CN210827121U - Upper and lower subsection embedded temporary connection structure for stand column - Google Patents
Upper and lower subsection embedded temporary connection structure for stand column Download PDFInfo
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- CN210827121U CN210827121U CN201921279920.6U CN201921279920U CN210827121U CN 210827121 U CN210827121 U CN 210827121U CN 201921279920 U CN201921279920 U CN 201921279920U CN 210827121 U CN210827121 U CN 210827121U
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Abstract
The utility model relates to a bridge prefabrication construction technical field especially relates to a pre-buried temporary connection structure of upper and lower subsection for stand, including built-in fitting, prestressing force board and prestressing tendons, the built-in fitting is pre-buried respectively in the upper and lower subsection of stand and respectively with one the prestressing force board is connected fixedly, the both ends of prestressing tendons respectively with be located two on the upper and lower subsection of stand the prestressing force board is connected fixedly and makes two the prestressing force board is connected into wholly and to temporary prestressing force is applyed to the upper and lower subsection of stand. The utility model has the advantages that: the pressure stress required by the bonding material is ensured, so that the connection strength between the upper section and the lower section of the upright post is improved; the high-precision control of the prestress applied to the upper and lower sections of the upright post can be realized, and the applied prestress can be effectively and uniformly transmitted to the upper and lower sections of the upright post; simple structure, reasonable, construction convenience can effectively improve the efficiency of construction, shortens the engineering time.
Description
Technical Field
The utility model relates to a bridge prefabrication construction technical field especially relates to a pre-buried temporary connection structure of upper and lower merogenesis for stand.
Background
With the green rapid construction, bridge prefabricated parts are used more and more frequently in the bridge field for construction, for example: prefabricated stand, prefabricated case roof beam etc.. For the upright column with the height higher than 13 meters, the construction is usually carried out by adopting a sectional prefabrication method, namely, the upright column is divided into a plurality of prefabricated sections along the height direction of the upright column, and then the prefabricated sections are spliced and fixed to form a whole. At present, epoxy resin is usually adopted as a bonding material to bond the upper section and the lower section between the upper section and the lower section of the upright column, however, the working requirement of the epoxy resin is 0.3MPa of compressive stress, and the self weight of the upright column cannot reach the compressive stress, so that the bonding strength between the upper section and the lower section cannot be ensured.
Disclosure of Invention
The utility model aims at providing a according to above-mentioned prior art not enough, provide a pre-buried temporary connection structure of upper and lower merogenesis for stand, thereby through set up the built-in fitting in the upper and lower merogenesis of stand and at the peripheral setting of upper and lower merogenesis with the built-in fitting temporary prestressing force device fixed mutually exert interim prestressing force to upper and lower merogenesis to satisfy the required compressive stress requirement of bonding material, and then guarantee the bonding strength between the upper and lower merogenesis of stand.
The utility model discloses the purpose is realized accomplishing by following technical scheme:
the utility model provides a pre-buried temporary connection structure of upper and lower merogenesis for stand for the interim prestressing force between the upper and lower merogenesis of stand is connected, its characterized in that: the prestressed concrete column is characterized by comprising embedded parts, prestressed plates and prestressed tendons, wherein the embedded parts are embedded in the upper section and the lower section of the column respectively and are connected and fixed with one prestressed plate respectively, and two ends of each prestressed tendon are connected and fixed with the two prestressed plates on the upper section and the lower section of the column respectively, so that the two prestressed plates are connected into a whole and apply temporary prestress to the upper section and the lower section of the column.
The embedded part comprises an embedded plate and an embedded sleeve arranged on the embedded plate, a cylinder hole of the embedded sleeve is reserved on the surface of the upper section and the lower section of the upright post, and the embedded part is connected and fixed with the prestressed plate through the embedded sleeve.
The prestressed plate is connected and fixed with the embedded sleeve through a screwed bolt.
And a plurality of embedded sleeves are uniformly arranged on the embedded plate, and a plurality of bolts matched with the embedded sleeves in number and positions are screwed into the prestressed plate to connect and fix the embedded plate and the embedded sleeves.
The embedded parts, the prestressed plates and the prestressed tendons are uniformly distributed along the outer side surfaces of the upper and lower sections of the upright post.
The prestressed plate is provided with a bearing plate for mounting the prestressed tendons and reinforcing plates arranged on two sides of the bearing plate, and the prestressed tendons are fixed on the bearing plate.
