CN212895734U - Expressway intercommunicating ramp widening structure - Google Patents

Abstract

The utility model relates to a highway intercommunication ramp widens structure, the outward appearance that road bed 20 ~ 30cm is thick is clear away according to 1: 1.5's slope rate along the initial curb inboard of intercommunication ramp the road bed is followed its direction of height excavation multistage step and is adopted solidified soil to fill the road bed widens the width formation and widens the road bed to the design, the slope rate of widening the road bed is established to 1:1.5, just widen be equipped with on the road bed with widen the consistent curb of road bed slope rate, the curb with lay cement stabilization gravel subbase, cement stabilization rubble basic unit and cement concrete surface course by supreme down in proper order between the road surface of intercommunication ramp. The utility model discloses a solidification soil is filled and built, enables to widen and forms a holistic plate structure after the road bed compaction, reaches the compactness that conventional soil body can not reach, is showing and improves soil body intensity, has more excellent stability and impermeability, can solve well that the intercommunication ramp widens the problem that has the difference to subside between the old and new road bed after.

Description

Expressway intercommunicating ramp widening structure

Technical Field

The utility model relates to a highway construction maintenance field especially relates to a structure is widened to highway intercommunication ramp.

Background

With the rapid development of economy in China, the traffic volume of the highway is gradually increased year by year, and due to the fact that rapid increase of traffic is not estimated enough when the highway is built in the early period, a part of the existing highway is communicated to present a situation of traffic saturation, so that the communication efficiency of the highway is greatly reduced, the highway cannot adapt to the requirements of the service level, the traffic volume increase and the social development of the highway, and capacity expansion and transformation are urgently needed to improve the communication capacity.

Compared with the newly-built road, the widening and reconstruction of the old road, particularly the widening and reconstruction of the intercommunicating ramp has the characteristics of high construction difficulty, complex process, high quality requirement and the like. The biggest technical problem of widening the highway subgrade is to solve the uneven settlement of the new subgrade and the old subgrade, and the new subgrade and the old subgrade have different settlement deformations due to different settlement, which inevitably causes the difference settlement between the new subgrade and the old subgrade. Although some experiences are accumulated in highway widening projects finished by filling undisturbed soil or other traditional construction technologies in the past of widening the roadbed in China, the problem of uneven settlement of new and old roadbeds for widening the highway is not solved by a formed technology, and many widening projects are not good in technology.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a structure is widened to highway intercommunication ramp widens, widens the road bed and adopts the solidification soil to fill, can effectively reduce the differential settlement problem between the new and old road bed of intercommunication ramp.

The utility model provides a technical scheme that its technical problem adopted is: the utility model discloses a highway intercommunication ramp widens structure and clears away the outward appearance that road bed 20 ~ 30cm is thick according to 1: 1.5's slope ratio along the initial curb inboard of intercommunication ramp the road bed widens the width formation along its direction of height excavation multistage step and adopt solidified soil to fill out the road bed to the design and widen the road bed, the slope ratio of widening the road bed is established to 1:1.5, just widen be equipped with on the road bed with widen the consistent curb of road bed slope rate, the curb with lay cement stabilization gravel subbase, cement stabilization rubble basic unit and cement concrete surface course by supreme down in proper order between the road surface of intercommunication ramp.

In a preferred embodiment of the highway intercommunication ramp widening structure provided by the present invention, the solidified soil is formed by mixing natural soil, cement, a curing agent and water.

In a preferred embodiment of the highway intercommunication ramp widening structure provided by the present invention, the moisture content of the solidified soil is not more than 2%.

In a preferred embodiment of the highway intercommunication ramp widening structure provided by the utility model, the slope of the road shoulder is greater than the slope of the road surface of the intercommunication ramp.

In a preferred embodiment of the highway intercommunication ramp widening structure provided by the present invention, the slope of the road shoulder is 3%.

In a preferred embodiment of the highway intercommunication ramp widening structure provided by the utility model, the width of the step is 200cm, just the step is equipped with the inward slope, the slope is 3%.

In the utility model provides a highway intercommunication ramp widens a preferred embodiment of structure, multistage the step adopts the mode of excavation and filling one by one to form.

The utility model provides a highway intercommunication ramp widens in a preferred embodiment of structure, 4% cement stabilization gravel subbase that 18cm is thick is laid to cement stabilization gravel subbase, cement stabilization gravel base is for laying 5% cement stabilization gravel base that 18cm is thick, the cement concrete surface course is 26cmC40 cement concrete surface course.

In a preferred embodiment of the highway intercommunication ramp widening structure provided by the utility model, the road shoulder is formed by pouring C25 cast-in-place concrete.

