shaped and is bent towards the inner side, and the direction of the pipe orifice of the side pipe is consistent with the direction of the pipe orifice of the middle pipe.
The diameter ratio of the diameter of the bifurcated pipe to the diameter of the external pump pipe is 0.6, and the diameter ratio of the diameter of the bifurcated pipe to the diameter of the adapter pipe is 0.72.
The length of the straight section is greater than that of the middle pipe.
The pipe orifice of the middle pipe is positioned at the back relative to the pipe orifice of the side pipe, and the pipe orifice positions of the two side pipes are positioned on the same straight line.
The prefabricated switching device further comprises a diversion string pipe, the diversion string pipe is an L-shaped diversion pipe, the horizontal section is fixedly connected to the tail end of the bifurcation string pipe, the vertical section is vertically upward, the pipe diameter of the diversion string pipe is the same as that of the bifurcation string pipe, and the turning radius of the diversion string pipe is based on the fact that the vertical section of the diversion string pipe is not in contact with the inner wall of the multi-cavity steel pipe.
And the inner partition plate is provided with a concrete grout passing hole which is positioned at the lower side of the side pipe hole.
The outer sleeve steel pipe is provided with concrete observation holes, each concrete observation hole is provided with a group on each cavity, the concrete observation holes in each group are arranged at intervals of 1m, and the diameter of each concrete observation hole is 2 cm.
The prefabricated adapter device also comprises a check valve plate, the front side surface of the interface plate is fixedly connected with a limiting piece of the check valve plate, the check valve plate is vertically arranged between the limiting pieces, the limiting pieces are four limiting rods fixedly connected to the four corners of the check valve plate, the distance between the upper limiting rod and the lower limiting rod is matched with the width of the check valve plate, the length of the check valve plate is greater than that of the interface plate,
one end of the check valve plate is provided with a pump pipe switch hole, and the check valve plate can move between the limiting parts along the left and right directions and is used for controlling the opening and the closing between the pump pipe switch hole and the interface plate hole.
Compared with the prior art the utility model has the following characteristics and beneficial effect:
the utility model discloses a jacking interface of customization keeps the synchronous jacking of concrete in the multicavity steel pipe, and easy operation saves artifically, adds man-hour at the reinforcing bar post and customs the jacking device, pours jointly through jacking multicavity concrete, does not influence the installation of top steel column, very big saving time limit for a project.
The utility model discloses owing to need not to operate in the pipe-concrete steel column, the operation is safe.
The utility model discloses a synchronous jacking of each cavity concrete in the steel pipe is guaranteed in reasonable branching pipe length and the setting of pipe diameter, stops that there is the difference in height concrete jacking face, and the air under the steel column air especially diaphragm is got rid of in the jacking construction, has avoided the beneath concrete of baffle not closely knit, has guaranteed concrete placement quality.
The utility model discloses can dismantle the connection on the overcoat steel pipe, can retrieve partial component after the use.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the prefabricated switching device of the present invention.
FIG. 2 is a schematic view of the check valve plate construction.
Fig. 3 is a schematic diagram of the structure of the interface board.
Fig. 4 is a schematic view of the structure of the welded plate.
Fig. 5 is a schematic structural diagram of a welded plate of the adapter tube and the furcation tandem tube.
Fig. 6 is a schematic structural diagram of an interface configuration.
Fig. 7 is a schematic top view of the structure of fig. 6.
Fig. 8 is a schematic structural view of the middle separator.
Fig. 9 is a schematic view of the structure of the interface plate holes.
Fig. 10 is a schematic structural view of a flow guide string pipe.
Reference numerals: 1-inner partition plate, 2-long side plate, 3-short side plate, 4-side cavity, 5-middle cavity, 6-interface plate, 7-welding plate, 8-adapter tube, 9-interface plate hole, 10-welding plate hole, 11-middle tube, 12-side tube, 121-straight section, 122-bending section, 13-adapter tube hole, 14-side tube hole, 15-concrete grout passing hole, 16-concrete observation hole, 17-check valve plate, 18-limiting piece, 19-pump tube switch hole and 20-guide series tube.
Detailed Description
Referring to fig. 1-9, the multi-cavity steel pipe concrete once-jacking inner pouring joint structure is shown in fig. 6 and comprises a prefabricated switching device fixedly connected with a multi-cavity steel pipe on the multi-cavity steel pipe, wherein the multi-cavity steel pipe is a three-cavity steel pipe and comprises an outer sleeve steel pipe and two inner partition plates 1 fixedly connected with the inner sleeve steel pipe, the outer sleeve steel pipe is a rectangular steel pipe and comprises long side plates 2 on the front side and the rear side and short side plates 3 on the left side and the right side, the inner partition plates 1 divide the interior of the outer sleeve steel pipe into three cavities, namely side cavities 4 and a middle cavity 5, the inner partition plates 1 are rectangular plates with the same height and the same width as the rectangular steel pipe, and two ends of each rectangular plate are vertically and fixedly connected.
