subgrade

The surface deflection has linear change with base thickness and curve changes with subgrade resilient modulus and base resilient modulus.

Also, as the cyclic loading effects of the train to the subgrade, the improved subgrade needs to possess quality dynamic characteristics.

But for large subgrade depth, the effect of reinforcement did not significantly increased with the increase of subgrade depth.

Dynamic stress is distributed as saddle along the lateral direction of subgrade surface. Dynamic stress along the depth declines sharply.

In subgrade construction of railway engineering, the total cost of construction materials costs of more than 60%.

Now, reinforced soils have been used widely in road, railway subgrade, slope, retaining wall, bank protection and so on.

The results show that the geocell reinforcement can reduce the settlement of the subgrade, but a size effect is existed.

Without a strong and stable subgrade there is no stable pavement.

The increase of axle load and track regularity are the key factors affecting the dynamic stress of subgrade as the speed of train increases.

Foundation soil coefficient of subgrade reaction is an important computation parameter in geotechnical engineering.

However, high-speed railway at the same places a more strict demand on the settlement of subgrade, especially post-construction settlement.

Cement-soil is an important filling material used in the railway subgrade engineering.

In the road construction, road pavement subgrade compaction is to ensure the quality of the foundation.

The thickness of the base and sub-base shall be determined by the Engineer from subgrade strength tests .

Due to the characteristics and difficulties of subgrade longitudinal cracks, a flexible beam (FB) technique is put forward.

On this basis, the paper put forward common principles and methods of subgrade geological hazard identification.

As it does for road's bearing structure, the strength and stability of subgrade influence road's service quality and life.

ABAQUS is used to calculate theoretical deflection with subgrade nonlinear constitutive model and dynamic parameters of the other layers.

The paper gives a simple discussion on excessive wet soil treating method and the precaution during subgrade construction process.

Applying for MARC software, three-dimensional numerical model of differential settlement at bridge-subgrade transition section was built.

Vegetation is one of main modes for highway subgrade slope protection.

The strength and stability of subgrade not only should be ensured through the good design, and can be realized through the construction.

Through analysis, the main reasons of high fill embankment faults are unreasonable design and construction of subgrade.

Familiar with subgrade construction process and roadbed construction process should be noted.

Researchers compared the predicted AC tensile strains and subgrade vertical strains from the finite element and layered elastic analyses.

Site stripping, subgrade preparation, rough and finish grading, excavation, backfill and compaction.

The results of experiments and engineering show that it is feasible to adopt dry compaction procedure for subgrade construction road.

The location of Geogrid layers and the layer numbers have significant impact on reducing the lateral displacement of the subgrade.

Road bed is the subgrade on which are laid the ballast, ties and rails.

Heard to repair roads, and people are happy, regardless of road construction or repair subgrade, are very positive.

Subgrade construction quality directly affects the quality of the road works.

The settlement and deformation behavior of the soft clay subgrade are analyzed in detail before and after the opening to traffic.

CBR is the key parameter to evaluate the load-carrying capacity of subgrade, which depends on many factors.

comparatively saying , the control of subgrade deformation in existing building has a more important engeering meaning.

Therefore, this paper mainly studies settlement calculation and forecast of soft soil subgrade by vacuum preloading.

Subgrade as a major component of the road, its quality and the severity of disease related to traffic safety.

And this paper puts forward some methods for preventing engineering accidents occurring in subgrade and foundation.

The damage of water for highway subgrade and pavement has already aroused domestic and foreign scientific research departments' attention.

For excavation of stone subgrade, weathered stone and soft stone are dug and loaded by excavators and transported by dumping trucks.

The mechanism of erosion at side slope and its manifestation in subgrade are described.

In the mountain area, the subgrade is usually filling by soil-rock mixtures.

Consolidation behavior of composite subgrade is discussed by taking cement-soil mixing piles for studied object.

