CN109403655A - Beams of concrete across reinforcement means - Google Patents

Beams of concrete across reinforcement means Download PDF

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Publication number
CN109403655A
CN109403655A CN201811510624.2A CN201811510624A CN109403655A CN 109403655 A CN109403655 A CN 109403655A CN 201811510624 A CN201811510624 A CN 201811510624A CN 109403655 A CN109403655 A CN 109403655A
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China
Prior art keywords
reinforcement
thrust
stressed steel
pushing tow
pieces
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CN201811510624.2A
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CN109403655B (en
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田安国
陈舜禹
胡文硕
姚锦文
李青松
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Huaihai Institute of Techology
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Huaihai Institute of Techology
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0218Increasing or restoring the load-bearing capacity of building construction elements

Abstract

The invention discloses a kind of beams of concrete across reinforcement means, it is characterized by: to which two pieces of thrust anchor slabs are fixedly mounted on reinforcement, the pre-stressed steel plate that two pieces of middle parts are equipped with strip hole is set between two pieces of thrust anchor slabs, there are pushing tow interfaces between two pieces of pre-stressed steel plates, are equipped with top-pushing mechanism in pushing tow interface;In strip hole corresponding position to be implanted into anti-bulging stud on reinforcement;The smearing structure glue on pre-stressed steel plate passes through the strip hole of pre-stressed steel plate to the anti-bulging stud on reinforcement, and has made to push away side to withstand with thrust side and be coupled, and adds nut to tighten on anti-bulging stud;Before structure glue is fully cured, when applying prestressing force to pre-stressed steel plate by top-pushing mechanism and reach setting value, pushing tow joint weld is integrated, the nut on anti-bulging stud is tightened, is fully cured to structure glue, remove top-pushing mechanism.This method can carry out reinforcing in the case where the Concrete intensity insufficient of beam, there is that construction volume is small, convenient, at low cost advantage of constructing.

