CN104631311A - Bridge expansion joint structure and construction method - Google Patents
Bridge expansion joint structure and construction method Download PDFInfo
- Publication number
- CN104631311A CN104631311A CN201510036824.9A CN201510036824A CN104631311A CN 104631311 A CN104631311 A CN 104631311A CN 201510036824 A CN201510036824 A CN 201510036824A CN 104631311 A CN104631311 A CN 104631311A
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- China
- Prior art keywords
- sealant
- shrinkage joint
- joint
- basic unit
- fast hardening
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
- E01D19/067—Flat continuous joints cast in situ
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a bridge expansion joint structure and a construction method thereof. The bridge expansion joint structure comprises an expansion joint base material and an expansion joint sealant material. The expansion joint base material comprises fast setting concrete base layers and polyurethane elastic concrete pavements, wherein the fast setting concrete base layers are poured on the two sides of a reserved notch of each expansion joint, the fracture surfaces of the fast setting concrete base layers on the two sides comprise concave structures, the polyurethane elastic concrete pavements are poured on the fast setting concrete base layers, and the fracture surfaces of the polyurethane elastic concrete pavements on the two sides comprise convex structures and are connected with the fast setting concrete base layers on the two sides in a matched mode respectively. The expansion joint sealant material comprises a sealant bottom die arranged between the expansion joints, and a sealant injected into the sealant bottom die between the expansion joints to seal the expansion joints.
Description
Technical field
The present invention relates to road, bridge construction technical field, particularly a kind of bridge expanssion joint structure and construction method thereof.
Background technology
At present, in China's speedway, town road, the various types of type steel expansion joint device of bridge expanssion joint extensive use, construction technology is comparatively ripe, but due to himself defect and operating environment impact, easily there is the diseases such as shaped steel fracture, concrete breakage, waterstop season cracking in type steel expansion joint, not only causes the waste of resource, bring very big inconvenience simultaneously to repairing construction.
The reason that shrinkage joint disease occurs mainly contain following some: 1) stroke is reserved not enough; 2) stiffness by itself is inadequate; 3) notch concrete construction quality is watered after poor; 4) too early open to traffic, concrete strength does not reach requirement.
Therefore, for various disease and the inducement thereof of existing type steel expansion joint, thoroughly reforming this root of structural form, be that to realize shrinkage joint durable for a long time, stop the unique channel that common fault occurs repeatedly, is also the bottleneck place of shrinkage joint development.
Summary of the invention
The present invention is directed to prior art above shortcomings, provide a kind of bridge expanssion joint structure.The present invention is achieved through the following technical solutions:
A bridge expanssion joint structure, comprises shrinkage joint substrate material and shrinkage joint sealant material;
Shrinkage joint substrate material comprises:
Fast hardening concrete basic unit, builds the both sides of the reserved notch in a shrinkage joint, and the section of the fast hardening concrete basic unit of both sides comprises " recessed " shape structure;
Elastic polyurethane concrete pavement, is cast in fast hardening concrete basic unit, and the section of the elastic polyurethane concrete pavement of both sides comprises " convex " shape structure, is connected respectively with the fast hardening concrete basic unit of both sides;
Shrinkage joint sealant material comprises:
Sealant bed die, is arranged between shrinkage joint;
Sealant, on the sealant bed die at shrinkage joint belonging to injecting, sealing shrinkage joint.
Preferably, elastic polyurethane concrete pavement is bi-component polyurethane ester material, solidifies formation by mix aggregate.
Preferably, the apical side height of sealant is lower than the apical side height of elastic polyurethane concrete pavement.
Preferably, the degree of depth of reserved notch is 15-20cm, and wide is 15cm.
Preferably, the degree of depth of " recessed " shape structure of fast hardening concrete basic unit is 8cm, and wide is 10cm, and sagging recess is 3 × 3cm.
Preferably, the injection degree of depth of sealant is 1/2nd of the width at shrinkage joint.
Preferably, sealant bed die is foam rods.
The present invention is directed to prior art above shortcomings, separately provide the construction method of a kind of bridge expanssion joint structure.The present invention is achieved through the following technical solutions:
A construction method for bridge expanssion joint structure, comprises step:
S1, dust out, chip are carried out to shrinkage joint, and side form cystosepiment is installed;
S2, smear interfacial agents at the reserved notch inner surface at shrinkage joint, then build fast hardening concrete basic unit, make the section of fast hardening concrete basic unit have " recessed " shape structure by pressing mold;
S3, after the initial set of fast hardening concrete basic unit, take out pressing mold, treat that anhydrous point of fast hardening concrete substrate surface is excessive, at the external coating silane coupling agent of fast hardening concrete basic unit, then build elastic polyurethane concrete pavement;
S4, after the initial set of elastic polyurethane concrete pavement, remove side form cystosepiment, in shrinkage joint, fill in sealant bed die, then inject sealant to shrinkage joint;
S5, after elastic polyurethane concrete pavement has built a scheduled time, complete the manufacture of expansion joint structure.