The utility model has the advantages that: the pressure stress required by the bonding material is ensured, so that the connection strength between the upper section and the lower section of the upright post is improved; the high-precision control of the prestress applied to the upper and lower sections of the upright post can be realized, and the applied prestress can be effectively and uniformly transmitted to the upper and lower sections of the upright post; simple structure, reasonable, construction convenience can effectively improve the efficiency of construction, shortens the engineering time.
Drawings
Fig. 1 is a schematic view of the installation structure of the present invention;
FIG. 2 is a front view of a middle, upper and lower segmented embedded part of the present invention;
FIG. 3 is a right side view of FIG. 2
Fig. 4 is a schematic structural view of the middle-upper segmental tension device of the present invention.
Detailed Description
The features of the present invention and other related features are described in further detail below by way of example in conjunction with the accompanying drawings to facilitate understanding by those skilled in the art:
as shown in fig. 1-4, the labels 1-10 are respectively shown as: the device comprises an upright post upper section 1, an upright post lower section 2, an upper section temporary pre-stressing device 3, a lower section temporary pre-stressing device 4, a pre-stressing tendon 5, an embedded part 6, an embedded sleeve 7, a pre-stressing plate 8, a bearing plate 9 and a reinforcing plate 10.
Example (b): as shown in fig. 1, the upper and lower segment embedded temporary connection structure for the stand column in the embodiment is used for temporary prestress connection between the upper segment 1 of the stand column and the lower segment 2 of the stand column, and prestress is applied to the upper segment of the stand column and the lower segment 2 of the stand column so as to meet the requirement of pressure stress required by a bonding material between the upper segment and the lower segment, and further guarantee the connection strength between the upper segment and the lower segment.
Specifically, as shown in fig. 1, an upper section temporary pre-stressing device 3 is arranged at a position close to the outer side surface of the upper section 1 of the upright post and the lower section 2 of the upright post, a lower section temporary pre-stressing device 4 is arranged at a position corresponding to the outer side surface of the lower section 2 of the upright post, the two temporary pre-stressing devices are connected and fixed into a whole through a pre-stressing tendon 5, and pre-stress provided by the pre-stressing tendon 5 is transmitted to the upper section 1 of the upright post and the lower section 2 of the upright post through the two temporary pre-stressing devices respectively, so that the pre-stress of the pre-stressing tendon 5 is increased between the two devices in addition to the pressure provided by the self-weight of the upright post, and the requirement of pressure stress required by a bonding material.
As shown in fig. 2 and fig. 3, the temporary connection structure for embedding the upper and lower sections of the column in this embodiment further includes embedded parts 6 embedded inside the upper section 1 of the column and the lower section 2 of the column, wherein the embedded parts 6 embedded in the upper section 1 of the column are used for installing and fixing the temporary pre-stressing device 3 of the upper section, and the embedded parts 6 embedded in the lower section 2 of the column are used for installing and fixing the temporary pre-stressing device 4 of the lower section. The four pivot positions of the embedded part 6 are respectively provided with an embedded sleeve 7, the embedded sleeve 7 is used as a device which is connected and fixed with the upper and lower segmental temporary prestressing devices, and the cylinder holes of the embedded sleeve are exposed out of the outer surface of the column when the upper and lower segments of the column are prefabricated.
As shown in fig. 4, the upper section temporary pre-stressing device 3 and the lower section temporary pre-stressing device 4 have the same structure and opposite installation directions, and are connected by the pre-stressing tendons 5. The segmented temporary prestressing device 3 is taken as an example and comprises a prestressing plate 8, a force bearing plate 9 and a reinforcing plate 10, wherein the prestressing plate 8 is provided with connecting holes corresponding to the number and the positions of the embedded sleeves 7 on the embedded part 6, and the prestressing plate 8 and the embedded part 6 can be connected and fixed by screwing bolts into the connecting holes so as to improve the transmission effect of prestressing force; the bearing plate 9 is horizontally arranged at the upper end part of the prestressed plate 8, and the bearing plate and the prestressed plate are fixedly connected; the reinforcing plates 10 are arranged below the bearing plate 9 and are symmetrically arranged on two sides of the bearing plate, and the reinforcing plates 10 are respectively connected and fixed with the bearing plate 9 and the prestressed plate 8 to improve the connection strength between the bearing plate and the prestressed plate, so that the transmission effect of prestress is ensured.
In some embodiments, the upper section temporary pre-stressing device 3 and the lower section temporary pre-stressing device 4 are perpendicular to each other, so that the pre-stressing tendons 5 are vertically arranged, and the pre-stressing provided by the pre-stressing tendons is applied to the upper section and the lower section of the upright column in the perpendicular direction, thereby avoiding construction errors caused by uneven pre-stressing.
