What is the relationship between the outer width of the subgrade and the widening value? Hurry, hurr

The widening value is taken according to the different radii of the specification and the number of different lanes, as well as according to the specific situation of the filling method, the filling material and the foundation.

There is no outer widening of the roadbed, only a two-lane secondary road.

Below, the radius is not more than 250m, and it needs to be widened on the inside of the curve.

The compaction widening value on the roadbed side is 50cm.

Legal Analysis: 1. Different in nature.

1. Pavement width: that is, the width of the road, in urban planning, refers to: only including the width of the roadway and the sidewalk, excluding the width of the urban greening and other land on the outside of the sidewalk, which is mainly determined by the traffic volume. The width of the curb is not expanded.

2. Subgrade width: It is an important concept in road traffic design, and usually the subgrade width of different grades of highways has a standard width value.

Second, the calculation is different.

1. Pavement width: roadway width, excluding shoulder width.

2. Subgrade width: the width of the highway subgrade is the sum of the width of the pavement and the width of the shoulders on both sides, and when there is a median belt, an emergency parking zone, a climbing lane, a variable speed lane, and a wrong lane, the width of these parts is also included.

Legal basis: Regulations on the Operation and Management of Urban Rail Transit》 Article 5 The competent department of urban rail transit operation shall comprehensively consider the connection with urban planning, the demand for passenger flow of urban rail transit, the operation safety guarantee and other factors in the stage of soliciting opinions on the planning and construction plan of urban rail transit, and put forward opinions on the layout and scale of the line network, transfer hub planning, construction timing, resource sharing, construction of the integrated emergency command system of the line network, line function positioning, line system, system scale, traffic connection, etc. The competent department of urban rail transit operation shall put forward opinions on passenger flow, system design and transportation capacity, driving organization, operation management, operation services, operation safety, etc.

Summary. Dear, hello, I am glad to answer for you, the width of the roadbed needs to consider the thickness of the pavement structure layer. Because the subgrade width is designed to provide sufficient support to bear the load of the pavement structural layer.

If the width of the roadbed is insufficient, it will make the pavement structure layer easy to settle, deform or damage, thus affecting the service life and safety performance of the road. Therefore, when designing a road, it is usually necessary to determine the width of the roadbed according to factors such as the type and thickness of the pavement structure layer, as well as the groundwater level. When determining the width of the subgrade, it is also necessary to consider the bearing capacity, compressive modulus and other characteristics of the subgrade material to ensure sufficient heavy-load bearing capacity and stability.

Dear, the above is mine, I hope these contents can help you, thank you for your understanding and support, I will continue to work hard. Thank you, dear.

Dear, hello, I am glad to answer for you, the width of the roadbed needs to consider the thickness of the pavement structure layer. Because the subgrade width is designed to provide sufficient support to bear the load of the pavement structural layer. If the width of the roadbed is insufficient, it will make the pavement structure layer easy to settle, deform or damage, which will affect the service life and safety performance of the road.

Therefore, when designing a road, it is usually necessary to determine the width of the roadbed according to factors such as the type and thickness of the pavement structure layer, as well as the groundwater level. When determining the width of the roadbed foundation, the bearing capacity, compressive modulus and other characteristics of the roadbed material need to be considered to ensure sufficient heavy-load bearing capacity and stability. Dear, the above is mine, I hope these contents can help you, thank you for your understanding and support, I will continue to work hard.

Thank you, dear. The pavement structure of the 26m pavement layer bridge slope slope rate is slippery, and whether the width of the roadbed filling is 26+ (

Dear, hello, I'm glad to answer for you, the width of the subgrade filling should be meters, the calculation formula is: the width of the subgrade section filling = the width of the pavement + the slope slope rate x the thickness of the pavement structure layer) x 2 The width of the pavement is 26 meters, the thickness of the pavement structure layer is meters, the slope slope rate is, and the substitution formula is calculated: the width of the roadbed bench reed skin filling = 26 + (x 2 = m dear, your calculation result is correct.

In other words, the width of the subgrade filling should consider the width generated by the pavement structure layer and the slope, right?

Yes yes. That is, the final filling of the roadbed is completed, and only after the pavement structure remains, the width of the roadbed on one side should be guaranteed.

Yes, you can. It feels like yours is very unprofessional.

Yes, after the completion of the subgrade filling, the width of the subgrade should be guaranteed to be in meters for the span and design standards of the road section, which is also determined based on design requirements and safety considerations. Before the construction of the complete pavement structure, the guarantee of the width of the roadbed is also very important, and the family hall also needs to check and adjust the pre-beaming flatness and compaction of the hail roadbed to ensure the bearing capacity and stability of the pavement structure.

I have to explain.

There are no substantive suggestions, not sure enough to say that it should be, so what should this mean.

Why bother with this word, I'm sure you question it again, and if you don't add it, you should question it again, and it's sure to be in Miha.

The width range of the roadbed is composed of the width of the road surface, the width of the separation, the width of the hard shoulder, and the width of the dirt shoulder, so the width of the roadbed is more than the width of the road surface by the three parts of the separation belt, the left and right 2 hard shoulders, and the left and right 2 dirt shoulders, such as the highway design speed of 100km h, the ** separation zone 2m, the hard shoulder 3m, the dirt shoulder, the roadbed is 2 + 2 * 3 + 2 * wider than the road surface. The first-class road is about 8 meters wide, and the second-class road is about 8 meters wide, depending on the grade of the road and the design speed.

The width of the roadbed minus the width of the curbs on both sides is the width of the pavement.

Answer] :d fill should be layered for wax resistance. After the lower layer of filling is qualified, the upper layer can be filled. The width of the roadbed filling soil should be 500mm wider than the design width on each side.