CN205368937U - Reinforced structure of impaired concrete road surface panel - Google Patents

Abstract

The utility model provides a reinforcement structure for a damaged concrete pavement panel, which includes a planed concrete pavement panel, and a reinforcement groove is provided at the crack of the broken plate of the concrete pavement panel along the extending direction of the crack of the broken plate. On the two groove walls of the groove, a plurality of pairs of horizontal reinforcement holes are arranged opposite to each other. Horizontal reinforcements are fixed in the horizontal reinforcement holes, and the outer ends of the horizontal reinforcements facing each other are fixed together by overlapping the overlapping reinforcement. The steel fiber concrete overlay is poured and fixed on the concrete pavement panel, and the bottom of the steel fiber concrete overlay is filled with the reinforcement groove. In the solution of the utility model, the combination of horizontal steel bars and steel fiber concrete improves the cooperative performance of old and new cement concrete, increases the bearing capacity of the reinforced area of the concrete pavement panel, and prolongs the service life and maintenance cycle of the road.

Description

A reinforcement structure for damaged concrete pavement slabs

technical field

The utility model relates to the repair and reinforcement of damaged concrete pavement panels, in particular to the reinforcement structure of damaged concrete pavement panels.

Background technique

Cement concrete pavement refers to the pavement with cement concrete as the main material, referred to as concrete pavement, also known as rigid pavement, it is a high-grade pavement. In recent years, my country's economic construction has developed rapidly, and the road transportation industry has advanced by leaps and bounds. The cement concrete pavement has the advantages of high rigidity, high strength, durable use, and small daily maintenance workload. Therefore, some urban roads, industrial and mining roads, and airport runways have been built in large quantities. Concrete pavement, and some high-grade highways have also been built with cement concrete pavement. In my country's highways, urban roads, industrial and mining roads, and airport pavements, the most widely used is the ordinary concrete pavement poured on site. This type of concrete pavement is not configured except for joint areas and local areas (edges or corners). Steel bars, also known as plain concrete pavement.

Ordinary cement concrete pavement structure is easy to construct and low in cost. However, its strength is low. With the increase of vehicle traffic in recent years, the load capacity and driving speed continue to increase, coupled with the adverse effects of environmental effects on pavement building materials, the pavement will be damaged to varying degrees in a short period of time after construction.

Common traditional repair and reinforcement methods include: (1) cutting and planing at local cracks and re-pouring the same type of cement concrete material; (2) planing the entire board and re-paving or directly paving the same type of cement concrete material on the upper layer . However, the above method cannot fundamentally solve the problem of low tensile strength of ordinary cement concrete pavement (road) and large deformation of new cement concrete, which leads to cracking of the weak bonded surface with the original cement concrete, and cracking damage occurs again in a short period of time after repeated loading And other issues.

Therefore, it is urgent to seek a new repair and reinforcement method to solve the fundamental problems of ordinary cement concrete pavement, such as low strength and easy cracking after traditional repair and reinforcement methods, poor synergy between new and old cement concrete, short service life, and high long-term use costs. question.

In order to solve the above existing problems, people have been seeking an ideal technical solution.

Utility model content

The purpose of the utility model is to address the deficiencies of the prior art, thereby providing a reinforcement structure for damaged concrete pavement panels.

In order to achieve the above object, the technical solution adopted by the utility model is: a reinforcement structure for damaged concrete pavement panels, including a planed concrete pavement panel, the cracks of the concrete pavement panels are along the cracks of the broken panels. Reinforcement grooves are provided in the extension direction of the reinforcement groove, and a plurality of pairs of horizontal reinforcement holes are arranged on the two groove walls of the reinforcement grooves. The horizontal reinforcement holes are fixed in the horizontal reinforcement holes and the outer ends of the horizontal reinforcement The overlapping steel bars are overlapped and fixed together, and the concrete pavement panel is poured with a fixed steel fiber concrete overlay, and the bottom of the steel fiber concrete overlay fills up the reinforcement groove.

