CN201835228U - Bridge expansion joint structure - Google Patents
Bridge expansion joint structure Download PDFInfo
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- CN201835228U CN201835228U CN201020277657XU CN201020277657U CN201835228U CN 201835228 U CN201835228 U CN 201835228U CN 201020277657X U CN201020277657X U CN 201020277657XU CN 201020277657 U CN201020277657 U CN 201020277657U CN 201835228 U CN201835228 U CN 201835228U
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Abstract
The utility discloses a bridge expansion joint structure, which comprises a concrete layer, a section steel, a pre-embedded steel bar and a filling layer. The bridge expansion joint structure is characterized in that the concrete layer mainly comprises an elastic concrete layer and an epoxy resin concrete layer, wherein the elastic concrete layer is arranged above the epoxy resin concrete layer, and the epoxy resin concrete layer is arranged above an adjacent slab or above the adjacent slab and an abutment cap back wall. The bridge expansion joint structure makes full use of rapid initial strength and elasticity of epoxy resin concrete, thereby being rapid and high efficiency and saving cost; rapid solidification can be realized and strength of the bridge expansion joint structure is stronger than that of common cement concrete; by aids of good cohesiveness of binder, construction can be finished in a short time and the strength of the bridge expansion joint structure is stronger than that of common cement concrete, steel fiber concrete, rapid cement concrete and TST; the cement concrete, the elastic concrete, the section steel and the pre-embedded steel bar can be bound tightly, construction speed is fast, cost is low and efficiency is high.
Description
Technical field
The utility model relates to a kind of bridge construction, especially a kind of bridge expansion joint structure.
Background technology
Cause destruction to bridge construction for expanding with heat and contract with cold of preventing that variations in temperature from causing, satisfy the telescopic displacement demand of beam body, bridge floor, bridge expanssion joint is widely used in the different types of rridges structure.Existing bridge expanssion joint mainly comprises the bridge expanssion joint that adjacent beam slab constitutes, and the bridge expanssion joint that constitutes by beam slab and platform cap parados, the bridge expanssion joint that adjacent beam slab constitutes is usually located at strides the position in the bridge, and is usually located at bridge and the road surface end span position that joins by the bridge expanssion joint that beam slab and platform cap parados constitute.
The concrete at existing shrinkage joint is mainly steel fibrous concrete, ordinary concrete (as the C50 concrete), quick concrete and TST obturator, through the above mode of occupation of several concrete in engineering always, all fail to reach the quality time limit of design and actual instructions for use, some in addition just need reprocess every 1～2 year, and cause the quality dissatisfaction at shrinkage joint, the main cause that the later stage repair rate is bigger is the unreasonable of the structure of bridge expanssion joint and concrete material, existing steel fibrous concrete, ordinary concrete, though concrete and TST can reach basic filling intensity fast, but exist defective separately: the own adhesion stress of steel fibrous concrete and ordinary concrete is poor, with beam slab, platform cap parados, pre-buried muscle, bonding effect between shaped steel is relatively poor, in order to reach the corresponding mechanics effect, to beam slab, the surface finish of platform cap parados, the pre-buried effect of pre-buried muscle, pre-buried muscle and shaped steel to be connected arrangement requirement high, this has higher requirement to the quality control of when construction, objectively also the construction period will be prolonged, and, because poor adhesion, make that degree of being connected firmly also reduces between pre-buried muscle and shaped steel, steel fibrous concrete and ordinary concrete curing time are longer in addition, need 28 days usually; Early age strength of concrete is higher than ordinary concrete fast, but more crisp, impact resistance is relatively poor, and has the not enough problem of adhesion stress too, and application life is especially short; TST shrinkage joint intensity is lower, and stroke is less, the life-span is also shorter.
