CN201531124U - Graded external pre-stress strengthening masonry structure - Google Patents
Graded external pre-stress strengthening masonry structure Download PDFInfo
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- CN201531124U CN201531124U CN2009202100367U CN200920210036U CN201531124U CN 201531124 U CN201531124 U CN 201531124U CN 2009202100367 U CN2009202100367 U CN 2009202100367U CN 200920210036 U CN200920210036 U CN 200920210036U CN 201531124 U CN201531124 U CN 201531124U
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- masonry
- wall
- prestressed reinforcement
- tie beam
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Abstract
The utility model pertains to the technical field of seismic strengthening of buildings, and particularly relates to a graded external pre-stress strengthening masonry structure, which comprises a masonry body, a roof panel, a floor board, a ground plate, an original ring beam, a roof ring beam, a foundation wall, a foundation bottom plate, pre-stressed reinforcements, a top backing plate of the beam, a pre-stress grading key, a diagonal member, a bottom channel steel and a positioning screw. The pre-stressed reinforcements penetrate through the floor board and are arranged at the outside of the masonry body and close to two sides of the masonry body from the foundation bottom plate to the roof ring beam, and pre-tensile force is applied on the pre-stressed reinforcements. The internal pressure to the wall panel is increased, thus improving the internal shear-resistant bearing capacity and external bending-resistant bearing capacity of the panel of the masonry so as to improve the seismic resistance of the whole masonry structure. The masonry structure is realized by the pre-stress grading key; and according to the original stressed condition, the pre-stress is applied in grades, thus fully regulating the internal integral seismic resistance of the masonry. Mat reinforcements and cement mortar, together with the pre-stressed reinforcements, are also used to form constructional columns, thus improving the external bending resistance of the wall plane.
Description
Technical field
The utility model belongs to building aseismicity reinforcing technique field, is specifically related to a kind of classification external prestressing strengthening masonry structure.
Background technology
In Wenchuan earthquake, a large amount of masonry structures break because of shear strain, and cause the internal strain of excessive plane.The masonry of quadrature is then excessive because of deformity out of plane with it, and bending resistance difference and decaying causes the integral body of masonry structure to collapse thereupon.So improve the shear resistance of masonry structure is to reduce structure to be out of shape under geological process, keeps the common-denominator target of whole structural stability.Present newly-designed masonry structure is all strengthened the globality of masonry structure with constructional column, and the masonry structure of design does not all have constructional column before the seventies and eighties in last century.If add constructional column after adopting during seismic hardening, back strutting and integrality of wall are inevitable undesirable, and body of wall fluting strutting difficulty is also very big.Also useful steel bonding or carbon fiber are to masonry reinforcing person, but these two kinds of methods also have problem: the one, and the durability of binding material and integraty, the validity problem in when operation on old structure; The 2nd, cost is very high, can't reinforce by the method for this costliness for the public building and the local-style dwelling houses of a large amount of early stage construction of China; Also have, these two kinds of methods all are difficult to reach the continuity of consolidation effect on the horizontal boundary line of wall and the vertical boundary line of wall and wall and floor.So, also do not have the very high ruggedized construction of a kind of cost performance in China seismic hardening field that masonry is built in early days at present.
Summary of the invention
The purpose of this utility model is to provide a kind of classification external prestressing strengthening masonry structure.