Moreover, from the slope condition of rock-filling subgrade, the method and technical request of constructing slope will be suggested.

considering the feature of subgrade deformation , the off set limit and the settlement calculation depth are discussed in this paper.

By using plastic drainage and preloading consolidation methods, soft clay subgrade was reinforced and monitored.

For treatment subgrade diseases caused by water capillary rise, it is needed to acquire the law of capillary rise in the soil.

As example of subgrade material inspection, this paper described the "Task-driven" Pedagogic Method in teaching and the problem in use.

The coefficient of subgrade reaction k is an important parameter in metro design.

It can be used to guide construction in subgrade engineering in Wenzhou-fuzhou railway and give some suggestion to similar engineering.

It also clearly shows that it is feasible to apply deep-layer mixing method of cement to strengthening soft soil subgrade.

Therefore, how to exactly detect subgrade disease and apply effective treatment is particularly important for operation of the highway.

The conclusion is that the post-construction settlement of subgrade can be efficiently reduced by gapped pile foundation.

The result mentioned above provided a technical references for collapsible loess subgrade treatment in this area.

According to the engineering features mechanics performance of subgrade karst roof in karst region, the calculate model was established.

However, the compaction of subgrade with silt requires isolation measure with low water content.

Subgrade is the important part of the highway engineering and the base of the pavement.

For small subgrade depth, the effect of reinforcement significantly increased with the increase of subgrade depth.

In this article, the author put forward some views on the highway bridge technology of soft subgrade treatment.

The significance of protective effect of vegetation on subgrade is emphatically analyzed.

treatment advice was put forward on bend buttress pier foundation for laying pipe in soft soil subgrade.

Discussion is made on the experiences and achievement in applying the lining design construction for the clay subgrade.

Subgrade pavement strength and stability are closely related with water.

By using cylindrical pile compound subgrade, the high embankment section has a good antiskid quality.

Using subgrade and roadbed as case, the paper discusses the follow-up value of engineering dossier .

The strength and stability of subgrade is the basic conditions to ensure the stability of road.

Jiyuan-Saoyuan Expressway deals with mud rock and sandstone filled subgrade with dynamic consolidation.

The greater the gradient is, the poorer the stability of the subgrade goes.

The top 600 mm of the subgrade shall be formed using soft material.

The study may be useful to the selection, design and construction of subgrade treatments in highway widening engineering.

The key technology of subgrade design is solving the problem of subgrade frost heave in seasonal frozen soil area.

At last, CBR values of subgrade filling in loess region were investigated and counted.

Commercial golf courses utilize a subgrade of combined layers of gravel and sand.

Dynamic consolidation subgrade composite with rock; 6. soil-rock composite subgrade.

Salt expansion in subgrade is the results of Changes in the external environment.

Fill subgrade is parallel with fill step. Each fill surface should have more than 3% gradient. It is good for drainage.

China 2nd Highway Survey and Design Institute. A handbook of highway designing: subgrade[M]. Beijing: China Communications Press, 1996.

All three-analysis methods gave similar predictions of pavement rutting life based on the subgrade strain criterion.

Residual water exists at the foot of subgrade slope in some sections along Qinghai-Tibet railway.

With the rapid development of highways, diseases of subgrade in use become prominent day by day.

In order to better simulate the vibration of the subgrade under earthquake; and flexible wall container, a new technique, was used.

This article tries to analyze quality control measures based on the construction of highway subgrade.

Earth subgrade is refitted from top to bottom by human or machines.

In order to demonstrate the applicability of red-mudstone as subgrade bed filling, static and dynamic triaxial tests are performed.

The safety of the high-speed train is affected by the frost damage of the railway subgrade in China's north frozen soil zone.

Freezing and thawing of water will lead to uneven frost, thawing and pumping of the subgrade.

There are 50 years history about subgrade construction technology and the relevant research in the permafrost regions.

In addition, the subgrade was modeled using infinite elements.

