CN111677326B - Temporary underpinning device for concrete column and using method thereof - Google Patents
Temporary underpinning device for concrete column and using method thereof Download PDFInfo
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- CN111677326B CN111677326B CN202010564065.4A CN202010564065A CN111677326B CN 111677326 B CN111677326 B CN 111677326B CN 202010564065 A CN202010564065 A CN 202010564065A CN 111677326 B CN111677326 B CN 111677326B
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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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
Abstract
The invention relates to the field of building construction, and particularly discloses a temporary underpinning device for a concrete column, which comprises an encircling column beam for wrapping the concrete column, wherein the encircling column beam comprises U-shaped column supports which are symmetrically arranged, and pouring gaps are reserved at the joint of the column supports and the concrete column; key grooves are uniformly distributed on the inner wall of the column support and the peripheral sides of the concrete columns; two connecting columns which are vertical to each other and penetrate through the column supports are arranged between the column supports, and two through grooves for accommodating the connecting columns are preset on the concrete column; inclined and crossed preformed holes are preset between the through grooves, prestressed pipelines are arranged in the preformed holes, two ends of each prestressed pipeline extend to penetrate through the column supports, and inclined prestressed ribs are arranged in the prestressed pipelines; four jacks are uniformly distributed between adjacent column holding beams, two symmetrically arranged support frames are also arranged between the adjacent column holding beams, and the support frames are vertical to the connecting columns; the problems of low shear strength, long construction time consumption and low side rigidity resistance of the underpinning device in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of building construction, and particularly discloses a temporary underpinning device for a concrete column and a using method thereof.
Background
The reinforced concrete structure is one of the most widely applied structural forms at home and abroad, and a large number of engineering structures need to be reinforced and modified due to the defects of design and construction, the damage of various physical, chemical and biological effects in the nature, the improvement of use requirements and the like. The structure underpinning technology is to realize the safe underpinning of the structure by changing a load transmission path, and the traditional method in the prior art is to newly build a reinforced concrete column support beside a column to be underpinned or adopt a large-area steel tube support. The method for newly manufacturing the reinforced concrete column support is long in time consumption, point load is increased, and the method is not advocated to be adopted in actual engineering; if a large-area steel pipe is adopted for supporting, because the holding force of each supporting point is different, uneven supporting force can be generated, the shearing strength is low, the lateral stiffness is low, potential safety hazards are easily generated, and a large amount of space is occupied, so that the construction is influenced.
Disclosure of Invention
The invention aims to provide a temporary underpinning device for a concrete column and a using method thereof, and aims to solve the problems of low shear strength, long construction time consumption and low side rigidity resistance of the underpinning device in the prior art.
In order to achieve the purpose, the basic scheme of the invention is as follows:
a temporary underpinning device for a concrete column comprises an embracing column beam used for wrapping the concrete column, wherein the embracing column beam comprises symmetrically arranged U-shaped column supports, and pouring gaps are reserved at the joint of the column supports and the concrete column; key grooves are uniformly distributed on the inner wall of the column support and the peripheral sides of the concrete columns; two connecting columns which are vertical and penetrate through the column supports are arranged between the column supports, and two through grooves for accommodating the connecting columns are preset on the concrete column; inclined and crossed preformed holes are preset between the through grooves, prestressed pipelines are arranged in the preformed holes, two ends of each prestressed pipeline extend to penetrate through the column supports, oblique prestressed tendons are arranged in the prestressed pipelines, and anchors are arranged at two ends of each oblique prestressed tendon; four jacks are uniformly distributed between adjacent column holding beams, two symmetrically arranged support frames are further arranged between the adjacent column holding beams, and the support frames are perpendicular to the connecting columns.
Optionally, the support frame comprises a rotating shaft and two support rods arranged in a crossed manner, the support rods are hinged to two ends of the rotating shaft in a distributed manner, connecting blocks are hinged to end portions of the support rods, and a screw rod is connected to each connecting block in a threaded manner; the opposite surfaces of the column holding beams are all connected with sliding rails through bolts, the connecting blocks are all connected on the corresponding sliding rails in a sliding mode, and a plurality of threaded holes corresponding to the screw rods are uniformly distributed in the sliding rails.
