CN1063508C - Construction of elastic joint of bridge connection gap with elastomer and broken pebbles filled in - Google Patents
Construction of elastic joint of bridge connection gap with elastomer and broken pebbles filled in Download PDFInfo
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- CN1063508C CN1063508C CN 94118370 CN94118370A CN1063508C CN 1063508 C CN1063508 C CN 1063508C CN 94118370 CN94118370 CN 94118370 CN 94118370 A CN94118370 A CN 94118370A CN 1063508 C CN1063508 C CN 1063508C
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- elastic body
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Abstract
The present invention relates to a construction method for a bridge joint telescopic body formed by filling broken pebbles into an elastoplastic body, which belongs to bridge construction. Rubber, plastic, asphalt, phenolic resin and fillers are proportionally kneaded by reinforced machinery at high temperature to form a homogeneous elastoplastic body, and the elastoplastic body is filled with the broken pebbles to be poured into a bridge joint telescopic body with elasticity and plasticity. The elastoplastic body is suitable for various expansion joints of which the expansion amount is below 50mm in highway bridges, specific bridge types and other building projects, etc. The elastoplastic body has the advantages of corrosion resistance, aging resistance, long service life, convenient, simple and quick construction, simple structure, low cost, wide applicable temperature range, no obvious seam of the bridge, etc., and half-amplitude construction can be carried out.
Description
The present invention relates to building of bridge and viaduct, specifically be a kind of be the joint of bridge extrusome and the job practices thereof of filling based on elastic body, with the rubble.
Bridge extension joint in the bridge total cost proportion seldom, but its requisite pith during to be bridge and viaduct etc. build, the consequence that it causes can make whole bridge scrap.In order to handle the shrinkage joint of bridge well, the stretching device that adopts in bridge design, the construction is of a great variety.Stay the shrinkage joint as present giving of domestic most employing, anchoring is provided with various formulas, board-like stretching device in seam.Because project organization, material selection are reasonable inadequately, when reality is used, the very easily damage of such device.Follow-on no anchoring, seamless stretching device, as Chinese invention patent application 91109276 " bridge with small expansion joint and construction technology ", with the material of main part of polymer (elastic body) modified bitumen for bonding and adaptation distortion, combine through special process and Rational structure with preferred sandstone mineral aggregate again, have advantages such as dilatation is big, modulus is low, elasticity is recovered by force, adhesive property is good.The non-plastic but the material of main part at this shrinkage joint--polymer (elastic body) modified bitumen is only flexible, when bridge forces this shrinkage joint to take place to stretch owing to the variations in temperature generation is flexible, promptly in the shrinkage joint, produce long-term horizontal tensile stress or compressive stress, the shrinkage joint is under the fatigue state, aging rapidly, be easy to equally damage.
The purpose of this invention is to provide a kind of not only flexible, but also the elastic body of plasticity arranged and be thereby that material of main part gives at bridge and stays the seam place to form the job practices that extrusome forms no seam bridge, with the application life of prolongation bridge with this elastic body.
For achieving the above object, the technical solution used in the present invention is:
Elastic body is mixed by multiple high molecular polymer and pitch, is main and auxiliary with filler with rubber, plastics, pitch wherein, and main composition is (in a % weight): rubber 3-5; Plastics 15-18; Pitch 70-75; Phenolic resins 2-2.5; Surplus is a filler.Wherein filler includes age resistor, carbonate etc.Manufacturing process is: each composition is at high temperature mediated with mechanical means is powerful in proportion, made each composition reach homogeneous phase, the slice cooling is stand-by.
With elastic body of the present invention is that main job practices of watering the bridge extrusome is: make earlier and give notch cleaning, the drying of staying, cavernous body is inserted in the beam-ends gap, elastic body being heated to 170-190 ℃ making it to dissolve, is that the rubble of 1-2cm is made popular to 100-150 ℃ with size, carries out in the following order again:
1, at notch bottom surface and superpolymer adhesive of side brushing, airing;
2, to pour into notch bottom surface 4-6mm earlier thick for the elastic body part that will account for the fusion of the total consumption 2/9-4/9 of elastic body, with scraper plate elastic body is coated with tankful mouth both sides simultaneously, puts into transverse joint plate, compacting, fixing, pours into the elastic body of last fusion again;
3, the rubble of making popular is spread in the groove half, flattened, tamping to groove depth;
4, the elastic body that will account for the fusion of the total consumption 1/3 of elastic body pours into notch;
5, the rubble of making popular is spread into notch, pressing, tamping make concordant with the road surface;
6, the surface pours into the elastic body of last fusion, and wipes off to make with strickle and slightly exceed the road surface, to remedy the influence of natural subsidence;
7, one deck microlith or coarse sand are spread in the surface.
