CN109958295B - Rail sliding torsion-resistant stable limiter for main reinforcement of reinforced concrete structure and construction process - Google Patents
Rail sliding torsion-resistant stable limiter for main reinforcement of reinforced concrete structure and construction process Download PDFInfo
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- CN109958295B CN109958295B CN201910331718.1A CN201910331718A CN109958295B CN 109958295 B CN109958295 B CN 109958295B CN 201910331718 A CN201910331718 A CN 201910331718A CN 109958295 B CN109958295 B CN 109958295B
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- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 32
- 230000002787 reinforcement Effects 0.000 title claims abstract description 23
- 238000010276 construction Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000004567 concrete Substances 0.000 claims abstract description 108
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 93
- 239000010959 steel Substances 0.000 claims abstract description 93
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000003466 welding Methods 0.000 claims description 20
- 238000004873 anchoring Methods 0.000 claims description 2
- 239000010953 base metal Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Revetment (AREA)
Abstract
The invention discloses a main reinforcement rail sliding torsion-resistant stable limiter of a reinforced concrete structure and a construction process, wherein the scheme breaks concrete in the middle of a reinforced concrete column to form upper concrete and lower concrete, and all longitudinal main reinforcements are exposed; the upper concrete longitudinal main ribs and the lower concrete longitudinal main ribs are respectively welded in the inner corners of the reinforced angle steel, the openings of the reinforced angle steel face different directions when the reinforced angle steel is arranged, the angle steel turning limit is formed, the construction is facilitated, the sealing steel plate and the sealing steel plate reinforcing plate are welded at the openings of the reinforced angle steel, and a triangular closed-loop limit cylinder is formed; the triangular closed-loop limiting cylinder body is used as a sliding track of a longitudinal main rib when the reinforced concrete column is lifted; and a fault is formed between the upper concrete and the lower concrete after the upper concrete is lifted upwards, and filled concrete is poured in the fault. The longitudinal main rib is restrained by the triangular closed-loop limiting cylinder body in the horizontal direction when moving, so that the stability of the structure during jacking is ensured.
Description
Technical Field
The invention relates to the field of engineering construction, in particular to the field of reinforcement and reconstruction of civil structure concrete engineering, and in particular relates to a main reinforcement rail sliding torsion-resistant stable limiter of a reinforced concrete structure and a construction process.
Background
The reinforcement and reconstruction of the existing building engineering become industry in recent years and in the future in the sun due to the requirements of economic construction and social development, and the main structure in the reinforcement and reconstruction is a reinforced concrete structure. The construction treatment that the existing structure needs to be reinforced and reformed, such as jacking, forced landing and the like is frequently encountered at present, but as the scientific technology or the process technology in the related engineering at home and abroad does not exist ready for use, the technology can be referred to for use, the invention can be really a sharp tool for solving the problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a main reinforcement rail sliding torsion-resistant stable limiter of a reinforced concrete structure and a construction process, solves the problem that the main reinforcement processing technology is restricted and limited due to the cutting-off and longitudinal jacking of vertical components such as reinforced concrete columns or shear walls, and avoids the key core of potential safety hazards caused by unstable structures.
The invention adopts the technical scheme that: a kind of reinforced concrete structure main reinforcement has rail to slide and antitorque steady stopper, including the reinforced concrete column that needs to be raised;
the reinforced concrete column comprises upper concrete, lower concrete, upper concrete longitudinal main ribs, lower concrete longitudinal main ribs, reinforcing angle steel, closed steel plates, closed steel plate reinforcing plates and filled concrete;
The middle of the reinforced concrete column breaks away the concrete to form upper concrete and lower concrete, and all longitudinal main ribs are exposed;
Cutting off the middle part of the longitudinal main rib after one end of the longitudinal main rib is welded with the corner rib to form an upper concrete longitudinal main rib and a lower concrete longitudinal main rib; the upper concrete longitudinal main ribs and the lower concrete longitudinal main ribs are sequentially welded in the inner angles of the reinforced angle steel respectively, the openings of the reinforced angle steel face different directions when the reinforced angle steel is arranged, angle steel turning limit is formed, a closed steel plate and a closed steel plate reinforcing plate are welded at the openings of the reinforced angle steel, and a triangular closed-loop limit cylinder is formed; the triangular closed-loop limiting cylinder body is used as a sliding track of a longitudinal main rib when the reinforced concrete column is lifted;
And a fault is formed between the upper concrete and the lower concrete after the upper concrete is lifted upwards, and filled concrete is poured in the fault.
Preferably, the longitudinal main ribs are fully welded at the corner of the two sides in the reinforcing angle steel, and the weld lengths of the upper concrete longitudinal main rib and the lower concrete longitudinal main rib respectively need to satisfy: the compressive (or tensile) strength of the weld joint is greater than that of the longitudinal main rib parent metal.