The classification external prestressing strengthening masonry structure that the utility model is pointed out, by top masonry 1, bottom masonry 2, roof panel 3, floor plate 4, ground panel 5, original collar tie beam 6, roofing collar tie beam 7, foundation wall 8, sole plate 9, prestressed reinforcement 10, back backing plate 11, prestressing force classification key 14, diagonal member 16, bottom surface channel-section steel 17, pad and nut 18 and positioning screw 19 constitute, wherein, top masonry 1 is positioned at floor plate 4 tops, masonry 1 top in top is followed successively by roof panel 3, roofing collar tie beam 7, floor plate 4 belows are original collar tie beam 6, original collar tie beam 6 belows are bottom masonry 2, and bottom masonry 2 is followed successively by ground panel 5, foundation wall 8, floor 9, basis; Prestressed reinforcement 10 pass successively from top to bottom roofing collar tie beam 7, roof panel 3, top masonry 1, floor plate 4, original collar tie beam 6, bottom masonry 2, panel 5, foundation wall 8 and sole plate 9, prestressed reinforcement 10 1 ends are pressed on the roofing collar tie beam 7 by back backing plate 11, and the other end is fixed on the sole plate 9 by pad and nut 18 by bottom surface channel-section steel 17; Prestressed reinforcement 10 is to be provided with one group of prestressing force classification key 14 on floor plate 4 and the original collar tie beam 6 at the boundary that is positioned at top masonry 1 and bottom masonry 2, prestressing force classification key 14 is fixed on the prestressed reinforcement 10 by positioning screw 19, and it is to make top masonry 1 and bottom masonry 2 realize the precompression classification bottom that one block plate is pressed on original collar tie beam 6 by a nut that is enclosed within on the prestressed reinforcement 10; Masonry 2 both sides in bottom are respectively equipped with diagonal member 16, and diagonal member 16 1 ends connect prestressing force classification key 14, and the other end is fixed on the bottom masonry 2, and two diagonal members 16 are right-angled intersection to be arranged, and which is provided with flower basket bolt 15.
In the utility model, the radical of prestressed reinforcement 10 is determined on a case-by-case basis, prestressed reinforcement 10 is located at position, body of wall both sides (being adjacent to body of wall), and the raising of structural seismic performance (in the plane outside shear resistance and the plane bending resistance) realizes by presstressed reinforcing steel being applied pretension.Be exposed at outer prestressed reinforcement 10 appearances of wall and be coated with reinforced mesh 12, reinforced mesh 12 is fixed on the body of wall by locating pin 13.
In the utility model, when two reinforcing masonry structures were T-shaped intersecting, the prestressed reinforcement 10 that is positioned at the intersection was fixing by positioning screw 19.
In the utility model, when two reinforcing masonry structures were cross and intersect, prestressed reinforcement 10 was distributed in the intersection of masonry structure.
The utility model has the advantages that:
(1) seldom increases dead load (with steel bonding, body of wall powder expanded metal lath cement mortar ratio);
(2) improve the shearing resistance and the bending resistance (fundamental difference being arranged) of masonry by the shearing resistance mechanism (increase pressure) that changes the masonry inherence with all external reinforcing methods;
(3), adopt classification prestressing force countermeasure according to the different characteristics of original structure each several part body of wall pressurized.To the big body of wall of pressurized, add prestressing force less, increase its shear-carrying capacity with the right-angled intersection diagonal member.And for the upper strata body of wall, resistance to compression is had a surplus and the shearing resistance deficiency, then applies big pretension, increases its compressive stress and shear resistance.This way of suiting measures to local conditions can be given full play to the inherent shock resistance of original structure;
(4) easy in body of wall peripheral hardware prestressed reinforcement job practices;
(5) reinforcing runs through full structure, and other method shear resistance consolidation effect when passing through floor is discontinuous;
(6) pilaster about outstanding metope 40mm is only arranged, seldom increase the structural section size, do not influence building substantially and use;
(7) the stabilization works amount is little, and is expensive few;
(8) good endurance (but will consider loss of prestress).
Description of drawings
Fig. 1 reinforces elevation for masonry.
Fig. 2 is that allowable ratio of height to sectional thickness of masonry wall or column configured intermediate post is reinforced horizontal sectional drawing.
Fig. 3 is prestressing force classification key and local masonry generalized section.
Fig. 4 reinforces horizontal sectional drawing for masonry " fourth " font intersection in length and breadth.
Fig. 5 reinforces horizontal sectional drawing for masonry " ten " font infall in length and breadth.
Number in the figure: 1 is the top masonry, and 2 is the bottom masonry, and 3 is roof panel, and 4 is floor plate, 5 is the ground panel, and 6 is original collar tie beam, and 7 is the roofing collar tie beam, 8 is foundation wall, and 9 is sole plate, and 10 is prestressed reinforcement (strap bolt head), 11 is the back backing plate, and 12 is reinforced mesh, and 13 is locating pin, 14 is prestressing force classification key, and 15 is flower basket bolt, and 16 is flexible diagonal member, 17 is the bottom surface channel-section steel, and 18 is pad and nut, and 19 is positioning screw.
