CN214362637U

CN214362637U - Abrupt slope high fill light soil antiskid roadbed structure

Info

Publication number: CN214362637U
Application number: CN202120408972.XU
Authority: CN
Inventors: 莫鹏; 吴武新; 杨弘全; 黄成年; 黄海峰; 畅振超; 黄伟; 陆光德; 骆俊晖; 郝天之; 王诗海; 曾富权; 吴春伟; 黎照; 廖来兴
Original assignee: Guangxi Beitou Transportation Maintenance Technology Group Co Ltd
Current assignee: Guangxi Beitou Transportation Maintenance Technology Group Co Ltd
Priority date: 2021-02-24
Filing date: 2021-02-24
Publication date: 2021-10-08
Anticipated expiration: 2031-02-24

Abstract

The utility model discloses a steep slope high fill lightweight soil skid resistant roadbed structure belongs to road bed construction technical field, including the steep slope road bed, dug a plurality of hole groove on the steep slope road bed, put into the steel reinforcement cage in the hole groove, pour the first layer of pouring on steel reinforcement cage and steep slope road bed, pour the second on the first layer of pouring and pour the layer, the second is pour and is provided with the roadbed layer on the layer. The utility model is used for control the road bed and subside, less take up an area of, reduce and destroy the environment, have unique advantage, elastic modulus, deformation modulus difference are very big between foam light soil and the foundation soil, directly pour foam light soil on the ground, interface produces easily and slides. After the shallow hole groove is excavated, a reinforcement cage is placed to pour the roadbed, the cast-in-place foam light soil and the foundation soil form a meshing structure, the engaging force of the foam light soil and the foundation soil is enhanced, and the roadbed is prevented from sliding laterally.

Description

Abrupt slope high fill light soil antiskid roadbed structure

Technical Field

The utility model relates to a road bed construction technical field especially relates to a steep slope high fill light soil skid resistant roadbed structure.

Background

At present, the construction of highways mostly passes through mountain road sections, the terrains of the mountain areas are complex, the cross slopes are steep, and the problem of lateral sliding of the roadbed exists in the construction process of high fill light roadbeds, so that the roadbed is unstable. Therefore, a light soil anti-skid roadbed structure is needed to be designed to solve the problem that the existing high fill roadbed is filled on a steep slope section.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steep slope high fill light soil cling compound roadbed structure solves the technical problem that current high fill light side road bed slides in the easy side direction in the steep slope highway section.

The utility model provides a steep slope high fill lightweight soil cling compound roadbed structure, includes the steep slope road bed, has dug a plurality of hole groove on the steep slope road bed, puts into the steel reinforcement cage in the hole groove, pours first the layer of pouring on steel reinforcement cage and steep slope road bed, has pour the second on the first layer of pouring and has pour the layer, and the second is pour and is provided with the roadbed layer on the layer.

Furthermore, the depth and the width of the hole grooves are the same, the hole diameter of the hole grooves is 0.5-1 m, the hole depth is 1-2 m, and the distance between the hole grooves is 2-3 m, and the hole grooves are arranged in a quincunx shape.

Further, the steel reinforcement cage sets up to the horn structure, and the steel reinforcement cage includes bottom drum steel reinforcement cage and top funnel steel reinforcement cage, and bottom drum steel reinforcement cage and top funnel steel reinforcement cage an organic whole set up, set up to hollow structure in the middle of the bottom drum steel reinforcement cage.

Furthermore, the first pouring layer is made of foam light soil doped with glass fibers, the density range is 700-800 kg/m3, the second pouring layer is made of foam light soil with the density range of 400-500 kg/m3, the top end of the first pouring layer is arranged to be a horizontal structure, and the density range of the roadbed layer is 700-800 kg/m 3.

Further, up degree of depth is dwindled gradually down from down in the hole groove on the abrupt slope road bed, and the steel reinforcement cage embolias every hole inslot, and the bottom of steel reinforcement cage and the bottom contact setting in hole groove, and the steel reinforcement cage is followed up length from down and is shortened gradually. The anti-skid structure is suitable for anti-skid of the lightweight soil roadbed with the slope of 30-50 degrees of cross slope.