In roadbed construction, excessive soil is used to fill subgrade because of weather and construction schedule constraints and other reasons.

Discussion is made on the mechanism of AWD and FWD applied for subgrade test.

With the increase of train speed, the frost hazard of subgrade engineering in seasonally frozen soil becomes more and more serious.

Considering safety and economy, the authors think it is suitable to mingle 5% cement in Q4 loess for filling in subgrade.

Dong Xiang. Application and Construction of Roller Compacted Concrete in Road Construction[J]. Subgrade Engineering, 2008(3): 15-17.

Ballastless track on soil subgrade has been already widely used on high-speed railway abroad, but it is just at the starting stage in China.

The thickness used is 152 mm AC layer, 304 mm base layer, and infinite of subgrade.

Those who engaged in highway construction technician know that a road subgrade construction in each play an important role.

Therefore, the problem of Train-Track-Subgrade coupling dynamics is drawing more and more academic attention.

High-speed rail requires not only high strength subgrade, but also the high control of the settlement.

In Japan and Germany , A species and part of B species filling are used for filing subgrade in principle.

Contrasting Analysis of Two Forecasting Models Used for Subgrade Settlement Prediction

Experiment Study of the Relationship Between the CBR Strength and Degree of Compaction of Subgrade Soil

The construction technology of strengthening watery soil fill-up in soft soil subgrade

Experimental study on compacting evaluation method used for subgrade filled using soil and stone mixed material

Influence of Pavement Under Discrepant Deformation After Construction Between Existing Subgrade and That to Be Widened

Test and Construction Technology of Natural Sandy Gravel Used for Subgrade Reclamation

Analysis the Cause of Subsidence and Its Remedy of the Subgrade of A Building

Investigation of the Composite Subgrade Settlement Theory in Effect Applied to Composite Subgrade Under Different Rigidity Foundation

An Analysis for Control Result of Embankment Settlement Rate of Soft Soil Subgrade in Railway

Construction Practice of Mixing Piles Used for Earth Retaining in Flow-Plastic Muddy Subgrade

Study of the interaction among tall building superstructure foundation and subgrade foundation soils

Production of crushed stone with mixture ratio used in surface layer of subgrade bed and its construction technology

The Axisymmetric Mixed Boundary-Value Problem of the Vertical Vibration of a Rigid Foundation on Saturated Layered Soil Subgrade

Application of a section survey system to setting out of tunnels and subgrade

Natural Crushed Stone Sand Soil Used for Treatment of High-grade Highway Weak Subgrade

Test Study of the Influence to Subgrade Stability by Different Index of Low Liquid Limit Silty Soil Subgrade Compaction

Application of Strong Tamping and its Replacement Technology in Reinforcing Composite Subgrade of Railway Passenger Dedicated Line

Characteristics of subgrade defect in Huaibin-Guangshan segment of Jingjiu Railway Line and its prevention and control countermeasures

Treatment for Soft-soil Subgrade in An Expressway and Analysis of Its Settlement and Deformation

Investigation and Analysis on the Expansive Soil(Rock) Subgrade Lesion and Its Reinforcing-Protecting Measures in Nanning-Kunming Railway

Experiment for Treatment of the Poor Soil Used in Highway Subgrade

The Cause Analyse and its Dealing of the Settlement and slide Emerged from Higher Subgrade

Analysis for result of subgrade modulus backcalculation

Application of high pressure rolling-jetting slurry compression technology in a finished soft base under a filling subgrade

Attempt to Treatment of Subgrade Bed Lesion by Heavy Machine at Xiangfan- Chongqing Railway

Study on Impact Compaction Construction Technology Used in Expressway Connection Subgrade

Model Test Study of Dynamic Performances of the Subgrade Reinforced with Geocell and Geonet

The Study of the Factors Exerting Influence on Compaction of Subgrade and of the Treatment Measures