In the embodiment, in specific implementation: in order to apply prestress to the upper section 1 and the lower section 2 of the upright column in a balanced manner, embedded temporary connecting structures consisting of an upper section temporary prestress device 3, a lower section temporary prestress device 4, a prestressed tendon 5 and an embedded part 6 can be uniformly arranged along the annular direction of the upright column body. The number of the embedded temporary connecting structures and the distance between the embedded temporary connecting structures can be obtained by calculation according to the required prestress.
The prestressing force applied by the prestressed tendons 5 can be applied by adopting a field tensioning mode, taking fig. 4 as an example, the upper end or the lower end of each prestressed tendon 5 is taken as a fixed end and is firstly fixed on the corresponding upper subsection temporary prestressing device 3 and the corresponding lower subsection temporary prestressing device 4, the other end is taken as a tensioning end for tensioning, and the prestressed tendons 5 are anchored to the corresponding temporary prestressing devices after being tensioned, so that the prestressed tendons 5 can provide the prestressing force. When a plurality of embedded temporary connecting structures are used simultaneously, prestress can be applied to the prestressed tendons 5 in all the embedded temporary connecting structures in a simultaneous synchronous tensioning or symmetrical tensioning mode.
After the bonding construction of the upper section and the lower section of the stand column is finished, the embedded temporary connecting structure can be detached from the upper section 1 and the lower section 2 of the stand column, and the cylinder holes of the embedded sleeves 7 exposed on the surface of the stand column can be buried in grouting and other modes, so that the surface integrity of the stand column is ensured.
Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims.
Claims (6)
1. The utility model provides a pre-buried temporary connection structure of upper and lower merogenesis for stand for the interim prestressing force between the upper and lower merogenesis of stand is connected, its characterized in that: the prestressed concrete column is characterized by comprising embedded parts, prestressed plates and prestressed tendons, wherein the embedded parts are embedded in the upper section and the lower section of the column respectively and are connected and fixed with one prestressed plate respectively, and two ends of each prestressed tendon are connected and fixed with the two prestressed plates on the upper section and the lower section of the column respectively, so that the two prestressed plates are connected into a whole and apply temporary prestress to the upper section and the lower section of the column.
2. The upper and lower segmental embedded temporary connecting structure for the upright column according to claim 1, which is characterized in that: the embedded part comprises an embedded plate and an embedded sleeve arranged on the embedded plate, a cylinder hole of the embedded sleeve is reserved on the surface of the upper section and the lower section of the upright post, and the embedded part is connected and fixed with the prestressed plate through the embedded sleeve.
3. The upper and lower segmental embedded temporary connecting structure for the upright column according to claim 2, wherein: the prestressed plate is connected and fixed with the embedded sleeve through a screwed bolt.
4. The upper and lower segmental embedded temporary connecting structure for the upright column according to claim 3, wherein: and a plurality of embedded sleeves are uniformly arranged on the embedded plate, and a plurality of bolts matched with the embedded sleeves in number and positions are screwed into the prestressed plate to connect and fix the embedded plate and the embedded sleeves.
5. The upper and lower segmental embedded temporary connecting structure for the upright column according to claim 1, which is characterized in that: the embedded parts, the prestressed plates and the prestressed tendons are uniformly distributed along the outer side surfaces of the upper and lower sections of the upright post.
6. The upper and lower segmental embedded temporary connecting structure for the upright column according to claim 1, which is characterized in that: the prestressed plate is provided with a bearing plate for mounting the prestressed tendons and reinforcing plates arranged on two sides of the bearing plate, and the prestressed tendons are fixed on the bearing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921279920.6U CN210827121U (en) | 2019-08-08 | 2019-08-08 | Upper and lower subsection embedded temporary connection structure for stand column |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921279920.6U CN210827121U (en) | 2019-08-08 | 2019-08-08 | Upper and lower subsection embedded temporary connection structure for stand column |
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| CN210827121U true CN210827121U (en) | 2020-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789811A (en) * | 2021-09-16 | 2021-12-14 | 北京科技大学 | Temporary fastening connection system for prefabricated large components |
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2019
- 2019-08-08 CN CN201921279920.6U patent/CN210827121U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789811A (en) * | 2021-09-16 | 2021-12-14 | 北京科技大学 | Temporary fastening connection system for prefabricated large components |
| CN113789811B (en) * | 2021-09-16 | 2022-04-26 | 北京科技大学 | Temporary fastening connection system for prefabricated large components |
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