CN203129623U - Composite strengthening structure for building - Google Patents
Composite strengthening structure for building Download PDFInfo
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- CN203129623U CN203129623U CN 201320081619 CN201320081619U CN203129623U CN 203129623 U CN203129623 U CN 203129623U CN 201320081619 CN201320081619 CN 201320081619 CN 201320081619 U CN201320081619 U CN 201320081619U CN 203129623 U CN203129623 U CN 203129623U
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Abstract
A composite strengthening structure for a building comprises a plurality of steel boards arranged on the surface of the building to be strengthened, and a carrying bar net around the building to be strengthened. Interfacial agent layers are arranged on the surface of the building to be strengthened and on surfaces of the steel boards. The surface of the interfacial agent layer is provided with a high-performance polymer mortar adhesion layer. The carrying bar net is arranged on outer surfaces of the steel boards through steel pressing strips, transverse rods are evenly arranged between each two adjacent steel boards, an inclined rod is arranged between each two adjacent transverse rods, and two ends of each inclined rod are fixedly connected with the transverse rods. Reinforced high-performance mortar and an adhesive steel board strengthening technology are combined, advantages of the reinforced high-performance mortar and the adhesive steel board strengthening technology are in full use and defects are avoided. Due to the fact that the steel boards are adhered to the surface of the building to be strengthened, the carrying bar net is fixed on the surfaces of the steel boards and the interfacial agent layer and the high-performance polymer mortar layer are sprayed on the surface of the building to be strengthened and the surfaces of the steel boards, and bearing capacity, ductility and rigidity of the building originally to be strengthened are improved than those of a building where only the steel boards are used or the carrying bar net and the high-performance mortar are used.
Description
Technical field
The utility model belongs to construction engineering technical field, relates in particular to the construction reinforced structure that a kind of building to concrete structure or masonry structure is repaired and reinforced.
Background technology
Along with China's development of economic construction, civil engineerings such as bridge, building have obtained rapidly.Owing to reasons such as the transformation of building purposes, the lifting of bridge load grade, earthquake damage, explosive damages, cause the maintenance and reinforcement of works.Industry is transformed in China's structural strengthening at present becomes one of field of civil engineering main industries.The main reinforcing technique of current the sector has FRP carbon cloth, carbon fiber board etc.) reinforcing technique, reinforcement High Performance Mortar reinforcing technique, affixing steel plate reinforcement technology, increasing section reinforcing technique etc.
FRP reinforces: the constructing operation of this technology and construction quality be good, little to the damage of original structure, do not need to destroy original structure, little to the influence of original structure headroom, can not change original artistic characteristic, better to the inhibition in crack when improving bearing capacity, it is composite material reinforced to paste FRP, also can carry out reinforcement to oblique curved and abnormally-structured grade; But FRP also has the intensity of following weakness: FRP very high, and modulus of elasticity is relatively low, and when taking full advantage of its intensity, FRP needs suitable distortion, and the structure that also requires to reinforce for rigidity is quite inapplicable; Refractoriness and the resistance to elevated temperatures of pasting the used epoxy resin of FRP material are poor, and running into fire etc. influences bigger to the strenthening member stress performance; Strenthening member ductility deficiency can cause the brittle fracture of carbon fiber when the deformation of member is excessive, thereby causes the brittle fracture of structure, for need moderate finite deformation or concerning shockproof requirements than the higher structure, this point is very disadvantageous; The epoxy resin layer transfer shearing force is limited, and shear strain constantly increases, and stripping damage will take place the shearing strain rear interface that oversteps the extreme limit, and makes the intensity of FRP to be fully used; Simultaneously, connecting portion also can become the weak link of whole member.