Study of Frost Heaving Susceptibility of Fine-Grain Soil of Highway Subgrade in Seasonally Frozen Ground Regions

The influences of the asphalt pavement deformation due to the differential subgrade settlements

Experimental study on construction technology of improved filling material used in subgrade of high-speed railway

Experimental study of improvement technology of subgrade fill consisting of poorly graded fine sand

Application study of treating differential settlement of subgrade with geocell

Experimental study of the impacting compaction of highway subgrade

Dynamic Control Technology for Subgrade Construction of Qinhuangdao- Shenyang Special Railway Line for Passenger Transportation

Theory of Heavy Tamping Reinforcing Weak Subgrade and an Example of it's Application

Elementary discussion on protective technique of subgrade side-slope with vegetation and its application

Elementary Introduction Planting Protection on Subgrade Slope from Standard Demonstration of Greening Passageway Section

An analytical solution for lateral vibration of a pile with finite length pile in viscoelastic subgrade

Application study of cool-regeneration subgrade and subbase technic on asphalt pavement

Project Characteristics Analysis of Geogrid and Its Application in Highway Subgrade Treatment

Analysis on Reasons and Treatment of a Complex Subgrade with the Lower Bearing Capacity

Testing Study of Continuous Compaction Controlling for Rock Ballast Subgrade of Shen -Da Freeway

An Analytical Study on Consolidation Settlement Characteristics of the Sand Drain (Wall) Subgrade under Embankment Load at Soft Soil Area

Problems in subgrade construction for reconstructing of small radius curve section and its treatment method

Application Study of Transient Rayleigh Wave in Inspection of Subgrade Compaction

Subgrade Stability Analysis of A Sewerage Reservoir Extension Project

Determination of mixing ratio of graded crushed stone for surface layer of subgrade bed and its construction technology

Application Study of Rayleigh Wave to Subgrade Quality's Inspection on Freeway with No-damage

Investigate the Subgrade Defect of a Certain Section on Beijing-Jiulong Railway

Damage Types in Subgrade Drainage in Loess Mountain Area and Measures to Its Prevention

Mechanism occurring mud-pumping in subgrade bed on Yanzhou-Shijiazhuang railway line and its treating measures

Research on the Technologies for Construction of Ballastless Track Subgrade of Suining-Chongqing Railway Line and Its Settlement Observation

Study of Inversion Analysis on Composite Subgrade Deformation Modulus

Elementary Introduction of Design for Construction Organization Concerning Subgrade Major Overhaul

Comprehensive Treatment and Rectification of A Buildings on Soft Subgrade

On Differential Settlement of High Filled Subgrade and Its Countermeasure in Design and Construction

Differential settlement characteristics and influencing factors of widening subgrade

Construction Technique of Transition Zone Between Subgrade and Culvert on Qinhuangdao-Shenyang Occupation Railway of Passenger Train

Model test for settlement characteristic study of subgrade filled with soft rock

Analysis on the Characteristic Experiment for the Subsidence with the Sand Piles and Geogrid to Strengthen the Railway Subgrade Bed

Semi-analytical Solution to One-Dimensional Consolidation Equation of Layered Non-homogeneous Subgrade

Strengthening Design and Construction of a Hotel Subgrade and Foundation

Application of the Concrete Compaction Piles in Preventing the Subgrade of Xinyi-Changxing Railway from Sinking in Operation

Application of Kriging method for geotechnical engineering exploration and subgrade treatment and foundation design

Specification for construction and acceptance of steel storage tank subgrade & foundation in petrochemical industry

Comparative Study on Subgrade Bearing Capacity Characteristic Value and Pile Point Bearing Capacity Characteristic Value

Dynamic Stress Measurement and Analysis of Subgrade-Culvert Transition Section on Qinhuangdao-Shenyang Passenger Special Line

Treatment scheme of defects occurred in salty soil subgrade and its construction requirements