And when the bridge expanssion joint design and construction, usually have following situation: itself is with regard to defectiveness when 1, designing, too big as beam slab and beam slab (or beam slab and platform cap parados) embedded bar spacing, it is reasonable that size positions is owed, the insufficient height of some embedded bar, the pre-buried muscle of the pre-face of beam slab is subjected to the position influence of beam slab end socket concrete, pre-buried muscle does not reach pre-buried effect at all, moreover the reinforcing bar pad distribute spacing on the shaped steel is too big, cause shaped steel and concrete tie point very little, occur shaped steel and flexible concrete break-off easily; 2, unit in charge of construction does not draw attention, think that the shrinkage joint is not the significant points of bridge, unlike pile foundation and beam slab, in case there is problem can cause great safe mass accident, the quality details is not controlled during construction, causes the welding of shaped steel and pre-buried muscle not enough, and the position of pad is unjustified, have a strong impact on the effect of welding, stress-bearing capability reduces greatly; 3, bridge expanssion joint is last subitem of bridge engineering, often when the duration is urgent, construction finishing back, shrinkage joint curing time is inadequately with regard to open to traffic, and the quality that rolls of process vehicle is badly damaged, and the short problem of this curing time also becomes the subject matter that has a strong impact on quality when maintenance.
In addition in design, when construction, to the extendable room place of beam slab and beam slab (or beam slab and platform cap parados) leaving more space, spillage is serious during disturbing concrete, has influenced stroke.
In order to obtain comparatively desirable repairing effect, people begin to adopt elastic concrete as the shrinkage joint restoring material, elastic concrete can overcome the defective that above-mentioned material and structure are brought, but because the elastic concrete cost is higher, and bridge expanssion joint thickness is darker, and is general all at 12～30cm, if all build with elastic concrete, then cost is difficult to accept, and does not effectively utilize the great advantage of elastic concrete, also is a kind of waste.
For a long time, people thirst for a kind of intensity height, construction technology is simple, curing time is short, construction cost is low bridge expansion joint structure always.
Summary of the invention
The utility model is a kind of intensity height that provides, the bridge expansion joint structure that construction technology is simple, curing time is short, construction cost is low in order to solve above-mentioned technical deficiency.
In order to achieve the above object, the bridge expansion joint structure that the utility model is designed, it comprises layer of concrete, shaped steel, pre-buried muscle and packed layer, it is characterized in that described layer of concrete mainly comprises elastic concrete layer and epoxy resin concrete layer, the elastic concrete layer is positioned at epoxy resin concrete layer top, the epoxy resin concrete layer is arranged on the top of adjacent beam slab, the top of perhaps adjacent beam slab and platform cap parados.
The elastic concrete layer can provide better elastic modification and impact resistance, abrasion resistance, be positioned at and can emphasis bring into play it and stand wheel pressure and anti abrasive ability, and the epoxy resin concrete layer of below has the strong advantage of adhesion stress, can strengthen the bonding force between concrete and pre-buried muscle, thereby can reach the good mechanical transmission effect, can effectively overcome problems such as few, the pre-buried weak effect of point of contact, the pad distribute spacing is big, not prison welding is solid; Epoxy resin concrete has intensity height, the short advantage of curing time simultaneously, can effectively reduce curing time, simplifies construction technology.Such structure has not only satisfied the requirement of bridge floor, has also satisfied the mechanics requirement of depths, shrinkage joint, given full play to elastic concrete and epoxy resin concrete advantage separately, and cost is lower.
In order to bond effectively between each layer, preferred scheme is between epoxy resin concrete layer and elastic concrete layer, and all be provided with adhesive layer on the subsurface of epoxy resin concrete layer, thereby make between epoxy resin concrete layer and the elastic concrete layer and epoxy resin concrete layer and beam slab or platform cap parados between constuction joint can not form interlayer, reduce the quality influence that causes because of constuction joint that construction successively brings.Through repetition test repeatedly, preferred scheme is that described adhesive layer is a WABO BONDING AGENT cementing agent.
The thickness of described epoxy resin concrete layer is greater than 3cm, and the upper surface of this epoxy resin concrete layer is 5cm～10cm apart from bridge floor.Can adjust according to the bridge load grade, urban road and new construction are the 5-7CM spacing, and traffic route and maintenance works are 8-10CM.
