CN111441209A

CN111441209A - Device applied to bridge head vehicle jumping in soft soil area and rapid treatment method thereof

Info

Publication number: CN111441209A
Application number: CN202010392262.2A
Authority: CN
Inventors: 朱汉华; 陈立平; 应国刚
Original assignee: Ningbo Landa Engineering Technology Co ltd
Current assignee: Ningbo Landa Engineering Technology Co ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2020-07-24

Abstract

The invention discloses a device applied to bridgehead vehicle jumping in a soft soil area and a rapid treatment method thereof. The light block and the hard block which are made in advance are arranged on the soil layer of the original bottom, so that the bad road section can be repaired conveniently and quickly, and meanwhile, the fixing device is arranged between the light block and the hard block, so that the device is more stable in structure and also has a certain damping effect, and the phenomenon of bumping at the bridge head is avoided.

Description

Device applied to bridge head vehicle jumping in soft soil area and rapid treatment method thereof

Technical Field

The invention relates to the field of bridge head vehicle jumping, in particular to a device applied to bridge head vehicle jumping in a soft soil area and a rapid treatment method thereof.

Background

The bump at the bridge head is caused by the phenomenon that the vehicle jumps when passing because of the steps on the longitudinal slope of the road surface caused by differential settlement or damage of the expansion joints (approach of the bridge head) at the bridge head and the expansion joints of the road. The road surface is subjected to settlement fracture (settlement value is generally 10-30 cm, some is even more than 60cm) in different degrees at the back filling position of the platform, so that the vehicle jumps and impacts when passing through the road surface, additional impact load is caused to bridges and culverts and the road surface, drivers and passengers feel uncomfortable, even the vehicle is greatly decelerated, and traffic accidents (particularly mechanical accidents of the vehicle) can be seriously caused. Therefore, the problem of vehicle jump at the bridge head is an important factor for the engineering quality and the construction cost of the high-grade road. The problem of vehicle jump at the bridge head is one of the difficulties which troubles municipal administration engineering technicians. The problem of bumping at the bridge head is solved, and the method is an important task of municipal facility management departments.

The main reasons causing the bump at the bridge head include uneven settlement, sudden rigidity change, vehicle speed, vibration resistance of the vehicle and the like. In terms of urban road conditions, uneven settlement occurs at the joint between a flexible road and a rigid structure, and the occurrence of slab staggering is mainly caused. The bridge, the roadbed and the pavement are different in material composition, rigidity, strength, expansion and contraction and the like, and concentrated stress is easily formed at the bridge head joint when the stress is applied. Under the action of vehicle load, structural dead weight and natural factors, the bridge and the road are settled simultaneously, but the settlement of the bridge and the road is greatly different, and the settlement of the road is far greater than that of the bridge, so that a platform is staggered, and the bridge head is jumped when the vehicle is driven.

Particularly, the phenomenon of vehicle bump at the bridge head of a soft land is very common, the soft land is under vehicle load and natural factors (such as rainwater, soil stratum deformation and stratum settlement difference), the general treatment scheme is to dig away original soil ores causing the vehicle bump at the bridge head of the soft land on the basis of an original road, change and fill and additionally lay the original bottom soil layer, the construction period is generally longer, the vehicle passing is seriously influenced, and the phenomenon of the vehicle bump at the bridge head of the position where the corresponding phenomenon occurs is higher than that of other places.

Disclosure of Invention

The invention mainly aims to provide a device applied to bridge head vehicle jumping in a soft soil area and a rapid treatment method thereof, and aims to solve the problems of long construction period and poor stability of the bridge head vehicle jumping in the soft soil area.

In order to achieve the purpose, the invention provides a device applied to vehicle bump at bridge head in a soft soil area, which comprises a prefabricated light block body arranged on an original bottom soil layer, geotechnical cloth positioned above the light block body, a reinforcing layer positioned above the geotechnical cloth, and a prefabricated hard block body positioned above the reinforcing layer, wherein a fixing device is arranged between the light block body and the hard block body.

Further, the light block is 0.5-1.5 m in length, 0.5-1 m in width and 0.1-0.3 m in thickness.

Further, the hard block has a length of 0.5-1.5 m, a width of 0.5-1 m, and a thickness of 0.1-0.2 m.

Further, the fixing device comprises an L-shaped first through groove in the hard block, a first channel penetrating through the reinforcing layer and communicated with the bottom of the first through groove, a second channel positioned in the geotextile and communicated with the first channel, and a 7-shaped second through groove in the light block, wherein the first through groove, the first channel, the second channel and the second through groove are filled with glue.