The utility model adopts the above technical scheme, the utility model discloses following technological effect has:

the utility model is used for control the road bed and subside, less take up an area of, reduce and destroy the environment, have unique advantage, elastic modulus, deformation modulus difference are very big between foam light soil and the foundation soil, directly pour foam light soil on the ground, interface produces easily and slides. After the shallow hole groove is excavated, a reinforcement cage is placed to pour the roadbed, the cast-in-place foam light soil and the foundation soil form a meshing structure, the engaging force of the foam light soil and the foundation soil is enhanced, and the roadbed is prevented from sliding laterally.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is a top view of the hole and groove of the present invention.

Fig. 3 is the structural schematic diagram of the steel reinforcement cage of the utility model.

Reference numbers in the figures: 1-a first casting layer; 2-a second pouring layer; 3-roadbed layer; 4-steep slope roadbed; 5-a hole groove; 6-a reinforcement cage.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, preferred embodiments are described in detail. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.

Example 1:

the utility model provides a steep slope high fill lightweight soil antiskid roadbed structure, as shown in fig. 1-2, including steep slope roadbed 4, dig a plurality of hole groove 5 on steep slope roadbed 4, put into steel reinforcement cage 6 in the hole groove 5, pour first layer 1 of pouring on steel reinforcement cage 6 and steep slope roadbed 4, pour the second on first layer 1 of pouring and pour layer 2, the second is pour and is provided with roadbed 3 on the layer 2. The light foamed soil is a novel light roadbed material developed in recent years, is mainly a material formed by mixing materials such as cement, fly ash, water, a foaming agent, an admixture and the like, and has the characteristics of light weight, strength adjustability, high fluidity, standing property after solidification, good construction property, durability, heat insulation property, light weight and the like, can be used for controlling roadbed settlement in construction engineering, occupies less land and reduces the damage to the environment, and has unique advantages. The pouring layer 1 is made of foam light soil with high shear strength, and the density ranges from 700 kg/m to 800kg/m 3. The pouring layer 2 bears a small load of a traveling crane on the upper layer, in order to improve the light weight of the roadbed, foamed light soil with the density range of 400-500 kg/m3 is adopted for pouring, and the density range of the top layer 3 is 700-800 kg/m3, so that the strength and the stability of the roadbed are guaranteed, and the light weight of the roadbed is improved.

The embodiment of the utility model provides an in, as shown in fig. 1, at first handle the ground, dig out top layer loam, adopt the special hole machine excavation hole groove that digs, the degree of depth and the width in hole groove 5 are all the same, and hole groove 5 be aperture 0.5m ~ 1m, and hole depth 1m ~ 2m is spaced 2 ~ 3m between hole groove 5 and the hole groove 5, is the quincunx and arranges.

The embodiment of the utility model provides an in, as shown in fig. 3, steel reinforcement cage 6 sets up to the horn structure, and steel reinforcement cage 6 includes bottom drum steel reinforcement cage and top funnel steel reinforcement cage, and bottom drum steel reinforcement cage and the integrative setting of top funnel steel reinforcement cage set up to hollow structure in the middle of the bottom drum steel reinforcement cage. The first pouring layer 1 is foam light soil doped with glass fibers or EPS (expandable polystyrene) light foam soil, the second pouring layer 2 is foam concrete of a common foaming agent, and the top end of the first pouring layer 1 is arranged to be of a horizontal structure. And (3) placing a reinforcement cage in the excavated hole groove, pouring foamed lightweight soil by a layered pouring method as shown in figure 3, and firstly, pouring and forming 1 layer of EPS lightweight foamed soil with better shear strength to maintain the roadbed. And adopting a common foaming agent foam concrete to pour the roadbed of the 2 nd layer and the roadbed of the 3 rd layer, and respectively carrying out maintenance and molding. The first pouring layer is made of foam light soil doped with glass fibers, the density range is 700-800 kg/m3, the second pouring layer is made of foam light soil with the density range of 400-500 kg/m3, the top end of the first pouring layer is of a horizontal structure, and the density range of the roadbed layer is 700-800 kg/m 3.