The reinforcement High Performance Mortar is reinforced: this technology is compared with traditional method for strengthening and repairing such as steel bonding, sprayed mortar reinforcing technique etc., and tangible technical advantage is arranged, and mainly show following several aspect: steel mesh reinforcement etc. can adopt high-strength material, the tensile strength height; The surface is difficult for getting rusty after treatment, and good with the adhesion stress of mortar; High Performance Mortar can be well be reinforced member and be bonded as a whole co-operation; Can effectively improve the bending resistance, shear-carrying capacity and the deformability that are reinforced member, improve stiffness of structural member; Reinforce surface layer thin (back-up coat be generally 15mm one 25mm thick), to almost not influence of headroom; The same performance of the principal rod that this reinforcing technique adopts and inorganic coagulation material and steel concrete, same life-span are traditional constructional materials commonly used, himself anticorrosion, high temperature resistant, fireproof performance is good; Short construction period does not need large-scale facility, equipment; Construction is disturbed little, can implement the construction of ruggedized construction in less space, and is the dust when handling except concrete surface need be controlled, almost noiseless to the normal use of buildings in general; The technology constructing operation is convenient, and effectively bond area can reach 100 substantially under the normal construction condition, and construction quality can effectively be guaranteed; Reinforcing the back dead load increases not quite, and structure apparent size and alteration of form are very little, compare with other reinforcement means, have saved a large amount of mechanical stage student contributions pooled to pay for class activities, labour cost and check fee; Widely applicable, can be widely used in the reinforcing and repairing of various structure typess (as bridge, building, structure, tunnel, culvert etc.), various planform (as rectangle, circle, curved-surface structure etc.), various structure position (Ru Liang, plate, post, arch, shell etc.); Maintenance cost is low, and maintenance cost reduces more than 1/2 at least than other reinforcement means, and maintenance cycle significantly prolongs, thereby reduces maintenance cost significantly.But also there is following shortcoming in this reinforcing technique: this method need be passed through fixedly principal rod such as expansion bolt, shearing resistance pin, and the shearing resistance adhesion strength is provided, and construction bothers and the original structure structure is caused certain damage; The bonding stripping damage takes place in transaction between back-up coat and the original structure, and the intensity of reinforcement material is difficult for taking full advantage of; Under the situation that rigidity and the ductility of structure are had relatively high expectations, be difficult to satisfy.
Steel-bonded reinforcement: this technology does not increase the load of member and structure substantially, does not change intrinsic structural system and stress form, do not influence bridge the use clear space, do not influence the outward appearance of member; The bonding adhesive firm time is fast, short construction period; Bonding adhesive intensity is higher than concrete body intensity, can make to reinforce that body forms a good whole with former member and co-operation is stressed more even, less in concrete generation stress concentration phenomenon; Consolidation effect is remarkable, and technology is simple, does not need special installation, and required labour is few, easy operating.But the anchoring problem of steel-bonded reinforcement light plate is more outstanding, must guarantee bond damage phenomenons such as steel plate must not come unstuck before breaking, and requiring steel plate to be cut bearing capacity in the bonding of anchorage zone must be greater than the tension bearing capacity of steel plate; In addition, for the requirement for anticorrosion height of steel plate, the long-time maintenance cost is high slightly.
Increasing section is reinforced: this technology is by increasing the size of soffit or side, increase and join main muscle, effective height and the flexural strength of raising beam or post, thereby raising structural bearing capacity.Be a kind of traditional reinforcement means in China's enlarging section method, technology is simple, and is widely applicable.But the situ wet work operations amount that this method requires is big, and curing time is longer, reinforcement makes bridge deadweight and dead load moment of flexure increase more, the original concrete strength restriction of bearing capacity pressure zone, and influence the structure headroom, the original structure usage space there is considerable influence.
The utility model content
The purpose of this utility model is to overcome above-mentioned deficiency a kind of building composite reinforcing structure is provided, and it is reasonable in design, easy construction, structural bearing capacity, ductility and good rigidity are treated the ruggedized construction not damaged, and antiseptic property is good, engineering cost is low, and is practical, easy to utilize.
A kind of building composite reinforcing structure, comprise be arranged on the polylith steel plate of waiting to reinforce building surface and around and tensioning be arranged on the described principal rod net of waiting to reinforce around the building, wait to reinforce building surface and surface of steel plate and be provided with the interfacial agents layer, the interfacial agents laminar surface is provided with high-performance polymer mortar bonding layer, principal rod Netcom cross the steel press strip and be installed in steel plate and the steel press strip in the external surface that is bolted to steel plate on, between adjacent two steel plates, evenly be provided with cross bar, being provided with brace between the adjacent crossbars, fixedlys connected with steel plate and cross bar in the two ends of brace.
Above-mentioned building composite reinforcing structure, the surface of described high-performance polymer mortar bonding layer are provided with high performance polymer cement slurry topping.
Above-mentioned building composite reinforcing structure, described principal rod net is high strength steel strand net, steel mesh reinforcement or gauze wire cloth.
Above-mentioned building composite reinforcing structure, the thickness of described interfacial agents layer are 1mm-2mm.
Above-mentioned building composite reinforcing structure, the thickness of described high-performance polymer mortar bonding layer is 15mm-25mm.
Above-mentioned building composite reinforcing structure, the thickness of described high performance polymer cement slurry topping is 1mm-2mm.
Adopt technique scheme, the utility model has following advantage:
1, the utility model is reasonable in design, easy construction, and the material environmental protection, back-up coat is thin, and is little to the influence of structure clear space.