The specific embodiment
Further specify the utility model in conjunction with the accompanying drawings below by embodiment.
Embodiment 1: as shown in Figure 1-Figure 3, the utility model is from sole plate 9 body of wall both sides (being adjacent to body of wall), foundation wall 8, bottom masonry 2, original collar tie beam 6, floor plate 4, top masonry 1, roof panel 3 and roof collar tie beam 7, bury underground and prestressed reinforcement of tensioning 10 by the plane distribution requirement of constructional column, make body of wall be subjected to precompression with main stressed section at angle of cut place, precompression improves the shear strength of body of wall, also offset the tensile stress that the moment of flexure that produces because of seismic forces or vertical geological process produce in body of wall, reduce wall crazing, thereby avoid body of wall to lose shear resistance because of the level cracking.During enforcement, channel-section steel 17 levels in bottom surface penetrate sole plate 9 bottom surface foundation soils, and prestressed reinforcement 10 is fixed on the bottom surface channel-section steel 17.The roof utilizes original collar tie beam 7 or extention collar tie beam, and the prestressed reinforcement 10 bottom-up roof collar tie beam 7 usefulness back backing plates 11 of crossing are pressed on the roof collar tie beam 7, apply pretension with direct stretching method then.Emphasis is arranged but more all sidedly the multilayer body of wall is applied precompression.Because each layer body of wall pressured state is had any different, it is bigger to be in multistory building lower floor body of wall pressurized, due to its shear failure and non-pressure are not enough.Little to this situation precompression, or be aided with flexible diagonal member 16 its shear resistances of enhancing of body of wall both sides right-angled intersection.But the structure pilaster that prestressed reinforcement forms strengthens to some extent to the lateral stability and the resistance to compression meeting of body of wall.For the upper strata body of wall, generally be that the resistance to compression bearing capacity has more than needed greatly and the shearing resistance deficiency, so it is applied big pretension, its shear strength of raising under the condition that does not influence its anti-pressure ability.Therefore, body of wall " classification " applies the prestressing force problem to solve up and down at upper and lower different body of wall boundary one group of prestressing force classification key 14 just need to be set.Adopt this method to learn from other's strong points to offset one's weaknesses, the favorable factor of original structure is given full play to be the seismic hardening service according to original structure body of wall actual conditions.
After prestressing force is finished, be exposed at the outer prestressed reinforcement appearance of wall and fix on the wall, brush with cement mortar powder then with reinforced mesh 12 coverings and with locating pin 13.
As shown in Figure 4, be that two reinforcing masonry structures are T-shaped and intersect, arrange 6 prestressed reinforcements 10 in angle of cut position, and fix with the positioning screw 19 that connects.
As shown in Figure 5, be that two reinforcing masonry structures are cross and intersect, arrange 4 prestressed reinforcements 10 at the corner positions place, and fix with the positioning bar of perforation.
It is not enough that classification external prestressing strengthening masonry can be used for reinforcing the anti-seismic performance of having built for many years, but compressive property masonry building preferably.Concrete using method is as follows:
(1) reinforce roofing collar tie beam 7, place back backing plate 11, successively to roof panel 3, floor plate 4, panel 5 pass position boring at prestressed reinforcement 10;
(2) foundation bed bottom surface channel-section steel 17 is holed in prestressed reinforcement 10 corresponding positions, burn-on pad and nut 18, and protect, in order to avoid earth enters screw thread, press close to the boring of place, wall limit, draw only at sole plate 9 then, dig a hole in the side again, be pressed into bottom surface channel-section steel 17 from the side, make bolt hole aim at the hole of prestressed reinforcement 10, tear the gummed paper on the screw off, get final product the standing screw lower end; Below ground screw rod, the 17 galvanizing anticorrosions of bottom surface channel-section steel;
(3) connect with the long nut segmentation in the middle of the prestressed reinforcement 10, be convenient to install;
(4) during the classification pre-stress construction, prestressed reinforcement 10 need pass foundation wall 8, bottom masonry 2, top masonry 1 and carry out stretch-draw: earlier by than lower-prestressed to prestressed reinforcement 10 integral tensions, again 14 times square nuts of prestressing force classification key are held out against prestressing force classification key 14 base plates, stretch-draw prestressing force classification key 14 is finished up to pretension with epimere prestressed reinforcement 10 again;
(5) the net sheet 12 of wire-tiing after pretension stretch-draw is finished, placement positioning nail 13, screw rod is worn in the grout sealing, whitewashes the post appearance at last;
(6) for considering pretension creep loss, can in a week, do twice stretch-draw, reduce early stage draw.
