CAJ | 학술논문

拟定质量替代百分数分别为0％,15％,25％,40％,70％的碎石型陶粒环氧沥青混合料和圆型陶粒环氧沥青混合料,进行高温抗车辙性能、水稳定性及低温弯曲性能试验.采用有限元方法分析开启桥在行车和开启2种状态下的力学响应.最后成型含钢桥面板、防水黏结层及环氧沥青混凝土的复合结构试件来验证2451型环氧沥青黏结料的界面黏结强度.研究结果表明,质量替代百分数分别为0％,15％,25％,40％,70％的陶粒环氧沥青混合料均能满足钢桥面铺装的力学性能要求.替代百分数为70％的圆型陶粒环氧沥青混合料由于其在减轻铺装质量等方面的优势被推荐为开启桥桥面铺装用的首选材料.桥面铺装层间剪应力随着开启角度的增大而增大,并在开启角度达到最大值85°时达到峰值.通过室内试验结果可知,天津响螺湾立转式开启桥在桥面铺装铺筑完成并养生3d后可进行首次开启.
의정질량체대백분수분별위0％,15％,25％,40％,70％적쇄석형도립배양력청혼합료화원형도립배양력청혼합료,진행고온항차철성능、수은정성급저온만곡성능시험.채용유한원방법분석개계교재행차화개계2충상태하적역학향응.최후성형함강교면판、방수점결층급배양력청혼응토적복합결구시건래험증2451형배양력청점결료적계면점결강도.연구결과표명,질량체대백분수분별위0％,15％,25％,40％,70％적도립배양력청혼합료균능만족강교면포장적역학성능요구.체대백분수위70％적원형도립배양력청혼합료유우기재감경포장질량등방면적우세피추천위개계교교면포장용적수선재료.교면포장층간전응력수착개계각도적증대이증대,병재개계각도체도최대치85°시체도봉치.통과실내시험결과가지,천진향라만립전식개계교재교면포장포축완성병양생3d후가진행수차개계.
The high temperature anti-rutting performance,water stability and low temperature bending property of epoxy asphalt mixture with 0％, 15％,25％,40％,and 70％granulated and circular lightweight aggregates by weight are tested,respectively.The dynamic responses under the vehicle load and in the opening process are analyzed to obtain the mechanical responses of pavements by using the finite element method.The complicated structure including a steel deck and a waterproof adhesive layer is made to verify the bond strength of the 2451-type epoxy asphalt binder.Research results show that the epoxy asphalt mixtures with lightweight aggregate replacement percentages from 0％ to 70％ all satisfy the requirements for steel bridge pavements.The epoxy asphalt mixture with a 70％ circular lightweight aggregate replacement percentage is recommended because of its smaller density when compared with other epoxy asphalt mixtures.The shear stress increases with the increase in the opening angle and achieves its maximum at the maximum opening angle of 85°.Test results show that the Tianjin Bascule Bridge can be used for first opening after a 3 d pavement conditioning.