A device for treating vehicle bump at bridgeheads in soft soil areas and its rapid treatment method

Abstract

The present invention discloses a device for treating vehicle bump at bridgeheads in soft soil areas and a rapid treatment method thereof, which includes prefabricated lightweight blocks installed on the original bottom soil layer, geotextiles located above the lightweight blocks, a strengthening layer located above the geotextiles, and prefabricated hard blocks located above the strengthening layer. A fixing device is provided between the lightweight blocks and the hard blocks. By setting prefabricated lightweight blocks and hard blocks on the original bottom soil layer, it is convenient and fast to repair bad road sections. At the same time, by setting a fixing device between the lightweight blocks and the hard blocks, the structure of the device is more stable and has a certain shock-absorbing effect, avoiding the phenomenon of vehicle bump at bridgeheads.

Description

Technical Field

[0001] The invention relates to the field of bridge head vehicle bounce, in particular to a device for bridge head vehicle bounce in soft soil areas and a rapid treatment method thereof. Background Art

[0002] Bridge jumping is a phenomenon in which vehicles jump when passing due to differential settlement or damage to expansion joints at the bridge head and expansion joints (bridge approach). The road surface has different degrees of settlement and fracture at the backfill of the abutment (the settlement value is generally 10 to 30 cm, and some even exceed 60 cm), causing vehicles to jump and impact when passing, thereby placing additional impact loads on the bridge culvert and the road surface, causing drivers and passengers to feel bumpy and uncomfortable, and even causing vehicles to slow down significantly. Severe cases can lead to traffic accidents (especially vehicle mechanical accidents). Therefore, the bridge jumping problem has become an important factor affecting the engineering quality and construction cost of high-grade highways. The bridge jumping problem has always been one of the difficult problems that have plagued municipal management engineering and technical personnel. Solving the bridge jumping problem is an important task for municipal facilities management departments.

[0003] The main causes of bridgehead jolting include uneven settlement, sudden changes in stiffness, and differences in vehicle speed and vibration resistance. In urban road conditions, this is primarily due to uneven settlement at the connection between the flexible road and the rigid structure, resulting in misalignment. Bridges, roadbeds, and pavement differ in their composition, stiffness, strength, and expansion / contraction properties, and stress concentrations are easily formed at the bridgehead connection. Under the influence of vehicle loads, structural deadweight, and natural factors, both the bridge and road settle simultaneously, but the amount of settlement differs significantly, with the road settling much more than the bridge, causing misalignment and leading to bridgehead jolting during driving.

[0004] In particular, the phenomenon of bridge jumping on soft soil is extremely common. Under the conditions of vehicle load and natural factors (such as rain, soil deformation, and ground settlement difference), the general treatment solution for soft soil is to dig out the original soil ore that causes bridge jumping on soft soil on the basis of the original road, and replace or add soil to the original bottom layer. The construction period is generally long, which seriously affects the passage of vehicles. At the same time, the bridge jumping phenomenon is higher in the location where the corresponding phenomenon occurs than in other places. Summary of the Invention

[0005] The main purpose of the present invention is to provide a device for bridge head jump in soft soil areas and a rapid treatment method thereof, aiming to solve the problems of long construction period and poor stability of bridge head jump in soft soil areas.

[0006] To achieve the above object, the present invention provides a device for preventing bump at bridgehead in soft soil areas, which includes prefabricated lightweight blocks installed in the original bottom soil layer, a geotextile located above the lightweight blocks, a strengthening layer located above the geotextile, and prefabricated hard blocks located above the strengthening layer. A fixing device is provided between the lightweight blocks and the hard blocks.

[0007] Further, the length of the lightweight block is 0.5 m - 1.5 m, the width is 0.5 m - 1 m, and the thickness is 0.1 m to 0.3 m.

[0008] Further, the length of the hard block is 0.5 m - 1.5 m, the width is 0.5 m - 1 m, and the thickness is 0.1 m to 0.2 m.