Optionally, a template group wrapping the column holding beam is arranged around the column holding beam, the template group comprises two symmetrically arranged box templates, and a cavity for accommodating the concrete column is arranged in the middle of the joint of the box templates; the grout groove has all been seted up to the upper surface of case template, and the grout groove is just to pouring the clearance.
Optionally, two ends of the joint of the box template are provided with vertical T-shaped grooves, and T-shaped blocks are arranged in the T-shaped grooves.
Optionally, the connecting column is a profile steel.
A use method of a temporary underpinning device for concrete columns comprises the following steps:
1) through grooves are preset at the upper end and the lower end of the part of the concrete column to be underpinned and are installation positions of column holding beams, and a plurality of key grooves are chiseled at four sides of the installation positions;
2) mounting the column supports on the two sides at the mounting position at the upper end, penetrating the connecting column through the column supports and the concrete column, and keeping the two ends of the connecting column not exposed out of the column supports to finish the primary mounting of the column supports; installing the prestressed pipeline in the preformed hole and the column support, and keeping two ends of the prestressed pipeline not exposed out of the column support; repeating the above process to complete the installation of the lower end column support;
3) respectively installing the box templates on the column supports, and inserting the T-shaped blocks into the T-shaped grooves to complete the installation of the box templates;
4) pouring concrete into the pouring gap through the grouting groove, and removing the box template after the concrete is solidified;
5) inserting the oblique prestressed tendons into corresponding prestressed pipelines respectively, and fixing two ends of the oblique prestressed tendons by using anchorage devices; meanwhile, the support frame is arranged between the upper column support and the lower column support, the connection between the slide rail and the column support is completed through the bolts, the support frame is adjusted through the sliding connection block, and the connection block is fixed on the slide rail through the bolts after the adjustment is completed; and then the four jacks are arranged on the upper surface of the lower end column support, the jacks are started to support the column support at the upper end of the column, and the integral installation of the temporary underpinning device for the concrete column is completed.
The working principle and the beneficial effects of the scheme are as follows:
1. in the scheme, the column support and the connecting column are adopted to form an assembly type installation mode, the installation time is short, the construction efficiency is high, and large-area steel pipe support is not needed; meanwhile, in the scheme, key grooves are uniformly distributed on the inner wall of the column support and the periphery of the concrete column, and after concrete is poured in the pouring gap, a formed key can greatly improve the shearing resistance and the side resistance of the column support; similarly, the oblique prestressed tendons arranged in a crossed mode support the column support, and the shearing resistance and the side resistance of the column support are further improved.
2. In this scheme, the support frame that sets up between the adjacent armful post roof beam improves the stability of embracing the post roof beam on the one hand, adopts the connected form of bracing piece, connecting block and slide rail simultaneously, can satisfy the continuous demand that changes in adjacent armful post roof beam interval.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is an enlarged schematic view at A of FIG. 1;
fig. 5 is a schematic structural diagram of a box template in an embodiment of the invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: concrete column 1, column support 2, through groove 3, slant prestressing tendons 4, spliced pole 5, keyway 6, prestressing force pipeline 7, jack 8, slide rail 9, connecting block 10, bracing piece 11, screw hole 12, case template 13, T-shaped piece 14, grout groove 15, pouring clearance 16.