2, the utility model is based on reinforcement High Performance Mortar and affixing steel plate reinforcement technology, with the two combination, take full advantage of advantage separately and avoided its shortcoming, by wait to reinforce the building surface affixing steel plate, at the fixing principal rod net and waiting to reinforce building and surface of steel plate spraying interfacial agents layer and high-performance polymer screed of surface of steel plate, back-up coat principal rod good dispersion, can make former bearing capacity, ductility and the ratio of rigidity of strenthening member treated use steel plate separately or use principal rod net and High Performance Mortar, all increase.
3, the bolt in the utility model only connects steel press strip and steel plate, do not anchor to and wait to reinforce in the building, can reduce reinforcing to former damage of waiting to reinforce building, can avoid the construction damage that too much expansion bolt caused building former to be reinforced during the reinforcement High Performance Mortar was reinforced in the prior art, play simultaneously and shear the effect that connects, avoid between steel plate and the high-performance polymer mortar bonding layer stripping damage taking place.
4, the utility model is at the fixing principal rod net of surface of steel plate, can play the effect of anchor plate and stirrup on the one hand, thereby avoid steel plate before surrender and former wait to reinforce stripping damage takes place between the building, the principal rod net plays a part to shear between high-performance polymer mortar bonding layer and steel plate to be connected on the other hand, can avoid between high-performance polymer mortar bonding layer and the steel plate stripping damage taking place.
5, in the slurry topping of the high performance polymer cement in the utility model and high-performance polymer mortar bonding layer are wrapped in steel plate; improved the durability of steel plate; exempt the preservative treatment in the affixing steel plate reinforcement, prolonged maintenance period, saved engineering cost.
6, of the present utility model practical, easy to utilize.
In sum, the utility model is reasonable in design, easy construction, and structural bearing capacity, ductility and good rigidity are treated the ruggedized construction not damaged, and antiseptic property is good, and engineering cost is low, and is practical, easy to utilize.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
A kind of building composite reinforcing structure as shown in Figure 1; comprise be arranged on the polylith steel plate 10 of waiting to reinforce building 9 surfaces and around and tensioning be arranged on the described principal rod net of waiting to reinforce around the building 95; wait to reinforce building 9 surfaces and steel plate 10 surfaces and be provided with interfacial agents layer 6; interfacial agents layer 6 surface are provided with high-performance polymer mortar bonding layer 7; the surface of high-performance polymer mortar bonding layer 7 is provided with high performance polymer cement slurry topping 8; principal rod net 5 by steel press strip 1 and be installed in steel plate 10 and steel press strip 1 in bolt 2 be fixed on the external surface of steel plate 10; between adjacent two steel plates, evenly be provided with cross bar 3; being provided with brace 4 between the adjacent crossbars, fixedlys connected with steel plate 10 and cross bar 3 in the two ends of brace 4.
Of the present utility modelly waiting to reinforce building 1 and can be concrete structure, can also be masonry structure, and described cross section of waiting to reinforce building 1 can also be rectangle or regular polygon etc. for circular.Principal rod net 5 can be the high strength steel strand net, can also be steel mesh reinforcement or gauze wire cloth.
The thickness of interfacial agents layer 6 of the present utility model is 1mm-2mm, and the thickness of high-performance polymer mortar bonding layer 7 is 15mm-25mm, and the thickness of high performance polymer cement slurry topping 8 is 1mm-2mm.High performance polymer cement slurry topping 8 is made of modified epoxy base polymer cement paste or modified acrylic ester copolymer cement paste.
Method with the utility model is reinforced building may further comprise the steps:
The steel plate of step 3, prefabricated band cross bar and brace, steel press strip and principal rod net: according to steel plate, steel plate Inter cross bar and brace and the steel press strip of reinforcing the drawing making suitable dimension, adopt high strength steel strand, reinforcing bar or steel wire establishment principal rod net and according to waiting that the Outside Dimensions of reinforcing building carries out cutting;
Needs according to construction reinforced structure function of use and environment for use; also optionally at high-performance polymer mortar bonding laminar surface spraying high performance polymer cement slurry; constitute high performance polymer cement slurry topping, wherein, repair materials described in the step 1 is epoxy mortar.The spraying of the layer of interfacial agents described in the step 7 is artificial brushing or mechanically spraying.28 days compressive strength rates of the mortar bonding of high-performance polymer described in step 7 layer are waited to reinforce the high grade of compressive strength of building and be not less than 25MPa, the spraying of described high-performance polymer mortar bonding layer is artificial brushing or mechanically spraying, spraying time-division three layers of spraying, the thickness of first floor is 8mm-10mm, the thickness of the second layer is 5mm-6mm, the 3rd layer thickness is 5mm-6mm, direct spraying one deck down during current one deck hand thixotroping shape, current one deck spraying one deck down again and again after initial set has then needed smear hacking and handle with wood.The spraying of described high performance polymer cement slurry topping 8 is artificial brushing or mechanically spraying.