General Discussion into Genesis of Highway Subgrade Typical Lesion and its Treatment in Sanshui Market

Experimental Achievement of Applied Load, Confirmation of Compressive Modulus Index of Subgrade Soil by Reversed Deduction Method

Distributing Regularities of Subgrade Diseases in Permafrost Section of the Qinghai-Tibetan Highway

Constitutive Model for Rheologic Soft Soil and Its Application in Analysis of Subgrade Settlement

A Study on Characteristics of Ground Collapse and Its Formation Mechanism in Mined-out Area of Coal Mine Under Subgrade

Construction Technology for Existing Routes Subgrade Stonework Controlled Blasting

Using Drainage flow by Itself for Treatment Subgrade in Salt Lake damaged and Its construction Technology

Existing Problem in Subgrade Construction for Rural Highway and Its Countermeasure

The Experimental Researches of Comprehensive Damage-free Subgrade Quality Inspecting Technology

Design and Construction Technology of Planting Protection for Subgrade Slope of Qinhuangdao Shenyang Special Passenger Line

A Time-varying Coupling Model for Dynamic Analysis of High Speed Railway Subgrade

Theoretical Study on Treatment of Side Slope in High Filled Road Subgrade and Its Application in Engineering

Design and Construction for Subgrade Acoustic Barrier Engineering of Qinhuangdao-Shenyang Special Passenger Line

Control blasting technology applied to the subgrade construction

Strengthening of existing railway subgrade and its prevention measures of defects

Construction technique of subgrade composed of mineral waste and its inspection method

Spatial probabilistic characteristics of consolidation for clayey subgrade

Simplified Analysis Foe Interactions Between Subgrade and Foundation and Superstructure of Space Mega Frame of Super Tall Buildings

Research on frost heave susceptibility and classification of coarse grained soil of highway subgrade in seasonally frozen ground region

Manufacture and application of vehicle for checking the state of railway subgrade

Application and Study of Shock Compacting in Subgrade Reinforcing

Study of indoor model test of spread foundation on the reinforced aeolian sand subgrade

Measurement and comparison of coefficient of soil reaction, modulus of deformation and modulus of dynamic deformation for subgrade

The Mechanical Responds of Pavement Structure on the Inconsistent Deformation of Subgrade for Widening and Rebuilding Highway

Test Study for High Embankment of Transition Zone Between Subgrade and Abutment on Qinhuangdao -Shenyang Railway of Passenger Special Line

Draw up a plan for Special Subgrade on Cut - Fill Section Under Complicated Topographic Condition

General Analysis for Genesis of Ordinary Subgrade Disaster and Its Prevention Measure

Experimental study on compacting for soft subgrade in different height of a stack of soil

Prediction of Subgrade Settlement and Horizontal Displacement Through Finite Element Analysis

Calculation of the horizontal coefficient of subgrade reaction with the flat dilatometer test

Subgrade compaction parameters of foreign countries and engineering significance

Significance of Numerical Simulation Research on the Thermal Regime of the Subgrade in Permafrost Regions

Construction techniques in subgrade widening of expressway reconstruction

Analysis of Grillage Girder by Spring Supporting On Elastic Subgrade and its Applications

Technique of Subgrade Erosion Protection for Highway Along the Concave Bank of River in Mountain Area

Study of criteria on subsidence control in short section of subgrade between two bridges(tunnels)

The influence study of underground water to subgrade bearing capacity

Settling characteristic of composite foundation strengthened subgrade under train load

Study of reinforced highway subgrade with grouting cement mortar

Non-linear finite element analysis and study of subgrade with reinforced earth

Experimental Research on Distribution of the Temperature Field in Permafrost Soil Subgrade

Loading and deformation characteristics of highway widened subgrade with retaining wall in mountainous region

Design and Construction of Swelling Soil Subgrade of Nanyang-Dengzhou Expressway( Provincial Section )in Henan Province

