CN215289723U - Prefabricated bent cap subsection dry joint device - Google Patents
Prefabricated bent cap subsection dry joint device Download PDFInfo
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- CN215289723U CN215289723U CN202120855648.2U CN202120855648U CN215289723U CN 215289723 U CN215289723 U CN 215289723U CN 202120855648 U CN202120855648 U CN 202120855648U CN 215289723 U CN215289723 U CN 215289723U
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Abstract
The invention discloses a prefabricated capping beam subsection dry joint device, and relates to the technical field of construction; the device comprises a cross beam, a stand column for supporting the cross beam, a slide seat connected to the cross beam in a sliding manner, two supporting seats connected to the slide seat in a sliding manner, an adjusting mechanism for adjusting the distance between the supporting seats, a lifting rope for lifting a segment, a lifting mechanism for lifting the lifting rope and a driving mechanism for driving the slide seat to slide on the cross beam, wherein the lifting rope is positioned on the supporting seats. The utility model has the advantages that: the adjustable lifting rope interval, the different length's of adaptation festival section, the fast loading and unloading of lifting rope is realized to the connector simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the construction, in particular to prefabricated bent cap subsection dry joint device.
Background
In the construction of the viaduct, some large segments are often needed to be spliced to the cover beam cantilever segment, the cover beam cantilever segment is firstly close to the cover beam cantilever segment through a construction device, and then concrete is poured between the segments and the cover beam cantilever segment, and the splicing method is slow in speed.
At present, the dry-joint method is put forward for assembly, a construction device is adopted for hoisting the segments, and the distance between lifting ropes cannot be adjusted by the existing construction device.
Disclosure of Invention
The utility model aims at overcoming the above-mentioned shortcoming of prior art, provide a prefabricated bent cap subsection dry joint device, the interval of adjustable lifting rope to the festival section of the different length of adaptation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a prefabricated capping beam subsection dry-connection device comprises a cross beam, a stand column used for supporting the cross beam, a sliding seat connected to the cross beam in a sliding mode, two supporting seats connected to the sliding seat in a sliding mode, an adjusting mechanism used for adjusting the distance between the supporting seats, lifting ropes used for lifting sections, a lifting mechanism used for lifting the lifting ropes and located on the supporting seats, and a driving mechanism used for driving the sliding seat to slide on the cross beam.
Preferably, the adjusting mechanism comprises an adjusting screw rod penetrating through the two supporting seats and a rotating machine for rotating the adjusting screw rod; the supporting seat is provided with threads matched with the adjusting screw rod, and the directions of the threads of the two supporting seats are opposite.
Preferably, the drive mechanism is a hydraulic cylinder.
Preferably, the number of the lifting ropes is four, and the number of the lifting ropes connected to each supporting seat is two.
Preferably, the lower ends of the lifting ropes are distributed in a matrix.
Preferably, the upper side of the segment is provided with a connecting head for connecting with a lifting rope; the connector comprises two connecting plates fixedly connected with segments, a connecting shaft penetrating through the connecting plates, a limiting bulge fixedly connected with the connecting shaft, a sliding groove positioned on the side surface of the connecting shaft, a limiting rod connected in the sliding groove in a sliding manner, a reset spring positioned in the sliding groove and used for resetting the limiting rod, an inclined plane positioned at one end of the limiting rod far away from the reset spring, an adjusting groove positioned at one end of the connecting shaft, a pull wire with one end connected with the limiting rod, an adjusting block connected in the adjusting groove in a sliding manner, an adjusting bolt in threaded connection with the adjusting groove, and a reversing roller positioned in the connecting shaft and used for reversing the pull wire; one end of the stay wire, far away from the limiting rod, is connected with the adjusting block through the reversing roller, the adjusting block is rotatably connected with the adjusting screw rod, the connecting plate is located between the limiting rod and the limiting protrusion, the lower end of the lifting rope is located between the connecting plates, and the lower end of the lifting rope is connected with the connecting shaft.
Preferably, the limiting protrusion is annular.
The utility model has the advantages that: the adjustable lifting rope interval, the different length's of adaptation festival section, the fast loading and unloading of lifting rope is realized to the connector simultaneously.
Drawings
FIG. 1 is a schematic view of a segment as it approaches a capping beam cantilever segment;
FIG. 2 is a schematic view of an end face of a segment;
FIG. 3 is a schematic view of the jack when tensioned;
FIG. 4 is a schematic view of a connecting head;
fig. 5 is an enlarged view of fig. 4 at a.
In the figure: the device comprises a segment 1, a bent cap cantilever segment 2, a top prestressed tendon 3, a side prestressed tendon 4, a jack 5, a pore passage 6, a top temporary tensioning seat 7, a side temporary tensioning seat 8, a cross beam 9, an upright post 10, a sliding seat 11, a lifting rope 12, a supporting seat 13, an adjusting screw 14, a connecting plate 15, a connecting shaft 16, a limiting protrusion 17, a sliding groove 18, a limiting rod 19, a reset spring 20, an inclined plane 21, an adjusting groove 22, a pull wire 23, an adjusting block 24, an adjusting bolt 25 and a reversing roller 26.