Preferably, elastic polyurethane concrete pavement is bi-component polyurethane ester material, by mix cobble, solidifies rear formation.
Preferably, the injection degree of depth of sealant is 1/2nd of the width at shrinkage joint, and the apical side height of sealant is lower than the apical side height of elastic polyurethane concrete pavement.
Expansion joint structure provided by the invention, existing type steel expansion joint device can be replaced by the combination of fast hardening concrete subbase, polyurethane concrete surface layer and shrinkage joint sealant, reached by form of structure combination and eradicate shaped steel and to stretch disease inducement, solve prior art Shaped Steel shrinkage joint and produce the short common fault of disease-reparation cycle period, and can be applicable to newly building bridge engineering and bridge maintenance engineering.
Accompanying drawing explanation
Shown in Fig. 1 is the structural representation that bridge expanssion joint of the present invention constructs;
Shown in Fig. 2 to Fig. 5 is the construction process figure that bridge expanssion joint of the present invention constructs.
Detailed description of the invention
Below with reference to accompanying drawing of the present invention; clear, complete description and discussion are carried out to the technical scheme in the embodiment of the present invention; obviously; as described herein is only a part of example of the present invention; it is not whole examples; based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to protection scope of the present invention.
For the ease of the understanding to the embodiment of the present invention, be further explained for specific embodiment below in conjunction with accompanying drawing, and each embodiment does not form the restriction to the embodiment of the present invention.
As shown in Figure 1, bridge expanssion joint structure provided by the invention, comprises shrinkage joint substrate material and shrinkage joint sealant material, replaces existing type steel expansion joint.
Shrinkage joint substrate material comprises fast hardening concrete basic unit 1 and elastic polyurethane concrete pavement 2.Fast hardening concrete basic unit 1 is cast in the both sides of the reserved notch at shrinkage joint, and the section of the fast hardening concrete basic unit 1 of both sides has " recessed " shape structure; Elastic polyurethane concrete pavement 2 is cast in fast hardening concrete basic unit 1, and the section of the elastic polyurethane concrete pavement 2 of both sides has " convex " shape structure, is connected respectively with the fast hardening concrete basic unit 1 of both sides.Being increased and the build-in force of fast hardening concrete basic unit 1 and frictional force by convex configuration form, carrying out anchoring without the need to arranging reinforcing bar.
Fast hardening concrete basic unit 1 has that rigidity is large, the early characteristic such as epistasis, easily mix, initial setting time is short, strength enhancing is fast, it is applicable to by rigidity the load bearing surface layer transmission, early the characteristic of epistasis and easy mix is beneficial to rapid construction, makes this type of shrinkage joint be applicable to replacing, the repairing construction at existing disease shrinkage joint.Elastic polyurethane concrete pavement 2 relies on good elasticity to absorb the impact force of vehicle, and stress form is better than the rigid collision of concrete pavement, within the scope of its bearing capacity, increases substantially shrinkage joint application life.
Shrinkage joint sealant material comprises sealant bed die 4 and sealant 3.Sealant bed die 4 is arranged between shrinkage joint, sealant 3 can inject shrinkage joint on this basis, thus shrinkage joint is sealed, sealant 3 adopts polyurethane material to form, there is great rate elongation, caking property and water proofing property, to replace the watertight rubber band of existing type steel expansion joint, road surface current are stoped to immerse in shrinkage joint completely.