[0009] Further, the fixing device includes an L-shaped first through groove located in the hard block, a first channel penetrating through the strengthening layer and communicating with the bottom of the first through groove, a second channel located in the geotextile and communicating with the first channel, and a 7-shaped second through groove located in the lightweight block. The first through groove, the first channel, the second channel, and the second through groove are filled with colloid.

[0010] Further, the first through groove, the first channel, the second channel, and the second through groove are sleeved with soft steel wires.

[0011] Further, the strengthening layer is made of cement mortar and fine aggregate concrete.

[0012] Further, an asphalt concrete layer is provided above the hard block.

[0013] Further, a movable cushion plate is provided above the hard block. The cushion plate is fixedly connected to the asphalt concrete layer, and the size of the cushion plate is suitable for that of the hard block.

[0014] Further, a groove is provided at the top of the hard block. The groove is provided with spring columns. One end of each spring column abuts against the hard block, and the other end abuts against the cushion plate.

[0015] Meanwhile, the present invention also provides a rapid treatment method for preventing bump at bridgehead in soft soil areas, which includes the following steps: treating the old roadbed, excavating and replacing with prefabricated lightweight blocks to reduce the load of the roadbed layer; then laying a geotextile on the lightweight blocks, and constructing a leveling layer on the geotextile; paving precast concrete cover plates on the leveling layer. The concrete cover plates are made of high-strength concrete and are overlapped with staggered joints at both ends; finally, fastening with connecting bolts.

[0016] The technical solution of the present invention sets prefabricated lightweight blocks and hard blocks in the original bottom soil layer, which can conveniently and quickly repair bad road sections. At the same time, a fixing device is arranged between the lightweight blocks and the hard blocks, making the structure of the device more stable and having a certain shock-absorbing effect, avoiding the phenomenon of vehicle jumping at the bridgehead. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic plan view of the present invention;

[0018] Figure 2 It is an enlarged view of the first embodiment of part A;

[0019] Figure 3 It is an enlarged view of the second embodiment of part A.

[0020] In the present invention, 1 is the original bottom soil layer, 2 is the lightweight block, 21 is the second through groove, 3 is the geotextile, 31 is the second channel, 4 is the strengthening layer, 41 is the first channel, 5 is the hard block, 51 is the first through groove, 52 is the groove, 6 is the colloid, 7 is the backing plate, 71 is the spring column, and 8 is the asphalt concrete layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] It should be noted that if there are directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...) involved in the embodiments of the present invention, then the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0023] In addition, if there is a description involving "first" or "second" in the embodiments of the present invention, then the description of "first" or "second" is only for descriptive purposes and cannot be understood as indicating or implying its relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0024] The present invention provides a device for treating vehicle bump at bridgeheads in soft soil areas and a rapid treatment method therefor.

[0025] In an embodiment of the present invention, as Figures 1 to 3 shown, the device for treating vehicle bump at bridgeheads in soft soil areas includes a prefabricated lightweight block 2 installed on the original bottom soil layer 1, a geotextile 3 located above the lightweight block 2, a strengthening layer 4 located above the geotextile 3, and a prefabricated hard block 5 located above the strengthening layer 4. A fixing device is provided between the lightweight block 2 and the hard block 5. By setting the prefabricated lightweight block 2 and hard block 5 on the original bottom soil layer 1, it is convenient and fast to repair the defective section. At the same time, by setting a fixing device between the lightweight block 2 and the hard block 5, the structure of the device is more stable, and it also has a certain shock-absorbing effect, avoiding the phenomenon of vehicle bump at bridgeheads.

[0026] Specifically, the lightweight block 2 has a length of 0.5 m - 1.5 m, a width of 0.5 m - 1 m, and a thickness of 0.1 m to 0.3 m. More specifically, the hard block 5 has a length of 0.5 m - 1.5 m, a width of 0.5 m - 1 m, and a thickness of 0.1 m to 0.2 m. By prefabricating the lightweight block 2 and hard block 5 of the above sizes in the factory, they can be quickly installed and fixed during construction without waiting for the cement to cool. Moreover, the lightweight block 2 and hard block 5 of the above sizes are convenient for actual construction and are suitable for most soft soil areas with vehicle bump at bridgeheads.