Experiment on Ground Temperature Field and Deformation of Bridge-subgrade Transition Section in Permafrost Regions

Some Questions to be Noted for Construction Design of Subgrade and Pavement on Soft Base

Grouting Strengthening Technique for Subgrade Settlement of Mountainous Highway

Simple Analysis of Subgrade protection and Consolidation for Highway in a Special District

Study on test method of construction quality and its standard value for improved expensive soil subgrade

The Grading Synthetical Evaluation of the Expanding and Contracting of Subgrade Expansive Soil

Construction Strategy of Improving Bituminous Concrete Pavements Smoothness in Soft Soil Subgrade

Design specification for steel storage tanks subgrade and foundation in petrochemical enterprises

Application and Analysis of Reinforcement and Grouting Combined Treating the Soft Foundation in Widening Subgrade

Analysis on the DDC Method and Calculation of Subsidence at the Deep Thick and Wet Subgrade in Zhengzhou-Xi'an Passenger Dedicated Line

Common settlement method for expansive soil subgrade and its appraisement

Superficial Analyze the Location Centre Line of Railway in Mountain Areas Relation to Subgrade Engineering

A Comprehensive Study on Railway Subgrade at Soft Soil Slope Area over Plateau and its Construction

Dynamic Model Experimental Study on Effects of Mechanical Properties of Railway Subgrade Beds on Ballast Beds under Cyclic Loading

Defects in railway subgrade induced by exploiting-gold-related cavern and its treating plan

Technology of Thermal Insulation Infiltration Ditch for Treating Ground Water in Subgrade Construction in Frozen Area

Preliminary Investigation of Soft Subgrade Reinforcement by Dynamic Compaction

Design and Construction of Planting Protection for Subgrade Slope of Qinhuangdao-Shenyang Special Passenger Line

Application of Vertical Settlement Gauging for Subgrade Settlement Monitoring in Supper- Highway

Additional stress in pavement structure due to asymmetrical settlement of soft subgrade

Dynamic Model of the Vertical Vehicle-Subgrade Coupled System Under Secondary Suspension

Theoretical Analysis of the Plastics Drain Board Method Handling Soft-soil Subgrade in Northeast Cold Area

Strengthening saturated soft soil subgrade by dynamic compaction substitution method

Deformation Characteristics and Influential Factors of Subgrade in Permafrost Region

Influences of Insulating Berm on Ground Temperature Characteristics of Permafrost Subgrade

Evaluation technique for subgrade of Qinhuangdao-Shenyang passenger dedicated railway line

Treatment for Groundwater Corrosivity on Subgrade Engineering in Chongqing-Huaihua Railway

Mechanism Analysis and Treatment Study for Mud Pumping of Subgrade in a Certain Railway

Trial Study on How to Deal with the End of A Bridge Transition Subgrade by Geo -cellular Railings

Preliminary Approach to Application of Flexibility Crib Dam Foundation in Subgrade Protection Project

Construction Techniques and Experiences for Subgrade in Reconstruction and Extension Projects on Xiu- Shui Line

The reinforcement technology of transition section between subgrade and bridge culvert in existing railway line

Sensitivity Analysis of Design Parameters and Classification on Subgrade Strength Grades in West County Highway

Analysis for additional stress in pavement due to thawing settlement of permafrost subgrade

Study of Influence Factors on Normal Frost-Heave Force of Subgrade's Fine-Grained Soil

The Appliance Study of Earth-Probing Radar in Subgrade Quality's Inspection

Analysis of in Site Experiment of Reinforced Earth Retaining Walls for the Embankment and Subgrade Shoulders

Strengthening and construction monitoring of subgrade at intersection between expressway and the Yellow river levee

Grey relational comprehensive judgement about the grade of swelling-shrinkage for the expansive soil in highway subgrade

Application of impact compaction techniques in Zhengzhou southwest circle city freeway subgrade