As shown in Figures 2 to 5, the manufacturing step of bridge expanssion joint structure of the present invention is as follows:
(1) reserved notch dimensional depth 15-20cm, the width 15cm(at shrinkage joint or existing shrinkage joint disease notch concrete chisel removal), then dust out, chip, installs side form cystosepiment (being convenient to dismounting);
(2) smear interfacial agents at reserved notch inner surface, then build fast hardening concrete subbase 1, and by pressing mold, make fast hardening concrete subbase 1 section in " recessed " shape, " recessed " shape mouth dimensional depth 7cm, width 10cm, sink recess 3 × 3cm;
(3) fast hardening concrete subbase 1 after 2 hours initial set (initial setting time determines according to actual conditions, just illustrate at this), take out pressing mold, treat that anhydrous point of surface is excessive, at fast hardening concrete subbase 1 external coating silane coupling agent for increasing adhesion stress between elastic polyurethane concrete pavement 2 and fast hardening concrete subbase 1, silane coupling agent refers to touch slightly dry after-pouring elastic polyurethane concrete pavement 2;
(4) after elastic polyurethane concrete pavement 2 has been prepared according to two component, mix appropriate aggregate (particle diameter can be adopted to be not more than the hair side cobble of 1cm), stir after-pouring on fast hardening concrete subbase 1, by mix cobble, elastic polyurethane concrete pavement 2 modulus of elasticity solidifying rear formation is little, have better elasticity, can effectively absorb wheel impacts energy, not fragile;
(5) side form cystosepiment is removed after elastic polyurethane concrete pavement 2 initial set, in shrinkage joint, fill in sealant bed die 4(uses foam rods as sealant bed die in the present embodiment, but the present invention is not as limit), sealant 3 is injected in shrinkage joint, injecting the degree of depth is 1/2 of expansion joint width, and sealant 3 end face is a little less than the end face of elastic polyurethane concrete pavement 2;
(6) after elastic polyurethane concrete pavement 2 has built 1 hour, open to traffic (this replaces maintenance construction for type steel expansion joint) is got final product.
Compared to prior art, advantage of the present invention is:
1, constructing operation is simple, rapid, namely can be applicable to newly building bridge engineering, also can be used for substituting and maintenance of existing disease shrinkage joint, can reach the effect of short time open to traffic in the Renewal process of existing disease shrinkage joint;
2, anti-fatigue performance, endurance quality, corrosion resistance are good, normal service life 10 years or shock resistance 2,000,000 times;
3, sealant has the rate elongation of 100%, is applicable to all width-telescopic seams of below 8cm.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. a bridge expanssion joint structure, is characterized in that, comprise shrinkage joint substrate material and shrinkage joint sealant material;
Described shrinkage joint substrate material comprises:
Fast hardening concrete basic unit, builds the both sides of the reserved notch in a shrinkage joint, and the section of the described fast hardening concrete basic unit of both sides comprises " recessed " shape structure;
Elastic polyurethane concrete pavement, is cast in described fast hardening concrete basic unit, and the section of the described elastic polyurethane concrete pavement of both sides comprises " convex " shape structure, is connected respectively with the described fast hardening concrete basic unit of both sides;
Described shrinkage joint sealant material comprises:
Sealant bed die, is arranged between described shrinkage joint;
Sealant, on the described sealant bed die at shrinkage joint belonging to injecting, seals described shrinkage joint.
2. bridge expanssion joint structure according to claim 1, it is characterized in that, described elastic polyurethane concrete pavement is bi-component polyurethane ester material, solidifies formation by mix aggregate.
3. bridge expanssion joint according to claim 1 structure, is characterized in that, the apical side height of described sealant is lower than the apical side height of described elastic polyurethane concrete pavement.
4. bridge expanssion joint structure according to claim 1, it is characterized in that, the degree of depth of described reserved notch is 15-20cm, and wide is 15cm.
5. bridge expanssion joint structure according to claim 1, it is characterized in that, the degree of depth of " recessed " shape structure of described fast hardening concrete basic unit is 8cm, and wide is 10cm, and sagging recess is 3 × 3cm.
6. bridge expanssion joint structure according to claim 1, it is characterized in that, the injection degree of depth of described sealant is 1/2nd of the width at described shrinkage joint.
7. bridge expanssion joint structure according to claim 1, it is characterized in that, described sealant bed die is foam rods.
8. a construction method for bridge expanssion joint structure, is characterized in that, comprise step:
S1, dust out, chip are carried out to shrinkage joint, and side form cystosepiment is installed;
S2, smear interfacial agents at the reserved notch inner surface at shrinkage joint, then build fast hardening concrete basic unit, make the section of fast hardening concrete basic unit have " recessed " shape structure by pressing mold;
S3, after the initial set of fast hardening concrete basic unit, take out pressing mold, treat that anhydrous point of fast hardening concrete substrate surface is excessive, at the external coating silane coupling agent of fast hardening concrete basic unit, then build elastic polyurethane concrete pavement;
S4, after the initial set of elastic polyurethane concrete pavement, remove side form cystosepiment, in shrinkage joint, fill in sealant bed die, then inject sealant to shrinkage joint;
S5, after elastic polyurethane concrete pavement has built a scheduled time, complete the manufacture of expansion joint structure.