Detailed Description
The invention will be further explained in detail with reference to the drawings and the following detailed description:
example (b):
referring to fig. 1 to 5, a method for dry joining of sections of a prefabricated bent cap includes the following steps:
step a: applying an adhesive to the end of segment 1; step a, when the adhesive is coated, the thickness of the adhesive is controlled to be 2.5mm, and meanwhile, in order to prevent the adhesive from blocking the cell channels 6, the distance between the adhesive and the outer edges of the cell channels 6 is kept at least 3 cm.
Step b: hoisting the segment 1 by using a construction device, and attaching one end of the segment 1 coated with the adhesive to the bent cap beam cantilever segment 2;
step c: two top prestressed tendons 3 are arranged on the upper side of the bent cap cantilever section 2, a side prestressed tendon 4 is arranged on each of the left side and the right side of the bent cap cantilever section 2, one end of each top prestressed tendon 3 is connected to the bent cap cantilever section 2, the other end of each top prestressed tendon 3 is connected to the upper side of the corresponding section 1, one end of each side prestressed tendon 4 is connected to the corresponding bent cap cantilever section 2, and the other end of each side prestressed tendon 4 is connected to the corresponding side of the corresponding section 1; in the step c, top temporary tensioning seats 7 are arranged on the upper sides of the cantilever sections 2 and the sections 1 of the bent cap, side temporary tensioning seats 8 are arranged on the side faces of the cantilever sections 2 and the sections 1 of the bent cap, one end of each top prestressed tendon 3 is connected to the corresponding section 1 through the top temporary tensioning seat 7, the other end of each top prestressed tendon 3 is connected to the corresponding top temporary tensioning seat 7 through a jack 5, one end of each side prestressed tendon 4 is connected to the corresponding section 1 through the side temporary tensioning seat 8, and the other end of each side prestressed tendon 4 is connected to the corresponding side temporary tensioning seat 8 through the jack 5.
Step d: the top prestressed tendons 3 and the side prestressed tendons 4 are tensioned through a jack 5, in the tensioning process, the construction device gradually reduces the tension on the segment 1, and finally the construction device is separated from the segment 1; the step d is specifically as follows: firstly uniformly applying a tension force of 200kN to the jack 5; the segment 1 and the bent cap cantilever segment 2 are attached more tightly; then the tension of the side prestressed tendons 4 is lifted to 400 kN; then the tension of the construction device on the segment 1 is reduced to 50% of the self weight of the segment 1, and the tension of the top prestressed tendon 3 is increased to 70% of the control force; then the tension of the construction device on the segment 1 is reduced to 25% of the self weight of the segment 1, and the tension of the top prestressed tendon 3 is lifted to 85% of the control force; the construction apparatus is then completely unloaded, the tensile force of the top tendon 3 is raised to the control force, and the tensile force of the side tendon 4 is also raised to the control force.
Step e: step e was performed 24 hours after the end of step d. The cover beam cantilever section 2 and the pore 6 of the section 1 penetrate through the steel strand and are tensioned to the design value.
The construction device comprises a cross beam 9, a stand column 10 for supporting the cross beam 9, a sliding seat 11 connected to the cross beam 9 in a sliding manner, two supporting seats 13 connected to the sliding seat 11 in a sliding manner, an adjusting mechanism for adjusting the distance between the supporting seats 13, a lifting rope 12 for lifting the segment 1, a lifting mechanism for lifting the lifting rope 12 and a driving mechanism for driving the sliding seat 11 to slide on the cross beam 9, wherein the lifting mechanism is positioned on the supporting seat 13.
The adjusting mechanism comprises an adjusting screw rod 14 penetrating through the two supporting seats 13 and a rotating machine for rotating the adjusting screw rod 14;
the supporting seat 13 is provided with threads matched with the adjusting screw 14, and the directions of the threads of the two supporting seats 13 are opposite.
The number of the lifting ropes 12 is four, and the number of the lifting ropes 12 connected to each supporting seat 13 is two. The lower ends of the lifting ropes 12 are distributed in a matrix.
The upper side of the segment 1 is provided with a connector used for being connected with a lifting rope 12;
the connector comprises two connecting plates 15 fixedly connected with the segment 1, a connecting shaft 16 penetrating through the connecting plates 15, a limiting bulge 17 fixedly connected with the connecting shaft 16, a sliding groove 18 positioned on the side surface of the connecting shaft 16, a limiting rod 19 connected in the sliding groove 18 in a sliding manner, a return spring 20 positioned in the sliding groove 18 and used for resetting the limiting rod 19, an inclined plane 21 positioned at one end of the limiting rod 19 far away from the return spring 20, an adjusting groove 22 positioned at one end of the connecting shaft 16, a pull wire 23 with one end connected with the limiting rod 19, an adjusting block 24 connected in the adjusting groove 22 in a sliding manner, an adjusting bolt 25 in threaded connection with the adjusting groove 22, and a reversing roller 26 positioned in the connecting shaft 16 and used for reversing the pull wire 23; the limit projection 17 is annular.