After finishing construction,, can be open to traffic in about about 1 hour according to the temperature difference.
If hot weather construction should make extrusome slightly exceed the road surface; If winter construction should make extrusome a little less than the road surface.Further strengthen when needs between the extrusome of pontic and pouring company on time, also can be in the notch bottom surface and the side give and bury anchor studs.
In this job practices, the consumption of rubble equals the volume of notch, and the consumption of elastic body accounts for the 0.5-0.6 of notch volume, and the consumption of each operation rubble and elastic body does not need very accurate, is paved with notch and is as the criterion with all slits of elastic body filling rubble, extrusome.
Because elastic body of the present invention is mainly mixed by rubber, plastics, pitch, thereby the present invention integrates performances such as rubber, plastics, pitch.At high temperature (140-190 ℃) this elastic body is molten condition, shows the flowability the same with pitch, and pouring can be fixing with satisfied evenly contraction with rubble after advancing this elastic body in rubble, and enough ability sustained loads are arranged.(25-60 ℃) this elastic body is the solid state with elasticity and plasticity at normal temperatures, when dither (as impact, vibrate, when bearing transient load), demonstrate high resiliency; And under the effect of the slow power of low frequency (creeping during as variations in temperature under flexible flexible, the nature that causes this elastic body of bridge floor etc.), then demonstrate plasticity completely, when extrusome tension or pressurized are flexible, temporarily be in elastic stage, have horizontal tensile stress or compressive stress, but because elastic body has plasticity, this horizontal pull, pressure fade away, so this extrusome is in relaxed state for a long time, so ageing-resistant, not fragile.Thereby the present invention has following advantage:
1, easy construction, quick is suffered from one's own actions level, waters and can pass through in back about 1 hour; But half range construction when old bridge is changed, half range uses;
2, acidproof, alkaline-resisting, water-tight is corrosion-resistant, ageing-resistant, and is not fragile, long service life;
3, elastic body can absorb distortion and the vibration that all directions are come, and has real three-dimensional, and its high damping properties helps the bridge vibration damping;
4, simple in structure, save man-hour, material takes, cost is low;
5, bridge does not have obvious seam;
6, Applicable temperature scope wide (25-60 ℃).
Below by embodiment content of the present invention is described in detail.Preparation elastic body embodiment 1-3 by each composition of % weight elastic body is:
The production technology of preparation elastic body embodiment 1-3 is all identical: with each composition in proportion at high temperature with mechanical means powerfully mediate, homogeneous phase, get final product not only flexiblely, but also have and have the elastic body that is solid-state, anti-water, resistance to chemical attack under flowability, the normal temperature under plasticity, the high temperature.This elastic body satisfies following performance indications:
Proportion 1-1.1
Ductility (25 ℃ time) 100%
Fragility point-45 ℃
250 ℃ of flash-points
Flowing temperature 160-190 ℃
Keep flexible temperature range-25-60 ℃
With elastic body is the job practices embodiment one of major ingredient pouring joint of bridge extrusome: establish width of rebate 50cm, and dark 8cm, long 500cm, temperature is the annual mean medium temperature during construction.Notch volume: 50cm * 8cm * 500cm=200000cm
3, the rubble consumption of 1-2cm is 200000cm
3, elastic body consumption 200000cm
3* 0.6=120000cm
3, construct by following step:
1, give stay, clean, dry notch, if transform when the notch size is not enough in the old bridge joint-cutting in accordance with regulations;
2, superpolymer adhesive of notch bottom surface and side brushing; Cool 10-30 minute, be as the criterion with dried;
3, cavernous body is inserted in the beam-ends gap;
4, elastic body is cut into strip, be heated to 170-190 ℃ and make fusing, the elastic body of fusion is poured into notch, and to make bottom thickness be 5mm, with scraper plate elastic body is coated with tankful mouth both sides simultaneously, put into transverse joint plate, the centering compacting is fixed with 4 cun nails every 300mm, and the common 20mm of elastic body that pours into fusion is thick;
5, the rubble of 1-2cm is made popular to 100-150 ℃ of shop and gone into notch, wipe tamping off to groove depth 1/2;
6, the elastic body that pours into fusion makes and exceeds macadam 20mm;
7, the shop rubble going into to make popular is wipeed tamping off to notch, makes concordant with the road surface;
8, pour into the elastic body of fusion, slightly exceed bridge floor, strickle is wipeed off;
9, one deck coarse sand is spread on the surface, can be open to traffic about 1 hour.