Compared with the prior art, the utility model provides a highway intercommunication ramp widens beneficial effect of structure is: the utility model discloses a driving some earlier original road bed, adopting the solidification soil to widen the filling again, just the road bed that the solidification soil formed is connected the face with original road bed and is adopted multistage step structure, has guaranteed to widen the good linking of road bed and original road bed, and the solidification soil filling simultaneously enables to widen and forms a holistic plate structure after the road bed compaction, reaches the compactness that conventional soil body can not reach, is showing and improves soil body intensity, has more excellent stability and impermeability, can solve well that there is the problem that the difference subsides between the old and new road bed after the intercommunication ramp is widened.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:

fig. 1 is a sectional structure view of the highway intercommunication ramp widening structure provided by the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, in the widening structure for the interchange ramp of the highway according to the present embodiment, an outer surface of a roadbed 20-30 cm thick is removed along an inner side of an initial shoulder of the interchange ramp at a slope ratio of 1:1.5, a plurality of steps 12 are excavated on the roadbed 1 along a height direction thereof, and the roadbed 1 is filled with solidified soil to a designed widening width to form a widened roadbed 2, which can be designed to widen by 350cm in the present embodiment, where the slope ratio of the widened roadbed 2 is set to 1:1.5, just widen be equipped with on the road bed 2 with widen 2 uniform road shoulders 3 of slope rate of road bed, road shoulders 3 with lay cement stabilization gravel subbase 10, cement stabilization rubble basic unit 20 and cement concrete surface course 30 by supreme down in proper order between the road surface of intercommunication ramp.

The embodiment adopts and clears away partly original road bed earlier, adopts the solidification soil to widen the filling again, just the road bed that the solidification soil formed adopts multistage step structure with original road bed connection face, has guaranteed to widen the good linking of road bed and original road bed, and solidification soil filling simultaneously enables to widen and forms an holistic plate structure after the road bed compaction, reaches the compactness that conventional soil body can not reach, is showing and improves soil body intensity, has more excellent stability and impermeability, can solve the problem that the difference subsides exists between the new and old road bed after the intercommunication ramp is widened well.

Preferably, the solidified soil of the embodiment is formed by mixing natural soil, cement, a curing agent and water, specifically, the natural soil may be silt, clay, silty clay, silt, sand, fine sand, and the like, wherein the natural soil accounts for 92% to 96%; the cement can be ordinary portland cement with the proportion of 1-6%; the curing agent is an environment-friendly high-strength curing agent, the proportion of the curing agent is 0-0.025 percent, and the water is industrial water or agricultural water.

Preferably, the moisture content of this embodiment the solidified soil is no more than 2%, can guarantee to roll and reach the big closely knit degree of construction control easily, avoids the too big compacted soil of messenger's moisture content to appear "spring", and the problem of the difficult compaction again of moisture content is little.

Preferably, the slope of the shoulder 3 of this embodiment is greater than the slope of the road surface of the intercommunicating ramp, and the slope of the shoulder 3 of this embodiment can be set to 3%, so as to ensure that the water on the road surface can be rapidly discharged to the drainage ditch 4.

Preferably, the width of step 12 of this embodiment is 200cm, and step 12 is equipped with inward slope, the slope is 3%, and the problem that solidified soil landslide appears can be avoided to the inward slope that sets up, makes the widening road bed that solidified soil filled up link up with original road bed more reliable.

In a specific embodiment, the steps 12 of the present embodiment are formed by excavating and filling one by one, that is: excavating the bottom of the original roadbed, filling solidified soil, compacting, excavating the next step, filling the solidified soil, compacting, and thus filling the solidified soil.

Preferably, the cement stabilized gravel sub-base 10 of the present embodiment is a 4% cement stabilized gravel sub-base laid 18cm thick, the cement stabilized macadam base 20 is a 5% cement stabilized macadam base laid 18cm thick, and the cement concrete overlay 30 is a 26cmC40 cement concrete overlay.

Preferably, the road shoulder 3 of the present embodiment is cast by C25 cast-in-place concrete.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes made by the present specification can be changed, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a highway intercommunication ramp widens structure which characterized in that: removing the outer surface of a roadbed with the thickness of 20-30 cm along the inner side of an initial road shoulder of an intercommunicating ramp according to the slope rate of 1:1.5, excavating multiple steps on the roadbed along the height direction of the roadbed, filling the roadbed with solidified soil to a designed widening width to form a widened roadbed, wherein the slope rate of the widened roadbed is set as 1:1.5, just widen be equipped with on the road bed with widen the consistent curb of road bed slope rate, the curb with lay cement stabilization gravel subbase, cement stabilization rubble basic unit and cement concrete surface course by supreme down in proper order between the road surface of intercommunication ramp.

2. The highway intercommunicating ramp widening structure according to claim 1, wherein: the water content of the solidified soil is not more than 2%.

3. The highway intercommunicating ramp widening structure according to claim 1, wherein: the gradient of the road shoulder is greater than the gradient of the road surface of the intercommunicating ramp.

4. The highway intercommunicating ramp widening structure according to claim 3, wherein: the slope of the road shoulder is 3%.

5. The highway intercommunicating ramp widening structure according to claim 1, wherein: the width of step is 200cm, just the step is equipped with inward slope, the slope is 3%.

6. The highway intercommunicating ramp widening structure according to claim 1 or 5, wherein: the steps are formed in a mode of excavating and filling one by one.

7. The highway intercommunicating ramp widening structure according to claim 1, wherein: cement stabilization gravel base course is for laying the thick 4% cement stabilization gravel base course of 18cm, cement stabilization gravel base course is for laying the thick 5% cement stabilization gravel base course of 18cm, the cement concrete surface course is 26cmC40 cement concrete surface course.

8. The highway intercommunicating ramp widening structure according to claim 1, wherein: the road shoulder is formed by pouring C25 cast-in-place concrete.

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