One end of the pull wire 23, which is far away from the limiting rod 19, is connected with an adjusting block 24 through a reversing roller 26, the adjusting block 24 is rotatably connected with the adjusting screw 14, the connecting plate 15 is positioned between the limiting rod 19 and the limiting bulge 17, the lower end of the lifting rope 12 is positioned between the connecting plates 15, and the lower end of the lifting rope 12 is connected with the connecting shaft 16.
The use method of the connector comprises the following steps: the lower extreme of lifting rope 12 is located between the connecting plate, connecting axle 16 passes connecting plate 15 and lifting rope 12 near the one end of gag lever post 19, gag lever post 19 is in through connecting plate 15, under the effect of inclined plane 21, gag lever post 19 can the indentation spout 18 in, under reset spring's effect behind connecting plate 15, come out from spout 18 again, until spacing arch leans on the connecting plate, when needs are with connector and lifting rope disconnection, rotate adjusting bolt, act as 23 down of acting as go-between, in the gag lever post indentation spout, then it can to take out the connecting axle.
Claims (7)
1. The prefabricated capping beam subsection dry-connection device is characterized by comprising a cross beam, a stand column for supporting the cross beam, a sliding seat connected to the cross beam in a sliding mode, two supporting seats connected to the sliding seat in a sliding mode, an adjusting mechanism for adjusting the distance between the supporting seats, a lifting rope for lifting a subsection, a lifting mechanism located on the supporting seat and used for lifting the lifting rope, and a driving mechanism used for driving the sliding seat to slide on the cross beam.
2. The precast capping beam segment dry-joint device of claim 1, wherein the adjusting mechanism comprises an adjusting screw passing through the two supporting seats, a rotator for rotating the adjusting screw;
the supporting seat is provided with threads matched with the adjusting screw rod, and the directions of the threads of the two supporting seats are opposite.
3. The precast capping beam segment dry-joint device according to claim 1, wherein the driving mechanism employs a hydraulic cylinder.
4. The precast capping beam segment dry joint device of claim 1, wherein the number of the lifting ropes is four, and the number of the lifting ropes connected to each supporting seat is two.
5. The precast capping beam segment dry-joint device of claim 4, wherein the lower ends of the lifting ropes are distributed in a matrix.
6. The precast capping beam segment dry-joining device according to claim 1, wherein the upper side of the segment is provided with a connector for connecting with a lifting rope;
the connector comprises two connecting plates fixedly connected with segments, a connecting shaft penetrating through the connecting plates, a limiting bulge fixedly connected with the connecting shaft, a sliding groove positioned on the side surface of the connecting shaft, a limiting rod connected in the sliding groove in a sliding manner, a reset spring positioned in the sliding groove and used for resetting the limiting rod, an inclined plane positioned at one end of the limiting rod far away from the reset spring, an adjusting groove positioned at one end of the connecting shaft, a pull wire with one end connected with the limiting rod, an adjusting block connected in the adjusting groove in a sliding manner, an adjusting bolt in threaded connection with the adjusting groove, and a reversing roller positioned in the connecting shaft and used for reversing the pull wire;
one end of the stay wire, far away from the limiting rod, is connected with the adjusting block through the reversing roller, the adjusting block is rotatably connected with the adjusting screw rod, the connecting plate is located between the limiting rod and the limiting protrusion, the lower end of the lifting rope is located between the connecting plates, and the lower end of the lifting rope is connected with the connecting shaft.
7. The precast capping beam segment dry-joint device according to claim 6, wherein the limiting protrusion is ring-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120855648.2U CN215289723U (en) | 2021-04-23 | 2021-04-23 | Prefabricated bent cap subsection dry joint device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120855648.2U CN215289723U (en) | 2021-04-23 | 2021-04-23 | Prefabricated bent cap subsection dry joint device |
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| Publication Number | Publication Date |
|---|---|
| CN215289723U true CN215289723U (en) | 2021-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120855648.2U Active CN215289723U (en) | 2021-04-23 | 2021-04-23 | Prefabricated bent cap subsection dry joint device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717966A (en) * | 2022-05-06 | 2022-07-08 | 安徽路达公路工程有限责任公司 | Bridge prestress device and bridge prestress construction method |
-
2021
- 2021-04-23 CN CN202120855648.2U patent/CN215289723U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717966A (en) * | 2022-05-06 | 2022-07-08 | 安徽路达公路工程有限责任公司 | Bridge prestress device and bridge prestress construction method |
| CN114717966B (en) * | 2022-05-06 | 2024-04-30 | 安徽路达公路工程有限责任公司 | Bridge prestress device and bridge prestress construction method |
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