Description

Beams of concrete across reinforcement means
Technical field
The present invention relates to concrete structure reinforcement field, especially beams of concrete across reinforcement means.
Background technique
Reinforced concrete structure makes current the most widely used architecture structure form.Many building constructions are due to designing not When, use and maintenance is improper, build guality is poor or the natural calamities such as earthquake cause building structure to lead to the problem of or even jeopardize safety, or It is to require to reinforce original structure since new requirement, such as house change purposes or carry out adding layer.At present to existing It is important interior that the maintenance and renovation, adding storey for strengthening and seismic hardening etc. for having building construction have become one built in construction engineering design Hold.There are three types of Scheme of Strengthening basic at present: 1. increase section;2. reducing beam span;3. Vierendeel girder periphery is welded with, but these three Scheme is all there is great in constructing amount, the disadvantages of construction cost is high, and occupied space is big, it is therefore desirable to provide a kind of reinforcement means to solve Certainly problems of the prior art.
Summary of the invention
The technical problem to be solved in the present invention is that provide a kind of easy construction in view of the deficiencies of the prior art, save at This, the beams of concrete to occupy little space across reinforcement means.
The technical problem to be solved by the present invention is to what is be achieved through the following technical solutions, the present invention is a kind of beams of concrete Across reinforcement means, its main feature is that,
(1) two pieces of thrust anchor slabs, the opposite face of two pieces of thrust anchor slabs is fixedly mounted close to end positions on the top to reinforcement Equipped with the thrust side vertical to reinforcement;
(2) two pieces of pre-stressed steel plates are set, and two pieces of pre-stressed steel plates are laid between two pieces of thrust anchor slabs, two pieces of pre-stressed steel plates Be equipped with and push away side with rising for the thrust side of thrust anchor slab cooperation, the middle part of pre-stressed steel plate be equipped with several with act that push away side vertical Strip hole;There are pushing tow interfaces between two pieces of pre-stressed steel plates, are equipped with top-pushing mechanism in pushing tow interface, what top-pushing mechanism provided Thrust direction with act that push away side vertical;
Firstly, in strip hole corresponding position to be implanted with anti-bulging stud on reinforcement, between strip bore ends and anti-bulging stud There are pushing tow gaps;
Then, the smearing structure glue on the mounting surface of pre-stressed steel plate passes through the strip hole of pre-stressed steel plate on reinforcement Anti- bulging stud, and rising for pre-stressed steel plate is made to push away the thrust side of side and thrust anchor slab and withstand and be coupled, in anti-bulging stud Upper plus nut applies pretightning force to pre-stressed steel plate;
Finally, applying prestressing force, prestress application to two pieces of pre-stressed steel plates by top-pushing mechanism before structure glue is fully cured When to setting value, the pushing tow joint weld between two pieces of pre-stressed steel plates is integrated, the nut on anti-bulging stud is tightened, wait tie Structure glue is fully cured, and removes top-pushing mechanism.
The technical problem to be solved in the present invention can also further realize by the following technical programs, above-described mixed In the reinforcement means of solidifying soil girder span: the installation steps of the thrust anchor slab are to cut out to install thrust anchor slab position on reinforcement The concrete cover at place, corresponding position is punched on to reinforcement, and the depth in hole is 80 ~ 100mm, and bar planting is injected into hole Glue is implanted into stud, fully hardened to anchoring adhesive;The smearing structure glue on the mounting surface of thrust anchor slab, the mounting hole of thrust anchor slab It is bonded in across stud on reinforcement, and is tightened with nut.
The technical problem to be solved in the present invention can also further realize by the following technical programs, above-described mixed In the reinforcement means of solidifying soil girder span: the step of being implanted into anti-bulging bolt is that corresponding position is punched on to reinforcement, and the depth in hole is 80 ~ 100mm injects anchoring adhesive into hole, is implanted into stud, fully hardened to anchoring adhesive.
The technical problem to be solved in the present invention can also further realize by the following technical programs, above-described mixed In the reinforcement means of solidifying soil girder span: the top-pushing mechanism includes push plate, and push plate is vertically fixedly mounted on side prestress steel On plate, push plate plane is arranged in parallel with thrust side, and pushing tow spiral shell is fixedly mounted in the corresponding position on the pre-stressed steel plate of the other side Mother, pushing tow nut are arranged in parallel with push plate, and pushing tow nut is equipped with the pushing tow bolt cooperated with pushing tow nut, by tightening top Bolt is pushed away, applies prestressing force to two pieces of pre-stressed steel plates.
The technical problem to be solved in the present invention can also further realize by the following technical programs, above-described mixed In the reinforcement means of solidifying soil girder span: the length of pushing tow bolt is 20 ~ 30mm bigger than the width of pushing tow interface.
The technical problem to be solved in the present invention can also further realize by the following technical programs, above-described mixed In the reinforcement means of solidifying soil girder span: the step of welding thrust interface is, in thrust interface along being put into one section of diameter and pushing tow The adaptable reinforcing bar of the width of interface, the pushing tow joint weld between reinforcing bar and two pieces of pre-stressed steel plates is integrated.
The technical problem to be solved in the present invention can also further realize by the following technical programs, above-described mixed In the reinforcement means of solidifying soil girder span: the thrust anchor slab extends to form cover board, cover board pressure to pre-stressed steel plate side in thrust side Firmly rising for pre-stressed steel plate pushes away side.
The technical problem to be solved in the present invention can also further realize by the following technical programs, above-described mixed In the reinforcement means of solidifying soil girder span: the cover board of the thrust anchor slab with a thickness of 10 ~ 20mm.
Compared with prior art, the invention has the advantages that installing pre-stressed steel plate additional on to reinforcement, and by pushing away Top mechanism applies prestressing force to it, changes the stress of girder span, can carry out in the case where the Concrete intensity insufficient of beam Reinforcing applies the quantitative prestressing force of active to it by unloading to former concrete, reach reinforced concrete girder span by The purpose of pressure area intensity, and this method has that construction volume is small, it is convenient to construct, and it is at low cost, it is not take up space substantially and does not increase beam The advantages of self weight.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the invention;