Preferably, the width of the flange of the reinforcing angle steel is 55mm, and the thickness of the reinforcing angle steel is 5mm.
Preferably, the strength of the filler concrete is one level greater than the strength of the upper concrete and the lower concrete.
The construction process of the main reinforcement rail sliding torsion-resistant stable limiter of the reinforced concrete structure comprises the following steps:
1. after engineering protective measures are taken, selecting a proper middle part of the reinforced concrete column to be lifted to break the concrete, forming upper concrete and lower concrete, and exposing all longitudinal main ribs;
2. each longitudinal main rib is respectively arranged in an inner angle of the reinforced angle steel, and when the reinforced angle steel is required to be arranged, the opening of the longitudinal main rib faces different directions to form angle steel turning limit;
3. Firstly, welding and fixing the single end of the upper part or the lower part of the longitudinal main rib with the reinforced angle steel; the specific welding mode is as follows: the welding seam positions of all the longitudinal main ribs are arranged at intervals, namely the lower part of a certain longitudinal main rib is welded and fixed with the reinforcing angle steel, and the upper part of the adjacent longitudinal main rib is welded and fixed with the reinforcing angle steel;
4. Each longitudinal main rib is cut off at the middle part to form an upper concrete longitudinal main rib and a lower concrete longitudinal main rib;
5. A closed steel plate is welded at the opening of the reinforcing angle steel and covers the welding seam of the longitudinal main rib, so that a sliding track is formed between the reinforcing angle steel and the sealing steel plate, and the sliding track is a triangular closed-loop limiting cylinder; the height L=L1+L2+L3 of the sealing steel plate, L1 is the length of a longitudinal main rib welding seam, L2 is the lifting height, and L3 is the constraint length of the longitudinal main rib in the sliding track;
6. Then the upper concrete is lifted upwards, the longitudinal main ribs move upwards along with the upper concrete in the sliding track, and the longitudinal main ribs are restrained by the triangular closed-loop limiting cylinder body in the horizontal direction when moving;
7. after the upper concrete is lifted in place, the exposed longitudinal main ribs are repair welded in the inner corners of the reinforced angle steel, and the opening of the reinforced angle steel is repair welded to close the steel plate reinforcing plate at the position;
8. and after the upper concrete is lifted, all faults are formed between the upper concrete and the lower concrete, and filling concrete is poured into the faults, so that the whole construction is completed.
Preferably, the length L1 of the welding seam of the longitudinal main rib is 6-7cm, and the anchoring length L3 of the longitudinal main rib in the sliding track is 1-2cm.
The beneficial effects are that: the invention adopts the whole set construction technology of the special limiter, innovates, reforms and consolidates the main reinforcement with the longitudinal direction from the original circular section, converts the main reinforcement into the connection conversion main reinforcement of circular and closed triangle, consolidates the treatment, selects the length of the reinforced angle steel according to the lifting height which is required to be reformed, and plays a role in temporary reinforcement when the vertical height of the reinforced concrete structure changes. When the longitudinal main rib moves, the longitudinal main rib is constrained by the triangular closed-loop limiting cylinder body in the horizontal direction, so that the structure can only be wholly stable during jacking. And through the welding of vertical main muscle and reinforcement angle steel for the component after the reinforcement has more reinforced compressive or tensile strength and torsional strength than originally, high-efficient, scientific solution actual engineering's the key core demand of technique that increases increasingly.
Drawings
FIG. 1 is a schematic view of a stopper according to the present invention;
FIG. 2 is a schematic cross-sectional view of FIG. 1;
Fig. 3 is a schematic view of the welding of the longitudinal main bars in the reinforced angle steel of the present invention.
Detailed description of the preferred embodiments
The invention is further described below with reference to the drawings and the detailed description.
As shown in fig. 1-3, a main bar of a reinforced concrete structure has a rail sliding torsion-resistant stable limiter, which comprises a reinforced concrete column which needs to be lifted;
The reinforced concrete column comprises an upper concrete 1, a lower concrete 2, an upper concrete longitudinal main rib 3, a lower concrete longitudinal main rib 4, reinforcing angle steel 5, a closed steel plate 6, a closed steel plate reinforcing plate 7 and filled concrete 8;
The middle of the reinforced concrete column breaks away the concrete to form an upper concrete 1 and a lower concrete 2, and all longitudinal main ribs are exposed;
The longitudinal main bars are cut off from the middle after one end of each longitudinal main bar is welded with each corner bar to form an upper concrete longitudinal main bar 3 and a lower concrete longitudinal main bar 4; the upper concrete longitudinal main rib 3 and the lower concrete longitudinal main rib 4 are welded in the inner angles of the reinforced angle steel 5 respectively in sequence, the openings of the reinforced angle steel 5 face different directions when being arranged, angle steel turning limit is formed, a closed steel plate 6 and a closed steel plate reinforcing plate 7 are welded at the openings of the reinforced angle steel 5, and a triangular closed loop limit cylinder is formed; the triangular closed-loop limiting cylinder body is used as a sliding track of a longitudinal main rib when the reinforced concrete column is lifted;
All faults are formed between the upper concrete and the lower concrete after the upper concrete is lifted upwards, and filling concrete 8 is poured on the faults.