As preferably, be provided with the dowel that is connected them between pre-buried muscle and the shaped steel.Preferred scheme be the exposed portions serve of described pre-buried muscle for keeping a foothold and a cross bar constitutes the shaped as frame structure that Open Side Down by two, all pre-buried muscle are arranged in parallel in the side of the shaped steel of correspondence, and pre-buried muscle is vertical with shaped steel; Described dowel comprises diagonal bar and corrugated first horizontal bar, and the trough point of first horizontal bar is connected on the shaped steel, and its wave crest point is connected on the cross bar, and the two ends of described diagonal bar link to each other bottom the near-end of described trough point and pre-buried muscle is kept a foothold respectively.Like this, not only shaped steel and pre-buried muscle are connected with each other, formed the stress frame structure of a solid, trigonometric expression especially, thereby the external loads of all directions can be dispersed to whole stress frame by the power transmission, thereby can bear the external loads of different directions in the actual use, be difficult for taking place deformation.Further, two adjacent wave crest points are connected on two adjacent pre-buried muscle on described first horizontal bar, and its trough point is positioned on the center line of two adjacent pre-buried muscle, can make stressed more balance.Further, also comprise corrugated second horizontal bar, described second horizontal bar is arranged in a crossed manner with first horizontal bar and link to each other, and the trough point of second horizontal bar also all is connected on the shaped steel simultaneously.
Through repetition test repeatedly, preferred scheme is that described elastic concrete layer is a WABO CRETE II elastic concrete.
Wherein WABO BONDING AGENT cementing agent and WABO CRETE II elastic concrete can be buied from U.S. WABO company.
The beneficial effect of the resulting bridge expansion joint structure of the utility model is: give full play to the quick early strength and the toughness of epoxy resin concrete, the purpose of reach quick, efficient, saving cost; Can also surpass portland cement concrete intensity by rapid solidification; Good adhesion by cementing agent, can finish at short notice to construct and reach above portland cement concrete and steel fibrous concrete, the intensity of cement concrete and TST fast, and equal energy secure bond between cement concrete, elastic concrete, shaped steel, pre-buried muscle, speed of application is fast, cost is low, efficient is high.Only need the traffic a few hours in the interim closure construction zone during construction, social influence is little; Long service life, application life be ordinary concrete structure shrinkage joint 5-10 doubly, as be applied to new construction, can the reduction of erection time, and ensure the quality of products.Especially adopt the scheme of WABO BONDING AGENT as cementing agent, can bring into play the adhesion stress of WABO BONDING AGENT cementing agent, make constuction joint can not form interlayer, adopt the scheme of WABOCRETE II elastic concrete, can effectively bring into play its elasticity modification ability, impact resistance and abrasion resistance.The resulting bridge expansion joint structure of the utility model can be used for new construction, also can be used for repairing.
Description of drawings:
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of embodiment 2;
Fig. 3 is the structural representation of embodiment 3;
Fig. 4 is the structural representation of embodiment 4;
Fig. 5 is the shaped steel of embodiment 5 and the syndeton schematic diagram of pre-buried muscle;
Fig. 6 is the sectional view that the A-A ' among Fig. 5 locates;
Fig. 7 is the structural representation of sinusoidal waveform first horizontal bar of embodiment 5;
Fig. 8 is the structural representation of oblique triangular waveform first horizontal bar of embodiment 5;
Fig. 9 is the shaped steel of embodiment 6 and the syndeton schematic diagram of pre-buried muscle;
Figure 10 is the sectional view that the B-B ' among Fig. 9 locates;
Figure 11 is the structural representation of first, second horizontal bar of sinusoidal waveform of embodiment 6.
Among the figure: shaped steel 1, pre-buried muscle 2, keep a foothold 3, cross bar 4, trough point 5, first horizontal bar 6, diagonal bar 7, elastic concrete layer 8, epoxy resin concrete layer 9, wave crest point 10, second horizontal bar 11, layer of concrete 12, beam slab 13, platform cap parados 14, packed layer 15, dowel 16, adhesive layer 17, solder joint 18.
The specific embodiment:
Below in conjunction with embodiment the utility model is further specified.
