阅读说明：本技术 大面积混凝土地面伸缩缝结构及施工方法 (Large-area concrete ground expansion joint structure and construction method ) 是由 王福海 胡玉刚 薄振东 王金华 田文刚 于 2019-11-19 设计创作，主要内容包括：本发明涉及伸缩缝结构,特别涉及大面积混凝土地面伸缩缝结构及施工方法,包括两侧的混凝土地层,两侧的混凝土地层之间设置有伸缩缝,所述伸缩缝内设置有互相平行的第一挡板和第二挡板,第一挡板和第二挡板分别贴合两侧的混凝土地层,在混凝土地层凝固之后,在第一挡板和第二挡板之间填充有填充物。设置第一挡板和第二挡板后,利用第一挡板和第二挡板作为模板,成型混凝土地层,在混凝土地层之间由于第一挡板和第二挡板的设置而存在间隙,在混凝土地层凝固收缩的过程中,有一定的收缩余量,从而降低混凝土路面出现裂缝的可能性,而在第一挡板和第二挡板之间填充填充物之后,路面也会比较平整。(The invention relates to an expansion joint structure, in particular to a large-area concrete ground expansion joint structure and a construction method thereof. After setting up first baffle and second baffle, utilize first baffle and second baffle as the template, the shaping concrete ground, because the setting of first baffle and second baffle exists the clearance between the concrete ground, at the in-process that the concrete ground solidifies the shrink, has certain shrink allowance to reduce the possibility that concrete road surface appears the crack, and after the filler was filled between first baffle and second baffle, the road surface also can be more level and more smooth.)

1. Large tracts of land concrete ground expansion joint structure, including concrete stratum (1) of both sides, be provided with expansion joint (2) between the concrete stratum (1) of both sides, its characterized in that, be provided with first baffle (3) and second baffle (4) that are parallel to each other in expansion joint (2), concrete stratum (1) of both sides are laminated respectively in first baffle (3) and second baffle (4), after concrete stratum (1) solidifies, it has filler (7) to fill between first baffle (3) and second baffle (4).

2. The large area concrete floor expansion joint structure of claim 1, wherein the bottom of the first baffle plate (3) and the second baffle plate (4) is fixedly provided with a support plate (5).

3. The large-area concrete floor expansion joint structure of claim 2, wherein the support plates (5) below the first baffle plate (3) and the second baffle plate (4) are movably matched with each other, and the moving direction is vertical to the first baffle plate (3).

4. The large-area concrete ground expansion joint structure of claim 3, wherein the first baffle plate (3) and the second baffle plate (4) are integrally provided with a reinforcement part (6) at one side close to the concrete formation (1).

5. The large area concrete floor expansion joint structure of claim 1, wherein the filler (7) is a sealant.

6. A construction method of an expansion joint structure is characterized by comprising the following steps:

s1, marking, and determining the position of the expansion joint (2);

s2, placing a first baffle (3) and a second baffle (4) at the positions of the lines to ensure that the first baffle (3) and the second baffle (4) are parallel to each other;

s3, pouring concrete to the outer sides of the first baffle plate (3) and the second baffle plate (4) to form a concrete stratum (1);

s4, filling filler (7) between the first baffle plate (3) and the second baffle plate (4) after the concrete stratum (1) is solidified.

7. The construction method of an expansion joint structure according to claim 6, wherein in step S2, a support plate (5) is fixedly arranged at the lower part of the first baffle (3) and the second baffle (4), and when the first baffle (3) and the second baffle (4) are placed, the support plate (5) is ensured to be attached to the ground.

8. The construction method for an expansion joint structure according to claim 7, wherein the supporting plates (5) of the first and second shutters (3, 4) are disposed in a movable engagement in a direction perpendicular to the first shutter (3), and the supporting plates (5) of the first and second shutters (3, 4) are moved close to each other to the limit position in step S2.

Technical Field

The invention relates to an expansion joint structure, in particular to a large-area concrete ground expansion joint structure and a construction method thereof.

Background

The expansion joint is a structural joint which is arranged for preventing a building member from generating cracks or being damaged due to climate and temperature changes, a large-area concrete surface is divided into a plurality of independent areas by using construction joints, concrete in each area is independently contracted in the process of solidification, and after the concrete in each area separated by the expansion joint is solidified, the expansion joint is poured. The post-cast strip is one of the typical large expansion joint structures.

For large concrete ground, because the thickness of the concrete poured on the road surface is small, integral pouring is often adopted, and a joint cutting machine is used for cutting joints on the concrete road surface within 8-12 hours after the concrete is poured, the cut joints are contraction joints, so that the positions and the directions of the contraction joints of the concrete road surface are induced and controlled, and the possibility of cracking of the concrete road surface is reduced. But the defects are that joint seams on the concrete pavement can not be subjected to joint filling operation after the construction is finished, so that the pavement has an uneven phenomenon, and a bumpy feeling can be generated in the driving process.

Disclosure of Invention

The invention aims to provide a large-area concrete ground expansion joint structure and a construction method, which improve the flatness of a road surface under the condition of ensuring that no crack occurs on the concrete road surface.