For the anti-side bearing capacity of bottom wall deficiency person, the flexible diagonal member 16 that intersects of available prestressing force replenishes its anti-side bearing capacity.Still use prestressing force classification key 14 as fixed point, tubular flower basket bolt 15 adds prestressing force; For ledger beam supporting floor, beam-ends body of wall anti-pressure ability itself is with regard to not enough person, and available rigidity extra-column is made local stiffening.Reinforce altitude range from the basis to at the bottom of the beam of upper strata.
Classification external prestressing strengthening masonry can also be used for the design of new masonry building.This moment, structure was all identical with principle, just can finish in advance in construction with the body of wall coupling components and bury underground, and it is more simple to construct.In addition, the external prestressing strengthening masonry can also be used for retaining wall, the reinforcing in cofferdam.The generally not classification of prestressing force this moment, other reinforces identical with general masonry.
Claims (4)
1. classification external prestressing strengthening masonry structure, by top masonry (1), bottom masonry (2), roof panel (3), floor plate (4), ground panel (5), original collar tie beam (6), roofing collar tie beam (7), foundation wall (8), sole plate (9), prestressed reinforcement (10), back backing plate (11), prestressing force classification key (14), diagonal member (16), bottom surface channel-section steel (17), pad and nut (18) and positioning screw (19) constitute, it is characterized in that top masonry (1) is positioned at floor plate (4) top, top masonry (1) top is followed successively by roof panel (3), roofing collar tie beam (7), floor plate (4) below is original collar tie beam (6), original collar tie beam (6) below is bottom masonry (2), and bottom masonry (2) is followed successively by ground panel (5), foundation wall (8), floor (9), basis; Prestressed reinforcement (10) pass successively from top to bottom roofing collar tie beam (7), roof panel (3), top masonry (1), floor plate (4), original collar tie beam (6), bottom masonry (2), panel (5), foundation wall (8) and sole plate (9), prestressed reinforcement (10) one ends are pressed on the roofing collar tie beam (7) by back backing plate (11), and the other end is fixed on the sole plate (9) by pad and nut (18) by bottom surface channel-section steel (17); Prestressed reinforcement (10) is to be provided with one group of prestressing force classification key (14) on floor plate (4) and the original collar tie beam (6) at the boundary that is positioned at top masonry (1) and bottom masonry (2), prestressing force classification key (14) is fixed on the prestressed reinforcement (10) by positioning screw (19), this prestressing force classification key (14) is by a nut that is enclosed within on the prestressed reinforcement (10) one block plate to be pressed on original collar tie beam (6) bottom, makes top masonry (1) and bottom masonry (2) realize the precompression classification; Bottom masonry (2) both sides are respectively equipped with diagonal member (16), and diagonal member (16) one ends connect prestressing force classification key (14), and the other end is fixed on the bottom masonry (2), and two diagonal members (16) are right-angled intersection to be arranged, and which is provided with flower basket bolt (15).
2. classification external prestressing strengthening masonry structure according to claim 1, it is characterized in that prestressed reinforcement (10) is located at the body of wall both sides, and be adjacent to body of wall, be exposed at outer prestressed reinforcement (10) appearance of body of wall and be coated with reinforced mesh (12) covering, reinforced mesh (12) is fixed on the body of wall by locating pin (13).
3. classification external prestressing masonry structure according to claim 1 is characterized in that when two reinforcing masonry structures were T-shaped intersecting, the prestressed reinforcement (10) that is positioned at the intersection was fixing by positioning screw (19).