As shown in Figure 1, the bridge expansion joint structure that present embodiment is described, be arranged in bridge and stride the position, it comprises layer of concrete 12, shaped steel 1, pre-buried muscle 2 and packed layer 15, pre-buried muscle 2 is embedded on the adjacent beam slab 13, exposed portions serve is cast in the layer of concrete, in the gap of packed layer 15 between adjacent beam slab 13, packed layer 15 is a cystosepiment, described layer of concrete mainly comprises elastic concrete layer 8 and epoxy resin concrete layer 9, elastic concrete layer 8 is positioned at epoxy resin concrete layer 9 top, and epoxy resin concrete layer 9 is arranged on the top of adjacent beam slab 13.
Certainly, packed layer 15 can also be for architectural other packing materials commonly used, as sponge, sponge plate.Epoxy resin concrete layer 9 can adopt architectural epoxy resin concrete commonly used, as application number is 20091010329.2 disclosed modified epoxy resin concretes, certainly also can adopt on the market other epoxy resin concrete, the epoxy resin concrete of producing as Sanmu Group Corp, Jiangsu.
In order to obtain best result of use, the elastic concrete that present embodiment adopted is a WABO CRETE II elastic concrete.
As shown in Figure 2, be provided with the dowel 16 that is connected them between the bridge expansion joint structure that present embodiment is described, pre-buried as different from Example 1 muscle 2 and shaped steel 1.Dowel 16 also adopts reinforcing bar, and pre-buried muscle 2 is welded with shaped steel 1, gains in strength.
As shown in Figure 3, the bridge expansion joint structure that present embodiment is described, be positioned at bridge and joint, road surface, it comprises layer of concrete 12, shaped steel 1, pre-buried muscle 2 and packed layer 15, described layer of concrete mainly comprises elastic concrete layer 8 and epoxy resin concrete layer 9, elastic concrete layer 8 is positioned at epoxy resin concrete layer 9 top, and epoxy resin concrete layer 9 is arranged on the top of adjacent beam slab 13 and platform cap parados 14.
In order to bond effectively between each layer, between epoxy resin concrete layer 9 and elastic concrete layer 8, and all be provided with adhesive layer 17 on the subsurface of epoxy resin concrete layer 9, thereby make between epoxy resin concrete layer 9 and the elastic concrete layer 8 and epoxy resin concrete layer 9 and beam slab 13 and platform cap parados 14 between constuction joint can not form interlayer, reduce the quality influence that causes because of constuction joint that construction successively brings.In order to obtain the best bond effect, the cementing agent that present embodiment adopted is a WABO BONDING AGENT cementing agent, and elastic concrete is a WABO CRETE II elastic concrete.
As shown in Figure 4, the bridge expansion joint structure that present embodiment is described, it comprises packed layer 15 in adjacent beam slab 13, shaped steel 1, adjacent beam slab 13 gaps and the pre-buried muscle 2 on the beam slab 13, pre-buried muscle 2 is connected with shaped steel 1 by dowel 16, above described beam slab 13, be provided with epoxy resin concrete layer 9, above this epoxy resin concrete layer 9, be provided with elastic concrete layer 8.All be provided with adhesive layer 17 between described beam slab 13 and the epoxy resin concrete layer 9 and between epoxy resin concrete layer 9 and the elastic concrete layer 8, thereby make constuction joint can not form interlayer, the quality influence that the constuction joint that reduces successively to bring because of constructing causes.
Described adhesive layer 17 can adopt the cementing agent of architectural various routines, as epoxy adhesive.In order to obtain the best bond effect, the cementing agent that present embodiment adopted is a WABO BONDING AGENT cementing agent, and elastic concrete is a WABO CRETE II elastic concrete.
The thickness of described epoxy resin concrete layer 9 is greater than 3cm, and the upper surface of this epoxy resin concrete layer 9 is 5cm～10cm apart from bridge floor.Because the upper surface of epoxy resin concrete layer 9 and the distance of bridge floor have directly determined the consumption of the elastic concrete that cost is higher, therefore can carry out different designs according to different bridge load grades, urban road and new construction are 5cm～7cm, traffic route and maintenance works are 8cm～10cm, and such design can be satisfied the user demand of different roads.