Example (b):
a temporary underpinning device for a concrete column 1 comprises an encircling column beam used for wrapping the concrete column 1, wherein the encircling column beam comprises U-shaped column supports 2 which are symmetrically arranged, and pouring gaps 16 are reserved at the joint of the column supports 2 and the concrete column 1; key grooves 6 are uniformly distributed on the inner wall of the column support 2 and the peripheral side of the concrete column 1; two connecting columns 5 which are vertical and penetrate through the column supports 2 are arranged between the column supports 2, the connecting columns 5 are profile steels, and two through grooves 3 for accommodating the connecting columns 5 are preset on the concrete column 1; inclined and crossed preformed holes are preset between the through grooves 3, a prestressed pipeline 7 is arranged in each preformed hole, two ends of each prestressed pipeline 7 extend to penetrate through the column support 2, an inclined prestressed tendon 4 is arranged in each prestressed pipeline 7, and an anchorage device is arranged at two ends of each inclined prestressed tendon 4; four jacks 8 are uniformly distributed between adjacent column holding beams, two symmetrically arranged support frames are also arranged between the adjacent column holding beams, and the support frames are vertical to the connecting column 5; the supporting frame comprises a rotating shaft and two supporting rods 11 which are arranged in a crossed mode, the supporting rods 11 are hinged to two ends of the rotating shaft in a distributed mode, connecting blocks 10 are hinged to the end portions of the supporting rods 11, and screws are connected to the connecting blocks 10 in a threaded mode; the opposite surfaces of the column holding beams are all connected with sliding rails 9 through bolts, the connecting blocks 10 are all connected to the corresponding sliding rails 9 in a sliding mode, and a plurality of threaded holes 12 corresponding to the screw rods are uniformly distributed in the sliding rails 9; a template group wrapping the column-holding beam is arranged around the column-holding beam, the template group template comprises two symmetrically arranged box templates 13, and a cavity for accommodating the concrete column 1 is arranged in the middle of the joint of the box templates 13; grouting grooves 15 are formed in the upper surfaces of the box templates 13, and the grouting grooves 15 are opposite to the pouring gaps 16; perpendicular T-shaped grooves are formed in two ends of the joint of the box template 13, and T-shaped blocks 14 are arranged in the T-shaped grooves.
The specific implementation mode is as follows:
the method comprises the following steps:
1) through grooves 3 are preset at the upper end and the lower end of a part, needing to be underpinned, of the concrete column 1 to be an installation position of a column holding beam, and a plurality of key grooves 6 are chiseled at four sides of the installation position;
2) mounting the column supports 2 on the two sides at the mounting position at the upper end, penetrating the connecting column 5 through the column supports 2 and the concrete column 1, and keeping the two ends of the connecting column 5 not exposed out of the column supports 2 to finish the primary mounting of the column supports 2; installing a prestressed pipeline 7 in the preformed hole and the column support 2, and keeping two ends of the prestressed pipeline 7 not exposed out of the column support 2; the process is repeated to complete the installation of the lower end column support 2;
3) respectively installing the box templates 13 on the column supports 2, and inserting the T-shaped blocks 14 into the T-shaped grooves to complete the installation of the box templates 13;
4) pouring concrete into the pouring gap 16 through the grouting groove 15, and removing the box formwork 13 after the concrete is solidified;
5) respectively inserting the oblique prestressed tendons 4 into the corresponding prestressed pipelines 7, and fixing two ends of the oblique prestressed tendons 4 by using anchors; meanwhile, the support frame is arranged between the upper column support 2 and the lower column support 2, the connection between the sliding rail 9 and the column supports 2 is completed through bolts, the support frame is adjusted through the sliding connection block 10, and the connection block 10 is fixed on the sliding rail 9 through the bolts after the adjustment is completed; and then the four jacks 8 are arranged on the upper surface of the lower end column support 2 through bolts, the column support 2 at the upper end of the supporting column of the jacks 8 is started, and the integral installation of the temporary underpinning device of the concrete column 1 is completed.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the present invention.
Claims (5)
1. The utility model provides a concrete column underpins device temporarily which characterized in that: the column embracing beam comprises column embracing beams used for wrapping concrete columns, wherein each column embracing beam comprises symmetrically arranged U-shaped column supports, and pouring gaps are reserved at the joints of the column supports and the concrete columns; key grooves are uniformly distributed on the inner wall of the column support and the peripheral sides of the concrete columns; two connecting columns which are vertical and penetrate through the column supports are arranged between the column supports, and two through grooves for accommodating the connecting columns are preset on the concrete column; inclined and crossed preformed holes are preset between the through grooves, prestressed pipelines are arranged in the preformed holes, two ends of each prestressed pipeline extend to penetrate through the column supports, oblique prestressed tendons are arranged in the prestressed pipelines, and anchors are arranged at two ends of each oblique prestressed tendon; four jacks are uniformly distributed between adjacent column holding beams, two symmetrically arranged support frames are also arranged between the adjacent column holding beams, and the support frames are vertical to the connecting columns; the supporting frame comprises a rotating shaft and two supporting rods which are arranged in a crossed mode, the supporting rods are hinged to two ends of the rotating shaft in a distributed mode, connecting blocks are hinged to the end portions of the supporting rods, and screws are connected to the connecting blocks in a threaded mode; the opposite surfaces of the column holding beams are all connected with sliding rails through bolts, the connecting blocks are all connected on the corresponding sliding rails in a sliding mode, and a plurality of threaded holes corresponding to the screw rods are uniformly distributed in the sliding rails.