The longitudinal main ribs are fully welded at the corner of the reinforcing angle steel 5 in a double-side manner, and the weld joint lengths of the upper concrete longitudinal main rib 3 and the lower concrete longitudinal main rib 4 respectively need to satisfy the following conditions: the compressive strength formed by the welding seam is larger than that of the base metal of the longitudinal main rib. The width of the flange of the reinforcing angle steel 5 is 55mm, and the thickness of the reinforcing angle steel 5 is 5mm. The strength of the filled concrete 8 is one level greater than the strength of the upper concrete 1 and the lower concrete 2.
The construction process of the main reinforcement rail sliding torsion-resistant stable limiter of the reinforced concrete structure comprises the following steps:
1. After necessary engineering protection measures are taken, selecting a proper middle part of a reinforced concrete column to be lifted to break concrete, forming upper concrete 1 and lower concrete 2, and exposing all longitudinal main ribs;
2. Each longitudinal main rib is respectively arranged in an inner angle of the reinforcing angle steel 5, and when the reinforcing angle steel 5 is required to be arranged, the opening of the reinforcing angle steel is opposite to different directions, so that angle steel turning limit is formed;
3. Firstly, welding and fixing the single end of the upper part or the lower part of the longitudinal main rib with the reinforcing angle steel 5; the specific welding mode is as follows: the welding seam positions of all the longitudinal main ribs are arranged at intervals, namely the lower part of a certain longitudinal main rib is welded and fixed with the reinforcing angle steel 5, and the upper part of the adjacent longitudinal main rib is welded and fixed with the reinforcing angle steel 5;
4. each longitudinal main rib is cut off at the middle part to form an upper concrete longitudinal main rib 3 and a lower concrete longitudinal main rib 4;
5. A closed steel plate 6 is welded at the opening of the reinforcing angle steel 5, and the closed steel plate 6 covers the welding seam of the longitudinal main rib, so that a sliding track is formed between the reinforcing angle steel 5 and the closed steel plate 6, and the sliding track is a triangular closed-loop limiting cylinder; the height L=L1+L2+L3 of the closed steel plate 6, L1 is the length of a longitudinal main rib welding seam, L2 is the lifting height, and L3 is the constraint length of the longitudinal main rib in the sliding track; l1 is 6-7cm, L3 is 1-2cm;
6. Then the upper concrete 1 is lifted upwards, the longitudinal main bars move upwards along with the upper concrete 1 in the sliding track, and the longitudinal main bars are restrained by the triangular closed-loop limiting cylinder body in the horizontal direction when moving;
7. after the upper concrete 1 is lifted in place, the exposed longitudinal main ribs are repair welded in the inner corners of the reinforcing angle steel 5, and the opening of the reinforcing angle steel 5 is repair welded to close the steel plate reinforcing plate 7 at the position;
8. all faults are formed between the upper concrete 1 and the lower concrete 2 after being lifted, and filling concrete 8 is poured into the faults to complete the whole construction.
The embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that many changes, modifications, substitutions and variations can be made to these embodiments without departing from the spirit and scope of the invention.
Claims (4)
1. A steel bar concrete structure main reinforcement rail sliding torsion-resistant stable limiter is characterized in that: comprises a reinforced concrete column which needs to be lifted;
the reinforced concrete column comprises upper concrete, lower concrete, upper concrete longitudinal main ribs, lower concrete longitudinal main ribs, reinforcing angle steel, closed steel plates, closed steel plate reinforcing plates and filled concrete;
The middle of the reinforced concrete column breaks away the concrete to form upper concrete and lower concrete, and all longitudinal main ribs are exposed;
Cutting off the middle part of the longitudinal main rib after one end of the longitudinal main rib is welded with the corner rib to form an upper concrete longitudinal main rib and a lower concrete longitudinal main rib; the upper concrete longitudinal main ribs and the lower concrete longitudinal main ribs are sequentially welded in the inner angles of the reinforced angle steel respectively, the openings of the reinforced angle steel face different directions when the reinforced angle steel is arranged, angle steel turning limit is formed, a closed steel plate and a closed steel plate reinforcing plate are welded at the openings of the reinforced angle steel, and a triangular closed-loop limit cylinder is formed; the triangular closed-loop limiting cylinder body is used as a sliding track of a longitudinal main rib when the reinforced concrete column is lifted;
forming a fault between the upper concrete and the lower concrete after the upper concrete is lifted upwards, wherein the fault is poured with filling concrete;
the longitudinal main ribs are fully welded at the corner of the two sides in the reinforcing angle steel, and the weld joint lengths of the upper concrete longitudinal main rib and the lower concrete longitudinal main rib respectively need to satisfy: the compressive strength formed by the welding seam is greater than that of the base metal of the longitudinal main rib;
The width of the flange of the reinforced angle steel is 55mm, and the thickness of the reinforced angle steel is 5mm.