Preferably, the plurality of pairs of horizontal reinforcement holes arranged facing each other are evenly distributed along the extension direction of the reinforcement groove, and the distance between adjacent horizontal reinforcement holes is 3 to 5 times the diameter of the horizontal reinforcement.

Preferably, the horizontal reinforcement hole is located at the lower part of the groove wall and the distance from the bottom of the concrete pavement panel is 1/3 of the thickness of the concrete pavement panel.

Preferably, the horizontal steel bar is bonded and fixed in the corresponding horizontal bar-planting hole by building glue, the horizontal steel bar is a threaded steel bar, and the length of the horizontal steel bar protruding from the horizontal bar-planting hole is the width of the reinforcement groove 0.25 to 0.5 times of the overlapping steel bar and the outer end of each horizontal steel bar is greater than or equal to 3 times the diameter of the horizontal steel bar.

Preferably, each pair of said horizontal steel bars is overlapped and fixed with two said overlapping steel bars, and the two said overlapping steel bars are symmetrically distributed on said horizontal steel bars.

Compared with the prior art, the utility model has substantive characteristics and progress, specifically:

1. A reinforced structure for damaged concrete pavement panels. The horizontal steel bars bear most of the horizontal tensile stress originally borne by the concrete pavement panels, which improves the tensile capacity, shear capacity and anchorage of the concrete pavement panels on both sides of the reinforcement groove Performance, reducing the horizontal sliding of the concrete pavement panel, reducing the possibility of the concrete pavement panel being cracked.

2. Steel fiber concrete is poured in the reinforcement tank. The small shrinkage and deformation of steel fiber concrete ensures the bonding strength of the old and new cement concrete interfaces and reduces the generation of shrinkage cracks. At the same time, steel fibers have good tensile, flexural and The properties of shear resistance, crack resistance, shrinkage resistance, impact wear resistance, fatigue resistance and good toughness increase the stability and reliability of the cement concrete panel reinforcement area.

3. The combination of horizontal steel bars and steel fiber concrete improves the synergistic performance of old and new cement concrete, increases the integrity and stiffness of the reinforced structure of the damaged concrete pavement slab, not only increases the bearing capacity of the reinforced area of the concrete pavement slab, and extends The service life and maintenance cycle of the road are improved, and the long-term use cost is reduced.

It should be pointed out that the concrete pavement described in the utility model is an ordinary concrete pavement, also known as plain concrete pavement.

Description of drawings

Fig. 1 is a schematic diagram of cutting and slotting a crack in a damaged concrete pavement slab in an embodiment of the present invention.

Fig. 2 is a schematic diagram of the reinforcement structure of the damaged concrete pavement panel in the embodiment of the present invention.

detailed description

The technical solutions of the present invention will be further described in detail through specific implementation methods below.

A reinforcement structure for a damaged concrete pavement panel, as shown in Figures 1 and 2, includes a planed concrete pavement panel 1, and the cracks of the broken plate of the concrete pavement panel 1 are provided with reinforcement along the extension direction of the broken plate cracks 2 Groove 4, on the two groove walls of reinforcement groove 4, several pairs of horizontal reinforcement holes 5, 5' are arranged facing each other. The outer ends of the set horizontal steel bars 6, 6' are fixed together by lap joints of the steel bars 7, 7', and the pairs of horizontal planting bar holes 5, 5' arranged oppositely are evenly distributed along the extending direction of the reinforcement groove 4, And the distance between adjacent horizontal reinforcement holes is 3 to 5 times the diameter of the horizontal reinforcement, the horizontal reinforcement holes 5, 5' are located in the lower part of the tank wall and the distance from the bottom of the concrete pavement panel 1 is 1/3 of the thickness of the concrete pavement panel , the horizontal steel bars 6 and 6' are threaded steel bars, the length of the horizontal steel bars 6 and 6' protruding from the horizontal planting holes 5 and 5' is 0.25 to 0.5 times the width of the reinforcement groove, and the overlapping steel bars 7 and 7' are connected to each horizontal The overlapping length of the outer end of the steel bar is greater than or equal to 3 times the diameter of the horizontal steel bar, and each pair of horizontal steel bars 6, 6' is fixed with the two overlapping steel bars 7, 7', and the two overlapping steel bars 7, 7' The horizontal steel bars 6, 6' are symmetrically distributed, and the concrete pavement panel 1 is poured with a fixed steel fiber concrete overlay 8, and the bottom of the steel fiber concrete overlay 8 is filled with the reinforcement groove 4.