2. A concrete column temporary underpin device according to claim 1, characterized in that: a template group wrapping the column-holding beam is arranged around the column-holding beam, the template group template comprises two symmetrically arranged box templates, and a cavity for accommodating the concrete column is arranged in the middle of the joint of the box templates; the grout groove has all been seted up to the upper surface of case template, and the grout groove is just to pouring the clearance.
3. A concrete column temporary underpin device according to claim 2, characterized in that: the two ends of the joint of the box templates are provided with vertical T-shaped grooves, and T-shaped blocks are arranged in the T-shaped grooves.
4. A concrete column temporary underpin device according to claim 3, characterized in that: the connecting column is made of section steel.
5. A concrete column temporary underpin device according to claim 4, characterized in that: the method comprises the following steps:
1) through grooves are preset at the upper end and the lower end of the part of the concrete column to be underpinned and are installation positions of column holding beams, and a plurality of key grooves are chiseled at four sides of the installation positions;
2) mounting the column supports on the two sides at the mounting position at the upper end, penetrating the connecting column through the column supports and the concrete column, and keeping the two ends of the connecting column not exposed out of the column supports to finish the primary mounting of the column supports; installing the prestressed pipeline in the preformed hole and the column support, and keeping two ends of the prestressed pipeline not exposed out of the column support; repeating the above process to complete the installation of the lower end column support;
3) respectively installing the box templates on the column supports, and inserting the T-shaped blocks into the T-shaped grooves to complete the installation of the box templates;
4) pouring concrete into the pouring gap through the grouting groove, and removing the box template after the concrete is solidified;
5) inserting the oblique prestressed tendons into corresponding prestressed pipelines respectively, and fixing two ends of the oblique prestressed tendons by using anchorage devices; meanwhile, the support frame is arranged between the upper column support and the lower column support, the connection between the slide rail and the column support is completed through the bolts, the support frame is adjusted through the sliding connection block, and the connection block is fixed on the slide rail through the bolts after the adjustment is completed; and then the four jacks are arranged on the upper surface of the lower end column support, the jacks are started to support the column support at the upper end of the column, and the integral installation of the temporary underpinning device for the concrete column is completed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010564065.4A CN111677326B (en) | 2020-06-19 | 2020-06-19 | Temporary underpinning device for concrete column and using method thereof |
| PCT/CN2021/089490 WO2021253986A1 (en) | 2020-06-19 | 2021-04-25 | Concrete column temporary underpinning device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010564065.4A CN111677326B (en) | 2020-06-19 | 2020-06-19 | Temporary underpinning device for concrete column and using method thereof |
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| Publication Number | Publication Date |
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| CN111677326A CN111677326A (en) | 2020-09-18 |
| CN111677326B true CN111677326B (en) | 2022-01-18 |
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| CN202010564065.4A Active CN111677326B (en) | 2020-06-19 | 2020-06-19 | Temporary underpinning device for concrete column and using method thereof |
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| Country | Link |
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| CN (1) | CN111677326B (en) |