Fig. 2 is schematic top plan view of the invention;
Fig. 3 is top-pushing mechanism front view;
Fig. 4 is top-pushing mechanism side view.
Specific embodiment
The specific technical solution of the present invention described further below, in order to which those skilled in the art is further understood that The present invention, without constituting the limitation to its right.
In Fig. 1: 1. thrust anchor slabs, 11. thrust sides, 12. cover boards, 2. pre-stressed steel plates, 21. push away side, 3. anti-bulging studs, 4. top-pushing mechanism, 5. pushing tow interfaces, 6. strip holes, 7. pushing tow gaps.
Referring to Fig.1, a kind of beams of concrete across reinforcement means, its main feature is that,
(1) two pieces of thrust anchor slabs 1 are fixedly mounted close to end positions on the top to reinforcement, two pieces of thrust anchor slabs 1 it is opposite Face is equipped with to be symmetrical arranged with the thrust side 11 vertical to reinforcement, two pieces of thrust anchor slabs 1;
(2) two pieces of pre-stressed steel plates 2 are set, and two pieces of pre-stressed steel plates 2 are laid between two pieces of thrust anchor slabs 1, two pieces of prestressing force Steel plate 2, which is equipped with, pushes away side 21 with rising for the thrust side 11 of thrust anchor slab 1 cooperation, the middle part of pre-stressed steel plate 2 be equipped with several with It rises and pushes away the vertical strip hole 6 in side 21;There are pushing tow interfaces 5 between two pieces of pre-stressed steel plates 2, and pushing tow is equipped at pushing tow interface 5 Mechanism 4, the thrust direction that top-pushing mechanism 4 provides with act that push away side 21 vertical, two pieces of pre-stressed steel plates 2 are arranged symmetrically;
In conjunction with Fig. 2, firstly, in 6 corresponding position of strip hole to be implanted with anti-bulging stud 3 on reinforcement, the end of strip hole 6 with There are pushing tow gaps 7 between anti-bulging stud 3, reserve the displacement space of generation of the pre-stressed steel plate after applying prestressing force;It is anti- The length of drum stud 3 is 30 ~ 50mm bigger than the thickness of pre-stressed steel plate 2;Such as, M16*80;
Then, the smearing structure glue on the mounting surface of pre-stressed steel plate 2 passes through the strip hole 6 of pre-stressed steel plate 2 to reinforcement On anti-bulging stud 3, and rising for pre-stressed steel plate 2 is made to push away the thrust side 11 of side 21 and thrust anchor slab 1 and withstand and be coupled, On anti-bulging stud 3 plus nut applies pretightning force to pre-stressed steel plate 2;By anti-bulging stud 3 and to reinforcement to pre-stressed steel plate 2 Necessary constraint is formed, pre-stressed steel plate 2 is made to be unlikely to stress external drum when applying prestressing force;
Finally, applying prestressing force, top-pushing mechanism to two pieces of pre-stressed steel plates 2 by top-pushing mechanism 4 before structure glue is fully cured When 4 pushing tow, controllable thrust is generated between pre-stressed steel plate 2, under the rigid condition of thrust anchor slab 1 and anti-bulging stud 3, is formed Pushing tow interface 5 between two pieces of pre-stressed steel plates 2 is welded as a whole, tightens anti-when prestress application is to setting value by prestressing force Nut on drum stud 3, after 3-4 hours, structure glue is fully cured, and removes top-pushing mechanism 4;Pass through anti-bulging stud 3 and structure Glue makes the integral co-operation in conjunction with compressive region concrete of pre-stressed steel plate 2;Pushing tow structure 4 may be reused.
The installation steps of the thrust anchor slab 1 are to cut out to protect to install the concrete at 1 position of thrust anchor slab on reinforcement Sheath, corresponding position is punched on to reinforcement, and the depth in hole is 80 ~ 100mm, and anchoring adhesive is injected into hole, is implanted into stud, to After 3-4 hours, anchoring adhesive is fully hardened;The smearing structure glue on the mounting surface of thrust anchor slab 1, the mounting hole of thrust anchor slab 1 are worn It crosses stud to be bonded in on reinforcement, after 2 ~ 3 hours, structure glue solidifies substantially, and is tightened with nut, applies compressive pre-stress, Its compressive pre-stress can be controlled by tightening the torque wrench of nut;Thrust anchor slab 1 by stud and structure glue with it is to be added Gu Liang is integrally consolidated, and is embedded in concrete, provides thrust function using its horizontal friction force, the end in 1 outside of thrust anchor slab is tight Paste concrete.
The step of being implanted into anti-bulging bolt 3 is that corresponding position is punched on to reinforcement, and the depth in hole is 80 ~ 100mm, to Anchoring adhesive is injected in hole, is implanted into stud, it is fully hardened to anchoring adhesive.
Referring to Fig. 3 and Fig. 4, the top-pushing mechanism 4 includes push plate 41, and push plate 41 is vertically fixedly mounted on side and answers in advance On power steel plate 2,4 plane of push plate is arranged in parallel with thrust side 11, the fixed peace of the corresponding position on other side pre-stressed steel plate 2 Fill pushing tow nut 42, pushing tow nut 42 is arranged in parallel with push plate 41, and pushing tow nut 42 with pushing tow nut 42 equipped with cooperating Pushing tow bolt 43 applies prestressing force to two pieces of pre-stressed steel plates 2 by tightening pushing tow bolt 43.
The length of pushing tow bolt 43 is 20 ~ 30mm bigger than the width of pushing tow interface 5.
The step of welding thrust interface 5 is, along the width for being put into one section of diameter and pushing tow interface 5 at thrust interface 5 Pushing tow interface 5 between the 2 of reinforcing bar and two pieces of pre-stressed steel plates is welded as a whole by adaptable reinforcing bar.
The thrust anchor slab 1 extends to form cover board 12 to 2 side of pre-stressed steel plate in thrust side 11, and cover board 12 pushes down pre- answer Rising for power steel plate pushes away side 21.
The cover board 12 of the thrust anchor slab 1 with a thickness of 10 ~ 20mm.
The thrust anchor slab 1 and pre-stressed steel plate 2 is the sealing of sj168 silicone weather resistant in the structure glue that mounting surface is smeared Glue, structure glue smear with a thickness of 5 ~ 7mm.
The width of the width and pre-stressed steel plate 2 of the thrust anchor slab 1 is isometric;The length of thrust anchor slab 1 is prestress steel The 1/4 ~ 1/3 of the length of plate 2.
Using the present invention, from the economic viewpoint, device is simple, and it is convenient to construct, and after the completion of construction, top-pushing mechanism can be with Disassembly & recycling recycles;From the aspect of the difficulty of construction technology, work progress only needs bar planting, tightening nut and welding skill Art;In general, entire work progress is simple and fast, high-efficient.