The bridge expansion joint structure that present embodiment is described is being adjusted accordingly design, the construction weak link that existed in the past, and utilizes the advantage of WABO CRETE II elastic concrete and WABO BONDING AGENT cementing agent to form the new construction technology of a cover.Can finish at short notice to construct and reach above portland cement concrete and steel fibrous concrete, the intensity of cement concrete and TST fast.Can bring into play the adhesion stress of WABO BONDING AGENT cementing agent, make constuction joint can not form interlayer, utilize the elasticity modification of WABO CRETE II elastic concrete and impact resistance, abrasion resistance.Give full play to the quick early strength and the toughness of epoxy resin concrete, reach quick, efficient, save cost; Quality, life-span surpass other same type of material.
The bridge expanssion joint various aspects of performance that pure elastic concrete is built is better, but cost is too high, being used for repairing and new construction all is difficult to accept, and the bridge expansion joint structure that present embodiment is described, combine elastic concrete and epoxy resin concrete advantage separately, their performance has been brought into play in maximization, has reduced the elastic concrete consumption, performance can compare favourably with the bridge expanssion joint that pure elastic concrete is built on the other hand, and cost but reduces greatly.
Construction technology comprises the steps: when being used to rush to repair
1, determines maintenance range, the track of maintenance sealed temporarily that the cutting fluting cuts former bridge expanssion joint concrete and cuts off the shaped steel 1 of modification.
2, with cutter hair machine former concrete base aspect is cut a hole hair, use wire brush and pneumatic pick cleaning foundation trench and rebar surface iron rust, dirt again.
3, bar planting.
4, welded and installed shaped steel 1.
5, cystosepiment is clogged in the stroke space between beam slab 13 and the beam slab 13.
6, brushing BONDING AGENT cementing agent, the brushing thickness of cementing agent will be controlled at surface wettability is advisable.
7, preparation epoxy resin concrete and cast are poured into from end face (bridge floor, road surface) 5cm～10cm.
8, maintenance is 1 hour.
9, brushing WABO BONDING AGENI cementing agent.
10, preparation WABO CRETE II elastic concrete is built in foundation trench.
11, maintenance open to traffic after 2 hours.
Above-mentioned construction technology as can be known, the bridge expansion joint structure construction period that present embodiment is described can greatly reduce than existing construction technology.
As shown in Figure 5, the bridge expansion joint structure that present embodiment is described, the exposed portions serve of described pre-buried muscle 2 is for to constitute the shaped as frame structure that Open Side Down by two 3 and cross bars 4 of keeping a foothold, all pre-buried muscle 2 are arranged in parallel the side at the shaped steel 1 of correspondence, and pre-buried muscle 2 is vertical with shaped steel 1, also comprise diagonal bar 7 and corrugated first horizontal bar 6 as different from Example 4, the trough point 5 of first horizontal bar 6 is connected on the shaped steel 1, its wave crest point 10 is connected on the cross bar 4, and the two ends of described diagonal bar 7 link to each other with the described trough point 5 and the near-end of pre-buried muscle 23 bottoms of keeping a foothold respectively.Two adjacent wave crest points 10 are connected on two adjacent pre-buried muscle 2 on described first horizontal bar 6, and its trough point 5 is positioned on the center line of two adjacent pre-buried muscle 2, and first horizontal bar 6 is positive triangular waveform.
Described first horizontal bar 6 also can be sinusoidal waveform (as shown in Figure 7), or oblique triangular wave (as shown in Figure 8).
Said structure not only is connected with each other shaped steel and pre-buried muscle, pre-buried muscle and pre-buried muscle, formed the stress frame structure of a solid, trigonometric expression especially, thereby the external loads of all directions can be dispersed to whole stress frame by the power transmission, thereby can bear the external loads of different directions in the actual use, be difficult for taking place deformation.
As shown in Figure 5, the bridge expansion joint structure that present embodiment is described, also comprise corrugated second horizontal bar 11 as different from Example 5, described second horizontal bar 11 is arranged in a crossed manner with first horizontal bar 6 and link to each other, and the trough point 5 of second horizontal bar 11 also all is connected on the shaped steel 1 simultaneously.Described second horizontal bar 11 is identical with first horizontal bar, 6 shapes, can be positive triangular waveform, also can be sinusoidal waveform.