2. The reinforced concrete structure main reinforcement rail sliding torsion-resistant stable limiter according to claim 1, wherein: the strength of the filling concrete is one level greater than the strength of the upper and lower concrete.
3. The construction process of the main reinforcement rail sliding torsion-resistant stable limiter of the reinforced concrete structure according to claim 1 or 2, wherein the construction process comprises the following steps: the method comprises the following steps:
1) After engineering protective measures are taken, the middle part of the reinforced concrete column needing to be lifted is selected to break the concrete, so that upper concrete and lower concrete are formed, and all longitudinal main ribs are exposed;
2) Each longitudinal main rib is respectively arranged in the inner angle of the reinforced angle steel, and the opening of the longitudinal main rib faces different directions when the reinforced angle steel is required to be arranged, so that the angle steel direction-changing limit is formed, and the operation is facilitated;
3) Firstly, welding and fixing the single end of the upper part or the lower part of the longitudinal main rib with the reinforced angle steel; the specific welding mode is as follows: the welding seam positions of all the longitudinal main ribs are arranged at intervals, namely the lower part of a certain longitudinal main rib is welded and fixed with the reinforcing angle steel, and the upper part of the adjacent longitudinal main rib is welded and fixed with the reinforcing angle steel;
4) Each longitudinal main rib is cut off at the middle part to form an upper concrete longitudinal main rib and a lower concrete longitudinal main rib;
5) A closed steel plate is welded at the opening of the reinforcing angle steel and covers the welding seam of the longitudinal main rib, so that a sliding track is formed between the reinforcing angle steel and the sealing steel plate, and the sliding track is a triangular closed-loop limiting cylinder; the height L=L1+L2+L3 of the sealing steel plate, L1 is the length of a longitudinal main rib welding seam, L2 is the lifting height, and L3 is the constraint length of the longitudinal main rib in the sliding track;
6) Then the upper concrete is lifted upwards, the longitudinal main ribs move upwards along with the upper concrete in the sliding track, and the longitudinal main ribs are restrained by the triangular closed-loop limiting cylinder body in the horizontal direction when moving;
7) After the upper concrete is lifted in place, the exposed longitudinal main ribs are repair welded in the inner corners of the reinforced angle steel, and the sealing steel plates are repair welded at the openings of the reinforced angle steel to increase the plates;
8) And after the upper concrete is lifted, all faults are formed between the upper concrete and the lower concrete, and filling concrete is poured into the faults, so that the whole construction is completed.
4. The construction process of the main reinforcement rail sliding torsion-resistant stable limiter of the reinforced concrete structure according to claim 3, wherein the construction process comprises the following steps: the length L1 of the longitudinal main rib weld joint is 6-7cm, and the anchoring length L3 of the longitudinal main rib in the sliding track is 1-2 cm.
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| CN201910331718.1A CN109958295B (en) | 2019-04-24 | 2019-04-24 | Rail sliding torsion-resistant stable limiter for main reinforcement of reinforced concrete structure and construction process |
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| CN209942271U (en) * | 2019-04-24 | 2020-01-14 | 南京盛圆土木工程高科技有限公司 | Rail sliding anti-torsion stable limiter for main reinforcement of reinforced concrete structure |
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| US8640419B2 (en) * | 2011-02-18 | 2014-02-04 | Senvex Co., Ltd. | Method of constructing prefabricated steel reinforced concrete (PSRC) column using angle steels and PSRC column using angle steels |
| KR101584008B1 (en) * | 2014-11-10 | 2016-01-20 | (주)더나은구조엔지니어링 | Structural Mold for Reinforced Concrete Column Using Profiled Steel Plate |
| CN204691301U (en) * | 2015-06-01 | 2015-10-07 | 兰州理工大学 | A kind of reinforced concrete frame structure joint reinforcing device |
| CN206128681U (en) * | 2016-10-26 | 2017-04-26 | 江苏伟宸建设工程有限公司 | Building reinforcement post |
| CN108457465A (en) * | 2018-03-18 | 2018-08-28 | 内蒙古华立建设工程有限公司 | It builds by laying bricks or stones and uses inner wall scaffold and its method of administration |
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| CN209942271U (en) * | 2019-04-24 | 2020-01-14 | 南京盛圆土木工程高科技有限公司 | Rail sliding anti-torsion stable limiter for main reinforcement of reinforced concrete structure |
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