Furthermore, the first through groove, the first channel, the second channel and the second through groove are sleeved with flexible steel wires.

Furthermore, the reinforced layer is made of cement mortar and fine stone concrete.

Further, an asphalt concrete layer is arranged above the hard block body.

Furthermore, a movable base plate is arranged above the hard block body and fixedly connected with the asphalt concrete layer, and the size of the base plate is matched with that of the hard block body.

Further, the top of the hard block body is provided with a groove, the groove is provided with a spring post, one end of the spring post is abutted against the hard block body, and the other end of the spring post is abutted against the base plate.

Meanwhile, the invention also provides a quick treatment method applied to the bump at the bridge head in the soft soil area, which comprises the following steps: treating the old roadbed, excavating, replacing and filling the prefabricated light blocks, and reducing the roadbed stratum load; then, laying geotextile on the light block body, and applying a leveling layer on the geotextile; paving a precast concrete cover plate on the leveling layer, wherein the concrete cover plate is made of high-strength concrete, and the two ends of the concrete cover plate are in staggered joint; and finally, fastening by using a connecting bolt.

According to the technical scheme, the prefabricated light block body and the prefabricated hard block body are arranged on the original bottom soil layer, so that a bad road section can be repaired conveniently and quickly, and meanwhile, the fixing device is arranged between the light block body and the hard block body, so that the device is more stable in structure and has a certain damping effect, and the phenomenon of bumping at the bridge head is avoided.

Drawings

FIG. 1 is a schematic plan view of the present invention;

FIG. 2 is an enlarged view of portion A of the first embodiment;

FIG. 3 is an enlarged view of the second embodiment at portion A.

In the invention, 1 is an original bottom soil layer, 2 is a light block body, 21 is a second through groove, 3 is geotextile, 31 is a second channel, 4 is a reinforcing layer, 41 is a first channel, 5 is a hard block body, 51 is a first through groove, 52 is a groove, 6 is colloid, 7 is a backing plate, 71 is a spring column, and 8 is an asphalt concrete layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that if directional indications (such as … …, which is up, down, left, right, front, back, top, bottom, inner, outer, vertical, transverse, longitudinal, counterclockwise, clockwise, circumferential, radial, axial) are provided in the embodiments of the present invention, the directional indications are only used for explaining the relative position relationship, motion condition, etc. of the components at a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first" or "second", etc. in the embodiments of the present invention, the description of "first" or "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a device applied to bridge head vehicle jumping in a soft soil area and a rapid treatment method thereof.

In the embodiment of the invention, as shown in fig. 1 to 3, the device applied to the bridgehead vehicle jump in the soft soil area comprises a prefabricated light block 2 installed on an original bottom soil layer 1, geotextile 3 positioned above the light block 2, a reinforcing layer 4 positioned above the geotextile 3, and a prefabricated hard block 5 positioned above the reinforcing layer 4, wherein a fixing device is arranged between the light block 2 and the hard block 5. Set up the light block 2 and the stereoplasm block 5 that make in advance at former bottom soil layer 1, can make things convenient for quick restoration bad highway section, set up fixing device simultaneously between light block 2 and stereoplasm block 5, make the device structure more stable, also have certain cushioning effect, avoided the phenomenon of bridgehead jump car.

Specifically, the light block body 2 has a length of 0.5 to 1.5 m, a width of 0.5 to 1 m, and a thickness of 0.1 to 0.3 m. More specifically, the hard block 5 has a length of 0.5 to 1.5 m, a width of 0.5 to 1 m, and a thickness of 0.1 to 0.2 m. Through make the light block 2 and the stereoplasm block 5 of above-mentioned size in advance at the mill, can install fast fixedly in the construction, need not wait for the cement cooling, and light block 2 and the stereoplasm block 5 of above-mentioned size make things convenient for in the actual construction, and use the soft land of most bridgehead jump car.

In the embodiment of the present invention, the fixing device comprises a first through groove 51 in the shape of L located in the hard block 5, a first channel 41 communicated with the bottom of the first through groove 51 through the reinforcing layer 4, a second channel 31 located in the geotextile 3 and communicated with the first channel 41, and a second through groove 21 in the shape of 7 located in the light block 2, wherein the first through groove 51, the first channel 41, the second channel 31 and the second through groove 21 are filled with the glue 6, the hard block 5, the reinforcing layer 4, the geotextile 3 and the light block 2 are connected through the glue 6 filled in the first through groove 51, the first channel 41, the second channel 31 and the second through groove 21, and the glue 6 is a non-vertical glue 6 and has a tensile fixing effect, and the glue 6 has a certain flexibility, can be quickly installed and fixed, and has high stability in later use.

