东南大学学报(自然科学版)
東南大學學報(自然科學版)
동남대학학보(자연과학판)
JOURNAL OF SOUTHEAST UNIVERSITY
2015年
3期
575-580
,共6页
机场道面%环氧沥青混凝土%配合比设计%力学响应%永久变形
機場道麵%環氧瀝青混凝土%配閤比設計%力學響應%永久變形
궤장도면%배양력청혼응토%배합비설계%역학향응%영구변형
airfield pavement%epoxy asphalt concrete%mix design%mechanical response%perma-nent deformation
为增强机场沥青道面的抗轮辙性能,提出了一种基于新型环氧沥青混凝土的高性能机场道面结构.将新型环氧沥青混凝土EAC20作为机场道面的中面层,SMA13型沥青混凝土作为上面层,AC20型沥青混凝土作为下面层,由此构成SEA机场道面结构.分析了新一代大型客机A380荷载作用下SEA机场道面结构的力学响应,针对机场道面各层沥青混凝土进行永久变形试验,并采用多元线性回归得到各层材料的蠕变参数,以模拟SEA机场道面结构的永久变形.研究结果表明,将新型环氧沥青混凝土作为中面层应用于机场道面,可以减小机场道面结构的应变,沥青面层底部最大拉应变和最大压应变分别约为传统机场沥青道面结构的68%和72%.在1×105次荷载作用下,SEA机场道面结构的永久变形仅为6 mm,约为传统SAA机场沥青道面结构的42.9%.
為增彊機場瀝青道麵的抗輪轍性能,提齣瞭一種基于新型環氧瀝青混凝土的高性能機場道麵結構.將新型環氧瀝青混凝土EAC20作為機場道麵的中麵層,SMA13型瀝青混凝土作為上麵層,AC20型瀝青混凝土作為下麵層,由此構成SEA機場道麵結構.分析瞭新一代大型客機A380荷載作用下SEA機場道麵結構的力學響應,針對機場道麵各層瀝青混凝土進行永久變形試驗,併採用多元線性迴歸得到各層材料的蠕變參數,以模擬SEA機場道麵結構的永久變形.研究結果錶明,將新型環氧瀝青混凝土作為中麵層應用于機場道麵,可以減小機場道麵結構的應變,瀝青麵層底部最大拉應變和最大壓應變分彆約為傳統機場瀝青道麵結構的68%和72%.在1×105次荷載作用下,SEA機場道麵結構的永久變形僅為6 mm,約為傳統SAA機場瀝青道麵結構的42.9%.
위증강궤장력청도면적항륜철성능,제출료일충기우신형배양력청혼응토적고성능궤장도면결구.장신형배양력청혼응토EAC20작위궤장도면적중면층,SMA13형력청혼응토작위상면층,AC20형력청혼응토작위하면층,유차구성SEA궤장도면결구.분석료신일대대형객궤A380하재작용하SEA궤장도면결구적역학향응,침대궤장도면각층력청혼응토진행영구변형시험,병채용다원선성회귀득도각층재료적연변삼수,이모의SEA궤장도면결구적영구변형.연구결과표명,장신형배양력청혼응토작위중면층응용우궤장도면,가이감소궤장도면결구적응변,력청면층저부최대랍응변화최대압응변분별약위전통궤장력청도면결구적68%화72%.재1×105차하재작용하,SEA궤장도면결구적영구변형부위6 mm,약위전통SAA궤장력청도면결구적42.9%.
To improve the anti-rutting performance of airfield pavement, a high performance airfield pavement based on a new type of epoxy asphalt concrete was proposed.With the new type of epoxy asphalt concrete EAC20 as the middle surface course, SMA13 asphalt concrete as the first surface course, and AC20 asphalt concrete as the base surface course, the SEA airfield pavement was built up.The mechanical responses of the SEA airfield pavement under the static loads of the aircraft A380 were analyzed.The permanent deformation tests of the asphalt concrete in different airfield pavement layers were carried out.The creep parameters of the asphalt concrete in each layer were obtained by using the multiple linear regression method to simulate the permanent deformation of the SEA airfield pavement.The results demonstrate that taking the new type of epoxy asphalt concrete as the middle surface course can reduce the strain of the airfield pavement.The maximum tensile strain and the maximum compressive strain on the bottom of the asphalt surface course are respectively about 68%and 72%those of the traditional airfield pavement.Under 1 ×105 loads, the permanent deformation of the SEA airfield pavement is only 6 mm, which is about 42.9%that of the traditional SAA airfield pavement.