Referring to fig. 1-5, the prefabricated adapter device includes an interface board 6, a welding plate 7, an adapter tube 8 and a bifurcated serial pipe, the adapter tube 8 is horizontally disposed, the interface board 6 and the welding plate 7 are vertically disposed, an interface plate hole 9 having a size corresponding to that of the adapter tube 8 is formed in the center of the interface board 6, a welding plate hole 10 having a size corresponding to that of the adapter tube 8 is also formed in the center of the welding plate 7, the adapter tube 8 penetrates through the interface plate hole 9, the outer wall of the front end of the adapter tube 8 is fixedly connected to the interface plate hole 9, and the adapter tube 8 penetrates through the welding plate hole 10 and the outer wall of the middle portion of the adapter tube 8 is fixedly connected to the welding plate 7.
The fork cluster pipe level sets up, and the fork cluster pipe includes three pipes of same elevation position, is well pipe 11 and two side pipes 12 respectively, well pipe 11's diameter is less than the switching pipe and fixed intercommunication in the rear end of switching pipe 8, and two side pipes 12 are fixed to be communicated in the both sides of switching pipe 8 rear end portion.
Referring to fig. 6 to 9, an adapter tube hole 13 through which the adapter tube 8 passes is formed in the front side surface of the bottom of the cavity of the long-side plate 2, a side tube hole 14 through which the side tube 12 passes is formed in the position, corresponding to the side tube 12, of the inner partition plate 1, the rear end of the adapter tube 8 passes through the adapter tube hole 13 and is also located in the cavity 5, and the rear side surface of the welding plate 7 is tightly attached to the front side surface of the long-side plate 2 and is fixedly connected with the same, and the fixed connection is welding connection. The middle pipe 11 is positioned in the middle cavity 5, the side pipes 12 on two sides respectively pass through the side pipe holes 14, the tail end parts of the side pipes 12 are positioned in the side cavity 4, and the interface board 6 is fixedly connected with an external pump pipe. The interface board is connected with the external pump pipe by bolts.
Referring to fig. 5, the middle pipe 11 is a linear pipe. The side pipe 12 comprises a straight section 121 and a bent section 122, the bent section 122 is positioned in the side cavity 4, the bent section 122 is in an arc shape and is bent towards the inner side, and the direction of the nozzle of the side pipe 12 is consistent with the direction of the nozzle of the middle pipe 11.
In order to ensure that the cavity concrete surface is synchronously jacked when the concrete-filled steel tube column is jacked, the requirement that the volume ratio of three branched series pipes Q1, Q2 and Q3 to the cavity of the concrete-filled steel tube column is consistent is met. The areas of Q1, Q2 and Q3 are determined by experience and the volume ratio of the concrete filled steel tubular column cavity during actual construction. According to the concrete flow characteristics and a fluid mechanics related equation, the diameter ratio of the diameter of the bifurcation pipe to the diameter of the external pump pipe is calculated to be 0.6, and the diameter ratio of the diameter of the bifurcation pipe to the diameter of the adapter pipe 8 is calculated to be 0.72.
The length of the straight section 121 is greater than the length of the middle tube 11. The position of the orifice of the middle pipe 11 is back to the position of the orifice of the side pipe 12, and the positions of the orifices of the two side pipes 12 are on the same straight line.
Referring to fig. 6-9, the inner partition plate 1 is provided with concrete grout holes 15, and the concrete grout holes 15 are located at the lower sides of the side pipe holes 14. The outer sleeve steel pipe is provided with concrete observation holes 16, each concrete observation hole is provided with a group on each cavity, the concrete observation holes in each group are arranged at intervals of 1m, and the diameter of each concrete observation hole is 2 cm. The steel pipe column needs to be provided with an observation hole and a concrete grout passing hole. The design of the holes of the partition plate in the steel pipe, particularly complex nodes, is carried out, so that the force transmission performance of the partition plate can be ensured not to be influenced, and the concrete pressure is kept basically consistent in the pouring process. The concrete observation hole is in order to conveniently observe each cavity concrete jacking condition of pouring.