4. classification external prestressing masonry structure according to claim 1 is characterized in that prestressed reinforcement (10) is distributed in the intersection of masonry structure when two reinforcing masonry structures are cross and intersect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202100367U CN201531124U (en) | 2009-09-24 | 2009-09-24 | Graded external pre-stress strengthening masonry structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202100367U CN201531124U (en) | 2009-09-24 | 2009-09-24 | Graded external pre-stress strengthening masonry structure |
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| CN201531124U true CN201531124U (en) | 2010-07-21 |
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| CN2009202100367U Expired - Fee Related CN201531124U (en) | 2009-09-24 | 2009-09-24 | Graded external pre-stress strengthening masonry structure |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704704A (en) * | 2012-06-19 | 2012-10-03 | 北京市建筑工程研究院有限责任公司 | Vertical un-bonded prestressed anti-seismic strengthening structure of masonry building |
| CN105604344A (en) * | 2016-02-28 | 2016-05-25 | 叶香竹 | Reinforcing method of cracked interior wall |
| CN105696805A (en) * | 2016-03-10 | 2016-06-22 | 叶长青 | Brick column reinforcement method |
| CN106801517A (en) * | 2016-12-13 | 2017-06-06 | 宇杰集团股份有限公司 | A kind of schoolhouse surface consolidation of Prefabricated porous plate brick mixed structure strengthens method |
| CN107299773A (en) * | 2016-03-02 | 2017-10-27 | 叶香竹 | Load bearing wall reinforcing construction method |
| CN111734164A (en) * | 2020-07-09 | 2020-10-02 | 北京市建筑工程研究院有限责任公司 | Oblique steel pull rod reinforced brick masonry structure and construction method thereof |
| CN112177358A (en) * | 2020-08-10 | 2021-01-05 | 锦萧建筑科技有限公司 | Zipper type connecting mechanism of prefabricated column and mounting method thereof |
| CN114753668A (en) * | 2022-04-14 | 2022-07-15 | 江苏海洋大学 | Construction method for reinforcing brick masonry wall by unbonded prestressed steel wire ropes |
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2009
- 2009-09-24 CN CN2009202100367U patent/CN201531124U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704704A (en) * | 2012-06-19 | 2012-10-03 | 北京市建筑工程研究院有限责任公司 | Vertical un-bonded prestressed anti-seismic strengthening structure of masonry building |
| CN102704704B (en) * | 2012-06-19 | 2015-01-21 | 北京市建筑工程研究院有限责任公司 | Vertical un-bonded prestressed anti-seismic strengthening structure of masonry building |
| CN105604344A (en) * | 2016-02-28 | 2016-05-25 | 叶香竹 | Reinforcing method of cracked interior wall |
| CN105604344B (en) * | 2016-02-28 | 2018-01-30 | 叶香竹 | A kind of reinforcement means for having crack interior wall |
| CN107299773B (en) * | 2016-03-02 | 2019-08-30 | 叶香竹 | Load bearing wall reinforcing construction method |
| CN107299773A (en) * | 2016-03-02 | 2017-10-27 | 叶香竹 | Load bearing wall reinforcing construction method |
| CN105696805B (en) * | 2016-03-10 | 2017-11-28 | 叶长青 | Brick column reinforcing method |
| CN105696805A (en) * | 2016-03-10 | 2016-06-22 | 叶长青 | Brick column reinforcement method |
| CN106801517A (en) * | 2016-12-13 | 2017-06-06 | 宇杰集团股份有限公司 | A kind of schoolhouse surface consolidation of Prefabricated porous plate brick mixed structure strengthens method |
| CN106801517B (en) * | 2016-12-13 | 2020-06-16 | 宇杰集团股份有限公司 | External reinforcing and reinforcing method for school shed with prefabricated porous plate brick mixed structure |
| CN111734164A (en) * | 2020-07-09 | 2020-10-02 | 北京市建筑工程研究院有限责任公司 | Oblique steel pull rod reinforced brick masonry structure and construction method thereof |
| CN112177358A (en) * | 2020-08-10 | 2021-01-05 | 锦萧建筑科技有限公司 | Zipper type connecting mechanism of prefabricated column and mounting method thereof |
| CN114753668A (en) * | 2022-04-14 | 2022-07-15 | 江苏海洋大学 | Construction method for reinforcing brick masonry wall by unbonded prestressed steel wire ropes |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20170924 |
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| CF01 | Termination of patent right due to non-payment of annual fee |