| WO (1) | WO2021253986A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677326B (en) * | 2020-06-19 | 2022-01-18 | 上海建工四建集团有限公司 | Temporary underpinning device for concrete column and using method thereof |
| CN112963013B (en) * | 2021-02-20 | 2022-08-26 | 成都建工第五建筑工程有限公司 | Concrete column replacement device and method |
| CN113152919A (en) * | 2021-03-23 | 2021-07-23 | 上海建工一建集团有限公司 | Prefabricated assembled composite lattice column for reinforcement and construction method thereof |
| CN114893019B (en) * | 2022-06-29 | 2023-06-27 | 上海建工四建集团有限公司 | Shear wall structure underpinning structure and construction method thereof |
| CN115370176B (en) * | 2022-07-12 | 2023-07-25 | 中建二局第三建筑工程有限公司 | In-situ reinforcement construction method in reconstruction process of old protection building |
| CN114961332B (en) * | 2022-08-01 | 2022-10-25 | 烟台南山学院 | Supporting device for repairing wooden column feet of ancient building |
| CN115341778A (en) * | 2022-08-16 | 2022-11-15 | 广东中青建筑科技有限公司 | Building rectification column node reinforcing method |
| CN115387475B (en) * | 2022-09-23 | 2024-01-09 | 上海建工四建集团有限公司 | Construction method suitable for thick-shell concrete structure |
| CN115387635B (en) * | 2022-09-29 | 2023-07-25 | 中建八局第一建设有限公司 | System for preventing concrete girderless floor basement from overload collapse |
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| GB1566250A (en) * | 1976-11-03 | 1980-04-30 | Pynford Ltd | Beams |
| JP2001123675A (en) * | 1999-10-25 | 2001-05-08 | Hazama Gumi Ltd | Temporary bracket jig and temporary bracket structure for building |
| CN201241480Y (en) * | 2008-06-20 | 2009-05-20 | 中国矿业大学 | Brick bearing wall reinforced concrete double-girder rib-piercing holding and exchanging apparatus |
| JP5431181B2 (en) * | 2010-01-20 | 2014-03-05 | 九州電力株式会社 | Main column material replacement device and main column material replacement method for tower structure |
| CN104499608B (en) * | 2014-12-19 | 2017-03-08 | 江苏鼎达建筑新技术有限公司 | The design and construction method of prestressing force section steel reinforcement shear wall |
| CN104846750B (en) * | 2015-04-20 | 2016-09-07 | 上海同罡建筑工程有限公司 | A kind of prestressing force friction-type thick pillar beam support and change method with seam |
| CN106948495A (en) * | 2017-04-07 | 2017-07-14 | 盐城工学院 | The prestressing force integral node and its construction method of steel core concrete column and beams of concrete |
| CN108265998A (en) * | 2017-12-29 | 2018-07-10 | 浙江省建筑设计研究院 | A kind of skyscraper supporting member flood method of replacing |
| CN108412223B (en) * | 2018-03-27 | 2023-09-29 | 广东中青建筑科技有限公司 | Deviation correcting structure and deviation correcting method for horizontal locking broken column |
| CN111101726A (en) * | 2018-10-26 | 2020-05-05 | 杭州固力建筑工程有限公司 | Application method of structure underpinning technology in reinforcement engineering |
| CN110043060B (en) * | 2019-03-29 | 2021-05-18 | 杭州通达集团有限公司 | Method for changing floor frame column into beam-on-column structure |
| CN110374349A (en) * | 2019-07-01 | 2019-10-25 | 安徽省建筑科学研究设计院 | A kind of impaired armored concrete cylinder underpins processing unit and its application method |
| CN110792282B (en) * | 2019-11-12 | 2022-05-17 | 苏州中固建筑科技股份有限公司 | Transformation method of frame column without support underpinning |
| CN110886332A (en) * | 2019-11-20 | 2020-03-17 | 上海建工四建集团有限公司 | Wall foundation underpinning device and construction method thereof |
| CN111519931A (en) * | 2020-05-08 | 2020-08-11 | 中国建筑第四工程局有限公司 | Support construction method and structure for transformation of existing building structure column |
| CN111677326B (en) * | 2020-06-19 | 2022-01-18 | 上海建工四建集团有限公司 | Temporary underpinning device for concrete column and using method thereof |
-
2020
- 2020-06-19 CN CN202010564065.4A patent/CN111677326B/en active Active
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2021
- 2021-04-25 WO PCT/CN2021/089490 patent/WO2021253986A1/en active Application Filing
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| Publication number | Publication date |
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| CN111677326A (en) | 2020-09-18 |
| WO2021253986A1 (en) | 2021-12-23 |
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