Referring to fig. 10, the prefabricated switching device further includes a diversion string pipe 20, the diversion string pipe 20 is an L-shaped diversion pipe, a horizontal section is fixedly connected to a tail end of the branch string pipe, a vertical section is vertically upward, a pipe diameter of the diversion string pipe 20 is the same as that of the branch string pipe, and a turning radius of the diversion string pipe 20 is based on that the vertical section of the diversion string pipe does not contact with an inner wall of the multi-cavity steel pipe. The guide series pipe is mainly used for guiding the jacking according to the concrete vertical jacking channel.
Referring to fig. 1-2, the prefabricated adapter device further includes a check valve plate 17, a limiting member 18 of the check valve plate is fixedly connected to a front side surface of the interface board 6, and the limiting member 18 mainly functions to limit a position of the check valve plate, so that the check valve can control concrete to be lifted and closed conveniently. The check valve plate 17 is clamped between the limiting pieces 18 from top to bottom, the limiting pieces 18 are four limiting rods fixedly connected to four corners of the check valve plate, the distance between the upper limiting rod and the lower limiting rod is matched with the width of the check valve plate 17, and the length of the check valve plate 17 is greater than that of the interface plate 6. One end of the check valve plate 17 is provided with a pump pipe switch hole 19, and the check valve plate 17 can move between the limiting pieces 18 along the left-right direction and is used for controlling the opening and closing between the pump pipe switch hole 19 and the interface plate hole 9.
The construction method of the multi-cavity steel pipe concrete one-step jacking inner pouring interface structure comprises the following construction steps:
designing the size of a multi-cavity steel pipe, designing the sizes of a switching pipe 8 and a branch string pipe according to the cavity design volume of the multi-cavity steel pipe, the flow rate and the flow of an external pump pipe, and then prefabricating the multi-cavity steel pipe and a switching device;
step two, fixedly connecting the switching device to the bottom of the multi-cavity steel pipe, wherein each branch string pipe corresponds to one cavity;
step three, fixedly connecting the external pump pipe to the interface plate hole 9, wherein the connection is detachable connection;
conveying the concrete in the jacking column to the cavity through an external pump pipe;
judging the pouring speed of the concrete through the observation hole, and adjusting the pumping pressure of the concrete pump;
sixthly, pouring concrete to the elevation;
and step seven, closing the valve to seal the jacking opening, and pushing in to close the check valve plate 17.
During the jacking process, a specially-assigned person is arranged to observe the jacking and pouring speed, contact with a concrete pump operator in time and adjust the pump speed and the pump pressure at any time. And (5) when the abnormality is found, immediately informing the pump to stop, and jacking after the reason is found.
If the pipe is blocked in the pump pipe, the pump is immediately stopped, the check raft plate at the interface is closed, the pump pipe is removed, and the jacking is continued after dredging.
And if the steel column is internally blocked, immediately stopping the pump, closing the check raft at the interface, and pouring after the steel column at the upper part of the concrete pouring surface is perforated again.
Claims (9)
1. The utility model provides a joint structure is pour in jacking of multicavity steel pipe-concrete, its characterized in that: the prefabricated switching device comprises a multi-cavity steel pipe fixedly connected to the multi-cavity steel pipe, the multi-cavity steel pipe is a three-cavity steel pipe and comprises an outer sleeve steel pipe and two inner partition plates (1) fixedly connected to the inner part of the outer sleeve steel pipe, the outer sleeve steel pipe is a rectangular steel pipe and comprises long side plates (2) on the front side and a long side and short side plates (3) on the left side and the right side, the inner partition plates (1) divide the inner part of the outer sleeve steel pipe into three cavities, namely a side cavity (4) and a middle cavity (5), the inner partition plates (1) are rectangular plates with equal height and equal width to the rectangular steel pipe, two ends of each rectangular plate are vertically and fixedly connected to the long,
the prefabricated switching device comprises an interface board (6), a welding board (7), a switching pipe (8) and a forked serial pipe, wherein the switching pipe (8) is horizontally arranged, the interface board (6) and the welding board (7) are vertically arranged, an interface board hole (9) which is adaptive to the size of the switching pipe (8) is formed in the center of the interface board (6), a welding board hole (10) which is adaptive to the size of the switching pipe (8) is also formed in the center of the welding board (7), the switching pipe (8) penetrates through the interface board hole (9) and the outer wall of the front end head of the switching pipe (8) is fixedly connected with the interface board hole (9), the switching pipe (8) penetrates through the welding board hole (10) and the outer wall of the middle part of the switching pipe (8) is fixedly connected with the welding board (7),
the branch string pipes are horizontally arranged and comprise three pipes at the same elevation position, namely a middle pipe (11) and two side pipes (12), the middle pipe (11) is fixedly communicated with the rear end of the switching pipe (8), the two side pipes (12) are fixedly communicated with the two sides of the rear end part of the switching pipe (8),
the front side surface of the bottom of the middle cavity of the long side plate (2) is provided with a switching tube hole (13) for a switching tube (8) to pass through, the position of the inner baffle plate (1) corresponding to the side tube (12) is provided with a side tube hole (14) for the side tube (12) to pass through, the rear end of the switching tube (8) passes through the switching tube hole (13) and is also positioned in the middle cavity (5), the rear side surface of the welding plate (7) is tightly attached to the front side surface of the long side plate (2) and is fixedly connected with the front side surface, the middle tube (11) is positioned in the middle cavity (5), the side tubes (12) at two sides respectively pass through the side tube hole (14), and the tail end part of the side tube (12) is positioned in the side cavity (4,
the interface board (6) is fixedly connected with an external pump pipe.