[0027] In an embodiment of the present invention, the fixing device includes an L-shaped first through groove 51 in the hard block 5, a first channel 41 penetrating through the strengthening layer 4 and connected to the bottom of the first through groove 51, a second channel 31 in the geotextile 3 connected to the first channel 41, and a 7-shaped second through groove 21 in the lightweight block 2. The first through groove 51, the first channel 41, the second channel 31, and the second through groove 21 are filled with a colloid 6. The hard block 5, the strengthening layer 4, the geotextile 3, and the lightweight block 2 are connected by the colloid 6 filled in the first through groove 51, the first channel 41, the second channel 31, and the second through groove 21. At the same time, the colloid 6 is a non-vertical colloid 6, which has a tensile fixing effect, and the colloid 6 has a certain flexibility, can be quickly installed and fixed, and has high stability during later use.

[0028] More specifically, a soft steel wire is sleeved on the first through groove 51, the first channel 41, the second channel 31, and the second through groove 21. After setting the soft steel wire on the first through groove 51, the first channel 41, the second channel 31, and the second through groove 21 and then filling with the colloid 6, the fixing effect between the hard block 5 and the lightweight block 2 can be further improved.

[0029] In an embodiment of the present invention, the strengthening layer 4 is made of cement mortar and fine aggregate concrete.

[0030] In an embodiment of the present invention, an asphalt concrete layer 8 is provided above the hard block 5.

[0031] In another embodiment of the present invention, a movable cushion plate 7 is provided above the hard block 5. The cushion plate 7 is fixedly connected to the asphalt concrete layer 8, and the size of the cushion plate 7 is adapted to that of the hard block 5.

[0032] Specifically, a groove is provided at the top of the hard block 5, and a spring column 71 is provided in the groove. One end of the spring column 71 abuts against the hard block 5, and the other end abuts against the cushion plate 7. Through the arrangement of the spring column 71, the phenomenon of bump at the bridge head in soft soil areas is further improved.

[0033] A rapid treatment method for bump at the bridge head in soft soil areas according to the present invention includes the following steps: treating the old roadbed, excavating and replacing with precast lightweight blocks to reduce the load of the roadbed stratum; then laying a geotextile on the lightweight blocks, and constructing a leveling layer on the geotextile; paving precast concrete covers on the leveling layer. The concrete covers are made of high-strength concrete, and the two ends of the concrete covers are overlapped with staggered joints; finally, fastening with connecting bolts. This rapid treatment method has no curing time and can immediately resume traffic after rapid construction.

[0034] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the description and drawings of the present invention under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A device applied to the bump at bridgeheads in soft soil areas, characterized in that: It includes prefabricated lightweight blocks installed in the original bottom soil layer, a geotextile located above the lightweight blocks, a strengthening layer located above the geotextile, and prefabricated rigid blocks located above the strengthening layer. A fixing device is provided between the lightweight blocks and the rigid blocks. The length of the lightweight blocks is 0.5 meters to 1.5 meters, the width is 0.5 meters to 1 meter, and the thickness is 0.1 meter to 0.3 meters. The length of the rigid blocks is 0.5 meters to 1.5 meters, the width is 0.5 meters to 1 meter, and the thickness is 0.1 meter to 0.2 meters. The fixing device includes an L-shaped first through groove in the rigid block, a first channel penetrating through the strengthening layer and connected to the bottom of the first through groove, a second channel connected to the first channel in the geotextile, and a 7-shaped second through groove in the lightweight block. The first through groove, the first channel, the second channel, and the second through groove are filled with colloid, and a soft steel wire is sleeved on the first through groove, the first channel, the second channel, and the second through groove. The strengthening layer is made of cement mortar and fine aggregate concrete. An asphalt concrete layer is provided above the rigid block. A movable backing plate is provided above the rigid block. The backing plate is fixedly connected to the asphalt concrete layer. The backing plate is of the same size as the rigid block. A groove is provided at the top of the rigid block. A spring column is provided in the groove. One end of the spring column abuts against the rigid block, and the other end abuts against the backing plate.

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