Analysis The Reason Of The Highway Harmful Freeze And Deal With The Method Researches Of Jilin Province

Our country is the third frozen soil in the world,the area of season freezingexceeded half of the national area. Accompany with the soil in the water of freezeand melt, took place a series of frozen soil phenomenon, because of frozen soilexistence roadbed freeze harm performance to freeze swell, meltdown to sink andturn over to the mire.Due to freeze injury to the roadbed, that road surface swell up, made roadsurface open to break and the road of the spring turns over the syrup, These freezeinjury can't make its highway develop convenient and fast function, resulted in safesuffered from formal route, So study the highway road surface, the basic principleof freeze injury roadbed, investigate the regulation of the development, It is veryimportant that guide anti-freeze of the highway design, construction, defend andcontrol.The function of roadbed and road surface that accept car carry, directlyinfluence road goes through. The stable basic condition is the strength andstabilities of the roadbed, It is an important problem that seasonal influence to theroadbed in deep freeze highway constructed in my province, It is also influencemore and more about the freeze injury to the road life and the maintenanceexpenses.This passage observed and analysis several highway freeze injure inprovince which we have got on the scene obtain the foundational data, On theresearch of the area of season freezing surface and roadbed which freeze injure tocarry with contents as followed;1. Study and develop frozen soil at present which at home and abroadcurrently, Influence of the cement road and the roadbed, Putting forward to do theoverview, state the research purpose, meaning and need the problem for resolved.2. Investigate frozen soil of season and the surface of the disease to harmthrough an area cement concrete road, Analysis and assess the land to carried onthe usage circumstance that the existing cement concrete road surface, As a result,the existence use of cement concrete road surface condition to be in much medium,good appearance.3. Classification of frozen soil of season and the surface of the disease areacement concrete road of the land. Going on this foundation, Analyze the outputmechanism of the harm of the cement concrete road surface.4. Through analysis that harms from the design, construction, protect aspect,etc. put forward the area cement concrete road seasonal frozen soil which preventand cure.。5. Go through analysis the frozen soil of season and the area cement concreteroad surface, Elaborate the reason of the freeze swell creation and affect the factor..6. Freeze swell can be divided into original position and divided solidify. Thewater of the hole congelated and the physical volume of itself enlarge 0.09%, makea granule of soil move, the body of soil created freeze swell, Otherwise it is viceimportant to this part of physical volumes increases, We may called originalposition freeze swell( static state freeze swell), However it should be moved in thesoil also by the outside which replenished a certain position congelation lead tophysical volume increased the quantity which enlarged the volume of water of 1.09times, Sometimes the rate of freeze expansion η to be up to 100 percent, We maycalled divided solidify. The main part of this open system to satisfied Water andsoil, compose the main part of quantity divided solidify freeze swell.7. Analysis a degree of the soil to be compose of, make sure that the originalresearch area where is easy to take place. But the strong or weak freeze swell haverelated with the dry heavy degree of the soil, nearing to the most strong 18 kN/ m3,On the contrary, exceed this boundary to be lower.8. The rate of expansion with contained the amount of water increased as it isenlarged.The thickness with high road dike produces to the roadbed, produce pressurewhich should be the biggest, existing the function of restraint load, make theamount of freeze swell decrease.9. It is not of one form that freeze swell follows deeply to the distribution,When the groundwater is buried deeply, upper part of the quantity freeze have greatcapacity, Then the groundwater is buried shallow, lower part of the quantity freezehave great capacity.10. According to index of freeze and accumulate of temperature are related tothe expression of deep freeze. I believe that it does not get the average absolutevalue to design. However the empirical formula of deep freeze should be related tosituation environment as impossible. So the empirical formula is h0= 0.036Ωd 2+135.48;h0 = 15.27( ? m +5.35);h0=5.3 ? d. Due to the limit ofobservation, the quality of data is so little. We can only use as calculate formula. Tobe aim at this section of roadbed is quite suitable.11. Under the certain congelation index of freeze, The soil contains the greatcapacity of water, the strength of freeze swell is big, but deep of freeze is little,Even if the soil contain the amount of water is so little, the strength of freeze islitter, but the deep of freeze is big.12. When the frozen soil melt, the phenomenon of sink breakage function, theice of contain change into water. It does not create bigger influence to sink downhomogenous to the use of road surface. On the contrary, It doesn't homogenous tosink down cause of the surface of the road affect greatly, transform and wouldcause the road should dint additionally. When construction is begun, sometimesmay exceed the car goes by, cause the road surface appears to break in early days,For example, to sink down of the road surface, turn over syrup and lengthwayscrack etc.