The utility model is based on reinforcement High Performance Mortar and affixing steel plate reinforcement technology, with the two combination, take full advantage of advantage separately and avoided its shortcoming, by wait to reinforce the building surface affixing steel plate, at the fixing principal rod net and waiting to reinforce building and surface of steel plate spraying interfacial agents layer and high-performance polymer screed of surface of steel plate, can make former bearing capacity, ductility and ratio of rigidity of waiting to reinforce building use steel plate or use principal rod net and High Performance Mortar separately, all increase.In high performance polymer cement slurry topping and high-performance polymer mortar bonding layer are wrapped in steel plate, improve the durability of steel plate, exempted the preservative treatment in the affixing steel plate reinforcement, prolonged maintenance period, saved engineering cost.
Claims (6)
1. building composite reinforcing structure, it is characterized in that: comprise the polylith steel plate (10) that is arranged on building to be reinforced (9) surface and around and tensioning be arranged on building described to be reinforced (9) principal rod net (5) on every side, building to be reinforced (9) surface and steel plate (10) surface are provided with interfacial agents layer (6), interfacial agents layer (6) surface is provided with high-performance polymer mortar bonding layer (7), principal rod net (5) by steel press strip (1) and be installed in steel plate (10) and steel press strip (1) in bolt (2) be fixed on the external surface of steel plate (10), between adjacent two steel plates, evenly be provided with cross bar (3), being provided with brace (4) between the adjacent crossbars, fixedlys connected with steel plate (10) and cross bar (3) in the two ends of brace (4).
2. building composite reinforcing structure according to claim 1 is characterized in that: the surface of described high-performance polymer mortar bonding layer (7) is provided with high performance polymer cement slurry topping (8).
3. building composite reinforcing structure according to claim 1 and 2, it is characterized in that: described principal rod net (5) is high strength steel strand net, steel mesh reinforcement or gauze wire cloth.
4. building composite reinforcing structure according to claim 1 and 2, it is characterized in that: the thickness of described interfacial agents layer (6) is 1mm-2mm.
5. building composite reinforcing structure according to claim 1 and 2, it is characterized in that: the thickness of described high-performance polymer mortar bonding layer (7) is 15mm-25mm.
6. building composite reinforcing structure according to claim 1 and 2 is characterized in that: the thickness of described high performance polymer cement slurry topping (8) is 1mm-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320081619 CN203129623U (en) | 2013-02-03 | 2013-02-03 | Composite strengthening structure for building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320081619 CN203129623U (en) | 2013-02-03 | 2013-02-03 | Composite strengthening structure for building |
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| CN203129623U true CN203129623U (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320081619 Expired - Fee Related CN203129623U (en) | 2013-02-03 | 2013-02-03 | Composite strengthening structure for building |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612415A (en) * | 2015-01-31 | 2015-05-13 | 长安大学 | Building progressive collapse resisting reinforcing system and method with HPFL and steel plates combined |
| CN107060361A (en) * | 2017-02-17 | 2017-08-18 | 中国十七冶集团有限公司 | A kind of wall shock resistance structure reinforcing framework and its reinforcement means |
| CN111216232A (en) * | 2020-02-12 | 2020-06-02 | 浙江巨通管业有限公司 | High-quality prestressed steel cylinder concrete pipe and production process thereof |
| CN111852070A (en) * | 2020-08-03 | 2020-10-30 | 西安科技大学 | Supporting and reinforcing structure and method for irregular cave top of ancient cave |
| CN112144906A (en) * | 2020-09-22 | 2020-12-29 | 九州职业技术学院 | Method for reinforcing waste coal mine transfer station |
-
2013
- 2013-02-03 CN CN 201320081619 patent/CN203129623U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612415A (en) * | 2015-01-31 | 2015-05-13 | 长安大学 | Building progressive collapse resisting reinforcing system and method with HPFL and steel plates combined |
| CN107060361A (en) * | 2017-02-17 | 2017-08-18 | 中国十七冶集团有限公司 | A kind of wall shock resistance structure reinforcing framework and its reinforcement means |
| CN111216232A (en) * | 2020-02-12 | 2020-06-02 | 浙江巨通管业有限公司 | High-quality prestressed steel cylinder concrete pipe and production process thereof |
| CN111852070A (en) * | 2020-08-03 | 2020-10-30 | 西安科技大学 | Supporting and reinforcing structure and method for irregular cave top of ancient cave |
| CN112144906A (en) * | 2020-09-22 | 2020-12-29 | 九州职业技术学院 | Method for reinforcing waste coal mine transfer station |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20140203 |