Job practices embodiment two (imbed anchor studs reinforce embodiment): give in the 1st step of above-mentioned job practices embodiment one and to increase by a procedure after staying notch: the 40mm eminence is buried a M16 bolt along the notch side underground every 300mm in distance notch bottom surface; Apart from side 50mm place, bury a M16 bolt underground every 300mm, the equal exposing surface 50mm in bolt end in the notch bottom.All the other each steps are fully identical with job practices embodiment one.
Bridge extrusome of the present invention is applicable to that stroke is below 50mm, use at the shrinkage joint that the design beam-ends is spaced apart below the 40mm during by the annual mean medium temperature, can be used for the transverse joint in bridge on highway, overpass bridge, viaduct, ordinary highway bridge, pedestrian bridge, water conservancy aqueduct, special bridge type and the transformation of old bridge, suitable seam, oblique seam, but be open to traffic at the construction of heavy traffic highway section half range, half range, be not afraid of vibration; Also can be used for waterproof, vibrationproof and the shrinkage joint construction of other construction work.
Claims (4)
1. an elastic body is characterized in that Main Ingredients and Appearance is by weight percentage: rubber 3-5, plastics 15-18, pitch 70-75, phenolic resins 2-2.5, surplus are filler.
2. a manufacturing process of making the described a kind of elastic body of claim 1 is characterized in that each composition is in proportion at high temperature with the powerful kneading of mechanical means.
3. job practices of using the described a kind of elastic body pouring of claim 1 joint of bridge extrusome, comprise give stay, clean, dry notch, in the beam-ends gap, insert cavernous body, it is characterized in that elastic body is heated to 170-190 ℃ makes it fusing, the rubble of 1-2CM is made to 100-150 ℃ popular processing step pouring in the following order:
(1) at superpolymer adhesive of notch bottom surface and side brushing, airing;
(2) to pour into notch bottom surface 4-6MM earlier thick for the elastic body part that will account for the fusion of total consumption 2/9-4/9, with rubbing board elastic body is coated with tankful mouth two sides simultaneously, puts into the transverse joint plate compacting and fix, and the elastic body with last fusion pours in the notch again;
(3) rubble of making popular spread in the notch to groove depth half, flatten tamping;
(4) pour into elastic body fusion, that account for the total consumption 1/3 of elastic body;
(5) rubble of making popular is paved with notch, draws together flat, tamping;
(6) pour into the elastic body of last fusion, draw together flat with drawing together flat device;
(7) one deck microlith or coarse sand are spread in the surface.
4. job practices according to claim 3 is characterized in that burying anchor studs giving giving on the notch side stayed, the bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118370 CN1063508C (en) | 1994-11-28 | 1994-11-28 | Construction of elastic joint of bridge connection gap with elastomer and broken pebbles filled in |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94118370 CN1063508C (en) | 1994-11-28 | 1994-11-28 | Construction of elastic joint of bridge connection gap with elastomer and broken pebbles filled in |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1123860A CN1123860A (en) | 1996-06-05 |
| CN1063508C true CN1063508C (en) | 2001-03-21 |
Family
ID=5038797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94118370 Expired - Fee Related CN1063508C (en) | 1994-11-28 | 1994-11-28 | Construction of elastic joint of bridge connection gap with elastomer and broken pebbles filled in |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1063508C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985846A (en) * | 2010-11-14 | 2011-03-16 | 西安达盛隔震技术有限公司 | Elastoplastic device for expansion joints in buildings and road engineering |
| CN103088752A (en) * | 2013-02-05 | 2013-05-08 | 江西省城乡规划设计研究院 | Construction method of bridge seamless type expansion joint |
| CN103556569B (en) * | 2013-11-22 | 2016-01-20 | 张志成 | A kind of bridge composite seamless shrinkage joint |
| CN105002820B (en) * | 2015-07-10 | 2016-08-17 | 河南万方交通工程有限公司 | A kind of bridge installing automatic cleaning type expansion gap device |
-
1994
- 1994-11-28 CN CN 94118370 patent/CN1063508C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1123860A (en) | 1996-06-05 |
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