Claims (8)

1. a kind of beams of concrete across reinforcement means, it is characterised in that:
(1) two pieces of thrust anchor slabs, the opposite face of two pieces of thrust anchor slabs is fixedly mounted close to end positions on the top to reinforcement Equipped with the thrust side vertical to reinforcement;
(2) two pieces of pre-stressed steel plates are set, and two pieces of pre-stressed steel plates are laid between two pieces of thrust anchor slabs, two pieces of pre-stressed steel plates Be equipped with and push away side with rising for the thrust side of thrust anchor slab cooperation, the middle part of pre-stressed steel plate be equipped with several with act that push away side vertical Strip hole;There are pushing tow interfaces between two pieces of pre-stressed steel plates, are equipped with top-pushing mechanism in pushing tow interface, what top-pushing mechanism provided Thrust direction with act that push away side vertical;
Firstly, in strip hole corresponding position to be implanted with anti-bulging stud on reinforcement, between strip bore ends and anti-bulging stud There are pushing tow gaps;
Then, the smearing structure glue on the mounting surface of pre-stressed steel plate passes through the strip hole of pre-stressed steel plate on reinforcement Anti- bulging stud, and rising for pre-stressed steel plate is made to push away the thrust side of side and thrust anchor slab and withstand and be coupled, in anti-bulging stud Upper plus nut applies pretightning force to pre-stressed steel plate;
Finally, applying prestressing force, prestress application to two pieces of pre-stressed steel plates by top-pushing mechanism before structure glue is fully cured When to setting value, the pushing tow joint weld between two pieces of pre-stressed steel plates is integrated, the nut on anti-bulging stud is tightened, wait tie Structure glue is fully cured, and removes top-pushing mechanism.
2. beams of concrete according to claim 1 across reinforcement means, it is characterised in that: the installation of the thrust anchor slab walks It suddenly is to cut out to install the concrete cover at thrust anchor slab position on reinforcement, corresponding position is punched on to reinforcement, The depth in hole is 80 ~ 100mm, and anchoring adhesive is injected into hole, is implanted into stud, fully hardened to anchoring adhesive;In the peace of thrust anchor slab Smearing structure glue on dress face, the mounting hole of thrust anchor slab passes through stud and is bonded in on reinforcement, and is tightened with nut.
3. beams of concrete according to claim 1 across reinforcement means, it is characterised in that: be implanted into anti-bulging bolt the step of For corresponding position is punched on to reinforcement, and the depth in hole is 80 ~ 100mm, and anchoring adhesive is injected into hole, stud is implanted into, wait plant Muscle glue is fully hardened.
4. beams of concrete according to claim 1 across reinforcement means, it is characterised in that: the top-pushing mechanism includes pushing tow Plate, push plate are vertically fixedly mounted on the pre-stressed steel plate of side, and push plate plane is arranged in parallel with thrust side, pre- in the other side Pushing tow nut is fixedly mounted in corresponding position on stress steel plate, and pushing tow nut is arranged in parallel with push plate, and pushing tow nut is equipped with Apply prestressing force to two pieces of pre-stressed steel plates by tightening pushing tow bolt with the pushing tow bolt of pushing tow nut cooperation.
5. beams of concrete according to claim 4 across reinforcement means, it is characterised in that: the length of pushing tow bolt compares pushing tow Big 20 ~ the 30mm of the width of interface.
6. beams of concrete according to claim 1 across reinforcement means, it is characterised in that: welding thrust interface the step of For in the thrust interface reinforcing bar adaptable along the width for being put into one section of diameter and pushing tow interface, reinforcing bar and two pieces are answered in advance Pushing tow joint weld between power steel plate is integrated.
7. beams of concrete according to claim 1 across reinforcement means, it is characterised in that: the thrust anchor slab is in thrust side Cover board is extended to form to pre-stressed steel plate side, cover board pushes down rising for pre-stressed steel plate and pushes away side.
8. beams of concrete according to claim 7 across reinforcement means, it is characterised in that: the cover board of the thrust anchor slab With a thickness of 10 ~ 20mm.
CN201811510624.2A 2018-12-11 2018-12-11 Method for reinforcing concrete beam span Active CN109403655B (en)