In this embodiment, a reinforced structure for damaged concrete pavement panels, the horizontal steel bars bear most of the horizontal tensile stress originally borne by the concrete pavement panels, improving the tensile capacity, shear capacity and The anchorage performance reduces the horizontal sliding of the concrete pavement panel and reduces the possibility of the concrete pavement panel being cracked; steel fiber concrete is poured in the reinforcement groove, and the small shrinkage and deformation of the steel fiber concrete itself ensures that the interface between the old and new cement concrete is stable. The bonding strength reduces the generation of shrinkage cracks. At the same time, steel fibers have good tensile, flexural, shear, cracking, shrinkage, impact and wear resistance, fatigue resistance and good toughness, which increases the strength of cement. The stability and reliability of the reinforced area of the concrete slab; the combination of horizontal steel bars and steel fiber concrete improves the synergistic performance of old and new cement concrete, increases the integrity and stiffness of the reinforced structure of the damaged concrete pavement slab, and not only increases the concrete pavement The load-bearing capacity of the panel reinforcement area, and prolong the service life and maintenance cycle of the road, and reduce the long-term use cost.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit it; although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should understand that: still The specific implementation of the utility model can be modified or some technical features can be equivalently replaced; without departing from the spirit of the technical solution of the utility model, all of them should be included in the scope of the technical solution claimed by the utility model.

Claims (5)

1. a reinforced structure of damaged concrete pavement panel, it is characterized in that: comprise the concrete pavement panel of surface planing, the broken plate crack place of described concrete pavement panel is provided with reinforcing groove along the extending direction of broken plate crack, so On the two groove walls of the above-mentioned reinforcement groove, a plurality of pairs of horizontal reinforcement holes are arranged facing each other, and horizontal reinforcements are fixed in the horizontal reinforcement holes, and the outer ends of the horizontal reinforcements facing each other are fixed together by overlapping the overlapping reinforcement. The concrete pavement panel is poured with a fixed steel fiber concrete overlay, and the bottom of the steel fiber concrete overlay is filled with the reinforcement groove. 2. The reinforcement structure of a damaged concrete pavement panel according to claim 1, characterized in that: the plurality of pairs of horizontal reinforcement holes arranged opposite to each other are evenly distributed along the extension direction of the reinforcement groove, and adjacent to each other The distance between the horizontal reinforcement holes is 3 to 5 times the diameter of the horizontal reinforcement. 3. The reinforcement structure of a damaged concrete pavement panel according to claim 2, characterized in that: the horizontal reinforcement hole is located at the bottom of the groove wall and the distance from the bottom of the concrete pavement panel is 100°C. 1/3 of the panel thickness. 4. The reinforcing structure of a damaged concrete pavement panel according to claim 3, characterized in that: said horizontal reinforcement is bonded and fixed in said corresponding horizontal reinforcement hole by building glue, and said horizontal reinforcement is Threaded reinforcement, the length of the horizontal reinforcement protruding from the horizontal reinforcement hole is 0.25 to 0.5 times the width of the reinforcement groove, and the overlapping length of the overlapping reinforcement and the outer end of each horizontal reinforcement is greater than or equal to the horizontal 3 times the diameter of the steel bar. 5. according to claim 1 or 2 or 3 or 4 described a kind of reinforcing structure of damaged concrete pavement panel, it is characterized in that: every pair of described horizontal steel bars is all lapped and fixed with two described overlapping steel bars, two The overlapping steel bars are symmetrically distributed on the horizontal steel bars.