Claims (10)
1. bridge expansion joint structure, it comprises layer of concrete, shaped steel, pre-buried muscle and packed layer, it is characterized in that described layer of concrete mainly comprises elastic concrete layer and epoxy resin concrete layer, the elastic concrete layer is positioned at epoxy resin concrete layer top, the epoxy resin concrete layer is arranged on the top of adjacent beam slab, the top of perhaps adjacent beam slab and platform cap parados.
2. bridge expansion joint structure according to claim 1 is characterized in that between epoxy resin concrete layer and elastic concrete layer, and all is provided with adhesive layer on the subsurface of epoxy resin concrete layer.
3. bridge expansion joint structure according to claim 2 is characterized in that described adhesive layer is a WABO BONDINGAGENT cementing agent.
4. bridge expansion joint structure according to claim 3, the thickness that it is characterized in that described epoxy resin concrete layer are greater than 3cm, and the upper surface of this epoxy resin concrete layer is 5cm～10cm apart from bridge floor.
5. according to claim 1 or 2 or 3 or 4 described bridge expansion joint structures, it is characterized in that being provided with the dowel that is connected them between pre-buried muscle and the shaped steel.
6. bridge expansion joint structure according to claim 5, the exposed portions serve that it is characterized in that described pre-buried muscle is for keeping a foothold and a cross bar constitutes the shaped as frame structure that Open Side Down by two, all pre-buried muscle are arranged in parallel in the side of the shaped steel of correspondence, and pre-buried muscle is vertical with shaped steel; Described dowel comprises diagonal bar and corrugated first horizontal bar, and the trough point of first horizontal bar is connected on the shaped steel, and its wave crest point is connected on the cross bar, and the two ends of described diagonal bar link to each other bottom the near-end of described trough point and pre-buried muscle is kept a foothold respectively.
7. bridge expansion joint structure according to claim 6 is characterized in that two adjacent on described first horizontal bar wave crest points are connected on two adjacent pre-buried muscle, and its trough point is positioned on the center line of two adjacent pre-buried muscle.
8. bridge expansion joint structure according to claim 7 is characterized in that also comprising corrugated second horizontal bar, and described second horizontal bar is arranged in a crossed manner with first horizontal bar and link to each other, and the trough point of second horizontal bar also all is connected on the shaped steel simultaneously.
9. according to claim 1 or 2 or 3 or 4 described bridge expansion joint structures, it is characterized in that described elastic concrete layer is a WABO CRETE II elastic concrete.
10. bridge expansion joint structure according to claim 6 is characterized in that described elastic concrete layer is a WABOCRETE II elastic concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020277657XU CN201835228U (en) | 2010-07-30 | 2010-07-30 | Bridge expansion joint structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020277657XU CN201835228U (en) | 2010-07-30 | 2010-07-30 | Bridge expansion joint structure |
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| Publication Number | Publication Date |
|---|---|
| CN201835228U true CN201835228U (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020277657XU Expired - Fee Related CN201835228U (en) | 2010-07-30 | 2010-07-30 | Bridge expansion joint structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594199A (en) * | 2014-12-03 | 2015-05-06 | 沈阳市政集团有限公司 | Construction method for reinforced concrete bridge framing longitudinal joint longitudinal connection |
| CN106638289A (en) * | 2016-10-26 | 2017-05-10 | 上海市政工程设计研究总院（集团）有限公司 | Steel bridge deck expansion joint concrete paving structure and construction method thereof |
-
2010
- 2010-07-30 CN CN201020277657XU patent/CN201835228U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594199A (en) * | 2014-12-03 | 2015-05-06 | 沈阳市政集团有限公司 | Construction method for reinforced concrete bridge framing longitudinal joint longitudinal connection |
| CN104594199B (en) * | 2014-12-03 | 2016-07-06 | 沈阳市政集团有限公司 | A kind of Reinforced Concrete Bridge longitudinally connected construction method of framing longitudinal joint |
| CN106638289A (en) * | 2016-10-26 | 2017-05-10 | 上海市政工程设计研究总院（集团）有限公司 | Steel bridge deck expansion joint concrete paving structure and construction method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20140730 |
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| EXPY | Termination of patent right or utility model |