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Application Number Priority Date Filing Date Title
CN201811510624.2A CN109403655B (en) 2018-12-11 2018-12-11 Method for reinforcing concrete beam span

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CN201811510624.2A CN109403655B (en) 2018-12-11 2018-12-11 Method for reinforcing concrete beam span

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CN109403655B CN109403655B (en) 2021-03-05

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110331867A (en) * 2019-07-04 2019-10-15 太原理工大学 A kind of assembled mortise and tenon hardened system and its assembly method for H profile steel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6167672B1 (en) * 1997-04-24 2001-01-02 Nippon Steel Corporation Supplementary reinforcing construction for a reinforced concrete pier
CN103422683A (en) * 2013-08-13 2013-12-04 上海其军加固工程有限公司 Method for reinforcing reinforced concrete structure with prestress binding steel
CN105781140A (en) * 2016-04-08 2016-07-20 广东工业大学 Self-anchored pre-stressed fiber reinforced composite cloth based concrete strengthening device and method
CN106760609A (en) * 2016-12-29 2017-05-31 华北水利水电大学 Combination assembling correction formula pre-stress fibre sheet material tensioning equipment and its construction method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6167672B1 (en) * 1997-04-24 2001-01-02 Nippon Steel Corporation Supplementary reinforcing construction for a reinforced concrete pier
CN103422683A (en) * 2013-08-13 2013-12-04 上海其军加固工程有限公司 Method for reinforcing reinforced concrete structure with prestress binding steel
CN105781140A (en) * 2016-04-08 2016-07-20 广东工业大学 Self-anchored pre-stressed fiber reinforced composite cloth based concrete strengthening device and method
CN106760609A (en) * 2016-12-29 2017-05-31 华北水利水电大学 Combination assembling correction formula pre-stress fibre sheet material tensioning equipment and its construction method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110331867A (en) * 2019-07-04 2019-10-15 太原理工大学 A kind of assembled mortise and tenon hardened system and its assembly method for H profile steel

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