The invention aims to be realized by the following technical scheme:

large tracts of land concrete ground expansion joint structure, including the concrete stratum of both sides, be provided with the expansion joint between the concrete stratum of both sides, be provided with the first baffle and the second baffle that are parallel to each other in the expansion joint, the concrete stratum of both sides is laminated respectively to first baffle and second baffle, and after concrete stratum solidifies, it has the filler to fill between first baffle and second baffle.

Through adopting above-mentioned technical scheme, after setting up first baffle and second baffle, utilize first baffle and second baffle as the template, the shaping concrete ground, there is the clearance because the setting of first baffle and second baffle between the concrete ground, at the in-process that the concrete ground solidifies the shrink, has certain shrink allowance to reduce the possibility that concrete road surface crack appears, and after the filler was filled between first baffle and second baffle, the road surface also can be more level and more smooth.

The invention is further configured to: the bottom of the first baffle and the bottom of the second baffle are fixedly provided with supporting plates.

Through adopting above-mentioned technical scheme, the backup pad can promote first baffle and second baffle and place stability subaerial, reduces the first baffle and the second baffle possibility of taking place to remove when concreting.

The invention is further configured to: the supporting plates below the first baffle plate and the second baffle plate are in movable fit with each other, and the moving direction is perpendicular to the first baffle plate.

Through adopting above-mentioned technical scheme, before concreting, first baffle and second baffle are active coordination each other for atress each other between the two is convenient for guarantee the interval between first baffle and the second baffle, and at the in-process of concrete stratum shrink, can also keep away from each other between first baffle and the second baffle, with the shrinkage that provides the concrete shrinkage, prevention concrete stratum fracture.

The invention is further configured to: and a force increasing part is integrally arranged on one side of the first baffle and one side of the second baffle, which are close to the concrete stratum.

Through adopting above-mentioned technical scheme, can promote the intensity that combines between concrete stratum and first baffle and the second baffle to at the in-process that concrete stratum contracts, can drive first baffle or second baffle very reliably and remove, reduce the possibility of first baffle and second baffle and concrete stratum looks mutual separation.

The invention is further configured to: the filler is sealant.

Through adopting above-mentioned technical scheme, sealed glue can be complete with the space filling between first baffle and the second baffle, promotes the roughness on road surface to sealed glue has better elasticity, can produce when shrink or inflation because of temperature variation in the concrete formation, and sealed glue can provide the produced change volume of concrete stratum dimensional change.

The invention aims to be realized by the following technical scheme:

a construction method of an expansion joint structure comprises the following steps:

s1, marking, and determining the position of the expansion joint;

s2, placing a first baffle and a second baffle at the positions of the lines to ensure that the first baffle and the second baffle are parallel to each other;

s3, pouring concrete to the outer sides of the first baffle plate and the second baffle plate, and forming a concrete stratum;

and S4, filling filler between the first baffle and the second baffle after the concrete ground layer is solidified.

Through adopting above-mentioned technical scheme, rely on the interval effect of first baffle and second baffle to form the expansion joint, solidify the in-process of shrink in the concrete formation, the position relation between first baffle and the second baffle can change, supplements the shrinkage of concrete formation to reduce the concrete formation and produce cracked possibility, and treat after the concrete formation solidifies, the planarization on ground can be guaranteed to the filler between first baffle and the second baffle.

The invention is further configured to: in step S2, a support plate is fixedly disposed at the lower portion of the first baffle and the second baffle, and the support plate is ensured to be attached to the ground when the first baffle and the second baffle are placed.

Through adopting above-mentioned technical scheme, after setting up the backup pad, can promote first baffle and second baffle and place stability subaerial, reduce the possibility that first baffle and second baffle take place to remove when concreting.

The invention is further configured to: the support plates of the first barrier and the second barrier are disposed in a movable engagement in a direction perpendicular to the first barrier, and the support plates of the first barrier and the second barrier are moved close to each other to the limit position in step S2.

Through adopting above-mentioned technical scheme, before concreting, be close to extremely limit position with the backup pad of first baffle and second baffle each other after, the concrete in first baffle and the second baffle outside can continuously extrude first baffle and second baffle to make the stability that first baffle and second baffle were placed, be difficult for producing more and warp or remove.

In summary, the present invention has the following technical effects:

1. the expansion joint is formed by arranging the first baffle and the second baffle, and fillers are filled in the first baffle and the second baffle after the concrete floor is poured and solidified, so that the flatness of the pavement is improved under the condition that no crack is generated on the concrete pavement;

2. the supporting plate is arranged below the first baffle and the second baffle, so that the effect of improving the position stability of the first baffle and the second baffle is achieved;

3. the supporting plates below the first baffle and the second baffle are movably matched, so that the stability of the first baffle and the second baffle during pouring is improved;

4. the reinforcing part is arranged on the outer sides of the first baffle and the second baffle, so that the effect of improving the connection strength of the concrete stratum and the first baffle and the second baffle is achieved, and the concrete stratum is not easy to fall off.

Drawings

Fig. 1 is a schematic sectional view of an expansion joint according to the present invention.

In the figure, 1, a concrete stratum; 2. an expansion joint; 3. a first baffle plate; 4. a second baffle; 5. a support plate; 6. a force increasing part; 7. and (4) filling materials.

Detailed Description