2. The multi-cavity steel tube concrete one-time jacking inner pouring interface structure according to claim 1, characterized in that: the middle pipe (11) is a linear pipe.
3. The multi-cavity steel tube concrete one-time jacking inner pouring interface structure according to claim 2, characterized in that: the side pipe (12) comprises a straight section (121) and a bent section (122), the bent section (122) is located in the side cavity (4), the bent section (122) is in an arc shape and is bent towards the inner side, and the direction of the nozzle of the side pipe (12) is consistent with the direction of the nozzle of the middle pipe (11).
4. The multi-cavity steel tube concrete one-time jacking inner pouring interface structure according to claim 3, characterized in that: the diameter ratio of the diameter of the branching pipe to the diameter of the external pump pipe is 0.6, and the diameter ratio of the diameter of the branching pipe to the diameter of the adapter pipe (8) is 0.72.
5. The multi-cavity concrete filled steel tube one-time jacking and pouring interface structure according to claim 3 or 4, wherein: the length of the straight section (121) is greater than that of the middle pipe (11).
6. The multi-cavity steel tube concrete one-time jacking inner pouring interface structure according to claim 5, characterized in that: the position of the orifice of the middle pipe (11) is back to the position of the orifice of the side pipe (12), and the positions of the orifices of the two side pipes (12) are on the same straight line.
7. The multi-cavity steel tube concrete one-time jacking inner pouring interface structure according to claim 6, characterized in that: prefabricated switching device still includes water conservancy diversion cluster pipe (20), the water conservancy diversion cluster pipe is L type turn-bend pipe, and horizontal segment fixed connection is at the tail end of branching cluster pipe, and vertical section is vertical upwards, and the pipe diameter of water conservancy diversion cluster pipe (20) is the same with the pipe diameter of branching cluster pipe, and the turn radius of water conservancy diversion cluster pipe (20) uses contactless multicavity steel pipe inner wall as the standard.
8. The multi-cavity steel tube concrete one-time jacking inner pouring interface structure according to claim 6, characterized in that: the concrete mortar-passing hole (15) is formed in the inner partition plate (1), the concrete mortar-passing hole (15) is located on the lower side of the side pipe hole (14), the outer sleeve steel pipe is provided with concrete observation holes (16), the concrete observation holes are formed in each cavity in a group, the concrete observation holes are arranged one by one at intervals of 1m, and the diameter of each concrete observation hole is 2 cm.
9. The multi-cavity steel tube concrete one-time jacking inner pouring interface structure according to claim 6, characterized in that: the prefabricated switching device further comprises a check valve plate (17), limiting pieces (18) of the check valve plate are fixedly connected to the front side surface of the interface plate (6), the check valve plate (17) is clamped between the limiting pieces (18) up and down, the limiting pieces (18) are four limiting rods fixedly connected to four corners of the check valve plate, the distance between the upper limiting rod and the lower limiting rod is matched with the width of the check valve plate (17), and the length of the check valve plate (17) is greater than that of the interface plate (6),
one end of the check valve plate (17) is provided with a pump pipe switch hole (19), and the check valve plate (17) can move between the limiting pieces (18) along the left-right direction and is used for controlling the opening and closing between the pump pipe switch hole (19) and the interface plate hole (9).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709148A (en) * | 2020-12-28 | 2021-04-27 | 中铁二局集团有限公司 | Method for pouring concrete in transverse supporting pipe between arch ribs of steel pipe bridge |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112709148A (en) * | 2020-12-28 | 2021-04-27 | 中铁二局集团有限公司 | Method for pouring concrete in transverse supporting pipe between arch ribs of steel pipe bridge |
| CN112709148B (en) * | 2020-12-28 | 2022-05-10 | 中铁二局集团有限公司 | Method for pouring concrete in transverse support pipe between steel pipe bridge arch ribs |
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