More specifically, the first through groove 51, the first channel 41, the second channel 31 and the second through groove 21 are sleeved with flexible steel wires, and the first through groove 51, the first channel 41, the second channel 31 and the second through groove 21 are sleeved with flexible steel wires and then are filled with the colloid 6, so that the fixing effect of the hard block 5 and the light block 2 can be further improved.

In the embodiment of the invention, the reinforced layer 4 is made of cement mortar and fine stone concrete.

In the embodiment of the present invention, an asphalt concrete layer 8 is disposed above the hard block 5.

In another embodiment of the present invention, a movable backing plate 7 is disposed above the hard block 5, the backing plate 7 is fixedly connected with an asphalt concrete layer 8, and the size of the backing plate 7 are matched with the size of the hard block 5.

Specifically, the top of the hard block 5 is provided with a groove, the groove is provided with a spring column 71, one end of the spring column 71 abuts against the hard block 5, and the other end of the spring column abuts against the cushion plate 7. The phenomenon of bump at the bridge head on a soft ground is further improved by the arrangement of the spring columns 71.

The invention relates to a quick treatment method applied to bridge head vehicle bump in a soft soil area, which comprises the following steps of: treating the old roadbed, excavating, replacing and filling the prefabricated light blocks, and reducing the roadbed stratum load; then, laying geotextile on the light block body, and applying a leveling layer on the geotextile; paving a precast concrete cover plate on the leveling layer, wherein the concrete cover plate is made of high-strength concrete, and the two ends of the concrete cover plate are in staggered joint; and finally, fastening by using a connecting bolt. The rapid treatment method has no maintenance time, and the traffic can be immediately recovered after the rapid treatment is finished.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a be applied to device of soft soil area bridgehead bump car which characterized in that: the soil-working and soil-working combined type light block comprises a prefabricated light block body arranged on an original bottom soil layer, geotechnical cloth positioned above the light block body, a reinforcing layer positioned above the geotechnical cloth and a prefabricated hard block body positioned above the reinforcing layer, wherein a fixing device is arranged between the light block body and the hard block body.

2. The device applied to the bump at the bridge head in the soft soil area of claim 1, wherein: the light block has a length of 0.5-1.5 m, a width of 0.5-1 m and a thickness of 0.1-0.3 m.

3. The device applied to the bump at the bridge head in the soft soil area of claim 1, wherein: the hard block is 0.5-1.5 m long, 0.5-1 m wide and 0.1-0.2 m thick.

4. The device applied to the bump at the bridge head in the soft soil area as claimed in claim 1, wherein the fixing device comprises a first L-shaped through groove positioned in the hard block, a first channel penetrating through the reinforcing layer and communicated with the bottom of the first through groove, a second channel positioned in the geotextile and communicated with the first channel, and a second 7-shaped through groove positioned in the light block, and the first through groove, the first channel, the second channel and the second through groove are filled with glue.

5. The device applied to the bump at the bridge head in the soft soil area of claim 4, wherein: the first through groove, the first channel, the second channel and the second through groove are sleeved with flexible steel wires.

6. The device applied to the bump at the bridge head in the soft soil area of claim 1, wherein: the reinforced layer is made of cement mortar and fine stone concrete.

7. The device applied to the bump at the bridge head in the soft soil area of claim 1, wherein: and an asphalt concrete layer is arranged above the hard block.

8. The device applied to the bump at the bridge head in the soft soil area of claim 1, wherein: the stereoplasm block top is equipped with mobilizable backing plate, backing plate and asphalt concrete layer fixed connection, the backing plate with the backing plate suits with the stereoplasm block size: the top of the hard block body is provided with a groove, the groove is provided with a spring column, one end of the spring column is abutted against the hard block body, and the other end of the spring column is abutted against the base plate.

9. A quick treatment method applied to vehicle bump at bridge head in soft soil area is characterized by comprising the following steps: the method comprises the following steps: treating the old roadbed, excavating, replacing and filling the prefabricated light blocks, and reducing the roadbed stratum load; then, laying geotextile on the light block body, and applying a leveling layer on the geotextile; paving a precast concrete cover plate on the leveling layer, wherein the concrete cover plate is made of high-strength concrete, and the two ends of the concrete cover plate are in staggered joint; and finally, fastening by using a connecting bolt.