9. the construction method of bridge expanssion joint structure according to claim 8, it is characterized in that, described elastic polyurethane concrete pavement is bi-component polyurethane ester material, by mix cobble, solidifies rear formation.
10. the construction method of bridge expanssion joint structure according to claim 8, it is characterized in that, the injection degree of depth of described sealant is 1/2nd of the width at described shrinkage joint, and the apical side height of described sealant is lower than the apical side height of described elastic polyurethane concrete pavement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036824.9A CN104631311B (en) | 2015-01-26 | 2015-01-26 | A kind of bridge expanssion joint construction and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036824.9A CN104631311B (en) | 2015-01-26 | 2015-01-26 | A kind of bridge expanssion joint construction and construction method |
Publications (2)
| Publication Number | Publication Date |
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| CN104631311A true CN104631311A (en) | 2015-05-20 |
| CN104631311B CN104631311B (en) | 2017-08-01 |
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| CN201510036824.9A Expired - Fee Related CN104631311B (en) | 2015-01-26 | 2015-01-26 | A kind of bridge expanssion joint construction and construction method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105463986A (en) * | 2015-12-01 | 2016-04-06 | 中铁四局集团第三建设有限公司 | Construction method of bridge expansion joint |
| CN105541180A (en) * | 2015-10-14 | 2016-05-04 | 慧融高科（武汉）新型材料有限公司 | Epoxy mortar for bridge expansion joints and construction method thereof |
| CN107059945A (en) * | 2017-06-10 | 2017-08-18 | 上海君领实业有限公司 | A kind of waterproof seal rubbery expansion joint leak-proof leak-stopping construction method |
| CN108252208A (en) * | 2018-03-07 | 2018-07-06 | 佛山科学技术学院 | A kind of bridge deformation seam |
| CN110438884A (en) * | 2019-07-12 | 2019-11-12 | 唐峰 | A kind of novel bridge abutment structure |
| CN110552286A (en) * | 2019-09-26 | 2019-12-10 | 谷丹 | Bridge expansion joint structure and preparation method thereof |
| CN113215974A (en) * | 2021-05-28 | 2021-08-06 | 中交路桥建设有限公司 | Construction method for bridge expansion joint in severe cold area |
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| CN201686930U (en) * | 2009-12-23 | 2010-12-29 | 中国铁道科学研究院铁道建筑研究所 | Elastomer expansion and contraction device for railway concrete bridge |
| CN103669202A (en) * | 2013-07-10 | 2014-03-26 | 孟献春 | Road and bridge expansion joint structure |
| CN203684167U (en) * | 2013-12-24 | 2014-07-02 | 河南省水利勘测设计研究有限公司 | Concrete joint waterstop device |
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Patent Citations (5)
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| CA2252332A1 (en) * | 1998-01-29 | 1999-07-29 | Silicone Specialties, Inc. | Expansion joint system |
| CN201686930U (en) * | 2009-12-23 | 2010-12-29 | 中国铁道科学研究院铁道建筑研究所 | Elastomer expansion and contraction device for railway concrete bridge |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105541180A (en) * | 2015-10-14 | 2016-05-04 | 慧融高科（武汉）新型材料有限公司 | Epoxy mortar for bridge expansion joints and construction method thereof |
| CN105463986A (en) * | 2015-12-01 | 2016-04-06 | 中铁四局集团第三建设有限公司 | Construction method of bridge expansion joint |
| CN105463986B (en) * | 2015-12-01 | 2017-01-25 | 中铁四局集团第三建设有限公司 | Construction method of bridge expansion joint |
| CN107059945A (en) * | 2017-06-10 | 2017-08-18 | 上海君领实业有限公司 | A kind of waterproof seal rubbery expansion joint leak-proof leak-stopping construction method |
| CN108252208A (en) * | 2018-03-07 | 2018-07-06 | 佛山科学技术学院 | A kind of bridge deformation seam |
| CN110438884A (en) * | 2019-07-12 | 2019-11-12 | 唐峰 | A kind of novel bridge abutment structure |
| CN110552286A (en) * | 2019-09-26 | 2019-12-10 | 谷丹 | Bridge expansion joint structure and preparation method thereof |
| CN113215974A (en) * | 2021-05-28 | 2021-08-06 | 中交路桥建设有限公司 | Construction method for bridge expansion joint in severe cold area |
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| Publication number | Publication date |
|---|---|
| CN104631311B (en) | 2017-08-01 |
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