The elastic modulus and the deformation modulus of the foam light soil are greatly different from those of foundation soil, the foam light soil is directly poured on a foundation, and the interface is easy to slide. After the shallow hole groove is excavated, a reinforcement cage is placed to pour the roadbed, the cast-in-place foam light soil and the foundation soil form a meshing structure, the engaging force of the foam light soil and the foundation soil is enhanced, and the roadbed is prevented from sliding laterally. The contact surface of the foam soil and the foundation soil is mainly under the action of shearing force, EPS concrete with higher shearing strength is adopted for pouring or foam light soil mixed with glass fiber is adopted, on one hand, the shearing resistance of an interface is improved, on the other hand, the EPS light soil or foam light soil mixed with glass fiber is used at the lower part, normal foaming light soil is used at the upper part, the whole roadbed is composed of light soil, and the roadbed can effectively reduce the self weight and the settlement. Small-size steel reinforcement cage is placed to the juncture, promotes the juncture shear behavior on the one hand, and on the other hand steel reinforcement cage upper portion adopts tubaeform setting, has strengthened the joint strength with layer 1 bulky foam concrete, prevents that the meshing position from splitting. The construction of layer 1 is carried out by adopting a cast-in-place mode, the integrity of layer 1 is greatly ensured, and the occlusion strength is effectively improved.

Example 2:

this embodiment is different from embodiment 1 in that, the hole groove 5 on the abrupt slope road bed 4 is followed up the degree of depth from down and is progressively decreased gradually, and in steel reinforcement cage 6 emboliaed every hole groove 5, the bottom of steel reinforcement cage 6 and the bottom contact setting of hole groove 5, steel reinforcement cage 6 is followed up length from down and is shortened gradually. Because the atress of bottom is great, the depth of the hole groove 5 that consequently sets up is darker, and the length of steel reinforcement cage 6 is longer for the length of embedding solid soil is longer, more accords with the atress.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a steep slope high fill light soil antiskid roadbed structure which characterized in that: including abrupt slope road bed (4), a plurality of hole groove (5) have been dug on abrupt slope road bed (4), put into steel reinforcement cage (6) in hole groove (5), pour first layer (1) of pouring on steel reinforcement cage (6) and abrupt slope road bed (4), pour the second on first layer (1) of pouring and pour layer (2), the second is pour and is provided with road bed layer (3) on layer (2).

2. The steep slope high fill lightweight soil skid resistance roadbed structure of claim 1, wherein: the hole grooves (5) have the aperture of 0.5-1 m, the hole depth of 1-2 m and the distance between the hole grooves (5) and the hole grooves (5) of 2-3 m, and are arranged in a quincunx shape.

3. The steep slope high fill lightweight soil skid resistance roadbed structure of claim 2, wherein: steel reinforcement cage (6) set up to the horn structure, and steel reinforcement cage (6) include bottom drum steel reinforcement cage and top funnel steel reinforcement cage, and bottom drum steel reinforcement cage and top funnel steel reinforcement cage an organic whole set up to hollow structure in the middle of the bottom drum steel reinforcement cage.

4. The steep slope high fill lightweight soil skid resistance roadbed structure according to claim 3, wherein: the first pouring layer (1) is made of foam light soil doped with glass fibers, the density range is 700-800 kg/m3, the second pouring layer (2) is made of foam light soil with the density range of 400-500 kg/m3, the top end of the first pouring layer (1) is arranged to be a horizontal structure, and the density range of the roadbed layer (3) is 700-800 kg/m 3.

5. The steep slope high fill lightweight soil skid resistance roadbed structure of claim 1, wherein: hole groove (5) on abrupt slope road bed (4) are followed up degree of depth from down and are progressively decreased progressively, and in steel reinforcement cage (6) emboliaed every hole groove (5), the bottom of steel reinforcement cage (6) and the bottom contact setting of hole groove (5), steel reinforcement cage (6) are followed up length from down and are shortened gradually.